JPH0666559A - Roundness measuring apparatus - Google Patents

Abstract

PURPOSE:To simplify the operation of inclination regulating means without complicating a leveling operation by operating the means in a trial and error manner when the operation of leveling for bringing a center line of a rotary element to be measured placed on a placing table in parallel or into coincidence with an axis of rotation of rotating means is conducted. CONSTITUTION:A roundness measuring apparatus 1 has inclination regulating means for regulating the inclination of a placing table 3 by an arbitrary amount, and comprises inclination correcting amount calculating means 31 for calculating an inclination correcting amount for bringing an inclination of a center line of a rotary element 11 to be measured in parallel or into coincidence with an axis of rotation of rotating means 5 when the inclination of the center line of the element 11 to the axis of rotation of the means 5 when placed on the table 3 is obtained, and display means 10 for displaying a calculated result of the means 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roundness measuring machine for measuring the roundness of a rotating object to be measured. In particular, it relates to an improvement for determining the amount of inclination correction of the mounting table with respect to the base when the center line of the rotating object to be measured is parallel to or coincident with the axis of rotation of the rotating means.

[0002]

2. Description of the Related Art In a roundness measuring machine, it is necessary to measure a rotating object to be measured after aligning its center line with the axis of rotation of a rotating means, that is, after performing so-called leveling. There is. The leveling work for making the center line of the rotating object to be measured parallel or coincident with the axis of rotation of the rotating means by the means has been conventionally performed at a plurality of different height positions of the rotating object to be measured mounted on the mounting table. Obtain the centers of the individual pieces, and perform tilt correction by trial and error based on the inclination of the straight line connecting the centers to make the center line of the rotating object to be measured parallel or coincide with the axis of rotation of the rotating means. Was there.

[0003]

DISCLOSURE OF THE INVENTION In a conventional roundness measuring machine of manual leveling type, a plurality of centers are obtained at different height positions of a rotating object to be measured placed on a mounting table. Thus, it is possible to obtain the inclination with respect to the axis of rotation of the linear rotating means formed by connecting the centers thereof. However, since the amount to be operated by the tilt adjusting means cannot be known, the tilt adjusting means must be tried and errored by trial and error in order to make the center line of the object to be measured parallel or coincide with the axis of rotation of the rotating means. There is a problem that the leveling work is complicated because it has to be operated. This invention
In view of the above circumstances, when performing the leveling work in which the center line of the rotating object to be measured placed on the placing table is parallel to or coincides with the axis of rotation of the rotating means, the inclination is The leveling work does not become complicated by operating the adjusting means by trial and error,
It is intended to provide a roundness measuring machine capable of easily operating an inclination adjusting means.

[0004]

According to the present invention, there is provided tilt adjusting means for adjusting the tilt of the mounting table with respect to the axis of rotation of the rotating means by an arbitrary amount, and the axis of rotation of the rotating means. On the other hand, when the inclination of the center line of the rotating object to be measured when it is mounted on the mounting table is obtained, the inclination correction amount for calculating the inclination in parallel with or coincident with the axis of rotation of the rotating means is calculated. The roundness measuring device is configured to display the value.

The detailed construction is as follows: a mounting table for mounting a rotating object to be measured, a roundness detecting means for detecting the roundness of the rotating object to be measured, the roundness detecting means and the mounting means. A rotating means for relatively rotating the table and a mounting table for adjusting inclinations in different directions with respect to a plane orthogonal to an axis of rotation of the rotating means, respectively. First and second inclination adjusting means are provided, and in addition, when the inclination of the center line of the rotating object to be measured when mounted on the mounting table with respect to the axis of rotation of the rotating means is obtained, Inclination amount calculation means for calculating the correction amounts of the two inclinations with respect to the operating directions of the first and second inclination adjustment means, and a display for displaying the inclination amounts in the two directions calculated by the inclination amount calculation means. It is a roundness measuring machine provided with means.

