JP2967854B2 - Measurement method and device for coordinate measuring machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring a coordinate measuring machine, and more particularly to a method and an apparatus for measuring a coordinate measuring machine operated manually or by a joystick.

[0002]

2. Description of the Related Art In a coordinate measuring machine, a probe is two-dimensional (X.multiplier).
Measuring an object to be measured of a workpiece, which is supported movably in two axes directions such as Y and three dimensions (three axes directions of X, Y and Z) and detects a coordinate position of a probe on each axis. The size and shape of the work are calculated by calculating data (measurement data) of the coordinate position of the probe when the probe is brought into contact with the position. FIG. 9 shows a perspective view of the three-dimensional coordinate measuring machine. A three-dimensional coordinate measuring machine 10 shown in FIG.
The right Y carriage 13 and the left Y carriage 14 are erected on both sides of the table 12, and the upper parts of the right Y carriage 13 and the left Y carriage 14 are X guides 15.
To form a portal. Sliding surfaces are formed on the upper surface and side surfaces on both sides of the table 12 in the Y-axis direction, and air bearings opposed thereto are provided on the right Y carriage 13 and the left Y carriage 14.
The left Y carriage 14 and the X guide 15 are movable in the Y axis direction. Further, a sliding surface in the X-axis direction is formed on the X guide 15, and the X guide 15 has a built-in air bearing.
A carriage 16 is provided movably in the X-axis direction. Further, the X carriage 16 has a built-in air bearing for guiding in the Z-axis direction, along which a Z spindle 17 is provided so as to be movable in the Z-axis direction. At the lower end of the Z spindle 17, a probe operation grip 18 is provided, and an electronic probe 19 is attached. Accordingly, the electronic probe 19 can be freely moved in the three axes of X, Y, and Z, and the electronic probe 19 can be moved in the three directions of X, Y, and Z by holding the probe operation gripping part 18 by hand. it can.

Further, a scale is provided in the Y-axis direction of the table 12, the X guide 15 and the Z spindle 17, a detection head in the Y-axis direction is provided on the right Y-carriage 13, and the X-axis direction and the Z-axis are provided on the X carriage 16. A direction detecting head is attached, and detects a three-dimensional coordinate position of the electronic probe 19. The electronic probe 19 is provided with a feeler 19a, and a signal is output at the moment when the feeler 19a abuts on the workpiece. Therefore, the workpiece on which the feeler 19a abuts on the basis of the coordinate position of the electronic probe 19 when the signal is output. The coordinate position of the measurement position is detected. Also, the gantry 11
A stand 21 is provided, and an operation panel 22 is attached to the stand 21. The operation panel 22 is provided with various keys including a measurement end key.

[0004] The three-dimensional coordinate measuring machine 1 configured as described above.
When measuring a workpiece at 0, as shown in the flowchart of FIG. 10, the operator inputs the geometric shape of the measurement target (“circle” in the case of a hole diameter or a shaft diameter) from the operation panel 22 (step 141), measurement is performed by bringing the feeler 19a of the electronic probe 19 into contact with a measurement position of a work (not shown) placed on the table 12, and measurement of the number of points required for the geometric shape of the measurement target is completed (step 142), the measurement end key 23 of the operation panel 22 is pressed to input a measurement end signal (step 143), and the measurement of one measurement target is ended. The three-dimensional coordinate position of the electronic probe 19 when it comes into contact with the workpiece is sent to a data processing unit (not shown) each time, but the data processing unit waits for measurement data input until a measurement end signal is input. When a measurement end signal is input, the measurement data input so far is calculated based on the geometric shape input from the operation panel 22, a measurement value of one measurement target is calculated, and the result is output. (Step 14
4). In this case, usually, the operator moves the electronic probe 19 while holding the probe operation grip 18 with the left hand, and presses the measurement end key 23 with the right hand.

