Sapphire cylindrical grinding clamping device

Abstract

The utility model discloses a sapphire cylindrical grinding clamping device which comprises a base, two pushing mechanisms are symmetrically arranged at the two ends of the base, a rotating mechanism is correspondingly arranged at the moving end of one pushing mechanism, the two rotating mechanisms are coaxially arranged, a supporting frame is coaxially arranged on each rotating mechanism, and the supporting frame is arranged on the base. A clamping sleeve is installed on one supporting frame in a matched mode, an ejector pin is installed on the other supporting frame in a matched mode, and the clamping sleeve is matched with the ejector pin. According to the utility model, sapphire bars can be always positioned on the same axis, and the processing accuracy is improved.

Description

Technical Field

[0001] This utility model relates to a clamping device for sapphire external cylindrical grinding, belonging to the technical field of clamping devices. Background Technology

[0002] Sapphire substrates are made from sapphire rods and can be used to manufacture LED lights. The first step in manufacturing sapphire substrates is to grind the outer diameter of the sapphire rod. During grinding, the sapphire rod is fixed on a cylindrical grinding machine by a clamping device. The clamping device currently used consists of a center pin and a chuck. The chuck includes a chuck ring, two clamping bolts spaced apart on the chuck ring, and a clamping handle eccentrically mounted on the chuck ring. Adjusting the clamping bolts can cause the two clamping bolts to extend inconsistently into the chuck ring, reducing the concentricity accuracy of the center pin. Utility Model Content

[0003] To address at least one problem existing in the prior art, this utility model provides a sapphire external cylindrical grinding clamping device that can ensure that the sapphire rod is always on the same axis, thereby improving processing accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sapphire external cylindrical grinding clamping device, comprising a base, two pushing mechanisms symmetrically arranged at both ends of the base, a rotary mechanism corresponding to the moving end of one pushing mechanism, the two rotary mechanisms being coaxially arranged, a support bracket being coaxially arranged on each rotary mechanism, a clamping sleeve being adapted to be installed on one support bracket, and a ejector pin being adapted to be installed on the other support bracket, wherein the clamping sleeve cooperates with the ejector pin.

[0005] Preferably, the clamping sleeve includes a connecting sleeve base, which is mounted on a matching support bracket. A clamping claw is coaxially arranged at one end of the connecting sleeve base near the ejector pin. A clamping arc plate is circumferentially evenly arranged at the other end of the clamping claw near the ejector pin, forming a trumpet-shaped structure. The inner diameter of the opening near the ejector pin is larger than the inner diameter of the opening away from the ejector pin. All the clamping arc plates are brought together and tightened by a locking sleeve. The locking sleeve is cylindrical and coaxially fitted onto the connecting sleeve base and the clamping claw. One end of the locking sleeve is threaded to the connecting sleeve base, and the other end is threaded to the clamping claw. When the locking sleeve rotates towards the ejector pin, all the clamping arc plates of the clamping claw move together and tighten.

[0006] Preferably, the inner curved surface of the locking sleeve near the ejector pin is provided with a pressing surface a, a guiding inclined surface b, and an arc-inducing surface c arranged sequentially from the direction away from the ejector pin to the direction near the ejector pin, wherein the pressing surface a is parallel to the axis.

[0007] Preferably, the end of the pressing surface a near the ejector pin is connected to thread one, and thread one is connected to thread two. Thread two is provided on the outer curved surface of all clamping plates.

[0008] Preferably, a protective pad is provided on the inner curved surface of each of the clamping arc pieces.

[0009] Preferably, the clip sleeve further includes a C-shaped top head, which is coaxially disposed in the connecting sleeve. The open end of the C-shaped top head is away from the ejector pin and is provided with multiple limiting blocks. The limiting blocks pass through the guide hole and are slidably mounted on the outer curved surface of the connecting sleeve. The locking sleeve can push the limiting blocks to move towards the ejector pin.

