Composite core positioning and clamping tool

Abstract

The application relates to the technical field of optical component processing, in particular to a composite core positioning and clamping tool, which comprises a base, a bottom plate slidably arranged on the base, a supporting plate arranged on the bottom plate through a multi-degree-of-freedom adjusting mechanism, and a product processing assembly arranged on the supporting plate, wherein the multi-degree-of-freedom adjusting mechanism comprises a horizontal moving assembly, a vertical moving assembly and a horizontal rotating assembly. The tool can correct the position error of the optical axis and the grinding spindle of the lens, and ensure that the lens center coincides with the machining center.

Description

Technical Field

[0001] This invention relates to the field of optical component processing technology, specifically a composite core-taking positioning and clamping fixture. Background Technology

[0002] In the manufacturing process of optical components (such as lenses, prisms, and filters), the edge grinding process is a critical final stage of finishing. This process mainly achieves precise adjustment of the outer diameter of the component, coaxiality correction between the optical axis and the mechanical reference, and shaping of the edge contour through centering, external cylindrical grinding, and chamfering.

[0003] Specifically, the edge grinding quality directly determines the coaxiality accuracy between the optical axis and the rotation center of the mechanical outer circle of the optical element, the dimensional tolerance of the outer circle, and the chamfering quality of the edge. These parameters are not only important factors in ensuring the imaging sharpness and resolution of the optical system, but also prerequisites for realizing automated assembly of optical lenses and interchangeability of components.

[0004] However, existing optical component edge grinding processes still have significant limitations. On the one hand, traditional positioning and clamping methods generally suffer from insufficient positioning accuracy and poor repeatability, leading to micro-movements or eccentricities in the components during processing, making it difficult to meet the coaxiality requirements of high-precision optical systems. On the other hand, during grinding and chamfering, improper feed rate control can easily cause micro-defects such as chipping and cracking in brittle materials like optical glass at the edges. These defects not only affect the product's appearance yield, but more seriously, under the stress of subsequent coating or assembly, these micro-cracks may further propagate, leading to component failure. Summary of the Invention

[0005] In order to solve the technical problems existing in the background art, the present invention provides a composite core picking positioning clamping fixture, which can correct the positional error between the optical axis and the grinding spindle of the lens, and ensure that the center of the lens coincides with the processing center.

[0006] The technical solution adopted by this invention to solve its technical problem is: A composite core-removing and positioning clamping fixture includes: Base; The base plate is slidably mounted on the base. The support plate is mounted on the base plate via a multi-degree-of-freedom adjustment mechanism; Product processing components are mounted on the support plate; The multi-degree-of-freedom adjustment mechanism includes a horizontal movement component, a vertical movement component, and a horizontal rotation component.

[0007] Furthermore, the base plate is provided with a first magnet, and the base is provided with a second magnet that magnetically engages with the first magnet.

[0008] Furthermore, the horizontal movement component includes: First translation seat; The second translation seat is slidably mounted on the first translation seat in the horizontal direction; The first differential head is positioned between the first translation seat and the second translation seat; The third translation seat is fixedly mounted on the second translation seat; The fourth translation seat is slidably mounted on the third translation seat in the horizontal direction and is perpendicular to the moving direction of the second translation seat; The second differential head is located between the third and fourth translation seats.

[0009] Furthermore, the vertical movement component includes: First longitudinal shift; The second longitudinal shift seat is fixedly mounted on the first longitudinal shift seat; The third longitudinal sliding seat is slidably mounted on the second longitudinal sliding seat in the vertical direction; The fourth longitudinal sliding seat is fixedly mounted on the third longitudinal sliding seat; The rotating block is rotatably mounted on the second longitudinal sliding seat around the horizontal axis; The third differential head is fixedly mounted on the second longitudinal sliding seat and abuts against the rotating block; The protruding post is fixedly mounted on the fourth longitudinal sliding seat and abuts against the rotating block.

[0010] Furthermore, the horizontal rotation component includes: First rotating seat; The second rotating seat is rotatably mounted on the first rotating seat about a vertical axis; The protrusion is fixedly mounted on one side of the second rotating seat; The fourth differential head is fixedly mounted on the first rotating seat and abuts against the protrusion.

