The research of High Precision mold positioned mechanism analysis and improvement

• Main Authors: YEN-YUAN CHANG, 張演原
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/85568455273253172889

碩士 === 逢甲大學 === 材料與製造工程所 === 99 === This research investigated the existing optical positioning system of the optical mold, and used the principle of rolling-ball to improve the optical mold positioning system. Also used the experiment method to confirm the feasibility of manufacturing in the mechanism. Finally modified this structure for possibility future production style. In this study, the finite element software Pro / MECHAN was used to analysis the taper pins which used by the current optical factory. To obtain the deformation error due to stress and the errors caused by mechanism manufacturing. The positioning system design of this study mainly use the pre-compression ball bushing to offset the errors caused by manufacturing in order to obtain higher precision positioning. But because the ball and the positioning pin is point contact, the stress of mold weight caused positioning error must be considered. So the discussion and stress analysis for this situation were used. The results show the impact of weight on the positioning system is not serious. In this paper, experiments were also used to verify that the manufacturing errors could be eliminated. The results confirmed that the mold displacement volume of this positioning mechanism can be suppressed less than 1?慆, achieving the purpose of high precision.