A high-precision indexing accuracy detection structure and method for realizing a locking device gear disc

Abstract

The present invention discloses a structure and method for detecting the high-precision indexing accuracy of the gear disc of a locking device. The detection structure includes a workbench, a lifting base, a tooling, a lower gear disc, a positioning pin, an upper gear disc meshed with the lower gear disc, a light pipe, a 99 digital display autocollimator and a computer; the tooling includes a detection base, connecting screws, a lifting shaft for driving the upper gear disc to lift and lower, a gasket, a fixing screw, a polyhedron, a pressing block and a transition plate. The upper gear disc is connected to the gasket through the fixing screw, the transition plate is connected to the upper gear disc through the upper gear disc screw, and a polyhedron is installed on the transition plate for detecting the indexing accuracy of the gear disc. The present invention raises the upper gear disc through the lifting shaft, manually rotates the upper gear disc to a certain angle, detects through the light pipe, and connects the 99 digital display autocollimator to observe the indication, thereby measuring the indexing accuracy of the meshing of the upper and lower gear discs, solving the problem that the indexing accuracy of the gear disc of the locking device is difficult to detect.

Description

Technical Field

[0001] The present invention relates to the field of precision measurement technology, and in particular to a high-precision indexing accuracy detection structure and method for realizing a gear disk of a locking device. Background Art

[0002] The locking device is a device supporting the inertial measurement integrated equipment. As a part of the inertial measurement integrated equipment, it is used to achieve mechanical locking between the inertial measurement unit and the inertial measurement unit chassis, realize positioning and locking, and can withstand mechanical environments such as vibration, impact, overload, etc. of corresponding magnitude to ensure reliable locking between the inertial measurement unit and the inertial measurement unit chassis. The main components of the locking device include the upper gear plate and the lower gear plate. After the upper gear plate and the lower gear plate are engaged, they can be used to achieve mechanical locking between the inertial measurement unit and the inertial unit chassis.

[0003] 99 digital autocollimator can be used for precision measurement of small angles, such as the calibration of multi-faceted prisms and multi-tooth indexing tables, and can also measure the linearity, parallelism, verticality and relative position of precision parts such as high-precision guide rails. It can also be used for non-contact positioning in precision measurement and instrument calibration, and can be used for automatic measurement. The instrument has the characteristics of high accuracy, good stability, simple installation and easy use. It is an indispensable testing instrument for precision machinery measurement, instrument manufacturing and related scientific research and metrology departments.

[0004] Due to the special structure of the lower toothed disc of the locking device, the indexing accuracy of the upper and lower toothed discs (the indexing accuracy and the degree of engagement are indicators reflected by the two toothed discs) is difficult to detect. As a result, the degree of engagement of the two toothed discs cannot be calibrated, thus affecting the locking performance of the product. Therefore, it is urgent to develop a high-precision indexing accuracy detection structure for the toothed discs of a locking device that is simple, easy to implement, low in cost and can effectively overcome the difficulties in the prior art. Summary of the invention

[0005] The first object of the present invention is to provide a high-precision indexing accuracy detection structure for the locking device gear disc, which is used in conjunction with a 99 digital display autocollimator and a multifaceted prism to detect the indexing accuracy.

[0006] A second object of the present invention is to provide a method for detecting the indexing accuracy of a locking device toothed disc with high precision.

[0007] The first object of the present invention is achieved by:

