Clamping device for grinding outer surface of transmission shaft retainer

Abstract

The invention relates to a clamping device for grinding an outer shape surface of a transmission shaft retainer in a car constant velocity universal joint, which comprises a connecting plate, a magnetizer, a machine tool body, a main shaft of a machine tool, a clamping assembly A and a clamping assembly B. The connecting plate is fixedly connected with the machine tool body, an arc notch is arranged on the connecting plate, the magnetizer is positioned in the arc notch, the magnetizer is fixedly connected with the main shaft of the machine tool, and the clamping assembly A and the clamping assembly B are arranged on the connecting plate. The clamping assembly A comprises a supporting rod A, a screw D, a rotating shaft A, a supporting head A and an alloy block A. The clamping assembly B comprises a supporting rod B, a screw C, a rotating shaft B, a supporting head B and an alloy block B. The supporting head A and the supporting head B rotate around the rotating shaft A and the rotating shaft B on the supporting rod A and the supporting rod B correspondingly, so that the alloy block A and the alloy block B make full contact with the appearance face of the retainer. The grinding precision of the retainer is ensured, meanwhile, it is ensured that the grinding device is convenient to adjust, and the grinding precision and working efficiency are improved.

Description

Technical Field

[0001] The invention relates to a clamping device for grinding the outer surface of a transmission shaft retainer, belonging to the field of clamps for grinding. Background Art

[0002] The transmission shaft of the car constant velocity universal joint is composed of a fixed end section, an intermediate shaft and a movable end section, wherein the fixed end section is directly connected to the wheel hub of the car wheel, and the movable end section is directly connected to the differential of the engine. The power of the engine is transmitted to the wheel through the differential, the movable end section, the intermediate shaft, the fixed end section and the wheel hub, thereby driving the wheel to rotate. The fixed end section is mainly composed of an outer ring, a retainer, an inner ring and a steel ball; the movable end section is mainly composed of an outer sleeve, a retainer, an inner sleeve and a steel ball. The outer surface of the retainer is matched with the inner surface of the outer ring or the outer sleeve, and the precision requirement is relatively high, that is, not only the center distance of the outer surface requires high precision, but also the contour and surface roughness of the outer surface require high precision. If the precision of the outer surface is not up to standard, the retainer will be easily worn, shortening the service life of the retainer and causing abnormal noise. In the past, the clamp used for grinding the outer surface of the cage was: the plane of the alloy block in the horizontal and vertical directions was in contact with the outer surface of the cage, and the alloy block in the vertical direction was fixed and could not be rotated. This clamping and adjustment method was inconvenient, the support was unstable, and it was easy to cause the center size of the outer surface of the cage to be out of tolerance. In addition, the outer surface of the cage was easily scratched at the contact point between the alloy block and the outer surface of the cage, and the high-precision requirements could not be met. Therefore, a clamping device that can be easily adjusted during the grinding of the outer surface of the cage and can ensure the grinding accuracy of the outer surface of the cage is urgently needed at the processing site. Summary of the invention

[0003] The purpose of the present invention is to provide a clamping device for grinding the outer surface of a transmission shaft retainer. Using this technology, when grinding the outer surface of the retainer, the clamping device can be easily adjusted, the support stability can be improved, and the grinding accuracy of the outer surface of the retainer can be guaranteed.

[0004] The technical solution of the present invention is: a clamping device for grinding the outer surface of a transmission shaft retainer, comprising a connecting plate, a magnet, a machine tool body, a main shaft of the machine tool, a clamping assembly A, and a clamping assembly B. The connecting plate is fixedly connected to the machine tool body, and a circular arc notch is provided on the connecting plate. The magnet is located in the circular arc notch, and the magnet is fixedly connected to the main shaft of the machine tool. The clamping assembly A comprises a support rod A, a screw D, a rotating shaft A, a support head A, and an alloy block A. The support rod A is installed on the connecting plate, and a through slot A is provided on the support rod A. The screw D passes through the through slot A on the support rod A and is fixedly connected to the connecting plate. The upper end of the support rod A is fixedly connected to the rotating shaft A, and the support head A is rotatably connected to the rotating shaft A. The support head A is fixedly connected to the alloy block A, a notch A is formed on the alloy block A, and a contact surface A matching and corresponding to the outer surface of the retaining frame is provided on the alloy block A; the clamping assembly B comprises a support rod B, a screw C, a rotating shaft B, a support head B, and an alloy block B. The support rod B is mounted on a connecting plate, a through slot B is formed on the support rod B, the screw C passes through the through slot B on the support rod B and is fixedly connected to the connecting plate, the upper end of the support rod B is fixedly connected to the rotating shaft B, the support head B is rotatably connected to the rotating shaft B, the support head B is fixedly connected to the alloy block B, a notch B is formed on the alloy block B, and a contact surface B matching and corresponding to the outer surface of the retaining frame is provided on the alloy block B.

