设计简介
推动架工艺规程及夹具设计
【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 定位方案
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.
Key Words: The process worker one orient the scheme
【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 定位方案
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.
Key Words: The process worker one orient the scheme
目 录
1 绪论 1
1.1 选题的意义...........................................................................................................................................1
1.2 夹具的发展方向...................................................................................................................................1
1.3 本章小结................................................................................................................................................3
2 推动架的加工工艺规程设计 3
2.1 推动架的工艺.................................................................................................................................3
2.1.1 推动架的作用 3
2.1.2推动架的技术要求..........................................................3
2.1.3 推动架的工艺分析 4
2.3 确定毛坯，绘制毛坯简图..............................................................................................................6
2.3.1选择毛坯..................................................................7
2.3.2 绘制推动架毛坯的铸造简图.................................................8
2.4 拟定推动架工艺路线.....................................................................................................................9
2.4.1 定位基准的选择..........................................................10
2.4.2 精基准的选择.............................................................10
2.4.3粗基准的选择.............................................................10
2.5各面、孔加工方法的确定.............................................................................................................11
2.6 加工阶段的划分...........................................................................................................................11
2.7 工序的集中于分散.......................................................................................................................11
2.8 工序顺序的安排...........................................................................................................................12
2.8.1机械加工工序.............................................................12
2.8.2热处理工序...............................................................13
2.8.3辅助工序.................................................................13
3 机床设备及工艺装备的选用............................................................13
3.1 机床设备的选用................................................................13
3.2 工艺装备的选用.................................................................13
4 加工余量、工序尺寸和公差的选用.......................................................14
5 切削用量与时间定额的计算............................................................15
5.1 切削用量的计算...........................................................................................................................15
5.1.1 钻孔工步................................................................16
5.1.2 扩孔工步.................................................................17
5.1.3 粗绞工步.................................................................17
5.1.4 精绞工步.................................................................17
5.2 时间定额的计算...........................................................................................................................17
5.2.1 基本时间Tj的计算........................................................18
5.2.2 辅助时间Tf的计算........................................................18
5.2.3 其他时间的计算...........................................................19
5.2.4 单件时间Tdj的计算.......................................................19
6 夹具设计 20
6.1 问题的提出....................................................................20
6.2 定位方案......................................................................20
6.3 夹紧机构.......................................................................20
6.4 夹具与机床的联接元件...........................................................20
6.5 定位误差分析..................................................................20
6.6 切削力及夹紧力的计算...........................................................20
结论 21
参考文献 22
致谢 22
