Fixture for thin-wall part production

Abstract

The utility model discloses a clamp for thin-wall part production, which comprises a clamp plate, a main clamping component, an auxiliary clamping component, a main driving structure and an auxiliary driving structure, the main clamping assembly comprises a plurality of main clamping blocks arranged in an annular array mode, the auxiliary clamping assembly comprises a plurality of auxiliary clamping blocks arranged in an annular array mode, and the main clamping blocks and the auxiliary clamping blocks are sequentially and alternately arranged. The two ends of the main clamping block are provided with inner inclined planes which are inclined inwards, and the two ends of the auxiliary clamping block are provided with outer inclined planes which are inclined outwards; the main driving structure is used for driving the main clamping block to move, the auxiliary driving structure is used for driving the auxiliary clamping block to move, and when the inner inclined face and the outer inclined face of the main clamping block are attached to the inner inclined face and the outer inclined face of the auxiliary clamping block, the outer surfaces of the main clamping block and the auxiliary clamping block define a cylindrical face. The clamp for thin-wall part production has the advantages that the thin-wall part can be stably supported and clamped, the product quality is guaranteed, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a fixture for producing thin-walled parts. Background Art

[0002] Thin-walled parts have the characteristics of light weight, material saving, and compact structure. Cylindrical thin-walled parts are often used in auto parts. However, they have poor rigidity and weak strength, are extremely easy to deform during machining, are not easy to ensure the machining quality of parts, and reduce the product qualification rate.

[0003] In order to clamp and fix the cylindrical thin-walled parts, the following two methods are currently adopted:

[0004] 1. Clamping with a chuck, the clamping force is concentrated, resulting in local deformation of the thin-walled part;

[0005] 2. Adopting internal expansion clamping, there is a gap between adjacent expansion blocks, which will cause local lack of support for the thin-walled part, and the thin-walled part will deform at the lack of support position during machining, affecting the product quality. Summary of the Invention

[0006] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by this patent application is how to provide a fixture for producing thin-walled parts that can stably support and clamp the thin-walled parts, ensure the product quality, and is convenient to use.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A fixture for producing thin-walled parts includes a fixture plate, and also includes a main clamping assembly, an auxiliary clamping assembly, a main driving structure, and an auxiliary driving structure;

[0009] The main clamping assembly includes a plurality of main clamping blocks arranged in a circular array, the auxiliary clamping assembly includes a plurality of auxiliary clamping blocks arranged in a circular array, and the main clamping blocks and the auxiliary clamping blocks are arranged alternately in sequence; both ends of the main clamping block have inwardly inclined inner inclined surfaces, and both ends of the auxiliary clamping block have outwardly inclined outer inclined surfaces;

[0010] The main driving structure is used to drive the main clamping block to move, the auxiliary driving structure is used to drive the auxiliary clamping block to move, and when the inner inclined surfaces and the outer inclined surfaces of the main clamping block and the auxiliary clamping block are in contact, the outer surfaces of the main clamping block and the auxiliary clamping block enclose a cylindrical surface.

[0011] In this way, the fixture plate provides an installation foundation for the fixture. When clamping and fixing a thin-walled cylindrical part, the thin-walled cylindrical part is sleeved outside the fixture and one end abuts against the fixture plate. After the main driving structure drives the main clamping block to move into place, the auxiliary driving structure drives the auxiliary clamping block to move into place. In the in-place state, the inner inclined surfaces and outer inclined surfaces of the main clamping block and the auxiliary clamping block are fitted, and at the same time, the outer surfaces of the main clamping block and the auxiliary clamping block enclose a cylindrical surface, realizing stable support for the thin-walled cylindrical part, facilitating its clamping, and better ensuring the processing quality of the thin-walled cylindrical part.

[0012] Among them, the main driving structure includes two main support disks. A main installation groove is provided on the main support disk. A main rotating shaft is rotatably installed in the main installation groove. A main driving and driven wheel is fixedly installed on the main rotating shaft. The main clamping block is fixed with a main transmission rod. The main support disk is provided with main transmission grooves having the same number as the main transmission rods. A main screw rod is rotatably installed in the main transmission groove. A main nut is threadedly connected to the main screw rod. The main nut is fixedly installed on the main transmission block. The main transmission block is slidably matched with the main transmission groove. The main support disk is provided with a main sliding hole communicating with the main transmission groove. The main transmission rod is slidably matched with the main sliding hole.

[0013] The main driving and driven wheel is connected to the driving pulley through a main belt. Two driving pulleys are fixed on the main linkage rod. A main motor bracket is fixedly installed on one of the main support disks. A main servo motor is fixedly installed on the main motor bracket. The output shaft of the main servo motor is fixedly connected to the main linkage rod.

