CN112496864A

CN112496864A - Micro-adjustment platform for verifying machine tool precision

Info

Publication number: CN112496864A
Application number: CN202011279150.2A
Authority: CN
Inventors: 陈国华; 李毅; 赵殿章; 童光庆
Original assignee: XY-HUST ADVANCED MANUFACTURING ENGINEERING RESEARCH INSTITUTE; Hubei University of Arts and Science
Current assignee: XY-HUST ADVANCED MANUFACTURING ENGINEERING RESEARCH INSTITUTE; Hubei University of Arts and Science
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-03-16
Anticipated expiration: 2040-11-16
Also published as: CN112496864B

Abstract

The invention relates to the field of precision adjustment, in particular to a micro-adjustment platform for verifying the precision of a machine tool. The invention provides a fine adjustment platform which can be finely adjusted and can observe the adjustment condition in real time to verify the precision of a machine tool. A micro-adjustment platform for verifying the precision of a machine tool comprises a machine cabinet, an X moving shaft mechanism, a Y moving shaft mechanism, a Z moving shaft mechanism and the like; an X moving shaft mechanism is arranged on the machine cabinet, a Y moving shaft mechanism is arranged in the middle of the machine cabinet, and a Z moving shaft mechanism is arranged on the rear side of the machine cabinet. Compared with the prior art, the invention has the beneficial effects that: the position of the machine tool, which needs to be adjusted, is determined through the moving positions of the first micrometer and the second micrometer by arranging the horizontal fine adjustment mechanism and the pitching fine adjustment mechanism, so that the precision of the machine tool can be adjusted more accurately.

Description

Micro-adjustment platform for verifying machine tool precision

Technical Field

The invention relates to the field of precision adjustment, in particular to a micro-adjustment platform for verifying the precision of a machine tool.

Background

The machine tool is a machine for manufacturing and machining parts, most parts have higher requirements on precision, so the precision of the machine tool is also very important, but the machine tool can be worn to a certain extent in the continuous cutting process, so that the machining of the parts has certain deviation, the parts are difficult to find by naked eyes due to small numerical values, but the parts are scrapped due to slight numerical value deviation of some parts, meanwhile, in the adjusting process, a worker cannot visually observe the precision change of the machine tool, only can wait for the operation observation after the adjustment is finished, the process is complex, the efficiency is low, and the repeated operation is needed.

Therefore, it is highly desirable to provide a fine adjustment platform for verifying the accuracy of a machine tool, which can be finely adjusted and can observe the adjustment status in real time.

Disclosure of Invention

In order to overcome the defects of troublesome micro-distance adjustment and complex adjustment process in the prior art, the invention has the technical problems that: provided is a fine adjustment platform for verifying the accuracy of a machine tool, which can be finely adjusted and can observe the adjustment state in real time.

The technical implementation scheme of the invention is as follows: the utility model provides a verify fine adjustment platform of lathe precision, includes rack, X removes axle mechanism, Y removes axle mechanism and Z removes axle mechanism, is equipped with X on the rack and removes axle mechanism, and the middle part is equipped with Y and removes axle mechanism on the rack, is equipped with Z on the rack and removes axle mechanism.

Further, the X-shaped moving shaft mechanism comprises an I-shaped guide rail, an I-shaped slide rail, a first bearing table, a first motor and a first nut pair, the rack comprises a first lead screw, a first sliding table, a first guide rail, a first rack and a gear, wherein I-shaped guide rails are arranged on the left side and the right side of the rack, the I-shaped guide rails are slidably provided with the I-shaped slide rails, a first bearing table is arranged between the tops of the two I-shaped slide rails, one end of the first bearing table is provided with a first motor, an output shaft of the first motor is connected with a first nut pair, one side of the first nut pair is connected with the first lead screw, the first lead screw is in threaded connection with the first bearing table, the first bearing table is symmetrically provided with the first guide rail, the first sliding table is arranged between the two first guide rails, the first sliding table is in threaded connection with the first lead screw, the rack is provided with the first rack, the lower part of the first guide rail.

Further, the Y-shaped moving shaft mechanism comprises a second bearing table, a second motor, a second nut pair, a second lead screw, a second sliding table and a second sliding rail, the second bearing table is arranged at the upper middle part of the cabinet, the second motor is installed on the upper side of the second bearing table, the second nut pair is connected onto an output shaft of the second motor, the second lead screw is connected to one side, away from the second motor, of the second nut pair, the second sliding rail is symmetrically arranged on the second bearing table, the second sliding table is connected between the two second sliding rails in a sliding mode, the second sliding table is in threaded connection with the second lead screw, and the top of the second sliding table is connected with the bottom of the first bearing table.

