Single-point diamond turning adsorption tool

Abstract

The utility model discloses a single-point diamond turning adsorption tool, which relates to the technical field of precision machining of optical instruments and particularly comprises a seat body, a contraction ring and a cover body. The seat body comprises a clamping bottom plate and a locking ring arranged on the clamping bottom plate; the locking ring is of a circular structure, a plurality of first elastic open grooves are evenly distributed in the periphery of the locking ring, a conical part is arranged on the top of the locking ring, and a first positioning part matched with the contraction ring is arranged on the inner wall of the locking ring. A plurality of second elastic open grooves are evenly distributed in the periphery of the contraction ring, and a second positioning part matched with the machined part is arranged in the contraction ring. The cover body is of a circular tubular structure and is detachably connected to the base body, and an inclined opening matched with the conical part is formed in the inner wall of the cover body. The utility model provides a single-point diamond turning adsorption tool which can ensure that the center of the tool coincides with the center of a machined part and enables the deformation of the tool on the part to be as small as possible or to be uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instrument precision machining, in particular to a single-point diamond turning adsorption tooling. Background Art

[0002] The single-point diamond lathe used in the field of optical ultra-precision machining can directly obtain higher surface accuracy and surface quality by machining flat surfaces, aspheric surfaces, free-form surfaces, off-axis paraboloids, tire surfaces and other reflectors.

[0003] The metal reflector single-point diamond cutting technology is aimed at materials with higher strength. During the processing, the workpiece needs to be fixed. In order to improve the processing accuracy, the tooling for fixing the workpiece needs to be reliable to ensure that the workpiece will not fall off the tooling during the processing. At the same time, the tooling also needs a smaller clamping force or a uniform clamping force to make the parts bear less force or uniform force. Even if the parts are deformed, the deformation is as uniform as possible. In traditional technology, the single-point diamond machine tool spindle is a pneumatic adsorption spindle, which can more effectively reduce the deformation of parts and tooling, and can make the tooling center coincide with the spindle center as much as possible by punching. At this time, we only need to make the tooling center coincide with the workpiece center as much as possible when solving the problem, and make the deformation of the parts caused by the tooling as small as possible or uniform deformation. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a single-point diamond turning adsorption tooling, which can ensure that the tooling center coincides with the center of the workpiece, and makes the deformation of the part caused by the tooling as small as possible or uniform deformation.

[0005] The utility model is realized through the following technical solutions:

[0006] A single-point diamond turning adsorption tooling, comprising a seat body, a shrinking ring and a cover body; the seat body comprises a clamping base plate and a locking ring arranged on the clamping base plate; the locking ring is a circular structure, with a plurality of first elastic opening grooves evenly distributed around it, a conical portion is provided on the top, and a first positioning portion adapted to the shrinking ring is provided on the inner wall of the locking ring; a plurality of second elastic opening grooves are evenly distributed around the shrinking ring, and a second positioning portion adapted to the workpiece is provided inside; the cover body is a circular tubular structure, which can be detachably connected to the seat body, and an oblique opening adapted to the conical portion is provided on the inner wall of the cover body; in the present technical solution, the shrinking ring is used to place the workpiece, and it is clamped in the locking ring as an independent component, and shrinking rings with different inner diameters can be selected according to the different diameters of the workpiece, so as to avoid processing multiple sets of tooling and shorten the product processing cycle. , reducing the cost of fixture processing and the space usage caused by fixture placement; the second elastic opening groove provided on the shrink ring can make the shrink ring have both rigidity and uniform deformation when the whole body is squeezed, so as to clamp and fix the workpiece and make the center of the shrink ring coincide with the center of the workpiece; the first elastic opening groove is provided on the locking ring, which can make the locking ring have both rigidity and uniform deformation when the whole body is squeezed, thereby exerting an effect on the shrink ring so that the center of the locking ring coincides with the center of the shrink ring; the top of the locking ring is provided with a tapered portion, and the inner wall of the cover body is provided with an oblique mouth matched with the tapered portion. When the cover body is fixed to the locking ring, the oblique mouth evenly generates radial extrusion force on the inner tapered portion during axial movement.

[0007] Preferably, the root of the locking ring is provided with an external thread, and the cover body is provided with an internal thread that matches the external thread; in the present technical solution, the locking ring and the cover body are fixed by a threaded connection, which has a simple structure and is easy to process. The cover body can be axially moved by rotation, which is convenient for construction personnel to operate.

[0008] Preferably, the second elastic opening groove includes elastic outer opening grooves evenly distributed on the outside of the shrink ring and elastic inner opening grooves evenly distributed on the inside of the shrink ring; the elastic outer opening grooves and the elastic inner opening grooves are arranged at intervals; in the present technical solution, the shrink ring is provided with elastic opening grooves on the inside and outside, which can reduce the force required for its own deformation and reduce the construction difficulty on the one hand, and can make itself deform more evenly when squeezed by the surrounding body, so as to ensure the uniformity of force on the workpiece.

