CN109141306B - Workpiece off-line measuring device - Google Patents
Workpiece off-line measuring device Download PDFInfo
- Publication number
- CN109141306B CN109141306B CN201811043783.6A CN201811043783A CN109141306B CN 109141306 B CN109141306 B CN 109141306B CN 201811043783 A CN201811043783 A CN 201811043783A CN 109141306 B CN109141306 B CN 109141306B
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- 238000005259 measurement Methods 0.000 claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001568 sexual effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
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Abstract
The invention relates to the technical field of offline workpiece measurement, and discloses an offline workpiece measurement device. The workpiece off-line measuring device comprises: the device comprises a rack, wherein a driving cylinder, a workpiece tray positioned at a measuring position and used for setting a workpiece to be measured, and a calibration piece tray positioned at a calibration position and used for setting a calibration piece are arranged on the rack; the measuring station tray can be rotatably arranged on the rack, can be switched between the measuring position and the zero calibration position, and is connected with the driving cylinder to be lifted under the drive of the driving cylinder; the measuring station comprises a measuring sensor, and the measuring station is arranged on a measuring station tray, so that the workpiece off-line measuring device is more convenient to operate, lower in cost and higher in cost performance while the convenience and stability of measurement are improved.
Description
Technical Field
The invention relates to the technical field of offline workpiece measurement, in particular to an offline workpiece measurement device.
Background
Currently, in order to ensure the stability of an automotive transmission housing, it is necessary to measure the transmission housing to ensure the manufacturing accuracy and stability of the transmission housing.
The existing effective measurement methods are as follows:
one way is manual measurement, i.e. the operator adopts a measuring instrument to manually measure, but the manual measurement is dependent on the measurement experience of the operator, and the efficiency is too low, so that the method is not suitable for a large-scale production line, the labor cost is high, and the measurement accuracy is relatively general.
The other mode is to adopt a gantry type online automatic measuring station, and although the measuring station can improve the measuring accuracy, the price of equipment is high, the size of the equipment is huge, and the equipment is inconvenient to transport and place.
Disclosure of Invention
The invention aims to provide the workpiece offline measuring device, so that the workpiece offline measuring device is more convenient to operate, lower in cost and higher in cost performance while the convenience and the stability of measurement are improved.
In order to achieve the above object, the present invention provides a workpiece offline measuring device including: the device comprises a rack, wherein a driving cylinder, a workpiece tray positioned at a measuring position and used for setting a workpiece to be measured, and a calibration piece tray positioned at a calibration position and used for setting a calibration piece are arranged on the rack; the measuring station tray can be rotatably arranged on the rack, can be switched between the measuring position and the zero calibration position, and is connected with the driving cylinder to be lifted under the drive of the driving cylinder; a measuring station comprising a measuring sensor and being arranged on the measuring station tray.
According to the technical scheme, the workpiece tray is arranged on the rack, so that when measurement is needed, the measuring station is in a zero calibration position along with the measuring station tray, then the workpiece to be measured is placed on the workpiece tray such as in carrying or is hoisted to the workpiece tray through the hoisting mechanism, then the measuring station rotates to the measuring position along with the measuring station tray and descends to the measuring sensor to contact the measuring surface of the workpiece to be measured for measurement, the transmitted change information such as displacement change or reading change of the measuring sensor can indicate whether the measuring surface of the workpiece to be measured meets the required requirement, in addition, for the workpieces to be measured with different structures or sizes, the corresponding measuring station can be replaced or the corresponding measuring sensor of the measuring station can be replaced, and after measurement is completed, the measuring station can be moved to the zero calibration position and calibrated through the calibration piece on the calibration piece tray, so that the workpiece offline measuring device is convenient to operate and has higher cost and higher convenience and stability of measurement.
Further, the workpiece offline measuring device comprises a workpiece positioning structure arranged at the measuring position; the workpiece positioning structure is used for positioning the workpiece when the measuring station tray rotates to the measuring position.
Further, the workpiece off-line measuring device comprises a calibration piece positioning structure arranged at the calibration position; and when the measuring station tray rotates to the zero calibration position, the measuring station tray is pre-positioned by the calibration piece positioning structure.
Further, the workpiece positioning structure and the calibrator positioning structure are magnets.
Further, the measuring station includes a reference plate, on the lower surface of which a fine positioning pin is provided, and the measuring sensor is provided on the lower surface of the reference plate.
Further, a measuring bar is provided on the lower surface of the reference plate, the measuring bar being rotatable about its own axis, and the measuring sensor includes a surface contact sensor provided on the lower surface of the reference plate and a differential axis sensor provided on the outer peripheral surface of the measuring bar.
