CN2350157Y

CN2350157Y - Flexible chuck

Info

Publication number: CN2350157Y
Application number: CN 98218877
Authority: CN
Inventors: 刘良生
Original assignee: BEIJING MACHINE TOOL ACCESSORY FACTORY
Current assignee: BEIJING MACHINE TOOL ACCESSORY FACTORY
Priority date: 1998-09-03
Filing date: 1998-09-03
Publication date: 1999-11-24
Anticipated expiration: 2008-09-03

Abstract

The utility model relates to a flexible clamp which is used for clamping a rotary tool in the mechanical process, composed of a clamp shaft rod (1), a flexible clamp head (2) and a nut (3). In the structure of the flexible clamp head, six steel claws (5) are uniformly arranged and are combined with a rubber body (6) to form a round platform-shaped integral body. Compared with the existing clamp, wherein, a discrete steel claw of which uses an O-shaped rubber ring to form an elastic clamp head, the utility model has the advantages of convenient use, high precision, stable clamp, etc.

Description

A kind of flexible fixture

The utility model belongs to the anchor clamps field of machining, is mainly used in the clamping of rotation process tool.

The existing spring chuck that is used to rotate the process tool clamping is made up of anchor clamps axostylus axostyle, collet and nut three parts, and independently steel pawl and an O shape rubber ring combine its living chuck of being hit by a bullet separately by three.There are anchor clamps in the box-like collet of this discrete groups and use inconvenient, shortcomings such as accuracy is poor, clamping steadiness difference.Particularly three steel pawls can't be done whole correct grinding processing after quenching distortion, and the uniformity of size and shape is poor.

The design's purpose is by changing the box-like collet of discrete groups into the monoblock type flexible chuck, and a kind of novel flexible anchor clamps are provided, and solves low precision, the gripping performance difference that existing spring chuck invar pawl discrete topology brings and uses problem such as inconvenience.

The flexible fixture that the utility model provides is made up of nut three parts of anchor clamps axostylus axostyle, chuck, and wherein chuck is one flexible whole, and this flexible body is to be combined with rubber bodies by 6 evenly distributed trapezoidal steel pawls that to form the centre be the truncated cone-shaped integral body of round straight hole.

During the clamping cutter, flexible chuck is placed the conical socket (the same chuck of tapering) of anchor clamps axostylus axostyle front end, the round shank of cutter is inserted in the cover top nut, and last fastening nut utilizes screwing force to compress flexible chuck and produces radially clamping force to handle of a knife.

The thickness of steel pawl can be the 1-3 millimeter, and a circular hole or groove are at least arranged above the every steel pawl, so that rubber bodies becomes the integral body of not cut off by the steel pawl, improves the firmness of flexible chuck.

The tapering of flexible chuck is about 40 °, and the inboard clamping face and the opposite external side of each steel pawl can be circular arc.It is firm so more to help clamping.

Below in conjunction with the novel embodiment of this reality of description of drawings:

Fig. 1 is the installation diagram (analysing and observe) of anchor clamps, and 1 is the anchor clamps axostylus axostyle, and 2 is chuck, and 3 is nut, and 4 is the cutter that is held.

Fig. 2 is the flexible chuck view.

Fig. 3 is the collet view of prior art.

In Fig. 2, the truncated cone-shaped integral body that it is round straight hole that 6 evenly distributed steel pawls 5 and rubber bodies 6 are combined into a centre, the whole tapering of round platform is 40 ° (one-sided with axis angle are 20 °).Steel pawl thickness 1.5-2mm has a circular hole above, so that rubber bodies runs through into an integral body.The maximum outside diameter D of three kinds of size flexible chucks that provided is respectively Φ 15.5mm, Φ 21mm and Φ 26.5mm; 2 kinds of endoporus apertures are arranged under the same external diameter, and they are Φ 4.5mm Φ 6.5mm, Φ 7mm and Φ 10mm and Φ 9mm and Φ 14mm successively; The corresponding clamping range of each endoporus aperture d, they are followed successively by: Φ 2.5-4.5mm, Φ 4.5-6.5mm, Φ 4-7mm, Φ 7-10mm, Φ 5.36-9mm and Φ 10.38-14mm.

In the prior art shown in Figure 3,7 is the steel pawl, and 8 is O shape rubber ring, and this circle is linked to be the collet of an activity with three steel pawls, and three steel pawls are the 120 ° of arrangements of being separated by.

The utility model with the anchor clamps of the existing box-like collet of discrete groups compare have easy-to-use, precision is high, clamping The firm outstanding advantages that waits.

Claims

1, a kind of flexible fixture, form by anchor clamps axostylus axostyle (1), chuck (2) and nut (3), it is characterized by: chuck (2) is a flexible integral body, and this flexible body is to be combined with rubber bodies (6) by evenly distributed 6 trapezoidal steel pawls (5) to form the middle truncated cone-shaped integral body of round straight hole that is; The whole tapering of round platform is 40 ° (one-sided and axis angle is 20 °), and maximum outside diameter D is respectively Φ 15.5mm, Φ 21mm and Φ 26.5mm; 2 kinds of endoporus apertures are arranged under the same external diameter, and they are Φ 4.5mm and Φ 6.5mm, Φ 7mm and Φ 10mm and Φ 9mm and Φ 14mm successively.

2, a kind of flexible fixture as claimed in claim 1, the thickness that it is characterized by described steel pawl is the 1-3 millimeter, has at least one circular hole or groove on it.