Harmonic drive uses a constructed controllable elastic deformation to transfer mechanical motion. Harmonic drive is usually composed of three basic components, including a rigid wheel with inner teeth, a flexible wheel with outer teeth that can produce radial elastic deformation when working, and a wave generator installed inside the flexible wheel, oval shape, with flexible rolling bearings in the outer ring. The number of external teeth of the flexible gear csD-20-50-2UF is less than the number of internal teeth of the rigid gear. When the wave generator rotates, the outer teeth of the flexible wheel corresponding to the long axis direction just completely engage the inner teeth of the rigid wheel
It is realized by adding a certain conductive powder into the edM working fluid to increase the discharge gap. The strategy of processing harmonic gear CSD-20-50-2uF by Hamanaco mold cavity to disperse the discharge points is adopted. It can easily process the surface with roughness not greater than Ra0.8E}m. Mitsubishi Electric Corporation has developed electric machining machine using this technology, hamenaco mold cavity processing harmonic gear CSD-20-50-2UF, but there is still a lack of technical specifications, and the mixing powder processing erosion must be strictly controlled, otherwise it will affect the surface smoothness. Generally, the service life of the mold can be increased by 50% when the surface roughness of the mold is improved. However, due to the complex shape of the three-dimensional mold cavity itself, the polishing process is difficult to be automated, so it is still mainly manual work. According to the information, the workload of mold polishing accounts for about 1/3 of the total workload of mold manufacturing. Therefore, the maturity of this technology will greatly improve the efficiency of mold cavity processing.
Section 6 Magnetic particle grinding technology
It is distance function high permeability of the magnetic fields of grain hammer naco mold cavity machining harmonic gear CSD - 20 to 50-2 uf abrasive to implement complex curved surface grinding and polishing, its outstanding advantage is not strictly control the grinding head and the polishing surface, the relative position between, easy to realize automatic polishing and polishing tool has simple structure, low equipment cost. It is especially suitable for polishing thin wall, small and concave parts. At present, the main problem is that the efficiency is too low, and the magnetic abrasive components made by sintering or chemical bonding are not uniform, and the resultant force of abrasive and magnetic materials is not strong, and the service life is low.
To sum up, the status of special machining technology is becoming more and more important. The harmonic gear CSD-20-50-2UF has become an integral part of modern manufacturing technology.