一拖实习报告川大机制.docx

一拖实习报告川大机制.docx

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一拖实习报告川大机制

一拖实习报告（川大机制）

　　目录

　　一生产实习目的和要求··········································２生产实习的目的·········································２生产实习的要求·········································２二一拖简介···················································３三生产实习日程安排···········································４四各生产实习内容·············································５安全教育················································５曲轴制造工艺简介········································６齿轮加工厂参观·······································１１第一动力机械有限公司·································１４第一装配厂···········································１４关于模具的讲座·······································１５汇德工装厂···········································１６工程机械有限公司·····································１７发动机箱体生产线·····································１８第三装配厂···········································１９中铝洛阳铜业有限公司·······························１９中信重工···········································２０燃油喷射有限公司···································２１福莱格车身有限公司·································２１五专题·····················································２３典型零件的工序分析·····································２３两个典型机械结构草图及原理分析·························２５典型夹具草图···········································２６六生产实习心得体会·········································２７　　

　　1/18

　　曲轴制造工艺简介

　　■曲轴的作用

　　1.主要功用：

将活塞的往复运动转变为旋转运动，获得转矩。

2.工作条件：

各种交变应力复杂作用，活塞的压缩比为18~22倍。

3.曲轴的材料：

要求强度、刚度、韧性和耐磨性都比较高的材料，一般用精选的45#钢。

为达到使用要求，曲轴的毛坯采用模锻，然后正火处理获得合适硬度，在精加工之前用中高频淬火。

　　■曲轴构造1．曲轴分类：

　　全支承：

曲轴中每两个连杆颈之间都有一个主轴颈；具有刚度好、成本高、体积大等特点；例如采油机中的曲轴。

　　非全支承：

曲轴中只有一个主轴颈；具有成本低、体积小、刚性低、强度低等特点；例如小型汽油发动机的曲轴。

　　2．曲拐的排列方式：

四缸发动机，曲拐转180°有一个缸做功，转720°每个缸做功一次。

　　2/18

　　3/18

　　■曲轴工艺

　　5．铣两端面，打中心孔

　　10．切4、5侧板，精车C主轴颈15．校直，为磨削作准备20．粗磨C主轴颈

　　25．粗车A、B、D、E主轴颈和前后端，两端顶住，中间轮盘在轴颈C处驱动

　　35．粗磨A、E主轴颈40．粗磨B、D主轴颈

　　45．铣第8侧板定位面，扩轴承孔50．切1、2、8侧板，粗车a、d连杆颈55．切3、4、5、6侧板，粗车b、c连杆颈60．校直65．粗磨4个连杆颈

　　70．精车法兰、油封及凹座侧面80．开四个Φ斜油孔

　　85．在法兰上铣缺口90．在侧板钻4个Φ油孔95．在油孔上扩孔倒角，钻销孔105．在连杆侧板攻丝120．铣回油螺纹140．校直

　　4/18

　　145．去毛刺150．清洗、吹净150J．中间检验

　　155．感应淬火160．校直165．精车轴前端

　　170．半精磨A、E主轴颈175．精磨C主轴颈180．半精磨B、D主轴颈185．精磨A、E主轴颈190．精磨B、D主轴颈

　　195．校直，A、E定位，检查B、D同轴度200．精磨法兰外圆和油封颈205．精磨齿轮轴颈与前端210．精磨法兰端面

　　215．在后端镗、铰轴承孔220．精磨四个连杆颈

　　225．在法兰上钻铰定位孔，钻扩五个螺纹孔并在前端钻孔攻丝

　　230．铣键槽240．磁粉探伤245．装管子

　　5/18

　　目录

　　一生产实习目的和要求··········································２生产实习的目的·········································２生产实习的要求·········································２二一拖简介···················································３三生产实习日程安排···········································４四各生产实习内容·············································５安全教育················································５曲轴制造工艺简介········································６齿轮加工厂参观·······································１１第一动力机械有限公司·································１４第一装配厂···········································１４关于模具的讲座·······································１５汇德工装厂···········································１６工程机械有限公司·····································１７发动机箱体生产线·····································１８第三装配厂···········································１９中铝洛阳铜业有限公司·······························１９中信重工···········································２０燃油喷射有限公司···································２１福莱格车身有限公司·································２１五专题·····················································２３典型零件的工序分析·····································２３两个典型机械结构草图及原理分析·························２５典型夹具草图···········································２６六生产实习心得体会·········································２７　　

　　1/18

　　曲轴制造工艺简介

　　■曲轴的作用

　　1.主要功用：

将活塞的往复运动转变为旋转运动，获得转矩。

2.工作条件：

各种交变应力复杂作用，活塞的压缩比为18~22倍。

3.曲轴的材料：

要求强度、刚度、韧性和耐磨性都比较高的材料，一般用精选的45#钢。

为达到使用要求，曲轴的毛坯采用模锻，然后正火处理获得合适硬度，在精加工之前用中高频淬火。

　　■曲轴构造1．曲轴分类：

　　全支承：

曲轴中每两个连杆颈之间都有一个主轴颈；具有刚度好、成本高、体积大等特点；例如采油机中的曲轴。

　　非全支承：

曲轴中只有一个主轴颈；具有成本低、体积小、刚性低、强度低等特点；例如小型汽油发动机的曲轴。

　　2．曲拐的排列方式：

四缸发动机，曲拐转180°有一个缸做功，转720°每个缸做功一次。

　　2/18

　　3/18

　　■曲轴工艺

　　5．铣两端面，打中心孔

　　10．切4、5侧板，精车C主轴颈15．校直，为磨削作准备20．粗磨C主轴颈

　　25．粗车A、B、D、E主轴颈和前后端，两端顶住，中间轮盘在轴颈C处驱动

　　35．粗磨A、E主轴颈40．粗磨B、D主轴颈

　　45．铣第8侧板定位面，扩轴承孔50．切1、2、8侧板，粗车a、d连杆颈55．切3、4、5、6侧板，粗车b、c连杆颈60．校直65．粗磨4个连杆颈

　　70．精车法兰、油封及凹座侧面80．开四个Φ斜油孔

　　85．在法兰上铣缺口90．在侧板钻4个Φ油孔95．在油孔上扩孔倒角，钻销孔105．在连杆侧板攻丝120．铣回油螺纹140．校直

　　4/18

　　145．去毛刺150．清洗、吹净150J．中间检验

　　155．感应淬火160．校直165．精车轴前端

　　170．半精磨A、E主轴颈175．精磨C主轴颈180．半精磨B、D主轴颈185．精磨A、E主轴颈190．精磨B、D主轴颈

　　195．校直，A、E定位，检查B、D同轴度200．精磨法兰外圆和油封颈205．精磨齿轮轴颈与前端210．精磨法兰端面

　　215．在后端镗、铰轴承孔220．精磨四个连杆颈

　　225．在法兰上钻铰定位孔，钻扩五个螺纹孔并在前端钻孔攻丝

　　230．铣键槽240．磁粉探伤245．装管子

　　5/18