壳体工艺及钻4-φ7mm孔夹具设计
壳体工艺及钻4—φ7mm孔夹具设计
摘 要:支撑壳体加工工艺及其钻4-7孔的夹具设计是包括零件加工的工艺设计、加工工序设计及专用夹具设计这三部分。机械加工工艺设计是在机械制造技术等专业课程所学的理论知识上，发挥专业知识解决实际生产问题的一次实践训练。机械制造技术定义：机械的生产过程中，改变生产对象的形状，尺寸，相对位置和性质等使其称为半成品或者成品的工艺过程。以工艺文件的形式确定下来的工艺过程叫做工艺规程。将铸件，锻件毛坯或者钢材经过机械加工的方法，改变它们的形状，尺寸，表面质量，使其称为合格零件的过程，称为机械加工工艺过程。在工艺设计中，要对零件进行了解，了解零件的作用，应用场合，分析它的技术要求，这样可以保证零件的加工质量，还可以提高其生产效率。要研究零件毛培的工艺结构，制定出粗精基准，在设计出对应的加工工艺过程，完成工艺过程卡；然后按照工艺过程卡的要求，测量计算毛培每个工步所需的加工机床设备及其切削用量；然后按照所需加工要求，设计该机床的专用夹具，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；设计的夹具尽量操作方便，加紧稳定，从而改善加工强度来获得更好的经1济效益。
关键词：工艺规程；定位误差；夹紧；加工余量
Abstrct:The processing technology and fixture design support casing drill hole 4- 7 is to include part machining process design, process design and fixture design of the three part. The design of the machining process is the theoretical knowledge learned in the course of mechanical manufacturing technology and other professional, a practice to play professional knowledge to solve practical problems in production. Definition: the production process of mechanical manufacturing technology in the production of machinery, changing the size of the object, the shape, the relative position and the nature make it known as the process of semi-finished or finishedproducts. Process to process documents form of called procedures. The castings,forgings or steel after mechanical processing method, change their shape, size, surface quality, the process is called qualified parts, known as the machining process. In the process of the design, to understand the role of parts parts, understanding, application, analysis of its technology, which can guarantee the quality of parts, but also can improve the production efficiency. Process structure to study and develop the parts of hair, coarse and finebenchmark, in the design process corresponds to the process, complete the process card;then according to the process requirements, processing machine tool equipmentmeasurement and calculation of gross and each step required and cutting parameters; thenaccording to the required processing requirements, special fixture the design of the machine tool, fixture for the various components of the design, such as the connecting part positioning device, clamping device, a guide element, fixture and machine tool fixture design and other components; the operation is convenient and stable as far as possible, to the 1, economic benefit so as to improve the processing intensity to get better.
Keywords: Process planning; positioning error; clamping; machining allowance
目 录
第一章 绪论.................................................................................................................................................1
第二章 零件的分析................................................................................................................2
2.1零件的作用......................................................................................................................................2
2.2 零件的工艺分析.........................................................................................................................2
第三章 工艺规程的分析..........................................................................................................................4
3.1生产纲领和生产类型的确定...................................................................................................4
3.2确定毛坯制造形式......................................................................................................4
3.3毛坯尺寸与机械加工工艺尺寸确定....................................................................5
3.3.1加工余量的确定...................................................................................5
3.3.2工序尺寸及其公差的确定........................................................................................6
3.4基准的选择.........................................................................................................................................7
3.4.1基准的概念......................................................................................................................7
3.4.2定位基准的选择原则....................................................................................................8
3.5确定各表面加工方案......................................................................................................................9
3.6工艺路线的制定.................................................................................................................................9
3.7切削用量的选择...............................................................................................11
第四章 车床夹具设计.............................................................................................................................19
4.1概论..................................................................................................................................................19
4.2问题的提出........................................................................................................20
4.3定位方案与定位元件的设计...............................................................................................21
4.4夹紧方案............................................................................................................................21
4.5切削力和夹紧力计算..............................................................................................................21
4.6定位误差分析计算.....................................................................................................22
致谢..............................................................................................................................................................25
参考文献......................................................................................................................................................26
附录........................................................................................................................27
附件1：毕业设计（论文）指导记录表……......………..........................................................................27
附件2：用人单位毕业设计鉴定表……......………..............................................................................28
参考文献
[1]吴慧媛：零件制造工艺与装备 [M].北京：机械工业出版社，2011-8
[2]姜敏凤：工程材料及热成型工艺[M].北京：高等教育出版社，2013-3
[3]姚民雄：机械制图[M].北京：电子工业出版社，2012-7
[4]赵如福：金属机械加工工艺人员手册[M].上海：上海科学技术出版社，1992-12
[5]艾 兴：《切削用量手册》[M].北京：机械工业出版社，1985
[6]李益民：《机械制造工艺设计简明手册》[M].北京：机械工业出版社，1994
[7]陈超祥：《UGNX9.0机械设计教程》[M].北京：机械工业出版社，2010
[8]阳尧端：《机械设计课程设计》[M].北京：复旦大学出版社，2012
[9] 朱耀祥：《现代夹具设计手册》.北京：机械工业出版社，2010
[10] 王建石：《机床夹具和辅具速查手册》.北京：机械工业出版社，2007
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