A high-precision angular measurement error detection device for an optoelectronic autocollimator

Abstract

The present invention belongs to the field of photoelectric autocollimators, and discloses a high-precision angular measurement error detection device for a photoelectric autocollimator, comprising: a workbench, a glass plate and a synchronization component; and an autocollimator is fixed to the upper end of the mounting seat, a first multi-prism and a second multi-prism are respectively disposed through the centers of two mounting holes, and a synchronization component is disposed at the bottoms of the two multi-prisms; and a movable seat is slidably connected to the upper end of the support frame, a threaded rod passing through the support frame and a through hole is disposed inside the support frame, and an image receiver is engaged inside the fixed groove, a photoelectric shaft angle encoder is electrically connected to the lower end of the image receiver, and a glass plate is inserted inside the mounting groove. By providing two multi-prisms, the light beams emitted by the autocollimator are reflected onto the same glass plate by the two multi-prisms. The operator can judge the coaxiality of the two sets of light beams by observing whether the two light spots on the glass plate coincide, and thus can visually observe whether the two sets of lenses are displaced.

Description

Technical Field

[0001] The present disclosure belongs to the field of optoelectronic autocollimators, and particularly relates to a high-precision angular error detection device for an optoelectronic autocollimator. Background Art

[0002] The double-headed optoelectronic autocollimator is a high-precision measuring device. Through software for digital filtering and CCD image processing, it realizes fast two-dimensional measurement in two directions and can be applied to the measurement of double-base parallelism.

[0003] The optoelectronic shaft angle encoder, also known as the optoelectronic angular position sensor, is a precision digital angle measuring device integrating optics, mechanics, and electronics. It uses a high-precision metrological circular grating as the detection element and converts the angular position information into digital codes through optoelectronic conversion.

[0004] However, for a high-precision encoder detection device with the application number CN202223467453.4, when detecting the double-headed optoelectronic autocollimator, it is necessary to separately detect the angular errors of the two light sources. When the angular errors of both sides of the lens are within the error range, due to the opposite deflection directions of the two beams, the coaxiality error of the beams emitted by the two groups of lenses increases and is not easily detected. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present disclosure is to provide a high-precision angular error detection device for an optoelectronic autocollimator, which solves the problem that in the prior art, due to the different directions of the angular errors between the two groups of lenses, the coaxiality error between the two groups of lenses is relatively large and is not easily detected.

[0006] The purpose of the present disclosure can be achieved through the following technical solutions:

[0007] A high-precision angular error detection device for an optoelectronic autocollimator includes: a workbench, a glass plate, and a synchronization component;

[0008] Two mounting holes are penetrated through the upper end of the workbench, and a mounting seat is provided between the two mounting holes. A self-collimator is fixed to the upper end of the mounting seat, and laser emitting heads are arranged on both sides of the self-collimator. A first multi-prism and a second multi-prism are respectively penetrated through the centers of the two mounting holes. The first multi-prism is on the left side of the self-collimator, and the second multi-prism is on the right side of the self-collimator. Synchronization components are arranged at the bottoms of the first multi-prism and the second multi-prism;

[0009] A support frame is fixed to the side wall of the workbench, and a movable seat is slidably connected to the upper end of the support frame. A through hole is provided through the outer wall of the movable seat. A threaded rod passing through the support frame and the through hole is provided inside the support frame, and a thread groove matching the thread on the threaded rod is provided inside the through hole. When the threaded rod is rotated, the movable seat can be driven to move along the threaded rod. A through groove is provided through the upper end surface of the support frame, and an installation groove is provided on the upper end surface of the movable seat. Fixing grooves are fixed on both sides of the installation groove, and an image receiver is clamped inside the fixing groove. A photoelectric shaft angle encoder is electrically connected to the lower end of the image receiver, and a glass plate is inserted into the installation groove;

[0010] Support columns are fixed to the lower end surfaces of the first prism and the second prism, and a limiting groove is provided on the outer wall of the support column. The synchronization component includes a driving gear, a driven gear, a first synchronous belt, and a second synchronous belt. The first synchronous belt is wound around the outside of the first prism corresponding to the limiting groove, and the driving gear is wound at one end of the first synchronous belt away from the first prism. The driving gear is meshed with the driven gear on the outside, and a second synchronous belt is provided between the driven gear and the second prism.

