Fixing device for precision bearing machining

Abstract

The utility model discloses a fixing device for precision bearing processing, which relates to the technical field of bearing processing and comprises a workbench, a protective sleeve fixedly connected to the top of the workbench, a clamping mechanism connected with the workbench and a limiting mechanism arranged at the top of the workbench. The clamping mechanism comprises a driving piece connected with the workbench, and a first clamping piece and a second clamping piece which are fixedly connected to the outer side wall of the driving piece and used for clamping the bearing. The limiting mechanism comprises a positioning plate fixedly connected to the top of the workbench and a guide rail arranged at the top of the workbench and used for limiting the clamping piece. According to the fixing device for precision bearing machining, the servo motor drives the forward and reverse thread ball screw to rotate, then the two clamping blocks are driven to move oppositely till the two travel switches are pressed down at the same time, and therefore the servo motor is turned off, the bearing clamping force is ensured, and the fixing device can be matched with bearings of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a fixing device for precision bearing processing. Background Art

[0002] Bearings are components that fix and reduce the load friction coefficient during mechanical transmission. In other words, when other parts move relative to each other on the shaft, they are used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. Bearing processing is the general term for the process of converting bearing raw materials or semi-finished products into target requirements through certain procedures and methods. Bearing parts need to be clamped during processing.

[0003] Most of the existing fixtures used for precision bearing parts processing are not convenient to adjust and can only fix bearing parts of fixed specifications. When fixing bearing parts of different specifications, it is necessary to replace fixtures of different specifications, which is very troublesome and not conducive to the processing of bearing parts of different specifications. Utility Model Content

[0004] The main purpose of the utility model is to provide a fixing device for precision bearing processing. By setting a clamping mechanism, the problem that only bearing parts of fixed specifications can be fixed, and when fixing bearing parts of different specifications, fixing devices of different specifications need to be replaced, which is very troublesome and not conducive to the processing of bearing parts of different specifications is solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fixing device for precision bearing processing, comprising a workbench and a protective sleeve fixedly connected to the top of the workbench, a clamping mechanism connected to the workbench, and a limiting mechanism arranged on the top of the workbench;

[0007] The clamping mechanism comprises a driving member connected to the workbench, and a first clamping member and a second clamping member fixedly connected to the outer side wall of the driving member for clamping the bearing;

[0008] The limiting mechanism comprises a positioning plate fixedly connected to the top of the workbench, and a guide rail arranged on the top of the workbench for limiting the clamping member.

[0009] Preferably, the driving member includes a servo motor fixedly connected to the outer side wall of the workbench, a forward and reverse ball screw fixedly connected to the output end of the servo motor, a hollow chamber opened inside the workbench, and a rectangular hole opened on the top of the workbench.

[0010] Preferably, the first clamping member includes a movable seat movably arranged on the outer side wall of the forward and reverse thread ball screw, a transmission block fixedly connected to the top of the movable seat, and a clamping block fixedly connected to the top of the transmission block.

[0011] Preferably, the first clamping member also includes a receiving groove opened on the outer side wall of the clamping block, a connecting spring fixedly connected to the bottom of the receiving groove, a movable block fixedly connected to the end surface of the connecting spring, and a travel switch installed on the inner side wall of the receiving groove.

[0012] Preferably, the second clamping member has the same structural composition as the first clamping member, and the two are symmetrically arranged with respect to the vertical mid-plane of the positive and negative thread ball screw.

[0013] Preferably, the clamping mechanism further comprises an electric push rod fixedly connected to the inner bottom wall of the protective sleeve, and a T-shaped stage fixedly connected to the output end of the electric push rod.

[0014] Preferably, the limiting mechanism further includes a fixing bolt penetrating through the positioning plate and threadedly connected to the positioning plate, a mounting groove provided at the bottom of the clamping block, and a roller rotatably connected to the inner side wall of the mounting groove.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the utility model, the T-type stage is driven to move by an electric push rod, and then the bearing is placed flat on the surface of the T-type stage, and the horizontal middle section of the bearing is opposite to the axis of the movable block, and then the servo motor is started, so that the servo motor drives the positive and negative tooth ball screw to rotate, and then drives the two movable seats to move toward each other, so as to drive the two clamping blocks to move toward each other through the two transmission blocks. In this process, the movable block will contact the outer surface of the bearing first, thereby pushing the movable block to compress the connecting spring until the movable block is against the travel switch. When the two travel switches are pressed at the same time, the servo motor will be turned off, so as to ensure the clamping force of the bearing, and can adapt to bearings of different sizes to improve the applicability of the device.

