圆柱齿轮减速器下箱体的铣底面夹具设计（有CAD图纸）.pdf

6 I : I Abstract This paper is on the design of cylindrical gear reducer pattern analysis under the case of cylindrical gear machining technology route under the box, also designed according to the requirements of machining fixture. Cylindrical gear reducer main processing content is lower case is the surface and hole. The processing route is long, processing time, high processing cost, the machining precision is high. In accordance with the requirements of the machining process, follow the principle of the surface after the first hole, and the hole and the plane processing clearly divided into roughing and finishing stages of processing to ensure accuracy. Datum selection to the bottom as a rough benchmark, the bottom surface and the two holes as a precision technology base, various process parameters needed to process the machining and processing of the. In the fixture design of parts, mainly according to the requirement of machining process, the number of degrees of freedom analysis should limit, then according to the surface characteristics of components selected location element, then analyze the selected location components can be qualified shall be limited degrees of freedom. Determine the location element also need to select the clamping element, the last is to determine the stru