[0005] The support head A is provided with a screw B, the support rod A is provided with a blind hole A, the blind hole A is provided with a spring A, the spring A is opposite to the screw B, the support head B is provided with a screw G, the support rod B is provided with a blind hole B, the blind hole B is provided with a spring B, the spring B is opposite to the screw G.

[0006] The connecting plate is provided with an arc-shaped T-shaped slot in the horizontal direction, and the screw C passes through the through slot B on the supporting rod B and is fixedly connected with the arc-shaped T-shaped slot.

[0007] There are two arc-shaped T-shaped grooves.

[0008] The principle of the present invention is that the support head A and the support head B can rotate around the rotating shaft A and the rotating shaft B on the support rod A and the support rod B respectively, so that the alloy block A and the alloy block B are fully in contact with the outer surface of the retainer, and the springs A and the springs B on the support rod A and the support rod B make the alloy block A and the alloy block B close to the outer surface of the retainer, and at the same time, the contact surface A and the contact surface B on the alloy block A and the alloy block B that are consistent with the outer surface of the retainer are completely in contact with the outer surface of the retainer, so that the outer surface of the retainer is very stable during grinding, and the outer surface of the retainer will not be scratched, so that the retainer obtains a higher grinding accuracy. The through groove A on the support rod A is convenient for adjusting the upper and lower positions of the support rod A, that is, the upper and lower positions where the alloy block A contacts the outer surface of the retainer, and the through groove B on the support rod B is convenient for adjusting the left and right positions of the support rod B, that is, the left and right positions where the alloy block B contacts the outer surface of the retainer. At the same time, the arc-shaped T-shaped groove on the connecting plate is convenient for adjusting the angle position between the support rod B and the horizontal direction, that is, ensuring the stability of the grinding of the outer surface of the retainer.

[0009] The advantages of the present invention are that the contact surfaces of the alloy block in the horizontal and vertical directions can be completely matched with the outer surface of the retaining frame, thereby ensuring the grinding accuracy of the retaining frame. At the same time, the through grooves and arc-shaped T-slots ensure that the grinding device is easy to adjust, which not only ensures the grinding accuracy of the retaining frame and improves the yield rate, but also improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a clamping device for grinding the outer surface of a transmission shaft retainer of the present invention.

[0011] Figure 2 yes Figure 1 Right view of .

[0012] Figure 3 yes Figure 1 AA section view in.

[0013] Figure 4 It is a schematic diagram of the structure of the cage.

[0014] Figure 5 yes Figure 4 Right view of .

[0015] Figure 6 yes Figure 1 Enlarged view of part I.

[0016] Figure 7 yes Figure 3 Enlarged view of part II.

[0017] In the figure: 1 slot A, 2 contact surface A, 3 arc notch, 4 slot B, 5 contact surface B, 6 screw C, 7 through slot B, 8 machine tool body, 9 connecting plate, 10 support rod B, 11 arc T-slot, 12 blind hole B, 13 spring B, 14 screw G, 15 shaft B, 16 support head B, 17 screw F, 18 alloy block B, 19 cage, 20 magnetic conductor, 21 screw E, 22 alloy block A, 23 screw A, 24 shaft A, 25 support head A, 26 screw B, 27 spring A, 28 blind hole A, 29 support rod A, 30 screw D, 31 through slot A, 32 spindle, 33 positioning surface, 34 small chamfer, 35 reference surface, 36 window, 37 cage outer surface, 38 inner cylindrical surface, 39 large chamfer, 40 outer surface center. DETAILED DESCRIPTION

