Single crystal diamond clamping jig

Abstract

The utility model discloses a single crystal diamond clamping jig which comprises a mounting plate, at least three sets of clamping plates distributed in the circumferential direction of the mounting plate are arranged on the mounting plate, the clamping plates and the mounting plate are in sliding connection in the radial direction of the mounting plate, the single crystal diamond clamping jig comprises a wrapping air bag used for wrapping diamond, and the circumferential wall of the wrapping air bag is fixedly connected with the side walls of the clamping plates. The device further comprises a vacuum pump for vacuumizing the wrapping air bag, a one-way locking mechanism for limiting the clamping plate to move outwards in the radial direction of the mounting plate is arranged on the clamping plate, the diamond is wrapped in the wrapping air bag, the wrapping air bag is vacuumized, and therefore the wrapping air bag shrinks and wraps the surface of the diamond, and the diamond is clamped in the clamping plate. The contact area with the diamond is increased, and the stability of the diamond is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping jigs, in particular to a single crystal diamond clamping jig. Background Art

[0002] The preparation of diamonds mainly includes forming and post-processing; post-processing mainly refers to cutting or polishing the diamonds. In order to ensure the stability of the diamonds during the post-processing process, it is usually necessary to use a fixture to clamp the diamonds.

[0003] Under normal circumstances, single-crystal diamonds are clamped using two clamping plates that can be adjusted in position. The clamping plates squeeze the side walls of the single-crystal diamond, thereby improving the firmness of the single-crystal diamond. When using clamping plates to clamp diamonds, due to the diversity of single-crystal diamond surface shapes, the clamping plates can ensure the stability of the diamond when clamping diamonds with flat surfaces. When the clamping plates clamp diamonds with uneven surfaces, the line connecting the contact points of the clamping plates and the diamond deviates from the central axis of the diamond, which can easily cause the diamond to deflect. The contact area between the clamping plates and the diamond is small, resulting in poor firmness of the diamond.

[0004] Therefore, how to design a clamping fixture suitable for clamping irregular diamonds has become a technical problem that needs to be solved urgently by people in this field. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the present invention is to provide a single crystal diamond clamping fixture to solve the problem that diamonds with irregular surfaces are difficult to clamp.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A single-crystal diamond clamping fixture includes a mounting plate, on which are provided at least three groups of clamping plates distributed circumferentially along the mounting plate, the clamping plates being slidably connected to the mounting plate radially along the mounting plate, and comprising a wrapping airbag for wrapping diamonds, the circumferential wall of the wrapping airbag being fixedly connected to the side wall of the clamping plate, and a vacuum pump for evacuating the wrapping airbag, and a one-way locking mechanism for limiting the radial outward movement of the clamping plate along the mounting plate.

[0008] Furthermore, the one-way locking mechanism includes a lock tongue, a compression spring and a locking plate. The locking plate is mounted on the mounting plate and radially arranged along the mounting plate. A number of locking tooth grooves are provided on the locking plate. The lock tongue is rotatably connected to the clamping plate. One end of the compression spring abuts against the lock tongue, and the other end of the compression spring is mounted on the clamping plate. The compression spring pushes the lock tongue to be inserted into the locking tooth groove.

[0009] Furthermore, the locking tooth groove includes a guide sliding surface and a locking surface. The guide sliding surface is arranged at an angle, and the end of the guide sliding surface close to the axis of the mounting plate is higher than the end away from the axis of the mounting plate. The locking surface is arranged vertically. When the lock tongue is inserted into the locking tooth groove, the locking end of the lock tongue abuts against the locking surface.

[0010] Furthermore, a track is provided on the mounting plate, the track is arranged along the radial direction of the mounting plate, a mounting groove is provided in the track, the locking plate is installed in the mounting groove, and the side wall of the locking plate is slidably connected to the side wall of the mounting groove along the height direction of the track.

[0011] Furthermore, it also includes a limit mechanism that limits the flip angle of the lock tongue and an unlocking mechanism that drives the locking plate downward to release the one-way lock between the clamping plate and the mounting plate. The unlocking mechanism includes a screw that is threadedly connected to the mounting plate, and the end of the screw is rotatably connected to the bottom wall of the locking plate.

