Multi-axis linkage clamp for high-precision optical element machining

Abstract

The multi-axis linkage clamp for high-precision optical element machining comprises a base, two first vertical plates and two second vertical plates are fixed to the top of the base, and a first two-way screw rod and a second two-way screw rod are rotationally installed between the two first vertical plates and between the two second vertical plates correspondingly; the first vertical plate is fixedly provided with a first motor for driving the first two-way screw, the first two-way screw is provided with two threads which are equal in thread pitch and opposite in rotation direction, the second two-way screw and the first two-way screw are of the same structure, the top of the base is fixedly provided with a supporting rod, the upper end of the supporting rod is fixedly provided with a mounting table, and the mounting table is rotationally provided with a containing table. A driving assembly for driving the placing table to rotate is arranged on the mounting table; the base is provided with a clamping mechanism used for clamping the high-precision optical element to be machined on the placing table. According to the invention, the tedious operation of manually rotating the high-precision optical element or changing the position of a processing tool to process different parts on the peripheral side of the optical element in the prior art is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, especially in high accuracy optical element processing with multi -axis linkage clamp. BACKGROUND

[0002] ‌High accuracy optical element is the element that adjusts, controls and analyzes the light transmission in the optical field, has the characteristics of high accuracy, high stability and high forming accuracy, these elements play an important role in modern optoelectronic field, and are widely used in various optical systems and equipment‌.

[0003] In the Chinese utility model patent with the publication number CN217194836U discloses a tool fixture for optical coating processing, including the fixture mainboard, the inside rotation of fixture mainboard is connected with first screw rod, one end of first screw rod is fixedly connected with the output shaft of second servo motor, the side of second servo motor is fixedly connected with the front of fixture mainboard, the side of first screw rod is respectively transmission connection with first short sliding block and second short sliding block, the inside lower part of fixture mainboard is rotatably connected with second screw rod, one end of second screw rod is fixedly connected with the output shaft of first servo motor, the side of first servo motor is fixedly connected with the side of fixture mainboard, the side of one end of second screw rod is respectively transmission connection with first long sliding block and second long sliding block, the upper end of first short sliding block and second short sliding block with first long sliding block and second long sliding block are all provided with clamping plate, one side of clamping plate is provided with rubber pad, the four corners of fixture mainboard are all screw connection with threaded rod, the upper part of the side of threaded rod is provided with rectangular sliding block, the upper end of threaded rod is provided with extension rod, the upper end of extension rod is provided with hexagonal rotating block, the lower end of threaded rod is rotatably connected with bearing block, the lower end of bearing block is provided with antiskid block, the middle part of fixture mainboard is provided with middle rectangular column.

[0004] For the related technology in the above, the inventor believes that the following defects exist: when the optical element is placed on the placing plate during the processing of the optical element, the above-mentioned clamp can only clamp the optical element, and when the processing tool is used to process the optical element, the different positions of the optical element need to be processed, and in the above-mentioned clamp, the optical element needs to be manually rotated or the position of the processing tool needs to be changed to realize the processing of different parts of the optical element, which is relatively cumbersome, therefore, a clamp capable of automatically rotating after releasing the clamping action of the optical element is needed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a kind of high accuracy optical element processing with multi -axis linkage clamp.

[0006] The above technical purpose of the utility model is realized through the following technical scheme: a multi-axis linkage clamp for high-precision optical element processing, comprising a base, the top of the base is fixed with two symmetrically arranged first vertical plates and two symmetrically arranged second vertical plates, a first bidirectional screw is rotatably installed between the two first vertical plates, a second bidirectional screw perpendicular to the first bidirectional screw is rotatably installed between the two second vertical plates, a first motor for driving the first bidirectional screw is fixed on the first vertical plate, the first bidirectional screw is provided with two threads with equal pitch and opposite rotation directions, the second bidirectional screw is the same in structure as the first bidirectional screw, a support rod is fixed on the top of the base, an installation table is fixed on the upper end of the support rod, a placing table is rotatably installed on the installation table, and a driving assembly for driving the placing table to rotate is arranged on the installation table; a clamping mechanism for clamping the high-precision optical element to be processed on the placing table is arranged on the base, the clamping mechanism comprises four clamping assemblies moving towards the side close to or away from the placing table when the first bidirectional screw rotates, the four clamping assemblies are symmetrically arranged on the two threads of the first bidirectional screw and the two threads of the second bidirectional screw respectively, and the first bidirectional screw and the second bidirectional screw are synchronously rotated through a transmission assembly.

