JP3789047B2 - Straightening device, measuring device and measuring method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a straightening device that measures and corrects the dimensions and overall bends of relatively long steel molds and pipes. Measurement The present invention relates to a measuring apparatus and a measuring method.
[0002]
[Prior art]
In general, products such as relatively long steel molds and pipes have a complicated deformed shape due to warpage, bending, and cross-sectional deformation during the manufacturing process. Therefore, the shape is measured for products that require a precise dimensional shape, and in the case of a tolerance loss, the dimensional accuracy is secured by correction.
[0003]
As a shape measuring apparatus, for example, as described in Japanese Patent Application Laid-Open No. 5-180649, a shape measuring apparatus is known which performs a cross-sectional shape of a product separately from a bending or warping shape. Further, the shape measuring device and the correction device for correcting the shape are generally separate devices.
[0004]
[Problems to be solved by the invention]
In other words, in the conventional apparatus, the measurement of the shape of the object to be measured such as the shape steel material or the pipe material and the correction of the object to be measured whose shape has been measured are performed by separate apparatuses. In addition, there is a problem that a lot of man-hours are required for the change-over work.
[0005]
An object of the present invention is to provide a straightening device with improved workability. Measurement It is to provide a measuring apparatus and a measuring method.
[0006]
[Means for Solving the Problems]
(1) In order to achieve the above object, the present invention comprises an outer diameter dimension measuring means for measuring the outer diameter dimension of the object to be measured, a plate thickness dimension measuring means for measuring the plate thickness dimension of the object to be measured, The correction press means for correcting the bending of the object to be measured, the support mechanism part for supporting the object to be measured, the outer diameter dimension measuring means and the support mechanism part to control the outer diameter dimension of the object to be measured. Measure, measure the plate thickness dimension of the object to be measured by controlling the plate thickness dimension measuring means and the support mechanism, and determine the correction method and the correction condition based on the measured outer diameter dimension and plate thickness dimension. Control means for setting and correcting the bending of the object to be measured by controlling the correction pressing means and the support mechanism. The support mechanism section includes support means for supporting both ends or bottom of the object to be measured, indexing positioning means for determining and positioning the position of the object to be measured, and correction support for correcting the object to be measured. A correction support means that supports the object to be measured at a position and can be positioned at an arbitrary position, and changes the object to be measured by using the support means and the indexing positioning means. It is what I did. With this configuration, it is possible to automatically correct the cross section or the entire bend of the object to be measured, thereby improving workability.
[0008]
( 2 )the above( 1 ), Preferably, the support mechanism section further includes a restraining means for restraining the measured object to prevent deviation when the measured object is corrected. With such a configuration, it is possible to prevent a deviation during correction of the object to be measured.
[0009]
( 3 In the above (1), preferably, the outer diameter dimension measuring means and the plate thickness dimension measuring means are mounted on the correction press means. With this configuration, only one moving mechanism for each of the above-described means is required, so that the apparatus can be made compact.
[0010]
( 4 ) In the above (1), preferably, the straightening press means is mounted on the upper part of the base part overhanging frame, and is disposed in the lower part of the overhanging frame with respect to the straightening support mechanism part that can move the upper part of the frame. The C-type frame structure allows the straightening support mechanism to pass through, and the straightening reaction force generated by straightening between the straightening support mechanism and the straightening press mechanism is corrected during the straightening. This is converted to a compressive force in the thickness direction. With such a configuration, the straightening reaction force generated by straightening between the straightening support mechanism and the straightening press mechanism during straightening can be converted into a compressive force in the thickness direction of the base overhanging frame. The bending moment applied to the part frame can be reduced.
[0011]
( 5 In the above (1), preferably, the control means is configured to determine the object to be measured according to the outer diameter dimension and the plate thickness dimension of the object measured by the outer diameter dimension measuring means and the plate thickness dimension measuring means. The inflection point of the entire curve is detected, and correction is started from the vicinity of the inflection point where the amount of change in the curve is the largest among the plurality of inflection points. With such a configuration, even when correcting an object to be measured having a complicated bend or warp, the complicated bend can be corrected with high accuracy and efficiency.
[0012]
( 6 )the above( 5 ), Preferably, the control means performs correction while sequentially shifting the position in the longitudinal direction of the object to be measured from the point at which correction is started. With such a configuration, it is possible to efficiently correct the bending.
[0013]
( 7 ) In the above (1), preferably, the control means is based on the correction start position where the correction press means contacts the object to be measured, the pressing amount and the pressing load of the correction press from the elastic region of the object to be measured. A point that changes to a plastic region is detected, and a correction target value is determined from the detection result and the measurement result of the object to be measured, and correction is performed.
[0015]
( 8 In order to achieve the above object, the present invention provides a laser having a laser light emitting part and a light receiving part arranged across a cross section of the object to be measured, and measuring the outer diameter of the object to be measured by transmission of laser light. A measurement head and an ultrasonic measurement head that jets jet water onto the surface of the object to be measured and measures the plate thickness of the object to be measured by ultrasonic waves emitted from the object to be measured are provided. . With such a configuration, the outer diameter dimension and the plate thickness dimension of the object to be measured having complicated deformation can be measured with high accuracy.
[0016]
( 9 )the above( 8 ), Preferably, the laser measurement head and the ultrasonic measurement head are assembled to the same positioning drive mechanism.
[0017]
( 10 )the above( 8 Preferably, the apparatus further includes a jet water supply device that supplies water to the ultrasonic measurement head and receives and collects water from the surface of the object to be measured. With this configuration, water treatment can be easily performed.
[0018]
( 11 )the above( 8 Preferably, the ultrasonic measurement head includes a guide roller that is capable of following and moving in a direction perpendicular to the length direction of the measurement object when measuring the thickness of the measurement object. The guide roller is pressed against the surface of the object to be measured so as to follow the length direction of the object to be measured. With this configuration, the distance between the surface of the object to be measured having complicated deformation and the ultrasonic measurement head can be made constant, and positioning of the measurement location can be performed stably.
[0019]
( 12 In order to achieve the above object, the present invention uses an ultrasonic measurement head to inject jet water onto the surface of the object to be measured, and the thickness of the object to be measured by the ultrasonic waves emitted from the object to be measured. In the measurement method for measuring, when measuring the plate thickness of the object to be measured, the ultrasonic measurement head uses a guide roller capable of following and moving in a direction perpendicular to the length direction of the object to be measured. A guide roller is pressed against the surface of the object to be measured so that it can follow the length direction of the object to be measured.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the correction apparatus and the correction method according to an embodiment of the present invention will be described with reference to FIGS.
