Superfinishing equipment for self-aligning bearing ring raceway

Abstract

The utility model discloses superfinishing equipment for a self-aligning bearing ring raceway. The superfinishing equipment comprises a mounting frame, the grinding device is movably mounted on the mounting frame and is used for carrying out oscillation grinding on the self-aligning bearing ring raceway; the first driving device is used for driving the grinding device to vertically lift relative to the self-aligning bearing ring; the second driving device is used for driving the grinding device to rotate on the mounting frame; the grinding device comprises a vibration mechanism and a cutter table, a grinding tool is installed at one end of the cutter table, and the vibration mechanism is connected with the cutter table and used for transmitting reciprocating oscillation to the grinding tool. The machining device has the advantage that the machining precision of the self-aligning bearing ring raceway is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment processing, in particular to a superfinishing equipment for a raceway of a self-aligning bearing ring. Background Art

[0002] In the manufacturing process of rolling bearings, super finishing is the last step in the processing of bearing rings and rolling elements. It can remove the micro-unevenness of the grinding surface, improve the surface roughness level, improve the roundness of the rolling surface, reduce the waviness, reduce the vibration and noise of the bearing, and improve the bearing accuracy and life.

[0003] A self-aligning bearing is one with a spherical raceway, capable of accommodating angular deviations between the axis of the inner and outer raceways. Spherical raceways are more complex than linear or flat raceways, making machining them more challenging.

[0004] Currently, the most common raceway superfinishing machines for bearing ring raceways utilize a two-step process involving large reciprocating motion and small oscillations. An oilstone, under the action of a pressure intensifier, generates a certain pressure on the rotating raceway surface. Driven by the oscillator and reciprocating guide rails, the oilstone vibrates and reciprocates, producing a grinding motion. However, this fixed-direction reciprocating superfinishing method is not suitable for the spherical raceways of self-aligning bearings, and the accuracy of the bearing ring raceways cannot be guaranteed after machining. Utility Model Content

[0005] The utility model aims to provide a superfinishing device for the raceway of a self-aligning bearing ring, so as to ensure the machining accuracy of the raceway of the self-aligning bearing ring.

[0006] The utility model is realized through the following technical solutions.

[0007] A superfinishing device for a self-aligning bearing ring raceway, comprising:

[0008] Mounting rack;

[0009] A grinding device, movably mounted on the mounting frame, for oscillatingly grinding the raceway of the self-aligning bearing ring;

[0010] a first driving device, for driving the grinding device to vertically lift and lower relative to the self-aligning bearing ring;

[0011] a second driving device, for driving the grinding device to rotate on the mounting frame;

[0012] The grinding device includes a vibration mechanism and a tool platform. A grinding tool is installed at one end of the tool platform. The vibration mechanism is connected to the tool platform and is used to transmit reciprocating oscillation to the grinding tool.

[0013] As a further improvement of the present invention, the vibration mechanism includes a drive assembly and a vibration assembly, the drive assembly includes a first shell and a driver positioned in the first shell, the vibration assembly includes a second shell and a rotating shaft positioned in the second shell, the first shell is rotatably mounted on the mounting frame, the first shell is fixedly connected to the second shell, the output end of the driver is connected to the rotating shaft so that the rotating shaft can rotate relative to the second shell, a connecting seat is provided between the second shell and the tool table, an oscillation sleeve is rotatably positioned in the connecting seat, and the rotating shaft extends into the connecting seat and is eccentrically connected to the oscillation sleeve.

[0014] As a further improvement of the present invention, a mounting structure is provided at the bottom end of the mounting frame, and the mounting structure includes two mounting plates arranged at intervals, and a mounting groove for accommodating the grinding device is formed between the two mounting plates, and a rotating structure for rotatably connecting the grinding device is provided on both mounting plates.

[0015] As a further improvement of the present invention, the rotating structure includes a positioning seat embedded in the mounting plate and a connecting member rotatably connected to the positioning seat, the connecting member is rotatably inserted into the positioning seat, and one end of the connecting member is fixedly connected to the grinding device.