Further, the reference plate is formed with a plurality of mounting holes at different positions, and the spindle is rotatably mounted to each of the mounting holes.
In addition, the measuring rod can adjust the position along the axial direction of the measuring rod.
Further, the workpiece tray and/or the calibrator tray can be adjusted in position in a lifting and/or rotating manner on the frame.
Further, a balance crane capable of rotating along with the measuring station tray is arranged on the frame and connected with the measuring station tray.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
FIG. 1 is a schematic perspective view of a workpiece offline measuring device according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the bottom view of the measuring station of fig. 1 disposed on a measuring station tray.
Description of the reference numerals
The device comprises a 1-frame, a 2-driving cylinder, a 3-workpiece tray, a 4-calibration piece tray, a 5-measuring station tray, a 6-measuring station, a 7-reference plate, an 8-fine positioning bolt, a 9-measuring rod, a 10-surface contact sensor and a 12-balance crane.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Referring to the structures shown in fig. 1 and 2, the offline measurement device for the workpiece to be measured can be used for offline measurement of various types and structures of workpieces. As shown in the figure, the workpiece off-line measuring device comprises a frame 1, a measuring station tray 5 and a measuring station 6, wherein a driving cylinder 2, a workpiece tray 3 positioned at a measuring position and used for setting a workpiece to be measured, and a calibration piece tray 4 positioned at a calibration position and used for setting a calibration piece are arranged on the frame 1; the measuring station tray 5 is rotatably arranged on the frame 1 to be capable of switching between a measuring position and a zero calibration position, and is connected with the driving cylinder 2 to be capable of lifting under the drive of the driving cylinder 2; the measuring station 6 comprises measuring sensors and the measuring station 6 is arranged on a measuring station tray 5.
In this technical solution, since the workpiece tray 3 is disposed on the frame 1, when the measurement is required, the measuring station 6 is in a zero calibration position along with the measuring station tray 5, then the workpiece to be measured is placed on the workpiece tray 3, such as carried or hoisted by a hoisting mechanism, then the measuring station 6 is rotated to the measuring position along with the measuring station tray 5 and driven by the driving cylinder to descend to the measuring sensor to contact the measuring surface of the workpiece to be measured for measurement, and the transmitted change information of the measuring sensor, such as displacement change or reading change, can indicate whether the measuring surface of the workpiece to be measured meets the required requirement, in addition, for the workpieces to be measured with different structures or sizes, the corresponding measuring station 6 can be conveniently replaced or the corresponding measuring sensor of the measuring station 6 can be conveniently replaced, and after the measurement is completed, the measuring station 6 can be moved to the zero calibration position and calibrated by the calibration piece on the calibration piece tray 4, so that the next measurement is convenient, the offline measuring device can be operated more conveniently, less cost and higher while the convenience and stability of the measurement are improved.
Of course, when the workpiece to be measured is disposed on the workpiece tray 3, in order to improve the accuracy of measurement, the workpiece to be measured may be limited by a corresponding positioning structure, for example, the workpiece offline measuring device includes a workpiece positioning structure disposed at a measuring position, and the workpiece positioning structure may be disposed on the workpiece tray 3, or may be disposed on the frame 1, or may be disposed on both the workpiece tray 3 and the frame 1, but it should be understood that, regardless of the workpiece positioning structure, it is only required to be capable of limiting the workpiece to be measured disposed on the workpiece tray 3 and to place it for movement; meanwhile, in order to make full use of the work positioning structure, the work positioning structure is used for pre-positioning when the measuring station tray 5 rotates to the measuring position, that is, the work positioning structure can also pre-position the measuring station tray 5 in the measuring position. Like this, this work piece location structure can treat simultaneously and measure work piece and measure station tray 5 and carry out spacingly to promoted the utilization ratio of structure, avoid adopting extra limit structure to carry out spacingly to measure station tray 5, this just can promote measuring convenience and stability, makes this work piece off-line measuring device's cost simultaneously littleer, and the sexual valence relative altitude.
Further, similar to the workpiece positioning structure, the workpiece off-line measuring device comprises a calibration piece positioning structure arranged at the calibration position so as to position the calibration piece, and of course, the calibration piece can be selected according to corresponding specifications to meet the calibration requirements of different measuring stations 6, and the calibration piece is pre-positioned by the calibration piece positioning structure when the measuring station tray 5 rotates to the calibration position. Like this, this calibration piece location structure can carry out spacingly to calibration piece and measuring station tray 5 simultaneously to promoted the utilization ratio of structure, avoided adopting extra limit structure to carry out spacingly to measuring station tray 5, this just can promote measuring convenience and stability, makes the cost of this work piece off-line measuring device littleer simultaneously, the sexual valence relative altitude.