Initially, the whole structure of the correction apparatus by this embodiment is demonstrated using FIG.1 and FIG.2.
FIG. 1 is a front view of the correction apparatus according to the present embodiment, and FIG. 2 is a plan view of the correction apparatus according to the present embodiment. In FIG. 1 and FIG. 2, the same reference numerals indicate the same parts.
[0021]
The target product whose shape is measured and corrected by the straightening device of the present embodiment is a hollow pipe shape, and the hollow pipe is superimposed on the inner diameter side of the hollow pipe on the function of the product. Is a sliding product. Therefore, the outer diameter dimension and inner diameter dimension accuracy of each hollow pipe and the dimensional accuracy with respect to the entire warp and bend are strictly controlled. Therefore, it is necessary to measure the inner diameter of the long hollow pipe. In the following description, a hollow pipe is described as an object, but shape measurement and correction can be performed in the same manner for a solid product, a shape steel material, and the like.
[0022]
The DUT 1 shown in FIG. 1 is, for example, a long object having a total length of 4 m and a hollow pipe shape having an outer diameter of 150 mm. The end clamp devices 8a and 8b are provided at both ends of the device under test 1, and the inner diameter of the device under test 1 can be gripped by the clamp claws. The rotary indexing and positioning devices 9a and 9b index and position the end clamp devices 8a and 8b, respectively. The end clamp devices 8a and 8b and the rotation index positioning devices 9a and 9b are mounted on the moving tables 10a and 10b.
[0023]
The moving table 10a can be moved in the longitudinal direction of the object to be measured (x2 direction in the figure) on the mounting base 13 by the drive actuator 15a, and can be positioned at an arbitrary position. Further, the moving table 10b can be moved on the position adjustment table 14 in the longitudinal direction (x3 direction in the figure) on the position adjusting table 14 by the actuator 15b, and presses the right end surface of the measured object 1. The position adjustment table 14 can adjust the position in the x3 direction in the figure with respect to the lower base 17.
[0024]
In general, since there are various lengths of the DUT 1, the right end clamp mechanism is provided by the position adjustment table 14 disposed on the right side corresponding to the DUT length with the left end surface of the DUT 1 as a reference. The position of the end clamp device 8b and the rotation indexing positioning device 9b is adjusted. In other words, the position adjustment table 14 is roughly adjusted according to the length of the device under test 1, and when the clamp device 8 b is pressed against the device under test 1, the moving table 10 b is moved.
[0025]
After clamping the inner diameter of the end of the DUT 1, the rotary indexing / positioning device 9a is driven to rotate the DUT 1 to perform position indexing. At that time, the rotary indexing / positioning device 9b performs rotation indexing. It follows the positioning device 9a.
[0026]
The left support table 6a can be moved in the longitudinal direction (x2 direction in the figure) of the DUT 1 by a cylinder 11a mounted on the mounting base 13. A vertical support cylinder 7a that can move in the vertical direction (z2 direction in the drawing) is incorporated in the left support table 6a. The right support table 6b can be moved in the longitudinal direction (x3 direction in the figure) of the DUT 1 by a cylinder 11b mounted on the position adjustment table 14. A vertical support cylinder 7b that can move in the vertical direction (z3 direction in the figure) is incorporated in the right support table 6b.
[0027]
On the correction support frames 5a and 5b, shift prevention mechanisms 2a and 2b, correction support molds 3a and 3b, and vertical positioning mechanisms 4a and 4b are mounted, respectively. The misalignment prevention mechanisms 2a and 2b prevent the circumference and misalignment of the DUT 1 that occurs during correction or delivery, and are configured to sandwich the outer diameter of the DUT 1. The correction support molds 3a and 3b receive the weight of the device under test 1 and can receive the reaction force for correction when the device under test 1 is corrected. The vertical positioning mechanisms 4a and 4b support the DUT 1 and can be positioned vertically. The correction support frames 5a and 5b are respectively movable in the longitudinal direction (x4 and x5 directions in the figure) of the DUT 1. The DUT 1 can be rotated by the positioning devices 9a and 9b, but is fixed in the longitudinal direction. Accordingly, the correction support molds 3a and 3b are moved in the longitudinal direction of the DUT 1 by moving the correction support frames 5a and 5B in the longitudinal direction (X4 and X5 directions in the figure) of the DUT 1, respectively. In addition, it can be arbitrarily positioned.
[0028]
Further, on the base 17, a correction pressing means 20 that is movable in the longitudinal direction (x1 direction in the drawing) of the DUT 1 is provided. The straightening press means 20 includes a straightening head that applies a straightening force to the DUT 1, and this straightening head is driven by a straightening press cylinder 23. The straightening press cylinder 23 is attached to the horizontal frame 21 fixed to the vertical frame 24. The horizontal frame 21 can be moved on the base 17 in the longitudinal direction (x1 direction in the figure) of the DUT 1 by the motor 22. The detailed configuration of the correction press means 20 will be described in detail with reference to FIG.
[0029]
Further, an outer diameter dimension measuring means 40 for measuring the outer diameter dimension of the DUT 1 and a plate thickness dimension measuring means 50 for the DUT 1 are attached to the vertical frame 24 to which the correction press means 20 is attached. Yes. The outer diameter dimension measuring means 40 and the plate thickness dimension measuring means 50 are movable in the longitudinal direction of the object to be measured 1 (x1 direction in the figure), like the correction press means 20. The detailed configuration of the outer diameter dimension measuring means 40 and the plate thickness dimension measuring means 50 will be described later with reference to FIGS.
[0030]
The plate thickness dimension measuring means 50 in the present embodiment is for jetting jet water onto the DUT 1 and measuring the plate thickness by ultrasonic waves generated at that time. While supplying water to the measurement means 50, the water used for the measurement is recovered. The detailed configuration of the jet water supply means 60 will be described later with reference to FIG.
[0031]
Next, the configuration of the correction mechanism unit of the correction apparatus according to the present embodiment will be described with reference to FIGS. 3 and 4.
FIG. 3 is a right side view of the correction apparatus according to the present embodiment, and FIG. 4 is a left side view of the correction apparatus according to the present embodiment. 1 and 2 indicate the same parts.
