Bearing inner ring grinding device

Abstract

The utility model discloses a bearing inner race grinding device, including support seat, the top of support seat is fixed with guide rail, and the both sides in guide rail inside are slid and established first support leg and second support leg respectively, and the top of first support leg and second support leg all are fixed with top cover through bolt, and the surface of first support leg and second support leg is commonly placed and has adjusting unit, adjusting unit includes the support rod of fixed in the surface of first support leg and second support leg and the screw rod of movable assembly in the one side wall of support rod through axle base. The utility model provides a bearing inner race grinding device, through adopting the setting of multiple grinding rollers, and distributing its in the circumference direction, like this can form the support of multiple point positions to the inboard of bearing ring, like this can realize the grinding of the same axis when rotating grinding, and the smoothness of inner wall and the coaxiality between inner wall and outer wall will not be reduced after grinding, guarantee the machining precision of rolling bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a bearing inner ring grinding device. Background Technology

[0002] Bearings are key components in mechanical equipment used to support rotating bodies and reduce friction between moving parts. Their main function is to reduce the coefficient of friction during movement and ensure rotational accuracy. They can be classified according to the direction of load bearing into radial bearings (mainly bearing radial loads) and thrust bearings (mainly bearing axial loads); and according to the type of rolling elements into ball bearings (rolling elements are steel balls) and roller bearings (rolling elements are cylindrical rollers or tapered rollers). A typical structure includes balls, an inner ring, an outer ring, and a cage. The material is usually high-chromium steel (hardness approximately 61-65 Rockwell hardness), and the cage material can be metallic or non-metallic. They are widely used in machine tools, automobiles, motors, and other equipment requiring rotational support, and are characterized by low starting friction and smooth operation. However, their performance may degrade under impact loads or high-temperature environments.

[0003] Currently, in the processing of bearings, the inner ring of the bearing is involved in the grinding process. Conventional grinding devices mostly use a single grinding roller for rotary grinding. When using this single roller for unidirectional grinding, it has been found that the grinding of the inner ring of the bearing is uneven after grinding, which affects the overall concentricity. Therefore, a bearing inner ring grinding device is proposed. Utility Model Content

[0004] Therefore, it is necessary to provide a bearing inner ring grinding device to address the above-mentioned technical problems. This device has multiple grinding rollers arranged in a circumferential distribution, which can form support on the inner side of the bearing ring and achieve concentricity during grinding. This avoids the problem of uneven grinding that can easily occur when grinding is performed in a single area.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A bearing inner ring grinding device includes a support base, a guide rail fixed to the top of the support base, a first support leg and a second support leg slidably arranged on both sides inside the guide rail, a top cover fixed to the top of the first support leg and the second support leg by bolts, and an adjustment unit placed on the surface of the first support leg and the second support leg.

[0007] The adjustment unit includes a support rod fixed to the surface of the first support leg and the second support leg, and a lead screw movably mounted on one side wall of the support rod via a bearing seat. The two sides of the lead screw surface have a first thread and a second thread, respectively, and the thread directions of the first thread and the second thread are opposite.

[0008] The first and second threads are respectively threaded with a first slider and a second slider. The first and second sliders both pass through the outside of the support rod to form a connecting part. The surfaces of the two opposing connecting parts are hinged together with a movable arm. One end of the two movable arms is hinged together with a connecting seat. A grinding part is mounted on the connecting seat.

[0009] Furthermore, the grinding component includes support plates fixed to both sides of the connecting seat surface, and a U-shaped seat is fixedly connected between the two support plates by bolts, and a grinding roller is movably assembled in the U-shaped seat.

[0010] Furthermore, a positioning bolt is threaded through the surface of the support rod at one end near the lead screw.

[0011] Furthermore, a drive unit is provided at the end of the support rod away from the positioning bolt.

[0012] Furthermore, the drive unit includes a first pulley and a second pulley, the surfaces of the first pulley and the second pulley are jointly fitted with a transmission belt, the first pulley is fixed together with one end of the support rod, and a servo motor is fixed to the surface of the second pulley.

[0013] Furthermore, a support plate is fixed to the bottom wall of the servo motor and fixed to the support base.

[0014] Furthermore, the connecting part has six parts, which are divided into two groups, with three parts in each group. The connecting parts in the two groups are distributed on the corresponding first slider and second slider.

