JP6740396B2 - Three-dimensional measuring machine - Google Patents

Description

The present invention relates to an apparatus for measuring the size of an object, and more particularly to a three-dimensional measuring machine for measuring by manually touching a probe with a measuring point by a measurer.

Conventionally, a contact-type three-dimensional measuring machine has been used for measuring dimensions of industrial products and parts of industrial products. A three-dimensional measuring machine detects the three-dimensional coordinate values at the point of contact by contacting terminals called probes to various locations on the measurement target, and calculates various dimensions of the measurement target from the coordinates. It is a device that does.

Such a three-dimensional measuring machine is disclosed in Patent Document 1, for example. A three-dimensional measuring machine disclosed in Patent Document 1 has a gate-shaped movable frame that is slidably supported on both sides of a measurement table in the X direction, and a slidable support on the movable frame that is perpendicular to the X direction. A head that is slidable in the Y direction, and an elevating shaft that is supported so as to be vertically movable relative to the head in the up-down direction, that is, the Z direction. It can be moved and positioned.

Further, in this three-dimensional measuring machine, the tip of the probe is formed into a highly accurate spherical shape with a hard and wear-resistant material such as artificial ruby or ceramics. The machine touches the finished surface of the work such as the engine block placed on the measuring table with the tip of the probe and measures the displacement of the probe from the reference position to check whether the work is finished to the specified dimensions. I'm supposed to inspect it.

JP-A-2002-195820

However, the conventional three-dimensional measuring machine as disclosed in Patent Document 1 has a problem that the measured values vary greatly depending on the skill of the measurer. According to the inventors' earnest research, the causes of the variation in the measured values are the displacement of the position where the probe is applied as a measurement point, the velocity and acceleration of the probe when the probe is brought into contact with the measurement point, and the probe applied to the measurement point. Therefore, it was found that there is a deviation of the direction (vector toward the measurement point) from the normal direction of the measurement point when brought close to each other.

In view of such circumstances, the present invention aims to provide a three-dimensional measuring machine in which variations in measured values due to the skill of the measurer are less likely to occur.

The problems of the present invention can be solved by the following inventions. That is, the three-dimensional measuring machine of the present invention is a three-dimensional measuring machine that manually measures a probe by bringing it into contact with a measuring point of a workpiece, and the operation of the probe is set for each measuring point. Based on the erroneous operation condition for judging whether or not it is out of the predetermined measurement condition for each point, the main feature is to provide a warning means for issuing a warning in the case of an erroneous operation that is an operation out of the predetermined measurement condition. I am trying.
Accordingly, in the case of an erroneous operation, a warning is issued, and the measurer can perform the remeasurement so that the warning is not issued, so that variations in measured values are unlikely to occur.

The three-dimensional measuring machine of the present invention is mainly characterized in that the erroneous operation is at least one of the following contents (1) to (4).
(1) Measuring at a position deviated from the measurement point by a predetermined value or more.
(2) The moving speed of the probe is equal to or higher than a predetermined speed.
(3) The acceleration of movement of the probe is not less than a predetermined acceleration.
(4) The probe is moved and contacted with the measurement point at an angle more than a predetermined angle from a predetermined direction to perform measurement.

As a result, when a cause of measurement variation occurs, a warning is issued, so that the measurer can perform remeasurement and prevent variation in measured values. At this time, the above (2) may be that the moving speed of the probe is equal to or higher than a predetermined speed in a space within a predetermined distance from the measurement point. Further, the above (3) may be that the acceleration of movement of the probe is equal to or higher than a predetermined acceleration in a space within a predetermined distance from the measurement point.

Further, the three-dimensional measuring machine of the present invention is mainly characterized in that the warning means issues a warning by one or more of sound, light, vibration, and display on a monitor screen.
This makes it easy for the measurer to recognize the warning by the warning means.

Further, in the three-dimensional measuring machine of the present invention, the warning means at least issues a warning with a sound, and the greater the degree of deviation from the measurement conditions, the more the frequency of the sound, the loudness, and the sound generation interval. The main feature is that any one or more of the above changes.
As a result, the measurer can easily and surely recognize the warning, and can surely recognize the deviation from the measurement condition, so that the erroneous operation can be corrected to an accurate operation. Will be easier.

Further, in the three-dimensional measuring machine of the present invention, the warning means issues a warning with at least light, and the greater the degree of deviation from the measurement condition, the more one of the color, intensity, and blinking interval of the light. The main feature is that the above changes.
As a result, the measurer can easily and surely recognize the warning, and can surely recognize the deviation from the measurement condition, so that the erroneous operation can be corrected to an accurate operation. Will be easier.

Furthermore, in the three-dimensional measuring machine of the present invention, the warning means issues a warning at least by vibration, and the greater the degree of deviation from the measurement condition, the more the frequency of the vibration, the intensity, and the interval at which the vibration occurs. The main feature is that any one or more of the above changes.
As a result, the measurer can easily and surely recognize the warning and can surely recognize the degree of deviation from the measurement condition, so that the erroneous operation can be corrected to an accurate operation. Will be easier.

Further, the three-dimensional measuring machine of the present invention is characterized mainly in that the warning means has a meter indicating the degree of deviation from the measurement condition.
As a result, the measurer can easily and surely recognize the warning, and can surely recognize the deviation from the measurement condition, so that the erroneous operation can be corrected to an accurate operation. Will be easier.

The three-dimensional measuring machine of the present invention can reduce the measurement variation by the measurer.