[0032]
The correction mechanism that corrects the DUT 1 includes vertical frames 24a and 24b that are provided with moving guides in the lower part and a horizontal frame 21, and is a C-shaped frame as a whole. Further, rails 19a and 19b for moving in the longitudinal direction of the DUT 1 are arranged below the overhanging frames 18a and 18b arranged on the base 17, and the vertical frame is hung on the overhanging frames 18a and 18b. 24a and 24b are attached. By adopting this structure including the correction support mechanism, the correction force when correcting the DUT 1 is transmitted to the correction support molds 3a and 3b, and at the same time, the correction force from the correction press unit is also applied to the vertical frames 24a and 24b. Is transmitted to the overhanging frames 18a and 18b, and the correction force is comprehensively converted into the compression force of the overhanging frames 18a and 18b, so that a non-uniform moment is not applied to the correction press mechanism. .
[0033]
In FIG. 3, a motor 16a is for moving the correction support frame 5a shown in FIG. In FIG. 4, a motor 16b is for moving the correction support frame 5b shown in FIG. The cylinder 12b is for vertically moving the vertical positioning mechanism 4b.
[0034]
Next, the detailed configuration of the correction press unit 30 of the correction press means 20 used in the correction apparatus according to the present embodiment will be described with reference to FIG.
FIG. 5 is a cross-sectional view of a straightening press portion used in the straightening device according to the present embodiment. 1 and 2 indicate the same parts.
[0035]
The straightening press cylinder 23 is attached downward in the center of the horizontal frame 21 shown in FIG. At the tip of the straightening press cylinder 23, a straightening press portion 30 for straightening the object to be measured (the object to be straightened) is attached.
[0036]
The front end of the correction press cylinder 23 is attached to the guide block 32 via the rod block 31 of the correction press portion 30. The guide block 32 is guided by the guide frame 33 and can move the correction pressing die 34 attached to the lower end of the guide block 32 in the vertical direction and can be positioned with high accuracy. The correction die 34 has a semicircular cross-sectional shape that matches the outer diameter of the pipe-shaped object to be measured (corrected object). Further, the guide frame 33 disposed on the outer periphery of the guide block 32 receives a moment generated by correction, and can perform a further highly accurate guide.
[0037]
Further, the cylinder force is transmitted to the load cell 35 mounted inside the guide block 32 through the rod block 31 attached to the rod of the correction press cylinder 23. Further, the contact point detection load cell 36 embedded in the lower portion of the guide block 32 is transmitted with a contact force with the measured object (corrected object) by the anvil shaft 37. The anvil shaft 37 is configured such that a through hole is formed in the center of the correction pressing die 34 and a head protrudes from the through hole by an appropriate amount. Further, by mounting a spring 38 between the contact point detection load cell 36 and the anvil shaft 37, further stable detection can be performed without damaging the contact point detection load cell 36. Further, when the anvil shaft 37 is brought into contact with the device under test 1, the anvil shaft 37 is attached so as to contact the apex of the device under test 1.
[0038]
Next, the configuration of the shape measuring mechanism unit including the outer diameter dimension measuring unit 40 and the plate thickness dimension measuring unit 50 used in the correction apparatus according to the present embodiment will be described with reference to FIGS.
6 is a cross-sectional view of the shape measuring mechanism used in the correction apparatus according to the present embodiment, FIG. 7 is a front view of the outer diameter measurement means used in the correction apparatus according to the present embodiment, and FIG. It is a front view of the plate | board thickness measuring means used for the correction apparatus by embodiment. 1 and 2 indicate the same parts.
[0039]
As shown in FIG. 6, the outer diameter dimension measuring means 40 and the plate thickness dimension measuring means 50 constituting the shape measuring mechanism section are attached to the shape measuring gantry frame FR. Then, using the gantry frame FR for shape measurement, as shown in FIG. 1, it is provided on the side surface of the center part of the structure in which the vertical frames 24 a and 24 b are assembled and in the upper direction of the DUT 1. . The outer diameter measuring means 40 measures the outer diameter of the DUT 1 using light. Further, the plate thickness dimension measuring means 50 measures the plate thickness of the DUT 1 using ultrasonic waves generated from jet water.
[0040]
Next, the configuration of the outer diameter dimension measuring means 40 will be described with reference to FIGS.
The outer diameter dimension measuring means 40 includes laser light emitting portions 41a and 41b that emit laser light and laser light receiving portions 42a and 42b. The laser light emitting part 41a and the laser light receiving part 42a are paired, and the laser light emitting part 41b and the laser light receiving part 42b are paired. The laser light La emitted from the laser light emitting unit 41a is received by the laser light receiving unit 42a. Further, the laser beam Lb emitted from the laser emitting unit 41b is received by the laser receiving unit 42b.
[0041]
The laser light emitting units 41 a and 41 b and the laser light receiving units 42 a and 42 b are respectively attached to the laser positioning frame 43. The laser positioning frame 43 can be moved in the Z1 direction in the figure by a cylinder 44 and can be indexed up and down.
The laser positioning frame 43 is lowered by the cylinder 44 and moved to a position indicated by a two-dot chain line in the drawing, so that the DUT 1 emits laser beams La ′ and Lb ′ emitted from the laser emitting portions 41a ′ and 41b ′. Is blocked, the outer diameter of the DUT 1 can be measured by reducing the amount of light received by the laser receiving portions 42a ′ and 42b ′.
[0042]
It should be noted that measurement with a pair of laser sensors is also possible for an object having a small outer diameter.
Further, when it is necessary to measure the absolute position coordinates with respect to the sensor such as the bending of the DUT 1 with high accuracy, it is necessary to position the laser positioning frame 43 with high accuracy.
Further, a mechanism for indexing the device under test 1 from the side may be used.
In addition, a contact displacement meter may be used instead of the laser sensor.
[0043]
Next, the configuration of the plate thickness dimension measuring means 50 will be described with reference to FIGS.
The plate thickness dimension measuring means 50 includes an ultrasonic measuring device 52 for measuring the plate thickness attached to the lower part of a horizontal moving frame 51 movable in the Y1 direction in the drawing. From the ultrasonic measuring instrument 52, jet water JW is sprayed on the object to be measured 1, and the thickness of the object to be measured 1 is measured by detecting the ultrasonic wave generated at that time. Further, guide rollers 53 a and 53 b are attached to the horizontal movement frame 51. The opening angle of the guide rollers 53a, 53 is, for example, 120 °, and is arranged so that it can contact and press against the outer diameter of the DUT 1 from above at an optimum angle. That is, the positional relationship between the guide rollers 53a and 53b and the ultrasonic measuring device 52 is optimized, and the gap between the surface of the object to be measured 1 and the ultrasonic measuring device 52 is optimized. Note that the opening angle of the guide rollers 53 a and 53 b can be changed according to the outer diameter of the DUT 1.
