(3) Cutting of high precision and high surface quality workpieces
Compared with ordinary cutting, the chip deformation and cutting force during vibration cutting are small, the cutting temperature is low, no built-up edge, scales and surface micro-cracks are formed on the machined surface, and the degree of surface hardening is large, and residual compressive stress is generated on the surface. Small, the cutting process is stable, and it is easy to machine workpieces with high precision and high surface quality. For example, the above-mentioned ultrasonic vibration turning an elongated shaft (length 200 mm, 7 mm) made of soft aluminum can obtain a machining accuracy of 2 μm roundness and 3 μm/170 mm cylindricity. When the φ5mm motor rectifier copper wire is ultrasonically turned, a mirror surface of Ra=0.05μm can be obtained, which is impossible to achieve by other processing methods.
(4) Cutting and chip breaking are difficult to cut
When cutting, reaming, tapping, cutting, sawing, broaching, etc., the chips are often in a semi-closed or closed state, so it is often necessary to reduce the amount of cutting due to the difficulty of chip breaking and chip breaking. Vibration cutting can solve chip breaking and chip breaking smoothly, ensuring processing quality and improving production efficiency.
5 Conclusion
With the development and advancement of science and technology, ultrasonic vibration cutting is gradually infiltrating into various fields as a new technology, and the research and development of ultrasonic vibration cutting has been receiving more and more attention. China has a big gap in the research and utilization of vibration cutting technology compared with foreign countries. It is very important to strengthen the research, promotion and application of high-speed ultra-high-speed grinding technology to improve the processing level of China's machinery manufacturing industry and accelerate the development of new products. The meaning.
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