[0008] A high-precision indexing accuracy detection structure for a locking device gear disc comprises a workbench, a lifting base, a lower gear disc, an upper gear disc, a light tube, a 99 digital display autocollimator, and a computer. The lifting base with a spindle screw hole in the center is arranged on the workbench. The lifting base comprises a handle, a limit ball, an eccentric shaft, a groove, a limit groove, an outer ring, a spindle, a limit column and a limit spring. The eccentric shaft is connected to the handle. The eccentric part of the eccentric shaft is connected to and contacts the spindle through the outer ring. A spindle screw hole is arranged in the middle of the upper part of the spindle. The lower gear disc is an annular disc with side ears on the left and right sides and end teeth on the edge. The upper gear disc is an annular disc with end teeth on the edge. The upper gear disc is arranged above the lower gear disc. The end teeth at the bottom of the disc can mesh with the end teeth at the top of the lower toothed disc. An upper toothed disc center hole is provided in the middle of the upper toothed disc, and a lower toothed disc center hole and a lower toothed disc through hole are provided in the middle and on the side ears of the lower toothed disc, respectively. The light tube is placed on the edge of the workbench through a supporting tube, and the light tube is connected to the signal input end of the 99 digital display autocollimator through a wire, and the signal output end of the 99 digital display autocollimator is connected to the computer. The feature is that it also includes a tooling consisting of a detection base, connecting screws, positioning pins, a lifting shaft, a gasket, a fixing screw, a transition plate, a polyhedral prism and a pressing block, a detection base is provided on the lifting base, and detection bases are respectively provided at the center and edge of the detection base, both of which penetrate the detection base. The connecting screw passes through the central through hole of the detection base and the through hole on the side of the detection base, and is screwed into the main shaft screw hole on the main shaft of the lifting base to fix the detection base on the upper surface of the lifting base; a lower gear disc is provided on the detection base, and the positioning pin passes through the lower gear disc through hole of the side ear of the lower gear disc and the through hole on the side of the detection base to fix the lower gear disc on the detection base; a connecting screw hole is provided in the middle above the connecting screw, and the lifting shaft with a "T"-shaped cross section passes through the upper gear disc center hole of the upper gear disc and the lower gear disc center hole of the lower gear disc from top to bottom and is screwed into the connecting screw hole of the connecting screw to connect the upper gear disc, the lower gear disc and the connecting screw together; a lower gear disc is provided in the middle above the lifting shaft A transition plate with a lifting shaft screw hole and a transition plate through hole in the center is placed on the upper gear disk, the inner diameter of the transition plate through hole, the outer diameter of the gasket and the outer diameter of the fixing screw are all larger than the inner diameter of the center hole of the upper gear disk, the inner diameter of the transition plate through hole is slightly larger than the outer diameter of the gasket and the fixing screw, the fixing screw arranged in the transition plate through hole passes through the gasket from top to bottom and is screwed into the lifting shaft screw hole, so that the lifting shaft can only be moved vertically in the transition plate through hole when moving up and down; a polyhedron is provided on the transition plate, and a pressure block is provided on the polyhedron, and the polyhedron is used for gear disk indexing accuracy detection; the transition plate and the upper gear disk, the polyhedron and the pressure block are a whole; the transition plate is connected to the upper gear disk through the upper gear disk screw.

[0009] The wing plate of the lifting shaft is arranged between the upper gear plate and the lower gear plate, and the diameter of the wing plate of the lifting shaft is larger than the inner diameter of the upper gear plate center hole of the upper gear plate and the inner diameter of the lower gear plate center hole of the lower gear plate, that is, the middle bottom of the upper gear plate is arranged on the wing plate of the lifting shaft, and the lifting shaft supports the upper gear plate.

[0010] By manually turning the handle of the lifting base clockwise or counterclockwise, the handle drives the eccentric shaft to rotate horizontally, the eccentric shaft drives the main shaft to rise or fall through the outer ring, the main shaft drives the lifting shaft to rise or fall through the connecting screws, and the lifting shaft controls the upper gear plate to rise or fall; the lifting shaft and the upper gear plate are in upper and lower contact relationship. For example, after the upper gear plate is raised, the upper gear plate is separated from the lower gear plate, and the transition plate, the upper gear plate, the polyhedron and the pressure block are rotated as a whole at a certain angle relative to the lifting shaft; when descending, the upper gear plate is lowered with the lifting shaft by gravity, and a gasket presses the upper gear plate from above.

[0011] The second object of the present invention is achieved by:

[0012] A method for detecting the high-precision indexing accuracy of a locking device toothed disc is characterized by comprising the following steps:

[0013] S1. First, place the lifting base on the workbench. The lifting base is in the descending state. The outer circle of the bottom surface of the lifting base that contacts the workbench is glued with 502 glue to ensure that the lifting base will not move easily. Place the detection base on the lifting base, and connect the connecting screws through the detection base center through hole of the detection base and the lifting base screw hole in the center of the lifting base. Similarly, the outer circle of the bottom surface of the detection base that contacts the lifting base is glued and fixed with 502 glue.