The inclination of the center line of the rotating object to be measured placed on the mounting table with respect to the axis of rotation of the rotating means is measured at a plurality of centers at different height positions of the rotating object to be measured. It is obtained as the inclination of the straight line connecting the centers of these with respect to the axis of rotation of the rotating means. In addition, the center is specifically the relative rotation of the mounting table on which the rotating object to be measured is placed and the roundness detecting means, and the circularity detecting means causes the circumference of the rotating object to be measured from the center of rotation. It is obtained by detecting a plurality of distances to the upper point and obtaining an average circle of radii that minimizes the sum of squares of the differences between the detected values. In addition, based on the fact that a point with the same distance from three points is the center of a circle that includes these three points on the circumference, take three or more points from the circumference of the rotating object to be measured, The coordinates are calculated, the centers of the circles related to the three points taken from the centers are calculated, and the more accurate center is obtained from the plurality of centers obtained here.

[0007]

When the inclination of the center line of the rotating object to be measured when it is mounted on the mounting table with respect to the axis of rotation of the rotating means is obtained, the inclination correction amount calculating means detects the first and second inclinations. The second inclination adjusting means calculates two inclination correction amounts concerning the acting direction, and the display means displays the inclination amounts in the two directions calculated by the inclination correction amount calculating means.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the embodiments shown in FIGS. However, the present invention is not limited to this embodiment. The roundness measuring machine 1 is shown in FIGS.
As shown in FIG. 3, the base 2, the mounting table 3, the roundness detecting means 4, the rotating means 5, the moving means 6 and 7, the tilt adjusting means 8 and 9, and the center position calculating means. A distance calculation means, a tilt amount calculation means, a tilt correction amount calculation means, and a display means 10.

The base 2 holds the roundness detecting means 4 at a fixed position, and fixes an output motor (not shown) of the rotating means 5 internally to fix the rotating means 5 at a fixed position. Holding in. The mounting table 3 is for mounting the rotating object to be measured 11, is mounted on the upper part of the rotating means 5, and is rotated by being driven by the rotating means 5 (arrow A). direction).

The roundness detecting means 4 detects the roundness of the object to be measured 11 when it is placed on the placing table 3 and rotates, and includes a detector 12, an amplifier, and a synchronous rectification. It is configured by including a circuit, an A / D converter, a transmitter (above, not shown), and the like. The detector 12 has a holding means 13
In the radial direction with respect to the axis of the rotating means 5 (arrow B
Direction) Holds slidably. Holding means 13
Has an output motor (not shown), can automatically feed in the radial direction with respect to the axis of the rotating means 5, and has a scale (not shown) to detect the fed amount. It is configured to be possible. Further, the holding means 13 is
It is held so that it can be moved up and down (direction of arrow C) by the elevating means 14. The elevating means 14 has an output motor (not shown) for automatic elevating, and has a scale (not shown) for detecting the amount of elevating. Therefore, the roundness detecting means 4 is configured to be able to detect the roundness of the measured rotating object 11 placed on the placing table 3 at an arbitrary height position.

The rotating means 5 includes a rotation base 15, the output motor, a coupling (not shown) for coupling the output motor and the rotation base 15 to transmit the driving force of the output motor to the rotation base 15, and the rotation base 15. A rotary encoder (not shown) that detects rotation is provided. The rotating base 15 is an air bearing (not shown).
It is rotatably supported at a fixed position and a fixed posture with respect to the base 2. The rotary base 15 mounts the mounting table 3 via a disc-shaped plate member 16 to apply a rotational driving force. Therefore, the rotating means 5 is
The rotating object to be measured 11 placed on the placing table 3 is rotated by the output of the output motor with respect to the roundness detecting means 4 fixed to the base 2 side. The detection means 6 and 7 are arranged at positions where their respective forces act in directions orthogonal to each other.

The moving means 6 has a moving amount display function and can act (feed) any amount of the micrometer head 1.
7, a microphone murometer head 17 is internally fixed and the mounting table 3 is mounted, and a plate member 16 movable on a horizontal plane with respect to the rotation base 15, a micrometer head 17, and a rotation base 15. It is interposed between the shaft portions 18, and the pressing force of the micrometer head 17 is applied to the rotary base 1.
5 to the intermediate member 19 and the micrometer head 1
It is mainly composed of a spring 20 which applies a biasing force to the plate member 16 in the direction opposite to the pressing force of 7. The forces of the micrometer head 17 and the spring 20 act in the direction of arrow D.