[0009] Further preferably, the depth of the elastic outer opening groove and the elastic inner opening groove is greater than half of the wall thickness of the cover body; in the present technical solution, it can be ensured that the deformation ranges of the elastic outer opening groove and the elastic inner opening groove have overlapping parts, further ensuring that they can deform more evenly when squeezed by the surrounding body, so as to ensure the uniformity of force on the workpiece.

[0010] Preferably, the first positioning portion is a first positioning shoulder provided on the inner wall of the locking ring; in the present technical solution, the first positioning portion adopts a shoulder positioning form, which can facilitate processing while ensuring that the center of the locking ring coincides with the center of the shrink ring.

[0011] Further preferably, the depth of the first positioning shoulder is less than the depth of the first elastic opening groove; in the present technical solution, the depth of the first positioning shoulder is less than the depth of the first elastic opening groove, so that the shrink ring can be completely placed within the deformation range of the first elastic opening groove to ensure the uniformity of the force on the shrink ring.

[0012] Preferably, the second positioning portion is a second positioning shoulder provided on the inner wall of the shrink ring; in the present technical solution, the second positioning portion adopts a shoulder positioning form, which can facilitate processing while ensuring that the center of the workpiece coincides with the center of the shrink ring.

[0013] Preferably, the clamping base plate is a circular structure, and the center line of the clamping base plate coincides with the center line of the locking ring; in the present technical solution, the circular structure of the clamping base plate can facilitate the use of a meter to determine the coincidence of the center of the tooling and the center of the spindle during the rotation process.

[0014] The beneficial effects of the utility model are: 1. The shrinking ring in the tooling is used to place the workpiece, and it is clamped in the locking ring as an independent component. Shrinking rings with different inner diameters can be selected according to the different diameters of the workpiece, avoiding the processing of multiple sets of tooling, shortening the product processing cycle, reducing the cost of fixture processing, and reducing the space usage caused by the placement of the fixture; 2. The shrinking ring in the tooling is provided with elastic opening grooves on the inside and outside, which can reduce the force required for its own deformation and reduce the construction difficulty on the one hand, and can make itself deform more evenly when squeezed by the surrounding body, so as to ensure the uniformity of the force on the workpiece; 3. The locking ring of the tooling is fixed to the cover body by a threaded connection, and the axial movement of the cover body can be realized by rotation, and the locking of the workpiece can be realized by squeezing the tapered part by the oblique mouth. It has a simple structure, low processing difficulty and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a single-point diamond turning adsorption tooling described in Example 1;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of a single-point diamond turning adsorption tooling described in Example 1;

[0017] Figure 3 It is a structural schematic diagram of the seat body described in Example 1;

[0018] Figure 4It is a structural schematic diagram of the cover body described in Example 1;

[0019] Figure 5 It is a schematic diagram of the structure of the shrink ring described in Example 1;

[0020] In the figure: 1. seat body; 11. clamping base plate; 12. locking ring; 121. first elastic opening groove; 122. first positioning portion; 123. tapered portion; 124. external thread; 2. cover body; 21. oblique mouth; 22. internal thread; 3. shrink ring; 31. second elastic opening groove; 311. elastic inner opening groove; 312. elastic outer opening groove; 32. second positioning portion; 4. processed part. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0022] like Figures 1 to 5As shown, a single-point diamond turning adsorption tooling includes a seat body 1, a shrink ring 3 and a cover body 2; the seat body 1 includes a clamping base plate 11 and a locking ring 12 arranged on the clamping base plate; the clamping base plate is a circular structure, and the center line of the clamping base plate coincides with the center line of the locking ring, so as to facilitate the use of a meter to determine the coincidence of the tooling center and the spindle center during the rotation of the tooling; the locking ring 12 is a circular structure, and is evenly distributed with a plurality of first elastic opening grooves 121, a conical portion 123 is provided on the top, and the inner wall of the locking ring is provided with a first elastic opening groove 121 that matches the shrink ring The shrink ring 3 is provided with a plurality of second elastic opening grooves 31, and a second positioning portion 32 adapted to the processing piece 4 is provided inside; the cover body 2 is a circular tubular structure, which is detachably connected to the seat body 1. Specifically, the locking ring 12 and the cover body 2 are fixed by threaded connection, and the root of the locking ring 12 is provided with an external thread 124, and the cover body 2 is provided with an internal thread 22 adapted to the external thread; the inner wall of the cover body 2 is provided with an oblique opening 21 adapted to the conical portion, wherein the shrink ring 3 is used to place the processing piece 4, which is used as an independent The parts are clamped in the locking ring 12, and the shrinking ring 3 with different inner diameters can be selected for replacement according to the different diameters of the workpiece 4, avoiding the processing of multiple sets of tooling, shortening the product processing cycle, reducing the cost of fixture processing, and reducing the space usage caused by the placement of the fixture; the second elastic opening groove 31 provided on the shrinking ring 3 can make the shrinking ring have both rigidity and can be uniformly deformed when the whole body is squeezed, so as to clamp and fix the workpiece 4, and make the center of the shrinking ring 3 coincide with the center of the circular workpiece; the locking ring 12 is provided with The first elastic opening groove 121 can make the locking ring 12 have rigidity and, when the whole body is squeezed, can undergo a large and uniform deformation, thereby exerting an effect on the shrink ring 3, so that the center of the locking ring 12 coincides with the center of the shrink ring 3; the top of the locking ring 12 is provided with a tapered portion 123, and the inner wall of the cover body 2 is provided with an oblique mouth 21 adapted to the tapered portion. When the cover body is fixed to the locking ring, the oblique mouth 21 evenly generates a radial extrusion force on the inner tapered portion 123 during the axial movement, thereby controlling the shrink ring 3 to lock the workpiece 4.