[0011] In some disclosures, a servo motor is provided on the upper end of the workbench, and the output end of the servo motor is connected to the driving gear.

[0012] In some disclosures, a rotating seat is provided between the first prism, the second prism and their corresponding mounting holes respectively.

[0013] In some disclosures, a bottom cover is clamped at the lower end of the mounting seat, and a movable groove is provided on the upper end of the bottom cover, and the reset component is located at the upper end of the movable groove.

[0014] In some disclosures, the reset component includes a threaded column, a small gear, a rack, a nut seat and a support rod. The rack is meshed with the outside of the driven gear. One end of the rack away from the driven gear is meshed with the small gear, and a threaded column is coaxially fixed to the outside of the small gear. The threaded column is threadedly connected to the nut seat, and support rods are fixed to both ends of the nut seat. A retaining groove is provided at one end of the support rod away from the nut seat.

[0015] In some disclosures, a limiting frame parallel to the side wall of the rack is provided through the inside of the rack, and a limiting column is slidably connected to the inside of the limiting frame.

[0016] In some disclosures, a fixing protrusion is fixed to the bottom end of the support column, and the retaining groove has the same structure as the fixing protrusion.

[0017] In some disclosures, a buckle is hinged to one end of the fixing groove away from the movable seat, a clamping groove protrusion is fixed to the side wall of the fixing groove, and the position of the buckle is adapted to that of the clamping groove protrusion.

[0018] The explanations of the nouns, conjunctions or adjectives involved in the above technical solutions are as follows:

[0019] Fixed connection means that after the parts or components are fixed, there is no relative movement between them;

[0020] Rotational connection means that the connection between parts allows the parts to rotate relative to each other;

[0021] Threaded connection is a detachable fixed connection, which has the advantages of simple structure, reliable connection, convenient installation and disassembly, and is widely used in the fields of mechanical engineering and connection structures;

[0022] Sliding connection means that the connection between parts allows the parts to slide relative to each other.

[0023] Advantages of the present disclosure:

[0024] By providing two multi-prisms, the light beams emitted by the autocollimator are reflected onto the same glass plate through the two multi-prisms. The operator can judge the coaxiality of the two sets of light beams by observing whether the two light spots on the glass plate coincide, and thus can observe whether the two sets of lenses are offset by the naked eye. At the same time, the two multi-prisms can be driven to rotate in opposite directions simultaneously through the synchronization component. By continuously replacing the multi-prisms, the detection error can be reduced. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is the overall structural schematic diagram of the embodiment of the present disclosure;

[0027] Figure 2 is the exploded structural schematic diagram between the bottom covers of the workbench of the embodiment of the present disclosure;

[0028] Figure 3 is the overall structural schematic diagram of removing the workbench of the embodiment of the present disclosure;;

[0029] Figure 4 is the overall structural schematic diagram of the synchronization component of the embodiment of the present disclosure;

[0030] Figure 5 is the top view schematic diagram of the synchronization component of the embodiment of the present disclosure;

[0031] Figure 6 is the exploded structural schematic diagram of the movable seat and the glass plate of the embodiment of the present disclosure;

[0032] Figure 7 is a schematic diagram of the overall structure of the movable seat according to an embodiment of the present disclosure;

[0033] Figure 8 is a schematic diagram of the overall structure of the multi - prism according to an embodiment of the present disclosure.

[0034] In the figure: 1, workbench; 101, mounting seat; 102, mounting hole; 2, autocollimator; 21, laser emitting head; 301, first multi - prism; 302, second multi - prism; 31, support column; 32, limiting groove; 33, fixing protrusion; 34, rotating seat; 4, movable seat; 41, through - hole; 42, fixing groove; 43, mounting groove; 421, buckle; 4211, clamping groove protrusion; 5, image receiver; 51, photoelectric shaft angle encoder; 6, glass plate; 7, support frame; 71, through - slot; 72, threaded rod; 8, bottom cover; 81, movable groove; 9, driving gear; 91, servo motor; 10, driven gear; 11, first synchronous belt; 12, second synchronous belt; 13, threaded column; 131, pinion gear; 14, rack; 141, limiting frame; 142, limiting column; 15, nut seat; 16, support rod; 161, blocking groove. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present disclosure.