[0010] The guide hole is provided on the connecting sleeve and is located near the ejector pin.

[0011] Preferably, the end of the inner curved surface of the locking sleeve away from the ejector pin is provided with an inner convex limiting ring, which drives the limiting block to approach the ejector pin.

[0012] Preferably, the inner curved surface of the inner convex limiting ring is provided with thread three, and thread three is connected with thread four, which is provided on the outer curved surface of the connecting sleeve.

[0013] Preferably, the clamping device further includes two limiting holes, one limiting hole is disposed on the clamp sleeve and extends through to the matching support bracket, the clamp sleeve is threadedly connected to the matching support bracket, and the limiting hole is threadedly connected to a bolt.

[0014] Another limiting hole is provided on the ejector pin and connected to a matching support bracket. The ejector pin is threadedly connected to the matching support bracket, and the limiting hole is threaded with a bolt.

[0015] The beneficial effects of this utility model are as follows: The use of a clamping sleeve and an ejector pin ensures that the sapphire rod is always on the same axis, improving processing accuracy. The clamping sleeve of this utility model cooperates with a locking sleeve and a clamping jaw. The locking sleeve rotates and connects with the clamping jaw threadedly, causing the clamping jaw to tighten and lock, thus clamping and fixing the sapphire rod. The ejector pin further enhances the clamping stability of the sapphire rod, which is beneficial for rotating and polishing the sapphire rod. This utility model has a simple structure, is easy to use, and is easy to disassemble and replace, making it suitable for sapphire rods of various diameters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural diagram of the clip sleeve of this utility model;

[0018] Figure 3 This is a structural diagram of the ejector pin of this utility model;

[0019] Figure 4 This is a cross-sectional view of the clip sleeve of this utility model during installation;

[0020] Figure 5 This is a cross-sectional view of the ejector pin of this utility model during installation.

[0021] Figure 6 This is a cross-sectional view of the clip sleeve of this utility model when it is not installed;

[0022] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0023] Figure 8 This is a cross-sectional view of the ejector pin of this utility model when it is not installed.

[0024] In the diagram: 1. Base, 2. Pushing mechanism, 3. Support bracket, 4. Clamp sleeve, 41. Connecting sleeve seat, 42. Clamping claw, 43. Locking sleeve, 44. C-shaped top head, 441. Limiting block, 45. Protective pad, 5. Ejector pin, 51. Protective sleeve pad, 6. Limiting hole, 7. Rotation mechanism. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1 and Figure 2 As shown, the sapphire external cylindrical grinding clamping device provided by this utility model includes a base 1. A horizontally extendable pushing mechanism 2 is symmetrically arranged at both ends of the base 1. The moving ends of the pushing mechanisms 2 can move closer to or further apart from each other. The pushing mechanism 2 is prior art and is not the focus of this utility model; its ability to achieve horizontal extension is sufficient, so it will not be described in detail. Each moving end of the two pushing mechanisms 2 is equipped with a rotatable rotary mechanism 7. The axes of the two rotary mechanisms 7 are on the same straight line. The rotary mechanism 7 is prior art and is not the focus of this utility model; its ability to rotate is sufficient, so it will not be described in detail.

[0027] Example 1

[0028] This embodiment provides a sapphire external cylindrical grinding clamping device, including a base 1. A horizontally extendable pushing mechanism 2 is symmetrically arranged at both ends of the base 1. A rotatable rotary mechanism 7 is provided at the moving end of each pushing mechanism 2. A coaxial support bracket 3 is provided at the end of each rotary mechanism 7 away from the pushing mechanism 2. The axes of the two support brackets 3 are on the same straight line. A clamping sleeve 4 is fitted to one support bracket 3, and a ejector pin 5 is fitted to the other support bracket 3. The clamping sleeve 4 clamps one end of the sapphire rod to be processed, and the ejector pin 5 presses against the other end of the sapphire rod. The two rotary mechanisms 7 synchronously drive the sapphire rod to rotate for grinding. The axes of the clamping sleeve 4 and the ejector pin 5 are on the same straight line as the axes of the support bracket 3 and the rotary mechanism 7.