It is a block diagram of one embodiment of a three-dimensional measuring machine of the present invention. It is a perspective view of a gate moving type three-dimensional measuring machine. It is a perspective view showing a measuring means of an articulated type three-dimensional measuring machine. It is the figure which showed the list of an example of a part program. It is a flow chart which shows operation of erroneous operation judging means. It is a flow chart which shows operation of erroneous operation judging means. It is a perspective view showing an example using an LED lamp as a warning means. It is a perspective view showing an example using an LED lamp array as a warning means. It is a perspective view showing an example using an analog meter as a warning means. It is a perspective view showing an example using a display as a warning means. It is explanatory drawing explaining the contact angle at the time of making a probe contact a to-be-measured object, and performing a measurement. It is a perspective view showing an example using a sound generating device as a warning means. It is a perspective view showing an example using a vibration generator as a warning means. It is a perspective view showing the state where the vibration generator was attached to the arm of the measurement operator. It is a perspective view showing a state where a vibration generator is installed in a chair.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. Here, in the drawings, the parts indicated by the same symbols are the same elements having the same functions. In addition, in the present invention, when the range of values is represented by "-", the values at both boundaries are included in the range.

<Structure>
In the three-dimensional measuring machine of the present invention, the probe operation at the time of manually bringing the probe into contact with the measurement point of the measurement object (hereinafter, simply referred to as a work) is performed according to the measurement condition set for each measurement point. It is provided with a warning means for issuing a warning in the case of an erroneous operation that is a missed operation. An embodiment of such a configuration will be described below.

An embodiment of the coordinate measuring machine of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a block diagram of an embodiment of the coordinate measuring machine of the present invention. FIG. 2 is a perspective view of a gate moving type three-dimensional measuring machine. As shown in FIG. 1, the three-dimensional measuring machine of the present invention includes a measuring unit 10, a calculating unit 11, a displaying unit 12, an erroneous operation determining unit 13, a measuring condition storing unit 14, and a warning unit 15. Mainly prepared for.

With reference to FIG. 2, the measuring means 10 includes a probe 20 for contacting a measurement point of a workpiece, a three-dimensional moving means 21 for moving the probe in the X-axis direction, the Y-axis direction, and the Z-axis direction. A table 22 on which a work is placed is included.

Here, in FIG. 2, the measuring means 10 has been described as a configuration of a three-dimensional measuring machine of a portal moving type, but the present invention is not limited to this, and as shown in FIG. It may be of the type. FIG. 3 is a perspective view showing the measuring means of the articulated three-dimensional measuring machine.

In the multi-joint measuring means 10, the probe 20 is connected to the tips of a plurality of arms 34a, 34b, 34c, 34d connected in series by a plurality of joints 32a, 32b, 32c, 32d, 32e. The plurality of joints 32a, 32b, 32c, 32d, 32e are configured to be rotatable, and thus the plurality of arms 34a, 34b, 34c, 34d are configured to be swingable.

That is, the measuring means 10 may be of a portal-moving type, an articulated type, or any other type as long as it can move the probe 20 three-dimensionally. Here, the gate moving type measuring means will be described as an example.

Returning to FIG. 1 and FIG. 2, the three-dimensional moving means 21 includes an X-axis slider 23 that allows the probe 20 to move in the X-axis direction (left-right direction in the drawing) and a probe 20 in the Y-axis direction (front side in the drawing). It can be configured by a Y-axis slider 24 that is movable in the back direction and a Z-axis slider 25 that is capable of moving the probe 20 in the Z-axis direction (vertical direction in the drawing).

The Y-axis slider can slide on the side of the table 22, the X-axis slider 23 can slide on a plate-shaped member that constitutes the Y-axis slider 24, and the Z-axis slider 25 can slide on the X-axis. It is possible to slide inside the member that constitutes the shaft slider 23. As the X-axis slider 23, the Y-axis slider 24, and the Z-axis slider 25, for example, an air slider can be used.

The table 22 can be composed of a pedestal 26 and a surface plate 27. It is preferable that the gantry 26 supports the surface plate 27 with an air cylinder and controls the surface plate 27 so that the surface plate 27 is always horizontal.

Further, the measuring means 10 can include the following means.
・Coordinate position detecting means for detecting the three-dimensional coordinate position of the tip of the probe ・Probe speed detecting means for detecting the moving speed of the probe ・Probe acceleration detecting means for detecting the moving acceleration of the probe ・Measurement described in the part program Positional deviation calculation means for calculating the amount of positional deviation between the measurement point and the actually measured point-When moving the probe to the measurement point, the angle detection means (the measurement point of the moving direction vector of the probe just before contacting the measurement point Means to detect the angle to the normal passing through)

Each of the above means may be mounted on the measuring means 10 as dedicated hardware, for example, an acceleration sensor in the case of the probe acceleration detecting means or a speed sensor in the case of the probe speed detecting means, or realized by software. May be done.

That is, since the three-dimensional measuring machine can accurately detect the three-dimensional position coordinate of the probe 20, the change in the position coordinate of the probe 20 causes the moving speed, the moving acceleration, the displacement amount of the probe, and the angle toward the measurement point. May be calculated by software.

In this case, such software is stored in a storage device in the computer 28, and the software is executed by the computer 28 so that the moving speed, moving acceleration, position The shift amount and the angle toward the measurement point may be obtained.

The calculation means 11 calculates a desired dimension from the position where the probe 20 detected by the coordinate position detection means and the measurement point are in contact, that is, the three-dimensional position coordinates of a plurality of locations where the probe 20 is in contact as the measurement point. For example, by obtaining the length between two points from two coordinates, obtaining the center or radius of a circle passing through three points from three coordinates, or obtaining the inclination of a plane, the desired dimensions of parts or products can be obtained. Calculate the measured value of.

