Tool clamp for thin-wall annular part

Abstract

The utility model relates to the technical field of machining auxiliary equipment, in particular to a thin-wall annular part tool clamp which comprises a base and at least one clamping mechanism, and the clamping mechanism comprises a plurality of clamping assemblies which are annularly distributed and can move in the radial direction. The clamping assembly is composed of a clamping base, a sliding rod, an elastic pressing component and the like, and the elastic pressing component is matched with an elastic compression spring through an arc-shaped gasket to achieve elastic clamping. The number of the clamping assemblies can be two, the two clamping assemblies are distributed oppositely, the base is provided with a sliding groove, a sliding block, a two-way screw and a driving motor, and synchronous movement of the clamping assemblies is achieved. According to the tool clamp, clamping deformation of the thin-wall annular part is avoided through the elastic pressing part, uniform clamping and rapid clamping are achieved through the multi-assembly annular distribution and synchronous driving structure, the part machining precision and clamping efficiency are effectively improved, and the tool clamp is suitable for various thin-wall annular part machining scenes.

Description

Technical Field

[0001] This application relates to the field of auxiliary equipment for machining, and in particular to a tooling fixture for thin-walled annular parts. Background Technology

[0002] In the field of machining, thin-walled ring-shaped parts are widely used in many industries such as aerospace, automobile manufacturing, and precision instruments due to their advantages such as light weight and material saving. However, due to the inherent structural characteristics of thin-walled ring-shaped parts, they have poor rigidity and are prone to deformation, which places extremely high demands on tooling and fixtures during the machining process.

[0003] Traditional tooling fixtures present numerous problems when positioning and clamping thin-walled annular parts. On one hand, rigid clamping methods can lead to uneven force distribution, causing excessive localized stress on the thin-walled annular part and resulting in deformation, severely impacting machining accuracy and quality. For example, in machining thin-walled annular seals in automotive engines, deformation caused by traditional rigid clamping can significantly reduce the seal's sealing performance, affecting the engine's overall performance and reliability. On the other hand, existing clamping devices with elastic buffering functions lack sufficient flexibility in their adjustment, making it difficult to precisely adjust for thin-walled annular parts of different sizes and materials, resulting in poor clamping performance and failing to meet diverse machining needs.

[0004] To address the problems mentioned above, a thin-walled annular part tooling fixture has been invented. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling fixture for thin-walled annular parts. Through reasonable structural design, it solves the problems of easy deformation of parts, poor clamping effect and complicated operation in existing tooling fixtures when positioning and clamping thin-walled annular parts. It realizes accurate positioning and uniform clamping of thin-walled annular parts, improves processing accuracy and clamping efficiency, and meets the processing needs of thin-walled annular parts of different sizes and materials.

[0006] This application provides a tooling fixture for thin-walled annular parts, which adopts the following technical solution: it includes a base, wherein it further includes at least one clamping mechanism disposed on the base for positioning and clamping the thin-walled annular part, the clamping mechanism including a plurality of clamping components distributed along the ring and movable radially to clamp or release the thin-walled annular part.

[0007] Optionally, the clamping assembly includes a clamping base, which is disposed on a base. The base has multiple guide grooves evenly distributed along its circumference. A sliding rod is slidably connected in the guide groove, and an elastic pressing component is provided at the other end of the sliding rod.

[0008] Optionally, the elastic clamping component includes multiple arc-shaped pads, which can slide radially on the sliding rod. An elastic compression spring is provided on the arc-shaped pad, and the other end of the elastic compression spring is fixedly connected to the sliding rod.

[0009] Optionally, the clamping base is provided with inclined grooves corresponding to the elastic pressing components on its periphery. A sliding strip is provided in the inclined groove, and the sliding rod is provided on the sliding strip. A movable seat is provided in the middle of the clamping base. The other end of the sliding strip is inserted into the movable seat and can slide within the movable seat. A rotating screw is provided on the clamping base, and a wheel is provided at one end of the rotating screw.

[0010] Optionally, the number of clamping components is set to two, and they are distributed in pairs on the base.