[0012] Furthermore, the limiting mechanism includes a limiting column, which is fixedly mounted on the side wall of the lock tongue, and the peripheral wall of the limiting column abuts against the top wall of the track.

[0013] Furthermore, a horizontally arranged positioning plate is fixed on the clamping plate, a positioning seat is fixed on the bottom wall of the positioning plate, the positioning seat is hinged to the lock tongue, one end of the compression spring abuts against the lock tongue, and the other end of the compression spring abuts against the bottom wall of the positioning seat.

[0014] Furthermore, a slide groove is provided on the side wall of the track, a downwardly extending mounting seat is fixedly provided on the clamping plate, a slider plugged into the slide groove is fixedly provided on the side wall of the mounting seat, and the slider is slidably connected to the slide groove.

[0015] Furthermore, the wrapped airbag is connected to a negative pressure pipe, and an air valve is installed on the negative pressure pipe.

[0016] Furthermore, a pushing cylinder is fixedly provided on the mounting plate, a pushing plate is provided on the wrapped airbag, and the pushing plate is fixedly connected to the pushing end of the pushing cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention wraps the diamond in a wrapping airbag and vacuums the wrapping airbag, thereby causing the wrapping airbag to shrink and wrap around the surface of the diamond, increasing the contact area with the diamond and enhancing the stability of the diamond; while the wrapping airbag shrinks, it drives the clamping plate to slide radially toward the diamond side along the mounting plate, and the diamond is clamped by the clamping plate. Since the one-way locking mechanism limits the clamping plate from moving radially outward along the mounting plate, the stability of the diamond can be further enhanced; compared with the traditional clamping solution using two clamping plates, this diamond clamping solution broadens the scope of application of diamonds. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the local structure;

[0021] Figure 4 Schematic diagram of the installation of the clamping plate;

[0022] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A in the middle;

[0023] Figure 6 for Figure 4 Schematic diagram of the expansion.

[0024] In the figure: 1. Mounting plate; 2. Wrapped airbag; 21. Negative pressure pipe; 22. Air valve; 3. Clamping plate; 31. Positioning plate; 311. Positioning seat; 312. Guide column; 32. Mounting seat; 321. Slider; 4. Track; 41. Slide groove; 42. Mounting groove; 5. One-way locking mechanism; 51. Lock tongue; 511. Limiting column; 52. Compression spring; 53. Locking plate; 531. Locking tooth groove; 6. Push cylinder; 61. Push plate; 7. Screw. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] This embodiment provides a single crystal diamond clamping jig, which is mainly used to expand the scope of application of diamond clamping and improve the firmness of diamond clamping.

[0027] like Figure 1 As shown, it includes a mounting plate 1, on which is provided a wrapping airbag 2 for wrapping diamonds, on which is provided a negative pressure pipe 21 and a vacuum pump for evacuating the wrapping airbag 2 through the negative pressure pipe 21, and on which are provided a plurality of clamping plates 3 which slide radially along the mounting plate 1, and on which are provided a plurality of tracks 4 which are radially arranged along the mounting plate 1, and the plurality of tracks 4 are circumferentially distributed along the mounting plate 1, the tracks 4 are slidably connected to the clamping plates 3, the outer wall of the wrapping airbag 2 is fixedly connected to the clamping plates 3, and a one-way locking mechanism 5 is provided between the tracks 4 and the clamping plates 3 to prevent the clamping plates 3 from moving radially outward along the tracks 4.

[0028] With the above settings, Figure 1 and Figure 2 As shown, when the diamond needs to be clamped, the diamond is placed inside the wrapping airbag 2, and then the wrapping airbag 2 is evacuated by a vacuum pump. During the vacuuming process, the wrapping airbag 2 gradually shrinks, thereby driving the clamping plate 3 to move radially inward along the track 4, so that the clamping plate 3 moves closer to the side of the diamond. As the vacuum pump continues to evacuate the wrapping airbag 2, the volume of the wrapping airbag 2 gradually shrinks, and the side wall of the clamping plate 3 will squeeze the diamond by squeezing the wrapping airbag 2, thereby achieving the clamping of the diamond. It is worth noting here that while the diamond is clamped by several clamping plates 3, the wrapping airbag 2 is wrapped on the outer wall of the diamond, increasing the contact area with the diamond and improving the firmness of the diamond.

