End face grinding device for bearing manufacturing

Abstract

The utility model provides an end face polishing device for bearing manufacturing, and relates to the technical field of bearing manufacturing, the end face polishing device comprises a rotating seat, at least three groups of clamping rods, a driving assembly and a polishing mechanism, the rotating seat is rotatably arranged, each clamping rod is radially and movably arranged on the rotating seat, each clamping rod is axially limited on the rotating seat, and the driving assembly is arranged on the rotating seat. The clamping rods are arranged in an equal-angle circumferential array mode with a rotating shaft of the rotating base as the center, the driving assembly is used for driving the rotating base to rotate and driving the clamping rods to synchronously and linearly move in the radial direction of the rotating base so as to enlarge and reduce the diameter of a circle defined by the clamping rods, and the grinding mechanism is used for grinding the inner side and the outer side of an inner ring or an outer ring of a rolling bearing. And when the rotating seat rotates, the clamping rod rotates along with the rotating seat. According to the utility model, the problem of non-uniform grinding amount caused by inconsistent coaxiality during secondary clamping of the inner and outer side end surfaces of the inner ring or the outer ring can be solved.

Description

Technical Field

[0001] This utility model relates to the field of bearing manufacturing technology, and in particular to an end face grinding device for bearing manufacturing. Background Technology

[0002] Rolling bearings mainly consist of four parts: an inner ring, an outer ring, rolling elements, and a cage. Rolling bearings support the weight of rotating parts by the rolling elements (such as steel balls or cylindrical rollers) rolling on the raceways of the inner and outer rings, thus reducing friction and wear. Among these processes, grinding the inner and outer end faces of the inner and outer rings is a crucial step in rolling bearing manufacturing to ensure dimensional accuracy, surface roughness, and geometry.

[0003] When machining the inner and outer end faces of the inner and outer rings of rolling bearings, it is currently necessary to use fixtures with different clamping distances to perform secondary clamping on the inner or outer end faces of the inner or outer rings. However, secondary clamping can easily cause inconsistencies in the coaxiality of the two clamping operations, which in turn has a significant impact on the uniformity of the grinding amount. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an end face grinding device for bearing manufacturing, which aims to solve the technical problem of uneven grinding amount caused by inconsistent coaxiality of the inner and outer end faces of the inner or outer ring during secondary clamping.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bearing end face grinding device includes a rotating base, at least three sets of clamping rods, a drive assembly, and a grinding mechanism. The rotating base is rotatably mounted, and each clamping rod is radially movable on the rotating base, and each clamping rod is axially limited on the rotating base. The clamping rods are arranged in a circular array at equal angles around the rotation axis of the rotating base. The drive assembly is used to drive the rotating base to rotate and to drive the clamping rods to move synchronously in a straight line along the radial direction of the rotating base, so as to expand and shrink the diameter of the circle formed by the clamping rods. The grinding mechanism is used to grind the inner or outer sides of the inner or outer ring of the rolling bearing; wherein, when the rotating base rotates, the clamping rods rotate with the rotating base.

[0006] In addition, the bearing manufacturing end face grinding device described above according to this utility model may also have the following additional technical features:

[0007] Furthermore, the rotating base is provided with a straight groove along its radial direction. The driving assembly includes a shaft seat, a rotating arm, a telescopic driver, and a rotary driver. The shaft seat is rotatably mounted on the rotating base and is coaxially arranged with the rotating base. Multiple sets of rotating arms are provided, which are the same number as the clamping rods. Each rotating arm is mounted on the shaft seat and arranged in a circular array at equal angles around the rotation axis of the shaft seat. The rotating arm is provided with an arc-shaped groove along the radial direction of the rotating base. One end of the clamping rod is axially limited in both the arc-shaped groove and the straight groove. The telescopic driver is rotatably mounted between the rotating base and one set of rotating arms to drive the rotating arm to rotate relative to the rotating base. The driving end of the rotary driver is connected to the rotating base.