[0011] Optionally, the base is provided with a sliding groove, and two sliding blocks are respectively provided on both sides of the sliding groove. The sliding blocks are fixedly connected to the clamping base. A rotatable bidirectional screw is provided in the sliding groove. The two sliding blocks are respectively threadedly connected to the bidirectional screw. A drive motor is provided on the base, and the output end of the drive motor is fixedly connected to the bidirectional screw.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. Preventing part deformation: By setting multiple clamping components distributed in a ring and movable in the radial direction, in conjunction with elastic clamping components, uniform clamping of thin-walled ring parts can be achieved, effectively avoiding the deformation problem caused by excessive local force on parts due to traditional rigid clamping methods, and improving the machining accuracy and quality of parts.

[0014] 2. Precise adjustment of clamping force: The arc-shaped pad in the elastic clamping component can slide radially and is equipped with an elastic compression spring, which can flexibly adjust the clamping force according to the thin-walled ring parts of different sizes and materials, ensuring the reliability and stability of the clamping effect.

[0015] 3. Improve clamping efficiency: The clamping components are set to two and distributed in opposite directions. Together with the drive motor and bidirectional screw structure on the base, they can achieve fast and synchronous clamping and loosening, which simplifies the operation process, greatly improves clamping efficiency, and reduces production costs.

[0016] 4. Stable and reliable structure: The clamping base and the base are connected by a guide groove, a sliding rod and other structural components, as well as a rotating screw and a movable seat, which ensures the stability and reliability of the clamping assembly during operation and extends the service life of the tooling fixture. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of the device;

[0018] Figure 2 This is a top view of the device;

[0019] Figure 3 This is a cross-sectional schematic diagram of the overall structure of this device;

[0020] Figure 4 This is a cross-sectional view of the clamping base of this device;

[0021] Figure 5 For this device Figure 3 Enlarged view of A in the middle;

[0022] Figure 6 For this device Figure 1 Enlarged view of B in the middle;

[0023] Among them, 1. base, 2. clamping mechanism, 3. clamping assembly, 4. clamping base, 5. guide groove, 6. sliding rod, 7. elastic pressing component, 8. arc-shaped washer, 9. elastic compression spring, 10. inclined groove, 11. sliding bar, 12. movable seat, 13. rotating screw, 14. rotating wheel, 15. sliding groove, 16. sliding block, 17. bidirectional screw, 18. drive motor. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element 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 the present utility model.

[0025] Reference Figure 1One embodiment is shown: a thin-walled annular part tooling fixture includes a base 1, on which at least one clamping mechanism 2 is fixedly mounted. This clamping mechanism 2 is used for positioning and clamping the thin-walled annular part. The clamping mechanism 2 consists of multiple clamping components 3, which are evenly distributed along the annulus on the base 1 and are capable of moving radially on the base 1. This movement enables the clamping or loosening of the thin-walled annular part. In this embodiment, the base 1 serves as the foundation of the entire tooling fixture, providing a mounting and support platform for the clamping mechanism 2. The clamping mechanism 2 is securely connected to the base 1, ensuring stability during clamping and loosening of the part. The multiple clamping components 3 are distributed around the base 1, and their radial movement allows them to flexibly approach or move away from the thin-walled annular part, thereby achieving precise positioning and clamping.

[0026] The implementation principle of the above embodiment is as follows: when it is necessary to clamp a thin-walled annular part, multiple clamping components 3 move simultaneously radially toward the part until the part is clamped and fixed; when it is necessary to release the part, the clamping components 3 move radially in the opposite direction to release the clamping force on the part, facilitating the removal and placement of the part. In this way, the thin-walled annular part can be effectively clamped to meet processing requirements.

[0027] Reference Figure 1 , Figure 2 One embodiment shown is as follows: The clamping assembly 3 includes a clamping base 4, which is fixedly mounted on the base 1 by bolts or other means, providing a mounting base for other components of the clamping assembly 3. The base 1 has multiple guide grooves 5 evenly distributed circumferentially. The guide grooves 5 and the sliding rod 6 are fitted with a clearance to form a sliding connection, allowing the sliding rod 6 to slide smoothly radially within the guide grooves 5. One end of the sliding rod 6 is located within the guide groove 5, and the other end is connected to an elastic clamping component 7. In this embodiment, the clamping base 4 is tightly connected to the base 1, ensuring the overall stability of the clamping assembly 3; the guide grooves 5 provide a precise guiding path for the sliding rod 6, restricting its movement direction so that it can only move radially; the sliding rod 6 is connected to the elastic clamping component 7, which moves the elastic clamping component 7 closer to or away from the thin-walled annular part during sliding. This connection allows the clamping assembly 3 to move radially stably on the base 1, and through the cooperation of the sliding rod 6 and the elastic clamping component 7, elastic clamping of the part is achieved, avoiding deformation of the part caused by rigid clamping.