[0014] S2. Place the lower gear disc on the detection base, pass the positioning pin through the lower gear disc through hole on the side ear of the lower gear disc and the detection base side through hole of the detection base, fix the lower gear disc on the detection base, and screw the lifting shaft with a "T"-shaped cross section into the connecting screw hole of the connecting screw after passing through the upper gear disc center hole of the upper gear disc and the lower gear disc center hole of the lower gear disc from top to bottom, connect the upper gear disc, the lower gear disc and the connecting screw together, place the upper gear disc on the lower gear disc, ensure that the upper gear disc and the lower gear disc are meshed with each other, and the upper part of the lifting shaft passes through the upper gear disc center hole of the upper gear disc. The middle bottom of the upper gear disc is arranged on the wing plate of the lifting shaft, and the lifting shaft supports the upper gear disc;

[0015] S3, the fixing screw passes through the gasket downward and is screwed into the screw hole of the lifting shaft, the lifting shaft is fixed with the fixing screw and the gasket, the transition plate is fixed to the upper gear plate through the upper gear plate screw, and the polyhedral prism and the pressure block are placed on the transition plate;

[0016] S4. Place the light tube on the edge of the workbench through the support tube, aim the light tube at the polyhedron, and adjust the position of the light tube so that the two crosshairs are aligned; take the lower position where the upper and lower gear discs are in meshing as the starting position, aim the light tube at the first face of the polyhedron, and record the reading C of the 99 digital display autocollimator. 1 ;

[0017] S5. Control the lifting base to raise the upper gear disc: manually turn the handle of the lifting base clockwise, the handle drives the eccentric shaft to rotate horizontally, the eccentric shaft drives the main shaft to rise through the outer ring, the main shaft drives the lifting shaft to rise through the connecting screw, the lifting shaft pushes the upper gear disc to rise, so that the upper gear disc is separated from the lower gear disc;

[0018] S6. Rotate the polyhedron to the next prism face in turn, with a rotation angle of 30°. At this time, the upper gear plate and the transition plate rotate together with the polyhedron. Record once every rotation. Continue to the 10th face and record the corresponding readings of each angle of the 99 digital display autocollimator C n ;

[0019] S7. The specific value of the division accuracy is calculated using the conventional formula.

[0020] Furthermore, the required range of the division accuracy is ≤5″.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention uses the detection tooling in conjunction with the 99 digital display autocollimator and the multifaceted prism, manually controls the lifting base to raise the upper gear disc and rotate it to a certain angle to fall, adjusts the position of the light tube to align the two crosshairs of the light tube, reads the display number from the 99 digital display autocollimator, and thus calculates the specific value of the division accuracy;

[0023] 2. The present invention adopts a 99 digital display autocollimator with a large field of view. The reflected image reflected by the object to be measured can be observed through the eyepiece. The measurement process is intuitive and has the characteristics of high accuracy, good stability, and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is an overall structural diagram of an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Top view after rotating 90 degrees;

[0026] Figure 3 It is a structural diagram of the lifting base;

[0027] Figure 4 It is an enlarged schematic diagram of the connection between the upper gear plate, fixing screws, gaskets and lifting shaft;

[0028] Figure 5 yes Figure 4 Bottom view of

[0029] In the figure: 1, workbench, 2, lifting base, 3, connecting screws, 4, detection base, 5, lower gear disc, 6, positioning pin, 7, upper gear disc, 8, lifting shaft, 9, fixing screws, 10, polyhedral prism, 11, transition plate, 12, light pipe, 13, pressure block, 14, 99 digital display autocollimator, 15, computer, 16, gasket, 17, upper gear disc screw, 21, handle, 22, limit ball, 23, eccentric shaft, 24, groove, 25, limit groove, 26, outer ring, 27, main shaft, 28, limit column, 29, limit spring, 271, main shaft screw hole, 31, connecting screw hole, 41, detection base center through hole, 42, detection base side through hole, 51, lower gear disc through hole, 52, lower gear disc center hole, 71, upper gear disc center hole, 81. lifting shaft screw hole, 82. wing plate, 111. transition plate through hole, 121. support tube. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] A high-precision indexing accuracy detection structure for a locking device gear disc comprises a workbench 1, a lifting base 2, a lower gear disc 5, an upper gear disc 7, a tool, an upper gear disc screw 17, a polyhedral prism 10, a pressing block 13, a light pipe 12, a 99 digital display autocollimator 14, and a computer 15. The tool consists of a detection base 4, a connecting screw 3, a positioning pin 6, a lifting shaft 8, a fixing screw 9, a gasket 16, and a transition plate 11, wherein:

