Automatic tapping machine having both self-adaptive tapping function and synchronous tapping function

Abstract

The invention relates to the field of machining equipment, in particular to an automatic tapping machine having both a self-adaptive tapping function and a synchronous tapping function. The automatictapping machine comprises a motor assembly, a screw-nut transmission mechanism, a travel switch assembly, a screw pitch adaption spring, a switching device and an air cylinder device; the motor assembly comprises a shell, a stator, a rotor iron core and a motor spindle; the motor spindle is composed of a shaft sleeve body and an inner shaft, and the lower end of the inner shaft is provided with aconnection part for installing a screw tap or a screw die; the screw-nut transmission mechanism comprises a main screw, a main nut, a guide rod, a main nut installation seat, a lower fixing plate andan upper fixing plate; and the switching device comprises an output gear, an input gap bridge spool gear, a reduction gear set and an adjustable gear supporting seat and further comprises a position fixing device and a limiting device. The automatic tapping machine can be suitable for tapping of different screw pitches and is wide in application range, the tapping precision can be improved, the tapping failure, screw tap breaking and other problems can be solved, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of machining equipment, in particular to an automatic tapping machine with both self-adaptive tapping and synchronous tapping. Background technique [0002] The invention patent with application number 201610764734.6 discloses an automatic tapping machine that uses the elastic inner shaft of the motor to adapt to tapping with different pitches. The tapping machine can use the elastic inner shaft to perform self-adaptive tapping. adapt. However, when this structure taps threads with small pitches (such as 0.2, 0.25, 0.35, 0.4, 0.5, etc.), because the difference between the advancing speed of the main screw and the advancing speed of the tap is too large, the pitch adaptation spring is too tight. It is easy to cause low tapping precision, and even problems such as rotten teeth and broken taps, which will cause losses to the enterprise and increase manufacturing costs. Contents of the invention [0003] The object of...

AI Technical Summary

Problems solved by technology

However, when this structure taps threads with small pitches (such as 0.2, 0.25, 0.35, 0.4, 0.5, etc.), because the difference between the advancing speed of the main screw and the advancing speed of the tap is too large, the pitch adaptation spring is too tight. It is easy to cause low tapping precision, even rotten teeth, broken taps and other problems, which will cause losses to the enterprise and increase manufacturing costs

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