[0029] It is worth mentioning that the method of wrapping and clamping diamonds using the wrapping airbag 2 can be applied to clamping diamonds of any shape, thereby expanding the scope of application of the clamping fixture.

[0030] In order to solve the problem of the vacuum pump continuously evacuating the wrapped airbag 2, in this embodiment, as shown in FIG. Figure 1 and Figure 2 As shown, an air valve 22 is installed on the negative pressure pipe 21. When the gas wrapped in the airbag 2 is completely extracted, the air valve 22 is closed and the vacuum pump can be removed from the negative pressure pipe 21 to avoid the existence of the vacuum pump affecting the subsequent processing of diamonds.

[0031] In order to make the end of the diamond extend beyond the end of the clamping plate 3 and facilitate the polishing process of the diamond, in this embodiment, Figure 1 and Figure 2 As shown, it also includes a pushing cylinder 6 fixed on the mounting plate 1, wherein a pushing plate 61 is installed on the bottom wall of the wrapped airbag 2. When the diamond is clamped by the wrapped airbag 2, the diamond is placed at the position of the pushing plate 61, and the pushing end of the pushing cylinder 6 is fixedly connected to the pushing plate 61.

[0032] Through the above arrangement, the telescopic length of the push cylinder 6 is controlled, and the diamond can be pushed by the push plate 61 to achieve position adjustment of the diamond.

[0033] In order to improve the firmness of the irregular diamond clamping, in this embodiment, as Figure 1 As shown, there are three groups of clamping plates 3, and the three groups of clamping plates 3 are evenly distributed around the circumference of the mounting plate 1. When clamping the diamond, the three groups of clamping plates 3 all move toward one side of the diamond and clamp the diamond.

[0034] In order to achieve stable sliding of the clamping plate 3, in this embodiment, as shown in FIG. Figure 4 、 Figure 5 and Figure 6 As shown, the side wall of the track 4 is provided with a slide groove 41 radially arranged along the mounting plate 1, and the clamping plate 3 is fixed with a mounting seat 32 extending vertically downward, wherein the side wall of the mounting seat 32 is fixed with a slider 321 inserted into the slide groove 41, and the side wall of the slider 321 is slidably connected to the inner wall of the slide groove 41.

[0035] In order to limit the radial outward movement of the clamping plate 3 along the track 4, in this embodiment, as shown in FIG. Figure 3 、 Figure 5 and Figure 6 As shown, the one-way locking mechanism 5 includes a lock tongue 51, a compression spring 52, and a locking plate 53, wherein the locking plate 53 is mounted on the track 4 and arranged along the radial direction of the mounting plate 1, and the locking plate 53 is provided with a plurality of locking tooth grooves 531 distributed along the radial direction of the mounting plate 1, as shown in FIG. Figure 3 As shown, the locking tooth groove 531 includes a guide sliding surface and a locking surface, wherein the guide sliding surface is inclined, the end of the guide sliding surface close to the axis of the mounting plate 1 is higher than the end away from the axis of the mounting plate, and the locking surface is vertically arranged, and the locking tongue 51 is rotatably connected to the clamping plate 3, one end of the compression spring 52 abuts against the locking tongue 51, and the other end is fixedly connected to the clamping plate 3, and the compression spring 52 is used to push the locking tongue 51 into the locking tooth groove 531 and make the end of the locking tongue 51 abut against the locking surface.

