Thin-wall bearing grinding floating supporting device

Abstract

A thin-wall bearing grinding floating supporting device comprises an electromagnetic clamp used for adsorbing the end face of a thin-wall bearing, two supporting units distributed in the circumferential direction of the electromagnetic clamp at intervals are arranged on one side of the electromagnetic clamp, and the supporting units are connected with a grinding machine through a base. Each supporting unit comprises a first floating head rotationally connected with the base through a first pin shaft, and the axis of the first pin shaft is parallel to the axis of the electromagnetic clamp. One side of the first floating head is provided with two second floating heads which are distributed in the circumferential direction of the electromagnetic clamp at intervals and make contact with the outer side wall of the thin-wall bearing, each second floating head is rotationally connected with the first floating head through a second pin shaft, and the axis of each second pin shaft is parallel to the axis of the electromagnetic clamp. The first floating bearing and the second floating bearing are rotationally arranged, so that in the rotating process of the thin-wall bearing, the second floating head is always in contact with the outer side wall of the thin-wall bearing, and deformation of the outer side wall of the thin-wall bearing cannot be caused.

Description

Technical Field

[0001] The utility model relates to the technical field of thin-wall bearing processing, in particular to a thin-wall bearing grinding floating support device. Background Art

[0002] Electromagnetic centerless clamps are a widely used processing technology in bearing grinding. Their working principle mainly relies on electromagnetic force to adsorb the end face of the workpiece to the driving end face of the clamp. During operation, the eccentricity between the center of the workpiece and the rotation center of the clamp driving end face is relied on to make the outer cylindrical surface of the workpiece close to the upper and lower supports to complete the grinding operation. The upper and lower supports are mostly fixed.

[0003] Thin-walled bearings are widely used in many fields such as industrial robots, aviation, and aerospace. The cross-sectional area of ​​thin-walled bearings is small, resulting in very small radial wall thickness, poor rigidity, and easy to produce large radial deformation. Therefore, when grinding using the above method, the upper and lower supports are likely to cause the outer wall of the thin-walled bearing to become elliptical, rounded, and the end face warped. Utility Model Content

[0004] In order to solve the problem of deformation easily occurring during the grinding process of thin-walled bearings in the prior art, the utility model provides a floating support device for grinding thin-walled bearings, which improves the efficiency and quality of thin-walled bearing grinding.

[0005] In order to achieve the above-mentioned purpose, the specific scheme adopted by the utility model is: a floating support device for grinding thin-walled bearings, including an electromagnetic clamp for adsorbing the end face of the thin-walled bearing, one side of the electromagnetic clamp is provided with two support units distributed along its circumference, the support unit is connected to the grinding bed through a base, each of the support units includes a first floating head rotatably connected to the base through a first pin shaft, and the axis of the first pin shaft is parallel to the axis of the electromagnetic clamp; one side of the first floating head is provided with two second floating heads distributed along the circumference of the electromagnetic clamp and in contact with the outer wall of the thin-walled bearing, each second floating head is rotatably connected to the first floating head through a second pin shaft, and the axis of the second pin shaft is parallel to the axis of the electromagnetic clamp.

[0006] As an optimization solution for the above-mentioned thin-walled bearing grinding floating support device: two support bodies corresponding to the first floating heads are provided on the base, the first pin shaft is fixedly connected to the support body, and the first floating head is rotatably connected to the first pin shaft.

[0007] As another optimization solution of the above-mentioned floating support device for grinding thin-walled bearings: a first groove with an opening toward the center of the electromagnetic clamp is formed at one end of the support body, and the middle part of the first floating head extends into the first groove.

[0008] As another optimization solution of the above-mentioned floating support device for grinding thin-walled bearings: a first spring for supporting the first floating head is provided in the first groove.

[0009] As another optimization solution for the above-mentioned thin-walled bearing grinding floating support device: the base is provided with a plurality of arc-shaped grooves, the center line of the arc-shaped grooves coincides with the center line of the electromagnetic clamp, and the support body is provided with a first slider that slides along the arc-shaped grooves and can be fixed.

[0010] As another optimization solution of the above-mentioned floating support device for grinding thin-walled bearings: the first slider is provided with a plurality of sliding grooves, and a second slider that slides along the sliding grooves and can be fixed is fixedly connected to the support body.

[0011] As another optimization solution for the above-mentioned floating support device for thin-walled bearing grinding: the first floating head is provided with two second grooves with openings facing the center of the electromagnetic clamp, the second grooves correspond one-to-one to the second floating heads, and the side of the second floating head facing away from the center of the electromagnetic clamp extends into the second groove.

