Position precision measuring device and method for grinding machine tool rest rotating shaft

Abstract

The present application belongs to the field of mechanical processing, and relates to a gear grinding machine tool rest rotating shaft position precision measuring device and method, which is used for measuring and correcting the consistency of the rotating center and the grinding center of a tool rest assembly, the tool rest assembly comprising an electric spindle, a grinding wheel assembly and a small holder assembly, further comprising a Y-axis grinding center positioning shaft installed between the electric spindle and the small holder assembly after replacing the grinding wheel assembly, a laser interferometer assembly installed on the Y-axis grinding center positioning shaft through fasteners, and a torsion spring table for correction; the positioning shaft comprises a first positioning hole and a positioning groove arranged at a middle position, the positioning hole is provided with a gas removal groove and a plurality of screw holes, and the two ends are respectively provided with a small holder interface and an electric spindle interface. The present application ensures the consistency of the rotating center and the grinding center of the tool rest through the movement of the tool rest Y-axis, the rotation of the B-axis and the rotation of the A-axis, and performs measurement and correction, so as to ensure the various precision requirements of the processed gear of the gear grinding machine.

Description

Technical Field

[0001] This invention belongs to the field of machining and relates to a device and method for measuring the positional accuracy of the rotating shaft of a gear grinding machine tool holder. Background Technology

[0002] During gear grinding, the tool holder rotates at a certain angle, and a single machine should be capable of processing multiple types of gears. To ensure the various precision requirements of the gears after grinding, the center of the tool holder's rotation axis (A-axis) must be aligned with the grinding center of the tool holder's grinding wheel axis (B-axis) to further ensure that the grinding requirements are met within the rotational stroke range (-45° + 45°).

[0003] To ensure the gears meet the required precision after grinding, the center of the tool holder's rotation axis (A-axis) must be aligned with the grinding center of the tool holder's grinding wheel axis (B-axis). During the grinding of helical teeth, the tool holder rotates at a certain angle. If the center of the A-axis coincides with the center of the tool holder's B-axis, the actual rotation angle of the tool holder will match the theoretically programmed rotation angle. If there is any eccentricity, the rotation angle will deviate, thus affecting the grinding process. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a device and method for measuring the position accuracy of the rotating axis of a gear grinding machine tool holder, which ensures that the rotation center of the tool holder is consistent with the grinding center by moving the tool holder along the Y-axis, rotating the tool holder along the B-axis, and rotating the tool holder along the A-axis, and performs measurement and correction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gear grinding machine tool holder rotation axis position accuracy measuring device, used to measure and correct the rotation center of the tool holder assembly to ensure consistency with the grinding center. The tool holder assembly includes an electric spindle, a grinding wheel assembly, and a small support assembly. It also includes a Y-axis grinding center positioning shaft installed between the electric spindle and the small support assembly after replacing the grinding wheel assembly. A laser interferometer assembly is installed on the Y-axis grinding center positioning shaft by fasteners, and a torsion spring gauge for calibration. The positioning shaft includes a first positioning hole and a positioning groove located in the middle. The positioning hole is provided with a degassing groove and several screw holes, and the two ends are respectively provided with a small support interface and an electric spindle interface.

[0006] Optionally, the laser interferometer assembly is mounted on the positioning axis via an adapter plate.

[0007] Optionally, the adapter plate is provided with several oblong holes and connecting screw holes for installation and fixing. One side of the adapter plate is provided with a positioning strip surface and a second positioning end surface for positioning with the positioning groove of the positioning shaft, and the other side is provided with a second positioning hole for positioning and connecting with the laser interferometer assembly.

[0008] Optionally, the fastener is a J21-9A|M10×25 socket head cap screw.

[0009] Optionally, both the small support interface and the electric spindle interface are respectively provided with a positioning end face, a positioning cone surface, a correction band and a locking chuck tightening port.