[0005] A method of eliminating the need to input a geometric shape of a measurement object from an operation panel is disclosed in Japanese Patent Application No. 05-04800.
No. 3 "has been proposed by the present applicant. This method automatically determines the geometric shape from each measurement data, and can greatly improve the efficiency of the measurement operation. FIG. 11 shows a flowchart of the operation. Worker at table 1
The measurement is performed by bringing the feeler 19a of the electronic probe 19 into contact with the measurement position of the work (not shown) placed on the work 2 and measuring the number of points required for the geometric shape of the measurement target (Step 151). The measurement end signal is input by pressing the measurement end key 23 of the panel 22 (step 152), and the measurement of one measurement object is ended. The three-dimensional coordinate position of the electronic probe 19 at the time of contact with the workpiece is sent to a data processing unit (not shown) each time, and when a measurement end signal is input, the geometrical shape is automatically obtained from the input measurement data. (Step 153), the measurement data is calculated, the measurement value of one measurement target is calculated, and the result is output (step 15).
4).

In the case of a coordinate measuring machine operated by a joystick, an electric drive mechanism is built in each axis, and the electronic probe 19 is moved by the joystick instead of holding the probe operation grip 18 by hand. The operation is the same as that in the case of the manual operation, and the description is omitted.

[0007]

However, FIG.
In the case of manual operation by the conventional method shown in FIG. 1, the measurement end key 23 is on the operation panel 22 and the operation panel 22 is separated from the electronic probe 19, so that when pressing the measurement end key 23, An eye must be kept away from the probe 19. As a result, the electronic probe 19 is inadvertently moved to bring the feeler 19a of the electronic probe 19 into contact with the workpiece (particularly, a small hole or the like), and a signal unnecessary for the measurement is output. There is a possibility that the workpiece, the electronic probe 19 and the Z spindle 17 may be damaged by contacting the workpiece or the Z spindle 17 with the workpiece. In order to avoid this, there is a method of clamping each axis of the coordinate measuring machine 10 before pressing the measurement end key 23 so that the electronic probe 19 does not move. There is a problem that it takes time for output or measurement. Further, every time the measurement of one measurement object is completed, it is necessary to move the hand or the line of sight to the operation panel 22 and press the measurement end key 23, so that there is a problem that the measurement takes time.

Also, in the case of manual operation by the conventional method shown in FIG. 11, it is not necessary to input the geometric shape of the object to be measured, but the measurement end key 23 is depressed every time the measurement of one object to be measured is completed. This is necessary, and has the same problem as in the case of manual operation in the conventional method shown in FIG. Further, in the case of a coordinate measuring machine operated by a joystick, the electronic probe 19 stops moving when the user releases his / her hand from the joystick. And Z
Although there is little risk of damaging the spindle 17, it is necessary to move the hand or the line of sight to the operation panel 22 and press the measurement end key 23 each time the measurement of one measurement object is completed. is there.

The present invention has been made in view of such circumstances, and provides a measuring method of a coordinate measuring machine which does not require pressing the measurement end key 23 every time measurement of one measurement object is completed, and a device therefor. The purpose is to:

[0010]

According to the present invention, in order to achieve the above object, in the method and the apparatus according to the first and third aspects, the geometric shape of the object to be measured is automatically determined from the measurement data.
Work with manual or joystick operation
Measurement method of a coordinate measuring machine
Measure the target and measure the first point of the next measurement target
And, judging that the measurement of the one measurement object has been completed,
Outputting the measurement end signal of the one measurement object.
Characterized in that was. In the method and the apparatus according to claims 2 and 4, the coordinate measuring machine having a function of automatically discriminating a geometric shape of a measurement target from measurement data and measuring a workpiece manually or by a joystick operation is provided. A data capturing unit that captures data measured by the machine, a geometric shape determining unit that sequentially determines a geometric shape from the data output from the data capturing unit, an input unit that inputs the number of continuations, and the geometric shape determining unit. A number discriminator that outputs a signal when the number of times of counting the same continuation number of the outputted geometric shape satisfies the number of continuations input to the input unit, and a signal output from the number discrimination unit. A measurement end output unit that outputs a measurement end signal and informs an operator by a transmission unit, and outputs from the data acquisition unit when output from the measurement end signal from the measurement end output unit. And a calculation output unit for calculating the measured data based on the geometric shape output from the geometric shape discriminating unit and outputting a measurement result, inputting the number of continuations from the input unit, and processing the workpiece with the coordinate measuring machine. When measuring, the geometric shape is sequentially determined from the measured measurement data, the same continuation number of the determined geometric shape is counted, and a signal is output when the counted number satisfies the input continuation number. Output, output a measurement end signal based on the output signal, notify the operator by a transmission means, and when the measurement end signal is output, calculate and measure the measured data based on the determined geometric shape. Output result.

