A bearing grinding tool

Abstract

The utility model discloses a tool for bearing grinding, including base, the base is rotated and is connected with the pivot through bearing, and the base is equipped with the motor of drive pivot rotation, and the pivot's axle body evenly distributes at least three groups of floating support piece, the floating support piece includes guide rod, and the guide rod sliding sleeve joint has the clamping seat, and the clamping seat has the arc convex platform of cooperation with the bearing inner ring of waiting for processing, and the arc convex platform one end is equipped with the positioning step of bearing inner ring end face resistance and touch. The utility model discloses through motor drive pivot rotation, and the clamping seat is away from pivot under the action of centrifugal force when pivot rotates, and the clamping seat is resisted and touched with bearing inner ring, and it is positioned to it, and then through setting spring no.

Description

Technical Field

[0001] This utility model relates to the field of bearing processing technology, specifically to a tooling for bearing grinding. Background Technology

[0002] In the precision grinding process of bearings, the clamping and positioning accuracy of the workpiece directly affects the geometric accuracy and surface quality of the final product, especially key indicators such as the roundness of the raceway, dimensional consistency, and end face parallelism. Traditional bearing inner ring grinding fixtures mostly use chucks or collets for rigid clamping, securing the workpiece to the spindle through mechanical force or hydraulic / pneumatic devices. Although this type of clamping method is simple in structure and convenient to operate, it has many drawbacks in practical applications.

[0003] First, rigid clamping can easily generate significant clamping stress on the workpiece surface, causing elastic or plastic deformation of the inner ring of thin-walled bearings. This deformation is particularly noticeable in small and medium-sized bearings or thin-walled workpieces, and is difficult to detect while clamped, but springs back after the clamp is released, resulting in dimensional and shape deviations after grinding, severely affecting raceway roundness and machining accuracy. Second, uneven clamping force distribution or clamping point position deviations can easily cause workpiece eccentricity, leading to uneven grinding allowance, which in turn affects machining efficiency and surface roughness. Furthermore, traditional clamps typically lack precise positioning capabilities for the bearing's axial end face, making it difficult to ensure consistency between the grinding position and the design datum, reducing product consistency and assembly interchangeability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a tooling for bearing grinding. It solves the problem that traditional tooling often uses rigid clamping, which causes workpiece deformation due to clamping stress. It improves the roundness of the raceway and has a significant effect. It can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tooling for bearing grinding, comprising a base, wherein the base is rotatably connected to a rotating shaft via a bearing, the base is provided with a motor for driving the rotating shaft to rotate, and at least three sets of floating support members are evenly distributed on the shaft body; the floating support member includes a guide rod, the guide rod is slidably sleeved with a retainer, the retainer has an arc-shaped boss that mates with the inner ring of the bearing to be processed, and one end of the arc-shaped boss is provided with a positioning step that abuts against the end face of the inner ring of the bearing to be processed.

[0006] Preferably, the guide rod is threaded with a nut, and the guide rod is sleeved with a spring one and a spring two. The two ends of the spring one are in contact with the card seat and the nut, respectively, and the two ends of the spring two are in contact with the card seat and the rotating shaft, respectively.

[0007] Preferably, the card holder is provided with a positioning element that abuts against the end face of the inner ring of the bearing to be processed. The positioning element includes a pull rod and a spring three. The pull rod has a positioning plate on its body. The card holder has a through hole and a through groove. The through groove passes through the arc-shaped boss and communicates with the through hole. The spring three is located in the through hole and is fixedly connected to its end. The other end of the spring three is fixedly connected to the pull rod. The pull rod is adapted to the through hole, the positioning plate is adapted to the through groove, and the positioning plate protrudes from the arc-shaped boss.

[0008] Preferably, the card holder is provided with a circular hole that matches the guide rod.

[0009] Preferably, the positioning plate is inserted into the pull rod, and the pull rod body is provided with a slot that is interference-fitted with the positioning plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the motor drives the rotating shaft to rotate, and when the rotating shaft rotates, the clamping seat moves away from the rotating shaft under the action of centrifugal force. The clamping seat abuts against the inner ring of the bearing and positions it. Then, by setting spring one and spring two for buffer support, flexible clamping and positioning of the inner ring of the bearing is achieved. This solves the problem that traditional tooling often uses rigid clamping, which causes workpiece deformation due to clamping stress. It also improves the roundness of the raceway and has a significant effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the floating support structure of this utility model; Figure 3 This is an enlarged schematic diagram of a partial structure of the present invention.

[0012] In the diagram: 1 Motor, 2 Base, 3 Rotating Shaft, 4 Floating Support, 4.1 Card Seat, 4.2 Arc-shaped Boss, 4.3 Positioning Step, 4.4 Guide Rod, 4.5 Nut, 4.6 Spring 1, 4.7 Spring 2, 4.8 Through Hole, 4.9 Through Slot, 5 Positioning Component, 5.1 Positioning Plate, 5.2 Tie Rod, 5.3 Spring 3. Detailed Implementation