[0007] Through the above technical scheme, the four clamping assemblies cooperate and clamp the high-precision optical element to be processed on the placing table, when different positions of the periphery of the high-precision optical element to be processed need to be processed, the staff only needs to drive the first bidirectional screw to rotate through the first motor, so that the clamping assembly moves away from the placing table to release the high-precision optical element, then the placing table is driven to rotate through the driving assembly, so that the high-precision optical element on the placing table can be rotated, so that the high-precision optical element can be rotated without changing the position of the processing tool, and the high-precision optical element can be fixed again through the clamping assembly, so as to realize the processing of different parts of the high-precision optical element, and the tedious operation of manually rotating the high-precision optical element or changing the position of the processing tool to process different parts of the optical element in the traditional technology is avoided.

[0008] Further, the heights of the first bidirectional screw, the second bidirectional screw and the installation table increase in turn, a center column rotatably connected with the installation table is fixed on the bottom of the placing table, and the driving assembly comprises a second motor fixed on the installation table, an upper driving gear fixed on the output end of the second motor and an upper driven gear fixed on the center column and engaged with the upper driving gear.

[0009] By adopting the above technical solution, after the second motor works, it drives the upper drive gear to rotate, thereby causing the upper driven gear meshing with the upper drive gear, the central column fixed with the upper driven gear, and the placement platform fixed with the central column to rotate. This causes the high-precision optical element on the placement platform to rotate. After the high-precision optical element is fixed again, it can be processed, eliminating the tedious operation of manually rotating the high-precision optical element.

[0010] Furthermore, the transmission assembly includes a rotating rod rotatably mounted on the second vertical plate, a driven bevel gear fixed to the end of the rotating rod, a driving bevel gear fixedly sleeved on the first bidirectional screw and meshing with the driven bevel gear, a lower driving gear fixedly sleeved on the rotating rod, and a lower driven gear fixedly sleeved on the second bidirectional screw and meshing with the lower driving gear.

[0011] By adopting the above technical solution, after the first motor works and drives the first bidirectional screw to rotate, the active bevel gear on the first bidirectional screw drives the driven bevel gear meshing with the active bevel gear, the rotating rod fixed with the driven bevel gear, the lower active gear fixedly sleeved on the rotating rod, the lower driven gear meshing with the lower active gear, and the second bidirectional screw fixed with the lower driven gear to rotate synchronously, so that the four sets of clamping components move synchronously in order to clamp the high-precision optical element.

[0012] Furthermore, the clamping assembly includes a connecting plate sleeved on the first or second bidirectional screw and threadedly connected, and a clamping block fixed on the connecting plate for clamping the high-precision optical element to be processed on the placement stage. The bottom of the clamping block is higher than the upper surface of the placement stage. The top of the base is provided with a limiting groove that slides with the bottom of the connecting plate. There are two limiting grooves, which correspond to the first and second bidirectional screws respectively. The clamping blocks of the four sets of clamping assemblies are evenly distributed about the axis of the placement stage.

[0013] By adopting the above technical solution, during the synchronous rotation of the first bidirectional screw and the second bidirectional screw, the connecting plate is threadedly connected to the first bidirectional screw or the second bidirectional screw, and the bottom of the connecting plate slides into the limiting groove on the base. This allows the connecting plates of the four sets of clamping components to move synchronously toward the side closer to or further away from the placement stage, so that the four clamping blocks cooperate and clamp the high-precision optical element, making it easier for the processing tools to process it.

[0014] Furthermore, the connecting plate is L-shaped, and the horizontal portion of the connecting plate extends toward the side closest to the axis of the placement platform.

[0015] By adopting the above technical solution, the horizontal part of the connecting plate is misaligned with the placement stage, so that the clamping block can clamp high-precision optical components with a width smaller than the diameter of the placement stage.

[0016] Furthermore, a rubber sheet is attached and fixed to the side of the clamping block near the axis of the placement platform.

[0017] By adopting the above technical solution, the probability of high-precision optical components being damaged by the clamping block is reduced.

[0018] Furthermore, the bottom of the limiting groove is connected to the bottom of the base.

[0019] By adopting the above technical solution, a small amount of debris entering the limiting groove can be directly discharged from the bottom of the limiting groove, reducing the probability that it is difficult to clean the debris because the bottom of the limiting groove is not connected to the base.