[0008] Furthermore, the bearing manufacturing end face grinding device also includes a support base, and the rotating base is rotatably mounted on the support base.

[0009] Furthermore, the fixed end of the rotary driver is located on the support base.

[0010] Furthermore, the rotary table is provided with a limiting part, and the grinding mechanism includes a slide, a grinding rod, and a drive rod. The grinding rod is arranged along the axial direction of the rotary table and is slidably disposed on the slide. The drive rod is arranged along the axial direction of the rotary table, one end of the drive rod cooperates with the limiting part, and the other end of the drive rod is connected to the grinding rod. When the rotary table rotates, the limiting part drives the drive rod to reciprocate along the axial direction of the rotary table.

[0011] Furthermore, the circumferential edge of the rotary seat is provided with a wave groove with a circular path, and one end of the drive rod is slidably disposed in the wave groove.

[0012] Furthermore, the grinding rod is provided with opposing limiting blocks, and the distance between the two limiting blocks matches the sum of the axial distance of the wave groove and the width of the inner or outer ring of the rolling bearing.

[0013] Furthermore, the bearing manufacturing end face grinding device also includes a water spray pipe.

[0014] Furthermore, the water spray pipe is mounted on the grinding rod.

[0015] The beneficial effects of this invention include at least the following: By controlling the clamping rods to move synchronously and linearly along the radial direction of the rotary table via a drive assembly, the clamping circle diameter can be adaptively adjusted, allowing one device to accommodate rolling bearings of various sizes. Furthermore, when clamping the inner or outer end faces of the inner or outer ring of the rolling bearing, the coaxiality of the secondary clamping is ensured, preventing any impact on the uniformity of the grinding amount. In addition, the multiple sets of clamping rods are arranged in a uniform circumferential array around the rotary table's rotation axis, and their synchronous linear radial movement via the drive assembly ensures that the clamping force is uniformly applied to the circumference of the inner or outer ring of the rolling bearing, avoiding localized deformation or stress concentration. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of the bearing manufacturing end face grinding device according to an embodiment of the present invention.

[0017] Figure 2 This is a second-view structural schematic diagram of the bearing manufacturing end-face grinding device in one embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the rotating base in one embodiment of the present utility model;

[0019] Explanation of key component symbols:

[0020] Rotary seat 100, straight slide 110, wave groove 120, clamping rod 200, shaft seat 310, rotating arm 320, arc slide 321, telescopic actuator 330, rotary actuator 340, grinding mechanism 400, slide 410, grinding rod 420, limit block 421, drive rod 430, support seat 500, water spray pipe 600;

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please refer to Figures 1 to 3 This invention provides a bearing manufacturing end-face grinding device, comprising a rotary base 100, at least three sets of clamping rods 200, a drive assembly, and a grinding mechanism 400. Specifically, the rotary base 100 can rotate around its central axis. Each clamping rod 200 is radially movably mounted on the rotary base 100, and each clamping rod 200 is axially confined on the rotary base 100, so that the clamping rods 200 rotate with the rotary base 100. Each clamping rod 200 is arranged in a circumferential array at equal angles around the rotation axis of the rotary base 100, thus forming a circle around which all the clamping rods 200 revolve, with the central axis of this circle coaxial with the rotation axis of the rotary base 100. When the drive assembly is in operation, it drives the rotary base 100 to rotate around its rotation axis. Simultaneously, the drive assembly drives all the clamping rods 200 to move synchronously in a straight line along the radial direction of the rotary seat 100. This ensures that the center of the circle formed by all the clamping rods 200 around the rotation axis of the rotary seat 100 is located on the rotation axis of the rotary seat 100. When the clamping rods 200 move outward along the radial direction of the rotary seat 100, the diameter of the circle formed by all the clamping rods 200 around the rotation axis of the rotary seat 100 expands; when the clamping rods 200 move inward along the radial direction of the rotary seat 100, the diameter of the circle formed by all the clamping rods 200 around the rotation axis of the rotary seat 100 shrinks. The grinding mechanism 400 is used to grind the inner and outer end faces of the inner or outer ring of the rolling bearing.