[0010] A method for measuring the positional accuracy of the rotating shaft of a gear grinding machine tool holder, using the aforementioned gear grinding machine tool holder rotational shaft positional accuracy measuring device, includes the following steps:

[0011] S1, move the tool holder assembly along the Y-axis to ensure that the grinding center of the grinding wheel is at the zero point of the Y-axis, and rotate the A-axis to ensure that the tool holder assembly is in a horizontal position, that is, the A-axis is at the zero-degree position;

[0012] S2, disassemble the grinding wheel assembly and replace the positioning shaft; insert the electric spindle interface of the positioning shaft into the tapered hole interface of the electric spindle, use an Allen wrench to tighten the chuck through the locking chuck tightening port, pull the positioning end face of the positioning shaft to be pressed against the positioning end face of the electric spindle, and lock it;

[0013] S3, point the pointer of the torsion spring meter to the front and side of the positioning shaft calibration band respectively, rotate the B axis continuously and smoothly, and observe the jump of the positioning shaft calibration band;

[0014] Note: Both frontal and lateral movements must be detected simultaneously, and the maximum value is recorded for the fluctuation.

[0015] S4, push the small bracket and insert the small bracket interface of the positioning shaft into the tapered hole of the small bracket. Use an Allen wrench to tighten the locking chuck through the tightening port. Pull the positioning end face of the positioning shaft to fit tightly against the positioning end face of the small bracket and lock it in place.

[0016] S5, point the torsion spring indicator to the front and side of the positioning shaft correction band respectively, rotate axis B continuously and smoothly, and observe the jump of the positioning shaft correction band;

[0017] Note: Both frontal and lateral movements must be detected simultaneously, and the maximum value is recorded for the fluctuation.

[0018] S6, rotate the B-axis so that the positioning groove of the positioning axis faces the outside, point the pointer of the torsion spring indicator to the center of the positioning groove, move the tool post up and down, and observe the reading of the torsion spring indicator; adjust the position of the positioning axis by rotating the B-axis according to the reading of the torsion spring indicator, and ensure that the upper and lower ends of the positioning axis are zero-zero.

[0019] S7, the torsion spring indicator pointer points to the positioning groove of the positioning axis, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the positioning hole; if there is a deviation in the Y-axis direction, the Y-axis can be moved to compensate, and the torsion spring indicator can be used again to measure the runout of the positioning hole of the positioning axis; after completion, this Y-axis position is used as the zero point position of the tool holder Y-axis;

[0020] Note: If the torsion spring gauge reading meets the process requirements, proceed to step S8; if the runout of the tool post in the Z-axis direction after Y-axis compensation still fails to meet the process requirements, an adapter plate needs to be installed, and the process should proceed directly to step S12.

[0021] S8, assemble the outer circle of the laser interferometer with the first positioning hole of the positioning shaft, and tighten the internal hexagonal head screw;

[0022] S9, with the torsion spring indicator pointer pointing to the outer circle of the laser interferometer positioning, rotate axis A, observe the torsion spring indicator reading, and recheck the runout of the outer circle positioning;

[0023] S10. Use a laser interferometer to measure the position accuracy of the A-axis according to the A-axis position accuracy measurement specification.

[0024] S11, Compensate for the positioning accuracy of the A-axis based on the measurement data of the laser interferometer;

[0025] Note: If the runout meets the process requirements after Y-axis compensation in step 7, then step 12 and subsequent steps are unnecessary.

[0026] S12, insert the positioning strip of the adapter plate into the positioning groove of the positioning shaft so that the second positioning end face contacts the first positioning end face, and install 4 hexagon socket head cap screws into the waist-shaped hole, but do not tighten them yet;

[0027] S13, the torsion spring indicator pointer points to the second positioning hole of the adapter plate, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the positioning hole; according to the torsion spring indicator reading, fine-tune the adapter plate, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the second positioning hole. After the process requirements are met, tighten the internal hexagon socket head cap screws.

[0028] S14, assemble the positioning outer circle of the laser interferometer with the second positioning hole of the adapter plate, and tighten the four internal hexagonal head screws set in the connecting screw holes;

[0029] S15, with the torsion spring indicator pointer pointing to the outer circle of the laser interferometer positioning, rotate axis A, observe the torsion spring indicator reading, and recheck the runout of the positioning outer circle;

[0030] S16. Use a laser interferometer to measure the position accuracy of the A-axis according to the A-axis position accuracy measurement specification.