[0016] As a further improvement of the present invention, the first driving device includes a first motor and a ball screw, the first motor is used to drive the ball screw to rotate, and the ball screw is connected to the mounting bracket through a nut sleeve.

[0017] As a further improvement of the present invention, the first driving device further includes a vertically extending guide seat, and the mounting bracket is slidably connected to the guide seat along the vertical direction.

[0018] As a further improvement of the present invention, the second driving device includes a second motor, a rotating member and a transmission member that transmits transmission connection between the two. The rotating member can be rotatably positioned on the mounting bracket, and the rotating member is transmission-connected to one of the connecting members.

[0019] As a further improvement of the present invention, the transmission member is configured as a transmission belt, a plurality of first transmission teeth are provided on the inner surface of the transmission belt, a plurality of second transmission teeth are provided on the output end of the second motor and the rotating member, and the first transmission teeth are engaged with the second transmission teeth.

[0020] As a further improvement of the present invention, the grinding tool is set as an oilstone. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a detailed description of preferred embodiments of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0022] Figure 1 This is a schematic structural diagram of a superfinishing device for a raceway of a self-aligning bearing ring according to the present invention;

[0023] Figure 2 This is a positional relationship diagram between a superfinishing device for a raceway of a self-aligning bearing ring and a self-aligning bearing ring of the present invention;

[0024] Figure 3 This is a structural schematic diagram from one perspective of a superfinishing device for a self-aligning bearing ring raceway according to the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the structure of part A;

[0026] Figure 5 FIG is a structural schematic diagram of a grinding device;

[0027] Figure 6 This is a side structural diagram of a superfinishing device for a self-aligning bearing raceway according to the present invention. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below based on the accompanying drawings and implementation examples.

[0029] In this specification, directional terms such as up, down, left, right, front, back, front, back, top, and bottom, which are mentioned or may be mentioned, are defined relative to the configurations shown in the accompanying drawings. The terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these or other directional terms should not be construed as restrictive.

[0030] This embodiment provides a superfinishing device for the raceway of a self-aligning bearing ring, which is used to perform superfinishing on the raceway of a self-aligning bearing ring. Figures 1 to 6 , including a mounting frame 1, a grinding device 2 for grinding the raceway of the self-aligning bearing ring a, a first drive device 3 and a second drive device 4, wherein the grinding device 2 is rotatably mounted on the mounting frame 1, the grinding device 2 includes a vibration mechanism 21 and a tool table 22, a grinding tool 23 is installed on one end of the tool table 22 facing the raceway of the self-aligning bearing ring a, the vibration mechanism 21 is connected to the tool table 22 and is used to transmit reciprocating oscillation to the grinding tool 23, the first drive device 3 is used to drive the grinding device 2 to vertically lift and lower relative to the self-aligning bearing ring a, and the second drive device 4 is used to drive the grinding device 2 to rotate on the mounting frame 1.

[0031] During super finishing, the movement path of the grinding tool 23 can be changed by changing the position of the grinding tool 23 in the vertical direction, so that the movement trajectory of the grinding tool 23 can be consistent with the shape of the raceway of the self-aligning bearing ring a, thereby achieving super finishing of the self-aligning ring raceway and ensuring the processing accuracy.

[0032] In addition, it should be noted that, referring to Figure 2 During processing, the self-aligning bearing ring a is placed under the grinding device 2. Figure 2 What is shown in the figure is the inner ring of the self-aligning bearing. The grinding tool 23 is driven by the first driving device 3 to move vertically up and down so that the grinding tool 23 can contact the raceway of the self-aligning bearing ring a.

