Bearing raceway forming device

Abstract

The utility model discloses a bearing raceway forming device which is composed of a machine tool body comprising a main shaft, a driving motor and the like, and a supporting platform fixedly connected to the machine tool body. A clamp which is used for clamping a bearing workpiece and can be driven by a first driving part to rotate is arranged at the front end of the main shaft above the supporting platform; the forming device further comprises a forming assembly, the forming assembly comprises an extrusion wheel capable of freely rotating, the extrusion wheel can be driven by the second driving part to get close to or get away from the clamp, and the extrusion wheel can abut against the bearing workpiece when getting close to the clamp so as to conduct extrusion forming and strengthening on a roller path on the bearing workpiece. The forming device has the beneficial effects that the forming assembly can be matched with a clamp to carry out extrusion forming and strengthening on a roller path on a bearing workpiece, and finally the anti-fatigue life of a bearing is prolonged.

Description

Technical Field

[0001] This application relates to the field of bearing processing technology, and in particular to a bearing raceway forming device. Background Technology

[0002] The bearing raceway is crucial to the reliability of bearing operation. Its quality depends on the material properties, the manufacturing process, and the machining precision. Typically, bearing raceways are shaped by CNC lathe machining before grinding. This method offers advantages such as high machining efficiency and convenient precision control, but disadvantages include low material utilization, the generation of metal shavings and dust on the machined surface, and the inability to strengthen the raceway surface through further machining, which is detrimental to improving the bearing's fatigue resistance. Summary of the Invention

[0003] The purpose of this application is to propose a bearing raceway forming device to solve the defects in the prior art, such as low bearing fatigue life caused by porosity and inclusion interference in ordinary bearing materials.

[0004] A bearing raceway forming apparatus, characterized in that it includes a machine tool bed, a spindle mounted on the machine tool bed, and a support platform fixedly connected to the machine tool bed;

[0005] The front end of the main shaft located above the support platform is equipped with a clamp for clamping bearing workpieces, which can be driven to rotate by the first driving component.

[0006] It also includes: a forming assembly located on a support platform, the forming assembly including an extrusion roller that is driven to rotate by a first driving member or is capable of rotating freely, the extrusion roller being able to approach or move away from the fixture under the drive of a second driving member, the extrusion roller being able to abut against the bearing workpiece when approaching the fixture, so as to extrude and reinforce the raceway on the bearing workpiece.

[0007] Its beneficial effects are: the forming components can cooperate with the fixture to extrude and strengthen the raceways on the bearing workpiece, saving raw materials and extending the fatigue life of the bearing.

[0008] In some embodiments, the molding assembly includes a guide rail disposed on a support platform, a slider disposed on the guide rail, a second drive member for driving the slider to move on the guide rail, and an extrusion wheel disposed on the slider.

[0009] Its beneficial effects are: on the one hand, the second driving component can be used to drive the slider to move on the guide rail; on the other hand, the second driving component can also adjust the feed amount of the extrusion wheel acting on the bearing.

[0010] In some embodiments, the slider is an adjustment platform capable of adjusting the position of the extrusion wheel in a first horizontal direction and a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction.

[0011] In some implementations, there are two extrusion rollers located on both sides of the clamp.

[0012] Its beneficial effects are: on the one hand, having two extrusion rollers can improve the efficiency of bearing raceway forming; on the other hand, it can also make the bearing raceway subjected to uniform force during forming.

[0013] In some embodiments, the bearing workpiece is a bearing inner ring with an inner ring raceway. A clamp applies pressure from the inner wall outward to clamp the bearing inner ring. An extrusion wheel can move along a second horizontal direction under the drive of a second drive member, and can abut against the inner ring raceway of the bearing inner ring to roll and strengthen the raceway.

[0014] In some embodiments, the bearing raceway forming apparatus further includes a cooling and lubrication assembly for spraying cooling and / or lubricating fluid onto the bearing workpiece on the fixture.