[0015] Furthermore, a central bearing ring is commonly fitted onto the surface of the plurality of grinding rollers, and clamping hydraulic rods are respectively provided on both sides of the bearing ring, the clamping hydraulic rods being fixed to an external support base surface.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The bearing inner ring grinding device provided by this utility model uses multiple grinding rollers arranged in a circumferential direction to form multi-point support on the inner side of the bearing ring. This allows for coaxial dynamic grinding during rotary grinding, and the grinding process does not reduce the smoothness of the inner wall or the coaxiality between the inner and outer walls, thus ensuring the machining accuracy of the rolling bearing. Attached Figure Description

[0018] Figure 1 A schematic diagram of the bearing inner ring grinding device provided by this utility model;

[0019] Figure 2A three-dimensional structural schematic diagram of the bearing inner ring grinding device provided by this utility model;

[0020] Figure 3 A top view of the bearing inner ring grinding device provided by this utility model;

[0021] Figure 4 A schematic diagram of the bearing ring structure of the bearing inner ring grinding device provided by this utility model;

[0022] Figure 5 A schematic diagram of the adjustment unit structure of the bearing inner ring grinding device provided by this utility model;

[0023] Figure 6 A cross-sectional view of the adjustment unit of the bearing inner ring grinding device provided by this utility model.

[0024] The markings in the diagram are explained as follows:

[0025] 1. Support base;

[0026] 2. Guide rail; 21. First support leg; 22. Second support leg; 23. Top cover;

[0027] 3. Adjustment unit; 31. Support rod; 32. Lead screw; 33. First lead screw section; 34. Second lead screw section; 35. First slider;

[0028] 310. Locating bolts;

[0029] 36. Second slider; 37. Movable arm; 38. Connecting seat; 39. Connecting part;

[0030] 4. Grinding parts; 41. Support plate; 42. U-shaped seat; 43. Grinding roller;

[0031] 5. Drive unit; 51. First pulley; 52. Second pulley; 53. Transmission belt; 54. Servo motor; 55. Support plate;

[0032] 6. Bearing ring; 61. Clamping hydraulic rod. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0034] Please refer to Figures 1-6As shown, a bearing inner ring grinding device includes: a support base 1, a guide rail 2 fixed to the top of the support base 1, a first support leg 21 and a second support leg 22 slidably disposed on both sides inside the guide rail 2, and positioning screws threaded through the surfaces of the first support leg 21 and the second support leg 22. Rotating the positioning screws can cause one end of them to abut against the surface of the guide rail 2 to fix the first support leg 21 and the second support leg 22. In this way, after the bearing ring 6 is processed, the bearing ring 6 can be removed after the first support leg 21 is removed. The top of the first support leg 21 and the second support leg 22 are fixed with a top cover 23 by bolts. Removing the bolts on the top cover 23 can release the positioning state of the support rod 31. An adjustment unit 3 is placed on the surface of the first support leg 21 and the second support leg 22.

[0035] The adjustment unit 3 includes a support rod 31 fixed to the surface of the first support leg 21 and the second support leg 22, and a lead screw 32 movably mounted on one side wall of the support rod 31 via a bearing seat. The two sides of the surface of the lead screw 32 have a first thread portion 33 and a second thread portion 34, respectively, and the thread directions of the first thread portion 33 and the second thread portion 34 are opposite.

[0036] The first wire portion 33 and the second wire portion 34 are respectively threaded with a first slider 35 and a second slider 36. The first slider 35 and the second slider 36 both pass through the outside of the support rod 31 to form a connecting portion 39. The surfaces of the two opposing connecting portions 39 are hinged together with a movable arm 37. One end of the two movable arms 37 is hinged together with a connecting seat 38. A grinding part 4 is mounted on the connecting seat 38.

[0037] The grinding component 4 includes support plates 41 fixed on both sides of the surface of the connecting seat 38. A U-shaped seat 42 is fixedly connected between the two support plates 41 by bolts. A grinding roller 43 is movably assembled in the U-shaped seat 42.

[0038] A positioning bolt 310 is threaded through one end of the support rod 31 near the lead screw 32. Rotating the positioning bolt 310 causes one end to abut against the surface of the lead screw 32, thereby fixing the position of the lead screw 32 and preventing it from sliding on its own.

[0039] The support rod 31 is provided with a drive unit 5 at the end away from the positioning bolt 310;

[0040] The drive unit 5 includes a first pulley 51 and a second pulley 52. ​​The surfaces of the first pulley 51 and the second pulley 52 are jointly fitted with a transmission belt 53. The first pulley 51 is fixed together with one end of the support rod 31. The surface of the second pulley 52 is fixed with a servo motor 54.

[0041] The bottom wall of the servo motor 54 is fixed with a support plate 55 and fixed to the support base 1;

[0042] The connecting part 39 has six parts, which are divided into two groups, each group having three parts, and the connecting parts 39 in the two groups are distributed on the corresponding first slider 35 and second slider 36.