As the calculation means 11, for example, a computer 28 can be used. In FIG. 2, the computer 28 is depicted as a separate body from the measuring means 10, but it may be a separate body as described above, or the measuring means 10 and the computer 28 may be integrally configured.

The measurement value calculated by the calculation means 11 is displayed by the display means 12. As the display means 12, a general computer display device such as a display 29a or a printer 29b as shown in FIG. 2 can be used. That is, the measurement value calculated by the calculating means 11 is displayed by being output to the display 29a or the printer 29b.

The erroneous operation determination means 13 determines whether or not the act of measurement using the probe 20 deviates from a predetermined condition. When the erroneous operation determination means 13 determines that the predetermined condition (hereinafter, referred to as erroneous operation condition) is not satisfied, the warning means 15 issues a warning. As the erroneous operation condition, the following contents (1) to (4) can be set. Here, in the present invention, the measurement point means a place to be measured, and when a part program is used, it means a place to be measured described in the part program.

(1) Measuring at a position deviated from the measurement point by a predetermined value (referred to as a predetermined deviation distance) or more.
(2) The moving speed of the probe is equal to or higher than a predetermined speed (referred to as a predetermined speed) in a space within a predetermined distance (referred to as a predetermined speed distance) from the measurement point.
(3) In a space within a predetermined distance (referred to as a predetermined acceleration distance) from the measurement point, the acceleration of movement of the probe is equal to or greater than a predetermined acceleration (referred to as a predetermined acceleration).
(4) The probe makes a moving contact with the measurement point at an angle more than a predetermined angle (called a predetermined contact angle) from a normal direction (or a specified direction: the specified direction is called a probing vector). To measure.

In the erroneous operation determination means 13, at least one or more of the above (1) to (4) may be set as the erroneous operation condition, but by setting all of them, it is more effective in the measurement variation by the operator. Can be reduced to

These erroneous operation conditions may be stored in the computer 28, may be stored in the erroneous operation determination means 13, or may be stored in other parts, but are stored in the part program. Is most preferred. The part program is a program in which the measurement location of the workpiece, the measurement order, etc. are described. The operator causes the three-dimensional measuring instrument to execute this part program and displays the measurement points displayed by the three-dimensional measuring instrument according to the part program. Measure in order.

Since the part program exists for each work, it is possible to set the optimum erroneous operation condition for each work by incorporating the erroneous operation condition in the part program. This part program will be described with reference to FIG. FIG. 4 is a diagram showing an example of a list of part programs.

As shown in FIG. 4, the measurement point is described in the part program at coordinates indicated by X, Y, and Z (respectively indicating X coordinate, Y coordinate, and Z coordinate). Further, the probing vector, which is the moving direction when the probe 20 contacts the measurement point, is indicated by I, J, K [indicates probing vector (I, J, K)].

Further, L, M, N, and O respectively describe a predetermined displacement distance, a predetermined speed, a predetermined acceleration, and a predetermined contact angle, but it is not necessary to describe all of them, and a warning is issued as an erroneous operation. Only the items you want to write are listed. Here, the predetermined displacement distance may be used as the predetermined speed distance and the predetermined acceleration distance, or may be separately described as P and Q (not shown).

The erroneous operation determination means 13 can be configured by, for example, a computer. The computer reads the part program to display the next measurement location on the display unit 12, monitors the movement of the probe 20, and detects the coordinate position detection unit, the probe speed detection unit, the probe acceleration detection unit, the position deviation calculation unit, and the angle. Based on the data from the detection means, the warning means 15 issues a warning when the operation is out of the predetermined range.

These can be realized by executing a program that causes a computer to operate as the erroneous operation determination means 13. An example of the operation of the three-dimensional measuring machine having such an erroneous operation determination means 13 will be described with reference to the flowcharts shown in FIGS. 5 and 6 are flowcharts showing an operation example of the coordinate measuring machine.

As shown in FIG. 5, the measurement operator manually moves the probe to the measurement point (S1). The erroneous operation determining means 13 determines whether or not the moving speed of the probe sent from the probe speed detecting means is equal to or higher than the predetermined speed described in the part program (S2). When it is determined that the speed is equal to or higher than the predetermined speed, the erroneous operation determination means 13 issues a warning to the measurement operator by the warning means 15 (S3).

After the warning means 15 gives a warning, the erroneous operation determination means 13 determines whether or not the measurement operator has selected the measurement stop or the measurement completion (S5), and when the measurement stop or the measurement completion is selected. Ends the measurement (S6), and if not, returns to S1 to execute.

When the erroneous operation determination means 13 determines in S2 that the speed is not equal to or higher than the predetermined speed, the erroneous operation determination means 13 determines whether the movement acceleration of the probe sent from the probe speed detection means is equal to or higher than the predetermined acceleration described in the part program. It is determined whether or not (S4). When it is determined that the acceleration is equal to or higher than the predetermined acceleration, the process is performed from S3, and when it is not determined that the acceleration is equal to or higher than the predetermined acceleration, the process is performed from S5.

Next, description will be made with reference to FIG. As shown in FIG. 6, in the measurement work, the probe is manually moved to the measurement point (S10). The erroneous operation determination means 13 determines whether or not the position coordinates of the probe sent from the coordinate position detection means are apart from the position coordinates described in the part program by a predetermined shift distance or more (S20). If it is determined that the measurement operator is separated by the predetermined shift distance or more, the erroneous operation determination unit 13 issues a warning to the measurement operator by the warning unit 15 (S30).