[0036] According to the concept of the present application, an embodiment of a high - precision angular error detection device for an optoelectronic autocollimator is described herein in conjunction with Figures 1 to 8 to describe an embodiment of a high - precision angular error detection device for an optoelectronic autocollimator. Specifically, the high - precision angular error detection device for an optoelectronic autocollimator is configured as a split - type structure, which has three components: a workbench 1, a synchronization component, and a glass plate 6. By setting two multi - prisms, the light beams emitted by the autocollimator 2 are reflected onto the same glass plate 6 through the two multi - prisms. The operator can judge the coaxiality of the two sets of light beams by observing whether the two light spots on the glass plate 6 coincide, that is, whether the two sets of lenses are offset by visual inspection. At the same time, through the synchronization component, the two multi - prisms can be driven to rotate in opposite directions simultaneously. By continuously changing the angles of the multi - prisms, the detection error can be reduced.

[0037] A high - precision angular error detection device for an optoelectronic autocollimator, comprising: a workbench 1, a glass plate 6, and a synchronization component;

[0038] Two mounting holes 102 are formed through the upper end of the workbench 1, and a mounting base 101 is formed between the two mounting holes 102. A collimator 2 is fixed to the upper end of the mounting base 101, and laser emitting heads 21 are arranged on both sides of the collimator 2. A first prism 301 and a second prism 302 are respectively arranged through the centers of the two mounting holes 102. The first prism 301 is on the left side of the collimator 2, and the second prism 302 is on the right side of the collimator 2. Synchronization components are arranged at the bottoms of the first prism 301 and the second prism 302;

[0039] A support frame 7 is fixed to the side wall of the workbench 1, and a movable seat 4 is slidably connected to the upper end of the support frame 7. A through hole 41 is formed through the outer wall of the movable seat 4. A threaded rod 72 passing through the support frame 7 and the through hole 41 is arranged inside the support frame 7, and a thread groove matching the thread on the threaded rod 72 is arranged inside the through hole 41. When the threaded rod 72 is rotated, the movable seat 4 can be driven to move along the threaded rod 72. A through slot 71 is formed through the upper end surface of the support frame 7, and a mounting slot 43 is arranged on the upper end surface of the movable seat 4. Fixed slots 42 are fixed to both sides of the mounting slot 43, and an image receiver 5 is clamped inside the fixed slots 42. A photoelectric shaft angle encoder 51 is electrically connected to the lower end of the image receiver 5, and a glass plate 6 is inserted into the mounting slot 43.

[0040] The bottom of the collimator 2 is inserted into the upper end of the mounting base 101, and bolts pass through the bottom of the collimator 2 and the workbench 1. At the same time, the first prism 301 and the second prism 302 are respectively coaxially inserted into the workbench 1 through the corresponding mounting holes 102, so that the collimator 2 and the two prisms can be fixed to the workbench 1. At this time, the laser emitting heads 21 at both ends of the collimator 2 respectively face the first prism 301 and the second prism 302. Since the positions of the mounting base 101 and the mounting holes 102 are fixed, the collimator 2 and the prisms can be installed at the same position during each measurement, avoiding the need for correction during each installation, making the laser emitting heads 21 and the two prisms on the same horizontal plane. At the same time, the two prisms can be driven to rotate in opposite directions simultaneously through the synchronization components at the bottoms.

