A device for testing the machining precision of a corner cube prism
By combining a cemented prism with a laser reflection and transmission mechanism and a vertical slider, the problem of large measurement errors in angle rulers is solved, enabling high-precision detection of the corner prism and ensuring the accuracy of flatness and included angle.
Patent Information
- Application Number
- CN202423243039.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In the existing technology, the use of an angle ruler to measure a corner prism has large errors, making it difficult to accurately detect the angle and flatness between plane A19 and plane B20.
Design an inspection device that uses a glued prism with a 90° included angle, a laser emitter, a first light receiving screen, and a second light receiving screen to achieve accurate detection of the diagonal pyramid prism through laser reflection and transmission, and uses a vertical slider and a prism fixer for precise positioning.
High-precision detection of the diagonal pyramid prism was achieved, reducing measurement errors and ensuring that the angle and flatness of planes A19 and B20 meet the standards.
Smart Images
Figure CN223596821U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of prism detection, and specifically relates to a device for detecting the machining precision of an angle pyramid prism. BACKGROUND
[0002] The angle pyramid prism has a plane A19 and a plane B20, and the included angle between the plane A19 and the plane B20 is 45 degrees. The function of the angle pyramid prism is mainly to reflect the light entering the plane A19 out through the plane B20, so that the light entering the angle pyramid prism forms offset light after reflection, and the light entering the angle pyramid prism and the light emitted from the angle pyramid prism are mutually parallel and not collinear and are opposite in direction. Therefore, when the angle pyramid prism is machined, the machining of the plane A19 and the plane B20 is the main requirement. After machining, it is necessary to detect the flatness of the plane A19 and the plane B20 on the angle pyramid prism and whether the included angle between the plane A19 and the plane B20 is accurate. The conventional detection method is to use an angle ruler to measure, but this method has relatively large error and is related to the accuracy of the angle ruler. Therefore, another measuring device needs to be designed to measure and detect the angle pyramid prism. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the application is to solve the problem of large error caused by the use of angle measuring tools to measure the angle pyramid prism by adopting the method of using a glued prism with an included angle of 90 degrees between two planes, a laser emitter, a first light receiving screen, a second light receiving screen, and a vertical slider with a prism fixer, so that the light emitted by the laser emitter has a standard position after being reflected by the glued prism, and then the light emitted by the laser emitter after penetrating the glued prism is reflected by the angle pyramid prism and projected onto the light spots of the first light receiving screen and the second light receiving screen to detect the angle pyramid prism.
[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme:
[0005] The utility model provides a kind of device for checking the precision of processing of corner cube prism, including frame body, laser emitter, glued prism, first light receiving screen, second light receiving screen are equipped on the frame body, the upper section of the glued prism is provided with first plane, lower section is provided with second plane, the included angle between the first plane and second plane is 90 °, the included angle between the light emitted by the light emitter and the first plane and second plane is 45 °, the projection of the first plane and second plane on the front side wall of the frame body is all line segment, the light emitted by the laser emitter is parallel with the front side wall of the frame body, the laser emitter is located in the left side of the glued prism, the included angle between the first plane and second plane opens to left, the first light receiving screen is located in the left side of the glued prism, the second light receiving screen is located directly below glued prism, the light emitted by the laser emitter can be irradiated on the first plane, the projection of the second plane on the left side wall of the frame body is located in the projection of the first light receiving screen on the left side wall of the frame body, the projection of the first plane on the bottom wall of the frame body is located in the projection of the second plane on the bottom wall of the frame body, the projection of the second plane on the bottom wall of the frame body is located in the projection of the second light receiving screen on the bottom wall of the frame body, cavity is equipped between the front side wall and rear side wall of the frame body in the right side of the glued prism, vertical slider is equipped in the cavity on the frame body, prism fixer is equipped on the vertical slider.
[0006] Preferably, the vertical slider includes a lead screw, a sliding groove, and a sliding block. The sliding groove is vertically arranged on the frame body. The sliding block is slidably arranged in the sliding groove. The lead screw is rotatably arranged on the frame body and is parallel to the length of the sliding groove. A first threaded hole is arranged on the sliding block and is threadedly connected with both ends of the lead screw. A driver is arranged on the frame body to drive the rotation of the lead screw. The prism fixer is arranged on the sliding block.
[0007] Preferably, one sliding groove is arranged on the front side wall and the rear side wall of the frame body respectively. One sliding block is arranged in each sliding groove. One lead screw is arranged on the front side wall and the rear side wall of the frame body respectively. Each lead screw threadedly connects with one sliding block. The prism fixer is arranged on the facing side between the two sliding blocks.