[0031] S17, Compensate for the positioning accuracy of the A-axis based on the measurement data of the laser interferometer;

[0032] Note: The fine adjustment amount of the adapter plate is the difference between the center of the tool holder B axis and the center of the tool holder A axis. The position of the electric spindle needs to be adjusted through the electric spindle positioning strip, and steps S1 to S17 need to be repeated for verification.

[0033] Optionally, the tool holder assembly rotates, that is, the entire tool holder of the gear grinding machine rotates clockwise and counterclockwise in the vertical plane, which is the A-axis rotation; the grinding wheel spindle rotates, the electric spindle drives the grinding wheel assembly to rotate, which is the B-axis rotation; the grinding wheel assembly tangential feeds, the entire tool holder of the gear grinding machine moves horizontally along the grinding wheel axis, which is the Y-axis feed.

[0034] The beneficial effects of this invention are as follows: by moving the tool holder along the Y-axis, rotating along the B-axis, and rotating along the A-axis, this invention ensures that the rotation center of the tool holder is consistent with the grinding center and performs measurement and correction, thereby ensuring the various accuracy requirements of the gear after the gear grinding machine.

[0035] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0037] Figure 1 This is a schematic diagram of the tool holder assembly of the present invention;

[0038] Figure 2 This is a schematic diagram of the positioning shaft of the present invention;

[0039] Figure 3 This is a schematic diagram of the adapter plate of the present invention;

[0040] Figure 4 This is a schematic diagram of the installation of the positioning axis of the present invention with the laser interferometer without an adapter plate;

[0041] Figure 5 This is a schematic diagram showing the installation of the positioning axis of the present invention with the laser interferometer including the adapter plate;

[0042] Figure 6 This is a schematic diagram of the operation of the present invention without the adapter plate;

[0043] Figure 7 This is a schematic diagram of the operation of the present invention, including the adapter plate.

[0044] Reference numerals: Tool holder assembly 1, electric spindle 101, grinding wheel assembly 102, small support assembly 103, positioning shaft 2, positioning groove 201, first positioning hole 202, degassing groove 203, screw hole 204, small support interface 205, electric spindle interface 206, correction belt 207, positioning cone surface 208, first positioning end face 209, locking chuck tightening port 210, adapter plate 3, positioning strip surface 301, second positioning end face 302, oblong hole 303, second positioning hole 304, connecting screw hole 305, laser interferometer 4, internal hexagonal head screw 5. Detailed Implementation

[0045] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0047] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0048] Please see Figures 1 to 7This is a device for measuring the positional accuracy of the rotating axis of a gear grinding machine tool holder. It is used to measure and correct the alignment of the rotation center of the tool holder assembly 1 with the grinding center. The tool holder assembly 1 includes an electric spindle 101, a grinding wheel assembly 102, and a small support assembly 103. It also includes a Y-axis grinding center positioning shaft 2 installed between the electric spindle 101 and the small support assembly 103 after replacing the grinding wheel assembly 102. A laser interferometer 4 assembly is installed on the Y-axis grinding center positioning shaft 2 with fasteners, and a torsion spring gauge for calibration. The positioning shaft 2 includes a first positioning hole 202 and a positioning groove 201 located in the middle. The positioning hole is provided with a degassing groove 203 and several screw holes 204. Small supports are respectively provided at both ends. Interface 205 is connected to the electric spindle 101. The laser interferometer 4 component is mounted on the positioning shaft 2 via adapter plate 3. The adapter plate 3 is provided with several oblong holes 303 and connecting screw holes 305 for mounting and fixing. One side of the adapter plate 3 is provided with a positioning strip surface 301 and a second positioning end face 302 for positioning with the positioning groove 201 of the positioning shaft 2. The other side is provided with a second positioning hole 304 for positioning and connecting with the laser interferometer 4 component. The fastener is a J21-9A|M10×25 internal hexagonal head screw 5. The small support interface 205 and the electric spindle 101 interface are respectively provided with a positioning end face, a positioning cone surface 208, a correction band 207 and a locking chuck tightening port 210.