After the warning means 15 issues a warning, the erroneous operation determination means 13 determines whether or not the measurement operator has selected the measurement stop or the measurement completion (S50), and when the measurement stop or the measurement completion is selected. Ends the measurement (S100), and otherwise executes S60. In S60, the erroneous operation determination means 13 determines whether or not the measurement operator has selected redo of the measurement (probing). When the redo of the measurement is selected, the measurement operator measures the same place. (S80), and the process is executed from S20. In this case, in the next measurement, the erroneous operation determination means 13 executes the same step as the previous time in executing the part program, and uses the same data as the data used in the previous measurement as the data used for the erroneous operation determination.

If the erroneous operation determination means 13 determines that the measurement operator has not selected the measurement re-execution, the measured data is confirmed (S70), and the measurement operator returns to S10 and selects the next measurement location. Measure manually. In S20, if the erroneous operation determining means 13 determines that the position coordinates of the probe sent from the coordinate position detecting means are not more than the predetermined displacement distance from the position coordinates described in the part program, the erroneous operation determining means 13 determines the angle. It is determined whether or not the movement angle of the probe, which is sent from the detection means, toward the measurement point is an angle away from the probing vector by a predetermined contact angle or more (S40).

If it is determined in S40 that the contact angle is greater than or equal to the predetermined contact angle, the process is performed from S30, and if not, the process is performed from S90. In S90, the measured coordinate data is confirmed, and the process is executed from S50.

5 and 6, the operation example of the three-dimensional measuring machine of the present invention is shown, but the operation is not limited to this, and the operations of FIGS. 5 and 6 may be arbitrarily combined and operated. You may operate based on the flowchart of FIG.

Returning to FIG. 1, the measurement condition storage means 14 will be described. The measurement condition storage means stores a condition for the erroneous operation determination means 13 to determine whether or not the operation is erroneous. This condition may be stored anywhere as long as it can be read by the erroneous operation determination means 13, but it is preferable that the condition is described and stored in the part program as described above.

Therefore, the part program may be stored anywhere as long as it is stored, for example, in a storage device (memory, hard disk, SSD, etc.) in the computer 28 shown in FIG. It may be stored in an external storage device (hard disk, SSD, flash memory, CDROM, DVDROM, BD [Blu-ray disc], etc.) connected to the device 28.
Therefore, as the measurement condition storage means 14, the storage device usable in the computer 28 described above can be used.

Next, the warning means 15 (FIG. 1) will be described. As the warning means 15, any means can be used as long as it can give a warning to the measurement operator. Although various warning methods can be considered, one or more of the warning methods using light, monitor screen, sound, vibration, etc. can be adopted.

<Warning means using LED lamp>
These various ways in which the warning means 15 can be configured will be described below with reference to the drawings. FIG. 7 is a perspective view showing an example in which an LED lamp is used as the warning means 15. As shown in FIG. 7, an LED lamp 72, which is the warning means 15, is installed on the arm 70. The installation location is preferably a location where the measurement operator can easily visually recognize even if the arm 70 is grabbed by hand.

The probe 20 is attached to one end of the arm 70, and the opposite end is connected to the Z-axis slider 25. By moving the arm 70, the measurement operator guides the probe 20 to the measurement point and brings it into contact with the measurement point.

An LED lamp 72 is installed on the arm 70 as a warning means 15. As a result, when the measurement operator performs an erroneous operation while holding and moving the arm 70 by hand, the LED lamp 72 lights up or blinks to warn. Therefore, the measurement operator can easily know the mistake of his/her operation.

At this time, the degree of departure from normal operation, that is, the degree of erroneous operation can be indicated by the blinking speed, color change, light intensity, and the like. For example, when the arm 70 is being moved, the LED lamp 72 may start blinking when the moving speed of the arm 70 exceeds a predetermined speed, and the blinking may be faster as the moving speed is faster than the predetermined speed.

Here, as is apparent from FIG. 7, since the probe 20 is attached to the arm 70, the moving speed of the arm 70 and the moving speed of the probe 20 are the same. Therefore, in the above description, the moving speed of the arm 70 and the moving speed of the probe 20 are considered to be the same, and the expression “moving speed of the arm 70” and “moving speed of the probe 20” are considered to be equivalent. The same can be said for the movement acceleration of the arm 70 and the movement acceleration of the probe 20, and thus the expression “movement acceleration of the arm 70” and “movement acceleration of the probe 20” are considered to be equivalent.

Alternatively, when the moving speed of the arm 70 exceeds a predetermined speed, the emission color of the LED lamp 72 changes from green to yellow, and the color may be closer to red as it moves faster than the predetermined speed. Further, the LED lamp 72 may be turned on when the moving speed of the arm 70 exceeds a predetermined speed, and the light amount of the LED lamp 72 may be increased as the arm 70 is moved faster than the predetermined speed.

Here, the warning may be given when the probe 20 is moved faster than a predetermined speed described in the part program, or when the probe 20 enters within a predetermined speed distance described in the part program, Also, it may be performed when moving faster than a predetermined speed. This is because the moving speed and the moving acceleration outside the predetermined speed distance or outside the predetermined acceleration distance are unlikely to cause measurement variations. However, by issuing a warning about the moving speed and the moving acceleration outside the predetermined speed distance or the predetermined acceleration distance, the measuring operator may move the moving speed and the moving acceleration before the probe 20 enters the predetermined speed distance or the predetermined acceleration distance. Will be easier to adjust.

The above methods may be performed simultaneously in any combination. For example, the LED lamp 72 may blink when the speed exceeds a predetermined speed, and the blinking may be faster and the amount of light may be larger as the LED lamp 72 moves faster than the predetermined speed. Alternatively, if the light emission color of the LED lamp 72 changes from green to yellow when the speed exceeds a predetermined speed, and the light emission color of the LED lamp 72 becomes closer to red as the speed of the LED lamp 72 is moved faster than the predetermined speed, the light amount may increase. good.