[0032] A lifting base 2 with a lifting base screw hole 211 in the center is arranged on the workbench 1, and the lifting base 2 includes a handle 21, a limiting ball 22, an eccentric shaft 23, a groove 24, a limiting groove 25, an outer ring 26, a main shaft 27, a limiting column 28 and a limiting spring 29. The eccentric shaft 23 is connected to the handle 21, and the eccentric part of the eccentric shaft 23 is connected and contacts with the main shaft 27 through the outer ring 26. A main shaft screw hole 271 is arranged in the middle of the upper part of the main shaft 27. The lower gear plate 5 is an annular plate with side ears on the left and right sides and end teeth on the edge. The upper gear plate 7 is an annular plate with end teeth on the edge. The upper gear plate 7 is arranged above the lower gear plate 5. The end teeth at the bottom of the upper gear plate 7 can mesh with the end teeth at the top of the lower gear plate 5. An upper gear plate center hole 71 is arranged in the middle of the upper gear plate 7. The middle and side ears of the disk 5 are respectively provided with a lower toothed disk center hole 52 and a lower toothed disk through hole 51, the light tube 12 is placed on the edge of the workbench 1 through a support tube 121, the light tube 12 is connected to the signal input end of the 99 digital display autocollimator 14 through a wire, and the signal output end of the 99 digital display autocollimator 14 is connected to the computer 15, and the feature is that it also includes a tool consisting of a detection base 4, a connecting screw 3, a positioning pin 6, a lifting shaft 8, a gasket 16, a fixing screw 9, a transition plate 11, a polyhedral prism 10 and a pressing block 13, a detection base 4 is provided on the lifting base 2, and a detection base center through hole 41 and a detection base side through hole 42 that both penetrate the detection base 4 are respectively provided at the center and edge of the detection base 4, and after the connecting screw 3 passes through the detection base center through hole 41 Screw into the main shaft screw hole 271 on the main shaft 27 of the lifting base 2, and fix the detection base 4 on the upper surface of the lifting base 2; a lower gear plate 5 is provided on the detection base 4, and the positioning pin 6 passes through the lower gear plate through hole 51 of the side ear of the lower gear plate 5 and the detection base side through hole 42 of the detection base 4 to fix the lower gear plate 5 on the detection base 4; a connecting screw hole 31 is provided in the middle of the upper part of the connecting screw 3, and the lifting shaft 8 with a "T"-shaped cross section passes through the upper gear plate center hole 71 of the upper gear plate 7 and the lower gear plate center hole 52 of the lower gear plate 5 from top to bottom and then screwed into the connecting screw hole 31 of the connecting screw 3 to connect the upper gear plate 7, the lower gear plate 5 and the connecting screw 3 together; a lifting shaft screw hole 81 is provided in the middle of the upper part of the lifting shaft 8, and a transition plate through hole 111 is provided in the center The plate 11 is placed on the upper toothed disc 7. The inner diameter of the transition plate through hole 111, the outer diameter of the gasket 16 and the outer diameter of the fixing screw 9 are all larger than the inner diameter of the upper toothed disc center hole 71. The inner diameter of the transition plate through hole 111 is slightly larger than the outer diameters of the gasket 16 and the fixing screw 9. The fixing screw 9 arranged in the transition plate through hole 111 passes through the gasket 16 from top to bottom and is screwed into the lifting shaft screw hole 81, so that the lifting shaft 8 can only be pressed and moved vertically in the transition plate through hole 111 when moving up and down; a polyhedral prism 10 is arranged on the transition plate 11, and a pressure block 13 is arranged on the top of the polyhedral prism 10, and the polyhedral prism 10 is used for toothed disc indexing accuracy detection; the transition plate 11 and the upper toothed disc 7, the polyhedral prism 10 and the pressure block 13 are a whole; the transition plate 11 is connected to the upper toothed disc 7 by the upper toothed disc screw 17.

