Novel rectangular flexible four-jaw chuck

Abstract

The invention discloses a novel rectangular flexible four-jaw chuck. The four-jaw chuck comprises a rectangular chuck body, four linkage jaws, four middle steering blocks, four screws and four sliding jaws, wherein the rectangular chuck body is fixedly arranged on a base, the four linkage jaws are distributed on the chuck body by forming a 90-degree angle and are driven by a scroll, the middle steering blocks are movably arranged on the linkage jaws, the sliding jaws are matched with the screw, the screws are arranged in arc grooves at the upper ends of the middle steering blocks, retaining collars fixed on the middle steering blocks limit axial motion of the screws, gear teeth are arranged at the outer edge of the scroll, and a small serrated shaft in driving mesh with the gear teeth is perpendicularly arranged on the chuck body. By adjusting the serrated shaft to realize linkage, the novel rectangular flexible four-jaw chuck is more convenient to operate, the integral height of the chuck is reduced, available height of a Z-axis of a machine tool is increased, and the chuck is higher in practicality. Meanwhile, the chuck enhances reliability in clamping irregular larger workpieces through the additional jaws, and application range thereof is enlarged.

Description

technical field [0001] The invention relates to a machining workpiece chuck, in particular to a novel rectangular flexible four-jaw chuck capable of clamping irregular workpieces. Background technique [0002] 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. [0003] The flexible four-jaw chuck in the prior art integrates the functions of vise, three-jaw chuck, self-aligning four-jaw chuck and other fixtures. It can not only clamp regular workpieces, but also rotate the jaws by turning to the middle block. Any angle can realize the clamping of all irregular workpieces. At the same time, the fixture can also use the linkage function to simplify the operations required for workpiece clamping a...

AI Technical Summary

Problems solved by technology

However, the structure of the flexible four-jaw chuck is not compact enough, and the overall height is relatively high, which reduces the available height of the Z-axis of the machine tool

At the same time, when the chuck uses the linkage function, it is necessary to adjust the four small bevel gears located around the chuck body, which is cumbersome and inconvenient to operate

In addition, although workpieces with large irregularities can be clamped, the reliability is not high.

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