[0023] Preferably, the second elastic opening groove 31 includes elastic outer opening grooves 312 uniformly distributed on the outside of the shrink ring and elastic inner opening grooves 311 uniformly distributed on the inside of the shrink ring; the elastic outer opening grooves 312 and the elastic inner opening grooves 311 are arranged at intervals, and the shrink ring 3 is provided with elastic opening grooves on the inside and outside, which can reduce the force required for its own deformation and reduce the construction difficulty on the one hand, and can make itself deform more evenly when being squeezed by the surrounding body, so as to ensure the uniformity of the force on the workpiece; in order to further ensure the uniformity of the force on the workpiece, the elastic outer opening grooves 312 and the elastic inner opening grooves 311 are arranged at intervals. The depth of the opening groove 311 is greater than half of the wall thickness of the cover body 2, so that the deformation range of the elastic outer opening groove and the elastic inner opening groove have an overlapping part, and when the elastic outer opening groove is squeezed by the surrounding body, it can deform more evenly; in order to facilitate the processing of parts, the first positioning portion 122 is a first positioning shoulder provided on the inner wall of the locking ring, and the second positioning portion 32 is a second positioning shoulder provided on the inner wall of the shrink ring; in order to further ensure the uniformity of the force on the shrink ring 3, the depth of the first positioning shoulder is less than the depth of the first elastic opening groove, so that the shrink ring can be completely placed within the deformation range of the first elastic opening groove.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A single-point diamond turning adsorption tool, characterized in that: It includes a seat body, a shrinking ring and a cover body; the seat body includes a clamping base plate and a locking ring arranged on the clamping base plate; the locking ring is a circular structure, with a plurality of first elastic opening grooves evenly distributed around the body, a conical portion is provided on the top, and a first positioning portion adapted to the shrinking ring is provided on the inner wall of the locking ring; a plurality of second elastic opening grooves are evenly distributed around the shrinking ring, and a second positioning portion adapted to the processing piece is provided inside; the cover body is a circular tubular structure, which can be detachably connected to the seat body, and the inner wall of the cover body is provided with an oblique mouth adapted to the conical portion.

2. The single-point diamond turning adsorption tooling according to claim 1, characterized in that: The root of the locking ring is provided with an external thread, and the cover body is provided with an internal thread matched with the external thread.

3. The single-point diamond turning adsorption tooling according to claim 1, characterized in that: The second elastic opening grooves include elastic outer opening grooves uniformly distributed on the outer side of the shrink ring and elastic inner opening grooves uniformly distributed on the inner side of the shrink ring; the elastic outer opening grooves and the elastic inner opening grooves are arranged at intervals.

4. The single-point diamond turning adsorption tooling according to claim 3, characterized in that: The depth of the elastic outer opening groove and the elastic inner opening groove is greater than half of the wall thickness of the cover body.

5. The single-point diamond turning adsorption tooling according to claim 1, characterized in that: The first positioning portion is a first positioning shoulder provided on the inner wall of the locking ring.

6. The single-point diamond turning adsorption tooling according to claim 5, characterized in that: The depth of the first positioning shoulder is less than the depth of the first elastic opening groove.

7. The single-point diamond turning adsorption tooling according to claim 1, characterized in that: The second positioning portion is a second positioning shoulder provided on the inner wall of the shrink ring.

8. The single-point diamond turning adsorption tooling according to claim 1, characterized in that: The clamping base plate is in a circular structure, and the center line of the clamping base plate coincides with the center line of the locking ring.

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