[0033] In this embodiment, the vibration mechanism 21 includes a driving component and a vibration component, the driving component includes a first shell 211 and a driver 212 positioned in the first shell 211, and the vibration component includes a second shell 213 and a rotating shaft 214 positioned in the second shell 213, wherein the first shell 211 is rotatably mounted on the mounting frame 1, the first shell 211 is connected and fixedly connected to the second shell 213, and the second shell 213 is connected to the tool table 22, and the driver 212 here uses a rotating motor, and the output end of the rotating motor is connected to the rotating shaft 214 through a transmission structure such as gears so that the rotating shaft 214 can rotate circumferentially relative to the second shell 213, and a connecting seat 215 is further provided between the second shell 213 and the tool table 22, and the connecting seat 215 is integrally arranged with the tool table 22, and an oscillation sleeve 216 is rotatably positioned inside the connecting seat 215, and one end of the rotating shaft 214 extends into the connecting seat 215 and is eccentrically connected to the oscillation sleeve 216. At the same time, in order to facilitate replacement and maintenance, the rotating shaft 214 and the oscillation sleeve 216 are detachably connected by fasteners such as keys and pins.

[0034] In this embodiment, the grinding tool 23 can be an oil stone.

[0035] Based on the above technical solution, during operation, the first drive device 3 first drives the mounting frame 1 to be vertically lifted and lowered, so that the grinding tool 23 on the tool table 22 contacts and abuts the raceway of the self-aligning bearing ring a to grind the raceway of the self-aligning bearing ring a. At this time, the rotating motor drives the rotating shaft 214 to rotate, and then the rotating shaft 214 transmits power to the oscillating sleeve 216, driving the oscillating sleeve 216 to rotate eccentrically relative to the connecting seat 215 to generate a reciprocating oscillating impact force. The generated oscillating impact force is transmitted to the tool table 22 through the connecting seat 215, so that the grinding tool 23 on the tool table 22 can also reciprocate relative to the roller. Through the above technical solution, the rotating shaft 214 is used to cooperate with the oscillating sleeve 216 to rotate eccentrically to generate reciprocating oscillation. Not only is the structure simple and reliable, but it can also stably transmit the oscillating force to the tool table 22. In addition, by changing the speed of the rotating motor and the size of the oscillating sleeve 216, the oscillation frequency and oscillation amplitude of the rigid grinding tool 23 can be flexibly adjusted to adapt to specific processing requirements and obtain the best processing effect.

[0036] In this embodiment, referring to Figure 3 、 Figure 4 The bottom end of the mounting frame 1 is provided with a mounting structure, which includes two mounting plates 11 arranged relatively spaced apart. The top of the mounting plate 11 is fixedly connected to the mounting frame 1. A mounting groove for partially accommodating the grinding device 2 is formed between the two mounting plates 11, and both mounting plates 11 are provided with a rotating structure 12 for rotatably connecting the grinding device 2. Specifically, the rotating structure 12 includes a positioning seat 121 embedded in the mounting plate 11 and a connecting member 122 rotatably connected to the positioning seat 121. The connecting member 122 is rotatably inserted into the positioning seat 121. One end of the connecting member 122 is fixedly connected to the grinding device 2. At least one of the two connecting members 122 is transmission-connected to the second drive device 4. The second drive device 4 only needs to drive the connecting member 122 to rotate to drive the grinding device 2 connected to the connecting member 122 to rotate. The positioning seat 121 here can be a bearing, and correspondingly, the connecting member 122 can be an axial connection structure that can rotate in the bearing.

[0037] In this embodiment, the first drive device 3 includes a first motor 31 and a ball screw (not shown). The ball screw extends vertically, and the motor is used to drive the ball screw to rotate. The ball screw is connected to the mounting frame 1 via a nut. During operation, the first motor 31 drives the ball screw to rotate about its own axis, thereby driving the mounting frame 1 connected to the ball screw to move vertically and linearly. The first drive device 3 also includes a vertically extending guide seat 32, on which one side of the mounting frame 1 is vertically slidably connected.

[0038] In this embodiment, the second driving device 4 includes a second motor 41, a rotating member 42 and a transmission member 43. The transmission member 43 is respectively connected to the output end of the second motor 41 and the rotating member 42. The rotating member 42 can be rotatably positioned on the mounting frame 1, and the rotating member 42 is transmission-connected to one of the connecting members 122. When working, the second motor 41 drives the rotating member 42 to rotate, thereby driving the grinding device 2 to rotate.