[0029] Specifically, the clamping sleeve 4 includes a coaxially arranged connecting sleeve 41, a clamping jaw 42, and a locking sleeve 43. One end of the connecting sleeve 41 is mounted on a matching support 3, and the other end of the connecting sleeve 41 is fixedly connected to the clamping jaw 42. The locking sleeve 43 is sleeved on the connecting sleeve 41 and the clamping jaw 42, and one end of the locking sleeve 43 is threaded to the connecting sleeve 41. One end of the connecting sleeve 41 is connected to the clamping jaw 42. The end of the clamping jaw 42 away from the connecting sleeve 41 is provided with circumferentially evenly arranged clamping arc pieces. When not subjected to external force, all the clamping arc pieces form a trumpet-shaped structure with a large opening at the end away from the connecting sleeve 41. That is, the inner diameter of the opening of the trumpet-shaped structure away from the connecting sleeve 41 is larger than the opening near the connecting sleeve 41. With a small inner diameter, the locking sleeve 43 has a cylindrical structure. As the locking sleeve 43 rotates, it gradually moves closer to the ejector pin 5, causing all the clamping plates to gradually tighten and converge, forming a smaller trumpet-shaped or cylindrical structure. After the sleeve clamping claw 42 is tightened, its inner diameter is slightly smaller than that of the sapphire rod. In this way, the locking sleeve 43 locks the sleeve clamping claw 42, so that the sapphire rod is clamped and fixed, and can always be on the same axis as the clamping sleeve 4. This ensures that the sapphire rod is always concentric with the ejector pin 5 during machining, improving machining accuracy. In addition, the locking sleeve 43 is connected by a rotating thread, making it convenient to lock or release the sleeve clamping claw 42, and the clamping sleeve 4 will not fail due to the failure of the push mechanism 2.

[0030] Specifically, to further improve the locking convenience of the locking sleeve 43 to the clamping jaws 42, an arc-inducing surface 43c is provided at the end of the inner curved surface of the locking sleeve 43 near the ejector pin 5, a pressure-guiding slope 43b is provided at the end of the arc-inducing surface 43c away from the ejector pin 5, and a pressing surface 43a is provided at the end of the pressure-guiding slope 43b away from the ejector pin 5. The pressing surface 43a is parallel to the axis. The arc-inducing surface 43c and the pressure-guiding slope 43b are used to initially tighten the clamping plate, and the pressing surface 43a is used to finally tighten the clamping plate. A thread 1 is connected at the end of the pressing surface 43a away from the ejector pin 5. All the outer curved surfaces of the clamping plates are provided with a thread 2 that mates with the thread 1. The locking sleeve 43 and the clamping jaws 42 are threadedly connected through the mating of the thread 1 and the thread 2, and the clamping jaws 42 are locked to clamp and fix the sapphire rod.

[0031] Specifically, an inner convex limiting ring is provided at the end of the inner curved surface of the locking sleeve 43 away from the ejector pin 5. The inner curved surface of the inner convex limiting ring is provided with thread three. Thread three and thread four are mutually compatible. Thread four is provided on the outer curved surface of the connecting sleeve 41 near the sleeve clamp 42. The locking sleeve 43 and the connecting sleeve 41 are threadedly connected through thread three and thread four, thereby realizing the threaded connection between the locking sleeve 43 and the connecting sleeve 41, further improving the stability of the locking sleeve 43 to the sleeve clamp 42.

[0032] The threaded connections involved in this embodiment are not shown in the relevant accompanying drawings.

