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A New Method for Locating Calculation of Arbitrary Spatial Straight Line or Plane in NC Machining
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作者 YAN Shu-tian, LIU Tao, WU Zai-xin, HU Chi-bing, HU Li-zh i (College of Mechano-Electronic Engineering, Gansu University of Techn ology, Lanzhou 730050, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期149-150,共2页
In the manufacturing process, we often encounter so me location machining of space arbitrary straight lines and planes that are not on ly unparalleled but also not vertical with the machine tool spindle or the cutti n... In the manufacturing process, we often encounter so me location machining of space arbitrary straight lines and planes that are not on ly unparalleled but also not vertical with the machine tool spindle or the cutti ng tool. In the past, we can do the location machining through the methods of dr awing line and making level in the ordinary machine tool. In the numerical contr ol machining of the CNC machine tool and manufacturing center, however, the spac e location and angle of the arbitrary straight lines and planes must be precisel y calculated in advance. So that precisely locating can be guaranteed in machini ng. Therefore, how to work out the space location angle of the arbitrary straigh t lines and planes to be machined both conveniently and precisely, turns out to be the must-be-solved chief problem in the numerical control machining. In thi s paper, through the deeply research of this problem, a new kind of calculating formula that calculates and defines the space location angle of the arbitrary st raight lines and planes by using the methods of analytic calculating. The formul a has been applied in the practical manufacturing calculation. It is proved that the new space angle calculating methods of arbitrary straight lines and planes is convenient in calculating and precise in locating. And it provides us a n ew, brief and precise calculating method in the numerical control machining of t he numerical control machine tool and manufacturing center. 展开更多
关键词 arbitrary straight line arbitrary plane pr ojected angle INCLINATION LOCATION
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A(X,M)-ojective模 被引量:1
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作者 吴德军 《西北师范大学学报(自然科学版)》 CAS 2003年第4期25-27,共3页
作为ojective模的推广,引入了A(X,M) ojective模的概念,并给出了A(X,M) ojective模的等价刻画.
关键词 ojective模 基本A(X M)-ojective模 伪A(X M)-ojective模
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关于基本内射模的注记
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作者 徐玲娟 张东东 《浙江师范大学学报(自然科学版)》 CAS 2007年第4期406-409,共4页
基本内射性是ojectivity的推广.首先讨论了基本内射模和基本ojective模的一致性,并证明了两者是一致的;给出了基本内射模的定义,并用类似于内射模的研究方法得到了基本内射模的Baer准则等性质.
关键词 基本内射模 ojective模 基本ojective模 余补子模 闭子模
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