[0011] Furthermore, the product processing components include: The processing plate has a front end that supports the lens to be processed. The guide post is fixedly installed at the rear end of the processing plate and slides in conjunction with the guide hole on the support plate; The connecting post is fixedly installed at the rear end of the guide post; Fixed end plate, fixedly installed at the rear end of the connecting column; The movable end plate is slidably fitted onto the connecting post; A spring is fitted onto the connecting post and located between the guide post and the movable end plate; The first conical ring has its outer circumference engaged with the support plate, and its inner circumference located between the movable end plate and the fixed end plate.

[0012] Furthermore, the processing plate has a limit hole, and the support plate is equipped with bolts that mate with the limit hole.

[0013] Furthermore, a second conical ring is provided in the guide hole of the support plate. The outer circumference of the second conical ring is engaged with the support plate, and the inner circumference of the second conical ring is located at the rear end of the fixed end plate.

[0014] Furthermore, the second conical ring is a double-layer structure composed of a composite of magnetostrictive and non-magnetostrictive materials.

[0015] The beneficial effects of this invention are: (1) By stacking horizontal moving components, vertical moving components, and horizontal rotating components, the differential head independently drives the translational and rotational joints in each direction, thereby achieving multi-dimensional precision micro-adjustment of the lens processing posture. In the vertical moving component, the horizontal displacement output by the differential head is converted into the longitudinal lifting and lowering of the third longitudinal moving seat through the rotation of the rotating block. The rigid kinematic joint replaces the traditional vertical screw and nut transmission, eliminating the backlash caused by the threaded fit in principle, and significantly improving the repeatability and anti-eccentric load capacity.

[0016] (2) The base plate and the base are connected by a sliding guide, and the base plate and the base are connected by a magnetic attraction between the first magnet and the second magnet. In the magnetic attraction state, the base plate can be automatically attracted and quickly positioned in the preset position of the base by magnetic force. After the magnetic attraction is released, the sliding constraint is released, and the operator can directly slide the base plate along the base to quickly remove it from the position without disassembling or assembling fasteners.

[0017] (3) The spring provides flexible floating support for the processing plate, enabling the lens to adaptively conform to the working surface of the processing equipment. When the edge of the lens is pressed beyond the threshold during processing, the first conical ring can generate instantaneous deformation switching, driving the processing plate and the lens to retract synchronously and disengage, thereby avoiding edge chipping due to local overpressure.

[0018] (4) The second cone ring adopts a double-layer structure design composed of magnetostrictive and non-magnetostrictive materials. When an external magnetic field excitation is sensed, the double-layer structure undergoes instantaneous deformation switching due to the interlayer strain difference, thereby actively outputting driving force to drive the processing plate to complete the reset. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the horizontal moving component; Figure 4 This is a structural schematic diagram of the vertically moving component; Figure 5 This is a schematic diagram of the horizontal rotating component; Figure 6 This is a schematic diagram showing the connection between the support plate and the product processing components; Figure 7 This is a structural diagram of the product processing components; Figure 8 This is a schematic diagram illustrating the working state of the product processing components; in, Figure 8 (a) shows the initial state of the product processing components. Figure 8 (b) shows the processing status of the product's processing components. Figure 8 (c) shows the disengaged state of the product processing components. Figure 8 (d) shows the reset state of the product processing components.

