发动机前轴承座零件工艺规程及工装设计工 学 部 计算机学院专 业机械设计制造及其自动化班 级B742112学 号B74211229姓 名指导教师卢永扬负责教师沈阳航空工业学院2011 年 6 月沈阳航空航天大学毕业设计（论文）I摘摘 要要本文论述了飞机发动机前轴承座零件机械加工工艺规程和专用夹具的设计过程。主要内容包括以下两个方面：首先，在对前轴承座零件图进行工艺分析，了解零件工作条件、材料的切削加工性基础上编制工艺规程。这其中包括毛坯的设计、主要表面的加工精度的保证、工序尺寸的确定、工序余量和公差以及有关工序机床、刀具、量具、夹（模）具的选择。其次是专用车床和铣床夹具的设计。主要包括总体设计方案确定，定位、夹紧元件的选择，夹具的设计，夹具定位误差计算等内容。关键词：前轴承座；工艺分析；工艺规程；专用夹具。沈阳航空航天大学毕业设计（论文）IIAbstractThe present paper elaborated the process planning of manufacturing operation for airplane engines bearing seat as well as the typical special fixtures design.This article is filled with the below two parts. Firstly, the process planning was designed which was based on ability of the part of drawing, the part of working condition, cutting capacity of the material and so on. It includes the blank designing, surfaces quality precision assurance of the critical surfaces, the dimension determination, the dimensional stock and tolerance of the working operation as well as the related choice of the machine tool, the cutting tool, the measuring tool and component clamps.Secondly, a lathe fig unit and a milling clamp were designed. The fixtures structure illustration design, the choice of position and fastening elements and the calculation of machining error were described in detail in the book.Keywords: Anterior bearing seat. Machining analysis. Technological procedure. Special fixtures.沈阳航空航天大学毕业设计（论文）III目目 录录1 第 1 级标题.11.1 第 2 级标题 .11.1.1 第 3 级标题.11.1.2 第 3 级标题.21.2 第 2 级标题 .21.2.1 第 3 级标题.31.2.2 第 3 级标题.31.2.3 第 3 级标题.41.3 第 2 级标题 .42 第 1 级标题.52.1 第 2 级标题 .52.1.1 第 3 级标题.52.1.2 第 3 级标题.62.2 第 2 级标题 .62.2.1 第 3 级标题.62.2.2 第 3 级标题.72.2.3 第 3 级标题.72.3 第 2 级标题 .83 第 1 级标题.93.1 第 2 级标题 .93.1.2 第 3 级标题.103.1.3 第 3 级标题.103.2 第 2 级标题 .113.2.1 第 3 级标题.113.2.2 第 3 级标题.123.3 第 2 级标题 .123.3.1 第 3 级标题.12沈阳航空航天大学毕业设计（论文）IV参考文献.13致 谢.