step grinding 中文意思是什麼
step grinding
解釋
分段磨礦-
Briefly analysing about cracking bran step and grinding flour process technology
碾皮製粉工藝技術淺析 -
The next operation is surface grinding, and is the step that defines the diameter of the material.
下一步是表面磨削，這是確定材料直徑的工序。 -
At one time complex structure and area of weariness crack ( including whole suspension hollow axis of swivel, half suspension adopted axletree, substituting holistic grinding steel wheels for wheel - hoop compounded wheels, different wheel - axletree structure of different locomotives, different transmission chamfer machining step of axletresses and driven traction gear etc. ) centralizing make wave clutter and repeat to disturb recognition of real fault wave
同時，由於全懸掛空心軸、半懸掛抱軸承等復雜結構車軸的使用和整體碾鋼輪陸續替代輪箍組裝式車輪，各型機車輪軸結構不同，車軸加工臺階和過渡圓角不同，從動牽引齒輪與車軸採用過盈裝配等，在這些結構復雜且疲勞裂紋產生集中的區域，探傷時極易發生波形交織和重復，難以識別真正缺陷波。 -
In the simulation and analysis on culvert construction, the method of foundation - pit excavation layer by layer and step by step was used, i. e. the method that makes the surface of excavation have no stress, when the elements were excavated gradually in period of construction. at this process, the state of soil is unloading, the laws of stress field and displacement field with the depth of excavation were studied. based on the obtained stress field and displacement field after the excavation was completed, by using of the newly increased filling - elements " gravity and the grinding force, the simulation of the construction of body of the culvert and foundation - pit ' s filling layer by layer had also been done in this dissertation
用有限元法模擬分析涵洞基坑開挖時，採用分層、分步模擬開挖過程的方法，即將計算域內單元分層「挖去」 ，使開挖表面成為無應力表面的方法，分析土體在卸載狀態時的應力場和位移場隨開挖深度的變化規律；在洞體施工后，回填土體時，據開挖完成時的應力場、位移場，通過逐級增加計算域內的單元數目，施加每級新增加單元的自重荷載，利用有限元法模擬基坑及上覆土體分層填築的施工過程，這不僅反映土體處于再加載應力狀態時，填土受力及變形的一般規律，而且這種將地基? ?涵洞? ?土體作為一個統一整體進行模擬的方法，量化了三者之間的相互作用關系。 -
Based on 5 - axis nc linkage, aocmt can generate freedom - form surface in normal manner, and grinding accuracy is better than 8 m. 4. according to the error component of various wavelength, feeding step length, convergence ratio and anastomotic status, a new method which determines the dimension of the polishing tool is presented
4 、提出了根據不同成分面形誤差的分佈特徵、進給步距、收斂比和吻合特性要求，確定研拋盤尺寸的新方法；對ccos加工中研拋模運動路徑的規劃進行了深入研究，並給出了相應的工藝流程和技術規范。 -
Iges and step standard format and the sat format which is used in acis has been studied. according to the characters of different parts and the characters of different machine tools, a method of grinding for non - circular surface is researched, a new strategy and algorithm of non - circluar surface nc griding which based on acis is studied. a way of non - circluar surface internal grinding is realized as well as the way of non - circluar surface external grinding
論文的研究包括了以下幾個方面:研究了三維幾何造型引擎acis平臺及其拓撲結構，探討了iges和step等產品數據交換標準格式和acis中的sat文件格式的異同;根據零件的加工特徵和機床的結構特點，研究了在內圓磨削和外圓磨削方式下，非圓曲面磨削的數控編程技術;提出了基於acis實體造型的任意非圓曲面零件的數控磨削新演算法;實現了以實體造型為基礎的任意非圓曲面零件的內圓和外圓數控磨削;根據零件的特徵和磨削方式，生成了相應的走刀路線;實現了針對不同機床的後置處理。
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