Main tool applications for typical parts of aerospace engines
Aeroengine typical parts The main cutting tools are mainly imported high-performance cutting tools and non-standard special tools.
1 turbine disk
Turbine discs are complex rotary parts made of poorly processed superalloys. They usually have a wide variety of forming cavities. This requires designing, selecting tools and planning the path of the tool with full consideration of the tool and the workpiece. There must be no interference in the reasonable gap between them. The round insert turning tool is the best choice for processing such features. It is especially suitable for rough and fine machining of difficult-to-machine workpiece materials with high processing efficiency and good accessibility. The 90° elbow insert is specifically designed to machine grooves with poor accessibility.
2 Turbine 匣
Superalloy turbine casing usually manufactured, these challenging work sheet metal processing Chinese online copyright material is likely to cause many problems for machining, in particular milling. In the manufacture of such parts, it is precisely necessary to remove a large amount of material by milling. Turning with ceramic milling cutters can significantly increase productivity. The use of round insert milling cutters reduces groove wear on the cutting edges of the inserts and allows for higher feed rates to ensure safe and efficient machining. The hole is milled by spiral interpolation on the solid material.
3 fan machine匣
The fan casing is made of titanium alloy, and the titanium alloy can be processed in China . According to the characteristics of the material and structure of the part, the circular and axial cavities can be processed by the circular blade; the 80° diamond blade can achieve high accessibility in a confined space and can be cut in two directions. Easy to implement knife repair.
4 disc shaft
The deep inner cavity of the disc shaft is machined with a specially designed non-standard tool anti-vibration blade, while the dovetail root groove is machined with a forming elbow insert.
5 axes
The main challenges facing shaft machining are the length of the part and the complex internal characteristics. The anti-vibration mast can be used to solve the machining of the internal characteristics of very demanding shafts.
6 integral leaf disc / impeller
The processing of the integral blade disc is similar to the processing of the blade on the impeller. Factors that ensure successful machining include five-axis five-link CNC machine tools, dedicated five-axis CAM software, and specially developed tools and processes. Slotting generally uses a solid carbide rounded milling cutter. The titanium alloy is slotted by a point milling process, the high temperature alloy is subjected to a cycloidal milling process, and the blade contour finishing is processed by a taper ball end mill.
Main ways and measures to improve cutting efficiency and reduce tool cost
1 Promote the application of a number of advanced, mature and applicable high-tech cutting technologies to accelerate the research of new cutting materials, new tool structures and new cutting technologies.
Taking the machining and manufacturing technology of key components of aero-engines as the main research direction, the following aspects are studied:
(1) Cutting tests including turning, milling, drilling, broaching, grinding and machining surface integrity. The materials to be tested are mainly for high-temperature alloys, titanium alloys and high-strength steels for aviation production and other aviation difficult-to-machine materials, such as thermal spray materials and composite materials.
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