[0044]
The horizontal movement frame 51 is fixedly attached to the vertical movement frame 54. The vertical movement frame 54 can be moved in the Z1 direction in the figure by the cylinder 55, and can be indexed in the vertical direction.
Since the guide rollers 53a and 53b are pressed against the device under test 1 and moved in the longitudinal direction while following the cross-sectional shape of the device under test 1, the driving pressure of the cylinder 55 is controlled in the vertical direction, and the spring or the like in the horizontal direction. It is held by an elastic body.
[0045]
The jet water supply device 60 includes a pump 62 for supplying water stored in the water supply tank 61 to the ultrasonic measuring device 52. An index base 63 is arranged on the side surface of the vertical frame 24b of the correction mechanism portion, and a water supply tank 61 with a jet water receiving container 65 attached is mounted on an index table 64 that can move on the index base 63. The water can be guided into the tank 61. That is, the jet water sprayed from the ultrasonic measuring device 52 to the DUT 1 is received by the jet water receiving container 65 and can be naturally guided into the tank 61 using the height difference.
[0046]
As described above, the outer diameter dimension measuring means 40 constituting the shape measuring mechanism unit is used to measure the outer diameter dimension of the object 1 to be measured, and further the plate thickness dimension measuring means 50 is used to measure the object to be measured. By measuring the plate thickness dimension of 1, the inner diameter dimension of the DUT 1 can be measured based on the difference between the outer diameter dimension and the plate thickness dimension.
[0047]
Next, the correction method using the correction apparatus according to the present embodiment will be described with reference to FIGS.
First, the system configuration of the correction apparatus according to the present embodiment will be described with reference to FIG. In addition, the same code | symbol as FIGS. 1-8 has shown the same part.
[0048]
The control means 100 controls the outer diameter dimension measuring means 40 and the plate thickness dimension measuring means 50 to measure the outer diameter dimension and the plate thickness dimension. The control means 100 receives the outer diameter dimension of the object measured by the outer diameter dimension measuring means 40 and the plate thickness dimension of the object measured by the plate thickness dimension measuring means 50.
[0049]
Further, the control means 100 controls the correction press unit 20 to correct the bending of the measured object (corrected object). At that time, the support mechanism unit 00 is controlled to load / unload the object to be measured, clamp it, or the like. Here, as the support mechanism portion 00, the end clamp devices 8a and 8b, the rotary indexing and positioning devices 9a and 9b, the actuators 15a and 15b, the cylinders 11a and 11b shown in FIGS. Mechanisms 2a and 2b, vertical positioning mechanisms 4a and 4b, and the like are included.
[0050]
Next, the operation of the correction apparatus according to the present embodiment will be described with reference to FIGS. 10 and 11 to 15.
FIG. 10 is a flowchart showing the operation of the correction apparatus according to the embodiment of the present invention.
[0051]
In step 110 of FIG. 10, the control means 100 internally checks the automatic driving start state.
Next, in step 112, the control means 100 determines whether the left upper / lower support cylinder 7a and the right upper / lower support cylinder 7b or the left upper / lower positioning mechanism 4a and the right upper / lower positioning mechanism 4b, which are product support mechanisms in the support mechanism 00. Either one is raised, and a product that is an object to be measured (an object to be corrected) is loaded onto the correction device.
[0052]
Next, in step 116, the control means 100 grips and clamps the end of the product using the end clamping devices 8a and 8b in the support mechanism unit 00.
Next, in step 118, the control means 100 lowers the vertical positioning mechanisms 4a and 4b in the support mechanism unit 00, and the product clamping is completed.
[0053]
Here, the shape dimension measurement situation according to the present embodiment will be described with reference to FIG.
FIG. 11 is a front view showing a measurement state of the shape dimension in the correction apparatus according to the embodiment of the present invention. The same reference numerals as those in FIG. 1 indicate the same parts.
When the product clamping is completed, as shown in the drawing, both ends of the DUT 1 are gripped from the inside by the left end clamping device 8a and the right end clamping device 8b. The vertical positioning mechanisms 4a and 4b are in a lowered state as shown in the figure.
[0054]
Next, the measurement process starts from step 120 onward in FIG.
In step 120, the control means 100 automatically checks the automatic measurement start state.
[0055]
Next, after step 122, the outer diameter of the product is measured.
Therefore, in step 122, the control means 100 drives the motor 22 (FIG. 1) in the support mechanism unit 00 to position the outer diameter dimension measuring means 40 on the left side in the product longitudinal direction. The initial outer diameter measurement position positioned at this time is a position P1 shown in FIG. Here, assuming that the position of the left end of the device under test 1 that is a product is P0, the position P1 is a position moved about 15 cm to the right from the position P0. P2 is a position further 15 cm away from the position P1. Then, at this position P1, the control means 100 controls the cylinder 44 (FIG. 7) of the outer diameter dimension measuring means 40, so that the laser measuring head composed of the light emitting parts 41a and 41b and the light receiving parts 42a and 42b is shown in FIG. As shown by a two-dot chain line in FIG.
[0056]
Next, in step 124, the control means 100 measures the outer diameter of the DUT 1 and the distance from the laser dimension measuring device reference using the outer diameter dimension measuring means 40 as shown in FIG. After this measurement is completed, the control unit 100 drives the motor 22 (FIG. 1) in the support mechanism unit 00 to position the outer diameter dimension measuring unit 40 at the right position P2 in the product longitudinal direction. Then, after the positioning is completed, the control means 100 again measures the distance from the outer diameter of the DUT 1 and the laser dimension measuring device reference using the outer diameter dimension measuring means 40. In this way, the control means 100 measures the outer diameter dimension at each position in the longitudinal direction of the DUT 1 while moving the outer diameter dimension measuring means 40 by a predetermined distance (for example, 15 cm).
[0057]
Next, at step 126, as shown in FIG. 11, the control means 100 controls the rotation index positioning devices 9a and 9b in the support mechanism unit 00 to perform the rotation index of the DUT 1. In the present embodiment, the DUT 1 is rotated 90 ° from the initial position.
[0058]
Thereafter, returning to step 124, the outer diameter measurement means 40 is used to measure the outer diameter of the DUT 1 and the distance from the laser dimension measuring device reference for each position in the longitudinal direction of the DUT 1. To do.