[0036] Through the above arrangement, when the clamping plate 3 moves along the track 4 toward the axis of the mounting plate 1, the locking tongue 51 abuts against the guide sliding surface of the locking tooth groove 531, as shown in FIG. Figure 3 As shown, as the clamping plate 3 moves, the locking tongue 51 rotates counterclockwise around the hinge point with the clamping plate 3, so that the locking end of the locking tongue 51 first disengages from the previous locking tooth groove 531, and then falls into the subsequent locking tooth groove 531, thereby enabling the clamping plate 3 to slide toward the axis of the mounting plate 1. When the clamping plate 3 tends to move away from the axis of the mounting plate 1, the locking end of the locking tongue 51 abuts against the locking surface, thereby limiting the movement of the clamping plate 3, thereby realizing unidirectional movement of the clamping plate 3.

[0037] It is worth noting that the front and rear of the locking tooth groove 531 are defined relative to the axis of the mounting plate 1 , with the side close to the axis of the mounting plate 1 being the rear end and the side away from the axis of the mounting plate 1 being the front end.

[0038] Specifically, in order to realize the installation of the compression spring 52, in this embodiment, as shown in FIG. Figure 3 and Figure 5As shown, a horizontally arranged positioning plate 31 is fixedly provided on the clamping plate 3, wherein a downwardly extending positioning seat 311 is fixedly provided on the bottom wall of the positioning plate 31, and the positioning seat 311 is hinged to the locking tongue 51, one end of the compression spring 52 abuts against the locking tongue 51, and the other end of the compression spring 52 abuts against the bottom wall of the positioning plate 31.

[0039] In order to enhance the stability of the compression spring 52, in this embodiment, as shown in FIG. Figure 3 and Figure 6 As shown, a guide column 312 is fixedly provided on the bottom wall of the positioning plate 31 , wherein the compression spring 52 is sleeved on the outside of the guide column 312 .

[0040] In order to achieve the installation of the locking plate 53, in this embodiment, a mounting groove 42 is provided in the track 4 and is radially arranged along the mounting plate 1, wherein the locking plate 53 is installed in the mounting groove 42, the side wall of the locking plate 53 abuts against the side wall of the mounting groove 42, and the locking plate 53 can slide up and down along the height direction of the track 4.

[0041] When the diamond is processed, in order to remove the diamond from the clamping fixture, it is first necessary to release the lock of the one-way locking mechanism 5 on the position of the clamping plate 3; then, move the clamping plate 3 to the side away from the axis of the mounting plate 1; secondly, open the air valve 22 and use the negative pressure pipe 21 to let air into the wrapping airbag 2 to release the wrapping of the diamond by the wrapping airbag 2; finally, take the diamond out of the wrapping airbag 2.

[0042] In order to release the locking of the clamping plate 3 by the one-way locking mechanism 5, in this embodiment, Figure 2 、 Figure 4 and Figure 6 As shown, a screw rod 7 is threadedly connected to the mounting plate 1 , one end of the screw rod 7 extends into the mounting groove 42 and is rotatably connected to the bottom wall of the locking plate 53 , and also includes a limiting mechanism for limiting the flipping angle of the lock tongue 51 .

[0043] Through the above arrangement, when it is necessary to release the lock of the clamping plate 3, the screw 7 is rotated at this time, thereby driving the locking plate 53 to move downward. Since the limiting mechanism limits the flipping angle of the lock tongue 51, the lock tongue 51 is moved out of the locking tooth groove 531 of the locking plate 53, thereby releasing the one-way lock of the clamping plate 3, allowing the clamping plate 3 to slide to the side away from the axis of the mounting plate 1.

[0044] Specifically, in order to limit the turning angle of the lock tongue 51, in this example, Figure 5 and Figure 5 Figure 6 As shown, a limiting column 511 is fixedly provided on the side wall of the lock tongue 51, wherein the peripheral wall of the limiting column 511 abuts against the top wall of the track 4, limiting the lock tongue 51 from further turning clockwise, thereby limiting the turning angle of the lock tongue 51.

