Composite processing method of difficult-to-process material

Abstract

The invention relates to a combined machining method for removal machining and ultra-precision cutting of materials difficult to machine. Providing a workpiece to be processed, wherein the workpiece to be processed is prepared from a difficult-to-process material; determining a machining target of the to-be-machined workpiece; carrying out semi-finish machining on the workpiece to be machined by utilizing a numerical control machine tool; machining parameters are designed, large-cutting-amount machining is conducted on the to-be-machined workpiece, most of materials in a machining target of the to-be-machined workpiece are cut off, and a semi-finished product with the precise profile tolerance and the good surface quality is obtained; an ultra-precision machining area is arranged between the semi-finished product and the machining target; the semi-finished product of the workpiece to be machined is directly put into an ultra-precision machine tool to be subjected to ultra-precision machining; the ultra-precision machining area of the semi-finished product of the to-be-machined workpiece is cut off, and the shape error of the semi-finished product of the to-be-machined workpiece is corrected; and a finished workpiece with submicron-level contour precision and nano-level surface roughness is obtained.

Description

technical field [0001] The invention relates to an ultra-precision machining method for difficult-to-machine materials, in particular to a composite machining method for removing and ultra-precision cutting of difficult-to-machine materials. Background technique [0002] Due to its excellent physical properties and chemical stability, it can maintain stable material properties in harsh environments (high temperature, humidity and pollution, etc.), materials such as single crystal silicon, polycrystalline silicon, silicon carbide, sapphire and quartz are generally considered to be Difficult to machine material. These difficult-to-machine materials can be used not only as final components in various fields, but also as precision molds in precision compression molding. Such materials are widely used in electronic information and aerospace fields. At present, the processing technologies of conventional difficult-to-machine materials mainly include precision turning and grindin...

AI Technical Summary

Problems solved by technology

[0004] CN114029872A discloses a new dressing tool and dressing process used in its preparation process to improve the edge height of the abrasive layer of the grinding wheel, improve the overall sharpening effect of the grinding wheel, thereby improving its sharpness, and improving the processing efficiency of this type of workpiece , to solve the technical problem of difficult machinability of existing high-temperature alloys, composite ceramic coatings and titanium alloys and other difficult-to-machine materials

The current disadvantage of this type of method is that the semi-finishing cycle on ultra-precision machine tools is long, the cost is high, and it will cause greater wear to the tool, thus affecting the accuracy of subsequent finishing.

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