[0014] The inner end of the main screw rod passes through the main support disk and reaches the main installation groove and is fixed with a first sector gear. A second sector gear meshing with the first sector gear is fixedly installed on the main rotating shaft.

[0015] Among them, the auxiliary driving structure includes two auxiliary support disks. An auxiliary installation groove is provided on the auxiliary support disk. An auxiliary rotating shaft is rotatably installed in the auxiliary installation groove. An auxiliary driving and driven wheel is fixedly installed on the auxiliary rotating shaft. The auxiliary clamping block is fixed with an auxiliary transmission rod. The auxiliary support disk is provided with auxiliary transmission grooves having the same number as the auxiliary transmission rods. An auxiliary screw rod is rotatably installed in the auxiliary transmission groove. An auxiliary nut is threadedly connected to the auxiliary screw rod. The auxiliary nut is fixedly installed on the auxiliary transmission block. The auxiliary transmission block is slidably matched with the auxiliary transmission groove. The auxiliary support disk is provided with an auxiliary sliding hole communicating with the auxiliary transmission groove. The auxiliary transmission rod is slidably matched with the auxiliary sliding hole.

[0016] The auxiliary driving and driven wheel is connected to the auxiliary driving pulley through an auxiliary belt. Two auxiliary driving pulleys are connected through an auxiliary linkage rod. An auxiliary motor bracket is fixedly installed on one of the auxiliary support disks. An auxiliary servo motor is fixedly installed on the auxiliary motor bracket. The output shaft of the auxiliary servo motor is fixedly connected to the auxiliary linkage rod.

[0017] The inner end of the auxiliary screw rod passes through the auxiliary support plate and reaches the auxiliary installation groove, and a third sector gear is fixed thereon. A fourth sector gear meshing with the third sector gear is fixedly installed on the auxiliary rotating shaft.

[0018] The two auxiliary support plates are located between the two main support plates, and the auxiliary support plates are provided with through holes allowing the main linkage rod to pass through.

[0019] The main support plate and the auxiliary support plate, between adjacent auxiliary support plates, and between the main support plate and the fixture plate are fixedly connected by struts.

[0020] Wherein, a linear bearing is fixed in the through hole, and the main linkage rod is matched with the linear bearing.

[0021] Wherein, two main transmission rods are fixed on the main clamping block, and two auxiliary transmission rods are fixed on the auxiliary clamping block.

[0022] In summary, the fixture for thin-walled part production of the present invention has the advantages of being able to stably support and clamp the thin-walled part, ensuring product quality, and being convenient to use. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a fixture for thin-walled part production according to the present invention.

[0024] Figure 2 It is Figure 1 a schematic diagram in the use state.

[0025] Figure 3 It is Figure 1 a schematic diagram with the main clamping block, the auxiliary clamping block and the fixture plate removed.

[0026] Figure 4 It is a partial schematic diagram of the main support plate and the main driving structure. Detailed Embodiment

[0027] The present invention will be further described in detail below with reference to the drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0028] As Figures 1-4 shown, a fixture for thin-walled part production includes a fixture plate 1, and also includes a main clamping assembly, an auxiliary clamping assembly, a main driving structure and an auxiliary driving structure;

[0029] The main clamping assembly includes a plurality of main clamping blocks 2 arranged in a circular array, and the auxiliary clamping assembly includes a plurality of auxiliary clamping blocks 3 arranged in a circular array. The main clamping blocks and the auxiliary clamping blocks are arranged alternately in sequence; both ends of the main clamping block have inner inclined surfaces 4 inclined inwards, and both ends of the auxiliary clamping block have outer inclined surfaces 5 inclined outwards;

[0030] The main driving structure is used to drive the main clamping block to move, and the auxiliary driving structure is used to drive the auxiliary clamping block to move. When the inner inclined surfaces and the outer inclined surfaces of the main clamping block and the auxiliary clamping block are in contact, the outer surfaces of the main clamping block and the auxiliary clamping block enclose a cylindrical surface.

[0031] In this way, the fixture plate provides an installation basis for the fixture. When clamping and fixing a thin-walled cylindrical part, the thin-walled cylindrical part is sleeved outside the fixture and one end abuts against the fixture plate. After the main driving structure drives the main clamping block to move in place, the auxiliary driving structure drives the auxiliary clamping block to move in place. In the in-place state, the inner inclined surfaces and the outer inclined surfaces of the main clamping block and the auxiliary clamping block are in contact, and at the same time, the outer surfaces of the main clamping block and the auxiliary clamping block enclose a cylindrical surface, realizing stable support for the thin-walled cylindrical part, facilitating clamping of it, and better ensuring the processing quality of the thin-walled cylindrical part.