Further, the Z moving shaft mechanism comprises an L-shaped bearing table, a sleeve, a third motor, a third lead screw and a tool rest, the L-shaped bearing table is arranged on the cabinet, the sleeve is arranged on the front side of the upper portion of the L-shaped bearing table, the third motor is installed at the top of the sleeve, the third lead screw is connected onto an output shaft of the third motor, the tool rest is connected to the lower side of the third lead screw in a threaded mode, and the tool rest is connected with the sleeve in a sliding mode.

Further explaining, the device also comprises a horizontal micro-adjustment mechanism, the horizontal micro-adjustment mechanism comprises a turntable, a ball, a first rotating shaft, a deep groove ball bearing and a first assembly box, first subdivision chi, first wedge, the second rack, the third guide rail, first bolt and first arc rubber circle, be equipped with the revolving stage on the first slip table, the bottom evenly is equipped with the ball in the revolving stage, be equipped with first pivot in the middle of the bottom in the revolving stage, both sides all are equipped with deep groove ball bearing about the first pivot, the revolving stage outside is equipped with first assembly box, the anterior one side slidingtype of first assembly box is equipped with first subdivision chi, the bottom is equipped with the third guide rail in the first assembly box, the gliding type is equipped with the second rack on the third guide rail, second rack one side all is equipped with first wedge with first subdivision chi one side, two first wedges are mutually supported, first assembly box opposite side screw thread formula is connected with first bolt, one side that first bolt is close to the revolving stage is equipped with first arc rubber circle.

Further, the device also comprises a pitching micro-adjustment mechanism, the pitching micro-adjustment mechanism comprises a third bearing platform, a second rotating shaft, an arc-shaped adjustment platform, a third rack, a fourth guide rail, a second micrometer, a fourth bearing platform, a second wedge-shaped block, a compression spring, a second assembly box, a second bolt and a second arc-shaped rubber ring, the third bearing platform is arranged at the top of the rotary table, the second rotating shaft is arranged on the third bearing platform in a rotating manner, the arc-shaped adjustment platform is arranged in the middle of the second rotating shaft, the fourth guide rail is arranged at the bottom in the third bearing platform, the third rack is arranged on the fourth guide rail in a sliding manner, the fourth bearing platform is arranged on one side of the top of the rotary table, the second micrometer is arranged on the fourth bearing platform in a sliding manner, the second wedge-shaped blocks are arranged on one side of the second micrometer and one side of the third rack, the two second wedge-shaped blocks are matched with each other, the second assembly box is arranged on one side of the third bearing platform, the second assembly box is provided, the inside slidingtype of second assembly box is equipped with second arc rubber circle, and second arc rubber circles the cover and has compression spring, and compression spring both ends are connected with second arc rubber circle and second assembly box respectively, and two second bolt one end and second arc rubber circle contact fit.

Further explaining, the device also comprises a measuring mechanism, the measuring mechanism comprises an interferometer, a magnetic block, a connecting rod and a sensor, the interferometer is arranged at the top of the third bearing table, the magnetic block is connected to the lower side of the tool rest, the connecting rod is connected to the magnetic block, the sensor is arranged at the bottom of the connecting rod, and the sensor is matched with the interferometer.

The invention has the beneficial effects that: according to the invention, the horizontal micro-adjustment mechanism and the pitching micro-adjustment mechanism are arranged, and the position of the machine tool to be adjusted is determined through the moving positions of the first micrometer and the second micrometer, so that the precision of the machine tool can be adjusted more accurately; simultaneously, the infrared rays thrown out by the interferometer can reflect the adjustment progress of the horizontal micro-adjustment platform and the pitching micro-adjustment platform in real time, and workers can make adjustment in time conveniently.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the X-axis mechanism of the present invention.

Fig. 3 is a schematic perspective view of the Y-axis mechanism of the present invention.

Fig. 4 is a schematic perspective view of the Z-axis mechanism of the present invention.

Fig. 5 is a first perspective view of the horizontal fine adjustment stage according to the present invention.

Fig. 6 is a second perspective view of the horizontal fine adjustment table of the present invention.

Fig. 7 is a schematic perspective view of a first fine pitch adjustment stage according to the present invention.