The moving means 7 is constructed similarly to the moving means 6. The moving means 7 acts on the mounting tadal 3 with respect to the rotating means 5 in a direction orthogonal to the acting direction of the moving means 6. Therefore, by the action (feeding) of the moving means 6 and 7, the mounting table 3 is moved relative to the rotary base 15, that is, the mounting table 3 is moved relative to the axis of rotation of the rotating means 5 by its axis. It is possible to move in the direction of the arrow D and the direction orthogonal to it on the planes orthogonal to each other by an arbitrary amount, and to rotate the measured rotating object 11 mounted on the mounting table 3 by the rotating means 5. It is possible to move by any amount in any direction on a plane orthogonal to the axis line of. The tilt adjusting means 8 and 9 are arranged at positions where respective forces act in directions orthogonal to each other.

The tilt adjusting means 8 includes a mounting table 3 and
A micrometer head 21 having a movement amount display function and capable of acting (feeding) an arbitrary amount, a plate member 16 that internally fixes the micrometer head 21 and mounts the mounting table 3, and a spring 20. And is fixed to the mounting table 3 in a suspended state, and the forces acting on the mounting table 3 engage with the micrometer head 21 and the spring 20, which are in opposite directions, so that the mounting table 3 moves from the micrometer head 21 and the spring 20. Further, it is mainly configured by an intermediate member 22 that transmits a pressing force for controlling the posture of the mounting table 3 with respect to the plate member 16. Then, an annular partial spherical surface portion 23 is formed at the bottom of the mounting table 3, and an annular step difference portion 24 is formed at the upper portion of the plate member 15, so that the partial spherical surface portion 23 is stepped portion 24. The mounting table 3 is mounted on the plate member 16 in a state of being engaged with. Therefore, when the tilt adjusting means 8 is operated, the mounting table 3 is moved to the plate member 16
With respect to the rotary base 16, that is, the mounting table 3 is tilted in the direction of arrow E with respect to the base 2.

The tilt adjusting means 9 is constructed similarly to the tilt adjusting means 8. The tilt adjusting means 9 performs tilt correction on the mounting table 3 with respect to the base 2 in a direction orthogonal to a plane including the acting direction of the tilt adjusting means 8. Therefore, due to the operation of the tilt adjusting means 8 and 9, the mounting table 3 with respect to the base 2 is in the arrow E direction and the arrow E, respectively.
The inclination can be corrected by an arbitrary amount in a direction orthogonal to the plane including the direction, and the inclination of the measured rotary object 11 mounted on the mounting table 3 can be inclined by an arbitrary amount in any direction. Can be corrected. FIG. 3 shows a configuration explanatory diagram (a block diagram relating to electrical equipment) of signals relating to each computing means of the roundness measuring machine 1. Each means shown in FIG. 3 is configured to operate via a system controller 25 having a data bus and a control memory (both not shown) when a measurer operates the operation panel 30 and the operation unit 33. There is.

3, the center position calculating means is mainly composed of a roundness detecting means 4, a system controller 25, a data memory 26, and a center position calculating section 27. When the roundness detecting means 4 detects the roundness of the rotating object to be measured 11 placed on the placing table 3, the center position calculating means once outputs the detection data via the system controller 25. The center position calculation unit 27 stores the data in the memory 26 and then processes the detected data retrieved from the data memory 26 to calculate the relative position of the center of the measured rotating object 11 with respect to the center of rotation of the rotating means 5. Further, the calculation result obtained by the center position calculating unit 27 is sent to the data memory 26 via the system controller 25 and stored therein. That is, the center position calculating means places the rotating object to be measured 11 on the mounting table 3 and rotates it (arrow A
Direction), the circularity detecting means 4 detects only a plurality of distances from the center of rotation to a point on the circumference of the rotating object 11 to be measured, and the sum of squares of the differences between the detected values is the minimum. The average position of the radius is calculated and the relative position of the center with respect to the center of rotation of the rotating means 5 is calculated.

