Self-centering chuck fine centering mechanism

Abstract

The utility model relates to the technical field of machining, and discloses a self-centering chuck fine centering mechanism which comprises a base, a chuck body is connected to the upper end of the base, clamping jaw sliding grooves are symmetrically formed in the upper end of the chuck body in a crossed mode, clamping jaws are arranged in the clamping jaw sliding grooves in a sliding mode, driving grooves are formed in the lower ends of the clamping jaws, and a conical tooth disc is rotationally arranged in the chuck body. A spiral groove is formed in the upper end of the bevel gear disc and matched with the driving groove, bevel gears are symmetrically arranged at the lower end of the bevel gear disc and rotationally connected with the chuck body, an inner square rotating hole is formed in the axis end of one end of each bevel gear, and fine adjustment rods are distributed on the circumference of the lower portion of the chuck body. According to the utility model, the eccentric function of the center of the main shaft of the equipment and the center of a clamped part is realized through the adjustment of the fine adjustment rod on the side surface, secondary clamping and an additional eccentric clamp are not needed, the processing time and cost are reduced, all eccentric adjustments are completed through one-time clamping, error accumulation is reduced, and the overall precision of the part is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining, concretely is a self-centering chuck fine tuning mechanism. BACKGROUND

[0002] In the production process of the production industry (the field of machining, assembly, welding and the like) such as the aviation field, some parts need to be adjusted in the production process to be eccentric (eccentricity 1mm or less) twice, and annular parts such as engine components often require a specific eccentric setting between the outer diameter and the inner diameter to meet complex assembly and functional requirements. The traditional processing method usually completes the outer diameter processing first, and then processes the inner diameter through a specially manufactured eccentric clamp. This process not only takes a long time and increases production costs, but also introduces errors due to secondary clamping, affecting the overall accuracy of the parts. Therefore, it is particularly important to develop a mechanism that can flexibly adjust the eccentricity in one clamping. SUMMARY

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a self-centering chuck fine tuning mechanism, which effectively solves the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a self-centering chuck fine tuning mechanism, which comprises a base, a chuck body, a jaw sliding groove, a jaw, a driving groove, a bevel gear plate, a spiral groove, a bevel gear, an inner square hole and a fine tuning rod, the upper end of the base is connected with the chuck body, the upper end of the chuck body is cross-symmetrically provided with a jaw sliding groove, the jaw sliding groove is internally provided with a jaw which slides, the lower end of the jaw is provided with a driving groove, the inside of the chuck body is rotatably provided with a bevel gear plate, the upper end of the bevel gear plate is provided with a spiral groove, the spiral groove is matched with the driving groove, the lower end of the bevel gear plate is symmetrically provided with a bevel gear, the bevel gear is rotatably connected with the chuck body, the inner square hole is formed in the shaft end of one end of the bevel gear, the lower part of the chuck body is circumferentially provided with a fine tuning rod, the fine tuning rod is screwedly connected with the chuck body, and the outer wall of the fine tuning rod is in contact with the inner protruding side wall of the base.

[0005] Preferably, the fine tuning rod is composed of an adjusting head, a tapered variable diameter rod and a threaded rod.

[0006] Compared with the prior art, the utility model has the advantages that:

[0007] The utility model adjusts the fine tuning rod on the side to realize the eccentric function of the center of the main shaft of the equipment and the center of the clamped part, without the need for secondary clamping and additional eccentric clamps, which reduces the processing time and cost, and all eccentric adjustments are completed in one clamping, reducing error accumulation and improving the overall accuracy of the parts. BRIEF DESCRIPTION OF DRAWINGS

[0008] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0009] In the attached diagram:

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0011] Figure 2 This is a top view of the present invention;

[0012] Figure 3 This utility model Figure 2 Schematic diagram of CC cross-section structure;

[0013] Figure 4 This is a schematic diagram of the structure of the fine-tuning rod of this utility model;

[0014] In the diagram: 1. Base; 2. Chuck body; 3. Chuck slide groove; 4. Chuck; 5. Drive slot; 6. Bevel gear disc; 7. Spiral groove; 8. Bevel gear; 9. Internal square spiral hole; 10. Fine adjustment rod; 1001. Adjusting head; 1002. Tapered reducing rod; 1003. Threaded rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Example 1, by Figures 1-4 The present invention includes a base 1, a chuck body 2, a chuck claw groove 3, a chuck claw 4, a drive groove 5, a bevel gear 6, a spiral groove 7, a bevel gear 8, an inner square spiral hole 9, and a fine adjustment rod 10. The upper end of the base 1 is connected to the chuck body 2. The upper end of the chuck body 2 is symmetrically provided with chuck claw grooves 3. The chuck claw 4 is slidably provided inside the chuck claw grooves 3. The lower end of the chuck claw 4 is provided with a drive groove 5. The bevel gear 6 is rotatably provided inside the chuck body 2. The upper end of the bevel gear 6 is provided with a spiral groove 7, which is adapted to the drive groove 5. The lower end of the bevel gear 6 is symmetrically provided with bevel gears 8, which are rotatably connected to the chuck body 2. The axial end of one end of the bevel gear 8 is provided with an inner square spiral hole 9. The lower circumference of the chuck body 2 is provided with a fine adjustment rod 10, which is threadedly connected to the chuck body 2. The outer wall of the fine adjustment rod 10 contacts the inner protruding side wall of the base 1.

