Cylindrical accessory machining method and system for metal mold

Abstract

The invention relates to a cylindrical accessory machining method and system for a metal mold. The method comprises the steps that firstly, surface induction quenching pretreatment is carried out on a blank of a roughly-machined cylindrical accessory, and a hardening layer is formed on the surface of the blank; secondly, the pulse current is exerted on the blank, pulse current tempering treatment is carried out on the hardening layer on the surface of the blank, and meanwhile turning machining is carried out to form a semi-finished accessory; and thirdly, the semi-finished accessory rotates, the pulse current is further exerted on the semi-finished product, electroplastic treatment is carried out on the surface layer of the semi-finished accessory, and ultrasonic peening rolling is carried out on the surface of the semi-finished product through an ultrasonic rolling device. The system is formed through refitting on a lathe and is suitable for machining guide columns and various metal rotation body accessories through the method. Compared with a traditional technology, according to the method, the overall mechanical performance, the surface quality and the surface smoothness of the surface layers of the guide columns can be obviously improved, the production procedure is greatly simplified, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of metal processing, and in particular relates to a processing method and system for cylindrical accessories (such as guide posts, punching pins, etc.) for metal molds. Background technique [0002] Mold accessories refer to the general term for metal accessories used in stamping molds, plastic molds or FA automation equipment exclusively in the mold industry. Mold accessories include: punch pin, punch, guide post, guide sleeve, thimble, cylinder, steel ball sleeve, oil-free guide sleeve, oil-free slide plate, guide post components, etc. The guide post is used in the mold and used in combination with components to ensure the precise positioning of the mold for activities and to guide the mold stroke. The biggest challenge encountered in the use of metal mold guide posts is the damage and failure of the surface caused by wear, fatigue, corrosion, etc. Therefore, the actual engineering application has higher requireme...

AI Technical Summary

Problems solved by technology

However, due to the long production cycle and high reaction temperature of the whole carburizing process, the overall mechanical properties of the guide post are reduced, and the production cost is high and the production efficiency is low.

For a long time, most of the domestic metal mold guide post processing fields have adopted this traditional production process. The low surface accuracy of the mold guide post, poor service performance, low processing efficiency and high production cost have become bottlenecks restricting the rapid development of my country's equipment manufacturing industry.

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