[0041] The bottom of the glass plate 6 is inserted into the installation groove 43 at the center of the upper end of the movable seat 4. At the same time, the groove wall of the installation groove 43 is perpendicular to the upper end surface of the movable seat 4, and the installation groove 43 is perpendicular to the central axis of the autocollimator 2. So that when the glass plate 6 is inserted into the installation groove 43, it can be located in the middle of the autocollimator 2. The movable seat 4 is located at the upper end of the support frame 7, and the movement path of the movable seat 4 is the same as the path of the through groove 71. At the same time, the threaded rod 72 passes through the support frame 7 and the through hole 41, and a thread groove matching the thread on the threaded rod 72 is provided inside the through hole 41. When the threaded rod 72 is rotated, the movable seat 4 can be driven to move along the threaded rod 72. By the threaded rod 72, the circumferential restriction of the movable seat 4 can be carried out, and the movable seat 4 can also be moved, thereby facilitating the operator to adjust the position of the movable seat 4, so that the beam emitted by the laser emitting head 21 irradiates on the glass plate 6. And when the operator rotates the threaded rod 72 and drives the movable seat 4 to move through the thread at the same time, since the threaded rod 72 passes through the through hole 41, it can prevent it from rotating circumferentially along the central axis of the movable seat 4, and the movable seat 4 can keep the direction of the glass plate 6 while moving, and the glass plate 6 can be prevented from shifting, which is beneficial to improving the movement stability of the movable seat 4. And the image receiver 5 is inserted into the upper end of the movable seat 4 along the fixed groove 42. At this time, the long side of the image receiver 5 is perpendicular to the long side of the glass plate 6, thereby increasing the area of the receiving surface of the image receiver 5. When the angles of the two prisms change, the change path of the light can be fully reflected on the image receiver 5 without changing the position of the image receiver 5.

[0042] Support columns 31 are fixed to the lower end faces of the first multi-prism 301 and the second multi-prism 302, and limiting grooves 32 are formed on the outer walls of the support columns 31. The synchronization assembly includes a driving gear 9, a driven gear 10, a first synchronous belt 11 and a second synchronous belt 12. The first synchronous belt 11 is wound around the outside of the first multi-prism 301 corresponding to the limiting groove 32, and one end of the first synchronous belt 11 away from the first multi-prism 301 is wound around the driving gear 9. The outside of the driving gear 9 is engaged with the driven gear 10, and a second synchronous belt 12 is provided between the driven gear 10 and the second multi-prism 302. A servo motor 91 is arranged on the upper end of the workbench 1, and the output end of the servo motor 91 is connected to the driving gear 9. The output end of the servo motor 91 passes through the workbench 1 and is connected to the driving gear 9, so as to drive the driving gear 9 to rotate. Since the driving gear 9 is engaged with the driven gear 10, the driven gear 10 can be driven to rotate in the opposite direction to the driving gear 9. At the same time, the driving gear 9 is connected to the first multi-prism 301 through the first synchronous belt 11 below, and the driven gear 10 is connected to the second multi-prism 302 through the second synchronous belt 12, so that the first multi-prism 301 rotates in the same direction as the driving gear 9, and the second multi-prism 302 rotates in the same direction as the driven gear 10. When the servo motor 91 rotates, the driving gear 9 and the driven gear 10 can be driven to be engaged, and the two multi-prisms can be respectively driven to rotate synchronously through the first synchronous belt 11 and the second synchronous belt 12. When the light beam emitted by the laser emitting head 21 is irradiated on different surfaces of the two multi-prisms through rotation, the two multi-prisms can rotate synchronously at the same time, so that the two light beams can always be in a symmetrical state, and the two light beams can be kept in a symmetrical state when irradiated on the glass plate 6, without specifically adjusting the angle, which is beneficial to saving the time of the operator.

[0043] Rotating seats 34 are arranged between the first multi-prism 301, the second multi-prism 302 and their corresponding mounting holes 102. The support columns 31 of the two multi-prisms are inserted into the rotating seats 34, and the support columns 31 and the rotating seats 34 are simultaneously inserted into the mounting holes 102. Since the upper end of the rotating seat 34 protrudes from the workbench 1, and the lower sides of the two multi-prisms are respectively attached to the upper end surfaces of the corresponding rotating seats 34, the corresponding multi-prisms can be lifted, so that the two multi-prisms are parallel to the laser emitting head 21, and the light beam can be irradiated on the mirror surfaces of the first multi-prism 301 and the second multi-prism 302 respectively.