[0020] Furthermore, both the first motor and the second motor are servo motors, and a controller that is electrically connected to both the first motor and the second motor is fixed on the top of the base.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This application eliminates the cumbersome operation required in traditional technology to manually rotate high-precision optical components or change the position of processing tools to process different parts around the optical components;

[0023] 2. In this application, after the second motor works, it drives the upper drive gear to rotate, thereby causing the upper driven gear meshing with the upper drive gear, the central column fixed with the upper driven gear, and the placement platform fixed with the central column to rotate. This causes the high-precision optical element on the placement platform to rotate. After the high-precision optical element is fixed again, it can be processed, eliminating the tedious operation of manually rotating the high-precision optical element.

[0024] 3. In this application, during the synchronous rotation of the first bidirectional screw and the second bidirectional screw, the connecting plate is threadedly connected to the first bidirectional screw or the second bidirectional screw, and the bottom of the connecting plate slides into the limiting groove on the base. This allows the connecting plates of the four clamping components to move synchronously toward the side closer to or further away from the placement stage, so that the four clamping blocks cooperate and clamp the high-precision optical element, making it easier for the processing tool to process it. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0027] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0028] In the diagram: 1. Base; 11. Controller; 12. Limiting groove; 2. First vertical plate; 21. First bidirectional screw; 22. First motor; 3. Second vertical plate; 31. Second bidirectional screw; 4. Support rod; 5. Mounting platform; 6. Placement platform; 61. Central column; 7. Drive assembly; 71. Second motor; 72. Upper drive gear; 73. Upper driven gear; 8. Clamping mechanism; 81. Clamping assembly; 811. Connecting plate; 812. Clamping block; 8121. Rubber sheet; 9. Transmission assembly; 91. Rotating rod; 92. Driven bevel gear; 93. Driven bevel gear; 94. Lower drive gear; 95. Lower driven gear. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figures 1-3 As shown in the figure, this application discloses a multi-axis linkage fixture for high-precision optical component processing, including a base 1. Two symmetrically arranged first vertical plates 2 and two symmetrically arranged second vertical plates 3 are fixed to the top of the base 1. A first bidirectional screw 21 is rotatably mounted between the two first vertical plates 2, and a second bidirectional screw 31 perpendicular to the first bidirectional screw 21 is rotatably mounted between the two second vertical plates 3. A first motor 22 for driving the first bidirectional screw 21 is fixed on the first vertical plate 2. The first bidirectional screw 21 has two threads with equal pitch and opposite directions. The second bidirectional screw 31 has the same structure as the first bidirectional screw 21. Four... Each of the four support rods 4 has a mounting platform 5 fixed to its upper end. A placement platform 6 is rotatably mounted on the mounting platform 5. A drive assembly 7 for driving the placement platform 6 to rotate is provided on the mounting platform 5. A clamping mechanism 8 for clamping the high-precision optical element to be processed on the placement platform 6 is provided on the base 1. The clamping mechanism 8 includes four sets of clamping components 81 that move toward or away from the placement platform 6 when the first bidirectional screw 21 rotates. The four sets of clamping components 81 are symmetrically arranged on the two threads of the first bidirectional screw 21 and the two threads of the second bidirectional screw 31. The first bidirectional screw 21 and the second bidirectional screw 31 rotate synchronously through a transmission assembly 9.

[0031] Four sets of clamping components 81 work together to clamp the high-precision optical element to be processed on the placement stage 6. When different positions around the high-precision optical element need to be processed, the operator only needs to drive the first bidirectional screw 21 to rotate through the first motor 22, thereby moving the clamping components 81 away from the placement stage 6 to release the high-precision optical element. Then, the placement stage 6 is driven to rotate by the drive component 7, so that the high-precision optical element on the placement stage 6 can be rotated. This allows the high-precision optical element to be rotated without changing the position of the processing tool. The high-precision optical element can be fixed by the clamping components 81 again, so as to realize the processing of different parts of the high-precision optical element. This eliminates the cumbersome operation of manually rotating the high-precision optical element or changing the position of the processing tool to process different parts around the optical element in the traditional technology.

[0032] The heights of the first bidirectional screw 21, the second bidirectional screw 31, and the mounting platform 5 increase sequentially. A central column 61, rotatably connected to the mounting platform 5, is fixed to the bottom of the placement platform 6. The drive assembly 7 includes a second motor 71 fixed to the mounting platform 5, an upper drive gear 72 fixed to the output end of the second motor 71, and an upper driven gear 73 fixedly sleeved on the central column 61 and meshing with the upper drive gear 72. In this embodiment, both the first motor 22 and the second motor 71 are servo motors, and a controller 11, electrically connected to both the first motor 22 and the second motor 71, is fixed to the top of the base 1.