[0021] In the picture: 1. Base, 2. Base plate, 3. Horizontal moving component, 4. Vertical moving component, 5. Horizontal rotating component, 6. Support plate, 7. Product processing component, 8. First magnet, 9. Second magnet; 301. First translation seat; 302. Second translation seat; 303. First differential head; 304. Third translation seat; 305. Fourth translation seat; 306. Second differential head; 401. First longitudinal shifter, 402. Second longitudinal shifter, 403. Third longitudinal shifter, 404. Fourth longitudinal shifter, 405. Third differential head, 406. Rotating block, 407. Protruding column; 501. First rotary seat; 502. Second rotary seat; 503. Protrusion; 504. Fourth differential head; 701. Processing plate, 702. Guide post, 703. Spring, 704. Connecting post, 705. Movable end plate, 706. First conical ring, 707. Fixed end plate, 708. Second conical ring, 709. Limiting elongated hole. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 , 2As shown, the composite core-taking positioning and clamping fixture includes a base 1. A base plate 2 is slidably mounted on the base 1 via guide rails. A support plate 6 is mounted on the base plate 2 via a multi-degree-of-freedom adjustment mechanism. A product processing component 7 is mounted on the support plate 6. The multi-degree-of-freedom adjustment mechanism includes a horizontal movement component 3, a vertical movement component 4, and a horizontal rotation component 5. Through the stacked arrangement of the horizontal movement component 3, the vertical movement component 4, and the horizontal rotation component 5, a micrometer head independently drives the translational and rotational joints in each direction, thereby achieving multi-dimensional precision micro-adjustment of the lens processing posture.

[0024] Furthermore, the base plate 2 is equipped with a first magnet 8, and the base 1 is equipped with a second magnet 9 that magnetically engages with the first magnet 8. The base plate 2 and the base 1 are slidably guided together, and the base plate 2 and the base 1 are magnetically engaged by the first magnet 8 and the second magnet 9. In the magnetically attracted state, the base plate 2 can automatically attract and quickly position itself at a preset position on the base 1 by magnetic force. After the magnetic attraction is released, the sliding constraint is released, and the operator can directly slide the base plate 2 along the base 1 to quickly remove it from the position without disassembling or reassembling fasteners.

[0025] like Figure 3 As shown, the specific structure of the horizontal moving component 3 includes a first translation seat 301. A second translation seat 302 is slidably disposed on the upper end of the first translation seat 301 along a horizontal direction via a guide rail. A first micrometer head 303 is disposed between the first translation seat 301 and the second translation seat 302, and the first micrometer head 303 can achieve micrometer-level feed, thereby driving the second translation seat 302 to move precisely. A third translation seat 304 is fixedly disposed on the upper end of the second translation seat 302. A fourth translation seat 305 is slidably disposed on the upper end of the third translation seat 304 along a horizontal direction via a guide rail, and is perpendicular to the moving direction of the second translation seat 302. A second micrometer head 306 is disposed between the third translation seat 304 and the fourth translation seat 305, and the second micrometer head 306 can achieve micrometer-level feed, thereby driving the fourth translation seat 305 to move precisely.

[0026] like Figure 4As shown, the specific structure of the vertical moving component 4 includes a first longitudinal moving seat 401. The first longitudinal moving seat 401 is fixedly disposed on the upper end of the fourth translation seat 305. The second longitudinal moving seat 402 is fixedly disposed on the upper end of the first longitudinal moving seat 401. The third longitudinal moving seat 403 is slidably disposed on one side of the second longitudinal moving seat 402 along the vertical direction via a guide rail. The fourth longitudinal moving seat 404 is fixedly disposed on the upper end of the third longitudinal moving seat 403. The rotating block 406 is rotatably disposed on the second longitudinal moving seat 402 about a horizontal axis. The third micrometer head 405 is fixedly disposed on the second longitudinal moving seat 402 and abuts against the rotating block 406. The protruding post 407 is fixedly disposed on the fourth longitudinal moving seat 404 and abuts against the rotating block 406. In the vertical moving component, the third micrometer head 405 can achieve micron-level feed, and the horizontal displacement output by the third micrometer head 405 is converted into the longitudinal lifting and lowering of the third longitudinal moving seat 403 through the rotation of the rotating block 406. The rigid kinematic pair replaces the traditional vertical screw and nut transmission, which eliminates the backlash caused by the threaded connection in principle, and significantly improves the repeatability and anti-eccentric load capability.

[0027] like Figure 5 As shown, the specific structure of the horizontal rotation component 5 includes a first rotating seat 501. The first rotating seat 501 is fixedly disposed on the upper end of the fourth longitudinal sliding seat 404. A second rotating seat 502 is rotatably disposed on the first rotating seat 501 about a vertical axis. A protrusion 503 is fixedly disposed on one side of the second rotating seat 502. A fourth micrometer head 504 is fixedly disposed on the first rotating seat 501 and abuts against the protrusion 503. The fourth micrometer head 504 can achieve micron-level feed, thereby driving the second rotating seat 502 to move precisely through the protrusion 503.