[0028] The implementation principle of the above embodiment is as follows: When it is necessary to clamp a thin-walled annular part, the external force causes the sliding rod 6 to slide radially toward the part in the guide groove 5, which drives the elastic clamping component 7 to gradually approach the part; when the elastic clamping component 7 contacts the part, the external force continues to be applied, and the elastic clamping component 7 generates elastic deformation, applying clamping force to the part; when the part is released, the external force is removed, and the sliding rod 6 slides radially in the opposite direction under the restoring force of the elastic clamping component 7 or other external forces, and the elastic clamping component 7 separates from the part, thus realizing the release of the part.

[0029] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 One embodiment shown is as follows: the elastic clamping component 7 consists of multiple arc-shaped washers 8 and elastic springs 9. The arc-shaped washers 8 are fitted onto the sliding rod 6, with a certain gap between them, allowing the arc-shaped washers 8 to slide freely radially on the sliding rod 6. The surface shape of the arc-shaped washers 8 is adapted to the outer surface of the thin-walled annular part, enabling better fit. Elastic springs 9 are fixedly installed on the arc-shaped washers 8 by welding, riveting, or other methods, and the other end of the elastic springs 9 is fixedly connected to the sliding rod 6 by welding. In this embodiment, the sliding connection between the arc-shaped washers 8 and the sliding rod 6 allows for adaptive adjustment based on the shape of the part's surface and the stress conditions during clamping; the arc-shaped washers 8 are connected to the elastic springs 9, and when subjected to external pressure, the arc-shaped washers 8 compress the elastic springs 9, with the reaction force generated by the elastic springs 9 acting evenly on the thin-walled annular part through the arc-shaped washers 8; the fixed connection between the elastic springs 9 and the sliding rod 6 ensures effective transmission of elastic force. This connection allows the elastic clamping component 7 to flexibly adjust the clamping force according to the actual situation of the part, achieving uniform and elastic clamping of thin-walled annular parts, effectively preventing the parts from deforming due to excessive local force.

[0030] The implementation principle of the above embodiment is as follows: When the sliding rod 6 drives the elastic clamping component 7 close to the thin-walled annular part, the arc-shaped pad 8 first contacts the surface of the part. As the sliding rod 6 continues to move, the arc-shaped pad 8 slides inward along the sliding rod 6 under the obstruction of the surface of the part, compressing the elastic spring 9. The elastic force generated by the elastic spring 9 is evenly applied to the part through the arc-shaped pad 8 to achieve clamping. When it is necessary to release the part, the sliding rod 6 moves in the opposite direction, the elastic spring 9 gradually returns to its original state, and drives the arc-shaped pad 8 to slide outward along the sliding rod 6, separating from the part and completing the release operation.

[0031] Reference Figure 3 , Figure 4 , Figure 5One embodiment is shown as follows: The clamping base 4 has inclined grooves 10 on its periphery, the same number and corresponding in position as the elastic clamping components 7. Each inclined groove 10 contains a sliding strip 11, which is clearance-fitted to the groove 10, allowing it to slide freely within the groove. A sliding rod 6 is fixedly mounted on the sliding strip 11 by welding, bolting, or other means, and moves as the sliding strip 11 slides. A movable seat 12 is located in the middle of the clamping base 4. The other end of the sliding strip 11 is inserted into the movable seat 12, forming a sliding fit and allowing it to slide within the movable seat 12. A rotating screw 13 is installed on the clamping base 4 via a threaded connection or other means. One end of the rotating screw 13 extends out of the clamping base 4 and is fixedly mounted with a rotating wheel 14. In this embodiment, the cooperation between the inclined groove 10 and the sliding bar 11 provides a sliding track for the sliding bar 11 and restricts the direction of movement of the sliding bar 11. The sliding bar 11 is connected to the sliding rod 6, driving the sliding rod 6 to move. The movable seat 12 provides support and guidance for the other end of the sliding bar 11, ensuring the stability of the sliding bar 11 during movement. The rotating screw 13 is threadedly connected to the clamping base 4. When the rotating wheel 14 is rotated, the rotating screw 13 can rotate and move axially on the clamping base 4. The rotating screw 13 is connected to the movable seat 12. The axial movement of the rotating screw 13 pushes the movable seat 12, thereby driving the sliding bar 11 to slide in the inclined groove 10, realizing the radial movement of the sliding rod 6 and the elastic clamping component 7. This connection relationship allows the movement of the elastic clamping component 7 to be easily controlled by rotating the rotating wheel 14, realizing the clamping and loosening operation of the thin-walled annular part. The operation is simple and the clamping force is adjustable.

