Machining method for eliminating needle plate deformation

Abstract

The invention discloses a machining method for eliminating needle plate deformation. The machining method is characterized by comprising workpiece sawing, six-surface rough milling, rough hole punching, fine hole punching, hole detection and finish milling. The machining method creatively classifies holes in a needle plate to two types of rough holes and fine holes for the first time, adopts a two-step procedure of machining the fine holes after machining the rough holes, discards a traditional process of once punching, can effectively guarantee the needle plate to have no high deformation in a short time due to quick thermal alteration, can machine the holes in the needle plate in a dispersed manner by the two-step method, and guarantees no stress concentration of the needle plate to influence the mechanical performance.

Description

technical field [0001] The invention relates to the technical field of formwork processing, in particular to a processing method for eliminating deformation of a needle plate (ejector plate). Background technique [0002] The mold base is a semi-finished product of the mold. It is composed of various steel plates and matching parts. It can be said that it is the skeleton of the whole set of molds. be valued. [0003] The needle plate is the plate used to lift the product in the mold. Its balance and verticality requirements are very high. The shape of the needle plate is generally a rectangular plate, and many holes are set on the plate. For example, the size is 1-2m long, 0.3-0.4m Plates with a thickness of 0.5-1.5m in width; the traditional method of processing the holes on the plate is generally to use drilling equipment to directly drill all the required holes on the plate at one time after the plate is cut; The holes are generally divided into two categories, one is c...

AI Technical Summary

Problems solved by technology

[0003] The needle plate is the plate used to lift the product in the mold. Its balance and verticality requirements are very high. The shape of the needle plate is generally a rectangular plate, and many holes are set on the plate. For example, the size is 1-2m long, 0.3-0.4m Plates with a thickness of 0.5-1.5m in width; the traditional method of processing the holes on the plate is generally to use drilling equipment to directly drill all the required holes on the plate at one time after the plate is cut; The holes are generally divided into two categories, one is coarse holes with low precision requirements; the other is fine holes with very high precision requirements, such as ejector pin holes; Drilling, and the thickness of the plate is limited, repeated drilling processing, it is easy to cause thermal changes in the entire plate, and the deformation size is large, resulting in a large deviation between the processing accuracy, size, balance, and verticality of the final product and the theoretical requirements. The thimble cannot be used

Moreover, since the holes are not classified and punched, the size of the fine holes also varies greatly due to the large thermal deformation variable.

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