Furthermore, when all of them are combined and the moving speed of the arm 70 exceeds a predetermined speed, the emission color of the LED lamp 72 changes from green to yellow and blinks. The faster the moving speed, the faster the blinking speed and light emission. The color may be closer to red and the light intensity may be further increased. Of course, if the moving speed of the arm 70 exceeds a predetermined speed, the LED lamp 72 may be turned on or blinked, or the color or the amount of light may be changed, so that the measurement operator is erroneous. May be warned.

Further, in FIG. 7, the LED lamp 72 is installed on the arm 70, but the installation position is not limited to the arm 70, and the surface plate 27 (FIG. It may be installed in 2) or in another place. Preferably, it is better to install it on the arm 70 or in the vicinity of the object to be measured (on the surface plate or the like), which is a place where the measurement operator can easily see it.

Further, in the above description, the movement speed of the arm is described as an example of the erroneous operation, but the movement acceleration of the arm, the amount of positional deviation from the measurement point at the measurement location, and the amount of deviation from the predetermined contact angle during measurement are also the same as above. It can be configured to issue a warning as well.

At that time, LED to warn about the movement speed of the arm, the movement acceleration of the arm, the amount of displacement from the measurement point at the measurement location, and the amount of deviation from the predetermined contact angle at the time of measurement, which are the check contents as erroneous operation The lamps 72 may be individually provided, or one LED lamp 72 may be configured to give a warning about all the check contents as the above-mentioned erroneous operation. In this case, when an operation that is determined to be an erroneous operation is performed, a warning may be issued regardless of the check contents.
Although the LED lamp has been described above, the device is not limited to the LED lamp, and any device that emits light, such as a light bulb or an organic EL, can be used.

<Warning means using LED lamp array>
Next, an example using an LED lamp array as the warning means 15 will be described with reference to FIG. FIG. 8 is a perspective view showing an example in which an LED lamp array is used as the warning means 15. Since this is provided with the LED lamp array 80 instead of the LED lamp 72, the description of the contents applicable to the LED lamp array will be omitted.

As shown in FIG. 8, the LED lamp array 80 is installed on the arm 70. The installation location is preferably a location where the measurement operator can easily visually recognize even if the arm 70 is grabbed by hand. The LED lamp array 80 is formed by arranging a plurality of LED lamps in an array, and by changing the number of LEDs to be emitted among the LEDs that are continuously arranged, the length of the light emitting portion is changed to serve as a bar meter. Can be operated.

By using this, the degree of erroneous operation can be indicated by the length of the light emitting portion. For example, when the measurement operator moves the arm 70 to bring the probe 20 close to the measurement point of the measurement target and makes contact with the measurement target, a predetermined displacement distance (amount of displacement from the measurement point at the measurement location) is obtained. Accordingly, the larger the predetermined displacement distance is, the longer the length of the light emitting portion of the LED lamp array 80 can be.

As a result, the degree of erroneous operation, in this case, the positional deviation amount (predetermined deviation distance) between the measurement point and the actual measurement location can be recognized by the length of the LED lamp array 80, so that the measurement operator can The degree of erroneous operation can be intuitively known. At this time, by marking the LED lamp array 80 with a scale and indicating the range not erroneous and the range of erroneous operation, the measuring operator can more clearly know the degree of erroneous operation.

Further, the LED lamp array 80 may be used like a meter, and a normal range may be green, and a yellow color may appear when an erroneous operation is performed, and a red color may be approximated when the degree of the erroneous operation becomes severe. At this time, as for the color change, the color of the entire light emitting portion of the LED lamp array 80 may change, or the color may change from the middle of the meter.
Further, as described above in <Warning Means Using LED Lamp>, blinking speed, color change, light intensity, etc. may be used together to indicate the degree of erroneous operation. Further, the LED lamp array 80 may be capable of performing peak hold. Peak hold is when the LED lamp array 80 is used like a meter, leaving the LED at the maximum indicated by the LED lamp array 80 to remain illuminated.

As a result, when the moving speed of the probe 20 is indicated on the LED lamp array 80, the maximum peak is left displayed when the value changes every moment, so that the measurement operator can easily recognize the maximum value. Become.
In the above description, the LED lamp array has been described, but the present invention is not limited to the LED lamp array as long as it is an array-shaped light emitting device, and any organic EL, light bulb array, fluorescent display tube, plasma display tube, or the like can be used. You can In addition, a dot matrix type display device using an LED or the like can also be used. In this case, simple characters, sentences and symbols can be displayed. It can indicate the degree.

<Warning means using analog meter>
Next, an example using an analog meter as the warning means will be described with reference to FIG. FIG. 9 is a perspective view showing an example in which an analog meter is used as the warning means 15. Since this is the one provided with the analog meter 90 instead of the LED lamp 72 and the LED lamp array 80, the explanation about the application to the analog meter will be omitted.

As shown in FIG. 9, the analog meter 90 is installed on the arm 70. The installation location is preferably a location where the measurement operator can easily visually recognize even if the arm 70 is grabbed by hand. The analog meter 90 gives a warning to the measurement operator by moving the needle on the scale. It is also possible to indicate the degree of erroneous operation by the position of the needle. Here, the installation place of the analog meter 90 is not limited to the arm 70, and may be installed anywhere as long as it is easily visible to the measurement operator.

As an erroneous operation warning, a case where the movement of the probe 20 exceeds a predetermined acceleration will be described as an example. When the measurement operator holds the arm 70 and moves the probe 20 to the measurement point of the measurement object, the needle of the analog meter 90 swings according to the acceleration of the movement of the probe 20. A scale is marked on the analog meter 90, and the range of the predetermined acceleration is clearly indicated on the scale.