[0017] The fine-tuning rod 10 consists of an adjusting head 1001, a tapered reducing rod 1002, and a threaded rod 1003.

[0018] Base 1: as the support foundation of the whole mechanism;

[0019] Chuck body 2: connected to the upper end of base 1, with transmission structure inside;

[0020] Claw sliding slot 3: cross-symmetrically opened at the upper end of chuck body 2, used to guide the sliding of claw 4;

[0021] Claw 4: slidingly arranged in claw sliding slot 3, used to clamp parts;

[0022] Drive slot 5: arranged at the lower end of claw 4, matched with helical groove 7 on bevel gear plate 6, to realize the synchronous movement of claw 4;

[0023] Bevel gear plate 6: rotationally arranged inside chuck body 2, with helical groove 7 on its upper end matched with drive slot 5;

[0024] Helical groove 7: designed on the upper end of bevel gear plate 6, used to drive the radial movement of claw 4;

[0025] Bevel gear 8: symmetrically arranged at the lower end of bevel gear plate 6, rotationally connected with chuck body 2, and can drive bevel gear plate 6 to rotate through rotation;

[0026] Internal four-square rotary hole 9: opened at the shaft end of one end of bevel gear 8, facilitating rotation operation with tools;

[0027] Fine adjustment rod 10: circumferentially distributed at the lower part of chuck body 2, threadedly connected with chuck body 2, and through adjusting the position of fine adjustment rod 10, the fine inclination of bevel gear plate 6 can be realized, and then the clamping center position of claw 4 is changed.

[0028] Working principle: by rotating the adjusting head 1001 of fine adjustment rod 10, the fine adjustment rod 10 moves along the circumferential direction of chuck body 2 through the screw connection principle, and through the tapered variable diameter rod 1002, a lateral force is applied to base 1, since base 1 is fixedly installed on the equipment, the lateral force makes chuck body 2 drive bevel gear plate 6 to slightly incline, since bevel gear plate 6 is connected with claw 4 through helical groove 7 and drive slot 5, the inclination of bevel gear plate 6 will be converted into the radial movement of claw 4, so as to realize the fine adjustment of the clamping center.

[0029] Specifically, adjusting the fine adjustment rods 10 at the upper and lower ends of the chuck can make the clamping center eccentric upward and downward; adjusting the fine adjustment rods 10 at the left and right ends can make the clamping center eccentric left and right;

[0030] By adjusting the fine adjustment rods 10 at different positions, the eccentricity of the clamping center in the upward, downward, leftward and rightward directions can be flexibly controlled.

Claims

1. A self-centering chuck fine centering mechanism, comprising a base (1), a chuck body (2), a jaw sliding groove (3), a jaw (4), a driving groove (5), a bevel gear plate (6), a spiral groove (7), a bevel gear (8), an inner square hole (9) and a fine adjustment rod (10), characterized in that: The base (1) upper end is connected with chuck body (2), chuck body (2) upper end cross symmetry is provided with jaw sliding slot (3), jaw sliding slot (3) inside is provided with jaw (4) sliding, jaw (4) lower end is provided with drive slot (5), chuck body (2) inside is provided with bevel gear (6) rotation, bevel gear (6) upper end is provided with spiral groove (7), spiral groove (7) and drive slot (5) are matched, bevel gear (6) lower end is provided with bevel gear (8) symmetry, bevel gear (8) is connected with chuck body (2) rotation, bevel gear (8) one end's axle core end is provided with inner four square rotary hole (9), chuck body (2) lower part circumferential distribution has fine adjustment rod (10), fine adjustment rod (10) is connected with chuck body (2) thread, and fine adjustment rod (10) outer wall and base (1) inner protruding side wall contact.

2. A self-centering chuck centering fine adjustment mechanism according to claim 1, characterized by: The fine adjustment rod (10) is composed of an adjusting head (1001), a tapered variable diameter rod (1002) and a threaded rod (1003).

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