[0039] Furthermore, the transmission member 43 is configured as a transmission belt, and a plurality of first transmission teeth are provided on the inner surface of the transmission belt, and a plurality of second transmission teeth are provided on the output end of the second motor 41 and the rotating member 42, and the first transmission teeth are engaged with the second transmission teeth. The setting of the first transmission teeth and the second transmission teeth, on the one hand, enables the output end of the second motor 41 and the rotating member 42 to rotate synchronously, and on the other hand, increases the friction between the transmission belt and the second motor 41 and the rotating member 42, which helps to improve the stability of the transmission belt during operation.

[0040] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A superfinishing equipment for the raceway of a self-aligning bearing ring, characterized in that: include Mounting frame (1); A grinding device (2) movably mounted on the mounting frame (1) for oscillatingly grinding the raceway of the self-aligning bearing ring (a); A first driving device (3) is used to drive the grinding device (2) to vertically lift relative to the self-aligning bearing ring (a); a second driving device (4) for driving the grinding device (2) to rotate on the mounting frame (1); The grinding device (2) comprises a vibration mechanism (21) and a tool platform (22), a grinding tool (23) is mounted on one end of the tool platform (22), and the vibration mechanism (21) is connected to the tool platform (22) and is used to transmit reciprocating oscillation to the grinding tool (23).

2. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 1, characterized in that: The vibration mechanism (21) includes a driving component and a vibration component, wherein the driving component includes a first shell (211) and a driver (212) positioned in the first shell (211), and the vibration component includes a second shell (213) and a rotating shaft (214) positioned in the second shell (213), wherein the first shell (211) is rotatably mounted on the mounting frame (1), and the first shell (211) is fixedly connected to the second shell (213), and the output end of the driver (212) is connected to the rotating shaft (214) so ​​that the rotating shaft (214) can rotate relative to the second shell (213), and a connecting seat (215) is provided between the second shell (213) and the tool table (22), wherein an oscillation sleeve (216) is rotatably positioned in the connecting seat (215), and the rotating shaft (214) extends into the connecting seat (215) and is eccentrically connected to the oscillation sleeve (216).

3. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 1, characterized in that: A mounting structure is provided at the bottom end of the mounting frame (1), the mounting structure comprising two mounting plates (11) spaced apart, a mounting groove for accommodating the grinding device (2) being formed between the two mounting plates (11), and a rotating structure (12) rotatably connected to the grinding device (2) being provided on both mounting plates (11).

4. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 3, characterized in that: The rotating structure (12) comprises a positioning seat (121) embedded in the mounting plate (11) and a connecting member (122) rotatably connected to the positioning seat, the connecting member (122) rotatably passing through the positioning seat (121), and one end of the connecting member (122) is fixedly connected to the grinding device (2).

5. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 1, characterized in that: The first driving device (3) comprises a first motor (31) and a ball screw, wherein the first motor (31) is used to drive the ball screw to rotate, and the ball screw is connected to the mounting frame (1) via a nut sleeve.

6. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 5, characterized in that: The first driving device (3) further comprises a vertically extending guide seat (32), and the mounting frame (1) is slidably connected to the guide seat (32) along a vertical direction.

7. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 4, characterized in that: The second driving device (4) includes a second motor (41), a rotating member (42), and a transmission member (43) that transmits transmission connection between the two. The rotating member (42) can be rotatably positioned on the mounting frame (1), and the rotating member (42) is transmittance-connected to one of the connecting members (122).

8. The superfinishing equipment for the raceway of a self-aligning bearing ring according to claim 7, characterized in that: The transmission member (43) is configured as a transmission belt, and a plurality of first transmission teeth are provided on the inner surface of the transmission belt. A plurality of second transmission teeth are provided on the output end of the second motor (41) and the rotating member (42), and the first transmission teeth are engaged with the second transmission teeth.

9. The superfinishing equipment for the raceway of a self-aligning bearing ring according to any one of claims 1 to 8, characterized in that: The grinding tool (23) is set as an oil stone.

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