CN219598808U

CN219598808U - High-precision high-efficiency combined clamp

Info

Publication number: CN219598808U
Application number: CN202320113555.1U
Authority: CN
Inventors: 陈平; 李艳
Original assignee: Muchuan Transmission Technology Zhejiang Co ltd
Current assignee: Muchuan Transmission Technology Zhejiang Co ltd
Priority date: 2023-01-20
Filing date: 2023-01-20
Publication date: 2023-08-29
Anticipated expiration: 2033-01-20

Abstract

The utility model provides a high-precision high-efficiency combined clamp, which comprises a machine tool spindle, a motor for driving the machine tool spindle to rotate, and a chuck seat synchronously rotating with the machine tool spindle; a chuck assembly rotating synchronously with the chuck base; the utility model can improve the machining precision and save energy.

Description

High-precision high-efficiency combined clamp

Technical Field

The utility model relates to the technical field of clamps, in particular to a high-precision and high-efficiency combined clamp.

Background

When processing circular parts, the circular parts are required to be clamped and fixed, the existing mechanical clamping is usually not synchronous rotation between the clamp and the rotating main shaft, rotating clamping can occur at the connecting end face, the service life of the machine is influenced, the precision in processing cannot be guaranteed, and the higher the axial height is, the larger the processing error is, and the higher the defective rate is.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a high-precision high-efficiency combined clamp, which solves the problem of end surface clamping when a main shaft and a clamp rotate at the joint by synchronously rotating the main shaft and the clamp.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the high-precision high-efficiency combined clamp comprises a machine tool spindle and a motor for driving the machine tool spindle to rotate, and is characterized by further comprising a chuck seat which rotates synchronously with the machine tool spindle;

a chuck assembly rotating synchronously with the chuck base; and

driving chuck assembly axially moves along machine tool spindle to match chuck base for clamping workpiece

A movable assembly.

Preferably, a working space is formed in the chuck base, a conical sleeve is arranged in the working space, and the chuck assembly comprises an elastic chuck piece, a plurality of clamping heads and fixed ends, wherein the clamping heads are in butt joint with the conical sleeve, and the fixed ends are positioned in the working space;

a first elastic member positioned between adjacent clamping heads; and

a jaw assembly located inside the plurality of gripping heads.

Preferably, the clamping jaw assembly comprises a plurality of clamping jaws arranged on the inner sides of the plurality of clamping heads and a second elastic member positioned between the adjacent clamping jaws.

Preferably, a plurality of clamping grooves with different sizes are sequentially formed in the clamping jaw assembly.

Preferably, a positioning block is arranged on one side, close to the clamping jaw assembly, of the fixed end.

Preferably, the elastic grooves are uniformly formed in the outer peripheral side of the elastic chuck piece.

Preferably, the clamping jaws are arranged in one-to-one correspondence with the clamping heads.

Preferably, the main shaft of the machine tool is connected with the motor through a belt wheel and a conveyor belt, and the belt wheel and the main shaft are connected through a tension sleeve.

The utility model has the beneficial effects that:

(1) According to the utility model, the spindle and the chuck assembly are designed into a whole, so that the machining precision is increased in a synchronous rotation mode, the clamping jaw assembly is arranged in the chuck assembly to facilitate the replacement of the clamping jaw assembly, and the clamping groove is arranged in the clamping jaw assembly, so that workpieces with different sizes and shapes can be clamped, and the same universality and inventiveness of clamping are improved.

(2) A plurality of elastic grooves are formed in the elastic chuck piece, so that the elastic limit of contraction among the clamping jaws is increased, the difficulty of contraction among the clamping jaws is reduced, the load is reduced for the rotary oil hydraulic cylinder, and energy is saved.

(3) According to the utility model, the precision of the belt wheel and the spindle during rotation is increased by arranging the tension sleeve between the belt wheel and the spindle, and meanwhile, the belt wheel is convenient to detach and replace, so that the service life of the belt wheel is prolonged.

In conclusion, the utility model has the advantages of high processing precision, energy conservation and the like.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion of the portion I of FIG. 2;

FIG. 4 is a schematic view of a resilient clip member of the present utility model;

FIG. 5 is a schematic view of a jaw assembly of the present utility model;

FIG. 6 is a schematic view of an elastic trough of the present utility model;

FIG. 7 is a schematic view of the collet assembly and jaw assembly of the present utility model;

FIG. 8 is a schematic view of a tension sleeve of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Example 1

As shown in fig. 1-2, the present embodiment provides a high-precision high-efficiency combined fixture, which comprises a machine tool spindle 1, a motor 2 for driving the machine tool spindle 1 to rotate, and a chuck base 3 for rotating synchronously with the machine tool spindle 1;

a chuck assembly 4 rotating in synchronization with the chuck base 3; and

the chuck assembly 4 is driven to axially move along the machine tool spindle 1 so as to be matched with the chuck base 3 to clamp the workpiece 5

A tight drive assembly 6.

In this embodiment, the driving component 6 is a rotary hydraulic cylinder, the pull rod 61 of the rotary hydraulic cylinder is located inside the rotating shaft 1, and the chuck base 3 and the chuck component 4 rotate synchronously with the spindle, so that the chuck component 4 and the spindle 1 are integrated, and there is no differential speed therebetween, thereby increasing the stability during rotation and ensuring the processing quality of the workpiece 5.

