Anti-deformation bearing thin-wall part machining supporting and fixing structure

Abstract

The utility model discloses an anti-deformation bearing thin-wall part machining supporting and fixing structure which comprises a base and a supporting assembly, a machining table is connected to the top of the base, clamping blocks are arranged on the two sides of the top of the machining table, and the supporting assembly is arranged in the machining table and comprises a bevel gear ring and a plurality of bevel gears meshed with the bevel gear ring. A lead screw is arranged in the machining table through a plurality of rotating frames, the surface of the lead screw is in transmission connection with a supporting plate through a lead screw nut, the supporting and fixing structure is provided with a supporting assembly, a driving motor drives a bevel gear ring to rotate, a plurality of bevel gears rotate synchronously, then the lead screw is driven to rotate, and the supporting plate ascends to support the interior of the thin-wall part; by means of the internal supporting mode, pressure and friction force borne by the inner wall of the thin-wall part during polishing can be effectively dispersed, deformation caused by lack of supporting is avoided, the size precision, the shape precision and the surface quality of the bearing thin-wall part are guaranteed, the product percent of pass is increased, and waste products are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of bearing thin-walled component processing technology, specifically relating to a support and fixing structure for anti-deformation bearing thin-walled component processing. Background Technology

[0002] In the field of modern machinery manufacturing, with the advancement of the trend of lightweight and precision equipment development, the application of thin-walled bearing components is becoming more and more widespread. The most significant feature of thin-walled bearing components is their extremely thin wall thickness. Generally, the ratio of wall thickness to outer diameter is smaller than that of ordinary bearings. With their advantages of light weight, space saving and ability to meet specific mechanical performance requirements, thin-walled bearing components have become an indispensable key component for many high-end equipment. However, the inner wall of thin-walled bearing components needs to be polished during production and processing. In order to avoid slippage during the bearing processing, the thin-walled bearing components need to be clamped and fixed during polishing.

[0003] Existing methods often fail to provide effective internal support when polishing the inner wall of thin-walled bearing components. Taking common external clamping fixtures as an example, they mainly achieve fixation by applying clamping force to the outer periphery of the thin-walled component. In this way, the thin-walled component is in a suspended state without support when polishing the inner wall. Since the thin-walled component itself has a very thin wall thickness and poor rigidity, it is very easy for the thin-walled component to deform due to the lack of internal support during the process of the polishing tool contacting the inner wall and applying pressure and friction. This affects the dimensional accuracy, shape accuracy and surface quality of the thin-walled bearing component, causing the product to fail to meet design requirements or even become scrap. Utility Model Content

[0004] The purpose of this utility model is to provide a deformation-resistant support and fixing structure for the processing of thin-walled bearing parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a deformation-resistant support and fixing structure for machining thin-walled bearing parts, comprising:

[0006] A base, the top of which is connected to a processing table, and the top two sides of the processing table are provided with clamping blocks for clamping and fixing the thin-walled bearing parts;

[0007] A support assembly is provided inside the machining table to support the thin-walled bearing component during clamping and fixing. The support assembly includes a bevel gear ring and several bevel gears meshing on the bevel gear ring. A lead screw is provided inside the machining table through several rotating frames, and a support plate is connected to the surface of the lead screw through a lead screw nut.

[0008] Preferably, one end of the lead screw is rotatably connected to the processing table via a bearing, and the other end is connected to a bevel gear. The top end of the support plate slides through an opening provided on the surface of the processing table, and the bottom end is slidably connected to a groove provided inside the processing table.

[0009] Preferably, a sliding rod is connected inside the opening, and the support plate is slidably sleeved on the sliding rod.

[0010] Preferably, the base is equipped with a drive motor and the output shaft of the drive motor is connected to the bevel gear ring.

[0011] Preferably, cylinders are provided on both sides of the top of the processing table, and the piston rods of the cylinders are connected to the clamping blocks.

[0012] Preferably, the surfaces of the clamping block and the support plate are both connected to protective pads.

[0013] Preferably, the top two sides of the processing table are provided with guide rods, the surface of the guide rods is slidably sleeved with a fixed seat and the bottom of the fixed seat is connected to the processing table, and one end of the guide rod is connected to a clamping block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The support fixing structure is equipped with a support component. The drive motor drives the bevel gear ring to rotate, which in turn drives the lead screw to rotate, allowing the support plate to rise and support the inside of the thin-walled part. This internal support method can effectively disperse the pressure and friction on the inner wall of the thin-walled part during polishing, avoid deformation due to lack of support, ensure the dimensional accuracy, shape accuracy and surface quality of the bearing thin-walled part, improve the product qualification rate and reduce the generation of waste.

[0016] (2) The cylinders on both sides of the top of the processing table push the clamping blocks to clamp the thin-walled bearing parts. With the help of the guide rod and the fixed seat, the clamping blocks maintain a stable movement trajectory during the clamping process, avoiding the clamping blocks from shaking and causing the thin-walled bearing parts to shift during processing. This ensures the stability of the thin-walled bearing parts during processing and further guarantees the processing accuracy.