[0012] As another optimization solution of the above-mentioned floating support device for grinding thin-walled bearings: a second spring for supporting the second floating head is provided in the second groove.

[0013] As another optimization scheme of the above-mentioned thin-walled bearing grinding floating support device: a first accommodating hole is provided at the bottom of the second groove, a second accommodating hole is provided at the part of the second floating head located in the second groove, one end of the second spring is fixed in the first accommodating hole, and the other end of the second spring is fixed in the second accommodating hole.

[0014] As another optimization solution of the above-mentioned floating support device for grinding thin-walled bearings: the end surface of the second floating head that contacts the outer wall of the thin-walled bearing is covered with a flexible material.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The utility model provides a floating support device for grinding medium-thin-wall bearings, wherein a first floating head is rotatably connected to a support body, and a second floating head is arranged on the first floating head and can rotate. The rotation arrangement of the first floating bearing and the second floating bearing ensures that during the rotation of the thin-wall bearing, the second floating head is always in contact with the outer wall of the thin-wall bearing and will not cause deformation of the outer wall of the thin-wall bearing.

[0017] 2. In the present invention, the support body and the base are connected via a first slider and an arc-shaped slide groove, and the distance between the two support units can be adjusted to accommodate thin-walled bearings of different diameters, which is the applicability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

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

[0020] Figure markings: 1. Base, 101. Arc-shaped slide groove, 2. Clamp, 201. Adsorption surface, 3. Thin-walled bearing, 4. First floating head, 401. Second groove, 402. First pin shaft, 403. Second spring, 5. Second floating head, 501. Flexible material, 502. Second pin shaft, 503. First spring, 6. First slider, 601. Sliding groove, 7. Support body, 701. First groove, 702. Second slider. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further elaborated in detail below in conjunction with specific embodiments. The parts that are not described and disclosed in detail in the following embodiments of the present invention should be understood as existing technologies known or should be known to those skilled in the art, such as how to install the electromagnetic clamp 2 on the grinding bed, how to install the first pin shaft 402 and the second pin shaft 502, etc.

[0022] Example 1

[0023] A floating support device for grinding thin-walled bearings includes an electromagnetic fixture 2 for adsorbing the end face of a thin-walled bearing 3. The electromagnetic fixture 2 is a cylindrical structure and is fixed on a grinding bed. The electromagnetic fixture 2 has an adsorption surface 201. Before grinding the thin-walled bearing 3, the thin-walled bearing 3 is fixed on the adsorption surface 201. Specifically, one end face of the thin-walled bearing 3 is adsorbed on the end face of the electromagnetic fixture 2 by relying on electromagnetic force. One side of the electromagnetic fixture 2 is provided with two support units distributed at intervals along its circumference. The support unit is located on the side where the electromagnetic fixture 2 adsorbs the end face of the thin-walled bearing 3, such as Figure 2 As shown, one of the support units is located below the thin-walled bearing 3, and the other support unit is located on the right side of the thin-walled bearing 3. The support unit is connected to the grinding bed through the base 1, that is, the support unit is arranged on the base 1, and the base 1 is connected to the grinding bed. In this embodiment, the base 1 includes a base plate fixedly connected to the grinding bed and a mounting plate perpendicular to the base plate. The base plate and the grinding bed are connected by bolts, and the mounting plate and the base plate are connected as an integral whole. The edge of the mounting plate close to the electromagnetic clamp 2 is arc-shaped, and the axis of the arc edge coincides with the axis of the electromagnetic clamp 2.

[0024] Each support unit includes a first floating head 4 rotatably connected to the base 1 via a first pin 402. The first floating head 4 includes a central portion with two ends bent toward the center of the electromagnetic clamp 2 to form a bent portion. The axis of the first pin 402 is parallel to the axis of the electromagnetic clamp 2. Specifically, the base 1 is provided with two support bodies 7 corresponding to the first floating heads 4. The first pin 402 is fixedly connected to the support bodies 7, and the first floating head 4 is rotatably connected to the first pin 402. In this embodiment, the support bodies 7 have a square cross-section and are connected to the mounting plate. The connection method between the support body 7 and the first floating head 4 is that one end of the support body 7 is provided with a first groove 701 with an opening toward the center of the electromagnetic clamp 2, the middle part of the first floating head 4 extends into the first groove 701, the first groove 701 is a U-shaped groove, the side wall of the first groove 701 is provided with a through hole, the first pin shaft 402 and the through hole are interference fit to realize the fixed connection between the first pin shaft 402 and the support body 7, the bottom end of the central part of the first floating head 4 extends into the first groove 701 and is rotatably connected to the first pin shaft 402, and the bottom end of the central part and the bottom of the first groove 701 have a movable gap for the first floating head 4 to rotate, as shown in FIG. Figure 2 As shown, during the rotation of the first floating head 4 , the bottom end of the central portion will contact the bottom of the first groove 701 , thereby limiting the rotation angle of the first floating head 4 .