As shown in fig. 3-4, the chuck base 3 is provided with a working space 31, the working space 31 is provided with a conical sleeve 32, and the chuck assembly 4 comprises an elastic chuck piece 41, which comprises a plurality of clamping heads 42 abutted with the conical sleeve 32 and a fixed end 45 positioned in the working space 31;

a first elastic member 43 located between adjacent clamping heads 42; and

a jaw assembly 44 located inside the plurality of gripping heads 42.

In the present embodiment, the fixed end 45 is fixedly connected with the rotary oil pull rod 61 of the driving assembly 6, and clamps

The clamping head 42 is fixedly connected with the first elastic member 43, and the clamping head 42 is contracted inwards under the action of the conical surface of the conical sleeve 32 so as to press the first elastic member 43, thereby realizing vertical clamping and increasing the stability during clamping.

As shown in fig. 5, the jaw assembly 44 includes a plurality of jaws 441 disposed inside the plurality of clamping heads 42 and a second resilient member 442 disposed between adjacent jaws 441.

In this embodiment, the clamping jaw assembly 44 is detachably connected with the clamping heads 42, so that the clamping jaw assemblies adapted to the workpieces 5 with different shapes can be conveniently replaced, and when the clamping heads 42 shrink, the clamping jaws 441 are pressed to shrink so as to press the second elastic member 442, thereby realizing vertical clamping of the outer peripheral side of the workpieces.

As shown in fig. 5, a plurality of clamping grooves 443 having different sizes are sequentially formed in the jaw assembly 44.

In this embodiment, the adapted clamping slot 443 can be selected for clamping according to the size of the workpiece.

As shown in fig. 4, a positioning block 46 is disposed on a side of the fixed end 45 adjacent to the jaw assembly 44.

In the present embodiment, the positioning block 46 positions the axial direction of the workpiece 5.

As shown in fig. 6, the elastic clip member 41 has elastic grooves 47 formed uniformly on the outer peripheral side.

In the present embodiment, the provision of the elastic groove 47 increases the elastic limit of contraction between the plurality of clamping jaws 441.

As shown in fig. 7, the clamping jaws 441 are arranged in one-to-one correspondence with the clamping heads 42.

In the present embodiment, the clamping jaw 441 is disposed corresponding to the clamping head 42 to effectively increase the clamping time

The occurrence of stuck conditions is reduced.

As shown in fig. 8, the machine tool spindle 1 and the motor 2 are connected to a conveyor belt 8 through a belt pulley 7, and a tension sleeve 9 is provided between the belt pulley 7 and the spindle 1.

In the embodiment, the belt wheel 7 is tightly tensioned through the tensioning sleeve 9, so that the belt wheel 7 is fixed on the main shaft, and the belt wheel is convenient to detach and improves the inventiveness.

Working procedure

When the clamping device is used, a workpiece 5 is placed in the clamping groove 443, the rotary oil hydraulic cylinder 6 controls the rotary oil pull rod 61 to drive the chuck assembly 4 to move leftwards in the conical sleeve 32, the clamping heads 42 shrink inwards under the action of the conical surface of the conical sleeve 32 to extrude the first elastic member 43, meanwhile, when the clamping heads 42 shrink, the clamping jaw 441 shrinks to extrude the second elastic member 442, the vertical clamping of the outer peripheral side of the workpiece is realized, when the workpiece 5 is released, the rotary oil hydraulic cylinder 6 controls the rotary oil pull rod 61 to move rightwards to drive the chuck assembly 4 to move rightwards in the conical sleeve 32, and accordingly the first elastic member 43 and the second elastic member 442 release elasticity to drive the clamping heads 42 and the clamping jaw 441 to release the workpiece 5.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A high accuracy high efficiency sectional fixture, its characterized in that: the device comprises a machine tool spindle, a motor for driving the machine tool spindle to rotate, and a chuck seat which rotates synchronously with the machine tool spindle;

a chuck assembly rotating synchronously with the chuck base; and

driving the chuck assembly to axially move along the machine tool spindle so as to match the chuck assembly with the chuck base

A driving assembly for clamping the workpiece;

a working space is formed in the chuck base, a conical sleeve is arranged in the working space, and the chuck assembly comprises an elastic chuck piece, a plurality of clamping heads and fixed ends, wherein the clamping heads are in butt joint with the conical sleeve, and the fixed ends are positioned in the working space;

a first elastic member positioned between adjacent ones of the clamping heads; and

a jaw assembly located inside a plurality of said gripping heads.

2. The high precision and high efficiency composite clamp according to claim 1, wherein said jaw assembly comprises a plurality of jaws disposed inside a plurality of said clamping heads and a second resilient member disposed between adjacent ones of said jaws.

3. A high-precision and high-efficiency combined clamp according to any one of claims 1-2, characterized in that,

a plurality of clamping grooves with different sizes are sequentially formed in the clamping jaw assembly.

4. The high-precision and high-efficiency combined clamp according to claim 1, wherein a positioning block is arranged on one side of the fixed end, which is close to the clamping jaw assembly.

5. The high-precision and high-efficiency combined clamp according to claim 1, wherein elastic grooves are uniformly formed in the outer peripheral side of the elastic chuck piece.

6. A high precision and high efficiency composite clamp according to any one of claims 1-2, wherein said clamping jaws are arranged in a one-to-one correspondence with said clamping heads.

7. The high-precision and high-efficiency combined clamp according to claim 1, wherein the machine tool spindle is connected with the motor through a belt wheel and a conveyor belt, and the belt wheel is connected with the spindle through a tensioning sleeve.