[0032] The implementation principle of the above embodiment is as follows: When the rotating wheel 14 is rotated, the rotating screw 13 rotates on the clamping base 4 and moves axially, pushing the movable seat 12 to move; the movement of the movable seat 12 causes the sliding strip 11 inserted therein to slide in the inclined groove 10. Since the sliding rod 6 is fixed on the sliding strip 11, the sliding rod 6 also moves radially, causing the elastic pressing component 7 to approach the thin-walled annular part and achieve clamping; when the rotating wheel 14 is rotated in the opposite direction, the rotating screw 13 moves in the opposite direction, and the movable seat 12, the sliding strip 11 and the sliding rod 6 move in the opposite direction under the restoring force of the elastic pressing component 7 or other external forces, and the elastic pressing component 7 separates from the part, completing the release operation.

[0033] Reference Figure 1 , Figure 2One embodiment shown is as follows: Based on a thin-walled annular part tooling fixture, the number of clamping components 3 is determined to be two. In this embodiment, the two clamping components 3 are distributed on the base 1 in a relatively opposite manner, i.e., in a counter-directional distribution. This distribution allows the two clamping components 3 to apply clamping force to the thin-walled annular part from two opposing directions. Compared to a single clamping component 3 or multiple asymmetrically distributed clamping components 3, the two counter-directionally distributed clamping components 3 can more effectively balance the clamping force on the part, preventing the part from shifting or deforming during clamping. Simultaneously, this symmetrical structural design makes the tooling fixture more uniformly stressed during operation, improving the overall stability and reliability of the tooling fixture, reducing machining errors caused by uneven stress, and ensuring machining accuracy.

[0034] The implementation principle of the above embodiment is as follows: when clamping the thin-walled annular part, two opposing clamping components 3 move toward the part at the same time and apply clamping force from opposite directions to stably fix the part on the base 1; when releasing, the two clamping components 3 move in opposite directions at the same time so that the part can be easily removed.

[0035] Reference Figure 2 , Figure 3 , Figure 4 One embodiment shown is as follows: a sliding groove 15 is provided on the base 1. In this embodiment, sliding blocks 16 are respectively provided on both sides of the sliding groove 15. The sliding blocks 16 and the sliding groove 15 are connected by a clearance fit, allowing the sliding blocks 16 to slide smoothly within the sliding groove 15. The sliding blocks 16 are connected to the clamping base 4 by welding or bolting, thereby fixing the clamping base 4 and the sliding blocks 16 into a whole. A bidirectional screw 17 is installed in the sliding groove 15. The two ends of the bidirectional screw 17 are rotatably installed by bearing connection to the inner wall of the sliding groove 15. The two sliding blocks 16 are respectively connected to the bidirectional screw 17 by threaded connection, and engage with the threaded sections of the bidirectional screw 17 with different directions of rotation. A drive motor 18 is installed on the base 1 by bolting or other means. The output end of the drive motor 18 is connected to the bidirectional screw 17 by coupling or other fixed connection methods. The sliding connection between the sliding block 16 and the sliding groove 15, combined with the threaded connection between the sliding block 16 and the bidirectional screw 17, allows the two sliding blocks 16 to move synchronously in opposite directions within the sliding groove 15 when the drive motor 18 drives the bidirectional screw 17 to rotate. This, in turn, causes the clamping base 4 and the clamping assembly 3 to move synchronously closer to or further away from the thin-walled annular part. The fixed connection between the drive motor 18 and the bidirectional screw 17 provides a stable power source for the rotation of the bidirectional screw 17, enabling the clamping assembly 3 to be driven quickly and synchronously, thus greatly improving clamping efficiency.