Fig. 8 is a schematic perspective view of a second fine pitch adjustment stage according to the present invention.

FIG. 9 is a schematic perspective view of an interferometer according to the present invention.

Reference numbers in the drawings: 1: a cabinet, 2: x moving axis mechanism, 21: i-rail, 22: i-shaped slide rail, 23: first stage, 24: first motor, 25: first nut pair, 26: first lead screw, 27: first slide table, 28: first guide rail, 29: first rack, 210: gear, 3: y moving axis mechanism, 31: second stage, 32: second motor, 33: second nut pair, 34: second lead screw, 35: second slide table, 36: second slide rail, 4: z moving axis mechanism, 41: l-shaped carrier, 42: sleeve, 43: third motor, 44: third lead screw, 45: a tool holder, 5: horizontal fine adjustment mechanism, 51: turntable, 52: balls, 53: first rotating shaft, 54: deep groove ball bearing, 55: first assembly box, 56: first micrometer, 57: first wedge block, 58: second rack, 59: third guide rail, 510: first bolt, 511: first arc rubber circle, 6: fine pitch adjustment mechanism, 61: third stage, 62: second rotation shaft, 63: arc adjustment table, 64: third rack, 65: fourth guide rail, 66: second micrometer, 67: fourth stage, 68: second wedge block, 69: compression spring, 610: second assembly box, 611: second bolt, 612: second arc rubber circle, 7: measurement mechanism, 71: interferometer, 72: magnetic block, 73: link, 74: a sensor.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 9, the embodiment of the present invention is as follows:

the utility model provides a verify fine-tuning platform of lathe precision, removes axle mechanism 2, Y removal axle mechanism 3 and Z removal axle mechanism 4 including rack 1, X, is equipped with X removal axle mechanism 2 on the rack 1, and the middle part is equipped with Y removal axle mechanism 3 on the rack 1, and the rear side is equipped with Z removal axle mechanism 4 on the rack 1.

The X moving shaft mechanism 2 comprises an i-shaped guide rail 21, i-shaped slide rails 22, a first carrying platform 23, a first motor 24, a first nut pair 25, a first lead screw 26, a first sliding platform 27, a first guide rail 28, a first rack 29 and a gear 210, wherein the i-shaped guide rails 21 are arranged on the left side and the right side of the cabinet 1, the i-shaped slide rails 22 are arranged on the i-shaped guide rails 21 in a sliding manner, the first carrying platform 23 is arranged between the tops of the two i-shaped slide rails 22, the first motor 24 is arranged at the right end of the first carrying platform 23, the first nut pair 25 is connected to the output shaft of the first motor 24, the first lead screw 26 is connected to the left side of the first nut pair 25, the first lead screw 26 is in threaded connection with the first carrying platform 23, the first guide rails 28 are symmetrically arranged in the front and back of the first carrying platform 23, the first sliding platform 27 is arranged between the two first guide rails 28 in a sliding manner, the first sliding platform 27, the gear 210 is rotatably disposed at the lower right portion of the first guide rail 28, and the gear 210 is engaged with the first rack 29.

Y removes axle mechanism 3 including second plummer 31, second motor 32, the vice 33 of second nut, second lead screw 34, second slip table 35 and second slide rail 36, the middle part is equipped with second plummer 31 on rack 1, second motor 32 is installed to second plummer 31 rear portion upside, be connected with the vice 33 of second nut on the output shaft of second motor 32, the vice 33 front side of second nut is connected with second lead screw 34, bilateral symmetry is equipped with second slide rail 36 on the second plummer 31, sliding connection has second slip table 35 between two second slide rails 36, second slip table 35 and the threaded connection of second lead screw 34, second slip table 35 top is connected with first plummer 23 bottom.

The Z-moving axis mechanism 4 includes an L-shaped bearing platform 41, a sleeve 42, a third motor 43, a third lead screw 44 and a tool post 45, the L-shaped bearing platform 41 is arranged on the rear side of the cabinet 1, the sleeve 42 is arranged on the front side of the upper portion of the L-shaped bearing platform 41, the third motor 43 is mounted on the top of the sleeve 42, the third lead screw 44 is connected to an output shaft of the third motor 43, the tool post 45 is in threaded connection with the lower side of the third lead screw 44, and the tool post 45 is in sliding connection with the sleeve 42.