[0033] The wing plate 82 of the lifting shaft 8 is arranged between the upper gear plate 7 and the lower gear plate 5, and the diameter of the wing plate 82 of the lifting shaft 8 is larger than the inner diameter of the upper gear plate center hole 71 of the upper gear plate 7 and the inner diameter of the lower gear plate center hole 52 of the lower gear plate 5, that is, the middle bottom of the upper gear plate 7 is arranged on the top of the wing plate 82 of the lifting shaft 8, and the lifting shaft 8 supports the upper gear plate 7.

[0034] By manually turning the handle 21 of the lifting base 2 clockwise or counterclockwise, the handle 21 drives the eccentric shaft 23 to rotate horizontally, the eccentric shaft 23 drives the main shaft 27 to rise or fall through the outer ring 26, the main shaft 27 drives the lifting shaft 8 to rise or fall through the connecting screw 3, and the lifting shaft 8 controls the upper gear plate 7 to rise or fall; the lifting shaft 8 and the upper gear plate 7 are in a vertical contact relationship. For example, after the upper gear plate 7 is raised, the upper gear plate 7 is separated from the lower gear plate 5, and the transition plate 11, the upper gear plate 7, the polyhedral prism 10 and the pressing block 13 are rotated as a whole relative to the lifting shaft 8 at a certain angle; when descending, the upper gear plate 7 is descended with the lifting shaft 8 by gravity, and a gasket 16 presses the upper gear plate 7 from above.

[0035] In order to freely control the lifting of the upper toothed disc 7, the detection structure is designed with a lifting shaft 8, which can pass through the center hole 52 of the lower toothed disc without interference, and is connected to the main shaft 27 of the lifting base 2 through the connecting screw 3. In order to prevent the lower toothed disc 5 from shifting, a positioning pin 6 is provided to tightly connect the lower toothed disc 5 with the detection base 4.

[0036] A method for detecting the high-precision indexing accuracy of a locking device toothed disc comprises the following steps:

[0037] S1. First, place the lifting base 2 on the workbench 1. The lifting base 2 is in a descending state. The outer circumference of the bottom surface of the lifting base 2 in contact with the workbench 1 is glued with 502 glue to ensure that the lifting base 2 will not move easily. Place the detection base 4 on the lifting base 2. The connecting screw 3 passes through the detection base center through hole 41 of the detection base 4 and is connected to the main shaft screw hole 271 in the center of the lifting base 2. Similarly, the outer circumference of the bottom surface of the detection base 4 in contact with the lifting base 2 is glued and fixed with glue.

[0038] S2, place the lower gear disc 5 on the detection base 4, the positioning pin 6 passes through the lower gear disc through hole 51 on the side ear of the lower gear disc 5 and the detection base side through hole 42 of the detection base 4, fix the lower gear disc 5 on the detection base 4, the lifting shaft 8 with a "T"-shaped cross section passes through the upper gear disc center hole 71 of the upper gear disc 7 and the lower gear disc center hole 52 of the lower gear disc 5 from top to bottom, and then screws into the connecting screw hole 31 of the connecting screw 3, connect the upper gear disc 7, the lower gear disc 5, and the connecting screw 3 together, place the upper gear disc 7 on the lower gear disc 5, ensure that the upper gear disc 7 and the lower gear disc 5 are meshed with each other, and the lifting shaft 8 passes through the center hole of the upper gear disc 7 as shown in the figure;

[0039] S3, the gasket and the fixing screw 9 are screwed into the lifting shaft screw hole 81 from top to bottom, and the lifting shaft 8 is fixed with the gasket and the fixing screw 9. The transition plate 11 is fixed to the upper gear plate 7 by the upper gear plate screw, and the polyhedral prism 10 and the pressing block 13 are placed on the transition plate 11;