[0033] After the second motor 71 starts working, it drives the upper drive gear 72 to rotate, thereby causing the upper driven gear 73 meshing with the upper drive gear 72, the central column 61 fixed with the upper driven gear 73, and the placement platform 6 fixed with the central column 61 to rotate. This causes the high-precision optical element on the placement platform 6 to rotate. After the high-precision optical element is fixed again, it can be processed, eliminating the tedious operation of manually rotating the high-precision optical element.

[0034] It is worth noting that, in order to reduce the probability of positional shift during the rotation of the high-precision optical element, the operator only needs to drive the placement stage 6 to rotate through the drive component 7 when the clamping component 81 just releases the high-precision optical element (the clamping part of the clamping component 81 is in contact with the high-precision optical element but does not have clamping force). The four sets of clamping components 81 can effectively limit the shift of the placement stage 6, which is beneficial to ensuring the processing effect of the high-precision optical element in the later stage.

[0035] The transmission assembly 9 includes a rotating rod 91 rotatably mounted on the second vertical plate 3, a driven bevel gear 92 fixed to the end of the rotating rod 91, a driving bevel gear 93 fixedly sleeved on the first bidirectional screw 21 and meshing with the driven bevel gear 92, a lower driving gear 94 fixedly sleeved on the rotating rod 91, and a lower driven gear 95 fixedly sleeved on the second bidirectional screw 31 and meshing with the lower driving gear 94.

[0036] After the first motor 22 operates and drives the first bidirectional screw 21 to rotate, the driving bevel gear 93 on the first bidirectional screw 21 drives the driven bevel gear 92 meshing with the driving bevel gear 93, the rotating rod 91 fixed to the driven bevel gear 92, the lower driving gear 94 fixedly sleeved on the rotating rod 91, the lower driven gear 95 meshing with the lower driving gear 94, and the second bidirectional screw 31 fixed to the lower driven gear 95 to rotate synchronously, so that the four sets of clamping components 81 move synchronously to clamp the high-precision optical element.

[0037] The clamping assembly 81 includes a connecting plate 811 sleeved on the first bidirectional screw 21 or the second bidirectional screw 31 and threadedly connected, and a clamping block 812 fixed on the connecting plate 811 for clamping the high-precision optical element to be processed on the placement stage 6. The bottom of the clamping block 812 is higher than the upper surface of the placement stage 6. The top of the base 1 is provided with a limiting groove 12 that slides with the bottom of the connecting plate 811. There are two limiting grooves 12, which correspond to the first bidirectional screw 21 and the second bidirectional screw 31 respectively. The clamping blocks 812 of the four sets of clamping assemblies 81 are evenly distributed about the axis of the placement stage 6.

[0038] During the synchronous rotation of the first bidirectional screw 21 and the second bidirectional screw 31, the connecting plate 811 is threadedly connected to the first bidirectional screw 21 or the second bidirectional screw 31, and the bottom of the connecting plate 811 slides into the limiting groove 12 on the base 1. This allows the connecting plates 811 of the four sets of clamping assemblies 81 to move synchronously toward the side closer to or away from the placement stage 6, so that the four clamping blocks 812 can cooperate and clamp the high-precision optical element, making it easier for the processing tools to process it.

[0039] The connecting plate 811 is L-shaped, with its horizontal portion extending towards the side closest to the axis of the placement stage 6. The horizontal portion of the connecting plate 811 is misaligned with the placement stage 6, allowing the clamping block 812 to clamp high-precision optical components whose width is smaller than the diameter of the placement stage 6. To reduce the probability of damage to the high-precision optical components caused by the clamping block 812, a rubber sheet 8121 is attached and fixed to the side of the clamping block 812 closest to the axis of the placement stage 6.

[0040] In this embodiment, the bottom of the limiting groove 12 is connected to the bottom of the base 1, and a small amount of debris entering the limiting groove 12 can be directly discharged from the bottom of the limiting groove 12, reducing the probability that it is difficult to clean the debris because the bottom of the limiting groove 12 is not connected to the base 1.

[0041] The working principle of the multi-axis linkage fixture for high-precision optical element processing in this embodiment is as follows: Four sets of clamping components 81 cooperate to clamp the high-precision optical element to be processed on the placement stage 6. When different positions around the high-precision optical element need to be processed, the operator only needs to drive the first bidirectional screw 21 to rotate through the first motor 22, so that the clamping components 81 are moved away from the placement stage 6 to release the high-precision optical element. Then, the placement stage 6 is driven to rotate through the driving component 7, so that the high-precision optical element on the placement stage 6 can be rotated, so that the high-precision optical element can be rotated without changing the position of the processing tool. The high-precision optical element can be fixed by the clamping components 81 again, so as to realize the processing of different parts of the high-precision optical element. This eliminates the cumbersome operation of manually rotating the high-precision optical element or changing the position of the processing tool to process different parts around the optical element in the traditional technology.