[0044] The lower end of the mounting base 101 is engaged with the bottom cover 8. The edge of the bottom cover 8 is fitted with the inner wall of the workbench 1, enabling the bottom cover 8 to be snapped under the workbench 1, providing support for the workbench 1. And because the edges of the two are in mutual contact, the interior of the workbench 1 can be kept sealed, thereby protecting the internal synchronization components and reset components, preventing the synchronization components and reset components from shifting after being impacted. Moreover, an activity groove 81 is provided at the upper end of the bottom cover 8. The bottom end of the support column 31 is fixed with a fixed protrusion 33, and the fixed protrusion 33 is located in the activity groove 81. Since the bottom end of the support column 31 is aligned with the upper end face of the bottom cover 8, and the protruding part of the fixed protrusion 33 is inserted into the activity groove 81, the fixed protrusion 33 can move in the activity groove 81, avoiding interference with the bottom cover 8. And the reset component is located at the upper end of the activity groove 81, and the position of the reset component is restricted by the activity groove 81.

[0045] The reset component includes a threaded column 13, a small gear 131, a rack 14, a nut seat 15, and a support rod 16. And a rack 14 is meshed with the outside of the driven gear 10. One end of the rack 14 away from the driven gear 10 is meshed with a small gear 131. And a threaded column 13 is coaxially fixed to the outside of the small gear 131. A nut seat 15 is threadedly connected to the outside of the threaded column 13. And support rods 16 are fixed to both ends of the nut seat 15. And a retaining groove 161 is provided at one end of the support rod 16 away from the nut seat 15. And the retaining groove 161 has the same structure as the fixed protrusion 33. The retaining groove 161 is a semi-circular notch, and the diameter of the notch is equal to the diameter of the fixed protrusion 33. And when the fixed protrusion 33 moves,

[0046] When the servo motor 91 rotates in the reverse direction, it can drive both the driving gear 9 and the driven gear 10 to rotate in the reverse direction, drive the rack 14 to move towards the side close to the small gear 131, and at the same time drive the small gear 131 and the threaded column 13 to rotate synchronously. When the threaded column 13 rotates, it cooperates with the nut seat 15 through the thread to drive the nut seat 15 and the support rod 16 to move downward until the bottom of the nut seat 15 is in contact with the upper end of the activity groove 81. During the rotation of the two prisms, the fixed protrusions 33 at their bottoms are stuck in the retaining grooves 161 and continue to rotate until both fixed protrusions 33 are stuck in the retaining grooves 161. At this time, the two prism surfaces on the closer sides of the two prisms are parallel to each other. Thus, before detection, the directions of the prism surfaces of the two prisms can be adjusted by reversing the servo motor 91, so that the light beams reflected by the two prisms are symmetrically arranged with respect to the glass plate 6. Then the operator can perform operations on the two groups of light beams. And by the resistance of the support rod 16 and the retaining groove 161, the direction of the prism surface of the prism is forcibly changed. Compared with manual adjustment, it is beneficial to reduce the error between parallelisms. And because the fixed protrusion 33 is at the lower end of the prism, it avoids the contamination of the prism surface by the hand or the device during adjustment, which is beneficial to improving the precision of the device.

[0047] A limiting frame 141 parallel to the side wall of the rack 14 is disposed through the inner side of the rack 14, and a limiting post 142 is slidably connected to the inner side of the limiting frame 141. The limiting post 142 is inserted into the limiting frame 141. When the rack 14 moves, the movement path of the rack 14 is restricted by the limiting post 142 and the limiting frame 141, so that the two limiting posts 142 always slide along the limiting frame 141, preventing the position of the rack 14 from shifting, which is beneficial to improving the stability of the device.

[0048] A buckle 421 is hinged to one end of the fixed slot 42 away from the movable seat 4, and a card slot protrusion 4211 is fixed to the side wall of the fixed slot 42. The position of the buckle 421 is adapted to that of the card slot protrusion 4211. By inserting the bottom of the image receiver 5 along the notch at the edge of the fixed slot 42 until the side wall of the image receiver 5 contacts the outer wall of the movable seat 4, and then rotating the buckle 421 until the inner wall of the buckle 421 engages with the card slot protrusion 4211, the image receiver 5 is fixed on the fixed slot 42, thus completing the assembly.

