Self-centering self-locking chuck of grinding machine

Abstract

The invention belongs to the technical field of machinery, and particularly relates to a self-centering self-locking chuck of a grinding machine. The self-centering self-locking chuck of the grinding machine comprises an outer shell and an ejector pin, wherein the outer shell is provided with a cavity; the ejector pin penetrates in the outer shell; an inner shell is inserted in the outer shell; the outer shell and the inner shell can rotate freely; an annular boss is arranged on the upper end surface of the inner shell; three cores for clamping a workpiece are uniformly arranged on the upper circumference of the upper end surface of the annular boss; heads of the cores are hinged to the annular boss; a preloaded spring is arranged at the tail of each core; a shaft sleeve which is connected with the ejector pin in a sleeving manner is arranged in the inner shell; and the shaft sleeve freely rotates in the same direction only relative to the inner shell. The self-centering self-locking chuck of the grinding machine is simple in structure.

Description

technical field [0001] The invention belongs to the technical field of machinery, and specifically refers to a self-centering and self-locking chuck of a grinding machine. Background technique [0002] Cylindrical grinder is a kind of grinding machine mainly used for grinding cylindrical and conical outer surfaces. When working, the power source is started, and the grinding wheel located at one end of the horizontal slide table of the fuselage rotates and feeds, and at the same time, the grinding wheel located at the other end The workpiece starts to rotate under the drive of another power source, so that the grinding wheel performs plunge grinding on the workpiece. [0003] Existing cylindrical grinders usually use a chicken core chuck with a power clamping mechanism and a loosening mechanism. When grinding bar materials, the elastic screws of the chuck are usually used to fix the workpiece. After the workpiece is clamped by the two tops, the grinding machine When the grin...

AI Technical Summary

Problems solved by technology

This type of chicken core chuck not only has a complex internal structure, but also requires manual loading and unloading for assembly, which is time-consuming and laborious. At the same time, when fixing the workpiece, the chuck screw must be tightened outside the machine tool, which greatly increases the labor intensity of the workers and reduces the production efficiency. Very low, increases production cost

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