Hollow shaft machining method

A processing method and hollow shaft technology, applied in the direction of drilling dies for workpieces, etc., can solve the problems of low part processing qualification rate, long part processing cycle, and high part processing cost, so as to achieve low processing cost, short processing cycle, and low cost. The effect of processing costs
CN106862880AActive Publication Date: 2017-06-20AVIC POWER ZHUZHOU AVIATION PARTS MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AVIC POWER ZHUZHOU AVIATION PARTS MFG
Publication Date
2017-06-20

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Abstract

The invention discloses a hollow shaft machining method. A bar is machined into a hollow shaft, an annular step is arranged on the outer circle of the hollow shaft, a center through hole is formed in the hollow shaft, and a plurality of vertical through pin holes are formed in the outer circle of the hollow shaft. The hollow shaft machining method comprises following steps: the bar is machined, and the bar is machined into a semi-finished product with the step and the center through hole; the semi-finished product is stably treated so as to release machining stress; the stably-treated semi-finished product is subject to semifinishing; a drill mold for drilling the hollow shaft is adopted to fixedly clamp and drill the semi-finished product subject to semifinishing, and a semifinishing product with the step, the center through hole and multiple small holes is formed; the semifinishing product is subject to nitrogen treatment, and the semifinishing finished product subject to nitrogen treatment is subject to finishing, and the hollow shaft is formed. The hollow shaft machining method is low in machining cost, high in yield and short in machining period.
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Description

technical field

[0001] The invention relates to the field of hollow shaft processing, in particular to a hollow shaft processing method. Background technique

[0002] During the design and manufacture of aero-engines, processing is often required as shown in the accompanying drawings figure 1 Thin-walled hollow shaft shown. The existing technological plan for processing the hollow shaft is as follows: collar bar material—quenching and tempering—rough turning—deep hole machining—semi-finishing—electric machining of small holes—nitriding—machining benchmark—finishing Grinding—magnetic particle nondestructive testing—inspection and storage. The existing processing scheme has the following disadvantages:

[0003] 1) The processing cost of parts is high: CNC deep hole drilling is used for deep hole processing, and the equipment is expensive. Finally, a remelting layer is formed on the surface of the small hole. In order to detect whether the remelting layer exceeds a certain ...

Claims

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