Method for machining high-accuracy special profile of elongated rod

A processing method and high-precision technology, applied in the field of mechanical processing, can solve the problems of low processing efficiency, inability to meet the requirements of high-precision curved surfaces of parts, and many changes in profile dimensions, and achieve the effect of ensuring processing accuracy.
CN103273282AActive Publication Date: 2013-09-04GUIZHOU HONGLIN MACHINERY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU HONGLIN MACHINERY
Publication Date
2013-09-04

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Abstract

A method for machining a high-accuracy special profile of an elongated rod comprises the processes of blanking, rough machining, de-stressing, semi-finish machining, heat treatment, datum correction and finish machining. During blanking, the quality of the raw material state is improved to determine an optimum hardness value; by collection of similar part machining data and analysis of conventional technological processes, main factors and processes affecting the needle plug quality are determined, the technological processes are adjusted, and the de-stressing process is added after rough machining and before semi-finish machining, accordingly, effects of residual stress of machining in the subsequent heat treatment process are eliminate; before finish machining, the correction process is added for correcting a machining datum, so that the machining accuracy is guaranteed; and a high-accuracy curved surface is subjected to one-step clamping machining through a high-accuracy numerically-controlled lathe and is cut through an imported cutter, reasonable machining parameters are searched, rough and finish machining allowances are reasonably distributed, and elongated rod special-profile parts are machined to the accuracy meeting technological requirements.
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Description

technical field

[0001] The invention belongs to the field of mechanical processing, and in particular relates to a processing method for a special profile of a slender rod. Background technique

[0002] Slender rod parts are often used in modern industry, and the precision of parts is required to be high. Such as figure 2 The parts shown are slender steel parts, and have high-precision matching outer circles and complex curved surfaces with high shape tolerances and high dimensional requirements. The lathe can turn in place at one time, but cannot meet the high-precision surface requirements of the parts, and there are the following problems:

[0003] 1. Influence of materials: The material grade of this part is: 3J53 (material technical requirements: YB / T5256-1993), and its characteristics are: the raw material is not in good condition, the material is soft, and the release of internal stress leads to deformation of the part;

[0004] 2. Influence of the structure: It ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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