[0033] Example 2

[0034] Based on Embodiment 1, in order to further improve the fit of the ejector pin 5, Embodiment 2 coaxially sets a C-shaped head 44 inside the connecting sleeve 41. The cross-section of the C-shaped head 44 is C-shaped, and the open end of the C-shaped head 44 is away from the ejector pin 5. The open end of the C-shaped head 44 is provided with multiple limiting blocks 441. Each limiting block 441 passes through the guide hole and is engaged between the locking sleeve 43 and the connecting sleeve 41. The limiting block 441 moves in the space corresponding to the thread 4. The limiting block 441 moves towards the ejector pin 5 by being pushed by the inner convex limiting ring of the locking sleeve 43. When the sleeve clamp 42 is locked, the C-shaped head 44 abuts against the sapphire rod. The C-shaped head 44 and the ejector pin 5 cooperate to better clamp the sapphire rod. The guide hole is set on the connecting sleeve 41 and is adapted to the position of the thread 4.

[0035] Example 3

[0036] Based on Embodiments 1 and 2, in order to further reduce the damage to the sapphire rod by the clip sleeve 4 and the ejector pin 5, this Embodiment 3 provides a protective pad 45 on the inner curved surface of each clip plate and a protective sleeve pad 51 on the top of the ejector pin 5.

[0037] Example 4

[0038] In this fourth embodiment, to accommodate sapphire rods of more diameters and facilitate the replacement of the clamp sleeve 4, the clamp sleeve 4 is threadedly connected to the matching support bracket 3. A limiting hole 6 is provided at the location where the clamp sleeve 4 and the support bracket 3 are connected, and the limiting hole 6 is threadedly connected to a bolt. This further improves the stability of the connection between the clamp sleeve 4 and the support bracket 3 and is also more conducive to locking and fixing the clamp sleeve 4. In addition, to better adapt the ejector pin 5 to the sapphire rod, the ejector pin 5 is also threadedly connected to the matching support bracket 3. A limiting hole 6 is also provided at the location where the ejector pin 5 and the support bracket 3 are connected, and the limiting hole 6 is threadedly connected to a bolt. This further improves the stability of the connection between the ejector pin 5 and the support bracket 3.

[0039] Specifically, a connecting thread five is provided on the inner circumferential surface of the connecting sleeve 41 away from the sleeve clamp 42, and a connecting thread six is ​​provided on the matching support 3. The clamp sleeve 4 and the matching support 3 are fixedly connected by the threaded connection of the connecting thread five and the connecting thread six. A threaded connection hole is provided in the ejector pin 5, and a connecting thread six is ​​also provided on the matching support 3. The connecting thread six is ​​rotated into the threaded connection hole for threaded connection. The ejector pin 5 and the matching support 3 are fixedly connected by the threaded connection of the threaded connection hole and the connecting thread six.

[0040] The threaded connections involved in this embodiment are not shown in the relevant accompanying drawings.

[0041] In use: Place one end of the sapphire rod into the clamping jaw 42, and rotate the locking sleeve 43 gradually towards the ejector pin 5, so that all the clamping plates gradually tighten and come together. The locking sleeve 43 locks the clamping jaw 42, thus clamping and fixing the sapphire rod. The pushing mechanism 2 pushes the ejector pin 5 to move and press the other end of the sapphire rod to be processed against it. The two rotating mechanisms 7 drive the sapphire rod to rotate and polish. The locking sleeve 43 is threadedly connected to the clamping jaw 42 through rotation and locks the clamping jaw 42, making the clamping effect of the sapphire rod better. The locking sleeve 43 and the ejector pin 5 work together to ensure that the sapphire rod is always on the same axis, which improves the processing accuracy and solves the problem of unstable fixing of the sapphire rod due to the failure of the pushing mechanism 2.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit and essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A clamping device for a sapphire external cylindrical grinding, comprising a base (1), characterized in that, Also include: Two push mechanism (2) are symmetrically arranged on both sides of the base (1); Two rotating mechanism (7) coaxially arranged, each of said rotating mechanism (7) is provided with a corresponding push mechanism (2) of the moving end; Two support bracket (3) are coaxially arranged with rotating mechanism (7), each of said support bracket (3) is provided with a corresponding rotating mechanism (7) on; Clamping sleeve (4) is adapted to be installed on a support bracket (3); The thimble (5) is adapted to be installed on the other support bracket (3), the clamping sleeve (4) and the thimble (5) cooperate.

