车床后托架的机械加工工艺及夹具设计
车床后托架的机械加工工艺及夹具设计(开题报告,中期检查表,论文说明书12500字,CAD图纸8张)
摘 要:在生产过程中,使生产对象(原材料,毛坯,零件或总成等)的质和量的状态发生直接变化的过程叫工艺过程,如毛坯制造,机械加工,热处理,装配等都称之为工艺过程。在制定工艺过程中,要确定各工序的安装工位和该工序需要的工步,加工该工序的机车及机床的进给量,切削深度,主轴转速和切削速度,该工序的夹具,刀具及量具,还有走刀次数和走刀长度,最后计算该工序的基本时间,辅助时间和工作地服务时间。
关键词:工序;工艺;工步;加工余量;定位方案;夹紧力
Design of Machining Process and Fixture for Back Bracket of The Lathe
Abstract: Enable producing the target in process of production (raw materials, the blank , state of quality and quantity on part become always ) take place direct course of change ask craft course, if the blank is made, machining, heat treatment , assemble etc. and call it the craft course. In the course of making the craft , is it confirm every erector location and worker step that process need this of process to want, the locomotive of processing , this process , and the entering the giving amount of the lathe, cut depth , the rotational speed of the main shaft and speed of cutting, the jig of this process, the cutter and measuring tool, a one hundred sheets of number of times still leaves and a one hundred sheets of length leaves, calculate basic time of this process , auxiliary time and service time of place of working finally.
Keywords: The process, worker one, worker's step , the surplus of processing, orient the scheme , clamp strength
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目 录
摘要……………………………………………………………………………………1
关键词…………………………………………………………………………………1
1 前言 ………………………………………………………………………………2
2 CA6140 机床后托架加工工艺设计…………………………………………………2 [资料来源:www.doc163.com]
2.1 CA6140机床后托架的结构特点和技术要求……………………………………3
2.2 工艺过程设计中应考虑的主要问题……………………………………3
2.2.1 加工方法选择的原则……………………………………………………3
2.2.2 加工阶段的划分…………………………………………………………3
2.2.3 工序的合理组合…………………………………………………………4
2.3 CA6140机床后托架的机械加工工艺过程分析…………………………………5 [资料来源:https://www.doc163.com]
2.3.1 CA6140机床后托架零件图分析…………………………………………5
2.4 CA6140机床后托架的加工工艺路线……………………………………………5
2.4.1 主要工序的加工工艺路线产品…………………………………………5
2.4.2 CA6140机床后托架加工工艺路线的确定………………………………6
2.5 CA6140机床后托架的偏差,加工余量,工序尺寸及毛胚尺寸的确
定…………………………………………………………………………………8 [版权所有:http://DOC163.com]
2.5.1 毛胚的结构工艺要求……………………………………………………8
2.6 CA6140机床后托架的工序设计…………………………………………………9
2.6.1 工序基准的选择…………………………………………………………9
2.6.2 工序尺寸的确定………………………………………………………10
2.6.3 加工余量的确定………………………………………………………10
2.6.4 确定各工序的加工设备和工艺装备 …………………………………11
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2.7 确定切削用量及工时定额 ……………………………………………………12
2.7.1 铣底平面A的切削用量及工时定额……………………………………12
2.7.2 钻、扩、铰、锪孔的切削用量及工时定额……………………………13
3 专用夹具设计 …………………………………………………………………………20
3.1 铣平面夹具设计…………………………………………………………21
3.1.1 研究原始质料……………………………………………………21
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3.1.2 定位基准的选择…………………………………………………21
3.1.3 切削力及夹紧分析计算…………………………………………21
3.1.4 误差分析与计算…………………………………………………22
3.1.5 夹具设计及操作的简要说明……………………………………23
3.2 钻顶面四孔的夹具设计…………………………………………………23
3.2.1 研究原始质料……………………………………………………23
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3.2.2 定位基准的选择…………………………………………………23
3.2.3 切削力及夹紧分析计算…………………………………………24
3.2.4 误差分析与计算…………………………………………………24
3.2.5 夹具设计及操作的简要说明……………………………………25
4 结论………………………………………………………………………………25
参考文献 ………………………………………………………………………………25 [资料来源:http://Doc163.com]
致谢……………………………………………………………………………………26
附录……………………………………………………………………………………26
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