改后毕业设计说明书拜拜拜拜吧概览.doc

湖南科技大学毕业设计说明书 1 目录摘要·· ··························································································································· ····························· 1前言· ··························································································································· ······························· 41 零 件的分析······························································································································ ·········· 零 件的作用··························································································································· ········· 零 件的工艺分析···························································································································· 52 工 艺规程的设计······························································································································ · 毛 坯的制造形式···························································································································· 6 基 准面的选择··························································································································· ····· 粗 基准的选择······················································································································ 6 精 基准的选择······················································································································ 6 制 定工艺路线······························································································································ ·· 机 械加工余量、工序尺寸及毛坯尺寸的确定············································································ 8 湖南科技大学毕业设计说明书 2 确 定切削用量及基本工时············································································································ 8 3 绘 制零件图和编制工艺卡············································································································ 26