An automatic tapping machine

Abstract

The invention relates to a tapping machine for machining internal threads. The tapping machine comprises a rack and a hopper mechanism and is characterized in that a spindle feeding mechanism, a tapping mechanism and a material pushing mechanism are mounted on the rack; the hopper mechanism is arranged at the top of the tapping mechanism; a spindle box is fixed on the rack between the spindle feeding mechanism and the tapping mechanism and used for providing power for a straight shank tap during tapping. The automatic tapping machine can be directly used for continuously machining the internal threads in workpieces such as nuts and the like through the straight shank tap without a long shank or welding of a bent shank, the defects that a motor is prone to damage due to frequent forward and reverse rotation of the motor and labor-hour expenses and costs of a tap are increased due to use of the bent shank where the tap is welded in the prior art are overcome, the quality of nuts is greatly improved, and the yield of the nuts is greatly increased.

Description

technical field [0001] The invention relates to a special equipment for tapping, in particular to a tapping machine for continuously internally threading workpieces such as nuts by directly using straight shank taps. Background technique [0002] In the processing of mechanical parts such as nuts, it is often necessary to make internal threads (tapping). At present, there are no more than two types of tapping machines: 1. Use straight shank taps, and the taps are installed in the chuck of the main shaft. When working, first clamp the parts to be processed, then start the motor to drive the chuck to rotate, and then drive the tap to rotate and cut in by controlling the axial movement of the spindle, and process the internal thread. When the tap reaches the predetermined depth, the motor reverses immediately, and the tap It also reverses and withdraws from the processed parts to complete a single-pass tapping. 2. Bending shank taps are usually used on horizontal tapping machi...

AI Technical Summary

Problems solved by technology

However, when the tap is welded with a bent shank, the man-hour cost and the cost of the tap are increased; when the tap is lengthened, the rigidity becomes worse, and the quality of the processed product decreases; on the other hand, when the processed part is long, the part cannot pass through the bent shank tap The bending part, which limits the processing range

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