3, the distance calculating means is a system controller 25, a data memory 26, and a distance calculating section 2
It is mainly composed of 8. The distance calculation means is a rotary object to be measured 1 with respect to the center of rotation of the rotation means 5, which is calculated by the center position calculation unit 27 and stored in the data memory 26.
The relative position of the center of 1 is called to the distance calculation unit 28 via the system controller 25, and the measured rotating object 11 when mounted on the mounting table 3 with respect to the center of rotation of the mounting table 3 Two distances in the moving direction of the moving means 6 and 7 at the center of are calculated and the calculation results are stored in the data memory 26. In other words, the center position calculating means with respect to the center of rotation of the rotating means 5 based on the calculation result of the center position calculating means when the rotating object to be measured 11 is placed on the placing table 3. Measured rotating object 11
The deviation of the center of each of the moving means 6 and 7 is calculated in the moving direction.

The display means 10 displays the calculation result of the distance calculation means when the distance calculation means finishes the calculation. That is, when the distance calculation means finishes the calculation, the system controller 25 performs the sequence control, so that the calculation result of the distance calculation means is temporarily stored in the data memory 26 via the system controller 25.
Further, the display means 10 is called and displayed. The display means 10 can also call and display the calculation result of the distance calculating means stored in the data memory 26 via the system controller 25 by operating the operation panel 30 according to the desire of the measurer. It is a thing. In addition to displaying the calculation result of the distance calculation means, the display means 10 includes the operation and setting items of the operation panel 30, the position of the detector 12 of the roundness detection means 4, and the holding means 13 and the elevating means 14. The moving distance, the detection result of the roundness detecting means 4, the calculation result of the tilt correction amount calculating means described later, and the like are also displayed.

3, the inclination amount calculating means mainly comprises a roundness detecting means 4, a holding means 13, an elevating means 14, a system controller 25, a data memory 26 and an inclination amount calculating section 31. ing. The inclination amount calculation means is
When the circularity detection means 4 detects circularity at different heights on the rotating object to be measured 11 mounted on the mounting table 3,
A plurality of detection data detected by the roundness detecting means 4 via the system controller 25 and data on the moving distance of the detector 12 based on the movement detection of the holding means 13 and the elevating means 14 are once stored in the data memory 26, After that, the inclination amount calculation unit 31 performs arithmetic processing on the detection data and the movement distance data called from the data memory 26, and the center line of the measured rotating object 11 relative to the rotation axis of the rotation unit 5. The amount of inclination is calculated, and the calculation result obtained by the inclination calculator 31 is sent to the data memory 26 via the system controller 25 for storage. That is,
The tilt amount calculating means is a plurality of relative positions of the center of the rotating object to be measured 11 with respect to the center of rotation of the rotating means 5 at different heights with respect to the rotating object to be measured 11 placed on the mounting table 3. Then, the amount of relative inclination of the center line of the object to be measured 11 with respect to the axis of rotation of the rotating means 5 is calculated based on the obtained result and the movement distance of the detector 12.

The tilt correction amount calculation means is mainly composed of a system controller 25, a data memory 26, and a tilt correction amount calculation section 32 in FIG. The tilt correction amount calculation means calculates the tilt of the center line of the measured rotating object 11 with respect to the axis of rotation of the rotation means 5, which is calculated by the tilt amount calculation unit 31 and stored in the data memory 26, in the system controller 25. Call the tilt correction amount calculation unit 32 via
The inclination of the center line of the rotating object to be measured 11 when mounted on the mounting table 3 with respect to the axis of rotation of the rotating means 5 is determined by two distances in the respective operating directions of the inclination adjusting means 8 and 9. Is calculated and the result is stored in the data memory 26. That is, the tilt correction amount calculation means is configured to rotate the rotation means 5 of the center line of the measured rotary object 11 when the measured rotary object 11 is placed on the mounting table 3. When the inclination with respect to the axis of motion is calculated, the inclination of the center line of the object to be measured 11 with respect to the axis of rotation of the rotating means 5 is calculated based on the calculation result.
And the respective distances (the amounts to be adjusted) in the tilt adjustment directions of 9 and 9. When the tilt correction amount calculation means finishes the calculation, the calculation result of the tilt correction amount calculation means is temporarily stored in the data memory 26 via the system controller 25 by the sequence control of the system controller 25, and is further called to the display means 10. Is displayed.

