大学毕业论文---圆形支座铸造工艺设计.doc

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1、湖南科技大学课程设计课程设计名称：圆形支座铸造工艺设计学生姓名：学院：专业及班级：学号：指导教师：19年月日铸造工艺课程设计任务书一、任务与要求1．完成产品零件图、铸件铸造工艺图各一张，铸造工艺图需要三维建模(完成3D图)。2．完成芯盒装配图一张。3．完成铸型装配图一张。4.编写设计说明书一份(15～20页)，并将任务书及任务图放置首页。二、设计内容为2周1.绘制产品零件图、铸造工艺图及工艺图的3D图(2天)。2.铸造工艺方案设计：确定浇注位置及分型面，确定加工余量、起模斜度、铸造圆角、收缩率，确定型芯、芯头间隙尺寸。(1天)。3.绘制芯盒装配图(1天)。4.绘制铸型装配图、即

2、合箱图(包括流道计算共2天)。5.编制设计说明书(4天)。三、主要参考资料1.张亮峰，材料成形技术基础[M]，高等教育出版社，2011.2.丁根宝， 铸造工艺学上册[M]，机械工业出版社，1985.3.铸造手册编委会，铸造手册：第五卷[M]，机械工业出版社，1996.4.沈其文,材料成形工艺基础(第三版)[M]，华中科技大学出版社，2003.19摘要支座是支撑零部件的载体其主要承受了轴向的压缩作用的机械零件。在日常生产中对支座的选用异常广泛，因为它具有经济型良好、结构稳定性好、结构简单美观实用等特点。本文主要分析了支座的结构，并根据其结构特点确定了铸造工艺，确定了支座的铸造工艺

3、过程，绘制了芯盒装配图，铸造装配图等。关键词：圆形支座；砂型铸造；铸造工艺设计；装配图19目录一、造型材料选择1.铸造合金的选用·····················································12.造型和造芯材料·····················································1二、浇注位置及分型面的确定············································2三、铸造工艺参数设计1.加工余量的选择··································

4、····················52.铸件孔是否铸出的确定················································53.起模斜度的确定······················································54.铸造圆角的确定······················································65.铸造收缩率的确定···················································7196．反变形量············

5、···············································8四、造型方法的设计·····················································8五、木模的设计·························································10六、浇注系统的设计1.浇口杯·····························································122．浇注系统的尺寸·····························

6、·······················12七、冒口的设计·························································14八、铸型装配图设计····················································15心得体会································································17参考文献································································

7、1819一、造型材料选择1.铸造合金的选用灰铸铁的力学性能与基体的组织和石墨的形态有关。灰铸铁中的片状石墨对基体的割裂严重，在石墨尖角处易造成应力集中，使灰铸铁的抗拉强度、塑性和韧性远低于钢，但抗压强度与钢相当，也是常用铸铁件中力学性能最差的铸铁。同时，基体组织对灰铸铁的力学性能也有一定的影响，铁素体基体灰铸铁的石墨片粗大，强度和硬度最低，故应用较少；珠光体基体灰铸铁的石墨片细小，有较高的强度和硬度，主要用来制造较重要铸件；铁素体一珠光体基体灰铸铁的石墨片较珠光体灰铸铁稍粗大，性能不如珠光体