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松散层及推覆体下综放开采覆岩破坏研究 被引量:1
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作者 金吕锋 王志根 《煤炭工程》 北大核心 2002年第7期30-33,共4页
重点介绍在坚硬推覆体片麻岩下厚~特厚煤层综放开采条件 ,采用多方法对覆岩破坏进行预测 ,经探测验证 ,掌握综放开采覆岩破坏规律 。
关键词 综放开采 覆岩 水文工程地质 导水裂隙 离层带 控测验证 煤层 破坏规律
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Method of Precise Auto Tool Setting for Micro Milling 被引量:2
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作者 赵孟 何宁 +1 位作者 李亮 黄逊彬 《Transactions of Tianjin University》 EI CAS 2011年第4期284-287,共4页
Based on microscope and image processing, a new method of auto tool setting for micro milling was presented. Firstly, a realtime image of tool setting area was obtained by microscope and CCD camera, then image process... Based on microscope and image processing, a new method of auto tool setting for micro milling was presented. Firstly, a realtime image of tool setting area was obtained by microscope and CCD camera, then image processing was carried out on this image and the gap between the tool and workpiece was calculated. The gap measurement was sent to motion controlling card to make the tool approach to the surface of workpiece. These steps were repeated until the gap is zero, which means that tool setting was finished. Moreover, a reliability verification test was conducted. Results indicated that the precision of tool setting is satisfactory. 展开更多
关键词 micro milling tool setting image processing
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