The display means 10 calls the calculation result of the tilt correction amount calculation means stored in the data memory 26 via the system controller 25 by operating the operation panel 30 at a desired time of the measurer. , Can also be displayed. The roundness measuring machine 1 is configured as described above. The operation of the roundness measuring machine 1 will be described below. 4 and 5 are flow charts showing the sequence of operations and operations of the roundness measuring machine 1. The measurer places the measured rotary object 11 on the mounting table 3 so that the center of the measured rotary object 11 is located substantially at the center of the mounting table 3. Then, the operation panel 30
By operating the first and second heights at which the detector 12 is to be positioned for leveling, and roundness, average roundness,
After setting the measurement conditions such as the distance (range) between the valley and the mountain of the rotating object 11 to be measured and confirming the setting contents on the display means 10, the operation panel 30 and the operation unit 33 are operated to perform an operation for leveling. To start.

By operating the operating portion 33, the inclination amount calculating means is first operated. That is, the holding means 13 and the elevating means 14 are activated, and the detector 12 comes into contact with the measured rotating object 11 at the first height set. At this time, the holding means 1
3 and the detection data for notifying the position of the detector 12 from the elevating means 14 are sent to the data memory 26 via the system controller 25.

Here, the rotating means 5 outputs and the rotary base 15 rotates in the direction of the arrow A, and therefore the mounting table 3 rotates, so that the rotating object 11 to be measured is rotated with respect to the detector 12. It rotates in the direction, and stops when it makes one rotation.
When the measured rotating object 11 rotates with respect to the detector 12, the detector 12 detects a plurality of data for obtaining the distance from the center of rotation to the circumference of the measured rotating object 11,
The data is sent to the data memory 26. When all the data from the detector 12 is taken into the data memory 26, the center position calculating means is operated by the system controller 25, and the rotating object 1 to be measured 1 with respect to the center of rotation of the rotating means 5.
The center position at the first height of 1 is calculated, and the calculation result is sent to the data memory 26.

When the center position calculating means finishes sending the calculation result to the data memory 26, the holding means 13 and the elevating means 14 are operated by the operation of the system controller 25, and the detector 12 is operated at the second height set. The rotating object to be measured 11 is brought into contact with it. At this time, detection data for notifying the position of the detector 12 is sent from the holding means 13 and the elevating means 14 to the data memory 26 via the system controller 25. Here, as in the case where the detector 12 is in contact with the rotating object to be measured 11 at the first height, the rotating means 5 outputs, the detector 12 detects, and the center position calculating means Each calculation is performed to calculate the center position of the measured rotating object 11 at the second height position of the detector 12 with respect to the center of rotation of the rotating means 5, and the calculation result is sent to the data memory 26.

When the center positions of the rotating object to be measured 11 at the first and second height positions are sent to the data memory 26,
By the operation of the system controller 25, the inclination amount calculation unit 31 retrieves and calculates the two center positions and the distance between the first height and the second height from the data memory 26 via the system controller 25, and calculates them. The inclination of the center line of the object to be measured 11 with respect to the axis of rotation of the moving means 5 is calculated, and the result is sent to the data memory 26. Next, when the tilt amount calculation unit 31 finishes sending the calculation result to the data memory 26,
The tilt correction amount calculation means operates. That is, by the operation of the system controller 25, the calculation result of the tilt amount calculation unit 31 is sent from the data memory 26 to the tilt correction amount calculation unit 32 via the system controller 25. The tilt correction amount calculation unit 32 calculates the distance of each operation relating to the tilt correction of the tilt adjusting means 8 and 9 based on the sent calculation result, and sends the calculation result to the data memory 26. When the tilt correction amount calculation unit 32 finishes sending the calculation result to the data memory 26, the system controller 25 sends the calculation result of the tilt correction amount calculation unit 32 stored in the data memory 26 to the display means 10.

