Protective chuck for clamping quartz cylinder
Through the bidirectional surface contact clamping structure of the inner and outer clamping seats, the problem of local stress concentration in the quartz cylinder when clamping the chuck is solved, and higher processing accuracy and finished product quality are achieved.
Patent Information
- Application Number
- CN202422072574.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-26
AI Technical Summary
Existing chucks tend to cause local stress concentration when clamping the quartz cylinder, resulting in deformation or breakage of the quartz cylinder, affecting the processing accuracy and finished product quality.
The bidirectional surface contact clamping structure of the inner and outer clamping seats is adopted, and the inner and outer bidirectional surface contact clamping is formed through the inner clamping seat and the clamping member on the outer clamping seat. The design of elastic bumps and concave blocks or arc claws is used to disperse the clamping force and avoid local stress concentration.
It effectively reduces the risk of deformation and fracture of quartz barrels during processing, and improves processing accuracy and finished product quality.
Smart Images
Figure CN223146942U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of quartz clamping equipment, in particular to a chuck for clamping a protective quartz cylinder. Background Art
[0002] With the continuous progress of semiconductor industry technology, the processing demand for quartz products, especially quartz cylinder devices, has increased significantly. In these precision machining processes, as a key clamping tool, the performance of the chuck directly affects the machining accuracy and the quality of finished products.
[0003] For thin-walled cylindrical quartz parts, due to their large diameter-to-thickness ratio, their ability to withstand external stress is relatively weak. When clamping with a traditional three-jaw chuck, the clamping force is mainly concentrated on three points, and this design is prone to local stress concentration in the clamping area. When subjected to uneven or excessive forces, this stress concentration may cause overall deformation or fracture of the quartz cylinder, thus seriously affecting the machining accuracy and the quality of finished products. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a chuck for clamping a protective quartz cylinder that can effectively prevent uneven stress on the quartz cylinder, thereby causing its overall deformation or even fracture, aiming at the deficiencies of the prior art.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A chuck for clamping a protective quartz cylinder includes a housing. A central hole is axially opened in the middle of the housing, and at least three main chutes are evenly opened outward along the hole wall of the central hole. Each main chute corresponds to a jaw unit. A driving mechanism is provided in the housing for driving each jaw unit to move synchronously along the corresponding main chute. Its characteristics are:
[0007] The jaw unit includes a moving seat that cooperates with the main chute, a mounting seat fixedly arranged above the moving seat, and a collet assembly arranged on the mounting seat.
[0008] The collet assembly includes an outer collet seat fixedly arranged above the mounting seat, a secondary chute opened on the mounting seat between the outer collet seat and the central hole, a sliding block that cooperates with the secondary chute, and an inner collet seat fixedly arranged above the sliding block and capable of sliding in and out along the secondary chute through the sliding block. A first clamping member is fixedly arranged on the outer side of the inner collet seat, and a second clamping member is fixedly arranged on the inner side of the outer collet seat. When the wall of the quartz cylinder is placed between the inner collet seat and the outer collet seat, the first clamping member can press the wall inward onto the second clamping member to form a surface contact clamping in both the inner and outer directions.
[0009] The technical problem to be solved by the present utility model can also be further achieved through the following steps. An adjustment rod is fixedly provided on the outer side surface of the sliding block. The adjustment rod is parallel to the secondary sliding groove. A thread is provided on the outer peripheral surface of the adjustment rod. An adjustment hole is formed by penetrating outward at the outer end of the secondary sliding groove. The outer end of the adjustment rod passes through the adjustment hole and extends outward. A limit nut cooperating with the mounting seat is sleeved on the extending end.
[0010] The technical problem to be solved by the present utility model can also be further achieved through the following steps. The first clamping member is a vertically strip-shaped elastic convex block. The elastic convex block has an arc-shaped protruding surface, and the protruding surface faces the outer clamping seat. The second clamping member is a vertically strip-shaped elastic concave block. The elastic concave block has an arc-shaped concave surface, and the concave surface faces the inner clamping seat.
