Clamping structure of numerical control machine tool

Abstract

The utility model provides a clamping structure of a numerical control machine tool, which relates to the technical field of metal processing and comprises a machine tool output shaft and a fixing seat. A set of linkage pieces are slidably installed on the top of the machine tool output shaft, spline shafts on the tops of the linkage pieces are installed in connecting key grooves formed in the bottom of the clamping chuck in an inserted mode, and safety blocks are installed in annular grooves of the linkage pieces in an inserted mode. The clamping chucks and the output shaft of the machine tool can be conveniently and rapidly connected, accidental separation between the clamping chucks and the output shaft of the machine tool can be avoided through the safety blocks, the safety of the device is improved, the device can exchange the machining position and the to-be-machined position of the two sets of clamping chucks, the machining efficiency of the device is effectively improved, and the machining cost is reduced. And through the positioning rod, the positioning effect of the device for clamping the chuck for replacement is effectively improved.

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