Workpiece ejecting mechanism

Abstract

The invention discloses a workpiece ejecting mechanism. The workpiece ejecting mechanism comprises a connecting pack, a mounting base, a connecting sleeve, a tooth surface poking disc, a first tip and a second tip; the connecting pack is fixed on a machine tool main shaft; the mounting base is fixed at the front end of the connecting pack; the first tip is fixed at the middle part of the front end of the mounting base; the tooth surface poking disc is sleeved on the outer side of the first tip; the sharp end of the first tip extends out from the front end of the tooth surface poking disc; the tooth surface poking disc is fixed on the mounting base, and is ejected by an elastic ejecting unit; the connecting sleeve is sleeved on the outer side of the tooth surface poking disc, and is fixed on the mounting base; the sharp end of the second tip is aligned to the sharp end of the first tip; the second tip and the first tip are coaxially arranged; the second tip is mounted on a hydraulic tail base sleeve; and the hydraulic tail base sleeve is connected with a machine tool feeding unit. The workpiece ejecting mechanism is simple in structure and low in cost; and the tooth surface poking disc can achieve the effects of end surface driving and jump relief, so that the workpiece machining precision is improved and guaranteed.

Description

technical field [0001] The invention relates to a jacking mechanism, in particular to a workpiece jacking mechanism. Background technique [0002] In lathe processing, it is necessary to use the jacking mechanism to tighten the workpiece, and complete the machining by tightening the workpiece through the top. There are usually two types of existing workpiece clamping mechanisms. One is the top-fixed clamping mechanism. When the centerline of the workpiece is inconsistent with the centerline of the tip or the center of gravity of the workpiece is eccentric, the concentricity between the tip and the workpiece cannot be adjusted due to the fixed tip. , the top will inevitably jump, which will affect the machining accuracy of the workpiece. In addition, this kind of jacking mechanism is usually driven by hydraulic pressure, with a complex structure and high cost; the other is an elastic top, which has a large range of jumps, resulting in insufficient precision of the workpiece a...

AI Technical Summary

Problems solved by technology

The clamping device makes use of the elasticity of the compression spring to make the front tip axially expand and contract, and always cooperate with the center hole of the workpiece positioning reference end to play a centering role. The other end of the workpiece is supported by the rear tip, so that the front tip is compressed to the workpiece positioning reference The end face is in contact with the limit block, and the three-jaw chuck is locked. Although it can ensure that the length dimension of the workpiece and the center of the workpiece are on the same horizontal line, there is also the problem of insufficient machining accuracy of the workpiece caused by the jumping of the top.

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