CN210909545U

CN210909545U - Clamp for machining outer circle of ceramic bearing ring

Info

Publication number: CN210909545U
Application number: CN201921907761.XU
Authority: CN
Inventors: 孙健; 高龙飞; 杜德忱; 王浩; 吴玉厚; 田军兴; 王贺
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-07-03
Anticipated expiration: 2029-11-07

Abstract

The utility model discloses an anchor clamps for processing ceramic bearing ring excircle, including mandrel and baffle, the screw has been seted up to the upper surface center department of mandrel, and workpiece clamping groove has been seted up to the lateral wall of mandrel, and the joint has the work piece in the workpiece clamping groove, and baffle and the inseparable laminating of work piece, the center department of baffle run through there is the bolt of spiro union in the screw. The utility model discloses a set up the mandrel and support the work piece, make the atress of work piece more even when the grinding, it is little to warp, and then can obtain good size precision and surface quality. The workpiece discharge chutes which are uniformly distributed are arranged, so that the tension of the cutting fluid on the surface of the end face of the workpiece is reduced, the workpiece is easy to disassemble, the structure is simple, the universality is good, and the maintenance and the replacement are convenient. Through the cooperation of balance groove and balancing piece, reduce the beating that the mandrel brought because of the mass distribution is uneven when rotating to improve the dimensional accuracy and the surface quality when cutting the work piece excircle.

Description

Clamp for machining outer circle of ceramic bearing ring

Technical Field

The utility model relates to a ceramic bearing processing technology field specifically is an anchor clamps for processing ceramic bearing ring excircle.

Background

At present, when the outer circle of a ceramic bearing ring is ground, the clamping mode adopted is single. When the ceramic bearing ring is machined, the ceramic bearing ring is clamped and fixed by the inner three-jaw chuck, the bearing ring is stressed unevenly in the circumferential direction, machining deformation is serious, residual stress of a workpiece is high, the machining circumferential size precision is low, the machining precision requirement of the high-precision ceramic bearing cannot be met, the material adopted by the clamp is mainly high-speed tool steel, abrasion is serious in repeated workpiece assembling and disassembling, the tolerance requirement cannot be met due to the matching of a mandrel and the workpiece, the grinding precision of the ring is directly influenced, the size precision of a product is reduced, the ceramic material is easily damaged in a brittle manner, and the rejection rate is increased. For the processing of the large-scale bearing outer ring, the traditional steel bearing adopts vertical turning and splicing type assembly. And for the ceramic outer ring, the method is not suitable for processing the outer circular surface of the outer ring in a turning mode with low rotating speed. For this purpose, we propose a fixture for machining the outer circle of the ceramic bearing ring.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor clamps for processing ceramic bearing ring excircle to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a anchor clamps for processing ceramic bearing lasso excircle, includes mandrel and baffle, the screw has been seted up to the upper surface center department of mandrel, workpiece clamping groove has been seted up to the lateral wall of mandrel, and the joint has the work piece in the workpiece clamping groove, baffle and the inseparable laminating of work piece, the bolt of spiro union in the screw has been run through to the center department of baffle.

Preferably, the outer side wall of the mandrel is integrally formed with a fixing ring, the upper surface of the fixing ring is provided with a balance groove, and a balance block is assembled in the balance groove.

Preferably, the balance weight comprises an outer balance weight and an inner balance weight, and a fastening screw is assembled between the outer balance weight and the inner balance weight.

Preferably, a spring gasket and a flat gasket are sequentially assembled between the bolt and the baffle plate from top to bottom.

Preferably, the side wall of the baffle is provided with a half-through opening.

Preferably, the side wall of the mandrel is provided with a workpiece discharge chute.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the mandrel and support the work piece, make the atress of work piece more even when the grinding, it is little to warp, and then can obtain good size precision and surface quality.

2. The utility model discloses be provided with evenly distributed's work piece blowpit on the mandrel, when having reduced the cutting fluid to the tension on work piece end surface, make the work piece easily dismantle, simple structure, commonality are better, are convenient for maintain and replace.

3. The utility model discloses a set up the cooperation of balancing tank and balancing piece, reduce the beating that the mandrel brought because of the mass distribution is uneven when rotating to size precision and surface quality when improving the cutting work piece excircle.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic view of the balance weight structure of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

In the figure: 1. mandrel, 2, baffle, 3 screw holes, 4, workpiece clamping groove, 5, workpiece, 6, bolt, 7, fixing ring, 8, balance groove, 9, balance block, 91, outer balance block, 92, inner balance block, 10, fastening screw, 11, spring gasket, 12, flat gasket, 13, semi-through opening, 14 and workpiece discharging groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2 and fig. 3, the present invention provides a technical solution: the utility model provides a anchor clamps for processing ceramic bearing lasso excircle, includes mandrel 1 and baffle 2, and mandrel 1 and baffle 2 all adopt POM engineering plastics to make and form, and this material has that rigidity is big, and dimensional stability is good, wear-resisting characteristic, has effectively guaranteed clamping precision and machining size precision to when effectively preventing to contact with ceramic material, cause brittle failure to ceramic material. The engineering plastic has better mechanical property than the traditional high-speed tool steel, obviously takes the advantage of the same volume and quality compared with the tool steel, and plays a vital role in light weight production. Because the deformation of ceramic materials such as silicon nitride is small during processing, the good elastic coefficient of the engineering plastics can absorb part of processing vibration and deformation, the processing precision is improved, the dimensional precision of the workpiece 5 is ensured, and the brittle damage to the engineering ceramic materials in the contact process is avoided. The POM engineering plastic has the advantages of light overall mass, small rotational inertia, high rigidity, capability of ensuring processing precision during trace grinding, and good surface processing quality of the ceramic bearing ring. When the device is used for clamping workpieces, the operation is simple and convenient, the structure is simple, the automatic centering function is realized, the clamping positioning precision is high, the machining efficiency is greatly improved, the machining is easy, the service life is long, the universality is strong, and the flexibility is high.