[0015] Its beneficial effects are: when the bearing workpiece on the fixture is subjected to the raceway forming process, the friction between the parts will generate heat and may produce a small amount of dust. Using the cooling component to spray cooling and / or lubricating fluid onto the bearing workpiece can, on the one hand, reduce the temperature and lubricate, and on the other hand, reduce the impact of dust on the processing environment.

[0016] In some implementations, the extrusion wheel can be driven to rotate by a third drive element. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front view of an embodiment of this application.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the clamp and extrusion wheel used in machining the inner ring of a bearing.

[0020] Figure 3 for Figure 1 A schematic diagram of the working surface structure when machining a typical bearing inner ring using a medium extrusion roller.

[0021] Explanation of the reference numerals in the attached diagram:

[0022] 1. Bed; 2. Support platform; 4. Fixture; 5. Guide rail; 6. Forming assembly; 7. Cooling and lubrication assembly; 61. Slider; 63. Extrusion roller; 64. Second drive component. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," "upper-level," "lower-level," "main," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] like Figures 1-3 As shown,

[0027] A bearing raceway forming apparatus includes a machine tool bed 1 and a support platform 2 fixedly connected to the machine tool bed 1;

[0028] The front end of the main shaft above the support platform 2 is provided with a clamp 4 that can be driven to rotate by the first driving component for clamping bearing workpieces. The first driving component includes a motor, a belt connected to the motor drive end, and a main shaft that rotates synchronously with the belt.

[0029] It also includes a forming assembly 6 located on the support platform 2. The forming assembly 6 includes an extrusion roller 63 that is driven to rotate by a first driving member or is capable of free rotation. The extrusion roller 63 can move in a second horizontal direction under the drive of a second driving member 64 to approach or move away from the clamp 4. When the extrusion roller 63 approaches the clamp 4, it can abut against the bearing workpiece to extrude and strengthen the raceway on the bearing workpiece. The second driving member 64 is preferably a hydraulic cylinder, but motor drive is also an option.

[0030] The forming component 6 can cooperate with the fixture 4 to extrude and strengthen the raceway on the bearing workpiece, thereby extending the fatigue life of the bearing.

[0031] Preferably, the molding component 6 includes a guide rail 5 disposed on the support platform 2, a slider 61 disposed on the guide rail 5, a second driving member 64 for driving the slider 61 to move on the guide rail 5, and the extrusion wheel 63 disposed on the slider 61.

[0032] On the one hand, the second driving component 64 can be used to drive the slider 61 to move on the guide rail 5. On the other hand, the second driving component 64 can also adjust the feed amount of the extrusion wheel 63 acting on the bearing.

[0033] Preferably, the slider 61 is an adjustment platform capable of adjusting the position of the extrusion roller 63 in a first horizontal direction and a second horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction, meaning that the position of the extrusion roller 63 on the horizontal plane can be adjusted (the first horizontal direction is perpendicular to the first horizontal direction). Figure 1 The orientation of the paper, the second horizontal direction is parallel to Figure 1 (The orientation of the paper).

[0034] The slider 61 includes a lower slider that can move along a second horizontal direction, a groove provided on the lower slider, the groove being oriented along a first horizontal direction, and an upper slider that can slide along the first horizontal direction provided on the groove.

[0035] The clamp 4 extends directly into the middle of the bearing inner ring to fix the bearing inner ring, and the extrusion wheel 63 abuts against the inner ring raceway from the outside to extrude and strengthen the inner ring raceway.

[0036] Preferably, there are two extrusion rollers 63, located on both sides of the fixture 4. The extrusion rollers 63 on both sides can speed up the processing and improve production efficiency.

[0037] like Figure 3 As shown, the working surface shape of the extrusion wheel 63 can be adapted to the shape of the bearing, including but not limited to ball bearings, cylindrical roller bearings, tapered roller bearings, spherical roller bearings, and needle roller bearings.

[0038] It should be noted that for bearing raceway forming, fixture 4 can be set as follows during machining:

[0039] In the first case, the fixture 4 is driven to rotate actively by the first driving member, and the extrusion wheel 63 rotates due to friction after contacting the bearing workpiece on the fixture 4.