People can cut parts by a machine tool, a worker firstly fixes the parts to be machined on the first sliding table 27, then the first motor 24 and the second motor 32 are started, an output shaft of the second motor 32 rotates to drive the second nut pair 33 to rotate, so as to drive the second lead screw 34 to rotate, further drive the second sliding table 35 to move back and forth, so as to drive the first bearing table 23 to move back and forth, thereby achieving the purpose of driving the parts to be machined to move back and forth, meanwhile, an output shaft of the first motor 24 rotates to drive the first nut pair 25 to rotate, further drive the first lead screw 26 to rotate, further drive the first sliding table 27 to move left and right, so as to drive the parts to be machined to move left and right, at the moment, the worker can mount a blade on the tool rest 45, then start the third motor 43, an output shaft of the third motor 43 drives the third lead screw 44 to rotate, further drive the tool rest 45 to move up and down, so that the blade continuously, after the parts are machined, the first motor 24, the second motor 32 and the third motor 43 are turned off, and then the machined parts are taken out.

The horizontal micro-adjustment mechanism 5 is further included, the horizontal micro-adjustment mechanism 5 includes a rotary table 51, balls 52, a first rotating shaft 53, deep groove ball bearings 54, a first assembling box 55, a first dividing ruler 56, first wedge blocks 57, a second rack 58, a third guide rail 59, a first bolt 510 and a first arc rubber ring 511, the rotary table 51 is arranged on the first sliding table 27, the balls 52 are uniformly arranged at the bottom of the rotary table 51, the first rotating shaft 53 is arranged in the middle of the bottom of the rotary table 51, the deep groove ball bearings 54 are arranged on the upper side and the lower side of the first rotating shaft 53, the first assembling box 55 is arranged outside the rotary table 51, the first dividing ruler 56 is arranged on the left side of the front portion of the first assembling box 55 in a sliding manner, the third guide rail 59 is arranged at the bottom of the first assembling box 55, the second rack 58 is arranged on the third guide rail 59 in a sliding manner, the first wedge blocks 57 are arranged on the left side of the second rack 58 and the rear side of the first dividing ruler, the rear side of the first assembling box 55 is connected with a first bolt 510 in a threaded manner, and the front side of the first bolt 510 is provided with a first arc-shaped rubber ring 511.

The pitching micro-adjustment mechanism 6 is further included, the pitching micro-adjustment mechanism 6 includes a third bearing platform 61, a second rotating shaft 62, an arc-shaped adjustment platform 63, a third rack 64, a fourth guide rail 65, a second micrometer 66, a fourth bearing platform 67, a second wedge-shaped block 68, a compression spring 69, a second assembly box 610, a second bolt 611 and a second arc-shaped rubber ring 612, the third bearing platform 61 is arranged at the top of the turntable 51, the second rotating shaft 62 is rotatably arranged on the third bearing platform 61, the arc-shaped adjustment platform 63 is arranged in the middle of the second rotating shaft 62, the fourth guide rail 65 is arranged at the bottom in the third bearing platform 61, the third rack 64 is slidably arranged on the fourth guide rail 65, the fourth bearing platform 67 is arranged on the left side of the top of the turntable 51, the second micrometer 66 is slidably arranged on the fourth bearing platform 67, the second wedge-shaped block 68 is arranged on the rear side of the second micrometer 66 and the left side of the third rack 64, the two second wedge-shaped blocks 68 are matched with each other, the front side of the third bearing table 61 is provided with a second assembling box 610, the left side of the second assembling box 610 is provided with a second bolt 611 in an up-down symmetrical threaded manner, the right side inside the second assembling box 610 is provided with a second arc-shaped rubber ring 612 in a sliding manner, the second arc-shaped rubber ring 612 is sleeved with a compression spring 69, two ends of the compression spring 69 are respectively connected with the second arc-shaped rubber ring 612 and the second assembling box 610, and the right ends of the two second bolts 611 are in contact fit with the second arc-shaped rubber ring 612.

The measuring device is characterized by further comprising a measuring mechanism 7, wherein the measuring mechanism 7 comprises an interferometer 71, a magnetic block 72, a connecting rod 73 and a sensor 74, the interferometer 71 is arranged at the top of the third bearing table 61, the magnetic block 72 is connected to the lower side of the tool rest 45, the connecting rod 73 is connected to the right end of the magnetic block 72, the sensor 74 is arranged at the bottom of the connecting rod 73, and the sensor 74 is matched with the interferometer 71.

