车床支架机械加工工艺及夹具设计.doc

本科生毕业论文(设计) 题目: 车床支架机械加工工艺及夹具设计学习中心: 哈尔滨学习中心层次: 专科起点本科_ 专业: 机械设计制造及其自动化年级: __ 2012 年/秋季_ 学号: ___ 学生: 指导教师: 曹小建完成日期: 2014-6-27 车床支架机械加工工艺及夹具设计 I 内容摘要车床作为一种传统的机床,目前在国民生产中占据重要的地位。本人毕业设计的题目是车床尾座体机械加工工艺及车床夹具设计。通过此次设计,进一步熟悉工艺方案的制定原理过程以及车床夹具设计的基本思路。本论文以车床尾座为模板,根据零件的特性,通过分析计算,确定加工基准。在多种方案中选择最优的加工工艺路线,并根据计算所得的余量选择合理的机床进行加工。最后在所有的工序中选择一道工序,做车床夹具设计。根据夹具设计的基本原理,选择合理的夹紧与定位方案,最有效的满足车床夹具的设计要求。关键词:车床尾座;加工工艺;夹具设计车床支架机械加工工艺及夹具设计[键入文字][键入文字][键入文字] 目录内容摘要······························································································ I 目录································································································ II 绪论································································································ 1 1零件的分析······················································································ 2 零件的作用··············································································· 2 工艺性分析: ············································································ 2 以Φ 100H7 为中心的加工表面················································· 2 以底面为中心的加工表面······················································ 3 2工艺规程设计··················································································· 1 确定毛坯制造形式······································································ 1 基准的选择··············································································· 1 粗基准的选择····································································· 1 精基准的选择····································································· 1 制订工艺路线············································································· 1 确定毛坯尺寸············································································· 6 中心孔的加工余量······························································· 6 中心线的加工余量······························································· 6 E、F面的加工余量············································