[0032] During implementation, the main driving structure includes two main support disks 11. A main installation groove is provided on the main support disk. A main rotating shaft 12 is rotatably installed in the main installation groove. A main driving and driven wheel 13 is fixedly installed on the main rotating shaft. A main transmission rod 14 is fixed to the main clamping block. The main support disk is provided with main transmission grooves having the same number as the main transmission rods. A main screw rod 15 is rotatably installed in the main transmission groove. A main nut is threadedly connected to the main screw rod. The main nut is fixedly installed on a main transmission block 16. The main transmission block is slidably matched with the main transmission groove. The main support disk is provided with a main sliding hole communicating with the main transmission groove. The main transmission rod is slidably matched with the main sliding hole;

[0033] The main driving and driven wheel is connected to the driving pulley through a main belt 17. Two driving pulleys are fixed on a main linkage rod 18. A main motor bracket 19 is fixedly installed on one of the main support disks. A main servo motor 20 is fixedly installed on the main motor bracket. The output shaft of the main servo motor is fixedly connected to the main linkage rod;

[0034] The inner end of the main screw rod passes through the main support disk and reaches the main installation groove and is fixed with a first sector gear 21. A second sector gear meshing with the first sector gear is fixedly installed on the main rotating shaft.

[0035] In this way, when the main driving structure drives the main clamping block to move synchronously, the main servo motor drives the main linkage rod to rotate, and then drives two driving pulleys to rotate. Through the main belt drive, the main rotating shafts on the two main support disks are driven to rotate. The first sector gear drives the second sector gear and the main screw rod to rotate. Under the limiting action of the main transmission groove, the main nut and the main transmission block move, and then drive the main transmission rod to move. The main sliding hole guides the movement of the main transmission rod, realizing the synchronous movement of the main transmission block and improving the action synchronism.

[0036] During implementation, the auxiliary driving structure includes two auxiliary support disks 22. An auxiliary installation groove is provided on the auxiliary support disk. An auxiliary rotating shaft is rotatably installed in the auxiliary installation groove. An auxiliary driven wheel is fixedly installed on the auxiliary rotating shaft. The auxiliary clamping block is fixed with an auxiliary transmission rod 23. The auxiliary support disk is provided with auxiliary transmission grooves having the same number as the number of auxiliary transmission rods. An auxiliary screw rod is rotatably installed in the auxiliary transmission groove. An auxiliary nut is threadedly connected to the auxiliary screw rod. The auxiliary nut is fixedly installed on the auxiliary transmission block. The auxiliary transmission block is slidably matched with the auxiliary transmission groove. The auxiliary support disk is provided with an auxiliary sliding hole communicating with the auxiliary transmission groove. The auxiliary transmission rod is slidably matched with the auxiliary sliding hole.

[0037] The auxiliary driven wheel is connected to the auxiliary driving pulley through an auxiliary belt. The two auxiliary driving pulleys are connected through an auxiliary linkage rod 24. An auxiliary motor bracket is fixedly installed on one of the auxiliary support disks. An auxiliary servo motor 25 is fixedly installed on the auxiliary motor bracket. The output shaft of the auxiliary servo motor is fixedly connected to the auxiliary linkage rod.

[0038] The inner end of the auxiliary screw rod passes through the auxiliary support disk to reach the auxiliary installation groove and is fixed with a third sector gear. A fourth sector gear meshing with the third sector gear is fixedly installed on the auxiliary rotating shaft.

[0039] The two auxiliary support disks are located between the two main support disks. The auxiliary support disk is provided with a through hole allowing the main linkage rod to pass through.

[0040] The main support disk and the auxiliary support disk, between adjacent auxiliary support disks, and between the main support disk and the fixture plate are fixedly connected through a support rod 26.

[0041] In this way, when the auxiliary driving structure drives the auxiliary clamping block to move synchronously, the auxiliary servo motor drives the auxiliary linkage rod to rotate, and then drives two auxiliary driving pulleys to rotate. Through the auxiliary belt drive, the auxiliary rotating shafts on the two auxiliary support disks are driven to rotate. The third sector gear drives the fourth sector gear and the auxiliary screw rod to rotate. Under the limiting action of the auxiliary transmission groove, the auxiliary nut and the auxiliary transmission block move, and then drive the auxiliary transmission rod to move. The auxiliary sliding hole guides the movement of the auxiliary transmission rod, realizing the synchronous movement of the auxiliary transmission block and improving the action synchronism.

[0042] During implementation, a linear bearing is fixedly installed inside the perforation, and the main linkage rod is matched with the linear bearing, facilitating the guiding of the main linkage rod.

