A special fixture for cylindrical processing of long cylindrical parts

Abstract

The invention relates to a machining fixture, which discloses a special fixture for the outer circle processing of long cylindrical parts. The two ends of the mandrel are symmetrically installed with guide sleeves, taper sleeves and lock nuts from the inside to the outside. The guide sleeves are large and small. The small end of the guide sleeve is fixed on the mandrel by a set screw, the sleeve at the large end of the guide sleeve is provided with a through hole, and the top block is placed in the through hole; the outer end of the top block is an arc surface and a groove is set, and the inner end A conical surface is provided, and the cone of the taper sleeve abuts on the conical surface of the top block; an annular spring is installed in the groove around the top block. On the basis of axial clamping, the present invention increases the top block to radially clamp the workpiece, the outer circle of the workpiece will not move radially, and the centering accuracy is high; the matching design of the guide sleeve and the taper sleeve and the added shaft sleeve can facilitate The centering clamping is adjusted according to the length and inner hole of the long tube parts, which improves the versatility of the long tube part outer circle processing fixture.

Description

technical field [0001] The invention relates to a machining fixture, in particular to a special fixture for machining the outer circle of long cylinder parts. Background technique [0002] Cylindrical grinding and turning of long cylindrical parts usually use the mandrel + support ring to position and clamp the inner hole. The clamping structure of the mandrel + support ring used in the past is mostly one-to-one fixed: that is, long cylindrical parts with one length specification and inner hole can only be configured with one mandrel + support ring fixture according to the part design. Cylindrical grinding and turning of long cylindrical parts with different lengths and inner holes requires different corresponding mandrel + support ring fixtures, which makes an enterprise need to configure a lot of mandrel + support ring fixtures, which are large in number and inconvenient to manage , increased fixtures, high processing costs. Simultaneously, in order to assemble and disas...

AI Technical Summary

Problems solved by technology

Another way of positioning and clamping is to use tapered sleeves for positioning and clamping at the two ports of the inner circle of long cylindrical parts. This positioning and clamping method will affect the quality of parts processing due to the accuracy of the contact between the two ports. Therefore, the above Two ways, even if the hole of the same size is affected by the size tolerance, it is difficult to control the machining accuracy

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