л????? CAD ????? QQ 194535455 ??????????儎?ど????θ?????θ???????????????θ?????????????2004 ?θ???????????? 30% ??θ???щ?人?θ??????θ?????????θ?????????????????10% ?р?????????????????θ?ぁ????????????????????ж〃?????θ?????????????θ??ж?????????????从????????θ???????????????????????CAD ?????щ??????????????θ?ж??????????????????θ????????????????????????僂??????θ???????θ??ф????θ??????θ??????????????????????щ???θ???????????????ぁθ???〃??????????????????θ????θ???ф???? 673A ??????θ????????θ??????θ??????????????????????щ???θ????????????从θ?ж????????????????????θ????↙??????θ???????ㄔ???θ?????????ж???θ?????从????从?????????????????????????θ俌?????????????θ?????????????χ????????〥θ??????????????χ??????????θ????л????? CAD ????? QQ 194535455 ??????????????????????φ????χ????χ?????л????? CAD ????? QQ 194535455 Abstract In recent years, the rapid development of our country's industry, the mold industry, especially plastic mold put forward more and more high requirements. In 2004, plastic mold in in mold industry accounted for about 30%, according to the relevant experts predict, in the next few years, with the rapid development of economy, China plastic mold industry will also with an average annual growth rate of more than 10% of the speed of rapid development. In the domestic plastic mold market, engineering plastic mold demand is the largest. Injection molding is an important method of plastic molding, it is mainly applicable to thermoplastic plastic molding, can be plex shape of precision plastic parts. This design topic for the bottom plate mold design, mainly related to the design of the mold related knowledge and mold design and related to the application of CAD software and other related professional. Through the design of the mold, to further strengthen the injection mold design of the basic knowledge to master, for the design of more sophisticated injection mold to pave the way and draw a more profound experience. Before the design, it is necessary to have a mechanical drawing, tolera