Further, in step 126, the DUT 1 is further rotated by 90 °, and then the outer diameter is measured in step 124. In addition, the DUT 1 is further rotated by 90 ° in step 126. Thereafter, in step 124, the measurement of the outer diameter is repeated. As a result, at the four rotational index positions of the object to be measured 1 at angles of 0 °, 90 °, 180 °, and 270 °, the object to be measured 1 outside the object 1 at each predetermined position in the longitudinal direction of the object 1 to be measured. Measure the distance from the diameter and laser dimension measuring device reference.
[0059]
Next, in step 128, the control means 100 controls the cylinder 44 (FIG. 7) of the outer diameter dimension measuring means 40 to raise the laser measuring head composed of the light emitting parts 41a and 41b and the light receiving parts 42a and 42b.
In step 130, the control unit 100 drives the motor 22 (FIG. 1) in the support mechanism unit 00 to return to the measurement start position, and ends the outer diameter measurement.
[0060]
After measuring the outer diameter of the product, the thickness of the product is measured from step 132 onward.
In step 132, the control means 100 drives the motor 22 (FIG. 1) in the support mechanism section 00 to position the plate thickness dimension measuring means 50 at the position P1 on the left side in the product longitudinal direction. To do. Then, at this position P1, the control means 100 controls the cylinder 55 (FIG. 8) of the plate thickness measurement means 50 so that the ultrasonic plate thickness measuring head comprising the ultrasonic measuring device 52 and the guide rollers 53a and 53b. As shown in FIG. 8, it is lowered to a position close to the DUT 1.
[0061]
Next, in step 134, the control means 100 measures the thickness of the DUT 1 using the thickness measurement means 50 as shown in FIG. After this measurement is completed, the control unit 100 drives the motor 22 (FIG. 1) in the support mechanism unit 00 to position the plate thickness dimension measuring unit 50 at the right position P2 in the product longitudinal direction, and again. The plate thickness of the DUT 1 is measured using the plate thickness dimension measuring means 50. In this way, the control means 100 moves the plate thickness dimension measuring means 50 by a predetermined distance (for example, 15 cm), and at the same position as the measurement position of the outer diameter in the longitudinal direction of the object 1 to be measured. Measure the thickness dimension at the position.
[0062]
Next, in step 136, the control means 100 controls the rotation index positioning devices 9a and 9b in the support mechanism unit 00, as shown in FIG. In the present embodiment, the DUT 1 is rotated 90 ° from the initial position.
[0063]
Thereafter, the process returns to step 134, and the thickness of the DUT 1 is measured at each position in the longitudinal direction of the DUT 1 using the plate thickness measuring means 50.
Further, in step 136, the DUT 1 is further rotated by 90 °, and thereafter, in step 124, the plate thickness is measured. In step 126, the DUT 1 is further rotated by 90 °. Thereafter, in step 124, the measurement of the plate thickness is repeated. Thus, the plate of the DUT 1 at each predetermined position in the longitudinal direction of the DUT 1 at four rotation index positions of the DUT 1 at angles of 0 °, 90 °, 180 °, and 270 °. Measure the thickness.
[0064]
Next, in step 138, the control unit 100 controls the cylinder 55 (FIG. 8) of the plate thickness measuring unit 50 to raise the ultrasonic plate thickness measuring head.
In step 140, the control means 100 drives the motor 22 (FIG. 1) in the support mechanism unit 00, returns it to the measurement start position, and ends the plate thickness measurement.
[0065]
In the above-described example, the measurement of the outer diameter dimension and the measurement of the plate thickness dimension of the object to be measured are performed individually, but these can also be performed simultaneously. That is, as shown in FIG. 6, the laser outer diameter dimension measuring head and the ultrasonic plate thickness dimension measuring head are assembled to the shape measuring gantry frame FR. Then, by setting the distance between the laser outer diameter dimension measuring head and the ultrasonic plate thickness dimension measuring head to, for example, 30 cm, the outer diameter dimension is measured at the position P3 shown in FIG. Sheet thickness measurement can be performed simultaneously.
[0066]
During the laser outer diameter measurement and the ultrasonic plate thickness measurement, the upper and lower support cylinders 7a and 7b and the upper and lower positioning mechanisms 4a and 4b, which are correction support mechanisms, are separated below the object 1 to be measured. Position, that is, escaped downward from the object to be measured 1, and when the shape is being measured or when gripping both ends, the lower part of the object to be measured is arbitrarily moved and positioned Can do.
[0067]
Next, in step 150 of FIG. 10, since it is necessary for the control means 100 to measure the inner diameter dimension of the product, the inner diameter dimension is calculated by a calculation process of the measured plate thickness dimension and outer diameter dimension. Then, after completion of the dimension measurement, it is checked whether there is no problem with the measurement data. For example, when a pipe having an outer diameter of 150 mm is measured and abnormal data such as an outer diameter dimension of 300 mm is obtained, there is a problem in measurement.
In step 150, if there is a problem with the measurement data, the control unit 100 returns to step 130, performs the measurement process again, and remeasures. If the measurement result clears the preset tolerance, the product is unloaded after step 160 and the process ends. Furthermore, if the measurement result is out of tolerance, the process proceeds to the correction process after step 152.
[0068]
Here, the unloading process after step 160 will be described.
In step 160, the control means 100 selects either the left vertical support cylinder 7a and the right vertical support cylinder 7b, or the left vertical positioning mechanism 4a and the right vertical positioning mechanism 4b, which are product support mechanisms in the support mechanism 00. Raise and support the product being measured (corrected).
Next, in step 162, the control means 100 ends the unloading of the product by releasing the unclamping of the product end by the end clamping devices 8a and 8b in the support mechanism unit 00. .
[0069]
Next, when correction is required, in step 152, the control means 100 sets a correction method.
In step 154, the control means 100 sets correction conditions.
[0070]
Here, the correction method and the method of setting the correction condition in the present embodiment will be described with reference to FIGS.
FIG. 12 and FIG. 13 are explanatory diagrams of the correction method and correction condition setting in the correction apparatus according to the embodiment of the present invention.
FIG. 12 shows an example of the occurrence of bending and inflection points of a complex shaped product.
As shown in FIG. 12, the inflection point 1, the inflection point 2, the inflection point 3, and the inflection point 4 are calculated from the measurement result of the shape of the DUT 1 having a complicated bend. For the end, distances L1, L2, L3, and L4 between the end and the inflection point, and the distance between the inflection points between the end and the inflection point are calculated. In the illustrated example, L3>L4>L2> L1. In such a case, as the correction method in step 152 in the present embodiment, a method consisting of correction procedures for correcting in descending order of distance is assumed.