[0049] A method for measuring the positional accuracy of the rotating shaft of a gear grinding machine tool holder, using the aforementioned gear grinding machine tool holder rotational shaft positional accuracy measuring device, includes the following steps:

[0050] S1, move the tool holder assembly 1 along the Y-axis to ensure that the grinding center of the grinding wheel is at the zero point of the Y-axis, and rotate the A-axis to ensure that the tool holder assembly 1 is in a horizontal position, that is, the A-axis is at the zero-degree position;

[0051] S2, disassemble the grinding wheel assembly 102 and replace and install the positioning shaft 2; insert the electric spindle 101 interface of the positioning shaft 2 into the tapered hole interface of the electric spindle 101, use an Allen wrench to tighten the chuck through the locking chuck tightening port 210, pull the first positioning end face 209 of the positioning shaft 2 to be pressed against the positioning end face of the electric spindle 101 and lock it;

[0052] S3, point the pointer of the torsion spring meter to the front and side of the positioning shaft 2 calibration band 207 respectively, rotate the B axis continuously and smoothly, and observe the jump of the positioning shaft 2 calibration band 207;

[0053] Note: Both frontal and lateral movements must be detected simultaneously, and the maximum value is recorded for the fluctuation.

[0054] S4, push the small support and insert the small support interface 205 of the positioning shaft 2 into the tapered hole of the small support. Use an Allen wrench to tighten the chuck through the tightening port 210. Pull the first positioning end face 209 of the positioning shaft 2 to stick to the positioning end face of the small support and lock it.

[0055] S5, point the pointer of the torsion spring gauge to the front and side of the positioning shaft 2 calibration band 207 respectively, rotate the B axis continuously and smoothly, and observe the jump of the positioning shaft 2 calibration band 207;

[0056] Note: Both frontal and lateral movements must be detected simultaneously, and the maximum value is recorded for the fluctuation.

[0057] S6, rotate the B-axis so that the positioning groove 201 of the positioning shaft 2 faces the outside, point the pointer of the torsion spring meter to the middle of the positioning groove 201, move the tool post up and down, and observe the reading of the torsion spring meter; adjust the position of the positioning shaft 2 by rotating the B-axis according to the reading of the torsion spring meter, and ensure that the upper and lower ends of the positioning shaft 2 are zero to zero.

[0058] S7, the torsion spring indicator pointer points to the positioning groove 201 of positioning shaft 2, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the positioning hole; if there is a deviation in the Y-axis direction, the Y-axis can be moved to compensate, and the torsion spring indicator can be used again to measure the runout of the positioning hole of positioning shaft 2; after completion, this Y-axis position is used as the zero point position of the tool holder Y-axis;

[0059] Note: If the torsion spring gauge reading meets the process requirements, proceed to step S8; if the runout of the tool post in the Z-axis direction after Y-axis compensation still fails to meet the process requirements, then adapter plate 3 needs to be installed and the process should proceed directly to step S12.

[0060] S8, assemble the outer circle of the laser interferometer 4 with the first positioning hole 202 of the positioning shaft 2, and tighten the internal hexagonal head screw 5;

[0061] S9, with the torsion spring indicator pointer pointing to the outer circle of the laser interferometer 4 positioning, rotate axis A, observe the torsion spring indicator reading, and recheck the runout of the positioning outer circle;

[0062] S10, Use laser interferometer 4 to measure the position accuracy of the A-axis according to the A-axis position accuracy measurement specification;

[0063] S11, Compensate for the positioning accuracy of the A-axis based on the measurement data of the laser interferometer 4;

[0064] Note: If the runout meets the process requirements after Y-axis compensation in step 7, then step 12 and subsequent steps are unnecessary.

[0065] S12, the positioning strip surface 301 of the adapter plate 3 is inserted into the positioning groove 201 of the positioning shaft 2, so that the second positioning end face 302 contacts the first positioning end face 209, and four hexagon socket head cap screws 5 are installed into the waist-shaped hole 303, but not tightened yet.

[0066] S13, the torsion spring indicator pointer points to the second positioning hole 304 of the adapter plate 3, and rotate the A axis to observe the torsion spring indicator reading to determine the positioning hole runout; according to the torsion spring indicator reading, fine-tune the adapter plate 3, and rotate the A axis to observe the torsion spring indicator reading to determine the second positioning hole 304 runout. After meeting the process requirements, tighten the internal hexagon socket head cap screw 5.