Accordingly, when the moving acceleration of the probe 20 exceeds the range of the predetermined acceleration, the measurement operator shakes the needle of the analog meter 90 beyond the range of the predetermined acceleration marked on the scale, so that the operator can clearly know his/her erroneous operation. You can give feedback to your actions.

At this time, in the analog meter 90, the needle may be shaken for the first time after the probe 20 is inserted at the predetermined acceleration distance, or the needle may be shaken before the predetermined acceleration distance is reached. For example, the needle shakes before entering the predetermined acceleration distance, but by operating the peak hold mechanism after entering the predetermined acceleration distance, the acceleration can be clearly expressed only when the measurement value is affected as an erroneous operation. Therefore, it becomes easy for the measurement operator to determine whether or not re-measurement should be performed.

At this time, it is preferable that the needle of the analog meter 90 has a peak hold mechanism. By having the peak hold mechanism, the needle of the analog meter 90 remains stopped at the maximum peak, so that the measurement operator can accurately know whether or not the predetermined acceleration range has been exceeded.

<Warning means using display>
Next, an example using a display as the warning means will be described with reference to FIG. FIG. 10 is a perspective view showing an example in which the display 100 is used as the warning means 15. Since this is the one provided with the display 100 instead of the LED lamp 72, the LED lamp array 80, and the analog meter 90, the description of the same applies to the display 100 will be omitted.

With reference to FIG. 10, the display 100 may be attached anywhere as long as it is easy for the measurement operator to see, but for example, the arm 70 is near the measurement operator and easy to see. Therefore, it is preferable. Since the display 100 can display various information such as characters, figures, and graphs, the presence or absence of an erroneous operation and the degree of the erroneous operation can be displayed in various forms.

As an erroneous operation, the case where the movement angle of the probe 20 toward the measurement point is an angle that is more than a predetermined contact angle away from the probing vector will be described below as an example, but the present invention is not limited to this, and any erroneous operation may occur. It goes without saying that the display 100 can be applied.

This will be described with reference to FIG. FIG. 11 is an explanatory diagram for explaining the contact angle when the probe is brought into contact with the object to be measured. As shown in FIG. 11, the measurement operator moves the probe 20 toward the measurement point 112 of the DUT 110. The moving direction of the probe 20 at this time is indicated by an arrow 114. The line indicated by the symbol 115 indicates the direction of the probing vector of the measurement point 112 shown in the part program.

In FIG. 11, the line indicated by the symbol 115 shows the normal of the measurement point 112, which is the case where the probing vector was in the normal direction. Ideally, the measurement point 112 would be contacted along the probing vector, and the measurement operator would endeavor to do so, but in reality, the probe 20 would have an angle offset from the probing vector. (In FIG. 11, an angle deviated from the probing vector by an angle θ ₁ degree) is directed to the measurement point 112 and contacts the measurement point 112.

At this time, the erroneous operation determination means 13 (FIG. 1) determines whether or not the angle θ ₁ degree deviated from the probing vector is equal to or larger than the predetermined contact angle (θ ₀ degree in FIG. 11) described in the part program. If it is determined that the above is true, the warning means 15 (FIG. 1) is caused to issue a warning.

When the warning means 15 is the display 100 as shown in FIG. 10, the display 100 displays, for example, characters, figures, graphs, colors, patterns, animations and the like, and causes the measurement operator to make a mistaken operation. Warn that there was. At that time, the user may simply be warned that the operation was incorrect, or the degree of the incorrect operation may be displayed. The degree of erroneous operation can be displayed by characters, figures, graphs, colors, patterns, animations, and the like.

For example, the predetermined contact angle and the actual movement angle of the probe may be expressed by numerical values, or may be expressed by numerical values and graphs. Also, the movement of the probe and the predetermined contact angle may be displayed in animation. As described above, since the amount of information that can be displayed is dramatically increased by using the display 100, the amount of positional deviation from the measurement point, the moving speed and moving acceleration of the probe 20, and the deviation from the probing vector of the probe 20. It is possible to simultaneously and easily display arbitrary contents of angles.

In FIG. 10, the LED lamp 72 is installed on the arm 70 together with the display 100, but it is also possible to use it together with other types of warning means in this way. At this time, it is possible to arbitrarily set which warning means gives which warning.

<Warning means using sound generator>
Next, an example in which a sound generating device is used as the warning means will be described with reference to FIG. FIG. 12 is a perspective view showing an example in which the sound generating device 120 is used as the warning means 15. Since this is the one provided with the sound generating device 120 in place of the LED lamp 72, the LED lamp array 80, the analog meter 90, etc., the description of applying the sound generating device 120 will be omitted.

With reference to FIG. 12, the sound generator 120 may be attached to any place where the measurement operator can easily hear the sound from the sound generator 120. For example, the arm 70 is used as an attachment place for the measurement work. It is preferable because it is close to the person and the sound is easy to hear. A buzzer, a speaker, or the like can be considered as the sound generating device 120, but a speaker is preferable because it can generate sound with voice or other various tones and volumes.

When the measurement operator performs an erroneous operation while holding and moving the arm 70 by hand, the sound generation device 120 emits a sound to warn. Therefore, the measurement operator can easily know the mistake of his/her operation. The sound emitted when issuing a warning may be, for example, a buzzer sound, a melody, or a voice, that is, an arbitrary sound can be used as a warning sound.