[0025] Two second floating heads 5 are provided on one side of the first floating head 4, spaced apart along the circumference of the electromagnetic clamp 2 and contacting the outer wall of the thin-walled bearing 3. The end surfaces of the second floating heads 5 that contact the outer wall of the thin-walled bearing 3 are covered with a flexible material 501. Each second floating head 5 is rotatably connected to the first floating head 4 via a second pin 502, with the axis of the second pin 502 parallel to the axis of the electromagnetic clamp 2. The first floating head 4 has two second grooves 401 with openings facing the center of the electromagnetic clamp 2. The second grooves 401 correspond one-to-one with the second floating heads 5, and the side of the second floating head 5 facing away from the center of the electromagnetic clamp 2 extends into the second grooves 401. In this embodiment, the second grooves 401 are provided on the bent portion of the first floating head 4. The second pin 502 is fixedly connected to the first floating head 4, and the second floating heads 5 are rotatably connected to the second pin 502. The middle part of the second floating head 5 extends into the second groove 401, and there is a movable gap between its bottom end and the bottom of the second groove 401 for the second floating head 5 to rotate. During the rotation of the second floating head 5, the bottom end of the second floating head 5 will contact the bottom of the second groove 401, thereby limiting the rotation angle of the second floating head 5.

[0026] During the grinding process of the thin-walled bearing 3, since the first floating head 4 and the second floating head 5 are rotated, the second floating head 5 is always in contact with the outer wall of the thin-walled bearing 3 and does not generate an extrusion force on the thin-walled bearing 3, thereby preventing the thin-walled bearing 3 from being deformed.

[0027] The above is a basic implementation of the present invention, which can be further improved, optimized and limited to obtain the following embodiments:

[0028] Example 2

[0029] This embodiment is an improved solution for a thin-walled bearing grinding floating support device based on embodiment 1. Its main structure is the same as that of embodiment 1, and the improvements are as follows: Figure 1 As shown, the base 1 is provided with a plurality of arcuate chutes 101, the number of which ranges from 1 to 4. In this embodiment, the number of the arcuate chutes 101 is two and they are spaced apart along the radial direction of the electromagnetic clamp 2. The arcuate chutes 101 are provided on the mounting plate, and the centerline of the arcuate chutes 101 coincides with the centerline of the electromagnetic clamp 2. A first slider 6 is provided on the support body 7, which slides along the arcuate chutes 101 and can be fixed. The first slider 6 includes a first portion parallel to the mounting plate and a first portion perpendicular to the mounting plate. The first portion and the second portion are integrally connected. The first portion can slide along the arcuate chutes 101 and can be fixed, and the second portion is connected to the support body 7.

[0030] The support body 7 and the first slider 6 are arranged in such a manner that the first slider 6 is provided with a plurality of sliding grooves 601, and the number of the sliding grooves 601 is 1-4. In this embodiment, the number of the sliding grooves 601 is 3 and they are radially spaced along the electromagnetic clamp 2. The sliding grooves 601 are provided in the second part, and a second slider 702 that slides along the sliding groove 601 and can be fixed is fixedly connected to the support body 7. In this embodiment, the second slider 702 can be a bolt, and the head of the bolt is located in the sliding groove 601. The tail of the bolt is connected to a nut after passing through the support body 7. The nut is loosened to move the support body 7 to the desired position, and then the nut is tightened to fix the support body 7.

[0031] The support body 7 is moved by the cooperation between the first slider 6 and the arc-shaped sliding groove 101 and the cooperation between the second slider 702 and the sliding groove 601, thereby adapting to different thin-walled bearings 3, that is, the application range of the utility model is wide.