According to a fifth aspect of the present invention, in the measuring method of the coordinate measuring machine for continuously measuring the same geometric shape of the work manually or by operating the joystick, the geometric shape to be measured is input from the input unit. Then, the work is measured by the coordinate measuring machine, and when the measurement of one measurement object is completed and the first point of the measurement object next to the measurement object is measured by the coordinate measurement machine, a measurement end signal is output and transmitted. Then, when the measurement end signal is output, the measured data is calculated based on the input geometric shape and the measurement result is output.

According to a sixth aspect of the present invention, in the measuring method of the coordinate measuring machine for measuring the work manually or by operating the joystick, the geometric shape of the object to be measured is input from an input unit, and the work is measured by the coordinate measuring machine. When the measurement of one measurement object is completed and a point not related to the measurement object is measured by the coordinate measuring machine, a measurement end signal is output and the operator is notified by a transmission means, and the measurement end signal is output. Then, the measured data is calculated based on the input geometric shape, and a measurement result is output.

According to a seventh aspect of the present invention, in the measuring method of the coordinate measuring machine for measuring the work manually or by operating the joystick, the geometrical shape of the object to be measured is inputted from the input section, and the coordinate measuring machine is operated by the coordinate measuring machine. The work is measured, and when the measurement of one measurement object is completed and the geometric shape of the next measurement object is input, a measurement end signal is output and notified to a worker by a transmission means, and when the measurement end signal is output, the measurement is performed. The calculated data is calculated based on the input geometric shape, and a measurement result is output.

[0014]

According to the method and the apparatus according to the first and third aspects, when one measurement object is measured and the first point of the next measurement object is measured, it is determined that the measurement of one measurement object is completed. Then, a measurement end signal of one measurement target is output. Further, in the case of the method and the device according to claims 2 and 4, after the operator inputs the number of continuations from the input section, the operator contacts the feeler of the electronic probe with the measurement position of the work placed on the table. If the measurement is continued until it is notified that the measurement end signal has been output, for example, by sounding a buzzer, the measured data is calculated and the measurement result is output.

In the case of the method according to the fifth aspect, after the operator inputs the geometric shape to be measured from the input section, the feeler of the electronic probe is moved to the measurement position of the work placed on the table. After measuring the contact points and completing the input of the number of points required for measurement, when the first point of the next measurement object is measured, a measurement end signal is output to inform the operator with a buzzer etc. and the measured data is calculated. And the measurement result is output.

In the case of the method described in claim 6, after the operator inputs the geometrical shape of the object to be measured from the input unit, the feeler of the electronic probe is set at the measuring position of the work placed on the table. After the measurement of the points in contact with each other and the input of the number of points required for the measurement are completed, when one point that is not related to the previous measurement object is measured, a measurement end signal is output and the operator is notified with a buzzer or the like, and the measurement is performed. The data is calculated and the measurement result is output.

In the method according to the present invention, after the operator inputs the geometrical shape of the object to be measured from the input section, the operator sets the feeler of the electronic probe at the measuring position of the work placed on the table. After the measurement is completed by contacting and inputting the number of points required for measurement, when the geometrical shape of the next measurement object is input from the input unit, a measurement end signal is output and the operator is notified by a buzzer etc. Is calculated and the measurement result is output.

[0018]

FIG. 1 is a block diagram showing a first embodiment according to the present invention. The first embodiment corresponds to the method and the device according to the first and second aspects. In FIG. 1, data measured by the three-dimensional coordinate measuring machine 10 is captured by a data capturing unit 31, and the captured data is sent to a geometric shape determining unit 32, where the geometric shapes are sequentially determined. Before measurement, the operator inputs the number of continuations from the input unit 30 such as the operation panel 22. The input continuation number is sent to the number determination unit 33,
The number-of-times discriminating unit 33 receives the geometric shape discrimination result from the geometric shape discriminating unit 32, and the number-of-times discriminating unit 33 determines that the geometric shape discriminating result satisfies the continuation number output from the input unit 30. Output the signal. The measurement end output unit 34 outputs a measurement end signal when the signal from the number-of-times discrimination unit 33 is input, and notifies the operator by a transmission means such as a buzzer. In the data calculation output unit 35, when the measurement end signal is output from the measurement end output unit 34, the measurement data transmitted from the data acquisition unit 31 is calculated based on the geometric shape output from the geometric shape determination unit 32,
Output the measurement results on a CRT or printout.

