High-precision numerical control of the raceway grinder for the outer ring of a self-aligning roller bearing

Abstract

This utility model discloses a high-precision CNC self-aligning roller bearing outer ring raceway grinding machine, belonging to the field of roller bearing processing technology. The utility model includes a grinding machine with a worktable. A stencil is mounted above the worktable, and a rotating base is positioned above the stencil. A fixture is mounted on top of the rotating base. The fixture includes a fixed sleeve and wedges. The fixed sleeve is slidably connected to the bottom of the wedges. The wedges are distributed along the circumference of the fixed sleeve, and a guide rail is provided on the fixed sleeve. A dovetail groove at the bottom of each wedge engages with the guide rail. A groove is formed on the inner ring wall of the fixed sleeve, and a spring is fixedly installed on one side of each wedge within the groove. An adjustment assembly is arranged around the outer ring wall of the fixed sleeve. This utility model, through the structural design of the fixture, the slidable connection between the fixed sleeve and the wedges, and the engagement of the dovetail groove at the bottom of the wedges with the guide rail, adapts to roller bearing outer rings of different sizes. The spring on one side of the wedge provides clamping force, ensuring the bearing remains stable during processing.

Description

Technical Field

[0001] This utility model relates to the field of roller bearing processing technology, specifically a high-precision CNC self-aligning roller bearing outer ring raceway grinding machine. Background Technology

[0002] With the continuous development of industrial technology, the demand for high-precision bearings in high-end equipment manufacturing, precision machine tools, aerospace and other fields is increasing. The machining accuracy of the bearing outer ring raceway directly affects the bearing's rotational performance, load-bearing capacity and service life. Therefore, higher requirements are placed on the accuracy, stability and adaptability of raceway grinding equipment.

[0003] Currently, CNC grinding machines are widely used in the bearing processing field. Among them, the grinding of bearing outer ring raceways usually adopts precision fixture positioning and CNC system to control grinding parameters. Traditional fixtures mostly use mechanical or hydraulic clamping methods, which can meet basic processing requirements, but there are still some problems in high-precision processing. Since the bearing outer ring needs to maintain extremely high coaxiality and roundness during the grinding process, the rigid clamping of traditional fixtures may cause slight positioning deviations due to workpiece size tolerances or clamping errors, affecting the final processing accuracy. Therefore, a high-precision CNC self-aligning roller bearing outer ring raceway grinding machine is proposed to address the above situation. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision CNC self-aligning roller bearing outer ring raceway grinding machine.

[0005] This utility model is achieved through the following technical solution: This utility model relates to a high-precision CNC self-aligning roller bearing outer ring raceway grinding machine, comprising a grinding machine, a grinding table, a stencil mounted above the grinding table, a rotating base above the stencil, and a fixture on the top of the rotating base; the fixture comprises a fixed sleeve and wedges, the fixed sleeve being slidably connected to the bottom of the wedges, the wedges being distributed along the circumference of the fixed sleeve, a guide rail being provided on the fixed sleeve, and a dovetail groove at the bottom of each wedge engaging with the guide rail; a groove being formed on the inner ring wall of the fixed sleeve, a spring being provided on one side of the wedge, the spring being fixedly installed in the groove, and an adjustment assembly being provided around the outer ring wall of the fixed sleeve.

[0006] Furthermore, the adjustment component includes a support block, a telescopic column is provided above the support block, an arc-shaped plate is provided on the front side of the telescopic column, and the telescopic column is located in a through hole opened in the fixed sleeve.

[0007] Furthermore, a moving mechanism is provided on the right side of the work platform, and a grinding wheel is provided on the left side of the moving mechanism.

[0008] Furthermore, both sides of the inner wall of the work platform are equipped with fixing plates, and a row of slots are opened on the fixing plates.

[0009] Furthermore, the perforated plate includes a plate body, and the bottom two sides of the plate body are provided with locking posts, which cooperate with the locking slots.

[0010] Furthermore, the other side of the wedge is an inclined surface.

[0011] This utility model has the following beneficial effects: This utility model adapts to roller bearing outer rings of different sizes through the structural design of the clamp, the sliding connection between the fixed sleeve and the wedge, and the cooperation between the dovetail groove at the bottom of the wedge and the guide rail. The spring set on one side of the wedge can provide a stable clamping force to ensure that the bearing remains stable during processing, thereby improving processing accuracy and stability and reducing processing errors.

[0012] This utility model, through the structural design of the adjustable component, is set around the outer ring wall of the fixed sleeve and cooperates with the wedge block to form an adjustable clamping structure, which reduces the risk of workpiece displacement during processing, improves processing accuracy, and shortens changeover time. When linked with the CNC system, it can realize automatic feeding and parameter compensation, reducing the need for manual intervention and operational errors.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a schematic diagram of the grinding machine. Figure 3 This is a schematic diagram of the rotating base and clamp. Figure 4 This is a cross-sectional schematic diagram of the fixture and adjustment components.