[0011] The technical problem to be solved by the present utility model can also be further achieved through the following steps. The elastic convex block has the same width as the inner clamping seat. The elastic concave block has the same width as the outer clamping seat. Both the elastic convex block and the elastic concave block are made of rubber material and are provided with anti-slip patterns.
[0012] The technical problem to be solved by the present utility model can also be further achieved through the following steps. The first clamping member is a plurality of first arc-shaped claws arranged side by side vertically. The first arc-shaped claws have arc-shaped protruding surfaces, and the protruding surfaces face the outer clamping seat. The second clamping member is a plurality of second arc-shaped claws arranged side by side vertically. The second arc-shaped claws have arc-shaped concave surfaces, and the concave surfaces face the inner clamping seat.
[0013] The technical problem to be solved by the present utility model can also be further achieved through the following steps. The width of the first arc-shaped claw is greater than the width of the inner clamping seat. The width of the second arc-shaped claw is greater than the width of the outer clamping seat. The radian of the protruding surface of the first arc-shaped claw is equal to the radian of the concave surface of the second arc-shaped claw.
[0014] The technical problem to be solved by the present utility model can also be further achieved through the following steps. A plurality of first mounting holes are provided on the inner clamping seat. A first fixing rod cooperating with the first mounting holes is fixedly provided on the side of the first clamping member close to the inner clamping seat. A plurality of second mounting holes are provided on the outer clamping seat. A second fixing rod cooperating with the second mounting holes is fixedly provided on the side of the second clamping member close to the outer clamping seat.
[0015] The technical problem to be solved by the present utility model can also be further achieved through the following steps. A driving tooth is provided at the lower part of the moving seat. The driving mechanism includes a large gear disk horizontally arranged below the moving seat, and a small bevel gear arranged below the large gear disk for driving the large gear disk to rotate. A planar thread cooperating with the driving tooth is provided on the upper part of the large gear disk. A driving groove cooperating with the claw wrench is provided outside the small bevel gear.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The first clamping member and the second clamping member on the inner clamping seat and the outer clamping seat form an internal and external two-way surface contact clamping, effectively balancing and dispersing the clamping force, avoiding the problem of local stress concentration caused by single-point clamping of the traditional three-jaw chuck, reducing the risk of deformation or fracture of the quartz tube during processing due to uneven force, and improving the processing accuracy and finished product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;
[0018] Figure 2 It is an exploded schematic diagram of Embodiment 1 of the present utility model;
[0019] Figure 3 It is a schematic structural diagram of the jaw unit in Embodiment 1 of the present utility model;
[0020] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present utility model;
[0021] Figure 5 It is a schematic structural diagram of the jaw unit in Embodiment 2 of the present utility model;
[0022] In the figure: 1 - housing; 2 - central hole; 3 - main sliding groove; 4 - moving seat; 5 - mounting seat; 6 - outer clamping seat; 7 - secondary sliding groove; 8 - sliding block; 9 - inner clamping seat; 10 - adjusting rod; 11 - limit nut; 12 - elastic convex block; 13 - elastic concave block; 14 - first arc-shaped jaw; 15 - second arc-shaped jaw; 16 - first fixing rod; 17 - second fixing rod; 18 - driving tooth; 19 - large gear disk; 20 - small bevel gear; 21 - plane thread; 22 - driving groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following further describes the specific technical solutions of the present utility model to enable those skilled in the art to further understand the present utility model without restricting its rights.
[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model.
[0025]
Embodiment 1
[0026] Please refer to Figures 1-3, A chuck for clamping a protective quartz cylinder, comprising a housing 1. A central hole 2 is axially opened in the middle of the housing 1. At least three main chutes 3 are evenly opened outward along the hole wall of the central hole 2. Each main chute 3 corresponds to a jaw unit. A driving mechanism is provided in the housing 1 for driving each jaw unit to move synchronously along the corresponding main chute 3.
