【正文】 Abstract The axis is poses the machinery the important ponents, also is in the machinefinishing one of mon typical supports other rotors to rotate and to transmit the torque, simultaneously through bearing and machine rack in the vocational school machinefinishing practicum, the axis class ponents processing is the student practices the turning skill the most basic also most important project, but the student finally finishes the work piece quality very not to be always ideal, the process analysis mainly is the student countershaft class ponents craft analysis technological process making insufficiently is reasonable. In the axis class ponents the technological process making, relates the work piece quality, the labor productivity and the economic efficiency may have several different processing methods, but only then some one kind reasonable, in the making machinefinishing technological process, must pay attention to following several. 1. detail drawing craft analysis, must understand ponents specifications and so on unique feature, precision, material quality, heat treatment, also need to study the product assembly drawing, the part assembly drawing and the approval standard. 2. cementation processing craft route is generally: The yummy treats fing fire rough machining semifinishing cementation decarbonization processing (to does not have to enhance degree of hardness part) the quenching cutting thread, the drill hole or the milling rough grinding low temperature effectiveness half correct grinding low temperature effectiveness correct grinding. 3. thick datum choices: Has the nonprocessing surface, the elected nonprocessing surface takes the thick axis all must process which to all surfaces, adjusts according to the processing remainder smallest the choice smooth smooth surface, makes way the runner the reliable reliable surface is the thick datum, simultaneously, the thick datum cannot duplicate uses. Keywords: Craft analysis； datum choice； craft route； roughness 目 錄 引 言 .................................................................................................................................................. 4 第一章 零件的分析 ...................................................................................................................... 2 零件 的作用 ............................................................................................................................ 2 零件的工藝分析 .................................................................................................................... 4 第二章 確定毛坯及加工余量 ................................................................................................... 9 第三章 零件的工藝安排 ........................................................................................................... 12 定位基準的選擇 .................................................................................................................. 12 制定工藝路線 .............................................................................................