[0017] 2. In the utility model, by removing the fixing bolts, the guide rail can be pulled out and then cleaned or replaced. Then, the new guide rail is inserted into the inner wall of the positioning plate, and the outer wall of the guide rail is fit with the inner wall of the positioning plate, so as to position the guide rail. Then, the fixing bolts penetrate the positioning plate and are threadedly connected to the guide rail to fix the guide rail. Then, when the clamping block is moving, its roller will roll inside the guide rail, thereby ensuring that the clamping block makes horizontal linear motion. Since there is rolling friction between the roller and the guide rail, the wear on the guide rail can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 For this utility model Figure 1 A magnified schematic diagram of the structure of A;

[0020] Figure 3 This is a schematic diagram of the internal structure of the workbench of the utility model;

[0021] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the B structure;

[0022] Figure 5 For this utility model Figure 1 Schematic diagram of the side structure.

[0023] In the figure: 1. workbench; 2. protective sleeve; 301. servo motor; 302. positive and negative ball screw; 303. movable seat; 304. transmission block; 305. clamping block; 306. connecting spring; 307. movable block; 308. travel switch; 309. electric push rod; 310. T-type stage; 401. positioning plate; 402. guide rail; 403. fixing bolt; 404. roller. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] Embodiment 1: Figure 1-5 As shown, a fixture for precision bearing processing includes a workbench 1 and a protective sleeve 2 fixedly connected to the top of the workbench 1, a clamping mechanism connected to the workbench 1, and a limiting mechanism arranged on the top of the workbench 1;

[0026] The clamping mechanism includes a driving member connected to the workbench 1, and a first clamping member and a second clamping member fixedly connected to the outer side wall of the driving member for clamping the bearing;

[0027] The limiting mechanism includes a positioning plate 401 fixedly connected to the top of the workbench 1 , and a guide rail 402 arranged on the top of the workbench 1 for limiting the clamping member.

[0028] The driving component includes a servo motor 301 fixedly connected to the outer wall of the workbench 1, a positive and negative thread ball screw 302 fixedly connected to the output end of the servo motor 301, a hollow chamber opened inside the workbench 1, and a rectangular hole opened on the top of the workbench 1, wherein the rectangular hole is connected to the hollow chamber, and the positive and negative thread ball screw 302 is completely located inside the hollow chamber.

[0029] The first clamping member includes a movable seat 303 movably arranged on the outer side wall of the forward and reverse ball screw 302, a transmission block 304 fixedly connected to the top of the movable seat 303, and a clamping block 305 fixedly connected to the top of the transmission block 304, wherein the top end of the transmission block 304 extends to the outer surface of the workbench 1 through a rectangular hole, and the movable seat 303 is completely located inside the hollow chamber.

[0030] The first clamping member also includes a storage groove opened on the outer wall of the clamping block 305, a connecting spring 306 fixedly connected to the bottom of the storage groove, a movable block 307 fixedly connected to the end face of the connecting spring 306, and a travel switch 308 installed on the inner wall of the storage groove, wherein one end of the movable block 307 extends to the outer surface of the storage groove under the action of the connecting spring 306.

[0031] The second clamping member has the same structure as the first clamping member, and the two are symmetrically arranged about the vertical mid-plane of the positive and negative thread ball screw 302. When the two travel switches 308 are pressed at the same time, the servo motor 301 will be turned off.

[0032] The clamping mechanism also includes an electric push rod 309 fixedly connected to the inner bottom wall of the protective sleeve 2, and a T-shaped stage 310 fixedly connected to the output end of the electric push rod 309, wherein the outer diameter of the bottom end of the T-shaped stage 310 is equal to the inner diameter of the protective sleeve 2, and the central axis of the T-shaped stage 310 coincides with the vertical mid-plane of the positive and negative ball screw 302.

[0033] First, the electric push rod 309 is adjusted according to the thickness and size of the bearing to drive the T-stage 310 to move, and then the bearing is placed flat on the surface of the T-stage 310, and the horizontal middle section of the bearing is opposite to the axis of the movable block 307. Then the servo motor 301 is started, so that the servo motor 301 drives the positive and negative ball screw 302 to rotate, and then drives the two movable seats 303 to move towards each other, so as to drive the two clamping blocks 305 to move towards each other through the two transmission blocks 304. During this process, the movable block 307 will contact the outer surface of the bearing first, thereby pushing the movable block 307 to compress the connecting spring 306 until the movable block 307 abuts against the travel switch 308. When the two travel switches 308 are pressed at the same time, the servo motor 301 will be turned off to ensure the clamping force on the bearing, and it can adapt to bearings of different sizes to improve the applicability of the device.