2. The clamping device for grinding the outer circle of sapphire according to claim 1, wherein, The clamping sleeve (4) comprises: Connecting sleeve (41) is installed on the corresponding support bracket (3); Sleeve clamping jaw (42) is coaxially arranged on one end of the connecting sleeve (41) close to the thimble (5), the sleeve clamping jaw (42) is provided with a plurality of clamping arc pieces arranged uniformly around the one end close to the thimble (5), all the clamping arc pieces form a horn structure, and the opening inner diameter close to the thimble (5) is larger than the opening inner diameter away from the thimble (5), all the clamping arc pieces can be tightened under the action of external force; Locking sleeve (43) is a cylindrical structure, coaxially sleeved on the connecting sleeve (41) and the sleeve clamping jaw (42), one end of the locking sleeve (43) is threadedly connected with the connecting sleeve (41), the other end is threadedly connected with the sleeve clamping jaw (42), when the locking sleeve (43) rotates and moves towards the thimble (5), all the clamping arc pieces of the sleeve clamping jaw (42) move close to each other and tighten.

3. A clamping device for a sapphire external grinding according to claim 2, characterized in that The inner curved surface of the locking sleeve (43) is provided with a pressing surface (43a), a guide pressure inclined surface (43b) and an arc guide surface (43c) arranged in sequence from the direction away from the thimble (5) to the direction close to the thimble (5) at one end close to the thimble (5), the pressing surface (43a) is parallel to the axis.

4. The clamping device for grinding the outer circle of sapphire according to claim 3, wherein, The one end of the pressing surface (43a) close to the thimble (5) is connected with a thread one, the thread one is connected with a thread two, and the thread two is arranged on the outer curved surface of all the clamping arc pieces.

5. The clamping device for grinding the outer circle of sapphire according to claim 2, wherein, The inner curved surface of each clamping arc piece is provided with a protective pad (45).

6. The clamping device for grinding the outer circle of sapphire according to claim 2, wherein, The clamping sleeve (4) further comprises a C-shaped top head (44), and the C-shaped top head (44) is coaxially arranged in the connecting sleeve (41), the opening end of the C-shaped top head (44) is away from the thimble (5) and is provided with a plurality of limiting blocks (441), the limiting blocks (441) pass through the guide sliding hole and are clamped and slidably arranged on the outer curved surface of the connecting sleeve (41), the locking sleeve (43) can push the limiting blocks (441) to move towards the thimble (5); The guide sliding hole is arranged on the connecting sleeve (41) and is arranged at the position close to the thimble (5) of the connecting sleeve (41).

7. A clamping device for a sapphire external grinding according to claim 6, characterized in that The inner convex limit ring is arranged on the end of the inner curved surface of the locking sleeve (43) away from the thimble (5), the inner convex limit ring drives the limiting blocks (441) to be close to the thimble (5).

8. The clamping device for grinding the outer circle of sapphire according to claim 7, wherein, The inner curved surface of the inner convex limit ring is provided with a thread three, the thread three is connected with a thread four, and the thread four is arranged on the outer curved surface of the connecting sleeve (41).

9. The clamping device for grinding the outer circle of sapphire according to claim 1, wherein, Also include two limit hole (6), a limit hole (6) is arranged on the clamp cover (4) and through to the support bracket (3) which is adapted to it, the clamp cover (4) is threadedly connected with the support bracket (3) which is adapted to it, the limit hole (6) is threadedly connected with the bolt; Another limit hole (6) is arranged on the ejector pin (5) and to the support bracket (3) which is adapted to it, the ejector pin (5) is threadedly connected with the support bracket (3) which is adapted to it, the limit hole (6) is threadedly connected with the bolt.

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