[0067] S14, assemble the positioning outer circle of the laser interferometer 4 with the second positioning hole 304 of the adapter plate 3, and tighten the four internal hexagonal head screws 5 set in the connecting screw hole 305;

[0068] S15, the torsion spring indicator pointer points to the outer circle of the laser interferometer 4 positioning, rotate axis A, observe the torsion spring indicator reading, and recheck the runout of the positioning outer circle;

[0069] S16. Using laser interferometer 4, measure the position accuracy of the A-axis according to the A-axis position accuracy measurement specification.

[0070] S17, Compensate for the positioning accuracy of the A-axis based on the measurement data of the laser interferometer 4;

[0071] Note: The fine adjustment amount of the adapter plate 3 is the difference between the center of the tool holder B axis and the center of the tool holder A axis. The position of the electric spindle 101 needs to be adjusted by the positioning strip 301 of the electric spindle 101, and the steps S1 to S17 are repeated for verification.

[0072] In this embodiment, after the deviation value is measured and corrected, it is recorded. After the machine tool is powered on, the corresponding compensation can be performed by the program to compensate it to coincide with the target value through software.

[0073] In this embodiment, the tool holder assembly 1 rotates, that is, the entire tool holder of the gear grinding machine rotates clockwise and counterclockwise in the vertical plane, which is the A-axis rotation; the grinding wheel spindle rotates, and the electric spindle 101 drives the grinding wheel assembly 102 to rotate, which is the B-axis rotation; the grinding wheel assembly 102 moves tangentially, and the entire tool holder of the gear grinding machine moves horizontally along the grinding wheel axis, which is the Y-axis feed.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for measuring the positional accuracy of the rotating shaft of a gear grinding machine tool holder, based on a device for measuring the positional accuracy of the rotating shaft of a gear grinding machine tool holder, characterized in that... The gear grinding machine tool holder rotation axis position accuracy measuring device is used to measure and correct the rotation center of the tool holder assembly to keep it consistent with the grinding center. The tool holder assembly includes an electric spindle, a grinding wheel assembly and a small support assembly, and also includes a positioning shaft installed on the Y-axis grinding center between the electric spindle and the small support assembly after replacing the grinding wheel assembly, a laser interferometer installed on the positioning shaft by fasteners, and a torsion spring gauge for correction. The positioning shaft includes a first positioning hole and a positioning groove located in the middle. The first positioning hole is provided with a degassing groove and several screw holes. The two ends are respectively provided with a small support interface and an electric spindle interface. The laser interferometer is mounted on the positioning shaft via an adapter plate. The adapter plate is provided with several oblong holes and connecting screw holes for mounting and fixing. One side of the adapter plate is provided with a positioning strip surface and a second positioning end surface for positioning with the positioning groove of the positioning shaft, and the other side is provided with a second positioning hole for positioning and connecting with the laser interferometer. The measurement process includes the following steps: S1, move the tool holder assembly along the Y-axis to ensure that the grinding center of the grinding wheel is at the zero point of the Y-axis, and rotate the A-axis to ensure that the tool holder assembly is in a horizontal position, that is, the A-axis is at the zero-degree position; S2, disassemble the grinding wheel assembly and replace the positioning shaft; insert the electric spindle interface of the positioning shaft into the tapered hole interface of the electric spindle, use an Allen wrench to tighten the chuck through the locking chuck tightening port, pull the positioning end face of the positioning shaft to be pressed against the positioning end face of the electric spindle, and lock it; S3, point the pointer of the torsion spring meter to the front and side of the positioning shaft calibration band respectively, rotate the B axis continuously and smoothly, and observe the jump of the positioning shaft calibration band; Among them: both forward and lateral movements need to be detected simultaneously, and the maximum value is recorded for the fluctuation. S4, push the small bracket and insert the small bracket interface of the positioning shaft into the tapered hole of the small bracket. Use an Allen wrench to tighten the locking chuck through the tightening port. Pull the positioning end face of the positioning shaft to fit tightly against the positioning end face of the small bracket and lock it in place. S5, point the torsion spring indicator to the front and side of the positioning shaft correction band respectively, rotate axis B continuously and smoothly, and observe the jump of the positioning shaft correction band; Among