[0040] S4. Place the light tube 12 on the edge of the workbench 1 through the support tube 121, align the light tube 12 with the polyhedral prism 10, and adjust the position of the light tube 12 so that the two crosshairs are aligned; take the lowered position where the upper gear plate 7 and the lower gear plate 5 are in meshing as the starting position, align the light tube 12 with the first surface of the polyhedral prism 10, and record the reading C of the 99 digital display autocollimator 14 1 ;

[0041] S5. Control the lifting base 2 to raise the upper gear plate 7: manually turn the handle 21 of the lifting base 2 clockwise, the handle 21 drives the eccentric shaft 23 to rotate horizontally, the eccentric shaft 23 drives the main shaft 27 to rise through the outer ring 26, the main shaft 27 drives the lifting shaft 8 to rise through the connecting screw 3, the lifting shaft 8 pushes the upper gear plate 7 to rise, so that the upper gear plate 7 is separated from the lower gear plate 5;

[0042] S6. Rotate the polyhedron 10 to the next prism face in sequence, with a rotation angle of 30°. At this time, the upper gear plate 7 and the transition plate 11 rotate together with the polyhedron 10. Record once every rotation. Continue to rotate to the 10th face and record the corresponding reading C of each angle of the 99 digital display autocollimator 14. n ;

[0043] S7. The specific value of the division accuracy is calculated using the conventional formula.

[0044] Furthermore, the required range of the division accuracy is ≤5″.

[0045] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A high-precision indexing accuracy detection structure for a locking device gear disc, comprising a workbench, a lifting base, a lower gear disc, an upper gear disc, a light pipe, a 99 digital display autocollimator, and a computer. The lifting base with a spindle screw hole in the center is arranged on the workbench. The lifting base comprises a handle, a limit ball, an eccentric shaft, a groove, a limit groove, an outer ring, a spindle, a limit column, and a limit spring. The eccentric shaft is connected to the handle, and the eccentric part of the eccentric shaft is connected and in contact with the spindle through the outer ring. A spindle screw hole is arranged in the middle of the upper side of the spindle. The lower gear disc is provided with side screws on the left and right sides. The upper toothed disc is an annular disc with end teeth on the edge, the upper toothed disc is arranged above the lower toothed disc, the end teeth at the bottom of the upper toothed disc can mesh with the end teeth at the top of the lower toothed disc, an upper toothed disc center hole is arranged in the middle of the upper toothed disc, a lower toothed disc center hole and a lower toothed disc through hole are arranged in the middle and on the side ears of the lower toothed disc, the light tube is placed on the edge of the workbench through the support tube, the light tube is connected to the signal input end of the 99 digital display autocollimator through a wire, and the signal output end of the 99 digital display autocollimator is connected to the computer, characterized in that: It also includes a tooling consisting of a detection base, connecting screws, positioning pins, a lifting shaft, gaskets, fixing screws, a transition plate, a polyhedral prism and a pressure block. A detection base is provided on the lifting base. A detection base center through hole and a detection base side through hole are respectively provided at the center and edge of the detection base, both of which penetrate the detection base. The connecting screw passes through the detection base center through hole and is screwed into the spindle screw hole on the spindle of the lifting base to fix the detection base on the upper surface of the lifting base; a lower gear plate is provided on the detection base, and the positioning pin passes through the lower gear plate through hole of the side ear of the lower gear plate and the detection base side through hole of the detection base to fix the lower gear plate on the detection base; a connecting screw hole is provided in the middle above the connecting screw, and the lifting shaft with a "T"-shaped cross section passes through the upper gear plate center hole of the upper gear plate and the lower gear plate center hole of the lower gear plate from top to bottom. Then screw it into the connecting screw hole of the connecting screw to connect the upper gear plate, the lower gear plate and the connecting screw together; a lifting shaft screw hole is provided in the middle of the upper part of the lifting shaft, and a transition plate with a transition plate through hole in the center is placed on the upper gear plate, the inner diameter of the transition plate through hole, the outer diameter of the gasket and the outer diameter of the fixing screw are all larger than the inner diameter of the center hole of the upper gear plate, the inner diameter of the transition plate through hole is slightly larger than the outer diameter of the gasket and the fixing screw, the fixing screw arranged in the transition plate through hole passes through the gasket from top to bottom and is screwed into the lifting shaft screw hole, so that the lifting shaft can only be pressed vertically in the transition plate through hole when moving up and down; a polyhedral prism is provided on the transition plate, and a pressure block is provided on the polyhedral prism, and the polyhedral prism is used for gear plate indexing accuracy detection; the transition plate, the upper gear plate, the polyhedral prism and the pressure block are a whole; the transition plate is connected to the upper gear plate through the upper gear plate screw.