[0015] In the diagram: 1. Grinding machine; 101. Worktable; 102. Moving mechanism; 103. Grinding wheel; 104. Fixing plate; 105. Slot; 2. Rotating base; 3. Fixture; 301. Fixing sleeve; 302. Wedge; 303. Groove; 304. Spring; 305. Guide rail; 306. Through hole; 4. Adjustment assembly; 401. Support block; 402. Telescopic column; 403. Arc plate; 5. Slot plate; 501. Plate body; 502. Slot. Detailed Implementation

[0016] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: a high-precision CNC self-aligning roller bearing outer ring raceway grinding machine, including a grinding machine 1, the grinding machine 1 including a working table 101, a squeegee 5 installed above the working table 101, a rotating base 2 set above the squeegee 5, and a clamp 3 set on the top of the rotating base 2; the clamp 3 includes a fixed sleeve 301 and a wedge 302, the other side of the wedge 302 is an inclined surface, the fixed sleeve 301 is slidably connected to the bottom of the wedge 302, the wedges 302 are distributed along the circumference of the fixed sleeve 301, a guide rail 305 is set on the fixed sleeve 301, and a dovetail groove opened at the bottom of each wedge 302 cooperates with the guide rail 305; a groove 303 is opened on the inner ring wall of the fixed sleeve 301, a spring 304 is set on one side of the wedge 302, the spring 304 is fixedly installed in the groove 303, and an adjustment component 4 is set around the outer ring wall of the fixed sleeve 301.

[0018] Furthermore, the adjustment component 4 includes a support block 401, a telescopic column 402 is provided above the support block 401, an arc-shaped plate 403 is provided on the front side of the telescopic column 402, and the telescopic column 402 is located in the through hole opened in the fixed sleeve 301.

[0019] In this embodiment, the outer ring of the bearing is placed inside the arc surface of the inner wall of the fixing sleeve 301. At this time, the wedge 302 is slightly in contact with the outer ring of the bearing under the preload of the spring 304. By adjusting the telescopic column 402 of the assembly 4, the arc plate 403 is fixed to the outer ring of the bearing inside the fixing sleeve 301. The wedge 302 is pressed radially towards the outer ring of the bearing through the guide rail 305. When the wedge surface of the wedge 302 is subjected to the reaction force of the outer ring of the bearing, friction is generated, which firmly fixes the outer ring of the bearing inside the fixing sleeve 301. When it is necessary to disassemble the bearing, the telescopic adjustment assembly 4 is extended in the opposite direction, and the wedge 302 is reset under the elastic force of the spring, so that the outer ring of the bearing can be removed.

[0020] A moving mechanism 102 is provided on the right side of the working slot 101, and a grinding wheel 103 is provided on the left side of the moving mechanism 102. Fixed plates 104 are provided on both sides of the inner wall of the working slot 101. A row of slots 105 are provided on the fixed plates 104. The sprue 5 includes a plate body 501. The bottom sides of the plate body 501 are provided with locking posts 502, which cooperate with the slots 105.

[0021] In this embodiment, the working platform 101 serves as the basic processing platform. The moving mechanism 102 on its right side can move flexibly along a preset trajectory, driving the grinding wheel 103 on the left side to precisely approach the outer ring of the bearing to be processed. The moving speed and feed rate are controlled by the CNC system to achieve high-precision grinding of the raceway surface. The slots 105 on the fixing plates 104 on both sides of the inner wall of the working platform 101 and the bottom locking pins 502 of the slot plate 5 form a detachable connection structure. The slot plate 5 can be quickly installed by embedding the locking pins 502 into the slots 105. It can support the rotating base 2 and the workpiece above, and automatically remove grinding debris through the holes of the plate body 501 to avoid debris accumulation. This ensures the processing stability of the grinding wheel 103. The quick disassembly and assembly function of the slot plate 5 and the working platform 101 enables immediate cleaning and maintenance of the processing environment.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-precision CNC self-aligning roller bearing outer ring raceway grinding machine, comprising a grinding machine (1), characterized in that: The The grinding machine (1) includes a work table (101), a squeegee (5) is installed above the work table (101), a rotating base (2) is provided above the squeegee (5), and a clamp (3) is provided on the top of the rotating base (2). The clamp (3) includes a fixed sleeve (301) and a wedge (302). The fixed sleeve (301) is slidably connected to the bottom of the wedge (302). The wedges (302) are distributed along the circumference of the fixed sleeve (301). A guide rail (305) is provided on the fixed sleeve (301). A dovetail groove is opened at the bottom of each wedge (302) to cooperate with the guide rail (305). A groove (303) is provided on the inner ring wall of the fixed sleeve (301), and a spring (304) is provided on one side of the wedge (302). The spring (304) is fixedly installed in the groove (303), and an adjustment component (4) is provided around the outer ring wall of the fixed sleeve (301).

2. The high-precision CNC self-aligning roller bearing outer ring raceway grinding machine according to claim 1, characterized in that, The adjustment component (4) includes a support block (401), a telescopic column (402) is provided above the support block (401), an arc plate (403) is provided on the front side of the telescopic column (402), and the telescopic column (402) is provided in the through hole opened in the fixed sleeve (301).

3. The high-precision CNC self-aligning roller bearing outer ring raceway grinding machine according to claim 1, characterized in that, A moving mechanism (102) is provided on the right side of the working platform (101), and a grinding wheel (103) is provided on the left side of the moving mechanism (102).

4. The high-precision CNC self-aligning roller bearing outer ring raceway grinding machine according to claim 1, characterized in that, The inner wall of the work platform (101) is provided with a fixing plate (104) on both sides, and a row of slots (105) is provided on the fixing plate (104).

5. The high-precision CNC self-aligning roller bearing outer ring raceway grinding machine according to claim 4, characterized in that, The sluice plate (5) includes a plate body (501), and the bottom sides of the plate body (501) are provided with locking posts (502), which cooperate with the locking slots (105).

6. The high-precision CNC self-aligning roller bearing outer ring raceway grinding machine according to claim 1, characterized in that, The other side of the wedge (302) is an inclined surface.

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