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Efficient machining of typical parts in aerospace field

The complexity of aerospace parts structure, the strictness of processing requirements and the difficulty of material processing put forward higher product and service requirements for tool enterprises. After years of development, some cutting tool enterprises at home and abroad have provided many efficient processing schemes for the industry.
1. Processing of disc and shaft
The machining of disc shaft has two very challenging characteristics: deep inner cavity and dovetail groove. Sandvik clonon offers the following solutions to safely and reliably complete this challenging feature processing. Anti vibration knife plate with Sandvik clonon capto interface is adopted. When machining the inner cavity to a depth of 150 mm, slender tools are used, but the tools are prone to vibration and the chips generated during machining need to be removed from the groove.
2. Turbine disk processing
The materials of such parts (such as Inconel718, wasalloy and Udimet 720, etc.) are usually difficult to machine. The difficult machining feature is usually the contour machining of the cavity, and various interference problems should be avoided.
3. ISO s hole machining
Surface integrity is very important when machining key aeroengine parts. ISO s hole machining is one of the final processes, which makes reliability and safety very important for the delivery of high-quality parts. The following hole processing solutions provided by Sandvik clonon can well meet the requirements of ISO s hole processing.
4. Landing gear processing
Taking the aircraft landing gear as an example to illustrate the effectiveness of the improvement of machining tools in improving machining efficiency and reducing machining cost. The material of landing gear parts is titanium alloy, which is very difficult to process. It takes about one month for traditional tools to process a part. Moreover, because the parts are difficult to process, the tool wear is very fast, and the service life of a cutting edge of the tool is less than 1 h, which leads to great tool consumption and high tool cost. In this case, we are eager to find a tool that can not only greatly improve the machining efficiency, but also reduce the machining cost or not increase the machining cost.
5. Processing of vertical tail
The vertical tail structure is shown in Figure 13. The main challenges of machining this type of structural parts are hole machining, trimming, etc.
(1) The hole processing of CFRP is shown in Figure 14. Working conditions and application requirements: ① carbon fiber reinforced composites with high fiber content unidirectional belt materials. ② Fiber fragmentation is the least. ③ High surface quality and dimensional accuracy. ④ CNC machining center.
(2) Working conditions and application requirements: ① carbon fiber skin. ② Fiber fragmentation is the least. ③ High surface quality: RA = 1.25 um. In the future, the design and use of cutting tools should consider the performance matching between cutting tool materials and workpiece materials. The cutting tool materials should meet the needs of processing objects, especially the processing needs of difficult to process materials. The reasonable cutting tool materials and structural forms should be determined according to different workpiece materials and processing conditions. High speed, high efficiency and high precision machining require cutting tools to have a variety of excellent properties. High toughness and high strength matrix + high hardness and high wear resistance edge is the main development direction of cutting tools in the future.

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