The Research And Development Of Carbide Aviation Thread Tools

In recent years, with the rapid development of aviation industry, The requirements of the Details of cooperation for related equipment in aerospace manufacturing is more and more high. Especially the using and processing of the screw thread.Titanium alloy is the ideal material of aviation equipment manufacturing. Because of its high specific strength, it can reduce the aircraft weight greatly under the condition of satisfying various performance and improve the capacity and mobility of the plane. It has strong competitiveness and broad market prospect in the field of aviation materials. But the titanium alloy is difficult to cut.The tool is easy to be bonded and abraded and the machined surface quality are greatly influenced by the cutting tool and work piece material and the cutting temperature. These shortcomings have become the key factors that restricting the development of the titanium alloy thread cutting process. Titanium alloy parts’ thread processing is different from the common thread. For aviation equipment, the requirement of the thread’s precision and ability to resist fatigue is far higher than common thread. This leads to the higher cost of aviation thread machining. Therefore, this article will focus on the study of the titanium alloy thread turning cutting tools, include the cutting tool structure, cutting parameters, tool wear, cutting force and cutting heat, etc. This paper have mainly done the following several aspects work:(1) According to the principle of the thread turning processing, studied the MJ thread turning processing mechanism and provide the theoretical basis for planning the cutting test and improving the actual machining process.(2) According to characteristics of MJ thread processing, the cutting experiment that focus on cutting force, chip morphology, and tool wear in three phases is carried out.(3) Using the finite element simulation software to set up the cutting process simulation model of titanium alloy thread. The test conclusion according to the thread turning of titanium alloy is verified.(4) According to the principle of the transmission of cutting heat. Studied the cutting parameters, cutting tool geometry angle and blade passivation’s influence to the cutting temperature and its distribution by the finite element simulation. And introduced the dislocation movement and shear slip theory to study the formation process of serrated chip. Analysis the cutting condition’s influence to the chip formation.