Screw tap for thread cutting of metal workpiece

Abstract

The invention discloses a screw tap for thread cutting of a metal workpiece, which comprises a screw tap body and a positioning mechanism, the positioning mechanism is arranged at one end of the screw tap body, the positioning mechanism comprises a plurality of movable blocks and an adjusting mechanism, the adjusting mechanism comprises a movable rod, a through hole is formed in the middle of the screw tap body, and one end of the screw tap body is fixedly connected with a mounting base; a plurality of mounting grooves are formed in the mounting base at equal intervals, inner cavities of the mounting grooves are slidably connected with the movable blocks in a penetrating mode, and one ends of the movable rods are fixedly connected with fixed blocks in a penetrating mode. The movable rod is rotated, so that the movable rod moves in an inner cavity of the through hole, the movable rod is made to horizontally move in the inner cavity of the through hole through cooperation of the movable rod and a threaded hole, a fixed block is driven to move together, one end of the movable block is extruded, the position of the movable block is adjusted, and the other end of the movable block extrudes the inner wall of a to-be-machined hole, so that the screw tap and the to-be-machined hole are located at the same axis position, and stable tapping of the screw tap is guaranteed.

Description

technical field [0001] The invention relates to the technical field of tap tools, in particular to a tap used for thread cutting of metal workpieces. Background technique [0002] A tap is a tool for processing internal threads. According to its shape, it can be divided into spiral flute taps, edge angle taps, straight flute taps, and pipe thread taps. According to the use environment, it can be divided into hand taps and machine taps. The common taps are The working part is composed of a shank, and the working part is divided into a cutting part and a calibration part. The former is ground with a cutting cone, which is responsible for cutting work, and the latter is used to calibrate the size and shape of the thread. The tap is used by the manufacturing operator when tapping. The most mainstream processing tool. [0003] When using a hand tap to tap the round hole of the workpiece, usually one end of the tap is aligned with the top of the hole, and the top of the tap is cl...

AI Technical Summary

Problems solved by technology

[0003] When using a hand tap to tap a round hole in a workpiece, usually one end of the tap is aligned with the top of the hole, and the tap is tapped with a clamping tool. The top of the hole is clamped and fixed. By rotating and pressing the clamping tool, the tap is driven to rotate together, so that the tap is threaded at the position of the hole, and the inner wall of the hole is processed. When the tap is working, it is necessary to keep the tap vertical. setting, and the axis of the tap is on the same line as the center of the hole. When tapping manually, the worker usually moves the tap manually so that one end of the tap is aligned with the hole. The operation is difficult, and when tapping When threading, the tap is prone to deviation, resulting in deviation of tapping

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