Gear shifting type constant torque tapping mechanism

Abstract

The invention provides a gear shifting type constant torque tapping mechanism, which comprises a machine frame, wherein the lower part of the machine frame is connected with a base; the inside of themachine frame is provided with a main shaft driven by a handle; the lower part of the main shaft is provided with a drill chuck; and the inside of the drill chuck is provided with a screw tap. The gear shifting type constant torque tapping mechanism is characterized in that: the machine frame comprises a vertical slide plate pair which fixes the main shaft by a pull rod; the main shaft comprises an upper main shaft and a lower main shaft which are movably connected; the handle is connected with the upper main shaft; a shell is arranged between the middle part of the upper main shaft and the middle part of the lower main shaft by an upper cover plate and a lower cover plate; the outside of the upper main shaft is provided with a friction moving plate which is contacted with a friction static plate by a friction connecting plate; the friction static plate drives the shell by a torsional gear shifting lock, the shell drives the lower main shaft, and the drill chuck is connected with the lower main shaft; the lower main shaft is provided with a central hole and an adjusting cavity which are communicated, and the inside of the central hole is provided with an adjusting bolt B of which the lower part is provided with a nut in the adjusting cavity; and a spring support is arranged outside of the lower main shaft and provided with a pre-pressing spring contacted with the friction moving plate.

Description

technical field [0001] The invention relates to a tapping machine, in particular to a shifting type constant torque tapping mechanism, which belongs to the field of machine tools. Background technique [0002] Mechanical parts are usually fixed by threaded connections, and the threads are often tapped by tapping machines. The existing tapping technology is to manually tap the workpiece on the tapping machine, but it has the following disadvantages: first, the tapping machine is difficult to position and process due to factors such as different sizes and angles of the workpiece; , manual tapping due to the different quality of workers leads to quality differences and broken taps, etc., the efficiency is low, and the quality of the workpiece is poor; third, in order to perform effective and fast tapping, the tap head is generally lubricated before tapping Oil, prior art is before tapping, after dipping oil to tap by hand, taps again, and labor intensity is big, and efficient ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a flexible vertical tapping on different stations, reasonable structure, safe and reliable operation, high efficiency, low labor intensity, and avoid broken taps, disorderly Shift-type constant torque tapping mechanism for problems such as threads

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