Nestle vibration aging machine and automatic stress relief machine use the principle of resonance to eliminate and homogenize residual stress in metal castings, forgings, welded structural components, non-ferrous metals and other parts, in order to prevent dimensional deformation and cracking of the parts. Compared with traditional heat aging methods, it can save energy by 95%, reduce production costs by 80-90%, shorten production cycles by about 90%, and does not produce aging oxidation skin; No environmental pollution, not limited by part size, site, etc., and the time effect is intuitive and superior to thermal aging.