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渐进式工序图绘制研究 被引量:5
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作者 褚学宁 汪永明 《合肥工业大学学报(自然科学版)》 CAS CSCD 1999年第2期7-10,共4页
工序图绘制是企业工艺设计过程中最复杂和任务量最大的工作,文章在分析企业工艺设计过程特点的基础上,提出了渐进式工序图绘制的基本思想和方法,包括基于形状特征工序图形渐进绘制,工序尺寸公差、工艺符号等的标注。这种方法,由于... 工序图绘制是企业工艺设计过程中最复杂和任务量最大的工作,文章在分析企业工艺设计过程特点的基础上,提出了渐进式工序图绘制的基本思想和方法,包括基于形状特征工序图形渐进绘制,工序尺寸公差、工艺符号等的标注。这种方法,由于每次只涉及局部的图形修改,不需要对每道工序图都从零开始绘制,因此。 展开更多
关键词 工序图 工艺序号 工艺设计 CAPP 渐进式 绘制
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A MEMS stronglink with multi-try function used for PC startup in authentication system
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作者 李胜勇 陈文元 +3 位作者 张卫平 肖奇军 谈顺毅 冯敏华 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2009年第2期159-164,共6页
The stronglink with muhi-try function based on MEMS technology and the PC startup in authentication system have been designed and fabricated. The generation principle and structure of UQS code are introduced, which co... The stronglink with muhi-try function based on MEMS technology and the PC startup in authentication system have been designed and fabricated. The generation principle and structure of UQS code are introduced, which consists of two groups of metal counter-meshing gears, two pawl/ratchet mechanisms, two driving micromotors and two resetting micromotors. The energy-coupling element is a photoelectric sensor with a circular and notched plate. It is fabricated using the UV-LiGA process and precision mechanical engineering. The PC startup authentication system is controlled by BIOS program, which is written into the chip according with special format. The program in BIOS output signals controls the running of stronglink to finish the process of authentication. The device can run more than 10000 times before a stop. The driving voltage is 12 V, and the normal decoding time is 3 s. 展开更多
关键词 stronglink multi-try UQS AUTHENTICATION PC startup
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