Because the machine tool has a certain requirement on the precision of part processing, after the machine tool runs for a period of time, the first guide rail 28 and the second guide rail 36 are worn to a certain extent, and meanwhile, the first sliding table 27 and the second sliding table 35 are slightly inclined, at this time, a worker needs to verify the precision of the machine tool, the worker can open the interferometer 71 and open the first motor 24 and the second motor 32 simultaneously, so that the machine tool starts to move, the worker can observe whether the precision of the machine tool is accurate through infrared rays projected by the interferometer 71, if a point projected by the infrared rays onto the sensor 74 is always kept at one position, the precision of the machine tool still meets the standard, if the point projected by the infrared rays onto the sensor 74 does not keep consistent, the precision of the machine tool is inaccurate, if the precision of the machine tool is inaccurate, the worker can confirm how the machine tool needs to be adjusted through adjusting the horizontal fine adjustment platform and the pitching fine adjustment platform, firstly, the worker can manually push the first micrometer 56 to move, so as to drive the first wedge block 57 to move, and further drive the second rack 58 to move, the second rack 58 is meshed with teeth on the rotary table 51, so that the rotary table 51 rotates, since the micrometer can be accurate to millimeter, the worker can adjust the angle of the rotary table 51 by adjusting the position of the micrometer at this time, when the point of the infrared ray projected on the sensor 74 is adjusted to not deviate left and right, the worker can manually rotate the first bolt 510 at this time, so as to drive the first arc-shaped rubber ring 511 to approach the rotary table 51 until the first arc-shaped rubber ring 511 clings to the rotary table 51 and fixes the rotary table 51, and then the worker manually rotates the second bolt 611, so that the second arc-shaped rubber ring 612 moves rightwards, the compression spring 69 is compressed, the second arc-shaped rubber ring 612 does not fix the second rotating shaft 62 any more, at this time, the worker can manually move the second micrometer 66, second micrometer 66 drives second wedge 68 and removes to drive third rack 64 and remove, make arc adjustment platform 63 rotate, when adjusting the point that infrared ray projects on sensor 74 and no longer squints from top to bottom, staff can rotate second bolt 611 compression spring 69 towards the opposite direction this moment and reset and drive second arc rubber circle 612 and reset, second arc rubber circle 612 fixes second pivot 62 this moment, and staff can adjust the lathe through the position and the angle of first micrometer 56 and the adjustment of second micrometer 66.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A micro-adjustment platform for verifying the precision of a machine tool is characterized in that: the X-axis moving mechanism (2) is arranged on the cabinet (1), the Y-axis moving mechanism (3) and the Z-axis moving mechanism (4) are arranged in the middle of the cabinet (1), the Y-axis moving mechanism (3) is arranged on the cabinet (1), and the Z-axis moving mechanism (4) is arranged on the cabinet (1).

2. A fine tuning platform for verifying the accuracy of machine tools as claimed in claim 1, wherein: the X moving shaft mechanism (2) comprises an I-shaped guide rail (21), I-shaped slide rails (22), a first bearing table (23), a first motor (24), a first nut pair (25), a first lead screw (26), a first sliding table (27), a first guide rail (28), a first rack (29) and a gear (210), the I-shaped guide rails (21) are arranged on the left side and the right side of the cabinet (1), the I-shaped slide rails (22) are arranged on the I-shaped guide rails (21) in a sliding mode, the first bearing table (23) is arranged between the tops of the two I-shaped slide rails (22), the first motor (24) is installed at one end of the first bearing table (23), the first nut pair (25) is connected onto an output shaft of the first motor (24), the first lead screw (26) is connected to one side of the first nut pair (25), the first lead screw (26) is in threaded connection with the first bearing table (23), the first guide rails (28) are symmetrically arranged on the, a first sliding table (27) is arranged between the two first guide rails (28) in a sliding mode, the first sliding table (27) is in threaded connection with a first lead screw (26), a first rack (29) is arranged on the cabinet (1), a gear (210) is rotatably arranged on the lower portion of each first guide rail (28), and the gear (210) is meshed with the first rack (29).

3. A fine tuning platform for verifying the accuracy of machine tools as claimed in claim 2, wherein: y removes axle mechanism (3) including second plummer (31), second motor (32), vice (33) of second nut, second lead screw (34), second slip table (35) and second slide rail (36), the middle part is equipped with second plummer (31) on cabinet (1), second motor (32) are installed to second plummer (31) upside, be connected with vice (33) of second nut on the output shaft of second motor (32), the vice (33) of second nut is kept away from one side of second motor (32) and is connected with second lead screw (34), the symmetry is equipped with second slide rail (36) on second plummer (31), sliding connection has second slipway (35) between two second slide rail (36), second slipway (35) are connected with second lead screw (34) screw formula, second slipway (35) top is connected with first plummer (23) bottom.