[0049] The following further describes a high-precision angular error detection device for an optoelectronic autocollimator provided by the present invention in conjunction with the accompanying drawings and embodiments.

[0050] Before use, the support columns 31 of the first multi-prism 301 and the second multi-prism 302 are respectively inserted into the corresponding two rotating seats 34, and the rotating seats 34 are inserted into the mounting holes 102. Then, the first synchronous belt 11 is sleeved on the driving gear 9 and the limiting groove 32 on the first multi-prism 301, and the second synchronous belt 12 is sleeved on the driven gear 10 and the limiting groove 32 on the second multi-prism 302. The movable seat 4 is installed in the through groove 71. At this time, the threaded rod 72 passes through the through hole 41 on the movable seat 4. Then, the support frame 7 is installed at the center of the side wall of the workbench 1 and fixed by bolts. Then, the bottom of the autocollimator 2 is inserted into the mounting seat 101 and fixed to the workbench 1 by bolts.

[0051] During use, the servo motor 91 is started. The servo motor 91 drives the driving gear 9 to rotate counterclockwise. The driving gear 9 drives the driven gear 10 to rotate clockwise through meshing. The driven gear 10 meshes with the rack 14 and drives the rack 14 to move along the limiting post 142 towards the direction close to the pinion 131, thereby driving the threaded column 13 to rotate and driving the nut seat 15 to move downward until the bottom of the nut seat 15 fits against the upper end of the movable groove 81. When the driving gear 9 and the driven gear 10 rotate, they can respectively drive the two multi-prisms to rotate in opposite directions. While the two multi-prisms are rotating, they can drive the bottom fixed protrusions 33 to rotate around the central axes of the two multi-prisms respectively until the two fixed protrusions 33 are both stuck in the blocking grooves 161. At this time, the two fixed protrusions 33 and the support rod 16 are on the same horizontal plane.

[0052] When detecting the coaxiality of the light beams emitted by the two laser emitting heads 21, the servo motor 91 is started again. The servo motor 91 drives the driving gear 9 to rotate clockwise, causing the fixed protrusion 33 to disengage from the blocking groove 161, and drives the rack 14 to move away from the pinion 131 by rotating counterclockwise through the driven gear 10, thereby driving the threaded column 13 to rotate reversely and moving the nut seat 15 upward until the rack 14 is disengaged from the driven gear 10. As the rotating prism rotates, the autocollimator 2 is started, and its laser emitting head 21 emits a light beam horizontally outward. The light beams are respectively irradiated onto the first rotating prism 301 and the second rotating prism 302, and the light beams are reflected onto the glass plate 6 through the rotating prism. The operator observes whether the positions where the light beams are reflected onto the glass plate 6 coincide to judge the coaxiality of the two light beams. As the rotating prism rotates continuously, multiple measurements can be performed to reduce the measurement error.

[0053] When the angular error of the autocollimator 2 needs to be detected, the threaded rod 72 is rotated to make the movable seat 4 slide horizontally along the through groove 71 until the light beam emitted by the laser emitting head 21 is refracted onto the image receiver 5 and forms coordinates on the image receiver 5. The coordinates of the expected landing point are calculated through the refraction angle, and then it is observed whether the coordinates displayed on the image receiver 5 and the coordinates of the expected landing point are at the same position, so as to obtain the angular error of the autocollimator 2.

[0054] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art of this industry should understand that the present disclosure is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure will have various changes and improvements, and these changes and improvements all fall within the scope of the present disclosure claimed.