[0026] In this embodiment, for example, the clamping rod 200 is provided in three sets. Specifically, when grinding the inner end face of the inner or outer ring of a rolling bearing is required, the drive assembly first drives three sets of clamping rods 200 to move synchronously in a linear fashion along the radial direction of the rotary seat 100. When the diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is slightly larger than the outer diameter of the inner or outer ring of the rolling bearing, the outer end face of the inner or outer ring of the rolling bearing is clamped in the three sets of clamping rods 200. Then, the diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is reduced, thereby radially clamping the outer end face of the inner or outer ring of the rolling bearing. When the drive assembly drives the rotary seat 100 to rotate, the clamping rods 200 rotate with the rotary seat 100, and the three sets of clamping rods 200 drive the inner or outer ring of the rolling bearing to rotate. At this time, the grinding mechanism 400 grinds the inner end face of the inner or outer ring of the rolling bearing. When it is necessary to grind the outer end face of the inner or outer ring of the rolling bearing, the drive assembly first drives the three sets of clamping rods 200 to move synchronously in a straight line along the radial direction of the rotary seat 100. When the diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is slightly smaller than the inner diameter of the inner or outer ring of the rolling bearing, the inner end face of the inner or outer ring of the rolling bearing is hooked onto the three sets of clamping rods 200. Then the diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is enlarged, so that the three sets of clamping rods 200 push the inner end face of the inner or outer ring of the rolling bearing radially outward. When the drive assembly drives the rotary seat 100 to rotate, the clamping rods 200 rotate with the rotary seat 100, and then the three sets of clamping rods 200 drive the inner or outer ring of the rolling bearing to rotate. At this time, the grinding mechanism 400 grinds the outer end face of the inner or outer ring of the rolling bearing.

[0027] In some alternative embodiments, such as Figure 1 , Figure 3As shown, the rotary base 100 has a straight groove 110 along its radial direction. The drive assembly includes a shaft seat 310, a rotating arm 320, a telescopic driver 330, and a rotary driver 340. Specifically, the shaft seat 310 is rotatably mounted on the rotary base 100 and is coaxially mounted with the rotary base 100. Multiple sets of rotating arms 320 are provided, which are the same number as the clamping rods 200. Each rotating arm 320 is mounted on the outer circumferential surface of the shaft seat 310 and is arranged in a circular array at equal angles around the rotation axis of the shaft seat 310. The rotating arm 320 has an arc-shaped groove 321 along the radial direction of the rotary base 100. The left end of the clamping rod 200 is axially limited in both the arc-shaped groove 321 and the straight groove 110. The telescopic driver 330 is rotatably mounted between the rotary base 100 and one set of rotating arms 320 to drive the rotating arm 320 to rotate relative to the rotary base 100. The drive end of the rotary driver 340 is connected to the rotary base 100. Optionally, the telescopic actuator 330 may employ telescopic devices such as telescopic cylinders, telescopic motors, and telescopic hydraulic cylinders, while the rotary actuator 340 may employ rotary devices such as rotary cylinders, rotary motors, and rotary hydraulic cylinders.