2. The high-precision indexing accuracy detection structure for the locking device toothed disc according to claim 1 is characterized in that: The wing plate of the lifting shaft is arranged between the upper gear plate and the lower gear plate, and the diameter of the wing plate of the lifting shaft is larger than the inner diameter of the upper gear plate center hole of the upper gear plate and the inner diameter of the lower gear plate center hole of the lower gear plate, that is, the middle bottom of the upper gear plate is arranged on the wing plate of the lifting shaft, and the lifting shaft supports the upper gear plate.

3. A detection method for realizing a high-precision indexing accuracy detection structure of a locking device toothed disc according to claim 1 or 2, characterized in that: The following steps are involved: S1. First, place the lifting base on the workbench. The lifting base is in the descending state. The outer circle of the bottom surface of the lifting base that contacts the workbench is glued with 502 glue to ensure that the lifting base will not move easily. Place the detection base on the lifting base, and connect the connecting screws through the detection base center through hole of the detection base and the lifting base screw hole in the center of the lifting base. Similarly, the outer circle of the bottom surface of the detection base that contacts the lifting base is glued and fixed with 502 glue. S2. Place the lower gear disc on the detection base, pass the positioning pin through the lower gear disc through hole on the side ear of the lower gear disc and the detection base side through hole of the detection base, fix the lower gear disc on the detection base, and pass the lifting shaft with a "T"-shaped cross section from top to bottom through the upper gear disc center hole of the upper gear disc and the lower gear disc center hole of the lower gear disc, and then screw into the connecting screw hole of the connecting screw, connect the upper gear disc, the lower gear disc and the connecting screw together, place the upper gear disc on the lower gear disc, ensure that the upper gear disc and the lower gear disc are meshed with each other, and the upper part of the lifting shaft passes through the upper gear disc center hole of the upper gear disc, and the middle bottom of the upper gear disc is set on the wing plate of the lifting shaft, and the lifting shaft supports the upper gear disc; S3, the fixing screw passes through the gasket downward and is screwed into the screw hole of the lifting shaft, the lifting shaft is fixed with the fixing screw and the gasket, the transition plate is fixed to the upper gear plate through the upper gear plate screw, and the polyhedral prism and the pressure block are placed on the transition plate; S4. Place the light tube on the edge of the workbench through the support tube, align the light tube with the polyhedron, and adjust the position of the light tube so that the two cross-line images are aligned; Take the lower position where the upper gear plate and the lower gear plate are in meshing as the starting position, aim the light tube at the first face of the polyhedron, and record the reading C1 of the 99 digital display autocollimator; S5. Control the lifting base to raise the upper gear disc: manually turn the handle of the lifting base clockwise, the handle drives the eccentric shaft to rotate horizontally, the eccentric shaft drives the main shaft to rise through the outer ring, the main shaft drives the lifting shaft to rise through the connecting screw, the lifting shaft pushes the upper gear disc to rise, so that the upper gear disc is separated from the lower gear disc; S6. Rotate the polyhedron to the next prism face in turn, with a rotation angle of 30°. At this time, the upper gear plate and the transition plate rotate together with the polyhedron. Record once every rotation. Continue to the 10th face and record the corresponding readings of each angle of the 99 digital display autocollimator C n ; S7. The specific value of the division accuracy is calculated using the conventional formula.

4. The detection method for realizing a high-precision indexing accuracy detection structure of a locking device toothed disc according to claim 3, characterized in that: The required range of the division accuracy is ≤5″.

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