Part cold heading machining method

Abstract

A part cold heading machining method includes the steps that firstly, a part blank is extruded by a first stamping die (1) to obtain sizes required by head taper and rod necking; secondly, a part (2) obtained in the first step is extruded by a second stamping die (3) to obtain the contour and size of the head of the part; thirdly, the part (2) obtained in the second step is extruded by a third stamping die (4), and a trimming die of a bottom die conducts reverse cutting on the part (2) obtained in the second step to obtain the needed shape and the needed size of the contour of the neck of the part; fourthly, upper and lower double cutting is carried out on the periphery of the head of the part (2) machined in the third step through a fourth stamping die to obtain the shape and size of the contour of the head of the burr-free part, and the whole part cold heading machining process is completed. The part cold heading machining method has the advantages that the utilization rate of materials is high, the materials are saved, cost is saved, the procedures are simple, the dies can conduct one-shot machining forming as long as the part is placed at an appointed position, efficiency is high, adjustability is high, the reject rate is lowered, burrs can be effectively removed, and the application effect is good.

Description

technical field [0001] The invention relates to a part processing method, in particular to a part cold heading processing method for effectively removing burrs from the part. Background technique [0002] There is an existing Chinese invention patent with the application number CN201110341854.2 titled "Titanium Alloy Fastener Cold Heading Forming Process", which discloses a titanium alloy fastener cold heading forming process. The titanium material in the coil annealed state adopts a small-pass process during drawing, that is, the deformation after each annealing increases by one pass, and the processing amount of each pass is 50% of the processing amount of the previous pass; the drawn disc The coil material is fed into a high-strength multi-station cold heading machine, and is made by at least two cold headings, and the deformation of each cold heading does not exceed 50%. The application of the new process of the invention will improve work efficiency by 10-15 times, red...

AI Technical Summary

Problems solved by technology

But its disadvantages are that the process is more complicated, there is still room for improvement in material utilization, the range of processed materials is small, and the product may have burrs, which affect product quality, so its structure still needs to be improved.

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