FIG. 2 shows a flowchart of the first embodiment according to the present invention. After the operator inputs the number of continuations from the input unit 30 (Step 101), the work is measured by the three-dimensional coordinate measuring machine 10 (Step 102), and the geometric shape is automatically determined by the geometric shape determination unit 32 (Step 102). 103). Next, the same continuation number of the determined geometric shape is counted (step 104),
It is determined whether the same number of continuations of the geometric shape satisfies the number of continuations input from the input unit 30 (step 105). If satisfied, a measurement end signal is output and the operator is notified by a transmission means such as a buzzer (step 106). Thereafter, the measured data is calculated, and the measurement result is output (Step 107).

FIGS. 3, 4, and 5 show specific examples of the first embodiment. FIG. 3 shows the number of continuations when measuring the reference line =
In this example, the number is 2. When the operator inputs the number of times of continuation = 2 and measures a portion that becomes a reference line (“line” in the geometric shape) of the workpiece, the geometric shape determination unit 32 determines that the geometric shape to be measured is one point. If it is a “point” or two points, it is determined to be a “line”. If the measurement is continued and it is determined that the line is a “line” after the third measurement and the “line” is also after the fourth measurement, a measurement end signal is output after the fourth point is input.

FIG. 4 shows an example where the number of continuations is 2 when measuring a hole. When the operator inputs the number of continuations = 2 and measures the hole (“circle” in the geometric shape) of the work, the geometric shape discriminating unit 32 determines the geometric shape to be measured as “point” when the measurement point is one point, If two points, a line is determined, and if three points, a circle is determined. (If the third measurement point is a point close to the line determined by the second point, as in the example shown in FIG. 3) Although the third point is also determined to be a “line”, it is assumed here that a worker measures a hole, so that a point determined to be a “circle” is measured). If the measurement is continued and it is determined that the circle is “circle” even after the measurement at the fourth point and the circle is also measured after the measurement at the fifth point, a measurement end signal is output after the input of the fifth point.

FIG. 5 shows an example where the number of continuations is 3 when measuring a hole. When the operator inputs the number of continuations = 3 and measures the hole (“circle” in the geometric shape) of the workpiece, the geometric shape discriminating unit 32 determines the geometric shape to be measured as “point” when the measurement point is one point, At two points, a line is determined, and at three points, a circle is determined (assumed in the same manner as in FIG. 4). When the measurement is continued and all the points after the fourth, fifth, and sixth points are determined to be "circles", a measurement end signal is output after the sixth point is input. As apparent from the description of FIG. 3, FIG. 4, and FIG. 5, when the same geometric shape is determined to be “continuation number + 1” times, a measurement end signal is output.

Therefore, after inputting the number of continuations from the input unit 30 such as the operation panel 22, the operator applies the feeler 19 a of the electronic probe 19 to the measurement position of the work (not shown) placed on the table 12. If the measurement is continued until it is notified that a measurement end signal has been output, for example, when a buzzer sounds, the measured data is calculated and the measurement result is output.

FIG. 6 shows a flowchart of a measuring method of the coordinate measuring machine according to the second embodiment of the present invention. The second embodiment is a case in which a measurement object having the same geometric shape is continuously measured by the method according to the fifth aspect. The operator inputs the geometric shape of the measurement target (“circle” in the case of a hole diameter or a shaft diameter) to the operation panel 22
After input from the input unit 30 (step 111), the feeler 19a of the electronic probe 19 is brought into contact with the measurement position of the work (not shown) placed on the table 12 to measure (step 112), and the measurement is performed. After the input of the number of points necessary for the measurement is completed, when the first point of the next measurement object (the geometric shape is a “circle” as in the previous measurement object) is measured (step 113),
A measurement end signal is output and the operator is notified by a buzzer or the like (step 114), the measured data is calculated, and the measurement result is output (step 115).