[0040] In the second scenario, the extrusion wheel 63 rotates under the drive of the third driving component, and the clamp 4 rotates accordingly after contacting the extrusion wheel 63.

[0041] In the third scenario, the clamp 4 rotates actively under the drive of the first driving member, while the extrusion wheel 63 rotates under the drive of the third driving member.

[0042] like Figures 1-2 As shown,

[0043] Preferably, it also includes a cooling assembly and a lubricant 7 for spraying coolant onto the bearing workpiece on the fixture 4, wherein the cooling assembly includes a spray pipe and a liquid supply drive device connected to the spray pipe, the liquid supply drive device supplying coolant to the spray pipe and spraying it out through the spray pipe.

[0044] When the bearing workpiece on fixture 4 is undergoing the raceway forming process, the friction between the parts will generate heat and may produce a small amount of dust. The cooling component 7 is used to spray cooling and / or lubricating fluid onto the bearing workpiece, which can reduce the temperature and reduce the impact of dust on the processing environment.

[0045] When this bearing raceway forming device is in operation, the bearing workpiece is first fixed onto the fixture 4. Driven by the first drive unit, the fixture 4 rotates. The extrusion rollers 63, located in the forming components 6 on both sides of the fixture 4, approach the bearing workpiece on the fixture 4 under the drive of the second drive unit 64, until the extrusion rollers 63 contact the bearing workpiece. The feed rate of the extrusion rollers 63 on the bearing workpiece can be adjusted by the second drive unit 64. The third drive unit drives the extrusion rollers 63 to rotate, thereby forming the bearing raceway. After processing is completed, the extrusion rollers 63, located in the forming components 6 on both sides of the fixture 4, move away from the bearing workpiece on the fixture 4 under the drive of the second drive unit 64. The fixture automatically unloads the workpiece, completing the processing of the bearing workpiece (generally the inner ring of the bearing).

[0046] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of the appended claims. In this case, all details can be replaced with equivalent elements, and the materials, shapes, and sizes can also be arbitrary.

Claims

1. A bearing raceway forming apparatus, characterized in that, Includes a machine tool bed (1) and a support platform (2) fixedly connected to the machine tool bed (1); The front end of the main shaft above the support platform (2) is provided with a clamp (4) that can be driven to rotate by the first driving component to clamp the bearing workpiece; It also includes: a forming assembly (6) located on the support platform (2), the forming assembly (6) including an extrusion wheel (63) that is driven to rotate by a first driving member or can rotate freely, the extrusion wheel (63) being able to approach or move away from the clamp (4) under the drive of a second driving member (64), the extrusion wheel (63) being able to abut against the bearing workpiece when approaching the clamp (4) to extrude and reinforce the raceway on the bearing workpiece; The bearing workpiece is a bearing inner ring, which has an inner ring raceway. The clamp (4) can apply pressure from the bearing inner ring outward to clamp the bearing inner ring, and the extrusion wheel (63) can move along the second horizontal direction under the drive of the second drive member (64) to abut against the inner ring raceway of the bearing inner ring in order to extrude and strengthen the inner ring raceway.

2. The bearing raceway forming apparatus according to claim 1, characterized in that, The molding component (6) includes a guide rail (5) disposed on the support platform (2), a slider (61) disposed on the guide rail (5), a second driving member (64) for driving the slider (61) to move on the guide rail (5), and an extrusion wheel (63) disposed on the slider (61).

3. The bearing raceway forming apparatus according to claim 2, characterized in that, The slider (61) is an adjustment platform that can adjust the position of the extrusion wheel (63) in the first horizontal direction and the second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction.

4. The bearing raceway forming apparatus according to claim 3, characterized in that, There are two extrusion wheels (63), located on both sides of the clamp (4).

5. The bearing raceway forming apparatus according to claim 1, characterized in that, It also includes a cooling and lubrication assembly (7) for spraying cooling and lubricating fluid onto the bearing workpiece on the fixture.

6. The bearing raceway forming apparatus according to claim 1, characterized in that, The extrusion wheel (63) can be driven to rotate by a third driving member.

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