Of course, it should be understood that the workpiece positioning structure and the calibrator positioning structure may be any suitable structure, such as a clamping structure in the form of a clamping arm or clamping jaw, or, in view of the fact that the workpiece and calibrator to be measured and the tray are typically metallic, the workpiece positioning structure and the calibrator positioning structure are preferably magnets. Thus, by appropriately setting the shape and position of the magnets, it is possible to achieve, for example, limitation of the measuring station tray 5 and the workpiece to be measured at the same time.
Compared with a clamping structure, the magnet is easier to enable the workpiece off-line measuring device to be lower in cost and higher in cost performance.
Of course, in the workpiece offline measuring device of the present invention, the measuring station 6 may be selected in different configurations according to specific measuring requirements, as long as the measuring station can be disposed on the measuring station tray 5 to meet the measuring requirements. For example, as shown in fig. 2, in one configuration, the measuring station 6 includes a reference plate 7, a fine positioning pin 8 is provided on a lower surface of the reference plate 7, and a measuring sensor is provided on the lower surface of the reference plate 7. In this way, when the measuring station tray 5 rotates and drives the measuring station 6 thereon to be in a measuring position, the measuring station tray can be pre-positioned through a workpiece positioning structure such as a magnet, then the driving cylinder 2 descends, so that the fine positioning bolt 8 on the measuring station 6 can be inserted into a positioning hole of a workpiece to be measured or a positioning hole on the workpiece tray 3 for further accurate positioning, the fine positioning can provide powerful support for accurate measurement, so that the measurement is more accurate, and then the measuring sensor can act as required to measure the workpiece to be measured.
Of course, the measuring sensor provided on the reference plate 7 may be of an appropriate type selected according to the specific measuring requirements, and the invention is not limited herein. For example, in one form, as shown in fig. 2, a measuring rod 9 is provided on the lower surface of the reference plate 7, the measuring rod 9 being rotatable about its own axis, and the measuring sensor includes a surface contact sensor 10 provided on the lower surface of the reference plate 7 and a differential axis sensor provided on the outer peripheral surface of the measuring rod 9.
In this way, the reference plate 7 can be rotated within a certain angular range or moved within a certain distance, i.e. the accuracy of the surface to be measured of the workpiece to be measured can be measured by the surface contact sensor 10, while the differential axis sensor on the measuring rod 9 can measure the accuracy of the outer circumferential surface of the workpiece to be measured or the inner circumferential surface of the hole.
Of course, as shown in fig. 2, the number of the surface contact sensor 10 and the differential axis sensor may be plural, and the specific number may be selected according to actual measurement requirements.
In addition, in order for the spindle 9 to be able to measure holes or outer peripheral surfaces at different positions on a workpiece to be measured, it is preferable that the reference plate 7 is formed with a plurality of mounting holes at different positions, to each of which the spindle 9 is rotatably mounted. In this way, after the workpiece to be measured is fixedly arranged, the position of the measuring rod 9 can be correspondingly adjusted according to different positions to be measured, so that a differential axis sensor on the measuring rod 9 can be positioned in a hole to be measured, for example.
Further, for example, in order to facilitate measurement of the inner peripheral surfaces of holes of different depths, it is preferable that the measuring rod 9 can be adjusted in position along the axial direction thereof, so that the axial position of the measuring rod 9 can be adjusted accordingly according to actual measurement requirements, for example, the measuring rod 9 can be axially movably positioned on the reference plate 7, or the measuring rod 9 adopts a multi-section telescopic pipe joint to telescopically adjust the axial length.
Furthermore, in order to facilitate the placement of workpieces and/or calibration pieces to be measured of different configurations and different sizes, it is preferred that the workpiece tray 3 and/or the calibration piece tray 4 can be adjusted in position on the machine frame 1 in a lifting and/or rotating manner. In this way, interference of the rack 1 or other components of the workpiece offline measuring device with the workpiece to be measured and/or the calibration piece placement space can thereby be avoided.
Of course, the workpiece tray 3 and/or the calibrator tray 4 may be raised and/or lowered and/or rotated by any suitable structure, such as, for example, by way of a slide chute or by way of a spindle.