The side wall of the baffle plate 2 is provided with a half through hole 13, so that the baffle plate 2 can be detached through the half through hole 13 structure in the process of detaching the bearing ring of the workpiece 5, and the bearing ring of the workpiece 5 can be conveniently installed in the machining process.

Screw 3 has been seted up at the upper surface center department of mandrel 1, workpiece clamping groove 4 has been seted up to the lateral wall of mandrel 1, and the joint has work piece 5 in the workpiece clamping groove 4, baffle 2 and the inseparable laminating of work piece 5, the center department of baffle 2 runs through the bolt 6 of spiro union in screw 3, bolt 6 is the hex bolts, baffle 2 passes through the hex bolts and is fixed with mandrel 1, can suitable adjustment pretightning force, avoid work piece 5 to produce great axial prestressing force and because the pretightning force is less to cause the clamping of work piece 5 not hard up, in-process of carrying out the clamping to work piece 5, play axial positioning action, when the work piece 5 of the same model carries out the clamping, need not every time relocating, save time, and the production efficiency is improved. Be equipped with spring shim 11 and flat gasket 12 from last to down in proper order between bolt 6 and baffle 2, guaranteed the fastening of bolt 6 and baffle 2 through setting up spring shim 11 and flat gasket 12, as shown in fig. 1, it has work piece blowoff groove 14 to extend the axial distribution on the shaft shoulder of mandrel 1, the quantity of work piece blowoff groove 14 is four, conveniently dismantle work piece 5 after processing is accomplished, the cooperation tolerance of mandrel 1 and the fitting surface of work piece 5 is for excessively cooperating, prevent to have radial drunkenness with work piece 5 man-hour, machining precision has been guaranteed. The rear end of the mandrel 1 is clamped on a vertical grinding machine workbench.

Outer side wall integrated into one piece of mandrel 1 has solid fixed ring 7, gu fixed ring 7's upper surface has seted up the balancing groove 8, be equipped with balancing piece 9 in the balancing groove 8, balancing piece 9 includes outer balancing piece 91 and interior balancing piece 92, be equipped with fastening screw 10 between outer balancing piece 91 and the interior balancing piece 92, the inside wall of interior balancing piece 92 and balancing groove 8 is equipped with assorted inclined plane, put into balancing groove 8 earlier with interior balancing piece 92 when the installation, make two inclined planes laminate mutually, then put into corresponding position with outer balancing piece 91 again, insert fastening screw 10 between interior balancing piece 92 and outer balancing piece 91, fix the position of balancing piece 9, when adjusting the balancing piece position, screw 10 out, the inside and outside balancing piece clearance diminishes, can slide in balancing groove 8, through the cooperation that sets up balancing groove 8 and balancing piece 9, realize this device at the pivoted in-process, and (4) adjusting balance.

The working principle is as follows: the utility model discloses when using, regard as the support work piece with mandrel 1, with work piece 5 the surface of the internal diameter laminating mandrel 1 of ceramic bearing lasso promptly, the terminal surface of work piece 5 supports the shaft shoulder, reuse baffle 2 supports another terminal surface of work piece 5, and press from both sides tightly with bolt 6, make work piece 5 obtain fixing, on the vertical grinding machine workstation is fixed in to the 1 other end of mandrel, use the relative position of dynamic balancing appearance adjustment balancing piece 9, make mandrel 1 beat and maintain reasonable interval, by fastening screw 10 fixed position. During machining, the outer circumferential surface of the workpiece 5 is ground.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a anchor clamps for processing ceramic bearing ring excircle which characterized in that: the novel mandrel is characterized by comprising a mandrel (1) and a baffle (2), a screw hole (3) is formed in the center of the upper surface of the mandrel (1), a workpiece clamping groove (4) is formed in the side wall of the mandrel (1), a workpiece (5) is clamped in the workpiece clamping groove (4), the baffle (2) is tightly attached to the workpiece (5), and a bolt (6) screwed in the screw hole (3) penetrates through the center of the baffle (2).

2. The fixture for processing the outer circle of the ceramic bearing ring according to claim 1, wherein: the outer side wall of the mandrel (1) is integrally formed with a fixing ring (7), the upper surface of the fixing ring (7) is provided with a balance groove (8), and a balance block (9) is assembled in the balance groove (8).

3. The jig for processing the outer circle of the ceramic bearing ring according to claim 2, wherein: the balance weight (9) comprises an outer balance weight (91) and an inner balance weight (92), and a fastening screw (10) is assembled between the outer balance weight (91) and the inner balance weight (92).

4. The fixture for processing the outer circle of the ceramic bearing ring according to claim 1, wherein: and a spring gasket (11) and a flat gasket (12) are sequentially assembled between the bolt (6) and the baffle plate (2) from top to bottom.

5. The fixture for processing the outer circle of the ceramic bearing ring according to claim 1, wherein: and a half through hole (13) is formed in the side wall of the baffle (2).

6. The fixture for processing the outer circle of the ceramic bearing ring according to claim 1, wherein: the side wall of the mandrel (1) is provided with a workpiece discharge chute (14).