Technological method of titanium alloy parts in turning processing

Take titanium alloy spacers as an example to analyze the technological methods of titanium alloy spacers in turning processing. Gold titanium alloy spacers are generally used in high-precision instruments because of their simple overall structure and relatively low thickness. However, due to the low hardness of titanium alloy itself, the difficulty of processing will be increased. If traditional processing methods are used, the titanium alloy spacer will be deformed and the processing will not be marked. Therefore, in the processing process, the staff generally use the high-precision CNC wire cutting technology to make the titanium alloy spacer. Although it can improve the processing accuracy of the titanium alloy spacer, it will also greatly reduce the production efficiency of the titanium alloy spacer. The manufacturing cost will also It is relatively high and this processing method cannot be used on some special materials, so it is necessary to use the turning method to process the titanium alloy spacer. 1 Process analysis The process of processing titanium alloy spacers can be said to be a very cumbersome process. The main reason is that the hardness of the titanium alloy itself is poor, plus the titanium alloy spacer. The processing equipment will also apply to the spacer during the processing. Therefore, the pressure during processing will be affected by the dual factors of its own quality and equipment pressure, and the deformation of the titanium alloy spacer will cause the machining accuracy to decrease. It is impossible to guarantee that the titanium alloy spacer will meet the requirements after processing []. For example, titanium alloy spacer parts are annular thin slices, so in order to ensure that the parts can give full play to their advantages in the instrument during processing, it is necessary to ensure that the progress of the titanium alloy spacer can be guaranteed to be α±0.01, the spacer plane tolerance is 0.02, and the spacer surface is rough. The degree must be guaranteed at Ra0.8μm. If the titanium alloy spacer can meet this standard, it is necessary to ensure that the staff prevents the titanium alloy spacer from deforming or bending during the production of the titanium alloy spacer. The traditional method cannot perfect this guarantee. 2 The reason for the problems in the processing technology. In the process of processing titanium alloy spacers, the “one size fits all” turning process was generally used to cut the titanium alloy to a thickness of 06mm and a flatness of about 030mm. However, this method is often used in the manufacturing process. Lead to phenomena such as deformation and bending of parts. 2.1 The quality of the titanium alloy itself The quality of the titanium alloy spacer itself is small and its stability is poor. Therefore, in the cutting process, it is often deformed due to the vibration generated by the equipment and the spacer itself. In other words It is because the internal stress of the metal during the cutting process of the titanium alloy spacer is greater than the mass of the half body, which leads to the deformation and bending of the spacer. 2.2 The phenomenon of deformation caused by the cutting pressure is particularly reflected in the back action of the titanium alloy spacer to close the titanium alloy Extrusion deformation, which directly affects the overall use of the spacer. This phenomenon is very obvious in the cutting process, because the cutting edge is often implemented in a semi-closed state, which leads to the cutting process. The heat generated between the equipment and the titanium alloy can not effectively guide the teaching and improve the unisexual deformation of the titanium alloy spacer [2]. 2.3 Improper use of the device Because the titanium alloy spacer itself is relatively thin In the process, it is not suitable to use the chuck to directly install the spacer. If you want to ensure the effect of the installation, you must apply force. This will cause the titanium alloy spacer to be unbalanced and severely deformed when the turning process is implemented. It can be seen that during the turning process of titanium alloy spacers, the spacer is often affected by various external factors such as cutting force and deformed. If the installation equipment is used for fixing, more serious deformation will occur. Therefore, for titanium alloy parts In the process of processing, it is necessary to reduce the flatness of the parts and the assembly errors formed in the flatness. These factors are one of the main reasons for the deformation of the titanium alloy spacer.