[0028] In this embodiment, exemplarily, the telescopic actuator 330 uses a telescopic motor, the rotary actuator 340 uses a rotary motor, and the clamping rods 200 are provided in three sets. Specifically, when it is necessary to grind the inner end face of the inner or outer ring of the rolling bearing, one set of clamping rods 200 is first driven to rotate relative to the rotary seat 100 by the telescopic motor, thereby driving the shaft seat 310 to rotate. The rotating shaft seat 310 causes the other clamping rods 200 to rotate synchronously. Thus, under the limiting action of the arc-shaped slide groove 321, the clamping rods 200 slide within the straight slide groove 110. When the diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is slightly larger than the outer diameter of the inner or outer ring of the rolling bearing, the... The outer end face of the inner or outer ring of the rolling bearing is clamped in three sets of clamping rods 200. The diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is then reduced, thereby radially clamping the outer end face of the inner or outer ring of the rolling bearing. When the rotary motor drives the rotary seat 100 to rotate, the clamping rods 200 rotate with the rotary seat 100, which in turn causes the inner or outer ring of the rolling bearing to rotate. At this point, the grinding mechanism 400 grinds the inner end face of the inner or outer ring of the rolling bearing. When grinding is required on the outer end face of the inner or outer ring of a rolling bearing, firstly, a telescopic motor drives one set of clamping rods 200 to rotate relative to the rotary seat 100, thereby causing the bearing seat 310 to rotate. The rotating bearing seat 310 causes the other clamping rods 200 to rotate synchronously. Thus, under the limiting action of the arc-shaped slide groove 321, the clamping rods 200 slide within the straight slide groove 110. When the diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is slightly smaller than the inner diameter of the inner or outer ring of the rolling bearing, the rolling shaft... The inner end face of the inner or outer ring of the bearing is attached to three sets of clamping rods 200. The diameter of the circle formed by the three sets of clamping rods 200 around the rotation axis of the rotary seat 100 is then enlarged, so that the three sets of clamping rods 200 radially push the inner end face of the inner or outer ring of the rolling bearing outward. When the rotary motor drives the rotary seat 100 to rotate, the clamping rods 200 rotate with the rotary seat 100, and then the three sets of clamping rods 200 drive the inner or outer ring of the rolling bearing to rotate. At this time, the outer end face of the inner or outer ring of the rolling bearing is polished by the polishing mechanism 400.

[0029] In some alternative embodiments, such as Figure 1 , Figure 2 As shown, the bearing manufacturing end face grinding device also includes a support base 500, and the swivel base 100 is rotatably mounted on the support base 500.

[0030] In some alternative embodiments, such as Figure 1 As shown, the fixed end of the rotary driver 340 is located on the support base 500.

[0031] In some alternative embodiments, such asFigure 1 , Figure 2 As shown, the rotary base 100 is provided with a limiting part, and the grinding mechanism 400 includes a slide 410, a grinding rod 420, and a drive rod 430. Specifically, the grinding rod 420 is arranged along the axial direction of the rotary base 100, such that the center of the circle formed by the multiple sets of clamping rods 200 is located on the axial center line of the grinding rod 420. The grinding rod 420 is also slidably mounted on the slide 410. The drive rod 430 is arranged along the axial direction of the rotary base 100. The left end of the drive rod 430 cooperates with the limiting part, and the right end of the drive rod 430 is connected to the grinding rod 420.

[0032] In this embodiment, when the rotary driver 340 drives the rotary seat 100 to rotate, the limiting part drives the drive rod 430 to reciprocate along the axial direction of the rotary seat 100. In this way, the drive rod 430 drives the grinding rod 420 to move back and forth on the slide 410, so that the grinding rod 420 moves back and forth along the axial direction of the rolling bearing, thereby dynamically grinding the inner or outer end face of the inner or outer ring of the rolling bearing to ensure the uniformity of the grinding amount.

[0033] In some alternative embodiments, such as Figure 1 , Figure 3 As shown, the circumferential edge of the rotary base 100 is provided with a wave groove 120 with a circular path. The left end of the drive rod 430 is slidably disposed in the wave groove 120. When the rotary driver 340 drives the rotary base 100 to rotate, the rotating wave groove 120 drives the left end of the drive rod 430 to move in the extension path of the wave groove 120, thereby causing the drive rod 430 to reciprocate left and right in the axial direction.

[0034] In some alternative embodiments, to prevent the inner or outer ring of the rolling bearing from misaligning during grinding, such as... Figure 1 As shown, the grinding rod 420 is provided with opposing limiting blocks 421. The distance between the two limiting blocks 421 matches the sum of the axial distance of the wave groove 120 and the width of the inner or outer ring of the rolling bearing. Specifically, assuming the distance between the two limiting blocks 421 is S1, the axial distance of the wave groove 120 is the distance between the axial crest and the axial trough S2, and the width of the inner or outer ring of the rolling bearing is S3, then S1 cannot be less than the sum of S2 and S3.

