The characteristics and difficult point exiting in auto weldingjig design is introduced briefly.The design objective and Logical structure of 3-D jig CAD system are presented and system is developed on the computer platform.%简析了汽车焊接夹具设计的特点及现行设计手段的难点,由此提出了三维夹具CAD系统的设计目标和逻辑结构,并在微机平台上开发了此系统。
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