[0008] Preferably, the driver includes a worm and a driving disc. The worm is arranged below the two sliding grooves on the frame body. Both ends of the worm are rotatably connected with the front side wall and the rear side wall of the frame body respectively. A worm wheel is arranged on the lower end of each lead screw to cooperate with the worm. The worm is coaxially arranged with the driving disc outside the frame body. A second threaded hole is axially arranged on the driving disc away from the center of the driving disc. The two ends of a first bolt are threadedly connected with the second threaded hole.
[0009] Preferably, the fixer comprises extrusion plates and second bolts, one of the screw holes is provided on each of the sliders, the axis of the screw hole is perpendicular to the front side wall of the frame body, each of the screw holes is threadedly connected between two ends of the second bolt, and the opposite ends of the two second bolts are each rotationally connected with one of the extrusion plates.
[0010] Preferably, the driver is a servo motor, the servo motor is fixedly arranged on the front side wall of the frame body, and the output end of the servo motor is drivingly connected with the lead screw.
[0011] Compared with the prior art, the application has the following beneficial effects:
[0012] The application adopts the mode of two planar cemented prisms with an included angle of 90°, a laser emitter, a first light receiving screen, a second light receiving screen and a vertical slider with a prism fixer to design a device for testing the machining precision of corner cube prisms, so that the light emitted by the laser emitter has a standard position after being reflected by the cemented prisms, and then the light reflected by the corner cube prisms after penetrating the cemented prisms is projected to the light spots of the first light receiving screen and the second light receiving screen to test the corner cube prisms, thereby solving the problem of large error caused by the angle measuring tool for measuring the corner cube prisms. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The structure schematic diagram of the first embodiment of the driver in the application is shown in the figure.
[0014] Figure 2 The structure schematic diagram of the second embodiment of the driver in the application is shown in the figure. Figure 1 The enlarged view of A in the figure.
[0015] Figure 3 The enlarged view of B in the figure. Figure 1 The enlarged view of B in the figure.
[0016] Figure 4 The schematic diagram of the prism fixer fixing the corner cube prisms in the figure. Figure 1 The schematic diagram of the prism fixer fixing the corner cube prisms in the figure.
[0017] Figure 5 The schematic diagram of the relationship between the worm, the worm wheel and the lead screw in the application is shown in the figure.
[0018] Figure 6 The relationship diagram between the lead screw, the slider and the extrusion plate in the application is shown in the figure.
[0019] Figure 7 The principle diagram of the application is shown in the figure.
[0020] Figure 8 The structure schematic diagram of the second embodiment of the driver in the application is shown in the figure.
[0021] Wherein, 1, frame body; 2, laser emitter; 3, glued prism; 4, first light receiving screen; 5, second light receiving screen; 6, first plane; 7, second plane; 8, screw rod; 9, sliding groove; 10, sliding block; 11, worm; 12, driving disc; 13, worm wheel; 14, handle; 15, extrusion plate; 16, bolt; 17, servo motor. DETAILED DESCRIPTION
[0022] Reference Figures 1-8 A device for testing the processing precision of corner cube prisms, comprising a frame body 1, wherein the frame body 1 is provided with a laser emitter 2, a glued prism 3, a first light receiving screen 4 and a second light receiving screen 5, an upper section of the glued prism 3 is provided with a first plane 6, a lower section of the glued prism 3 is provided with a second plane 7, an included angle between the first plane 6 and the second plane 7 is 90°, an included angle between the light emitted by the laser emitter 2 and the first plane 6 and the second plane 7 is 45°, projections of the first plane 6 and the second plane 7 on a front side wall of the frame body 1 are both line segments, the light emitted by the laser emitter 2 is parallel to the front side wall of the frame body 1, the laser emitter 2 is located at the left side of the glued prism 3, the opening of the included angle between the first plane 6 and the second plane 7 is to the left, the first light receiving screen 4 is located at the left side of the glued prism 3, the second light receiving screen 5 is located directly below the glued prism 3, the light emitted by the laser emitter 2 can irradiate on the first plane 6, the projection of the second plane 7 on the left side wall of the frame body 1 is located within the projection of the first light receiving screen 4 on the left side wall of the frame body 1, the projection of the first plane 6 on the bottom wall of the frame body 1 is located within the projection of the second plane 7 on the bottom wall of the frame body 1, the projection of the second plane 7 on the bottom wall of the frame body 1 is located within the projection of the second light receiving screen 5 on the bottom wall of the frame body 1, a cavity is provided between the front side wall and the rear side wall of the frame body 1 at the right side of the glued prism 3, a vertical slider is provided in the cavity on the frame body 1, and a prism fixer is provided on the vertical slider.