[0035] In some alternative embodiments, such as Figure 1 , Figure 2 As shown, the bearing manufacturing end face grinding device also includes a water spray pipe 600. By setting the water spray pipe 600, the temperature rise in the grinding area can be suppressed, reducing thermal damage. At the same time, the frictional resistance between the grinding rod 420 and the rolling bearing can be reduced, and residual grinding debris can be washed away.

[0036] In some alternative embodiments, such as Figure 1 , Figure 2As shown, the water spray pipe 600 is mounted on the grinding rod 420.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the appended claims.

Claims

1. A bearing manufacturing end face grinding device, characterized in that, The bearing manufacturing end face grinding device includes: Rotary base, which can be rotatably set; At least three sets of clamping rods, each of which is radially movable on the rotating base and axially limited on the rotating base, and each of which is arranged in a circumferential array at equal angles with the rotation axis of the rotating base as the center; A drive assembly for driving the rotary table to rotate and driving the clamping rods to move synchronously in a linear fashion along the radial direction of the rotary table, so as to expand and shrink the diameter of the circle formed by the clamping rods. A grinding mechanism is used to grind the inner or outer sides of the inner or outer ring of a rolling bearing. When the rotating base rotates, the clamping rod rotates along with the rotating base.

2. The bearing manufacturing end face grinding device according to claim 1, characterized in that, The rotating base is provided with a straight slide groove along its radial direction, and the driving assembly includes: A bearing seat is rotatably mounted on the rotary seat and is coaxially arranged with the rotary seat; The rotating arm is provided in multiple sets, which are the same number as the clamping rod. Each rotating arm is set on the bearing seat and arranged in a circular array at equal angles with the rotation axis of the bearing seat as the center. The rotating arm is provided with an arc-shaped groove along the radial direction of the rotating seat. One end of the clamping rod is axially limited in both the arc-shaped groove and the straight groove. A telescopic actuator is rotatably disposed between the rotating base and one of the sets of rotating arms to drive the rotating arms to rotate relative to the rotating base; A rotary driver, the drive end of which is connected to the rotary base.

3. The bearing manufacturing end face grinding device according to claim 2, characterized in that, The bearing manufacturing end face grinding device also includes a support base, and the rotating base is rotatably mounted on the support base.

4. The bearing manufacturing end face grinding device according to claim 3, characterized in that, The fixed end of the rotary driver is located on the support base.

5. The bearing manufacturing end face grinding device according to claim 1, characterized in that, The rotary table is provided with a limiting part, and the grinding mechanism includes: Slide; A grinding rod is arranged along the axial direction of the rotary base, and the grinding rod is slidably mounted on the slide base; A drive rod is arranged along the axial direction of the rotary base. One end of the drive rod is engaged with the limiting part, and the other end of the drive rod is connected to the grinding rod. When the rotating base rotates, the limiting part drives the driving rod to reciprocate along the axial direction of the rotating base.

6. The bearing manufacturing end face grinding device according to claim 5, characterized in that, The circumferential edge of the rotating base is provided with a wave groove with a circular path, and one end of the drive rod is slidably disposed in the wave groove.

7. The bearing manufacturing end face grinding apparatus according to claim 6, characterized in that, The grinding rod is provided with opposing limiting blocks, and the distance between the two limiting blocks matches the sum of the axial distance of the wave groove and the width of the inner or outer ring of the rolling bearing.

8. The bearing manufacturing end face grinding apparatus according to claim 5, characterized in that, The bearing manufacturing end face grinding device also includes a water spray pipe.

9. The bearing manufacturing end face grinding apparatus according to claim 8, characterized in that, The water spray pipe is located on the grinding rod.

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