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A kind of processing method of metal spiral bar

A processing method, the technology of spiral ribs, applied in the field of mechanical cutting, can solve the problems of reducing processing accuracy, cutting stress concentration, complex production process, etc., and achieve the effects of improving product qualification rate, realizing deformation control, and simple process

Active Publication Date: 2021-10-12
HUBEI JIANGSHAN HEAVY IND
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Problems solved by technology

[0002] In the prior art, there are many defects in the metal spiral rib processing method used for the non-metallic directional pipe spiral groove forming die, the production process is complicated, the machining process is simple, the process measures are lacking, the yield is low, and the operability is very poor. Poor; at the same time, the secondary clamping process reduces the machining accuracy, and the concentration of cutting stress causes machining deformation

Method used

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  • A kind of processing method of metal spiral bar

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Embodiment Construction

[0011] The method of the present invention will be further described with reference to the accompanying drawings to provide examples below.

[0012] Step 1, the pre-processing stage, sequentially complete the process of tooling design, center hole drilling, tempering, rough turning, aging and finishing; during tooling design, the tooling mandrel 1 is dimensioned according to the outer dimensions of the spiral rib 5, and the rough turning 1. Reserve a grinding allowance of 0.4-0.5mm for the outer circle of the tooling mandrel 1 of the finishing car; Set quenching and tempering parameters for steel pipe 2 blank properties, so that the material can obtain better comprehensive performance; during rough turning, a turning allowance of 4-5mm is reserved for the inner and outer circles of the rough turning steel pipe 2 blank; during aging, select the appropriate temperature and Timely removal of cutting internal stress; during finish turning, the coaxiality of the inner and outer cir...

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Abstract

The invention relates to a processing method for a metal spiral rib used in a non-metallic directional pipe spiral groove forming die. The steps are: pre-processing, grinding, comprehensive machining, and post-processing; in the pre-processing stage, quenching and tempering, rough turning, aging and finishing machining are completed in sequence, and processing allowance is reserved for rough turning, and finishing turning The coaxiality of the inner and outer circles is guaranteed at the same time, the grinding allowance is reserved for the outer circle, and the grinding allowance is reserved for the inner hole; in the grinding process stage, the inner hole grinding and matching grinding processing are completed in sequence, and the inner hole of the workpiece is ground to determine the size; the inner circle Matching and grinding the outer circle of the mandrel to determine the size; in the comprehensive machining stage, the drilling of the end face, finishing turning, grinding the outer circle, drilling of spiral rib holes, and assembly are completed in sequence. Grinding allowance is reserved; in the subsequent processing stage, rough milling, aging, fine milling and clamping are completed sequentially, the rough milling cavity is reserved for milling allowance, and the cavity of the fine milling spiral rib is determined. The invention has the advantages of simple technological process, good operability, shortened production cycle and improved product qualified rate.

Description

technical field [0001] The invention belongs to the field of mechanical cutting and processing, and in particular relates to a processing method for a metal spiral rib used in a non-metal directional pipe spiral groove forming die. Background technique [0002] In the prior art, the metal spiral rib processing method used for the non-metallic directional pipe spiral groove forming die has many defects, the production process is complicated, the machining process is simple, the process measures are lacking, the yield is low, and the operability is very poor. Poor; at the same time, the secondary clamping process reduces the machining accuracy, and the concentration of cutting stress causes machining deformation. Contents of the invention [0003] The purpose of this invention is to provide a kind of metal spiral rib processing method for the non-metallic directional pipe spiral groove forming die, which utilizes the existing process equipment to realize the form of turning,...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 刘书明戴开明洪伟锋陈伟陆玉丽张丽琴罗觉亮柯丽萍曾平凡孙健
Owner HUBEI JIANGSHAN HEAVY IND
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