At this time, the degree of the erroneous operation can be expressed by changing the sound. For example, if the warning sound is a buzzer sound, the volume may be increased as the degree of erroneous operation increases, or the interval of the buzzer intermittent sound decreases as the degree of erroneous operation increases, resulting in a continuous sound at the end. Is also good.

When the warning sound is a melody, the speed at which the melody is played may increase as the degree of erroneous operation increases, or the type of melody may change midway. If the warning sound is a voice, the voice may be repeatedly uttered as “caution”, or the repetitive utterance speed of the voice may be increased as the degree of the erroneous operation increases. Further, the type of voice may be changed from "caution" to "warning" or "stop", or the buzzer, melody, and voice may be used in combination or in combination.

As described above, by using the sound for the warning, the measurement operator can recognize the warning without separating the line of sight from the probe 20 or the measurement target. In FIG. 12, the LED lamp 72 is also installed on the arm 70, but it can be used together with other types of warning means in this way.

Here, the case where the probe moving speed is exceeded as an erroneous operation will be described as an example. When the measurement operator moves the probe 20 by moving the arm 70, the sound generating device 120 operates when the moving speed is higher than a predetermined speed. , The warning is issued by the method described above.

Here, as described above, the warning may be issued when the vehicle is moved faster than the predetermined speed described in the part program, or the probe 20 is set within the predetermined speed distance described in the part program. It may be performed at the same time and when moving faster than a predetermined speed. This is because the moving speed and the moving acceleration outside the predetermined speed distance or outside the predetermined acceleration distance are unlikely to cause measurement variations. However, by issuing a warning about the moving speed and the moving acceleration outside the predetermined speed distance or the predetermined acceleration distance, the measuring operator may move the moving speed and the moving acceleration before the probe 20 enters the predetermined speed distance or the predetermined acceleration distance. Will be easier to adjust.

Explaining the combination of the above-mentioned warning sounds, when the probe speed is sufficiently lower than the predetermined speed, it may be silent. When the probe speed approaches the predetermined speed, a buzzer intermittent sound is generated, and as the probe speed approaches the predetermined speed, the buzzer intermittent sound is generated. When the interval of becomes smaller and approaches a predetermined speed than a fixed value, the user may say "caution" by voice. Further, when approaching a predetermined speed, the interval of the intermittent sound of the buzzer becomes even smaller, and it may be possible to say "Warning" by voice, and when the predetermined speed is reached, the buzzer sound becomes a continuous sound, You may say "Cancel measurement" by voice.

Although the example of the combination of the warning sounds is shown above, the combination is not limited to this, and any combination is possible, and the volume may be increased as the speed approaches a predetermined speed, or the pitch of the sound may be increased. May be higher. In this way, various sound combinations are possible.

In the above description, the moving speed of the probe 20 is described as an example of the erroneous operation, but the same applies to the moving acceleration of the probe, the amount of positional deviation from the measurement point at the measurement location, and the amount of deviation from the predetermined contact angle during measurement. Can be configured to alert.

At that time, when warning is issued as to the check contents as an erroneous operation, the moving speed of the probe, the moving acceleration of the probe, the amount of positional deviation from the measurement point at the measurement location, and the amount of deviation from the predetermined contact angle at the time of measurement, By changing the tone color, pitch, melody, utterance content, etc. according to the content to be warned, it is possible to inform the measurement operator which erroneous operation has occurred.

For example, in the case of voice communication, make a measurement by uttering the content of the erroneous operation, such as “Movement speed attention”, “Movement acceleration attention”, “Measurement point position deviation attention”, “Probing angle attention”, etc. It is possible to clearly inform the operator of the contents of the erroneous operation.

<Warning means using a vibration generator>
Next, an example using the vibration generator as the warning means will be described with reference to FIG. FIG. 13 is a perspective view showing an example in which the vibration generator 130 is used as the warning means 15. Since this is the one provided with the vibration generator 130 in place of the LED lamp 72, the LED lamp array 80, the analog meter 90, etc., the description of applying the vibration generator 130 will be omitted.

With reference to FIG. 13, the vibration generator 130 may be attached anywhere as long as the measurement operator can feel the vibration from the vibration generator 130. Since it is operated by a person holding it by hand, it is preferable because vibration is easily felt. However, in this case, it is important to have a structure in which the vibration from the vibration generator 130 is not transmitted to the probe 20. When the probe 20 vibrates, the positioning becomes difficult when the probe 20 comes into contact with the measurement point, and the probe 20 electrically informs the three-dimensional measuring machine that the switch is turned on and the measurement point is contacted with a small amount of contact. This may cause a malfunction.

Therefore, for example, as shown in FIG. 14 (a diagram showing a state in which the vibration generator 130 is attached to the arm of the measurement operator), the vibration generator 130 is attached to the arm 142 of the measurement operator by the belt 140. May be. In this case, the vibration generator 130 and the three-dimensional measuring machine may be connected wirelessly or by wire, but the cord is not a hindrance to the work when connected wirelessly. preferable.

Further, as shown in FIG. 15 (a perspective view showing a state in which the vibration generator 130 is installed in a chair), the vibration generator 130 may be installed in a chair on which a measurement operator sits. In this way, the vibration generator 130 can be installed at any place where the measurement operator can feel the vibration from the vibration generator 130.

As the vibration generator 130, a commercially available vibration generator such as an unbalanced mass type, a hydraulic type, or an electrodynamic type can be adopted. The unbalanced mass type is a type in which an eccentric weight is attached to a motor to rotate the motor, and the centrifugal force thereof causes vibration. The hydraulic type is a type in which vibration is generated by moving a piston by hydraulic pressure, air pressure, electromagnetic force, or the like. The electrokinetic type is a type that utilizes Fleming's law and utilizes the force generated by passing a current through a coil in a magnetic field to generate vibration. Any type may be used, but an electrokinetic type that has a wide frequency band of vibration and is easy to miniaturize is preferable.