them: both forward and lateral movements need to be detected simultaneously, and the maximum value is recorded for the fluctuation. S6, rotate the B-axis so that the positioning groove of the positioning axis faces the outside, point the pointer of the torsion spring indicator to the center of the positioning groove, move the tool post up and down, and observe the reading of the torsion spring indicator; adjust the position of the positioning axis by rotating the B-axis according to the reading of the torsion spring indicator, and ensure that the upper and lower ends of the positioning axis are zero-zero. S7, the torsion spring indicator pointer points to the positioning groove of the positioning axis, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the first positioning hole; if there is a deviation in the Y-axis direction, the Y-axis can be moved to compensate, and the torsion spring indicator can be used again to measure the runout of the first positioning hole of the positioning axis; after completion, this Y-axis position is used as the zero point position of the tool holder Y-axis; If the torsion spring gauge reading meets the process requirements, proceed to step S8; if the runout of the tool post in the Z-axis direction after Y-axis compensation still fails to meet the process requirements, an adapter plate needs to be installed, and the process should proceed directly to step S12. S8, assemble the outer circle of the laser interferometer with the first positioning hole of the positioning shaft, and tighten the internal hexagonal head screw; S9, with the torsion spring indicator pointer pointing to the outer circle of the laser interferometer positioning, rotate axis A, observe the torsion spring indicator reading, and recheck the runout of the outer circle positioning; S10. Use a laser interferometer to measure the position accuracy of the A-axis according to the A-axis position accuracy measurement specification. S11, Compensate for the positioning accuracy of the A-axis based on the measurement data of the laser interferometer; If the runout meets the process requirements after Y-axis compensation in step 7, then step 12 and subsequent steps are unnecessary. S12, insert the positioning strip of the adapter plate into the positioning groove of the positioning shaft so that the second positioning end face contacts the positioning end face of the positioning shaft, and install 4 hexagon socket head cap screws into the waist-shaped hole, but do not tighten them yet. S13, the torsion spring indicator pointer points to the second positioning hole of the adapter plate, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the second positioning hole; according to the torsion spring indicator reading, fine-tune the adapter plate, and rotate the A axis to observe the torsion spring indicator reading to determine the runout of the second positioning hole. After the process requirements are met, tighten the internal hexagon socket head cap screws. S14, assemble the positioning outer circle of the laser interferometer with the second positioning hole of the adapter plate, and tighten the four internal hexagonal head screws set in the connecting screw holes; S15, with the torsion spring indicator pointer pointing to the outer circle of the laser interferometer positioning, rotate axis A, observe the torsion spring indicator reading, and recheck the runout of the positioning outer circle; S16. Use a laser interferometer to measure the position accuracy of the A-axis according to the A-axis position accuracy measurement specification. S17, Compensate for the positioning accuracy of the A-axis based on the measurement data of the laser interferometer; Among them: the fine adjustment amount of the adapter plate is the difference between the center of the tool holder B axis and the center of the tool holder A axis. The position of the electric spindle needs to be adjusted by the electric spindle positioning strip, and steps S1~S17 are repeated for verification.

2. The method for measuring the position accuracy of the rotating shaft of a gear grinding machine tool holder according to claim 1, characterized in that: The rotation of the tool holder assembly, that is, the overall rotation of the tool holder of the gear grinding machine in the vertical plane clockwise and counterclockwise, is the A-axis rotation; the rotation of the grinding wheel spindle, the electric spindle drives the grinding wheel assembly to rotate, is the B-axis rotation; the tangential feed motion of the grinding wheel assembly, the horizontal movement of the entire tool holder of the gear grinding machine along the grinding wheel axis, is the Y-axis feed.

3. The method for measuring the position accuracy of the rotating shaft of a gear grinding machine tool holder according to claim 1, characterized in that: The fasteners are J21-9A|M10×25 socket head cap screws.

4. The method for measuring the position accuracy of the rotating shaft of a gear grinding machine tool holder according to claim 1, characterized in that: Both the small support interface and the electric spindle interface are respectively equipped with a positioning end face, a positioning cone surface, a correction band, and a locking chuck tightening port.

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