文档介绍：目录
摘要·····················································2
Abstract·················································3
1、零件图工艺性分析······································4
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2、毛坯选择··············································6
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、铸件尺寸公差:············································6
、铸件机械加工余量·········································6
、主要毛坯尺寸及其公差·······