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Shi Y.B.,HeNan Polytechnic Institute Nanyang | Yang S.,HeNan Economics and Management School Nanyang
Applied Mechanics and Materials | Year: 2013

Traditional production process for hollow thin-walled thread rolling is not enough. Cold extrusion process method for hollow thin-walled thread rolling is introduced principally with spindle support in this paper. It is practiced by means of spindle support in general rolling machine. Some process are explain in detail, such as select of support Spindle size, choose of rolling strength, select feed speed, lengthen shaping time and so on. © (2013) Trans Tech Publications, Switzerland.


Shi Y.B.,HeNan Polytechnic Institute Nanyang | Yang S.,HeNan Economics and Management School Nanyang
Applied Mechanics and Materials | Year: 2014

The intermediate link of nc systems and machine tools is Servo system. Servo system failure is an important part of the failure of CNC machine tools. Firstly, most common servo system fault mode is introduced from actual work; Secondly, according to fault locating method to determine fault location is discussed; Finally, servo system fault diagnosis example and processing method are introduced. © (2014) Trans Tech Publications, Switzerland.

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