Flexible four-jaw chuck

A four-jaw chuck and chuck technology, which is applied in chucks, turning equipment, tool holder accessories, etc., can solve problems such as insufficient clamping force, reduced machining accuracy, and damaged workpieces, and achieves convenient operation and clamping, Improve machining accuracy and save material

A four-jaw chuck and chuck technology, which is applied in chucks, turning equipment, tool holder accessories, etc., can solve problems such as insufficient clamping force, reduced machining accuracy, and damaged workpieces, and achieves convenient operation and clamping, Improve machining accuracy and save material

CN103394722AInactive Publication Date: 2013-11-20SOUTH CHINA UNIV OF TECH
5 Cites 18 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flexible four-jaw chuck
  • Flexible four-jaw chuck
  • Flexible four-jaw chuck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 and Figure 4 Shown, a kind of flexible four-jaw chuck comprises chuck body 4, the large cone chuck 3 and bevel gear 2 with helix in chuck body 4, four can be driven by the helix of large cone chuck 3 The linkage lower jaw 5 that moves back and forth radially along the chuck body 4, and the base end cover 1 arranged at the bottom of the chuck body 4, the upper part of the chuck body 4 is fixedly provided with four identical circles by cross-recessed screws 15. The quincunx bracket 6 composed of arcs is also fixed with a quincunx ring 7 that is consistent with the outer contour shape of the quincunx bracket 6;

[0020] A middle piece 12 is articulated on the linked lower jaws 5, and the bottom of the middle piece 12 is extended downward with a pin 20 extending into the linked lower jaw 5. The upper part of the middle p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flexible four-jaw chuck, and particularly relates to a flexible four-jaw chuck used for clamping irregular workpieces. On the basis of an original self-centering four-jaw chuck, four medium blocks embedded with upper single-acting jaws are added, are connected with lower linkage jaws in a hinged manner, can rotate freely and are independent modules, and a T-shaped worm gear is arranged on each medium block and matched with the same in a sliding pair mode. Each medium block turns to be locked at a constant angle in a mode that a worm drives the T-shaped worm gear, and meanwhile, the upper single-acting jaw embedded on the upper face of each medium block can move frontwards and backwards through rotation of a lead screw and is locked automatically by the aid of a self-locking function of the lead screw. The flexible four-jaw chuck can clamp regular or irregular workpieces by the aid of the rotatable medium blocks, a use range of the chuck is enlarged, and clamping safety, stability and processing accuracy of the workpieces are improved.

Description

[0001] technical field [0002] The invention relates to a machined workpiece chuck, in particular to a flexible four-jaw chuck capable of clamping irregular workpieces or rotating bodies. Background technique [0003] General-purpose fixtures mainly include vices, three-jaw chucks, four-jaw chucks, etc., which are mainly used for clamping and fixing workpieces (or blanks) with regular shapes, but for some workpieces with irregular or complex shapes (or blank), it is obviously impossible to achieve reasonable clamping with the above three fixtures. However, unreasonable clamping often reduces the machining accuracy, damages the workpiece (or blank), and eventually causes a large error in the size of the workpiece. Sometimes even the processing process is full of danger due to insufficient clamping force. Not only that, general fixtures often need to be disassembled repeatedly to clamp regular workpieces (or blanks) of different shapes, and the process is cumbersome. Cont...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
20 Nov 2013
Publication
CN103394722A
IPC
B23B31/16; B23B31/169
Inventors
张志宏; 詹俊赋