Here, the display means 10 displays the calculation result of the inclination correction amount calculation means, that is, the two feed distances (operating distances) in the inclination adjusting directions of the inclination adjusting means 8 and 9. The measurer reads the two feed distances in the tilt adjusting directions of the tilt adjusting means 8 and 9 displayed on the display means 10, and operates the tilt adjusting means 8 and 9 by the respective values. The center line of the rotating object to be measured 11 is the rotating means 5.
It becomes parallel to the axis of rotation of and is placed on the placing table 3. In other words, leveling (leveling)
However, it is the end.

In this leveling operation, the calculation result of the tilt correction amount calculation means displayed on the display means 10 is larger than the amount by which the tilt adjustment means 8 and 9 can adjust the tilt of the mounting table 3 with respect to the rotation base 15. Is larger, the calculation result of the inclination correction amount calculation means displayed on the display means 10 is displayed so as to be smaller than the tilt adjustable amount (operable amount) of the tilt adjusting means 8 and 9. With reference to the calculation result of the tilt correction amount calculation means displayed on the means 10, the measured rotating object 11 with respect to the mounting table 3 is measured.
After changing the mounting condition (posture), restart the operation from the start.

Subsequently, when the measurer operates the operation section 33 for centering, the center position calculating means is operated. That is, the holding means 13 and the elevating / lowering 14 are activated, and the detector 12 is moved to the measured rotating object 1 at a preset height.
1 is in contact. At this time, at least the holding means 13
The detection data for notifying the position of the detector 12 from the above, that is, the position with respect to the center of rotation of the rotating means 5 is sent to the data memory 26 via the system controller 25.

Here, the rotation means 5 outputs the rotation base 15 in the direction of arrow A, and accordingly, the mounting table 3 rotates, so that the rotating object 11 to be measured is rotated with respect to the detector 12. It rotates in the direction, and stops when it makes one rotation.
When the measured rotating object 11 rotates with respect to the detector 12, the detector 12 detects a plurality of data for obtaining the distance from the center of rotation to the circumference of the measured rotating object 11,
The data is sent to the data memory 26. When all the data from the detector 12 is taken into the data memory 26, the center position calculation unit 2 is operated by the operation of the system controller 25.
Reference numeral 7 is a rotating object to be measured 1 with respect to the center of rotation of the rotating means 5.
The position of the center of 1 is calculated, and the calculation result is sent to the data memory 26.

When the center position calculating section 27 finishes sending the calculation result to the data memory 26, the distance calculating means operates.
That is, by the operation of the system controller 25, the calculation result of the center position calculation unit 27 is sent from the data memory 26 to the distance calculation unit 28 via the system controller 25. The distance calculator 28 calculates two feed distances in the moving (feeding) directions of the moving means 6 and 7 based on the sent calculation results, and sends the calculated results to the data memory 26. When the distance calculation unit 28 finishes sending the calculation result to the data memory 26, the system controller 25
The calculation result of the distance calculation unit 28 stored in the data memory 26 is sent to the display means 10.

Here, the display means 10 displays the calculation result of the distance calculation means, that is, each distance to move (feed) the mounting table 3 by operating the moving means 6 and 7. The measurer reads the two feed distances to be operated by the moving means 6 and 7 displayed on the display means 10 and operates the moving means 6 and 7 by the respective values. The center of rotation of the measured rotating object 11 coincides with the center of rotation of the rotating means 5, and is placed on the mounting table 3. That is, centering (centering) is completed.

In this centering operation, the distance calculating means displayed on the display means 10 is larger than the amount (operable amount) by which the mounting table 3 can be moved with respect to the rotary base 15 by the moving means 6 and 7. When the calculated result is larger, the distance displayed on the display unit 10 is such that the calculated result of the distance calculation unit displayed on the display unit 10 is smaller than the operable amount of the moving units 6 and 7. Referring to the calculation result of the calculating means, the position of the rotating table 5 to be measured is adjusted in the direction toward the center of the rotating means 5 with respect to the mounting table 3, and then the operations after the end of the leveling are performed again. Start over.