[0043] A central bearing ring 6 is fitted on the surface of multiple grinding rollers 43. Clamping hydraulic rods 61 are respectively provided on both sides of the bearing ring 6. The clamping hydraulic rods 61 are fixed to the external support base. The clamping hydraulic rods 61 are fixed to the external support base. In this way, starting the clamping hydraulic rods 61 can make its output end slide in the horizontal direction, thus forming a clamping or releasing of the bearing ring 6.

[0044] In practical applications, rotating the lead screw 32 allows it to form a threaded assembly with the first slider 35 or the second slider 36. Driven by the thread, the first slider 35 and the second slider 36 can slide relative to each other, i.e., move away from or closer to each other. During the sliding of the first slider 35 and the second slider 36, the movable arm 37 can be adjusted in angle, thereby adjusting the height of the connecting seat 38. This allows for adjustment of the position of the grinding workpiece 4. When multiple grinding workpieces 4 are simultaneously unfolded and retracted, the grinding range can be adjusted according to the bearing rings 6 of different sizes.

[0045] When the rotating lead screw 32 causes the grinding roller 43 on the grinding workpiece 4 to abut against the inner ring of the bearing ring 6, the servo motor 54 can be started to drive the second pulley 52 to rotate. The second pulley 52 will drive the first pulley 51 to rotate through the transmission belt 53, causing it to drive the support rod 31 to rotate synchronously. In this way, when the multiple grinding workpieces 4 on it rotate, the inner side of the bearing ring 6 can be ground synchronously at multiple positions. This way, the smoothness of the inner wall and the coaxiality between the inner and outer walls will not be reduced after grinding, thus ensuring the machining accuracy of the rolling bearing.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A bearing inner ring grinding device, characterized by, Includes a support base (1), the top of which is fixed with a guide rail (2), and a first support leg (21) and a second support leg (22) are slidably provided on both sides inside the guide rail (2). The tops of the first support leg (21) and the second support leg (22) are both fixed with a top cover (23) by bolts. An adjustment unit (3) is placed on the surface of the first support leg (21) and the second support leg (22). The adjustment unit (3) includes a support rod (31) fixed to the surface of the first support leg (21) and the second support leg (22) and a lead screw (32) movably mounted on one side wall of the support rod (31) via a shaft seat. The two sides of the surface of the lead screw (32) have a first thread (33) and a second thread (34) respectively, and the thread directions of the first thread (33) and the second thread (34) are opposite. The first threaded part (33) and the second threaded part (34) are respectively threaded with a first slider (35) and a second slider (36). The first slider (35) and the second slider (36) both pass through the outside of the support rod (31) to form a connecting part (39). The surfaces of the two opposing connecting parts (39) are hinged together with a movable arm (37). One end of the two movable arms (37) is hinged together with a connecting seat (38). A grinding part (4) is mounted on the connecting seat (38).

2. The bearing inner race grinding apparatus of claim 1, wherein, The grinding component (4) includes support plates (41) fixed on both sides of the surface of the connecting seat (38), and a U-shaped seat (42) is fixedly connected between the two support plates (41) by bolts. A grinding roller (43) is movably assembled in the U-shaped seat (42).

3. The bearing inner race grinding apparatus of claim 1, wherein, A positioning bolt (310) is threaded through one end of the support rod (31) near the lead screw (32).

4. The bearing inner ring grinding device according to claim 3, characterized in that, The support rod (31) has a drive unit (5) at one end away from the positioning bolt (310).

5. The bearing inner ring grinding apparatus according to claim 4, characterized in that, The drive unit (5) includes a first pulley (51) and a second pulley (52). The surfaces of the first pulley (51) and the second pulley (52) are jointly fitted with a transmission belt (53). The first pulley (51) is fixed together with one end of the support rod (31). A servo motor (54) is fixed on the surface of the second pulley (52).

6. The bearing inner ring grinding apparatus according to claim 5, characterized in that, The bottom wall of the servo motor (54) is fixed with a support plate (55) and fixed to the support base (1).

7. The bearing inner ring grinding apparatus according to claim 1, characterized in that, The connecting part (39) has six parts, which are divided into two groups, each group having three parts. The connecting parts (39) in the two groups are distributed on the corresponding first slider (35) and second slider (36).

8. The bearing inner ring grinding apparatus according to claim 2, characterized in that, A bearing ring (6) is fitted on the surface of multiple grinding rollers (43). A clamping hydraulic rod (61) is provided on both sides of the bearing ring (6). The clamping hydraulic rod (61) is fixed to the external support base.

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