[0017] (3) Protective pads are connected to the surfaces of the clamping block and the support plate. The protective pads are made of rubber or soft plastic and other materials. When clamping and supporting the thin-walled bearing parts, the clamping block and the support plate can avoid direct hard contact with the surface of the thin-walled bearing parts, and prevent scratches and wear on the surface of the thin-walled bearing parts caused by friction or squeezing, thus protecting the surface quality of the thin-walled bearing parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top view of the processing table of this utility model;

[0020] Figure 3 This is a schematic diagram of the meshing structure of the bevel gear ring and bevel gear of this utility model;

[0021] Figure 4 This is a top view of the clamping block of this utility model.

[0022] In the diagram: 1. Base; 2. Machining table; 3. Bearing thin-walled part; 4. Clamping block; 5. Bevel gear ring; 6. Bevel gear; 7. Lead screw; 8. Support plate; 9. Bearing; 10. Opening; 11. Slide rod; 12. Drive motor; 13. Cylinder; 14. Protective pad; 15. Guide rod; 16. Fixed seat. Detailed Implementation

[0023] 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.

[0024] This utility model provides, for example Figure 1-4 The illustrated anti-deformation bearing thin-walled component machining support and fixing structure includes:

[0025] The base 1 has a processing table 2 connected to its top. The processing table 2 has clamping blocks 4 on both sides of its top for clamping and fixing the thin-walled bearing part 3.

[0026] A support assembly, located within the processing table 2, supports the thin-walled bearing component 3 during clamping and fixing. The support assembly includes a bevel gear ring 5 and several bevel gears 6 meshing with the ring 5. A lead screw 7 is mounted within the processing table 2 via several rotating frames. A support plate 8 is connected to the surface of the lead screw 7 via a lead screw nut. A protective cover is installed on the outside of the lead screw 7. The protective cover can be made of a retractable metal bellows. The metal bellows protective cover has good rigidity and protective performance, effectively preventing polishing debris from impacting the lead screw 7. The retractable nature of the metal bellows allows it to adapt to the movement of the lead screw 7, and its good sealing performance prevents small debris from entering. Both ends of the protective cover are fixed to the processing table 2 and the support plate 8 respectively, extending and retracting with the movement of the support plate 8 to maintain protection for the lead screw 7.

[0027] One end of the lead screw 7 is rotatably connected to the processing table 2 via a bearing 9, and the other end is connected to the bevel gear 6. The top end of the support plate 8 slides through the opening 10 provided on the surface of the processing table 2, and the bottom end is slidably connected to the slide groove provided in the processing table 2. The sliding connection can provide stable support for the support plate 8, preventing the support plate 8 from shaking or shifting during movement. At the same time, the slide groove also plays a guiding role, so that the support plate 8 can only move along a specific direction, ensuring the accuracy and stability of the movement.

[0028] A slide rod 11 is connected inside the opening 10, and the support plate 8 is slidably sleeved on the slide rod 11.

[0029] The base 1 is equipped with a drive motor 12, and the output shaft of the drive motor 12 is connected to the bevel gear ring 5.

[0030] The processing table 2 is equipped with cylinders 13 on both sides of the top, and the piston rod of the cylinder 13 is connected to the clamping block 4.

[0031] The surfaces of the clamping block 4 and the support plate 8 are both connected to protective pads 14. The protective pads 14 are made of rubber or soft plastic and other materials. When clamping and supporting the thin-walled bearing 3, they can prevent the clamping block 4 and the support plate 8 from making direct hard contact with the surface of the thin-walled bearing 3, and prevent scratches and wear on the surface of the thin-walled bearing 3 caused by friction or squeezing, thus protecting the surface quality of the thin-walled bearing 3.

[0032] The processing table 2 is provided with guide rods 15 on both sides of the top. A fixed seat 16 is slidably sleeved on the surface of the guide rod 15 and the bottom of the fixed seat 16 is connected to the processing table 2. One end of the guide rod 15 is connected to the clamping block 4. The guide rod 15 provides precise guidance for the movement of the clamping block 4. When the piston rod of the cylinder 13 pushes the clamping block 4 to clamp or release the thin-walled part 3, the clamping block 4 can only move along the axial direction of the guide rod 15. This avoids the clamping block 4 from shaking, deviating or other unstable situations during the movement.