[0045] It is worth mentioning that when the diamond needs to be clamped again, the locking plate 53 is pushed upward by the screw 7 so that the locking tongue 51 can be flipped into the locking tooth groove 531.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A single crystal diamond clamping fixture, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with at least three groups of clamping plates (3) distributed along the circumference of the mounting plate (1). The clamping plates (3) are connected to the mounting plate (1) in a radially sliding manner along the mounting plate (1). The clamping plates (3) include a wrapping airbag (2) for wrapping diamonds. The circumferential wall of the wrapping airbag (2) is fixedly connected to the side wall of the clamping plate (3). The clamping plate (3) also includes a vacuum pump for vacuuming the wrapping airbag (2). The clamping plate (3) is provided with a one-way locking mechanism (5) for limiting the clamping plate (3) from moving radially outward along the mounting plate (1).

2. The single crystal diamond clamping fixture according to claim 1, characterized in that: The one-way locking mechanism (5) comprises a locking tongue (51), a compression spring (52) and a locking plate (53). The locking plate (53) is mounted on the mounting plate (1) and radially arranged along the mounting plate (1). The locking plate (53) is provided with a plurality of locking tooth grooves (531). The locking tongue (51) is rotatably connected to the clamping plate (3). One end of the compression spring (52) abuts against the locking tongue (51). The other end of the compression spring (52) is mounted on the clamping plate (3). The compression spring (52) pushes the locking tongue (51) to be inserted into the locking tooth groove (531).

3. The single crystal diamond clamping fixture according to claim 2, characterized in that: The locking tooth groove (531) includes a guide sliding surface and a locking surface. The guide sliding surface is arranged obliquely, and the end of the guide sliding surface close to the axis of the mounting plate (1) is higher than the end away from the axis of the mounting plate (1). The locking surface is arranged vertically. When the lock tongue (51) is inserted into the locking tooth groove (531), the locking end of the lock tongue (51) abuts against the locking surface.

4. A single crystal diamond clamping fixture according to claim 2 or 3, characterized in that: A track (4) is provided on the mounting plate (1), the track (4) being arranged along the radial direction of the mounting plate (1), a mounting groove (42) being provided in the track (4), the locking plate (53) being installed in the mounting groove (42), and the side wall of the locking plate (53) being slidably connected to the side wall of the mounting groove (42) along the height direction of the track (4).

5. The single crystal diamond clamping fixture according to claim 4, characterized in that: The invention also includes a limiting mechanism for limiting the flipping angle of the lock tongue (51) and an unlocking mechanism for driving the locking plate (53) to move downward to release the one-way locking between the clamping plate (3) and the mounting plate (1). The unlocking mechanism includes a screw (7), the screw (7) is threadedly connected to the mounting plate (1), and the end of the screw (7) is rotatably connected to the bottom wall of the locking plate (53).

6. The single crystal diamond clamping fixture according to claim 5, characterized in that: The limiting mechanism comprises a limiting column (511), wherein the limiting column (511) is fixedly mounted on the side wall of the lock tongue (51), and the peripheral wall of the limiting column (511) abuts against the top wall of the track (4).

7. The single crystal diamond clamping fixture according to claim 3, characterized in that: A horizontally arranged positioning plate (31) is fixed on the clamping plate (3), a positioning seat (311) is fixed on the bottom wall of the positioning plate (31), the positioning seat (311) is hinged to the lock tongue (51), one end of the compression spring (52) abuts against the lock tongue (51), and the other end of the compression spring (52) abuts against the bottom wall of the positioning seat (311).

8. The single crystal diamond clamping fixture according to claim 4, characterized in that: The side wall of the track (4) is provided with a slide groove (41), the clamping plate (3) is fixedly provided with a mounting seat (32) extending downward, the side wall of the mounting seat (32) is fixedly provided with a slider (321) inserted into the slide groove (41), and the slider (321) is slidably connected to the slide groove (41).

9. The single crystal diamond clamping fixture according to claim 1, characterized in that: The wrapping airbag (2) is connected to a negative pressure pipe (21), and an air valve (22) is installed on the negative pressure pipe (21).

10. The single crystal diamond clamping fixture according to claim 1, characterized in that: A pushing cylinder (6) is fixedly provided on the mounting plate (1), a pushing plate (61) is provided on the wrapping air bag (2), and the pushing plate (61) is fixedly connected to the pushing end of the pushing cylinder (6).

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