[0013] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0014] Please see Figure 1-3 The present invention provides the following technical solution: Example 1: A tooling for bearing grinding includes a base 2, a rotating shaft 3 rotatably connected to the base 2 via a bearing, a motor 1 for driving the rotating shaft 3 to rotate, and at least three sets of floating support members 4 evenly distributed on the shaft body of the rotating shaft 3; the floating support member 4 includes a guide rod 4.4, a retainer 4.1 slidably sleeved on the guide rod 4.4, the retainer 4.1 having a round hole adapted to the guide rod 4.4, and the retainer 4.1 having an arc-shaped boss 4.2 that mates with the inner ring of the bearing to be processed, and a positioning step 4.3 at one end of the arc-shaped boss 4.2 that abuts against the end face of the inner ring of the bearing to be processed; It is understandable that motor 1 drives shaft 3 to rotate. When shaft 3 rotates, under the action of centrifugal force, clamp 4.1 slides along guide rod 4.4. Clamp 4.1 abuts against the inner ring of the bearing. The three clamps 4.1 position the inner ring of the bearing, realizing the clamping operation of the inner ring of the bearing. By using the rotational centrifugal force to clamp and position the inner ring of the bearing, the problem of workpiece deformation caused by clamping stress caused by the rigid clamping of traditional tooling is solved, and the roundness of the raceway is improved.

[0015] Example 2: Unlike Example 1, the guide rod 4.4 is threaded with a nut 4.5, and the guide rod 4.4 is fitted with a spring 4.6 and a spring 4.7. The two ends of the spring 4.6 contact the retainer 4.1 and the nut 4.5 respectively, and the two ends of the spring 4.7 contact the retainer 4.1 and the rotating shaft 3 respectively. The retainer 4.1 is elastically supported by the springs 4.6 and 4.7. The function of the spring 4.6 is to avoid excessive pressure on the inner ring of the bearing when the centrifugal force is too large. The function of the spring 4.7 is to keep the retainer 4.1 in a certain position so that the inner ring of the bearing can be initially positioned when clamped.

[0016] Example 3: Unlike Example 1, the holder 4.1 is provided with a positioning element 5 that abuts against the end face of the inner ring of the bearing to be processed. The positioning element 5 includes a pull rod 5.2 and a spring 5.3. The pull rod 5.2 has a positioning plate 5.1 on its body. The holder 4.1 has a through hole 4.8 and a through groove 4.9. The through groove 4.9 passes through the arc-shaped boss 4.2 and communicates with the through hole 4.8. The spring 5.3 is located in the through hole 4.8 and is fixedly connected to its end. The other end of the spring 5.3 is fixedly connected to the pull rod 5.2. The pull rod 5.2 is adapted to the through hole 4.8, and the positioning plate 5.1 is adapted to the through groove 4.9. The positioning plate 5.1 protrudes from the arc-shaped boss 4.2. Under the force of the spring 5.3, the positioning plate 5.1 always abuts against the end face of the inner ring of the bearing. In addition, the positioning step 4.3 positions the other end face of the inner ring of the bearing, ensuring the positional accuracy of the inner ring grinding and improving the grinding quality.

[0017] It should be noted that the positioning plate 5.1 and the pull rod 5.2 are inserted into each other. The rod body of the pull rod 5.2 has a slot that is interference fit with the positioning plate 5.1. When clamping the inner ring of the bearing, the positioning plate 5.1 can be removed to prevent the inner ring of the bearing from not being able to fit. After clamping, it is inserted again. The interference fit is used to prevent the positioning plate 5.1 from coming off.

[0018] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents in the content of this utility model.

Claims

1. A tooling for bearing grinding, comprising a base (2), characterized in that: The base (2) is rotatably connected to a rotating shaft (3) via a bearing. The base (2) is equipped with a motor (1) that drives the rotating shaft (3) to rotate. At least three sets of floating support members (4) are evenly distributed on the shaft body of the rotating shaft (3). The floating support member (4) includes a guide rod (4.4). The guide rod (4.4) is slidably sleeved with a retainer (4.1). The retainer (4.1) has an arc-shaped boss (4.2) that mates with the inner ring of the bearing to be processed. One end of the arc-shaped boss (4.2) is provided with a positioning step (4.3) that abuts against the end face of the inner ring of the bearing to be processed.

2. The tooling for bearing grinding according to claim 1, characterized in that: The guide rod (4.4) is threaded with a nut (4.5). The guide rod (4.4) is fitted with a spring one (4.6) and a spring two (4.7). The two ends of the spring one (4.6) are in contact with the card seat (4.1) and the nut (4.5) respectively. The two ends of the spring two (4.7) are in contact with the card seat (4.1) and the rotating shaft (3) respectively.

3. The tooling for bearing grinding according to claim 1, characterized in that: The card holder (4.1) is provided with a positioning element (5) that abuts against the end face of the inner ring of the bearing to be processed. The positioning element (5) includes a pull rod (5.2) and a spring three (5.3). The pull rod (5.2) has a positioning plate (5.1) on its body. The card holder (4.1) has a through hole (4.8) and a through groove (4.9). The through groove (4.9) passes through the arc-shaped boss (4.2) and communicates with the through hole (4.8). The spring three (5.3) is located in the through hole (4.8) and is fixedly connected to its end. The other end of the spring three (5.3) is fixedly connected to the pull rod (5.2). The pull rod (5.2) is adapted to the through hole (4.8). The positioning plate (5.1) is adapted to the through groove (4.9), and the positioning plate (5.1) protrudes from the arc-shaped boss (4.2).

4. The tooling for bearing grinding according to claim 1, characterized in that: The card holder (4.1) is provided with a round hole that is adapted to the guide rod (4.4).

5. The tooling for bearing grinding according to claim 3, characterized in that: The positioning plate (5.1) is inserted into the pull rod (5.2), and the body of the pull rod (5.2) is provided with a slot that is interference fit with the positioning plate (5.1).

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