[0033] The anti-deformation bearing thin-walled component processing support and fixing structure, before processing the bearing thin-walled component 3, the operator inputs the corresponding parameters into the control system according to the inner diameter of the bearing thin-walled component 3. The control system calculates the distance the support plate 8 will move and expand accordingly. Then, the thin-walled component is placed on the processing table 2 at a predetermined position between the two clamping blocks 4. The control system starts the drive motor 12, and the output shaft of the drive motor 12 drives the bevel gear ring 5 to rotate. The bevel gear ring 5 meshes with several bevel gears 6, causing the multiple bevel gears 6 to rotate synchronously. Each bevel gear 6 is connected to a lead screw 7, and the rotation of the bevel gear 6 drives the lead screw 7 to rotate. The lead screw 7 nut on the surface of the lead screw 7 is connected to the support plate 8. When the lead screw 7 rotates, the lead screw 7 nut drives the support plate 8 to move linearly along the lead screw 7, causing the support plate 8 to expand in all directions under the drive of the lead screw 7 nut. The bottom of the support plate 8 is slidably connected to the slide groove provided in the processing table 2. The slide groove limits the support plate 8, allowing it to move only in a specific radial direction. The slide rod 11 in the opening 10 further ensures the support. To ensure the stability of plate 8 during expansion and prevent it from shaking or shifting, position sensors (such as photoelectric sensor E3Z-LT61-D1 (Omron) or displacement sensor WDS-100 (Miron)) are installed along the expansion path of support plate 8. The position sensors monitor the position information of support plate 8 in real time and feed the signal back to the control system (PLC controller). After inputting the inner diameter of bearing thin-walled part 3 during the equipment preparation stage, the control system calculates the target position value of support plate 8 expansion. When drive motor 12 is started to expand support plate 8, position sensors start working and continuously collect position data of support plate 8. When position sensors detect that the position of support plate 8 is close to the target position, the control system sends a command to drive motor 12 to reduce the speed of drive motor 12, so that support plate 8 slowly approaches bearing thin-walled part 3. When support plate 8 reaches the target position, position sensors transmit a signal to control system, control system immediately issues a stop command, drive motor 12 stops rotating, and at this time support plate 8 just contacts the inner wall of thin-walled part.

[0034] After the support plate 8 supports the inner wall of the thin-walled bearing part 3, the control system controls the start cylinder 13. The piston in the cylinder 13 generates axial movement under the action of compressed air, which drives the piston rod to extend. The piston rod is connected to the clamping block 4, which pushes the clamping block 4 to move towards the thin-walled part. Due to the guiding effect of the guide rod 15 and the fixed seat 16, the clamping block 4 can only move linearly along the axial direction of the guide rod 15 to ensure stable and accurate movement. The two clamping blocks 4 tightly clamp the support of the support plate 8 supporting the thin-walled part from both sides, providing a stable external clamping force and preventing horizontal displacement of the thin-walled part during processing.

[0035] After the thin-walled bearing component 3 is stably clamped and precisely supported internally, the external polishing equipment can be activated to polish the inner wall of the thin-walled component. Since the support plate 8 supports the bottom of the inner wall of the thin-walled bearing component 3 and, together with the clamping block 4, clamps the bottom of the outer wall of the thin-walled bearing component 3, the high-speed rotation of the polishing tool during the polishing process allows it to contact the inner wall of the thin-walled bearing component 3 located above the support plate 8, cutting and grinding the inner wall surface. After the inner wall polishing is completed, the drive motor 12 is first activated to move the support plate 8 away from the thin-walled bearing component 3. Then, the cylinder 13 is activated to control the piston rod of the cylinder 13 to retract, driving the clamping block 4 to move away from the thin-walled component, releasing the clamping of the thin-walled component. Finally, the finished thin-walled component is removed from the processing table 2, completing the entire processing flow.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deformation-preventing bearing thin-wall part machining support fixing structure, characterized by, include: A base (1) is connected to a processing table (2) on the top of the base (1). The processing table (2) has clamping blocks (4) on both sides of the top of the processing table (2) for clamping and fixing the thin-walled bearing part (3). The support assembly is located inside the processing table (2) and is used to support the thin-walled bearing part (3) when it is clamped and fixed. The support assembly includes a bevel gear ring (5) and several bevel gears (6) meshing on the bevel gear ring (5). A lead screw (7) is provided inside the processing table (2) through several rotating frames. A support plate (8) is connected to the surface of the lead screw (7) through a lead screw nut.

2. The anti-deformation bearing thin-wall part machining support fixing structure according to claim 1, characterized in that: One end of the lead screw (7) is rotatably connected to the processing table (2) via a bearing (9), and the other end is connected to a bevel gear (6). The top end of the support plate (8) slides through the opening (10) on the surface of the processing table (2), and the bottom end is slidably connected to the groove provided in the processing table (2).

3. The anti-deformation bearing thin-wall part machining support fixing structure according to claim 2, characterized in that: The opening (10) is connected to a slide rod (11) and the support plate (8) is slidably sleeved on the slide rod (11).

4. The anti-deformation bearing thin-wall part machining support fixing structure according to claim 1, characterized in that: The base (1) is equipped with a drive motor (12), and the output shaft of the drive motor (12) is connected to the bevel gear ring (5).

5. The anti-deformation bearing thin-wall part machining support fixing structure according to claim 1, characterized in that: The processing table (2) is equipped with cylinders (13) on both sides of the top, and the piston rod of the cylinder (13) is connected to the clamping block (4).

6. The anti-deformation bearing thin-wall part machining support fixing structure according to claim 1, characterized in that: The surfaces of the clamping block (4) and the support plate (8) are both connected to protective pads (14).

7. The anti-deformation bearing thin-walled part machining support and fixing structure according to claim 1, characterized in that: The processing table (2) has guide rods (15) on both sides of the top. A fixed seat (16) is slidably sleeved on the surface of the guide rod (15) and the bottom of the fixed seat (16) is connected to the processing table (2). One end of the guide rod (15) is connected to the clamping block (4).

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