The cutting of titanium alloy belongs to cutting, so the tool spindle of the machine tool should have large driving power and powerful cutting function. In the aviation industry, the machining of titanium alloy components is dominated by cavity milling. In order to facilitate chip removal, the cooling and lubricating devices should be well managed. In order to facilitate chip removal, the cooling and lubricating devices should be well managed, so that a large number of high-pressure cooling lubricants can directly spray the cutting edge of the tool. In this way, on the one hand, the tool can be cooled, on the other hand, the chip can be flushed out of the processing area in time to prevent the chip from being cut many times, which will reduce the tool life and scratch the processing surface. In order to enable the machine tool to have high-power cutting function, Heller Company of Germany has designed the machine tool structure and coordinate axis structure in a targeted way,

Titanium alloys are characterized by high strength and poor thermal conductivity. In order to achieve the cutting efficiency like aluminum processing, it is necessary to improve the cutting parameters as much as possible, that is, increase the metal feed and cutting depth, which will lead to an increase in the machining cutting force, which may cause a static deviation between the workpiece and the tool, thus causing the shape accuracy of the part to deteriorate or the processing process to be unstable, and will also accelerate the wear of the tool. Therefore, the machine tools used for titanium alloy processing must have high power and as good static and dynamic characteristics as possible (high static and dynamic stiffness); Corresponding high-pressure cooling and lubrication equipment shall also be equipped to remove chips in time under the condition of low speed and large torque processing, so as to reduce tool wear and reduce the heat generated during processing to the tool. In order to improve the rigidity of the machine tool, some machine tool manufacturers adopt the welded steel structure of the box structure or closed frame; The feed shaft is driven by a high-power feed motor and a high rigidity gap free guide system, which can be clamped at the machining position to further improve the rigidity of the machine tool; In addition, the stiffness of the whole system, including the spindle tool link part and the tool holder, must be improved during processing.

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