[0032] Example 3

[0033] This embodiment is an improved solution for a thin-walled bearing 3 grinding floating support device based on embodiment 1. Its main structure is the same as that of embodiment 1, and the improvements are as follows: Figure 2As shown, a first spring 503 for supporting the first floating head 4 is provided in the first groove 701. In this embodiment, the positions of the springs in the first grooves 701 of the two supporting units are different. In the first groove 701 below the thin-walled bearing 3, the first spring 503 is located on the right side of the center of the first floating head 4 to prevent the first floating head 4 from rotating due to gravity; in the first groove 701 on the right side of the thin-walled bearing 3, the first spring 503 is located on the left side of the center of the first floating head 4 to prevent the first floating head 4 from rotating due to gravity.

[0034] A second spring 403 is positioned within the second groove 401 to support the second floating head 5. A first receiving hole is defined at the bottom of the second groove 401, and a second receiving hole is defined within the portion of the second floating head 5 located within the second groove 401. One end of the second spring 403 is secured within the first receiving hole, while the other end is secured within the second receiving hole. In this embodiment, within the second groove 401 located below the thin-walled bearing 3, the second spring 403 is positioned to the right of the center of the second floating head 5 to prevent the second floating head 5 from rotating due to gravity. Within the second groove 401 located to the right of the thin-walled bearing 3, the second spring 403 is positioned to the left of the center of the second floating head 5 to prevent the second floating head 5 from rotating due to gravity.

[0035] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floating support device for grinding thin-walled bearings, comprising an electromagnetic clamp (2) for adsorbing the end face of a thin-walled bearing (3), wherein one side of the electromagnetic clamp (2) is provided with two support units spaced apart along its circumference, and the support units are connected to a grinding bed via a base (1), characterized in that: Each of the support units comprises a first floating head (4) rotatably connected to the base (1) via a first pin shaft (402), the axis of the first pin shaft (402) being parallel to the axis of the electromagnetic clamp (2); two second floating heads (5) are provided on one side of the first floating head (4), which are spaced apart along the circumference of the electromagnetic clamp (2) and in contact with the outer wall of the thin-walled bearing (3), each second floating head (5) is rotatably connected to the first floating head (4) via a second pin shaft (502), and the axis of the second pin shaft (502) is parallel to the axis of the electromagnetic clamp (2).

2. A thin-walled bearing grinding floating support device according to claim 1, characterized in that: The base (1) is provided with two support bodies (7) corresponding one to one with the first floating heads (4); the first pin shaft (402) is fixedly connected to the support body (7); and the first floating head (4) is rotatably connected to the first pin shaft (402).

3. A thin-walled bearing grinding floating support device according to claim 2, characterized in that: One end of the support body (7) is provided with a first groove (701) with an opening facing the center of the electromagnetic clamp (2), and the middle part of the first floating head (4) extends into the first groove (701).

4. A thin-walled bearing grinding floating support device according to claim 3, characterized in that: A first spring (503) for supporting the first floating head (4) is provided in the first groove (701).

5. The floating support device for grinding thin-walled bearings according to claim 2, characterized in that: The base (1) is provided with a plurality of arc-shaped sliding grooves (101), the center lines of the arc-shaped sliding grooves (101) coincide with the center line of the electromagnetic clamp (2), and the support body (7) is provided with a first sliding block (6) that slides along the arc-shaped sliding grooves (101) and can be fixed.

6. A thin-walled bearing grinding floating support device according to claim 5, characterized in that: The first sliding block (6) is provided with a plurality of sliding grooves (601), and a second sliding block (702) which slides along the sliding grooves (601) and can be fixed is fixedly connected to the support body (7).

7. The floating support device for grinding thin-walled bearings according to claim 1, characterized in that: The first floating head (4) is provided with two second grooves (401) with openings facing the center of the electromagnetic clamp (2). The second grooves (401) correspond to the second floating heads (5) one by one, and the side of the second floating head (5) facing away from the center of the electromagnetic clamp (2) extends into the second groove (401).

8. The floating support device for grinding thin-walled bearings according to claim 7, characterized in that: A second spring (403) for supporting the second floating head (5) is provided in the second groove (401).

9. A floating support device for grinding thin-walled bearings according to claim 8, characterized in that: A first receiving hole is provided at the bottom of the second groove (401), a second receiving hole is provided at the portion of the second floating head (5) located in the second groove (401), one end of the second spring (403) is fixed in the first receiving hole, and the other end of the second spring (403) is fixed in the second receiving hole.

10. The thin-walled bearing grinding floating support device according to claim 1, characterized in that: The end surface of the second floating head (5) in contact with the outer wall of the thin-walled bearing (3) is covered with a flexible material (501).

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