CN219426191U

CN219426191U - Stable clamping mechanism for machining shaft core

Info

Publication number: CN219426191U
Application number: CN202223215720.9U
Authority: CN
Inventors: 董建岳; 何忠义; 王海民
Original assignee: Ningbo Jingxuda Railway Equipment Co ltd
Current assignee: Ningbo Jingxuda Railway Equipment Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-07-28
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a stable clamping mechanism for machining a shaft core, which relates to the technical field of shaft core machining and comprises a fixed table and a power mechanism, wherein the power mechanism is arranged on the fixed table; the rotating mechanism is arranged in the fixed table and can rotate around the axis of the rotating mechanism, and the power mechanism can drive the rotating mechanism to rotate; the clamping mechanism is arranged in the fixed table and is driven to rotate by the rotating mechanism; the tray mechanism is arranged at the bottom of the fixed table and can slide up and down; this stable clamping mechanism is used in axle core processing is through setting up power unit, and rotary mechanism, fixture mutually support for power unit accessible rotary mechanism drives fixture and fixes the axle core stability from three direction, and simple structure.

Description

Stable clamping mechanism for machining shaft core

Technical Field

The utility model relates to the technical field of shaft core machining, in particular to a stable clamping mechanism for shaft core machining.

Background

The hub is generally referred to as a shaft, which is a cylindrical object that passes through the middle of the bearing or the middle of the wheel or gear, but is also somewhat square. A shaft is a mechanical part that supports and rotates with a rotating part to transmit motion, torque, or bending moment. Typically in the form of a metal round rod, the segments may have different diameters. The parts in the machine that are in rotary motion are mounted on the shaft.

When the shaft core is processed, the shaft core needs to be fixed firstly, the shaft core is clamped from two sides by using two parallel clamping blocks by using a common fixing device such as a mechanical vice, the shaft core is fixed from two sides which are not fixed by the clamping blocks, the fixing effect of the shaft core is poor when the strength is high during processing, the fixing shaft core is clamped from at least three directions, the shaft core is fixed and stable in all directions, and the structure of the device which can be clamped and fixed from three directions is relatively complex.

Disclosure of Invention

The utility model aims to provide a stable clamping mechanism for machining a shaft core, which aims to solve the defects in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions: the stable clamping mechanism for machining the shaft core comprises a fixed table and a power mechanism, wherein the power mechanism is arranged on the fixed table; the rotating mechanism is arranged in the fixed table and can rotate around the axis of the rotating mechanism, and the power mechanism can drive the rotating mechanism to rotate; the clamping mechanism is arranged in the fixed table and is driven to rotate by the rotating mechanism; the tray mechanism is arranged at the bottom of the fixed table and can slide up and down.

Further, the rotating mechanism comprises a motor, the motor is a servo motor and can rotate positively and negatively, and the motor is fixedly connected with the fixed table; and the threaded rod is fixedly connected with the motor output shaft and coaxial with the motor output shaft.

Further, the rotating mechanism comprises a toothed ring, the toothed ring is rotationally connected in the fixed table and meshed with the threaded rod, the threaded rod can unilaterally drive the toothed ring to rotate, the threaded rod can drive the toothed ring to rotate when rotating, and the toothed ring can not drive the threaded rod to rotate; the arc-shaped rack is fixedly connected to the inner side of the toothed ring.

Further, the clamping mechanism comprises at least three clamping blocks, preferably three clamping blocks, and the clamping blocks are rotationally connected with the fixed table, are rotationally symmetrical about the axis of the toothed ring, and have equal included angles between two adjacent clamping blocks; and the matching gear is fixedly connected with the clamping block, the axis of the matching gear is collinear with the rotation axis of the clamping block and is meshed with the arc-shaped rack, and the matching gear is used for being driven to rotate by the arc-shaped rack.

Further, a through hole and a chute are formed in the surface of the fixing table, and a limit groove is formed in the inner wall of the chute.

Further, the tray mechanism comprises a plurality of sliding rods which are in sliding connection with the sliding grooves, preferably three sliding rods which are rotationally symmetrical about the axis of the toothed ring, and the included angles between two adjacent sliding rods are equal; the lock comprises a plurality of locks, wherein the locks are uniformly and slidably inserted on the sliding rod, one end of each lock extends out of the sliding rod and is chamfered, and the locks can be inserted with the limiting grooves; the compression spring is arranged in the slide bar, one end of the compression spring is fixedly connected with the slide bar, and the other end of the compression spring is fixedly connected with the lock and used for resetting the lock, so that the slide bar can axially slide when the axial force applied to the slide bar exceeds a certain degree; and the supporting plate is fixedly connected with the lower end of the sliding rod and is used for supporting the shaft core to prevent the shaft core from falling off.

