Automatic tapping machine power head capable of fast feed and fast return

Abstract

An automatic tapping machine power head capable of fast feed and fast return comprises a main shaft box and a main shaft disposed in the main shaft box. The main shaft comprises an outer spline shaft and an inner spline shaft, wherein the head of the outer spline shaft extends into the tail of the inner spline shaft, and the inner spline shaft and the outer spline shaft are connected through an inner spline and an outer spline between the shafts. A guide shaft is sleeved outside the outer spline shaft, the inner spline shaft is connected into the head of the guide shaft through a bearing, a piston is installed in the middle of the outer side of the guide shaft, the piston completely isolates a sealed cavity axially formed on the main shaft box into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are respectively connected with an air source through respective air channels. A limit support is connected with the upper portion of the outer side of the guide shaft, the limit support can be connected with a main shaft tapping feed mechanism in a clamping mode, and a movement gap slightly smaller than the idle stroke of the tapping machine is reserved at the position of the clamping connection between the limit support and the main shaft tapping feed mechanism. The automatic tapping machine power head capable of fast feed and fast return is capable of achieving fast feed and fast return of the power head in the idle stroke, and the tapping efficiency of the tapping machine can be greatly improved.

Description

technical field [0001] The invention relates to a desktop automatic tapping machine, in particular to an automatic tapping machine power head capable of fast forward and fast rewind. Background technique [0002] The power head of the existing tapping machine is generally all lead screw type structure, such as the publication number is CN201940711U, the patent name is a kind of lead screw type automatic attack machine, its structure includes a spindle box, is provided with a spindle box for tapping The main shaft is used, the tail of the main shaft is connected with a lead screw, and the lead screw is engaged with the nut fixed on the headstock. When working, the rotation of the main shaft drives the lead screw at the tail to rotate synchronously, because the pitch of the nut is set in advance. , the lead screw will move axially on the nut with a fixed pitch T while it is rotating, and then drive the main shaft fixedly connected with the lead screw to move up with a fixed pi...

AI Technical Summary

Problems solved by technology

However, the existing lead screw-type axial movement method makes the axial movement of the spindle move at the same speed as the tapping process during the entire feeding and retracting reset process, which greatly limits the tapping of the tapping machine. wire efficiency, unable to meet the needs of actual processing

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