排序方式: 共有115条查询结果,搜索用时 15 毫秒
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从“他组织”走向自组织——关于制造哲理的沉思 总被引:3,自引:0,他引:3
剖析传统制造模式的弊端 ,从制造系统与制造过程的复杂性说明制造模式变革的必要性 ;比较了人造系统中传统的“他组织”模式与自然系统的自组织模式的优劣 ,论述了自组织的特点和机制 ;指出从“他组织”走向自组织乃是制造业走出困境的必由之路 ,自组织将是 2 1世纪的制造哲理 ,也是新一代制造系统的重要特征 ;探讨了自组织过程对于环境的影响 ,导出了“熵污染”的概念 ,指出了减轻“熵污染”的途径 ;列出了与自组织制造模式有关的研究课题及待解决的关键问题 ,并提出从有序度和熵的角度来认识、构造和运行制造系统的思路 相似文献
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师汉民 《中国科学E辑(英文版)》1999,42(3):275-281
Based on the “principle of minimum energy”, the basic characteristics of non-free cutting are studied; the phenomenon and the nature of chip-ejection interference commonly existing in the cutting process of modem cutting tools are explored. A "synthesis method of elementary cutting tools" is suggested for modeling the cutting process of modem complex cutting tools. The general equation governing the chip-ejection motion is deduced. Real examples of non-free cutting are analyzed and the theoretically predicted results are supported by the experimental data or facts. The sufficient and necessary conditions for eliminating chip-ejection interference and for realizing free cutting are given; the idea and the technical approach of "the principle of free cutting" are also discussed, and a feasible way for improving or optimizing the cutting performance of modem cutting tools is, therefore, found. 相似文献
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