1. Compared with the prior art, the stable clamping mechanism for machining the shaft core is provided with the power mechanism, and the rotating mechanism and the clamping mechanism are mutually matched, so that the power mechanism can drive the clamping mechanism to fix and stabilize the shaft core from three directions through the rotating mechanism, and the stable clamping mechanism is simple in structure.

2. Compared with the prior art, the stable clamping mechanism for machining the shaft core provided by the utility model has the advantages that through holes, the sliding grooves, the limiting grooves and the tray mechanism are arranged, so that the shaft core can be inserted into the through holes, the position of the longer shaft core clamped by the clamping blocks can be optionally adjusted, the longer shaft core can be conveniently machined, the shaft core cannot fall out of the through holes in the clamping and loosening processes, and the shaft core is damaged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall side structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an overall top structure provided by an embodiment of the present utility model;

fig. 3 is a schematic side partial semi-sectional view provided by an embodiment of the present utility model.

Reference numerals illustrate:

11. a fixed table; 12. a through hole; 13. a chute; 14. a limit groove; 21. a motor; 22. a threaded rod; 31. a toothed ring; 32. an arc-shaped rack; 41. clamping blocks; 42. a mating gear; 51. a slide bar; 52. a lock; 53. a compression spring; 54. and a supporting plate.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1-2, a stable clamping mechanism for machining a shaft core comprises a fixing table 11, wherein the bottom of the fixing table 11 is fixedly connected with supporting legs, so that the fixing table 11 is separated from the ground, and the stable clamping mechanism comprises a power mechanism, wherein the power mechanism is arranged on the fixing table 11; the rotating mechanism is arranged in the fixed table 11 and can rotate around the axis of the rotating mechanism, and the power mechanism can drive and limit the rotating mechanism to rotate; the clamping mechanism is arranged in the fixed table 11 and is driven to rotate by the rotating mechanism; and the tray mechanism is arranged at the bottom of the fixed table 11 and can slide up and down.

The rotating mechanism comprises a motor 21, the motor 21 is a servo motor and can rotate positively and negatively, and the motor 21 is fixedly connected with the fixed table 11; the threaded rod 22, threaded rod 22 and motor 21 output shaft fixed connection, threaded rod 22 and motor 21 output shaft coaxial line.

The rotating mechanism comprises a toothed ring 31, the toothed ring 31 is rotationally connected in the fixed table 11 and meshed with the threaded rod 22, the threaded rod 22 can unilaterally drive the toothed ring 31 to rotate, the threaded rod 22 can drive the toothed ring 31 to rotate, and the toothed ring 31 can not drive the threaded rod 22 to rotate; arc rack 32, arc rack 32 fixed connection is in the inboard of ring gear 31.

The clamping mechanism comprises at least three clamping blocks 41, preferably three clamping blocks 41 are rotationally connected with the fixed table 11, the clamping blocks 41 are rotationally symmetrical about the axis of the toothed ring 31, and the included angles between two adjacent clamping blocks 41 are equal; the matching gear 42, the matching gear 42 is fixedly connected with the clamping block 41, and the axis of the matching gear 42 is collinear with the rotation axis of the clamping block 41 and meshed with the arc-shaped rack 32 for being driven to rotate by the arc-shaped rack 32.

Embodiment two:

referring to fig. 2-3, the present embodiment provides a technical solution based on the first embodiment: the surface of the fixed table 11 is provided with a through hole 12 and a chute 13, and the inner wall of the chute 13 is provided with a limit groove 14.

The tray mechanism comprises a plurality of sliding rods 51, preferably three sliding rods 51, which are rotationally symmetrical about the axis of the toothed ring 31, wherein the sliding rods 51 are in sliding connection with the sliding grooves 13, and the included angles between two adjacent sliding rods 51 are equal; the lock 52 is in a plurality of even sliding connection with the slide rod 51, one end of the lock 52 extends out of the slide rod 51 and is chamfered, and the lock 52 can be connected with the limit groove 14 in a plug connection manner; the compression spring 53, the compression spring 53 is set up in slide bar 51, one end is fixedly connected with slide bar 51, another end is fixedly connected with lock 52, is used for resetting lock 52, make slide bar 51 can axially slide when the axial force that slide bar 51 receives exceeds a certain degree; the supporting plate 54, the supporting plate 54 is fixedly connected with the lower end of the sliding rod 51, and is used for supporting the shaft core to prevent the shaft core from falling off.