Here, the roundness measuring machine 1 measures the roundness, the average roundness, the range, etc. of the rotating object 11 to be measured. That is, the holding means 13 and the elevating means 14 operate, and the detector 12 comes into contact with the measured rotating object 11 at a preset arbitrary height. At this time, at least the detection data for notifying the position of the detector 12, that is, the position of the rotating unit 5 with respect to the center of rotation, is sent from the holding unit 13 to the data memory 26 via the system controller 25. The rotation means 5 outputs and the rotation base 15 rotates in the direction of arrow A, and the rotating object to be measured 11 rotates in the same direction with respect to the detector 12, and when it makes one rotation, the rotation stops. Roundness detection means 4
Continuously detects data on the circularity from the rotating object to be measured 11 and sends the data to the data memory 26. The center position calculating means receives the data relating to the roundness of the object to be measured 11 from the data memory 26, performs a desired calculation, and outputs the calculation result (roundness, average roundness, range, etc.) as data. Send to memory 26. Then, the result of the calculation is called and displayed on the display means 10 by the operation of the system controller 25. The measurer can print the result if desired.

In the roundness measuring machine 1, the leveling for making the center line of the object to be measured 11 parallel or coincident with the axis of rotation of the rotating means 5 is performed as described above. That is, the tilt amount calculating means obtains the tilt of the center line of the measured rotating object 11 when it is mounted on the mounting table 3 with respect to the axis of rotation of the rotating means 5, and further the measured rotating object 11 is measured. For making the center line of the parallel or parallel to the axis of rotation of the rotating means 5,
When the tilt correction amount calculation means calculates the amount to which the tilt adjustment means 8 and 9 should be operated, that is, the tilt correction amount, the display means 10 should operate the tilt adjustment means 8 and 9 which is the calculation result of the tilt correction amount calculation means. Display quantity. The measurer is the display means 1
When the tilt adjusting means 8 and 9 are respectively operated based on the calculation result of the tilt correction amount calculating means displayed at 0,
The rotational object to be measured 11 has a center line parallel or aligned with the axis of rotation of the rotating means 5. Therefore, in the roundness measuring machine 1, since the amount of inclination of the rotating object to be measured 11 with respect to the rotating means 5, that is, the amount to be operated by the adjusting means 8 and 9 is displayed on the display means 10, trial and error. It is not necessary to perform the tilt adjustment operation, and the leveling operation can be simplified simply by operating the tilt adjustment means 8 and 9 based on the display of the display means 10.

In the roundness measuring machine 1, the distance calculating means places the rotating object to be measured 11 on the placing table 3 and rotates it with respect to the roundness detecting means 4, thereby detecting the roundness detecting means. A plurality of distances from the center of rotation to a point on the circumference of the rotating object to be measured are detected by 4, and the average circle of the radii at which the sum of the squares of the differences from the detected values is minimized is obtained. The center is obtained and two distances in the moving direction of the moving means 6 and 7 are calculated with respect to the relative position of the center of the average circle with respect to the center of rotation of the rotating means 5. In the case where the measured portion of 11 is continuous and does not have a partially arcuate shape, the distance from the center of rotation to a point on the circumference of the measured rotating object 11 is continuously detected, Obtain the center of the average circle of the radius that minimizes the sum of the squares of the differences between the detected values, and obtain its center, A configuration for calculating the two distances related to the moving direction of the moving means 6 and 7 for the relative position of the center of the average circle relative to the center of rotation of the moving means 5 may be.

Further, the roundness measuring machine 1 is based on the property of a circle that the points having the same distances from the three points are the centers of the circles including the three points on the circumference. The coordinates of the three or more points taken from the circumference are obtained, the centers of the three points obtained are obtained, and the higher accuracy of the measured rotating object 11 is obtained from the plurality of centers obtained here. Even if the configuration is such that the center is obtained and two distances in the moving direction of the moving means 6 and 7 with respect to the relative position of this highly accurate center with respect to the center of rotation of the rotating means 5 are calculated, Is obtained.