[0028] like Figure 6 , 7As shown, the specific structure of the product processing component 7 includes a processing plate 701. The processing plate 701 is customized according to the shape of the lens to be processed and has a positioning surface that matches the outer diameter of the lens, enabling radial and end-face positioning of the lens. The front end of the processing plate 701 is used to support the lens to be processed. The processing plate 701 has a limiting elongated hole 709, and the support plate 6 is provided with bolts that mate with the limiting elongated hole 709. The engagement of the bolts with the limiting elongated hole 709 limits the travel of the processing plate 701. A guide post 702 is fixedly disposed at the rear end of the processing plate 701 and slides in engagement with a guide hole on the support plate 6. A connecting post 704 is fixedly disposed at the rear end of the guide post 702. A fixed end plate 707 is fixedly disposed at the rear end of the connecting post 704. A movable end plate 705 is slidably sleeved on the connecting post 704. A spring 703 is sleeved on the connecting post 704 and located between the guide post 702 and the movable end plate 705. The outer circumference of the first conical ring 706 is engaged with the support plate 6, and the inner circumference of the first conical ring 706 is located between the movable end plate 705 and the fixed end plate 707. The spring 703 provides flexible floating support for the processing plate 701, enabling the lens to adaptively conform to the working surface of the processing equipment. Furthermore, when the edge of the lens is subjected to pressure exceeding a threshold during processing, the first conical ring 706 can undergo instantaneous deformation switching, causing the processing plate 701 and the lens to retract synchronously and disengage, thereby preventing edge chipping due to local overpressure.

[0029] A second conical ring 708 is disposed within the guide hole of the support plate 6. The outer circumference of the second conical ring 708 is engaged with the support plate 6, and the inner circumference of the second conical ring 708 is located at the rear end of the fixed end plate 707. The second conical ring 708 is a double-layer structure composed of a composite of magnetostrictive and non-magnetostrictive materials. When the second conical ring 708 senses an external magnetic field excitation, the double-layer structure undergoes instantaneous deformation switching due to the interlayer strain difference, thereby actively outputting driving force to drive the processing plate 701 to complete the reset.

[0030] Specific usage instructions: The lens to be processed is fixed to the front end of the processing plate 701. With the first magnet 8 and the second magnet 9 in a magnetically attracted state, the base plate 2 can automatically adhere to and quickly position itself at the preset work position on the base 1, thus enabling processing. During the processing operation, the micrometer heads of the horizontal moving component 3, the vertical moving component 4, and the horizontal rotating component 5 independently drive the translational and rotational joints in each direction, thereby achieving multi-dimensional precision micro-adjustment of the lens processing posture.

[0031] Furthermore, Figure 8 (a) shows the initial state of the product processing component 7, i.e., when the lens is not in contact with the processing equipment, the processing plate 701 carrying the lens to be processed is located at the foremost position.

[0032] Figure 8(b) shows the processing state of the product processing component 7, that is, when the lens is in contact with the processing equipment, the processing equipment presses on the lens of the processing plate 701, the spring 703 is compressed, the spring 703 provides flexible floating support for the processing plate 701, so that the lens can adaptively conform to the working surface of the processing equipment.

[0033] Figure 8 (c) shows the disengaged state of the product processing component 7. When the lens edge is pressed beyond the threshold during processing, the pressure of the spring 703 on the first conical ring 706 through the movable end plate 705 exceeds the deformation switching threshold of the first conical ring 706. The first conical ring 706 switches from a forward convex shape to a backward convex shape, thereby driving the processing plate 701 to retract synchronously with the lens and disengage from the working surface of the processing equipment, thereby avoiding edge chipping of the lens due to local overpressure.

[0034] Figure 8 (d) shows the reset state of the product processing component 7, i.e., when it is necessary to remove the product processing component 7 from... Figure 8 (c) State reset to Figure 8 (a) When the magnet approaches the location of the second conical ring 708, the second conical ring 708 senses the external magnetic field excitation, and the double-layer structure undergoes instantaneous deformation switching due to the interlayer strain difference. The second conical ring 708 switches from a rearward convex shape to a forward convex shape, thereby actively outputting driving force to drive the processing plate 701 to complete the reset.