[0071]
Next, FIG. 13 shows an example of correction conditions and correction methods between inflection points of complex shaped products.
The correction conditions in step 154 include a correction position, a correction support position, and a push amount. Accordingly, as the correction support position when correcting the inflection point 3 shown in FIG. 11, the left correction support molds 3a and 3b are positioned and supported at the inflection point 2 and the inflection point 4, respectively. Further, as the correction position, the correction pressing die 27 is positioned at the inflection point 3 and correction is performed. The pushing amount is determined according to the distance L3.
Moreover, there exists a correction pattern as an operation method. In other words, after the inflection point 3 is pushed by the straightening pusher 27 and the correction is made, the pusher 27 is shifted in the longitudinal direction to the pusher 27 'and the pusher 27 ". By shifting, the bending moment distribution with respect to the longitudinal direction of the DUT 1 can be changed, and straight correction is possible.
[0072]
Next, the correction process is performed after step 170 in FIG.
In step 170, the control means 100 automatically checks the automatic correction process start state.
Next, in step 172, the control means 100 drives the rotary indexing positioning devices 9a and 9b in the support mechanism unit 00 based on the correction method and the correction conditions obtained in steps 152 and 154, and FIG. As shown in FIG. 13, the correction object (measurement object) 1 is rotated so that the inflection point 3 that is the first correction position faces directly above, and the correction angle is determined.
Next, at step 174, as shown in FIG. 13, the control means 100 drives the motors 16a and 16b in the support mechanism unit 00 to move the correction support frames 5a and 5b, thereby correcting the correction support mold 3a. , 3b are respectively positioned at predetermined correction support positions. Further, the motor 22 in the support mechanism unit 00 is driven to move the correction pressing means 20 and position the correction pressing die 34 at a predetermined correction position.
[0073]
Next, in step 176, the control means 100 controls the left vertical support cylinder 7a and the right vertical support cylinder 7b, or the vertical vertical positioning mechanism 4a and the vertical vertical positioning mechanism 4b, which are product support mechanisms in the support mechanism 00. Raise either to support the product that is the object to be corrected.
Next, in step 178, the control means 100 releases the product end by the end clamping devices 8a and 8b in the support mechanism portion 00 and unclamps them.
[0074]
Next, in step 180, the control means 100 lowers the vertical positioning mechanisms 4a and 4b in the support mechanism unit 00.
Next, in step 182, the control unit 100 drives the displacement prevention mechanisms 2 a and 2 b in the support mechanism unit 00 to sandwich the article 1 to be corrected from both sides to restrain the rotational displacement.
Next, in step 190, a correction process is executed.
[0075]
FIG. 14 shows the arrangement state of the apparatus when the correction process is executed by the processing of step 170 to step 190. In addition, the same code | symbol as FIGS. 1-11 has shown the same part.
When switching from the shape dimension measurement process to the correction process, first, a correction method, correction conditions, and the like are automatically set from the shape dimension measurement results, and each mechanism is positioned. Next, both ends of the DUT 1 are unclamped, the left support table 6a and the right support table 6b are moved forward, and then the left vertical support cylinder 7a and the right vertical support cylinder 7b are lifted, and both clamp devices 8a, 8b is released and handed over. Further, delivery using the left and right vertical positioning mechanisms 4a and the right vertical positioning mechanism 4b is possible. According to each delivery method, the measurement object 1 is mounted on the left correction support mold 3a and the right correction support mold 3b, and then correction is performed. When the correction is made, the measured object 1 is corrected to turn upward so that the measured object 1 is rotated in the rotation direction. Therefore, the measured object 1 is squeezed by the left displacement prevention mechanism 2a and the right displacement prevention mechanism 2b. It is a mechanism that clamps and clamps.
[0076]
Here, the details of the correction process in step 190 will be described with reference to FIG.
FIG. 15 is a flowchart showing the process of the correction process using the correction apparatus according to the present embodiment.
[0077]
First, in step 191, the control means 100 operates the straightening press cylinder 23 in the straightening press means 20 to lower the straightening die 34.
Next, in step 192, the control means 100 uses the contact point detection load cell 36 (FIG. 5) of the correction press unit 30 to contact the surface of the article 1 to be corrected from the detected pressure or a certain setting. The position with the applied pressing force is detected. In the example shown in FIG. 13, this point or position is detected as a height H <b> 1 to the inflection point 3, which is a correction position with respect to a straight line connecting the correction support molds 3 a and 3 b that support the inflection point 2 and the inflection point 4.
[0078]
Next, in step 193, the control means 100 detects the indentation amount and the correction force with high accuracy in real time using the contact point detection load cell 36 when pushing in the region within the range of the correction amount set in advance. The yield point of the article to be corrected 1 is detected. The yield point varies depending on the mechanical properties of the article to be corrected 1 and the correction conditions. Further, in a so-called elastic region that returns to the original state when the correction pressing force is released, the pushing amount and the correction force have a proportional relationship. When further pressing is performed, a plastic region is reached where deformation starts, and the proportional relationship is lost when the relationship between the pressing amount and the correction force is observed. The point at which the proportional relationship breaks is regarded as the deformation start point, that is, the yield point, and the correction amount is determined based on that point.
[0079]
Next, in step 194, the control means 100 corrects the target correction amount.
Next, in step 195, after ensuring the target correction amount, the control means 100 returns the correction press to the first correction start point.
Next, in step 196, the control means 100 brings the correction press into contact with the article 1 again and detects the deformation amount actually corrected.
[0080]
In step 197, the control means 100 determines whether the target correction has been performed. If there is no problem, the correction process is terminated, and the process proceeds to Step 200 in FIG.
If there is a problem, in step 198, the control means 100 reviews the correction condition, and in step 199, sets the target correction condition again and repeatedly executes it. In addition, as demonstrated in FIG.12 and FIG.13, correction is performed for every some inflection point.
[0081]
Next, in step 200 of FIG. 10, the control means 100 checks the correction status and determines whether correction has been performed as intended. If the overall judgment of the quality of the correction is OK, the process proceeds to the measurement process after step 120, the measurement is performed again, and when the tolerance is cleared in step 150, the process proceeds to step 160, and the object to be corrected is unloaded. In the case of NG, the process proceeds to the correction process again after step 210.
[0082]
In step 210 and subsequent steps, a product change process is executed.
In step 210, the control means 100 internally checks the product transfer start state.
Next, at step 212, the control means 100 determines the left and right vertical support cylinders 7a and 7b, or the left and right vertical positioning mechanisms 4a and 4b, which are product support mechanisms in the support mechanism 00. Raise one.