[0018] The present invention is a clamping device for grinding the outer surface of the transmission shaft retainer in a car constant velocity universal joint. Figure 1-7 Specifically describe the embodiments of the present invention, the present invention includes a connecting plate 9, a magnet 20, the connecting plate 9 is fixedly connected to the machine tool body 8, the connecting plate 9 is provided with an arc notch 3, the magnet 20 is located in the arc notch 3 of the connecting plate 9, and the magnet 20 is fixedly connected to the spindle 32 of the machine tool by a screw E21; the connecting plate 9 has two arc T-shaped slots 11 in the horizontal direction, the support rod B10 is fixedly connected to the arc T-shaped slot 11 of the connecting plate 9 by a screw C6, the connecting plate 9 vertical direction support rod A29 is fixedly connected to the connecting plate 9 by a screw D30, the support rod A29 is provided with a through groove A31, the support head A25 is rotatably connected to the support rod A29 by a rotating shaft A24, the rotating shaft A24 is fixedly connected to the support rod A29, the rotating shaft A24 is rotatably connected to the support head A25, the alloy block A22 is fixedly connected to the support head A25 by a screw A23, a notch A1 is provided on the alloy block, and the alloy block A22 is provided with Contact surface A2, the shape of which is consistent with the shape of the retaining frame outer surface 37, a screw B26 is installed on the support head A25, a blind hole A28 is provided on the support rod A29, a spring A27 is installed in the blind hole A28, and the spring A27 is opposite to the screw B26; a through groove B7 is provided on the support rod B10, the support head B16 is rotatably connected to the support rod B10 through the rotating shaft B15, the rotating shaft B15 is fixedly connected to the support rod B10, the rotating shaft B15 is rotatably connected to the support head B16, the alloy block B18 is fixedly connected to the support head B16 through the screw F17, a notch B4 is provided on the alloy block B18, a contact surface B5 is provided on the alloy block B18, the shape of which is consistent with the shape of the retaining frame outer surface, a screw G14 is installed on the support head B16, a blind hole B12 is provided on the support rod B10, a spring B13 is installed in the blind hole B12, and the spring B13 is opposite to the screw G14.

[0019] The retainer 19 is a thin-walled part, usually with six or eight windows 36, which are used to keep the steel balls on the same plane. The retainer outer surface 37 is usually composed of an arc or a straight line + an arc or a straight line + an arc + a straight line. In order to easily identify the reference surface 35 of the retainer 19, a small chamfer 34 and a large chamfer 39 are usually processed on the inner cylindrical surface 38, and the side of the small chamfer 34 is selected as the reference surface 35 of the retainer 19.

[0020] The working process of the present invention is as follows: first, an electrode with the same shape as the outer surface 37 of the retainer is manufactured, so that the center lines of the support rod A29 and the support head A25 are the same and the two are relatively fixed, and the alloy block A22 of the support head A25 is electro-discharged with the electrode so that the contact surface A2 of the alloy block A22 has the same curved surface as the outer surface 37 of the retainer, so that the contact surface A2 and the outer surface 37 of the retainer are completely matched, and play a stabilizing role during support; the support rod B10, the support head B16 and the alloy block B18 are electro-discharged using the same processing method as above, so that the contact surface B5 of the alloy block B18 has the same curved surface as the outer surface 37 of the retainer, so that the contact surface B5 and the outer surface 37 of the retainer are completely matched, and play a stabilizing role during support. After electro-discharge machining, the relative fixed relationship between the support rod A29 and the support head A25 is removed, and similarly, the relative fixed relationship between the support rod B10 and the support head B16 is removed.

[0021] Prepare a holder with a completely qualified holder profile 37 as an adjustment sample, make the reference surface 35 of the adjustment sample contact with the positioning surface 33 of the magnet 20, start the equipment, make the spindle 32 rotate at a low speed, energize the magnet 20 and attract the adjustment sample, use the magnetic meter stand and lever dial indicator to adjust the sample, so that the diameter jump of the holder profile 37 when the sample rotates with the magnet 20 is less than 0.003mm, loosen the screw D30, move the support rod A29 so that the support head A25 The contact surface A2 of the alloy block A22 is completely in contact with the outer surface 37 of the holder of the sample, and then the screw D30 is tightened; similarly, the screw C6 is loosened, and the support rod B10 is moved so that the contact surface B5 of the alloy block B18 on the support head B16 is completely in contact with the outer surface 37 of the holder of the sample, and the support rod B10 is moved in the arc-shaped T-slot 11, so that the contact surface B5 of the alloy block B18 is in stable contact with the outer surface 37 of the holder during the rotation of the adjustment sample, and then the screw C6 is tightened. The spindle 32 is turned off, the magnetizer 20 is powered on and stopped, and the sample is removed.