[0027] The jaw unit includes a moving seat 4 that cooperates with the main chute 3, a mounting seat 5 fixedly provided above the moving seat 4, and a collet assembly provided on the mounting seat 5.
[0028] The collet assembly includes an outer collet seat 6 fixedly provided above the mounting seat 5, a secondary chute 7 opened on the mounting seat 5 between the outer collet seat 6 and the central hole 2, a sliding block 8 that cooperates with the secondary chute 7, and an inner collet seat 9 fixedly provided above the sliding block 8 and capable of sliding in and out along the secondary chute 7 through the sliding block 8. A first clamping member is fixedly provided on the outer side of the inner collet seat 9, and a second clamping member is fixedly provided on the inner side of the outer collet seat 6. When the wall of the quartz cylinder is placed between the inner collet seat 9 and the outer collet seat 6, the first clamping member can press the cylinder wall inward onto the second clamping member to form an internal and external two-way surface contact clamping.
[0029] To realize the in-and-out sliding of the sliding block 8, an adjustment rod 10 is fixedly provided on the outer side surface of the sliding block 8. The adjustment rod 10 is parallel to the secondary chute 7. The outer peripheral surface of the adjustment rod 10 is provided with threads. An adjustment hole is opened outwardly through the outer end of the secondary chute 7. The outer end of the adjustment rod 10 passes through the adjustment hole and extends outward. A limit nut 11 that cooperates with the mounting seat 5 is sleeved on the extending end. In this way, by pushing and pulling the adjustment rod 10 on the outside, the inner collet seat 9 can be made to approach or move away from the outer collet seat 6. The limit nut 11 is used to cooperate with the mounting seat 5 to prevent the inner collet seat 9 from moving away from the outer collet seat 6 outward when clamping the quartz cylinder, so that the first clamping member and the second clamping member are disengaged from cooperation.
[0030] To realize the firm installation of the first clamping member and the second clamping member, a plurality of first mounting holes are provided on the inner collet seat 9. A first fixing rod 16 that cooperates with the first mounting holes is fixedly provided on the side of the first clamping member close to the inner collet seat 9; a plurality of second mounting holes are provided on the outer collet seat 6. A second fixing rod 17 that cooperates with the second mounting holes is fixedly provided on the side of the second clamping member close to the outer collet seat 6. Both between the first fixing rod 16 and the inner collet seat 9 and between the second fixing rod 17 and the outer collet seat 6 are fixed by lock nuts. In this way, both the rapid disassembly and assembly of the clamping members can be realized, and the firmness after installation can be ensured.
[0031] To achieve two-way surface contact clamping inside and outside, the first clamping member is a vertically strip-shaped elastic convex block 12, and the elastic convex block 12 has an arc-shaped protruding surface, and the protruding surface faces the outer clamping seat 6; the second clamping member is a vertically strip-shaped elastic concave block 13, and the elastic concave block 13 has an arc-shaped concave surface, and the concave surface faces the inner clamping seat 9. In this way, the elastic convex block 12 can press the barrel wall of the quartz tube inwardly onto the elastic concave block 13, and the elastic convex block 12 and the elastic concave block 13 can increase the clamping area through their own deformation under the action of the pressing force, so as to firmly fix the barrel wall of the quartz tube from both inside and outside directions.
[0032] In the above structure, the elastic convex block 12 has the same width as the inner clamping seat 9, the elastic concave block 13 has the same width as the outer clamping seat 6, both the elastic convex block 12 and the elastic concave block 13 are made of rubber material, and both are provided with anti-slip lines.
[0033] In the above structure, a driving tooth 18 is provided at the lower part of the moving seat 4, the driving mechanism includes a large gear disk 19 horizontally arranged below the moving seat 4, and a small bevel gear 20 arranged below the large gear disk 19 for driving the large gear disk 19 to rotate. A flat thread 21 cooperating with the driving tooth 18 is provided on the upper part of the large gear disk 19, and a driving groove 22 cooperating with the claw wrench is provided outside the small bevel gear 20. When the large gear disk 19 rotates, the moving seat 4 moves in and out through the flat thread 21, and the self-centering movement of the claw unit can be realized through the above structure.
