xiehe model

As the market demand for turbine engines increases, so does the need for efficient machining of integral impellers. The complexity of impeller processing is mainly due to the complex shape of the curved surface of the blade. According to the forming principle, the curved surface can be divided into ruled surface and non-ruled surface, and the ruled surface can be divided into developable ruled surface and non-developable ruled surface. noodle. The main reason is that it has good processing flexibility, high processing efficiency and wide application. Next, we will discuss several common problems in the process of impeller processing.

1. The depth of the blade at the narrowest part of the flow channel is far greater than the diameter of the tool, and the space between adjacent blades is extremely small. The tool diameter is small during corner cleaning, and the tool is easy to break. The control of the cutting depth is also a key technology for processing.

2. Considering that the overall impeller rotates at high speed in actual work, it is necessary to prevent vibration and reduce noise.

3. The flow path of the overall impeller is narrow, the blades are relatively long, and the rigidity is low. They are thin-walled parts and are easily deformed during processing.

4. The curved surface of the overall impeller is a free curved surface, the flow channel is narrow, the blades are seriously twisted, and there is an obvious tendency to lean back. Interference is easily generated during processing, and processing is difficult.