[0036] The implementation principle of the above embodiment is as follows: Start the drive motor 18, and the drive motor 18 drives the bidirectional screw 17 to rotate. Since the threaded sections with different directions of rotation on the bidirectional screw 17 are threadedly connected to the two sliding blocks 16, the rotation of the bidirectional screw 17 will cause the two sliding blocks 16 to move synchronously in opposite directions in the sliding groove 15. The sliding blocks 16 drive the clamping base 4 and the clamping assembly 3 to approach or move away from the thin-walled annular part, thereby realizing the clamping or loosening operation of the part.

[0037] The working principle of this device is as follows: During clamping, the drive motor 18 is started to drive the bidirectional screw 17 to rotate. The sliding block 16, which is threadedly connected to the bidirectional screw 17, moves in the sliding groove 15, causing the clamping base 4 and clamping assembly 3 to approach the thin-walled annular part. Rotating the wheel 14 causes the rotating screw 13 to rotate, pushing the movable seat 12 to move, which in turn causes the sliding strip 11 to slide in the inclined groove 10 of the clamping base 4. The sliding rod 6 moves radially in the guide groove 5, so that the elastic pressing component 7 contacts the part. As the sliding rod 6 continues to move, the arc-shaped pad 8 slides along the sliding rod 6 and compresses the elastic spring 9. The elastic force generated by the elastic spring 9 is evenly applied to the part through the arc-shaped pad 8. Multiple clamping assemblies 3 work together to clamp the part. After processing, the wheel 14 and drive motor 18 are rotated in the opposite direction. The elastic spring 9 returns to its original deformation, causing the arc-shaped pad 8 to reset. The clamping assembly 3 moves away from the part, and the part can be easily removed, completing the entire clamping and processing process.

[0038] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. 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 protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tooling fixture for thin-walled annular parts, comprising a base (1), characterized in that: It also includes at least one clamping mechanism (2) disposed on the base (1) for positioning and clamping the thin-walled annular part, the clamping mechanism (2) including a plurality of clamping assemblies (3) distributed in a ring and movable in a radial direction to clamp or release the thin-walled annular part.

2. The thin-walled annular part tooling fixture according to claim 1, characterized in that: The clamping assembly (3) includes a clamping base (4), which is disposed on a base (1). The base (1) has multiple guide grooves (5) evenly distributed along its circumference. A sliding rod (6) is slidably connected in the guide groove (5), and an elastic pressing component (7) is provided at the other end of the sliding rod (6).

3. The thin-walled annular part tooling fixture according to claim 2, characterized in that: The elastic pressing component (7) includes multiple arc-shaped pads (8), which can slide on the sliding rod (6) in the radial direction. An elastic compression spring (9) is provided on the arc-shaped pad (8), and the other end of the elastic compression spring (9) is fixedly connected to the sliding rod (6).

4. The thin-walled annular part tooling fixture according to claim 3, characterized in that: The clamping base (4) has a sloping groove (10) on its periphery that corresponds one-to-one with the elastic pressing component (7). A sliding strip (11) is provided in the sloping groove (10). The sliding rod (6) is provided on the sliding strip (11). A movable seat (12) is provided in the middle of the clamping base (4). The other end of the sliding strip (11) is inserted into the movable seat (12) and can slide in the movable seat (12). A rotating screw (13) is provided on the clamping base (4). A rotating wheel (14) is provided at one end of the rotating screw (13).

5. The thin-walled annular part tooling fixture according to claim 1, characterized in that: The number of clamping components (3) is set to two, and they are distributed in pairs on the base (1).

6. The thin-walled annular part tooling fixture according to claim 5, characterized in that: The base (1) is provided with a sliding groove (15), and two sliding blocks (16) are respectively provided on both sides of the sliding groove (15). The sliding blocks (16) are fixedly connected to the clamping base (4). A rotatable bidirectional screw (17) is provided in the sliding groove (15). The two sliding blocks (16) are respectively threaded to the bidirectional screw (17). A drive motor (18) is provided on the base (1), and the output end of the drive motor (18) is fixedly connected to the bidirectional screw (17).

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