CN201012470Y

CN201012470Y - Improved 4-claw self-centering chuck

Info

Publication number: CN201012470Y
Application number: CNU2007200356990U
Authority: CN
Inventors: 刘世德; 韩新强; 王玉正; 王猛; 许峰; 查文杰; 张小金; 钱尧生
Original assignee: JIANGSU WUXI JIANHUA MACHINE PLANT
Current assignee: JIANGSU WUXI JIANHUA MACHINE PLANT
Priority date: 2007-03-28
Filing date: 2007-03-28
Publication date: 2008-01-30
Anticipated expiration: 2017-03-28

Abstract

The utility model is an improved four-claw and self-centering chuck. A workpiece can be clamped and disassembled from the face of a chuck body. With convenient operation, the utility model is applicable to machine tools with various structures and forms. The chuck includes the chuck body, four claws, and a chuck wire. The chuck wire is installed inside the chuck body. The four claws are respectively installed at a slide groove of the chuck body and respectively mesh the chuck wire. The chuck wire meshes a gear, which is enchased at the chuck body. The utility model is characterized in that the gear is spur gear, and a central adjusting hole of the spur gear is placed at the face of the chuck body.

Description

A kind of four paws self-centering chuck of improvement

(1) technical field

The utility model relates to grinding machine chuck class frock technical field, is specially a kind of four paws self-centering chuck of improvement.

(2) background technology

Existing four paws self-centering chuck structure is seen Fig. 1, Fig. 2, during clamping workpiece, by spanner rotation conic gear 3, is driven parcels 4 and then is driven four claws 1 by angular wheel 3 and move clamping and the dismounting of realization to workpiece, and 2 is disk body.This centering chuck adopts parcel 4, angular wheel 3 kinds of drive, and the adjustment hole of angular wheel 3 can only so clamping workpiece will use spanner from the side of chuck, be not easy to operation in the side of chuck on drilling machine, slotting machine, is fit to the narrow range of using.

(3) summary of the invention

At the problems referred to above, the utility model provides a kind of four paws self-centering chuck of improvement, can be at the front of disk body clamping, dismounting workpiece, and easy to operate, the lathe that is fit to multiple version uses.

Its technical scheme is such: it comprises disk body, four claws, parcel, described parcel is installed in the described disk body, described four claws are installed on the chute of described disk body respectively and mesh with described parcel respectively, described parcel and the gears engaged that is embedded in described disk body, it is characterized in that: described gear is a spur gear, and the center adjustment hole of described spur gear is positioned at the front of described disk body.

It is further characterized in that: described disk body is square disk body, is respectively arranged with U-lag in the two sides of described square disk body.

Adopt the type of belt drive of spur gear and parcel in the said structure of the present utility model, and the center adjustment hole of spur gear is positioned at the front of described disk body, install, dismantle workpiece so conveniently, the scope that is fit to use is wide, and the U-lag of disk body side makes things convenient for installation, the dismounting of chuck on workbench, has further guaranteed the use field that chuck is wider, thereby has avoided existing structure, clamping, dismounting workpiece use spanner, unhandy shortcoming from the side.

(4) description of drawings

Fig. 1 is the front view of existing four paws self-centering chuck;

Fig. 2 is that the A-A of Fig. 1 is to revolved sectional view;

Fig. 3 is a front view of the present utility model;

Fig. 4 is that the B-B of Fig. 3 is to cutaway view;

Fig. 5 is that the C-C of Fig. 3 is to cutaway view.

(5) specific embodiment

See Fig. 3, Fig. 4, Fig. 5, the utility model comprises disk body 2, claw 1, parcel 6, totally four of claws 1, parcel 6 is installed in the disk body 2, claw 1 is installed on the chute of disk body 2 respectively and meshes with parcel 6 respectively, parcel 6 and gear 4 engagements of insert in disk body 2, gear 4 is a spur gear, the rotation adjustment hole 5 of spur gear 4 is positioned at the front of disk body 2.Disk body 2 is square disk body, and being respectively arranged with

U-lag

3,7 in the two sides of square disk body 2 is gland.

Describe the course of work of the present utility model below in conjunction with accompanying drawing: square hole 5 is regulated in the rotation of during holding workpiece spanner being inserted gear 4 ends, drives parcel 6 rotations, and parcel 6 drives claw 1 clamping work pieces, spanner reverse rotation when unclamping workpiece.

The edge of disk body 2 is provided with U-lag, utilizes sunk screw can be installed on workbench, and is simple, convenient.

Claims

1. the four paws self-centering chuck of an improvement, it comprises disk body, four claws, parcel, described parcel is installed in the described disk body, described four claws are installed on the chute of described disk body respectively and mesh with described parcel respectively, described parcel and the gears engaged that is embedded in described disk body, it is characterized in that: described gear is a spur gear, and the center adjustment hole of described spur gear is positioned at the front of described disk body.

2. according to the four paws self-centering chuck of the described a kind of improvement of claim 1, it is characterized in that: described disk body is square disk body, is respectively arranged with U-lag in the two sides of described square disk body.