4. A fine tuning platform for verifying the accuracy of machine tools as claimed in claim 3, wherein: z removes axle mechanism (4) including L type plummer (41), sleeve (42), third motor (43), third lead screw (44) and knife rest (45), be equipped with L type plummer (41) on rack (1), L type plummer (41) upper portion front side is equipped with sleeve (42), third motor (43) are installed at sleeve (42) top, be connected with third lead screw (44) on the output shaft of third motor (43), third lead screw (44) downside thread type is connected with knife rest (45), knife rest (45) and sleeve (42) sliding type are connected.

5. A fine tuning platform for verifying the accuracy of machine tools as claimed in claim 4, wherein: the horizontal micro-adjustment mechanism (5) comprises a rotary table (51), balls (52), a first rotating shaft (53), deep groove ball bearings (54), a first assembly box (55), a first micrometer (56), a first wedge block (57), a second rack (58), a third guide rail (59), a first bolt (510) and a first arc-shaped rubber ring (511), wherein the rotary table (51) is arranged on the first sliding table (27), the balls (52) are uniformly arranged at the bottom in the rotary table (51), the first rotating shaft (53) is arranged in the middle of the bottom in the rotary table (51), the deep groove ball bearings (54) are respectively arranged at the upper side and the lower side of the first rotating shaft (53), the first assembly box (55) is arranged outside the rotary table (51), the first micrometer (56) is arranged on one side of the front portion of the first assembly box (55) in a sliding manner, the third guide rail (59) is arranged at the bottom in the first assembly box (55), a second rack (58) is arranged on the third guide rail (59) in a sliding mode, first wedge blocks (57) are arranged on one side of the second rack (58) and one side of the first micrometer (56), the two first wedge blocks (57) are matched with each other, a first bolt (510) is connected to the other side of the first assembly box (55) in a threaded mode, and a first arc-shaped rubber ring (511) is arranged on one side, close to the rotary table (51), of the first bolt (510).

6. A fine tuning platform for verifying the accuracy of machine tools as claimed in claim 5, wherein: the novel turntable is characterized by further comprising a pitching micro-adjustment mechanism (6), wherein the pitching micro-adjustment mechanism (6) comprises a third bearing table (61), a second rotating shaft (62), an arc-shaped adjustment table (63), a third rack (64), a fourth guide rail (65), a second micrometer (66), a fourth bearing table (67), a second wedge-shaped block (68), a compression spring (69), a second assembly box (610), a second bolt (611) and a second arc-shaped rubber ring (612), the top of the turntable (51) is provided with the third bearing table (61), the third bearing table (61) is rotatably provided with the second rotating shaft (62), the middle of the second rotating shaft (62) is provided with the arc-shaped adjustment table (63), the inner bottom of the third bearing table (61) is provided with a fourth guide rail (65), the fourth guide rail (65) is slidably provided with the third rack (64), one side of the top of the turntable (51) is provided with the fourth bearing table (67), and the second micrometer (66) is slidably provided with the fourth bearing table (67), second micrometer (66) one side and third rack (64) one side all are equipped with second wedge (68), two second wedge (68) are mutually supported, third plummer (61) one side is equipped with second assembly box (610), the up-and-down symmetry screw thread formula in second assembly box (610) one side is equipped with second bolt (611), the inside slidingtype of second assembly box (610) is equipped with second arc rubber circle (612), cover has compression spring (69) on second arc rubber circle (612), compression spring (69) both ends are connected with second arc rubber circle (612) and second assembly box (610) respectively, two second bolt (611) one end and second arc rubber circle (612) contact cooperation.

7. A fine tuning platform for verifying the accuracy of machine tools as claimed in claim 6, wherein: the measuring device is characterized by further comprising a measuring mechanism (7), wherein the measuring mechanism (7) comprises an interferometer (71), a magnetic block (72), a connecting rod (73) and a sensor (74), the interferometer (71) is arranged at the top of the third bearing table (61), the magnetic block (72) is connected to the lower side of the tool rest (45), the connecting rod (73) is connected to the magnetic block (72), the sensor (74) is arranged at the bottom of the connecting rod (73), and the sensor (74) is matched with the interferometer (71).