[0083]
Next, in step 214, the control means 100 uses the end clamp devices 8a and 8b in the support mechanism unit 00 to grip and clamp the end of the product.
Next, in step 216, the control means 100 lowers the vertical positioning mechanisms 4a and 4b in the support mechanism unit 00, and the product clamping is completed.
[0084]
Next, in step 218, the control means 100 measures the outer diameter of the object to be measured in the same manner as the processing in steps 120 to 130. Here, only the outer diameter of the object to be measured is measured, and the thickness measurement is not performed.
Next, in step 220, the control means 100 sets correction conditions as in the processing in step 154. Then, after returning to step 170, the correction process is executed again.
[0085]
It is to be noted that the correction condition data for correcting the object to be measured and the variation data resulting from the correction are sequentially stored in the correction data storage area to provide a learning function, so that complex cross-sectional deformation and bending can be achieved. It becomes possible to correct the deformation efficiently and automatically.
[0086]
As described above, according to the present embodiment, after the object to be measured is mounted on the correction device according to the present embodiment, the measurement and correction are automatically performed by the shape measurement process, the correction process, and the change process between the processes. Therefore, it is not necessary to prepare and change the object to be measured, and the number of man-hours can be reduced. Also. Even in the case of a relatively long and heavy object, it can be automated by the correction device according to the present embodiment, so that the work efficiency can be improved.
[0087]
In addition, objects to be measured such as mold steel materials and pipe materials often have complicated bending deformation in the cross-sectional shape and the longitudinal direction of the object to be measured due to manufacturing or during processing. Even in such a case, the outer diameter, inner diameter, plate thickness dimension, and bending dimensions of the object to be measured that have complex bends and warps and whose cross-sectional shape is deformed should be automatically and accurately measured. Can do. Further, based on this measurement result, it has a function of setting a correction method such as a correction procedure and a correction pattern and a function of setting correction conditions, so that automatic correction is possible.
[0088]
Further, the outer diameter of the object to be measured is measured using a laser beam by a laser measuring head in which a laser emitting part and a receiving part are arranged across the cross section of the object to be measured, and the object to be measured is measured by an ultrasonic measuring head. Since the thickness of the plate is measured by flowing jet water over the surface, it is possible to measure the outer diameter and inner diameter of the object to be measured at the same time. If this is the case, no setup change is required.
[0089]
The laser measurement head and the ultrasonic measurement head are each assembled to the same positioning drive mechanism (the frames 21 and 24 driven by the motor 22 while being attached via the shape measurement mount frame FR). In addition, since it is possible to perform indexing and positioning with respect to the object to be measured as necessary, it is possible to measure the outer diameter dimension and the plate thickness dimension of the object to be measured having complicated deformation with high accuracy. In addition, the measuring device can be made compact.
[0090]
Further, the ultrasonic measurement head includes guide rollers 53a and 53b and can follow and move in a direction perpendicular to the length direction of the object to be measured, so that a certain distance from the surface of the object to be measured can be secured. Positioning is easy and the plate thickness measurement accuracy can be improved. In addition, by controlling the pressing force when the guide roller is pressed against the surface of the object to be measured, a mechanism capable of following the length direction of the object to be measured is used, so that the surface of the object to be measured and the ultrasonic waves having complicated deformation can be obtained. The distance to the measurement sensor can be made constant, and the measurement location can be positioned stably.
[0091]
Furthermore, the jet water supply device 60 has a water supply function for flowing jet water for ultrasonic measurement to the surface of the object to be measured, and a function for receiving and recovering jet water flowing from the surface of the object to be measured. It is possible to measure the outer diameter size and the plate thickness size of an object having complicated deformation with high accuracy. Moreover, water treatment can be performed easily.
[0092]
The corrective support mechanism that is mounted on the upper part of the base overhanging frame and that can move the upper part of the frame is arranged in the lower part of the overhanging frame so that the correction support mechanism can pass through the C-type frame structure. The straightening reaction force generated by straightening between the straightening support mechanism and the straightening press mechanism at the time of straightening is converted into a compressive force in the thickness direction of the base overhanging frame, and straightened to the straightening press mechanism. The bending moment added by the reaction force can be reduced. Further, the bending moment can be equalized, and deformation of the correction mechanism portion frame can be suppressed as much as possible.
[0093]
In addition, when correcting an object to be measured with complex bends or warps, the inflection point of the entire bend of the object to be measured is calculated from the shape measurement results, and the optimal procedure and combination are selected from the multiple inflection points. After that, the inflection point is supported, and the correction is started from the maximum or near the bending amount of the supported inflection point, and the correction position is sequentially set in the longitudinal direction of the measured object as necessary. After correcting the bending between the inflection points while correcting by shifting, the transition to the next inflection point is sequentially performed to correct the bending, thereby making it possible to correct the complicated bending with high accuracy and efficiency.
[0094]
Furthermore, when correcting the cross-section of the object to be measured or the entire bend based on the result of calculation processing from the measurement result of the outer diameter dimension or the plate thickness dimension of the object to be measured, the correction start position where the correction press contacts the object to be measured is determined. Detects and continuously detects the indentation amount and indentation load of the straightening press, and automatically calculates the point (plastic deformation start point) at which the elastic region of the object to be measured changes from the elastic region to the plastic region. Therefore, it becomes easy to detect the plastic deformation start point. Furthermore, the correction target value is determined from the calculation result and the measurement result of the object to be measured, and correction is performed. In the correction, the actual deformation amount is detected, and correction is performed while constantly comparing the correction target value. Thus, correction work can be performed automatically and efficiently.
[0095]
In addition, from the cross-sectional dimension and the bending dimension calculated from the measurement result of the shape dimension of the object to be measured and the preset allowable dimensions, the correction procedure, correction position and correction amount in the case of complex correction several times, Moreover, the correction work can be efficiently performed by calculating correction conditions such as a correction support position corresponding to the bent shape and a position where correction is performed by a correction press.
[0096]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the workability | operativity of the correction apparatus containing a measuring apparatus can be improved.
[Brief description of the drawings]
FIG. 1 is a front view of a correction apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view of a correction device according to an embodiment of the present invention.
FIG. 3 is a right side view of a correction device according to an embodiment of the present invention.
FIG. 4 is a left side view of a correction device according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view of a straightening press portion used in a straightening device according to an embodiment of the present invention.
FIG. 6 is a cross-sectional view of a shape measuring mechanism used in a correction device according to an embodiment of the present invention.