[0034] Working principle: For a chuck used for clamping a protective quartz tube in the utility model, during use, first place the quartz tube on the chuck and ensure that its axis is roughly aligned with the axis of the central hole 2. Its tube wall is located between the inner clamping seat 9 and the outer clamping seat 6 of each clamping jaw unit. Then, cooperate the clamping jaw wrench with the driving groove 22 to drive the small bevel gear 20 and the large gear disk 19 to rotate in sequence. The plane thread 21 on the large gear disk 19 meshes with the driving teeth 18 at the lower part of the moving seat 4, thereby driving the moving seat 4 to move inward along the main sliding groove 3, so that the elastic concave block 13 on the outer clamping seat 6 fits against the outer wall surface of the quartz tube. Then, turn the limit nut 11 to pull the sliding block 8, the inner clamping seat 9 and the elastic convex block 12 outward until they fit against the inner wall surface of the quartz tube. Finally, continue to rotate the clamping jaw wrench and the limit nut 11 to make the elastic concave block 13 and the elastic convex block 12 approach each other from opposite directions, clamping and fixing the quartz tube from both the inside and the outside. Through the two-way surface contact clamping inside and outside, the clamping force is effectively dispersed, avoiding the local stress concentration problem caused by the single-point clamping of the traditional three-jaw chuck. During the entire clamping process, the self-centering function of the chuck ensures the synchronous movement of each clamping jaw unit, enabling the quartz tube to always maintain alignment with the axis of the central hole 2. In addition, the clamping parts made of rubber not only provide sufficient clamping force, but also enhance the clamping stability through their anti-slip pattern design, effectively preventing the quartz tube from shifting during the processing.
[0035]
Embodiment 2
[0036] Please refer to Figures 4-5 , to further improve the clamping effect of the quartz tube, the difference from Embodiment 1 is that in this embodiment, the first clamping part is replaced by the first arc-shaped claw 14, and the second clamping part is replaced by the second arc-shaped claw 15.
[0037] Specifically, the first clamping part is several first arc-shaped claws 14 arranged side by side vertically. The first arc-shaped claw 14 has an arc-shaped convex surface, and the convex surface faces the outer clamping seat 6 to better fit against the inner wall of the quartz tube. The second clamping part is several second arc-shaped claws 15 arranged side by side vertically. The second arc-shaped claw 15 has an arc-shaped concave surface, and the concave surface faces the inner clamping seat 9, forming a complement with the convex surface of the first arc-shaped claw 14 to jointly clamp the quartz tube. In this embodiment, both the first arc-shaped claw 14 and the second arc-shaped claw 15 are provided with three.
[0038] In the above structure, the width of the first arc-shaped claw 14 is greater than the width of the inner clamping seat 9, the width of the second arc-shaped claw 15 is greater than the width of the outer clamping seat 6, and the radian of the convex surface of the first arc-shaped claw 14 is equal to the radian of the concave surface of the second arc-shaped claw 15. The fact that the width of the second arc-shaped claw 15 is greater than the width of the outer clamping seat 6 echoes the design of the first arc-shaped claw 14, jointly expanding the clamping area and enhancing the clamping effect. Compared with the elastic convex / concave blocks in Embodiment 1, both the first arc-shaped claw 14 and the second arc-shaped claw 15 in this embodiment are made of metal, capable of providing more stable clamping force and supporting force. During use, the factory can manufacture arc-shaped claws with corresponding radians according to the size of the quartz tubes actually produced and replace them when needed.
[0039] The utility model forms an internal and external two-way surface contact clamping through the first clamping member and the second clamping member on the inner clamping seat and the outer clamping seat, effectively dispersing the clamping force, avoiding the problem of local stress concentration caused by single-point clamping of the traditional three-jaw chuck, reducing the risk of deformation or fracture of the quartz tube due to uneven stress during processing, and improving the processing accuracy and finished product quality.