[0035] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A composite core-picking and positioning clamping fixture, characterized in that, include: Base (1); The base plate (2) is slidably mounted on the base (1); The support plate (6) is mounted on the base plate (2) by a multi-degree-of-freedom adjustment mechanism; Product processing components (7) are disposed on the support plate (6); The multi-degree-of-freedom adjustment mechanism includes a horizontal movement component (3), a vertical movement component (4), and a horizontal rotation component (5).

2. The composite core-taking and positioning clamping fixture according to claim 1, characterized in that, The base plate (2) is provided with a first magnet (8), and the base (1) is provided with a second magnet (9) that magnetically engages with the first magnet (8).

3. The composite core-taking and positioning clamping fixture according to claim 1, characterized in that, The horizontal movement component (3) includes: First translation seat (301); The second translation seat (302) is slidably disposed on the first translation seat (301) in the horizontal direction; The first differential head (303) is disposed between the first translation seat (301) and the second translation seat (302); The third translation seat (304) is fixedly mounted on the second translation seat (302); The fourth translation seat (305) is slidably disposed on the third translation seat (304) in the horizontal direction and is perpendicular to the moving direction of the second translation seat (302); The second differential head (306) is disposed between the third translation seat (304) and the fourth translation seat (305).

4. The composite core-taking and positioning clamping fixture according to claim 1, characterized in that, The vertical movement component (4) includes: First longitudinal shifter (401); The second longitudinal shift seat (402) is fixedly disposed on the first longitudinal shift seat (401); The third longitudinal shift seat (403) is slidably disposed on the second longitudinal shift seat (402) in the vertical direction; The fourth longitudinal shift seat (404) is fixedly disposed on the third longitudinal shift seat (403); The rotating block (406) is rotatably mounted on the second longitudinal shift seat (402) about a horizontal axis; The third differential head (405) is fixedly mounted on the second longitudinal shift seat (402) and abuts against the rotating block (406); The protruding post (407) is fixedly mounted on the fourth longitudinal shift seat (404) and abuts against the rotating block (406).

5. The composite core-taking and positioning clamping fixture according to claim 1, characterized in that, The horizontal rotation component (5) includes: First rotary seat (501); The second rotating seat (502) is rotatably mounted on the first rotating seat (501) about a vertical axis; A protrusion (503) is fixedly disposed on one side of the second rotating seat (502); The fourth micrometer head (504) is fixedly mounted on the first rotating seat (501) and abuts against the protrusion (503).

6. The composite core-taking and positioning clamping fixture according to claim 1, characterized in that, The product processing component (7) includes: The processing plate (701) has a front end used to support the lens to be processed; The guide post (702) is fixedly disposed at the rear end of the processing plate (701) and slides in cooperation with the guide hole on the support plate (6); A connecting post (704) is fixedly disposed at the rear end of the guide post (702); A fixed end plate (707) is fixedly disposed at the rear end of the connecting column (704); The movable end plate (705) is slidably sleeved on the connecting post (704); A spring (703) is sleeved on the connecting post (704) and located between the guide post (702) and the movable end plate (705); The first conical ring (706) has its outer circumference engaged with the support plate (6), and its inner circumference is located between the movable end plate (705) and the fixed end plate (707).

7. The composite core-taking and positioning clamping fixture according to claim 6, characterized in that, The processing plate (701) has a limiting elongated hole (709), and the support plate (6) is provided with bolts that cooperate with the limiting elongated hole (709).

8. The composite core-taking and positioning clamping fixture according to claim 6, characterized in that, A second conical ring (708) is provided in the guide hole of the support plate (6). The outer circumference of the second conical ring (708) is engaged with the support plate (6), and the inner circumference of the second conical ring (708) is located at the rear end of the fixed end plate (707).

9. The composite core-taking and positioning clamping fixture according to claim 8, characterized in that, The second conical ring (708) is a double-layer structure composed of a composite of magnetostrictive material and non-magnetostrictive material.

Images