[0023] In the embodiment, when in use, the corner cube prism 18 is fixed by the prism fixer, and the plane A 19 and the plane B 20 on the corner cube prism 18 are respectively parallel to the first plane 6 and the second plane 7 on the glued prism 3, then the laser emitter 2 is turned on, and the light emitted by the laser emitter 2 is reflected by the first plane 6 and the second plane 7 to the first light receiving screen 4 and the second light receiving screen 5, so that the processing precision of the corner cube prism 18 can be tested. Figure 7As shown, the laser a emitted by the laser emitter 2 is divided into laser b and laser c after passing through the first plane 6, wherein the laser b penetrates the second plane 7 after being reflected by the first plane 6 and enters the N point on the second light receiving screen 5, at the same time, the laser b enters the P point on the first light receiving screen 5 after being reflected by the second plane 7, and the laser c enters the plane A on the corner cube prism 18 after penetrating the first plane 6, and enters the Q point on the first light receiving screen 4 and the M point on the second light receiving screen 5 after being reflected by the plane A and the plane B. During the whole process, if the corner cube prism 18 moves along the Z direction (whether +Z or -Z), the light spot of the P point on the first light receiving screen 4 and the light spot of the N point on the second light receiving screen 5 will not move. During the detection, the corner cube prism 18 is moved to +Z or -Z direction by the vertical slider, at this time, since the position of the laser c on the plane A will move with the movement of the corner cube prism 18. If the flatness of the plane A or the flatness of the plane B is not enough, the light spot of the Q point on the first light receiving screen 4 will move relative to the P point (the movement of Q relative to P can also be observed by naked eye); the light spot of the M point on the second light receiving screen 5 will move relative to the light spot of the N point (the movement of M relative to N can also be observed by naked eye); if the flatness of the plane A and the flatness of the plane B are enough, no matter how far the corner cube prism 18 moves in the Z direction, Q will not move relative to P, and M will not move relative to N. In this way, whether the corner cube prism 18 meets the standard can be detected.
[0024] As a preferred mode, the vertical slider comprises a lead screw 8, a sliding groove 9, and a sliding block 10, the sliding groove 9 is vertically arranged on the frame body 1, the sliding block 10 is slidingly arranged in the sliding groove 9, the lead screw 8 is rotationally arranged on the frame body 1 and is parallel to the length line of the sliding groove 9, the first threaded hole is arranged on the sliding block 10 and is threadedly connected with both ends of the lead screw 8, the driver is arranged on the frame body 1 and drives the rotation of the lead screw 8, and the prism fixer is arranged on the sliding block 10. After the arrangement, the rotation of the lead screw 8 is driven by the driver, the sliding block 10 moves in the sliding groove 9 during the rotation of the lead screw 18, the moving direction of the sliding block 10 is the Z direction in the frame body 1, and the corner cube prism 18 is fixed on the sliding block 10 by the prism fixer, so that the corner cube prism 18 moves with the sliding block 10, thereby enabling the corner cube prism 18 to slowly move in the Z direction during the detection and the changes of Q relative to P and M relative to N to be observed. Figure 7
[0025] As a preferred embodiment, the frame 1 has a groove 9 on both its front and rear side walls, with a slider 10 disposed within each groove 9. A lead screw 8 is also provided on both the front and rear side walls of the frame 1, with each lead screw 8 threadedly connected to a slider 10. A prism retainer is provided on the facing surface of each pair of sliders 10. This arrangement of two sliders 10 utilizes two prism retainers when fixing the corner cube prism 18, thus ensuring uniform force distribution on the corner cube prism 18.
[0026] The driver has two design options:
[0027] In method one, the actuator includes a worm gear 11 and a drive disk 12. The worm gear 11 is mounted on the frame 1 below the two sliding grooves 9. The two ends of the worm gear 11 are rotatably connected to the front and rear side walls of the frame 1, respectively. Each lead screw 8 has a worm wheel 13 at its lower end that engages with the worm gear 11. One end of the worm gear 11 is coaxially mounted on the drive disk 12 outside the frame 1. A second threaded hole is axially penetrating the drive disk 12 away from the center. The two ends of the first bolt 14 are threadedly connected to the second threaded hole. With this configuration, during use, the user rotates the drive disk 12, which in turn drives the worm gear 11. The rotation of the worm gear 11 simultaneously drives the worm wheels 13 on both lead screws 8, causing the two lead screws 8 to rotate synchronously. This ensures that the two sides of the corner cube prism 18 move synchronously during movement. After the drive disk 12 rotates to the preset position, it can be fixed by screwing the first bolt 14 into the second threaded hole and then abutting against the side wall of the frame 1.
