Expansion clamping device

Abstract

The invention provides an expansion clamping device which comprises an expansion sleeve and a chuck connected to one end of the expansion sleeve, wherein a plurality of expansion gaps are axially formed in the expansion sleeve; a core rod is mounted in the expansion sleeve; the side surface of the core rod is conical; the inner wall of the expansion sleeve is a conical surface matched with the core rod; the small-diameter end of the core rod faces to the chuck; a bolt penetrates through the chuck to be in threaded connection with the small-diameter end of the core rod to tightly pull the core rod and the expansion sleeve; chuck teeth are arranged on the chuck. According to the expansion clamping device, a bottom barrel can be quickly tightened by expansion and dismounted, and the chuck is matched with a processing tool of the bottom barrel through the chuck teeth, so that the bottom barrel can be firmly fixed and prevented from rotating during processing; an expansion mechanism is convenient to mount and dismount, the bottom barrel cannot be damaged, and the clamping efficiency is high.

Description

technical field [0001] The invention relates to the technical field of fixtures, in particular to an expansion clamping device. Background technique [0002] When the bottom cylinder of the shock absorber is processed in the machining center, the bottom cylinder needs to be clamped and fixed. It is required that the center of the two ends of the bottom cylinder be clamped stably and the positioning is accurate. After clamping, the bottom cylinder cannot rotate. The original shock absorber bottom cylinder machining center fixture It is a threaded screw-in type. By manually rotating the threaded handle, the end plate is pushed forward to tighten the workpiece. The clamping efficiency is low, the reliability of the fixture is low, the operation is labor-intensive, and the production efficiency can no longer meet the needs of mass production. Moreover, the existing The tooling used for clamping the bottom cylinder has a complex structure and is inconvenient to operate. It cannot...

AI Technical Summary

Problems solved by technology

[0002] When the bottom cylinder of the shock absorber is processed in the machining center, the bottom cylinder needs to be clamped and fixed. It is required that the center of the two ends of the bottom cylinder be clamped stably and the positioning is accurate. After clamping, the bottom cylinder cannot rotate. The original shock absorber bottom cylinder machining center fixture It is a threaded screw-in type. By manually rotating the threaded handle, the end plate is pushed forward to tighten the workpiece. The clamping efficiency is low, the reliability of the fixture is low, the operation is labor-intensive, and the production efficiency can no longer meet the needs of mass production. Moreover, the existing The tooling used for the clamping of the bottom cylinder has a complicated structure and is inconvenient to operate. It cannot be positioned and clamped well, and it is easy to rotate when the bottom cylinder is processed.

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