[0022] The spindle 32 is started, and the swing-arm robot loads the material. The retainer 19 with the contour surface to be ground is placed on the positioning surface 33 of the magnetizer 20. The retainer 19 is attracted by the magnetic force, and the grinding wheel starts to rotate to grind the retainer contour surface 37. The alloy block A22 and the alloy block B18 match and support the retainer contour surface 37 until the retainer contour surface 37 is ground. The swing-arm robot takes away the ground retainer 19, and then loads a retainer 19 to be ground, and enters the next processing cycle...

[0023] In order to make the schematic diagram clearer, the schematic diagram of the swing arm robot is omitted in the figure.

[0024] If the center between the two alloy blocks A22 is inconsistent with the center 40 of the outer surface of the sample, a gasket can be added between the support rod A29 and the connecting plate 9 for adjustment, or the contact surface of the support rod A29 and the connecting plate 9 can be ground off to a certain thickness to make the center between the two alloy blocks A22 consistent with the center 40 of the outer surface of the sample.

[0025] If the center between the two alloy blocks B18 is inconsistent with the center 40 of the outer surface of the sample, a gasket can be added between the support rod B10 and the connecting plate 9 for adjustment, or the contact surface of the support rod B10 and the connecting plate 9 can be ground off to a certain thickness to make the center between the two alloy blocks B18 consistent with the center 40 of the outer surface of the sample.

Claims

1. A clamping device for grinding the outer surface of a transmission shaft retainer, characterized in that: The invention comprises a connecting plate (9), a magnet (20), a machine tool body (8), a main shaft (32) of the machine tool, a clamping assembly A, and a clamping assembly B. The connecting plate (9) is fixedly connected to the machine tool body (8). The connecting plate (9) is provided with an arc notch (3). The magnet (20) is located in the arc notch (3). The magnet (20) is fixedly connected to the main shaft (32) of the machine tool. The clamping assembly A comprises a support rod A (29), a screw D (30), a rotating shaft A (24), a support head A (25), and an alloy block A (22); the support rod A (29) is mounted on the connecting plate (9); a through slot A (31) is formed on the support rod A (29); a screw D (30) passes through the through slot A (31) on the support rod A and is fixedly connected to the connecting plate (9); the upper end of the support rod A (29) is fixedly connected to the rotating shaft A (24); the support head A (25) is rotatably connected to the rotating shaft A (24); the support head A (25) is fixedly connected to the alloy block A (22); The alloy block A (22) is fixedly connected, the alloy block A (22) is provided with a notch A (1), and the alloy block A (22) is provided with a contact surface A (2) matching and corresponding to the outer surface of the retainer; the clamping assembly B comprises a support rod B (10), a screw C (6), a rotating shaft B (15), a support head B (16), and an alloy block B (18), the support rod B (10) is installed on the connecting plate (9), and the support rod B (10) is provided with a through slot B(7), a screw C(6) passes through the through slot B(7) on the support rod B and is fixedly connected to the connecting plate, the upper end of the support rod B(10) is fixedly connected to the rotating shaft B(15), the support head B(16) is rotatably connected to the rotating shaft B(15), the support head B(16) is fixedly connected to the alloy block B(18), a notch B(4) is formed on the alloy block B(18), and a contact surface B(5) matching and opposite to the outer surface of the retaining frame is provided on the alloy block B(18).

2. The clamping device for grinding the outer surface of the transmission shaft retainer according to claim 1 is characterized in that: The support head A (25) is provided with a screw B (26), the support rod A (29) is provided with a blind hole A (28), the blind hole A (28) is provided with a spring A (27), the spring A (27) is opposite to the screw B (26), the support head B (16) is provided with a screw G (14), the support rod B (10) is provided with a blind hole B (12), the blind hole B (12) is provided with a spring B (13), the spring B (13) is opposite to the screw G (14).

3. The clamping device for grinding the outer surface of the transmission shaft retainer according to claim 1, characterized in that: The connecting plate (9) is provided with an arc-shaped T-shaped slot (11) in the horizontal direction, and the screw C (6) passes through the through slot B (7) on the supporting rod B and is fixedly connected to the arc-shaped T-shaped slot (11).

4. The clamping device for grinding the outer surface of the transmission shaft retainer according to claim 3 is characterized in that: There are two arc-shaped T-shaped grooves (11).

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