Working principle: when the sliding rod 51 is used, the shaft core is inserted between the three clamping blocks 41, the lower end of the shaft core is in contact with the insertion through hole 12 and the supporting plate 54, the supporting plate 54 is pushed to move downwards through the shaft core, the supporting plate 54 drives the sliding rod 51 and the lock 52 which is inserted in the sliding rod 51 in a sliding manner to pass through the sliding groove 13, and when the lock 52 passes through the sliding groove 13, the edge of the limiting groove 14 formed in the inner wall of the sliding groove 13 pushes the inner side of the sliding rod 51, so that the compression spring 53 is compressed. Until the proper position of the shaft core is opposite to the clamping block 41, so that the part of the shaft core to be processed exceeds the clamping block 41, thereby facilitating the processing.

Then the motor 21 rotates, the toothed ring 31 is driven to rotate by the threaded rod 22 fixedly connected to the output shaft of the motor, the arc-shaped rack 32 fixedly connected to the inner side of the toothed ring 31 rotates along with the toothed ring, the arc-shaped rack 32 drives the matched gear 42 meshed with the toothed ring to rotate, the clamping blocks 41 fixedly connected with the matched gear 42 rotate around the axis of the clamping blocks, and at the moment, the three clamping blocks 41 synchronously rotate inwards in the same way and approach to the shaft core until the shaft core is clamped, so that the shaft core is fixed.

So that the motor 21 rotates reversely, the clamping blocks 41 are loosened, and the shaft core is supported by the supporting plate 54 and cannot fall from the through hole 12.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a stable clamping mechanism is used in axle core processing, includes fixed station (11), its characterized in that: comprises a power mechanism which is arranged on a fixed table (11);

the rotating mechanism is arranged in the fixed table (11) and can rotate around the axis of the rotating mechanism, and the power mechanism can drive the rotating mechanism to rotate;

the clamping mechanism is arranged in the fixed table (11) and is driven to rotate by the rotating mechanism;

the tray mechanism is arranged at the bottom of the fixed table (11) and can slide up and down.

2. The stable clamping mechanism for machining a shaft core according to claim 1, wherein: the rotating mechanism comprises a motor (21), and the motor (21) is fixedly connected with the fixed table (11);

the threaded rod (22), threaded rod (22) and motor (21) output shaft fixed connection.

3. The stable clamping mechanism for machining a shaft core according to claim 2, wherein: the rotating mechanism comprises a toothed ring (31), the toothed ring (31) is rotatably connected in the fixed table (11) and meshed with the threaded rod (22), and the threaded rod (22) can unilaterally drive the toothed ring (31) to rotate;

the arc-shaped rack (32), the arc-shaped rack (32) is fixedly connected to the inner side of the toothed ring (31).

4. A stable clamping mechanism for machining a shaft core according to claim 3, wherein: the clamping mechanism comprises clamping blocks (41), and at least three clamping blocks (41) are rotatably connected with the fixed table (11);

and the matching gear (42) is fixedly connected with the clamping block (41) and meshed with the arc-shaped rack (32) and is used for being driven to rotate by the arc-shaped rack (32).

5. The stable clamping mechanism for machining a shaft core according to claim 1, wherein: the surface of the fixed table (11) is provided with a through hole (12) and a chute (13), and the inner wall of the chute (13) is provided with a limit groove (14).

6. The stable clamping mechanism for machining a shaft core according to claim 5, wherein: the tray mechanism comprises a sliding rod (51), and the sliding rod (51) is in sliding connection with the sliding groove (13);

the lock comprises a plurality of locks (52), wherein the locks (52) are uniformly and slidably inserted on the sliding rod (51), one end of each lock (52) extends out of the sliding rod (51) and is chamfered, and each lock (52) can be inserted with the limiting groove (14);

the compression spring (53) is arranged in the sliding rod (51), one end of the compression spring (53) is fixedly connected with the sliding rod (51), and the other end of the compression spring is fixedly connected with the lock (52) and used for resetting the lock (52);

and the supporting plate (54) is fixedly connected with the lower end of the sliding rod (51).