FIG. 7 shows a flowchart of a measuring method of a coordinate measuring machine according to a third embodiment of the present invention. The third embodiment is a case of the method according to the sixth aspect. After the operator inputs the geometric shape of the measurement target (“circle” in the case of a hole diameter or a shaft diameter) from the input unit 30 such as the operation panel 22 (step 121),
The measurement is performed by bringing the feeler 19a of the electronic probe 19 into contact with the measurement position of the work (not shown) placed on the table 12 (Step 122). When one unrelated point is measured (step 123), a measurement end signal is output to notify the operator with a buzzer or the like (step 124), the measured data is calculated, and the measurement result is output (step 125). .

FIG. 8 shows a flowchart of a measuring method of a coordinate measuring machine according to a fourth embodiment of the present invention. Embodiment 4 is a case of the method according to claim 7. After the operator inputs the geometric shape to be measured (in the case of a hole diameter or a shaft diameter, “circle”) from the input unit 30 such as the operation panel 22 (step 131), the operator places the geometric shape on the table 12. The feeler 19a of the electronic probe 19 is brought into contact with the measurement position of the work (not shown) to measure (step 132), and after the input of the number of points required for the measurement is completed, the geometric shape of the next measurement object is input from the operation panel 22. Then (step 133), a measurement end signal is output and the operator is notified by a buzzer or the like (step 134), the measured data is calculated, and the measurement result is output (step 135).

In the first embodiment, the case of manual operation has been described. However, the present invention is not limited to this, and the present invention can be applied to a case of operating with a joystick. Although the operating method has not been particularly described in the second, third, and fourth embodiments, it is needless to say that the present invention can be applied to both manual and joystick operations. Also, the coordinate measuring machine has been described with reference to the moving gate type three-dimensional coordinate measuring machine shown in FIG. 9, but the one shown in FIG. 9 is an example, and is not limited thereto. The present invention can be applied to a measuring machine and a two-dimensional coordinate measuring machine, even when the operation panel is located at another position.

[0028]

As described above, according to the method and apparatus for measuring a coordinate measuring machine according to the present invention except for claim 7, the operator can complete the measurement of one measuring object. It is not necessary to press the measurement end key each time the measurement is performed, and it is not necessary to clamp each axis or remove the hand or the line of sight from the electronic probe each time measurement of one measurement object is completed, so that the measurement efficiency is improved. In addition, especially in the case of manual operation, the electronic probe is inadvertently moved, the feeler of the electronic probe is brought into contact with the work, and a signal unnecessary for measurement is output. There is no danger of damage to the workpiece, electronic probe or Z spindle. Further, according to the measuring method of the coordinate measuring machine according to the seventh aspect of the present invention, it is not necessary to press the measurement end key each time the measurement is completed, so that the measurement efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment according to the present invention.

FIG. 2 is a flowchart of a first embodiment according to the present invention.

FIG. 3 is a diagram showing a first specific example of the first embodiment according to the present invention.

FIG. 4 is a diagram showing a second specific example of the first embodiment according to the present invention.

FIG. 5 is a diagram showing a third specific example of the first embodiment according to the present invention.

FIG. 6 is a flowchart of a second embodiment according to the present invention.

FIG. 7 is a flowchart of a third embodiment according to the present invention.

FIG. 8 is a flowchart of a fourth embodiment according to the present invention.

FIG. 9 is a perspective view of a three-dimensional coordinate measuring machine.

FIG. 10 is a flowchart of a measuring method of the conventional coordinate measuring machine without the automatic geometric shape discriminating function.

FIG. 11 is a flowchart of a conventional measuring method of a coordinate measuring machine with an automatic geometric shape discriminating function.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 3D coordinate measuring machine 17 Z spindle 18 Probe operation gripping part 19 Electronic probe 22 Operation panel 23 Measurement end key 101 Number input step 102 Measurement step 103 Geometric shape discrimination step 104 Number counting step 105 Number discrimination step 106 Measurement end output step 107 Calculation output process

Claims (7)

