　毕业设计(论文)-CA6140拨叉工艺规程设计.docVIP

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2016-11-25 发布于浙江
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　毕业设计(论文)-CA6140拨叉工艺规程设计.doc

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　毕业设计(论文)-CA6140拨叉工艺规程设计

PAGE 26 目录前言···························································································································································4 1 零件的分析········································································································································5 1．1 零件的作用····································································································································5 1．2 零件的工艺分析····························································································································5 2 工艺规程的设计·······························································································································6 2．1 毛坯的制造形式····························································································································6 2．2 基准面的选择································································································································6 2．2．1 粗基准的选择······················································································································6 2．2．2 精基准的选择······················································································································6 2．3 制定工艺路线································································································································6 2．4 机械加工余量、工序尺寸及毛坯尺寸的确定············································································8 2．5 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 3．1 绘制零件图···································································································································26 3. 2 编制工艺文件·········································································