Claims

1. A high-precision angle measurement error detection device for a photoelectric autocollimator, characterized in that: include: A workbench (1), a glass plate (6) and a synchronization component; Two mounting holes (102) are provided through the upper end of the workbench (1), and a mounting seat (101) is provided between the two mounting holes (102), and an autocollimator (2) is fixed to the upper end of the mounting seat (101), and laser emission heads (21) are provided on both sides of the autocollimator (2), and a first polygonal prism (301) and a second polygonal prism (302) are provided through the center of the two mounting holes (102), respectively, the first polygonal prism (301) is provided on the left side of the autocollimator (2), and the second polygonal prism (302) is provided on the right side of the autocollimator (2), and synchronization components are provided at the bottoms of the first polygonal prism (301) and the second polygonal prism (302); A support frame (7) is fixed to the side wall of the workbench (1), and the upper end of the support frame (7) is slidably connected to a movable seat (4), the outer wall of the movable seat (4) is penetrated by a through hole (41), the inner side of the support frame (7) is provided with a threaded rod (72) penetrating the support frame (7) and the through hole (41), and the inner side of the through hole (41) is provided with a thread groove that matches the thread on the threaded rod (72), so that when the threaded rod (72) is rotated, the movable seat (4) can be driven. The support frame (7) moves along the threaded rod (72), and the upper end surface of the support frame (7) is penetrated by a through groove (71), and the upper end surface of the movable seat (4) is provided with a mounting groove (43), the two sides of the mounting groove (43) are fixed with fixing grooves (42), and the inner side of the fixing groove (42) is engaged with an image receiver (5), the lower end wire of the image receiver (5) is connected to a photoelectric shaft angle encoder (51), and the inner side of the mounting groove (43) is inserted with a glass plate (6); The lower end surfaces of the first polygonal prism (301) and the second polygonal prism (302) are both fixed with support columns (31), and the outer walls of the support columns (31) are provided with limit grooves (32); the synchronization component comprises a driving gear (9), a driven gear (10), a first synchronous belt (11) and a second synchronous belt (12); the first synchronous belt (11) is wound around the outer side of the first polygonal prism (301) corresponding to the limit groove (32), and the driving gear (9) is wound around the end of the first synchronous belt (11) away from the first polygonal prism (301); the outer side of the driving gear (9) is meshed with the driven gear (10), and the second synchronous belt (12) is arranged between the driven gear (10) and the second polygonal prism (302); The mounting groove (43) is perpendicular to the central axis of the autocollimator (2), and the image receiver (5) is inserted into the upper end of the movable seat (4) along the fixing groove (42), and at this time, the long side of the image receiver (5) is perpendicular to the long side of the glass plate (6).

2. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 1, characterized in that: A servo motor (91) is provided at the upper end of the workbench (1), and the output end of the servo motor (91) is connected to the driving gear (9).

3. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 1, characterized in that: A rotating seat (34) is provided between the first polygonal prism (301) and the second polygonal prism (302) and their corresponding mounting holes (102).

4. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 1, characterized in that: The lower end of the mounting seat (101) is engaged with a bottom cover (8), and the upper end of the bottom cover (8) is provided with a movable groove (81), and the reset component is located at the upper end of the movable groove (81).

5. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 1, characterized in that: The reset assembly comprises a threaded column (13), a pinion (131), a rack (14), a nut seat (15) and a support rod (16), wherein the outer side of the driven gear (10) is meshed with the rack (14), the end of the rack (14) away from the driven gear (10) is meshed with the pinion (131), and the outer side of the pinion (131) is coaxially fixed with a threaded column (13), the outer side of the threaded column (13) is threadedly connected with the nut seat (15), and the support rods (16) are fixed at both ends of the nut seat (15), and a retaining groove (161) is provided at the end of the support rod (16) away from the nut seat (15).

6. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 5, characterized in that: A limiting frame (141) parallel to the side wall of the rack (14) is provided through the inner side of the rack (14), and the inner side of the limiting frame (141) is slidably connected to a limiting column (142).

7. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 5, characterized in that: A fixing protrusion (33) is fixed to the bottom end of the support column (31), and the retaining groove (161) has the same structure as the fixing protrusion (33).

8. The high-precision angle measurement error detection device of a photoelectric autocollimator according to claim 1, characterized in that: A buckle (421) is hingedly connected to one end of the fixing groove (42) away from the movable seat (4), and a buckle protrusion (4211) is fixed to the side wall of the fixing groove (42), and the positions of the buckle (421) and the buckle protrusion (4211) are matched.

Images