[0042] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A multi-axis linkage fixture for high-precision optical component processing, characterized in that: The base (1) includes a base (1), on which two symmetrically arranged first vertical plates (2) and two symmetrically arranged second vertical plates (3) are fixed at the top. A first bidirectional screw (21) is rotatably installed between the two first vertical plates (2), and a second bidirectional screw (31) perpendicular to the first bidirectional screw (21) is rotatably installed between the two second vertical plates (3). A first motor (22) for driving the first bidirectional screw (21) is fixed on the first vertical plate (2). The first bidirectional screw (21) is provided with two threads with equal pitch and opposite directions. The second bidirectional screw (31) has the same structure as the first bidirectional screw (21). A support rod (4) is fixed at the top of the base (1). A mounting platform (5) is fixed at the upper end of the support rod (4). A placement platform (6) is rotatably installed on the mounting platform (5). A drive assembly (7) for driving the placement platform (6) to rotate is provided on the mounting platform (5). The base (1) is provided with a clamping mechanism (8) for clamping the high-precision optical components to be processed on the placement stage (6). The clamping mechanism (8) includes four sets of clamping components (81) that move toward or away from the placement stage (6) when the first bidirectional screw (21) rotates. The four sets of clamping components (81) are symmetrically arranged on the two threads of the first bidirectional screw (21) and the two threads of the second bidirectional screw (31). The first bidirectional screw (21) and the second bidirectional screw (31) rotate synchronously through a transmission component (9).

2. The multi-axis linkage fixture for high-precision optical component processing according to claim 1, characterized in that: The heights of the first bidirectional screw (21), the second bidirectional screw (31), and the mounting platform (5) increase sequentially. The bottom of the placement platform (6) is fixed with a central column (61) that is rotatably connected to the mounting platform (5). The drive assembly (7) includes a second motor (71) fixed on the mounting platform (5), an upper drive gear (72) fixed on the output end of the second motor (71), and an upper driven gear (73) fixedly sleeved on the central column (61) and meshing with the upper drive gear (72).

3. The multi-axis linkage fixture for high-precision optical component processing according to claim 2, characterized in that: The transmission assembly (9) includes a rotating rod (91) rotatably mounted on the second vertical plate (3), a driven bevel gear (92) fixed to the end of the rotating rod (91), a driving bevel gear (93) fixedly sleeved on the first bidirectional screw (21) and meshing with the driven bevel gear (92), a lower driving gear (94) fixedly sleeved on the rotating rod (91), and a lower driven gear (95) fixedly sleeved on the second bidirectional screw (31) and meshing with the lower driving gear (94).

4. The multi-axis linkage fixture for high-precision optical component processing according to claim 3, characterized in that: The clamping assembly (81) includes a connecting plate (811) sleeved on the first bidirectional screw (21) or the second bidirectional screw (31) and threadedly connected, and a clamping block (812) fixed on the connecting plate (811) for clamping the high-precision optical element to be processed on the placement stage (6). The bottom of the clamping block (812) is higher than the upper surface of the placement stage (6). The top of the base (1) is provided with a limiting groove (12) that slides with the bottom of the connecting plate (811). There are two limiting grooves (12) and they correspond to the first bidirectional screw (21) and the second bidirectional screw (31) respectively. The clamping blocks (812) of the four sets of clamping assemblies (81) are evenly distributed about the axis of the placement stage (6).

5. A multi-axis linkage fixture for high-precision optical component processing according to claim 4, characterized in that: The connecting plate (811) is L-shaped, and the horizontal part of the connecting plate (811) extends toward the side close to the axis of the placement platform (6).

6. A multi-axis linkage fixture for high-precision optical component processing according to claim 4, characterized in that: The clamping block (812) is attached to and fixed with a rubber sheet (8121) on the side near the axis of the placement platform (6).

7. A multi-axis linkage fixture for high-precision optical component processing according to claim 4, characterized in that: The bottom of the limiting groove (12) is connected to the bottom of the base (1).

8. A multi-axis linkage fixture for high-precision optical component processing according to claim 4, characterized in that: The first motor (22) and the second motor (71) are both servo motors, and the top of the base (1) is fixed with a controller (11) that is electrically connected to both the first motor (22) and the second motor (71).

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