Finally, as shown in fig. 1, in order to improve the stability of the off-line workpiece measuring device and avoid the excessive stress of the driving cylinder 2, preferably, a balance crane 12 capable of rotating along with the measuring station tray 5 is arranged on the frame 1, and the balance crane 12 is connected to the measuring station tray 5. Thus, when lifting, the driving cylinder 2 and the balance crane 12 act on the measuring station tray 5 together to stably drive the measuring station tray 5 and the measuring station 6 to lift and lower, so as to accurately position.
The workpiece offline measuring device can be used for offline measurement of an automobile gearbox shell, for example, when in measurement, an operator places the automobile gearbox shell on a workpiece tray 3 and performs pre-positioning through a magnet, then binds and uploads the automobile gearbox shell and data through a code scanning gun so as to communicate with a factory, a measuring station tray 5 provided with a measuring station 6 rotates to a measuring position and performs pre-positioning through magnet attraction, a starting button is pressed, a driving cylinder and a balance crane act together to drive the measuring station to descend to a working position, a surface contact sensor 10 and a differential shaft sensor take values, the measurement is ended, and the measuring station ascends to a home position.
And according to the respective difference values of the surface contact sensor 10 and the differential shaft sensor, whether the automobile gearbox shell meets the precision requirement, such as whether the depth of the differential shaft meets the standard, and the like, can be obtained.
When calibration is needed after measurement is completed, the measuring station is rotated to a calibration position, attracted by the magnet, the starting button is pressed, the measuring station is lowered to a working position, the values of the surface contact sensor 10 and the differential axis sensor are calibrated, and then the measuring station is raised to the original position so as to carry out the next measurement.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (6)
1. An offline workpiece measurement device, comprising:
the device comprises a frame (1), wherein a driving cylinder (2), a workpiece tray (3) positioned at a measuring position and used for setting a workpiece to be measured and a calibration piece tray (4) positioned at a calibration position and used for setting a calibration piece are arranged on the frame (1);
the measuring station tray (5) is rotatably arranged on the frame (1) so as to be capable of switching between the measuring position and the zero calibration position, and is connected with the driving cylinder (2) so as to be capable of lifting under the drive of the driving cylinder (2);
-a measuring station (6), the measuring station (6) comprising a measuring sensor, and the measuring station (6) being arranged on the measuring station tray (5);
the off-line workpiece measuring device comprises a workpiece positioning structure arranged at a measuring position, the workpiece positioning structure is used for pre-positioning when a measuring station tray (5) rotates to the measuring position, the off-line workpiece measuring device comprises a calibration piece positioning structure arranged at a zero calibration position, the workpiece positioning structure is used for pre-positioning when the measuring station tray (5) rotates to the zero calibration position, the zero calibration position is calibrated for the measuring station by the calibration piece, the workpiece tray (3) and/or the calibration piece tray (4) can be used for adjusting the position in a lifting mode and/or a rotating mode on a frame (1), a balance crane (12) capable of rotating along with the measuring station tray (5) is arranged on the frame (1), and the balance crane (12) is connected to the measuring station tray (5).
2. The workpiece offline measurement device of claim 1, wherein the workpiece positioning structure and the calibrator positioning structure are magnets.
3. The offline workpiece measuring device according to claim 1, characterized in that said measuring station (6) comprises a reference plate (7), on the lower surface of which reference plate (7) a fine positioning pin (8) is provided, said measuring sensor being arranged on the lower surface of said reference plate (7).
4. An off-line workpiece measuring device according to claim 3, characterized in that the reference plate (7) is provided with a measuring rod (9) on its lower surface, the measuring rod (9) being rotatable about its own axis,
the measuring sensor includes a surface contact sensor (10) provided on the lower surface of the reference plate (7) and a differential axis sensor provided on the outer peripheral surface of the measuring rod (9).
5. The off-line workpiece measuring device according to claim 4, characterized in that the reference plate (7) is formed with a plurality of mounting holes at different positions, to each of which the measuring staff (9) is rotatably mounted.
6. The workpiece offline measuring device according to claim 4, characterized in that the measuring staff (9) is adjustable in position along its own axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043783.6A CN109141306B (en) | 2018-09-07 | 2018-09-07 | Workpiece off-line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811043783.6A CN109141306B (en) | 2018-09-07 | 2018-09-07 | Workpiece off-line measuring device |
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| Publication Number | Publication Date |
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| CN109141306A CN109141306A (en) | 2019-01-04 |
| CN109141306B true CN109141306B (en) | 2024-04-09 |
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| CN201811043783.6A Active CN109141306B (en) | 2018-09-07 | 2018-09-07 | Workpiece off-line measuring device |
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| Publication number | Publication date |
|---|---|
| CN109141306A (en) | 2019-01-04 |
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