[0034] Embodiment 2: Figure 1-5 As shown, a fixture for precision bearing processing includes a workbench 1 and a protective sleeve 2 fixedly connected to the top of the workbench 1, a clamping mechanism connected to the workbench 1, and a limiting mechanism arranged on the top of the workbench 1;

[0035] The clamping mechanism includes a driving member connected to the workbench 1, and a first clamping member and a second clamping member fixedly connected to the outer side wall of the driving member for clamping the bearing;

[0036] The limiting mechanism includes a positioning plate 401 fixedly connected to the top of the workbench 1 , and a guide rail 402 arranged on the top of the workbench 1 for limiting the clamping member.

[0037] The limiting mechanism also includes a fixing bolt 403 that passes through the positioning plate 401 and is threadedly connected to the positioning plate 401, a mounting groove opened at the bottom of the clamping block 305, and a roller 404 that is rotatably connected to the inner side wall of the mounting groove, wherein the bottom end of the roller 404 extends to the outer surface of the mounting groove and fits with the inner bottom wall of the guide rail 402, wherein the positioning plate 401 is a right-angle plate.

[0038] When the clamping block 305 is moving, its roller 404 will roll inside the guide rail 402, so as to ensure that the clamping block 305 moves horizontally and linearly. Since there is rolling friction between the roller 404 and the guide rail 402, the wear on the guide rail 402 can be reduced.

[0039] When the inside of the guide rail 402 is covered with dust and needs to be cleaned or replaced, the guide rail 402 can be pulled out by removing the fixing bolt 403, and then it can be cleaned or replaced. The new guide rail 402 is then plugged into the inner wall of the positioning plate 401, and the outer wall of the guide rail 402 is made to fit the inner wall of the positioning plate 401, thereby positioning the guide rail 402. The fixing bolt 403 penetrates the positioning plate 401 and is threadedly connected to the guide rail 402, thereby fixing the guide rail 402.

Claims

1. A fixture for precision bearing processing, comprising a workbench (1) and a protective sleeve (2) fixedly connected to the top of the workbench (1), characterized in that: It also includes a clamping mechanism connected to the workbench (1), and a limiting mechanism arranged on the top of the workbench (1); The clamping mechanism comprises a driving member connected to the workbench (1), and a first clamping member and a second clamping member fixedly connected to an outer side wall of the driving member for clamping the bearing; The limiting mechanism comprises a positioning plate (401) fixedly connected to the top of the workbench (1), and a guide rail (402) arranged on the top of the workbench (1) for limiting the position of the clamping member.

2. A fixture for precision bearing processing according to claim 1, characterized in that: The driving member comprises a servo motor (301) fixedly connected to the outer wall of the workbench (1), a forward and reverse threaded ball screw (302) fixedly connected to the output end of the servo motor (301), a hollow chamber opened inside the workbench (1), and a rectangular hole opened on the top of the workbench (1).

3. A fixture for precision bearing processing according to claim 2, characterized in that: The first clamping member comprises a movable seat (303) movably arranged on the outer side wall of the forward and reverse ball screw (302), a transmission block (304) fixedly connected to the top of the movable seat (303), and a clamping block (305) fixedly connected to the top of the transmission block (304).

4. A fixture for precision bearing processing according to claim 3, characterized in that: The first clamping member further comprises a receiving groove formed on the outer side wall of the clamping block (305), a connecting spring (306) fixedly connected to the bottom of the receiving groove, a movable block (307) fixedly connected to the end surface of the connecting spring (306), and a travel switch (308) mounted on the inner side wall of the receiving groove.

5. A fixture for precision bearing processing according to claim 4, characterized in that: The second clamping member has the same structural component as the first clamping member, and the two are symmetrically arranged with respect to the vertical mid-plane of the positive and negative thread ball screw (302).

6. A fixture for precision bearing processing according to claim 5, characterized in that: The clamping mechanism further comprises an electric push rod (309) fixedly connected to the inner bottom wall of the protective sleeve (2), and a T-shaped platform (310) fixedly connected to the output end of the electric push rod (309).

7. A fixture for precision bearing processing according to claim 6, characterized in that: The limiting mechanism further comprises a fixing bolt (403) penetrating the positioning plate (401) and threadedly connected to the positioning plate (401), a mounting groove provided at the bottom of the clamping block (305), and a roller (404) rotatably connected to the inner side wall of the mounting groove.

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