[0040] Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the utility model without making creative efforts fall within the protection scope of the utility model.
Claims
1. A chuck for clamping a protective quartz tube, comprising a housing. A central hole is axially formed in the middle of the housing. At least three main chutes are evenly formed outward along the hole wall of the central hole. Each main chute corresponds to a jaw unit. A driving mechanism is provided in the housing for driving each jaw unit to move synchronously along the corresponding main chute. It is characterized in that: The jaw unit includes a moving seat matching with the main chute, a mounting seat fixedly arranged above the moving seat, and a collet assembly arranged on the mounting seat. The collet assembly includes an outer collet seat fixedly arranged above the mounting seat, a secondary chute formed in the mounting seat between the outer collet seat and the central hole, a sliding block matching with the secondary chute, and an inner collet seat fixedly arranged above the sliding block and capable of sliding in and out along the secondary chute through the sliding block. A first clamping member is fixedly arranged on the outer side of the inner collet seat, and a second clamping member is fixedly arranged on the inner side of the outer collet seat. When the tube wall of the quartz tube is placed between the inner collet seat and the outer collet seat, the first clamping member can press the tube wall inward onto the second clamping member to form a surface contact clamping in both the inner and outer directions.
2. The chuck for clamping the protective quartz cylinder according to claim 1, wherein: An adjusting rod is fixedly arranged on the outer side surface of the sliding block. The adjusting rod is parallel to the secondary chute. A thread is arranged on the outer peripheral surface of the adjusting rod. An adjusting hole is formed in the outer end of the secondary chute and penetrates outward. The outer end of the adjusting rod passes through the adjusting hole and extends outward. A limit nut matching with the mounting seat is sleeved on the extending end.
3. The chuck for clamping the protective quartz tube according to claim 2, characterized in that: The first clamping member is a vertical strip-shaped elastic convex block. The elastic convex block has an arc-shaped protruding surface, and the protruding surface faces the outer collet seat; the second clamping member is a vertical strip-shaped elastic concave block. The elastic concave block has an arc-shaped concave surface, and the concave surface faces the inner collet seat.
4. The chuck for clamping the protective quartz cylinder according to claim 3, wherein: The elastic convex block has the same width as the inner collet seat, the elastic concave block has the same width as the outer collet seat. Both the elastic convex block and the elastic concave block are made of rubber material and are provided with anti-slip lines.
5. The chuck for clamping the protective quartz tube according to claim 2, characterized in that: The first clamping member is a plurality of first arc-shaped claws arranged vertically side by side. The first arc-shaped claws have arc-shaped protruding surfaces, and the protruding surfaces face the outer collet seat; the second clamping member is a plurality of second arc-shaped claws arranged vertically side by side. The second arc-shaped claws have arc-shaped concave surfaces, and the concave surfaces face the inner collet seat.
6. The chuck for clamping the protective quartz cylinder according to claim 5, characterized in that: The width of the first arc-shaped claw is greater than the width of the inner collet seat, the width of the second arc-shaped claw is greater than the width of the outer collet seat, and the radian of the protruding surface of the first arc-shaped claw is equal to the radian of the concave surface of the second arc-shaped claw.
7. The chuck for clamping the protective quartz tube according to claim 1, characterized in that: A plurality of first mounting holes are formed in the inner collet seat. A first fixing rod matching with the first mounting holes is fixedly arranged on the side of the first clamping member close to the inner collet seat; a plurality of second mounting holes are formed in the outer collet seat. A second fixing rod matching with the second mounting holes is fixedly arranged on the side of the second clamping member close to the outer collet seat.
8. The chuck for clamping the protective quartz tube according to claim 1, characterized in that: A driving tooth is arranged at the lower part of the moving seat. The driving mechanism includes a large gear disk horizontally arranged below the moving seat, and a small bevel gear arranged below the large gear disk for driving the large gear disk to rotate. A flat thread matching with the driving tooth is arranged on the upper part of the large gear disk. A driving groove matching with a chuck wrench is arranged outside the small bevel gear.