Processing technology for shaft parts

A technology of shaft parts and processing technology, which is applied in the field of processing technology of shaft parts to achieve the effects of reducing hardness, refining grains, and improving surface hardness

Inactive Publication Date: 2017-05-10
徐玉明
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing processing technology for processing and producing shaft parts, and solve the inconvenience t

Method used

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Embodiment Construction

[0014] A processing technology for shaft parts, the method step process is blanking-turning both ends-drilling center hole-rough turning each outer circle-quenching and tempering treatment-repairing center hole-nitriding-semi-finishing each outer circle Circle—grooving—chamfering—threading—keyway drawing processing line—milling keyway—center hole repair—grinding—inspection;

[0015] The shaft parts are made of 45 steel. After quenching and tempering treatment, better cutting performance can be obtained, and comprehensive mechanical properties such as higher strength and toughness can be obtained. After quenching, the surface hardness can reach 45~52HRC;

[0016] During the rough machining described above, the outer surface of the round steel is clamped by a three-grab self-centering chuck, the tailstock uses the top to withstand the center hole of the tail, and the top adopts an elastic top, so that the workpiece can be freely elongated in the axial direction; The central hole...

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Abstract

The invention relates to a processing technology for shaft parts. The processing technology is characterized by comprising the steps of material preparation, turning of two end faces, center hole drilling, rough turning of each outer circle, thermal refining, center hole polishing, nitrizing and semi-extractive turning of each outer circle, recessing, chamfering, threading, key groove processing line marking, key groove milling, center hole polishing, grinding and checking. The double-center method is adopted, a tailstock adopts an elastic center and positioning is accurate; reversing feed is adopted when cutting is conducted, and when a slender shaft is cut, a turning tool generally is made to do a feed movement towards the tailstock direction, in this way, the feed force applied on a work piece by the tool is in the direction towards to the tailstock, and therefore the work piece has a tendency to axial extension; a three-jaw chuck provided with three jaws can freely move and is convenient to clamp and firm in clamping, so that inconveniences brought to a worker due to different thicknesses of the work pieces are greatly reduced. In general, the processing technology has the advantages of being convenient in operation, improving the efficiency and improving the accuracy of the work piece.

Description

technical field [0001] The invention relates to the technical field of shaft processing, in particular to a processing technology of shaft parts. Background technique [0002] Shaft parts are one of the typical parts often encountered in machines; they are mainly used in machinery to support transmission parts such as gears, pulleys, cams, and connecting rods to transmit torque. For 7-level precision, surface roughness Ra0. 8 ~ 0.4μm general transmission shaft, its process route is: normalizing - drilling center hole on the end face of turning - rough turning each surface - finishing turning each surface - milling spline, keyway - heat treatment - repairing center hole - rough grinding outer circle - Fine grinding outer circle - inspection; due to the poor rigidity of the slender shaft, it is easily deformed during processing, which has a great impact on processing accuracy and processing quality. Contents of the invention [0003] The purpose of the present invention is ...

Claims

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Application Information

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IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 徐玉明
Owner 徐玉明
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