【正文】
optimization products in manufacture process with prediction manufacture circle and promptly modification design [1][2].Virtual reality technology is a very important support technology for virtual manufacture because it is an important way of virtual design production. With the appearance of Java and VRML technology, robot motion 2 simulation on WEB browser turns into realization [3][6]. Robot motion simulation is a necessary research direction in robot research field. Guo[4] adopted ADAMS software for 3RPC robot motion simulation, but the method isn’ t suitable for motion simulation on inter. Yang[3]and Zhao[5] researched the motion simulation of robot by VRML, and they didn’ t optimize VRML file. Bo[8] provided environmental simulation within a virtual environment by Java and VRML interaction through the External Authoring Interface. Qin[9] researched a novel 3D simulation modeling system for distributed manufacturing. In this paper, the CINCINNATI robot is researched and analysed by VRML and Java and VRML file is optimized fortransmission on inter. The 3D visualization model of the motion simulation for robot is realized by VRML and Java based on virtual reality. Therefore the research about motion simulation of robot based on inter is significant and application value. II. KINEMATICS OF ROBOT There are two problems for the kinema