内螺纹低频振动冷挤压试验研究
收稿日期: 2012-02-29
修回日期: 2012-03-19
网络出版日期: 2012-05-03
基金资助
空装"十一五"预研项目
Experimental Research on Internal Thread Formation by Cold Extrusion Based on Low Frequency Vibration
Received date: 2012-02-29
Revised date: 2012-03-19
Online published: 2012-05-03
Supported by
Air Force Equipment Eleventh Five-Year Plan Pre-research Project
梁瑜轩 , 黎向锋 , 左敦稳 , 黄小龙 , 缪宏 . 内螺纹低频振动冷挤压试验研究[J]. 航空学报, 2013 , 34(2) : 442 -450 . DOI: 10.7527/S1000-6893.2013.0051
Internal thread formation by cold extrusion based on low-frequency vibration can realize vibration extrusion by extruding tap. It can turn the process of dry friction into a more favorable state of boundary friction. Therefore it can overcome the defect of traditional cold extrusion that the coolant cannot easily enter the extrusion zone. The experimental study shows that: as the exciting frequency increases, so does the extrusion torque; as the exciting force increases, the extrusion torque decreases first, and then increases; as the exciting arm length increases, the extrusion torque also increases. Under the same conditions of the process parameters, the internal thread formation by cold extrusion based on low-frequency vibration exhibits a higher rate of thread teeth height and fewer defects of the teeth top than traditional methods, and the method can improve the fatigue strength and surface morphology of the thread so formed.
Key words： internal thread; cold extrusion; low-frequency vibration; extrusion torque; friction
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