Patent Number: 6,309,592

Title: Method for manufacturing roller carrier of vibration balance device

Abstract: A method for manufacturing the roller carrier of a vibration balance device, the roller carrier is installed with at least one round track around a rotary axis thereof for carrying a plurality of rollers; characterized in that: the roller carrier is made of alloy powder and made by a process of metal powder metallurgy. The material of the powder is SUS-316L or other proper alloy powder. The manufacturing process of the metal powder metallurgy includes the steps of: feeding material, compacting, sintering, and sizing, or other manufacturing process of the metal powder metallurgy (MIM) can be used, which includes the steps of feeding material, pelletizing, injection molding, debinding, sintering, and sizing. The roller carrier from aforementioned processes uses less materials, can be mass-produced, has a precise dimension, is light weighted, has a smooth surface and has a high surface hardness. In other word, the roller carrier made from the manufacturing process of metal powder metallurgy not only has preferred physical properties, such as good hardness, smoothness and precision, but also can reduce the vibration from the eccentricity of rotation. Moreover, the manufacturing cost can be reduced greatly and yield is increased. Therefore, the present invention is economical.

Inventors: Wang; Ta-Hsiang (Taipei, TW), Liao; Cheng-Yao (Taipei, TW), Chuang; Jui-Nan (Taipei, TW), Chen; Tzu-Nan (Taipei, TW)

Assignee: Lite-On It Corporation

International Classification: B22F 5/10 (20060101); B22F 5/00 (20060101); B22F 001/00 ()

Expiration Date: 10/30/2018