When the vibration generator 130 is used as the warning unit 15 and the measurement operator makes an erroneous operation, the vibration generator 130 generates vibration to warn. Therefore, the measurement operator can easily know the mistake of his/her operation. Various kinds of vibrations can be used as the vibrations generated at the time of warning, and the degree of erroneous operation can also be expressed by the type of vibration and the magnitude of the vibration.

For example, the greater the degree of erroneous operation, the greater the vibration may be, or the greater the degree of erroneous operation, the smaller the vibration generation interval may be, and finally the continuous vibration may occur.

Further, the vibration may have a rhythm, the rhythm speed may increase as the degree of erroneous operation increases, and the rhythm type may change in the middle. There are countless types of rhythms, such as “ton, toto, ton”, “ton, toto, ton, to”.

As described above, by using the vibration for the warning, the measurement operator can recognize the warning without separating the line of sight from the probe 20 or the measurement target. In FIG. 13 and FIG. 14, the LED lamp 72 is also installed on the arm 70, but it can also be used in combination with other types of warning means in this way.

Here, as an erroneous operation, taking an example of exceeding the probe moving speed, when the measurement operator moves the probe 20 by moving by holding the arm 70, when the moving speed is higher than a predetermined speed, the vibration generating device 130 , The warning is issued by the method described above.

Here, as described above, the warning may be issued when the vehicle is moved faster than the predetermined speed described in the part program, or the probe 20 is set within the predetermined speed distance described in the part program. It may be performed at the same time and when moving faster than a predetermined speed. This is because the moving speed and the moving acceleration outside the predetermined speed distance or outside the predetermined acceleration distance are unlikely to cause measurement variations. However, by issuing a warning about the moving speed and the moving acceleration outside the predetermined speed distance or the predetermined acceleration distance, the measuring operator can move the moving speed and the moving acceleration before the probe 20 enters the predetermined speed distance or the predetermined acceleration distance. Will be easier to adjust.

Explaining the combination of the above-mentioned vibrations, if the probe speed is sufficiently smaller than the predetermined speed, it may be non-vibration, and intermittent vibration occurs when approaching the predetermined speed to some extent. When the velocity becomes smaller and approaches a predetermined speed than a constant value, the vibration may continue and the strength of the vibration may increase.

In the above, an example of vibration combination is shown, but the invention is not limited to this, and any combination is possible, and the strength of vibration may be increased as the speed approaches a predetermined speed, or the vibration rhythm may be increased. May change. In this way, various vibration combinations are possible.

In the above description, the moving speed of the probe 20 is described as an example of the erroneous operation, but the same applies to the moving acceleration of the probe, the amount of positional deviation from the measurement point at the measurement location, and the amount of deviation from the predetermined contact angle during measurement. Can be configured to alert.

At that time, when warning is issued as to the check contents as an erroneous operation, the moving speed of the probe, the moving acceleration of the probe, the amount of positional deviation from the measurement point at the measurement location, and the amount of deviation from the predetermined contact angle at the time of measurement, Other warning means may be used together to give a warning depending on the content of the warning.

As above, various methods have been described as examples of the warning means, but the present invention is not limited to these, and the warning means described above can be used in any combination, and the contents of the erroneous operation to be applied are also included. You can choose arbitrarily.

10 measuring means 11 computing means 12 display means 13 erroneous operation judging means 14 measurement condition storing means 15 warning means 20 probe 21 three-dimensional moving means 22 table 23 X-axis slider 24 Y-axis slider 25 Z-axis slider 26 pedestal 27 surface plate 28 computer 29a Display 29b Printers 32a, 32b, 32c, 32d, 32e Joints 34a, 34b, 34c, 34d Arm 70 Arm 72 LED lamp 80 LED lamp array 90 Analog meter 100 Display 110 Object to be measured 112 Measurement point 120 Sound generator 130 Vibration generator 140 belt 142 arms 150 chair

Claims (6)

A three-dimensional measuring machine for manually measuring by contacting a probe with a measurement point of a work,
The operation of the probe is based on an erroneous operation condition that is set for each of the measurement points and is out of the predetermined measurement condition for each of the measurement points, and the operation is outside the predetermined measurement conditions. Equipped with a warning means to give a warning in case of a certain malfunction ,
A three-dimensional measuring machine in which the erroneous operation is at least one or more of the following (1) to (3).
(1) The moving speed of the probe is equal to or higher than a predetermined speed.
(2) The acceleration of movement of the probe is not less than a predetermined acceleration.
(3) The probe is moved and contacted with the measurement point at an angle away from a predetermined direction by a predetermined angle or more to perform measurement. The coordinate measuring machine according to claim 1, wherein the warning means issues a warning by one or more of sound, light, vibration, and display on a monitor screen. The warning means at least sounds a warning,
The three-dimensional measuring machine according to claim 2, wherein any one or more of the frequency, the loudness, and the sound generation interval of the sound changes as the degree of deviation from the measurement condition increases. The warning means at least emits a warning by light,
The three-dimensional measuring machine according to claim 2, wherein any one or more of the color, intensity, and blinking interval of the light changes as the degree of deviation from the measurement condition increases. The warning means at least gives a warning by vibration,
The three-dimensional measuring machine according to claim 2, wherein any one or more of the frequency, the intensity, and the vibration generation interval of the vibration changes as the degree of deviation from the measurement condition increases. The three-dimensional measuring machine according to claim 1, further comprising a meter indicating the degree of deviation from the measurement condition as the warning means.

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