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浏览/检索结果: 共6条，第1-6条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 A highly efficient and convergent optimization method for multipoint tool orientation in five-axis machining 期刊论文 INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2017, 卷号: 93, 页码: 2711-2722 作者:  Chen, Zhitong;  Li, Shanshan;  Gan, Zhiwang;  Zhu, Yu 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/30 Multipoint tool orientation  Two contact points  Wide strip width machining  Tool orientation optimization  Five-axis machining   Coal pillar safety and surface deformation characteristics of wide strip pillar mining in deep mine 期刊论文 ARABIAN JOURNAL OF GEOSCIENCES, 2016, 卷号: 9, 期号: 2 作者:  Guo, Weijia;  Wang, Hailong;  Chen, Shaojie 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/16 Coal pillar safety  Surface deformation  Wide strip pillar mining  Deep  mine   Optimal cutter orientation for five-axis machining based on mechanical equilibrium theory 期刊论文 INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2016, 卷号: 84, 页码: 989-999 作者:  Gan, Zhiwang;  Chen, Zhitong;  Zhou, Meng;  Yang, Jun;  Li, Shanshan 收藏  |  浏览/下载：5/0  |  提交时间：2019/12/30 Tool orientation  Wide strip width machining  Five-axis machining  Two points contact  Multipoint machining   Performance of a new LMRPC prototype for the STAR MTD system 期刊论文 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 卷号: 640, 期号: 1, 页码: #REF! 作者:  Wang, Y;  Chen, HS;  Ding, WC;  Qiu, XZ;  Wang, JB 收藏  |  浏览/下载：27/0  |  提交时间：2016/04/12 MRPC  Time of flight  Wide strip  Beam test  Muon Telescope Detector   Micro-motion exposure method based on PZT piezoelectric ceramics (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China Sun W.-J.; Zhang M.-H.; Meng Z. 收藏  |  浏览/下载：91/0  |  提交时间：2013/03/25 There mainly is laser digital photofinishing technique and digital photofinishing technique based on LCD consisting of TFT and LCOS in the digital photofinishing field at the present time. The former have a good many merit such as wide color gamut  high processing rate  large output size and high brightness  but his cost is very high  his maintain technique being comparatively complex  that result in difficult use for people. The utilization ratio of the latter is low because of lower resolution and lower aperture ratio for LCD  but the digital photofinishing based on LCD have lower cost and higher utilization ration  being suitable for people's current standard of living. Considering above mentioned problem  a micro-motion exposure method based on PZT piezoelectric ceramics used in digital image photofinishing is presented. The two-dimension micro-motion exposure system consisting of PZT piezoelectric ceramics  LCD panel  polarizing film and spring strip is designed. By means of PZT piezoelectric ceramics the LCD panel is removed about the one half of the pixel size of the LCD panel for four times from the original place  at the same time imaging system is exposed four times at the printing paper. The software is used to control the time synchronization  the exposure time and motion range of the LCD panel. The system has advantages such as shorter response time than 0.1seconds  lesser motion error than 0.01 microns  high stability and repeatability. Experimental results show that the proposed micro-motion exposure method improve the picture brightness and enlarge output size  at the meantime reducing the cost of the system. 2009 SPIE.   Prediction and Evaluation of Mining Damage in Deep Coal Seam Under Villages 会议论文 International Symposium on Risk Control and Management of Design, Construction and Operation in Underground Engineering, OCT 20-22, 2009 作者:  Chang, Xi-Kun;  Guo, Wei-Jia;  Huang, Dong-Mei;  Liu, Zeng-Ping 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/31 wide strip  mining under villages  iterative fitting  surface movement  and deformation  mining damage