[0037]

According to the present invention, there is provided an inclination adjusting means for adjusting the inclination of the mounting table with respect to the axis of rotation of rotation, and the center line of the rotating object to be measured placed on the mounting table. When the inclination with respect to the axis of rotation of the rotating means is obtained, the amount by which the inclination adjusting means should be actuated so that the center line of the rotating object to be measured is parallel or coincident with the axis of rotation of the rotating means. Since the inclination correction amount calculation means calculates and the calculation result is displayed by the display means, the center line of the rotating object to be measured placed on the mounting table is rotated by the rotation means. In leveling parallel to or coincident with the axis line of, the leveling state can be obtained only by operating the tilt calculating means based on the calculation result of the tilt correction amount calculating means displayed on the display means, and the leveling operation is simple and easy. It is a degree measuring instrument.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line I-I in FIG.

FIG. 3 is a block diagram relating to the electrical equipment of the embodiment shown in FIG.

4 is a flowchart showing the sequence of operations and operations of the embodiment shown in FIG.

[Explanation of symbols]

 1 Roundness Measuring Machine 2 Base 3 Mounting Table 4 Roundness Detection Means 5 Rotating Means 6, 7 Moving Means 8, 9 Tilt Adjusting Means 10 Display Means 11 Measured Rotating Objects 13 Holding Means 14 Lifting Means 15 Rotation base 16 Plate member 17,21 Micrometer head 18 Shaft part 19,22 Intermediate member 20 Spring 23 Partial spherical surface part 24 Step part 25 System controller 26 Data memory 27 Center position calculation part (center position calculation means) 28 Distance calculation part ( Distance calculation means) 31 Tilt amount calculation section (tilt amount calculation means) 32 Tilt correction amount calculation section (tilt correction amount calculation means)

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[Procedure amendment]

[Submission date] November 27, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Added

[Correction content]

[0037]

According to the present invention, there is provided an inclination adjusting means for adjusting the inclination of the mounting table with respect to the axis of rotation of rotation, and the center line of the rotating object to be measured placed on the mounting table. When the inclination with respect to the axis of rotation of the rotating means is obtained, the amount by which the inclination adjusting means should be actuated so that the center line of the rotating object to be measured is parallel or coincident with the axis of rotation of the rotating means. Since the inclination correction amount calculation means calculates and the calculation result is displayed by the display means, the center line of the rotating object to be measured placed on the mounting table is rotated by the rotation means. In leveling parallel to or coincident with the axis line of, the leveling state can be obtained only by operating the tilt calculating means based on the calculation result of the tilt correction amount calculating means displayed on the display means, and the leveling operation is simple and easy. It is a degree measuring instrument.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line I-I in FIG.

FIG. 3 is a block diagram relating to the electrical equipment of the embodiment shown in FIG.

[Fig. 4]

5 is a flowchart showing the sequence of operations and operations of the embodiment shown in FIG.

[Explanation of symbols] 1 roundness measuring machine 2 base 3 mounting table 4 roundness detecting means 5 rotating means 6, 7 moving means 8, 9 tilt adjusting means 10 display means 11 rotating object to be measured 13 holding Means 14 Elevating means 15 Rotation base 16 Plate member 17,21 Micrometer head 18 Shaft part 19,22 Intermediate member 20 Spring 23 Partial spherical surface part 24 Step part 25 System controller 26 Data memory 27 Center position calculation part (center position calculation means) 28 Distance Calculator (Distance Calculator) 31 Tilt Amount Calculator (Tilt Calculator) 32 Tilt Correction Amount Calculator (Tilt Correction Amount Calculator)

Claims (1)

[Claims] 1. A mounting table on which a rotating object to be measured is mounted, roundness detecting means for detecting the roundness of the rotating object to be measured, and the circularity detecting means and the mounting table are relative to each other. Of the mounting table for rotating the mounting table relative to the rotating means in different directions with respect to the rotating means for rotating the rotating means and the plane orthogonal to the axis of rotation of the rotating means. First and second tilt adjusting means are provided, and in addition, the tilt of the center line of the rotating object to be measured when mounted on the mounting table with respect to the axis of rotation of the rotating means is obtained. And a correction amount calculation means for calculating the inclination thereof into an amount relating to the operation of each of the first and second inclination adjustment means, and the first and second inclination adjustment means calculated by the inclination correction amount calculation means. Roundness provided with display means for displaying the quantity related to each operation Measuring machine.