[0043] During implementation, two main transmission rods are fixedly installed on the main clamping block, and two auxiliary transmission rods are fixedly installed on the auxiliary clamping block, improving stability.

[0044] Finally, it should be noted that those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalents, the present utility model also intends to encompass these changes and modifications.

Claims

1. A fixture for producing thin-walled parts, comprising a fixture plate, characterized in that: It also includes a main clamping assembly, an auxiliary clamping assembly, a main drive structure and an auxiliary drive structure; The main clamping assembly includes a plurality of main clamping blocks arranged in a circular array, and the auxiliary clamping assembly includes a plurality of auxiliary clamping blocks arranged in a circular array, and the main clamping blocks and the auxiliary clamping blocks are arranged alternately in sequence; both ends of the main clamping block have inner inclined surfaces arranged inwardly, and both ends of the auxiliary clamping block have outer inclined surfaces arranged outwardly; The main driving structure is used to drive the main clamping block to move, and the auxiliary driving structure is used to drive the auxiliary clamping block to move. When the inner and outer inclined surfaces of the main clamping block and the auxiliary clamping block are in contact with each other, the outer surfaces of the main clamping block and the auxiliary clamping block form a cylindrical surface.

2. A fixture for producing thin-walled parts according to claim 1, characterized in that: The main driving structure comprises two main supporting plates, the main supporting plates are provided with main mounting grooves, a main rotating shaft is rotatably mounted in the main mounting grooves, a main and a slave wheel are fixedly mounted on the main rotating shafts, a main transmission rod is fixedly mounted on the main clamping block, the main supporting plates are provided with main transmission grooves having the same number as the main transmission rods, a main screw is rotatably mounted in the main transmission grooves, a main nut is threadedly connected to the main screw, the main nut is fixedly mounted on the main transmission block, the main transmission block is slidably matched with the main transmission grooves, the main supporting plates are provided with main sliding holes which penetrate the main transmission grooves, and the main transmission rod is slidably matched with the main sliding holes; The master and slave wheels are connected to the driving pulleys through the main belts, the two driving pulleys are fixed on the main linkage rod, a main motor bracket is fixedly installed on one of the main support plates, a main servo motor is fixedly installed on the main motor bracket, and the output shaft of the main servo motor is fixedly connected to the main linkage rod; The inner end of the main screw passes through the main support plate to reach the main installation groove and is fixed with a first sector gear. The main rotating shaft is fixedly mounted with a second sector gear meshing with the first sector gear.

3. A fixture for producing thin-walled parts according to claim 2, characterized in that: The auxiliary driving structure comprises two auxiliary supporting plates, the auxiliary supporting plates are provided with auxiliary mounting grooves, an auxiliary rotating shaft is rotatably mounted in the auxiliary mounting grooves, an auxiliary driven wheel is fixedly mounted on the auxiliary rotating shaft, an auxiliary clamping block is fixed with an auxiliary transmission rod, the auxiliary supporting plates are provided with auxiliary transmission grooves having the same number as the auxiliary transmission rods, an auxiliary screw is rotatably mounted in the auxiliary transmission grooves, an auxiliary nut is threadedly connected to the auxiliary screw, the auxiliary nut is fixedly mounted on the auxiliary transmission block, the auxiliary transmission block is slidably matched with the auxiliary transmission grooves, the auxiliary supporting plates are provided with auxiliary sliding holes which penetrate the auxiliary transmission grooves, and the auxiliary transmission rod is slidably matched with the auxiliary sliding holes; The auxiliary driven pulley is connected to the auxiliary driven pulley through an auxiliary belt, and the two auxiliary driven pulleys are connected through an auxiliary connecting rod, an auxiliary motor bracket is fixedly mounted on one of the auxiliary support plates, an auxiliary servo motor is fixedly mounted on the auxiliary motor bracket, and the output shaft of the auxiliary servo motor is fixedly connected to the auxiliary connecting rod; The inner end of the auxiliary screw passes through the auxiliary support plate and reaches the auxiliary mounting groove and is fixed with a third sector gear, and the auxiliary rotating shaft is fixedly mounted with a fourth sector gear meshing with the third sector gear; The two auxiliary support plates are located between the two main support plates, and the auxiliary support plates are provided with through holes allowing the main linkage rod to pass through; The main support plate and the auxiliary support plate, the adjacent auxiliary support plates, and the main support plate and the fixture plate are fixedly connected by support rods.

4. A fixture for producing thin-walled parts according to claim 3, characterized in that: A linear bearing is fixed in the through hole, and the main connecting rod cooperates with the linear bearing.

5. A fixture for producing thin-walled parts according to claim 1, characterized in that: The main clamping block is fixed with two main transmission rods, and the auxiliary clamping block is fixed with two auxiliary transmission rods.

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