(57) [Claims] 1. A method for automatically determining a geometric shape of a measurement target from measurement data.
It has a function to determine the
In the measuring method of the coordinate measuring machine that measures the work by work, Measure the first geometric shape of the measurement object, and
When measuring the first point of the shape, the measurement of the first geometric shape
Is completed, and the measurement of the first geometrical shape ends.
Measurement, characterized in that an end signal is output.
Machine measurement method. 2. A has the function of automatically determining the geometric shape of the measurement object from the measurement data, in the measurement method of the coordinate measuring machine for measuring the workpiece in manual or joystick operation, the number of times an input step of inputting successive number A measuring step of measuring a workpiece with the coordinate measuring machine , a geometric shape determining step of sequentially determining a geometric shape from the measurement data measured in the measuring step, and the same continuation of the geometric shape determined in the geometric shape determining step. A number counting step of counting the number of times, a number determining step of outputting a signal when the number counted in the number counting step satisfies the continuation number input in the number input step, and a number output step. A measurement end output step of outputting a measurement end signal by the output signal, and when the measurement end signal is output in the measurement end output step ,
A calculation output step of calculating data measured in the measurement step based on the geometric shape determined in the geometric shape determination step and outputting a measurement result. 3. Automatically determine the geometric shape of a measurement target from measurement data.
It has a function to determine the
In a coordinate measuring machine that measures a workpiece in a work, data acquisition that captures data measured by the coordinate measuring machine is performed.
And a geometrical shape from the data sent from the data acquisition unit.
A geometry measuring unit for sequentially measuring Jo, measuring the first geometric shape of the measurement object in the geometry measurement unit
After the setting is made, the first point of the next geometric shape is measured
And that the measurement of the first geometric shape has been completed.
Output the measurement end signal of the first geometrical shape.
A measurement device for a coordinate measuring machine, comprising: a fixed end output unit . 4. A has the function of automatically determining the geometric shape of the measurement object from the measurement data, in the manual or coordinate measuring machine for measuring the workpiece in joystick operation, captures the data measured by the coordinate measuring machine data A capturing unit; a geometric shape determining unit for sequentially determining a geometric shape from data transmitted from the data capturing unit; an input unit for inputting the number of continuations; and the same continuation of the geometric shape output from the geometric shape determining unit. A counting unit that counts the number of times and outputs a signal when the counted number satisfies the continuation number input to the input unit; and a measurement that outputs a measurement end signal based on the signal output from the number of time determination unit. End output unit, when a measurement end signal is output from the measurement end output unit,
A calculation output unit that calculates the measurement data output from the data acquisition unit based on the geometric shape output from the geometric shape determination unit, and outputs a measurement result. measuring device. 5. A measuring method for a coordinate measuring machine for continuously measuring the same geometrical shape of a workpiece manually or by operating a joystick, wherein a geometrical shape inputting step of inputting a geometrical shape of an object to be measured from an input unit; A measuring step of measuring a workpiece to be measured by a measuring machine; a next measuring start step of measuring the first point of the next measuring object by the coordinate measuring machine; and a next measuring object in the next measuring start step. A measurement end output step of outputting a measurement end signal when the first point is measured, and when a measurement end signal is output in the measurement end output step ,
A calculation output step of calculating the data measured in the measurement step based on the geometric shape input in the geometric shape input step, and outputting a measurement result. 6. A measuring method of a coordinate measuring machine for measuring a work manually or by operating a joystick, wherein: a geometric shape inputting step of inputting a geometric shape of a measuring object from an input unit; a measuring step of measuring, and dummy measurement step of measuring points not related to the measurement target in the coordinate measuring machine, wherein a point unrelated to the measurement target in the dummy measurement step is measured a measurement completion signal output When the measurement end output step and the measurement end signal are output in the measurement end output step,
A calculation output step of calculating the data measured in the measurement step based on the geometric shape input in the geometric shape input step, and outputting a measurement result. 7. A method for measuring a workpiece by manual or joystick operation, comprising the steps of: inputting a geometric shape of an object to be measured from an input unit; A next geometric shape input step of inputting a geometric shape of the next measurement target of the measurement target from the input unit, and a geometric shape of the next measurement target is input in the next geometric shape input step. Measurement end output step to output a measurement end signal
When a measurement end signal is output in the measurement end output step,
A calculation output step of calculating the data measured in the measurement step based on the geometric shape input in the geometric shape input step, and outputting a measurement result.