[0028] In a preferred embodiment, the retainer includes a clamping plate 15 and a second bolt 16. Each slider 10 has a through-hole, the axis of which is perpendicular to the front sidewall of the frame 1. Each screw hole is threaded between the two ends of a second bolt 16, and each of the two opposing ends of the second bolts 16 is rotatably connected to a clamping plate 15. With this configuration, when fixing the corner cube prism 18, the rotation of the second bolt 16 causes the two clamping plates 15 to work together to clamp the corner cube prism 18, thereby fixing the corner cube prism 18 in place.
[0029] Method 2, such as Figure 8 As shown, the driver is a servo motor 17, which is fixedly mounted on the front side wall of the frame 1. The output end of the servo motor 17 is connected to the lead screw 8. In this way, the servo motor 17 can automatically control the movement of the corner cube prism 18. In this method, the prism holder can use a suction cup mounted on the slider 10 to hold the corner cube prism 18 in place.
Claims
1. A device for checking the machining accuracy of a corner cube prism, characterized in that The utility model provides a kind of laser collimator, including frame (1), laser emitter (2) are equipped on the frame (1), cemented prism (3), first light receiving screen (4), second light receiving screen (5), the upper section of the cemented prism (3) is provided with first plane (6), lower section is provided with second plane (7), the included angle between first plane (6) and second plane (7) is 90 °, the included angle of the light emitted by laser emitter (2) and first plane (6) and second plane (7) is 45 °, the projection of first plane (6) and second plane (7) on the front side wall of the frame (1) is all line segment, the light emitted by laser emitter (2) is parallel with the front side wall of the frame (1), laser emitter (2) is located in the left side of the cemented prism (3), the included angle between first plane (6) and second plane (7) is opened to left, first light receiving screen (4) is located in the left side of the cemented prism (3), second light receiving screen (5) is located directly below cemented prism (3), the light emitted by laser emitter (2) can be irradiated on first plane (6), the projection of second plane (7) on the left side wall of the frame (1) is located in the projection of first light receiving screen (4) on the left side wall of the frame (1), the projection of first plane (6) on the bottom wall of the frame (1) is located in the projection of second plane (7) on the bottom wall of the frame (1), the projection of second plane (7) on the bottom wall of the frame (1) is located in the projection of second light receiving screen (5) on the bottom wall of the frame (1), the cavity is equipped between the front side wall and rear side wall of the frame (1) in the right side of the cemented prism (3), vertical slider is equipped in the cavity on the frame (1), prism fixer is equipped on the vertical slider.
2. The device for testing the processing precision of the corner cube prism according to claim 1, characterized in that, The vertical slider includes screw rod (8), sliding slot (9), sliding block (10), the sliding slot (9) is vertically arranged on the frame (1), the sliding block (10) is slidably arranged in the sliding slot (9), the screw rod (8) is rotatably arranged on the frame (1), the screw rod (8) is parallel to the length line of the sliding slot (9), the first threaded hole that is threadedly connected between the both ends of the screw rod (8) is arranged on the sliding block (10), the driver that drives the rotation of the screw rod (8) is arranged on the frame (1), and the prism fixer is arranged on the sliding block (10).
3. The device for checking the processing precision of the corner cube prism according to claim 2, characterized in that, One sliding slot (9) is arranged on the front side wall and rear side wall of the frame (1) respectively, one sliding block (10) is arranged in each sliding slot (9), one screw rod (8) is arranged on the front side wall and rear side wall of the frame (1) respectively, and each screw rod (8) is threadedly connected with one sliding block (10) correspondingly, the prism fixer is arranged on the face of the two sliding blocks (10) that faces each other.
4. The device for checking the processing precision of the corner cube prism according to claim 3, characterized in that, The driver comprises a worm (11) and a driving disc (12), the worm (11) is arranged below the two sliding grooves (9) on the frame (1), the two ends of the worm (11) are rotationally connected with the front side wall and the rear side wall of the frame (1) respectively, the lower end of each screw rod (8) is provided with a worm wheel (13) matched with the worm (11), one end of the worm (11) is coaxially arranged with the driving disc (12) outside the frame (1), a second threaded hole is axially and penetratingly arranged on the driving disc (12) away from the center, and the two ends of a first bolt (14) are threadedly connected with the second threaded hole.
5. The device for checking the processing precision of the corner cube prism according to claim 3, characterized in that, The fixer comprises an extrusion plate (15) and a second bolt (16), each sliding block (10) is provided with a threaded hole penetratingly arranged thereon, the axis of the threaded hole is perpendicular to the front side wall of the frame (1), the two ends of each second bolt (16) are threadedly connected with each threaded hole, and the opposite ends of the two second bolts (16) are rotationally connected with the extrusion plate (15) respectively.
6. The device for checking the processing precision of the corner cube prism according to claim 2, characterized in that, The driver is a servo motor (17), the servo motor (17) is fixedly arranged on the front side wall of the frame (1), and the output end of the servo motor (17) is drivingly connected with the screw rod (8).