Processing method of hole extruded rod

Abstract

The invention relates to a machining method of a hole extrusion bar. The method includes the following steps of (1) material preparation; (2) machining in a lathe work procedure; (3) a heat treatment work procedure; (4) surface flange treatment after a sand blasting work procedure; (5) abutting against center holes at two ends of the extrusion bar with two centers by a fitter to remove impurities left in the center holes after the heat treatment; (6) an outward grinding work procedure, wherein the diameter d2 of a front guide is ground through a plain grinding wheel, grinding quantities of 0.04mm-0.06mm are reserved, and a work table face d1 is ground to meet a size requirement; (7) cutting a forming grinding wheel; (8) grinding a front conical surface, a back conical surface, and a small part of a front guide face with the forming grinding wheel, and grinding the diameter d2 of the front guide with the plain grinding wheel with a grinding position of the forming grinding wheel as a reference to guarantee the size; and (9) obtaining other sizes required in graph paper in a machining mode. The machining method is simple in working procedure, work efficiency is improved, precision after machining is high, and the sizes completely meet requirements of the graph paper.

Description

technical field [0001] The invention relates to a processing method for a hole-extruded rod, which belongs to a mechanical processing technology. Background technique [0002] A high-efficiency process method for finishing holes during extrusion processing. It can complete the finishing size of the inner hole of the workpiece, squeeze the surface, and strengthen the surface layer. The characteristics of plastic deformation under action. A special extrusion tool is used to apply a certain cold extrusion force to the hole surface of the workpiece to cause plastic deformation on the metal surface and achieve the purpose of finishing and strengthening. Especially for the holes used to extrude the upper skin of the aircraft, it is found through experiments that the performance of the holes extruded by the extruded rods is obviously improved, thereby improving the relevant performance of the aircraft. [0003] Extrusion tools are generally divided into two types, one is a ball e...

AI Technical Summary

Problems solved by technology

The front and back of the workbench are respectively provided with a front cone surface and a rear cone surface, and the front cone surface, the rear cone surface and the horizontal plane form a front cone angle Ф and a rear cone angle Ф′ to make a transition. Angle requirements are strict, and at the same time the diameter accuracy of the worktable must not be damaged, and the grinding process of the profile is difficult to meet the drawing requirements

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