FIG. 7 is a front view of an outer diameter measuring unit used in the correction apparatus according to the embodiment of the present invention.
FIG. 8 is a front view of plate thickness measuring means used in the correction apparatus according to the embodiment of the present invention.
FIG. 9 is a block diagram showing a system configuration of a correction apparatus according to an embodiment of the present invention.
FIG. 10 is a flowchart showing an operation of the correction apparatus according to the embodiment of the present invention.
FIG. 11 is a front view showing a measurement state of a shape dimension in the correction apparatus according to the embodiment of the present invention.
FIG. 12 is an explanatory diagram of a correction method and correction condition setting in the correction apparatus according to the embodiment of the present invention.
FIG. 13 is an explanatory diagram of a correction method and correction condition setting in the correction apparatus according to the embodiment of the present invention.
FIG. 14 is an explanatory diagram of an arrangement state of devices during execution of a correction process using a correction device according to an embodiment of the present invention.
FIG. 15 is a flowchart showing processing of a correction process using the correction device according to the present embodiment.
[Explanation of symbols]
1 ... Object to be measured
2a, 2b ... Misalignment prevention mechanism
3a, 3b ... Straightening support type
4a, 4b ... Vertical positioning mechanism
5a, 5b ... Correction support frame
6a, 6b ... support table
7a, 7b ... Vertical support cylinder
8a, 8b ... End clamping device
9a, 9b ... Rotary indexing positioning device
10a, 10a ... moving table
11a, 11b, 12a, 12b ... cylinder
13 ... Mounting base
14 ... Position adjustment table
15a, 15b ... Drive actuator
16a, 16b ... motor
17 ... Base
18a, 18b ... Base projecting frame
19a, 19b ... Rail
20 ... Correction press means
21, 24 ... Frame
22 ... Motor
23 ... Straightening press cylinder
27 ... Straightening push type
30 ... Straightening press
31 ... Rod block
32 ... Guide block
33 ... Guide frame
34 ... Straightening press
35 ... Load cell
36 ... Contact point detection load cell
37 ... Anvil shaft
38 ... Spring
40 ... Outer diameter measuring means
41 ... Laser emission part
42a, 42b ... laser light receiving section
43 ... Frame for laser positioning
44 ... Cylinder
50. Plate thickness measurement means
51. Horizontal movement frame
52. Ultrasonic measuring instrument
53a, 53b ... guide rollers
54. Vertical movement frame
55 ... Cylinder
60 ... Jet water supply device
61 ... Water supply tank
62 ... Pump
65. Jet water receiving container
FR: Mounting frame for shape measurement

Claims (12)

An outer diameter measuring means for measuring the outer diameter of the object to be measured;
A thickness measuring means for measuring the thickness of the object to be measured;
Correction press means for correcting the bending of the measured object,
A support mechanism for supporting the object to be measured;
The outer diameter measuring means and the support mechanism are controlled to measure the outer dimensions of the object to be measured, and the plate thickness measuring means and the support mechanism are controlled to determine the thickness of the object to be measured. Control means for measuring, setting a correction method and correction conditions based on the measured outer diameter dimensions and plate thickness dimensions, and controlling the correction press means and the support mechanism to correct the bending of the object to be measured. for example Bei the door,
The support mechanism is
Supporting means for supporting both ends or bottom of the object to be measured;
Indexing positioning means for determining and positioning the position of the object to be measured;
When correcting the object to be measured, the apparatus includes a correction support means that supports the object to be measured at a correction support position and can be positioned at an arbitrary position.
A correction apparatus, wherein the object to be measured is changed using the support means and the index positioning means . The correction apparatus according to claim 1 ,
The correction device further includes a restraining unit that restrains the object to be measured and prevents displacement when the object to be measured is corrected. The correction apparatus according to claim 1,
The straightening device, wherein the outer diameter dimension measuring means and the plate thickness dimension measuring means are mounted on the straightening press means. The correction apparatus according to claim 1,
The correction pressing means is mounted on the upper part of the base part extension frame, and is arranged at the lower part of the extension frame with respect to the correction support mechanism part movable on the upper part of the frame. The structure is such that the part can pass through, and during correction, the correction reaction force generated by correcting between the correction support mechanism part and the correction press mechanism part is converted into the compression force in the plate thickness direction of the base part overhanging frame. A correction device characterized by that. The correction apparatus according to claim 1,
The control means detects an inflection point of the entire bending of the measured object based on the outer diameter dimension and the thickness dimension of the measured object measured by the outer diameter dimension measuring means and the plate thickness dimension measuring means. An orthodontic apparatus which starts correction from the vicinity of the inflection point where the amount of change in bending is the largest among a plurality of inflection points. The correction apparatus according to claim 5 , wherein
The said control means correct | amends, shifting the position to the longitudinal direction of a to-be-measured object sequentially from the point which started correction | amendment. The correction apparatus according to claim 1,
The control means detects the points at which the correction press means changes from the elastic region of the object to be measured to the plastic region based on the correction start position where the object to be measured contacts the object to be measured, and the amount and force of pressing of the correction press. A correction device, wherein correction is performed by determining a correction target value from the detection result and the measurement result of the object to be measured.   A laser measuring head having a laser emitting portion and a light receiving portion arranged across a cross section of the object to be measured, and measuring the outer diameter of the object to be measured by transmission of laser light; And an ultrasonic measurement head for measuring the plate thickness of the object to be measured by ultrasonic waves emitted from the object to be measured. The measuring apparatus according to claim 8 , wherein
The laser measuring head and the ultrasonic measuring head are assembled in the same positioning drive mechanism. The measuring apparatus according to claim 8 , wherein
And a jet water supply device for supplying water to the ultrasonic measurement head and receiving and collecting water from the surface of the object to be measured. The measuring apparatus according to claim 8 , wherein
The ultrasonic measurement head includes a guide roller that is capable of following and moving in a direction perpendicular to the length direction of the object to be measured when measuring the plate thickness of the object to be measured. A measuring apparatus characterized by being able to follow the length direction of the object to be measured by pressing a roller.   In the measuring method in which jet water is sprayed on the surface of the object to be measured using the ultrasonic measuring head and the thickness of the object to be measured is measured by the ultrasonic wave emitted from the object to be measured, the ultrasonic measuring head includes: When measuring the plate thickness of the object to be measured, by using a guide roller capable of following and moving in a direction perpendicular to the length direction of the object to be measured, by pressing the guide roller against the surface of the object to be measured, A measuring method characterized by being able to follow the length direction of the object to be measured.

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