连杆加工工艺规程及夹具设计+CAD图纸+工序卡
毕业论文关键词： 连杆、工艺规程、夹具设计、尺寸精度、形位精度
Abstract： There are four sections in the design.
To consult many books on the same design,to analysis the movement and function of the connecting rod,to know the processing requirement of the workpiece,for example,dimensional precision、accuracy of form and position、heat treatment,to fix the material of the workpiece.
To draw up the line of the processing technic,to consult a lot of manuals and data on the same design,to process calculation of the working position,to fix the machine tools and cutters,to check the power of the machine tools.
To design special fixture of some process,to fix the type of organization and concrete structure,to draw the installation diameter、part drawings of the fixture,to draw the installation diameter、the part drawing and the blank drawing of the workpiece,to write instructions of the fixture.
To translate foreign literatures on the same design,to fill out travel charts,to write design instructions.
Keywords: Connecting rod；engineering procedure；the design of the fixture；dimensional precision；accuracy of form and position
目录
1 连杆机械分析 1
1.1 连杆的作用 1
1.2 连杆的工艺分析 1
1.2.1 连杆材料的选择 1
1.2.2 尺寸精度分析 2
1.2.3 形状精度分析 2
1.2.4 位置精度分析 2
2 连杆加工工艺规程的制定 3
2.1 工艺的基本概念 3
2.2 定位基准的选择 3
2.2.1 粗基准的选择 3
2.2.2 精基准的选择 3
2.2.3 基准的确定 4
2.3 加工余量的确定 4
2.4机械加工工艺路线的拟订 5
2.4.1 工艺路线 5
2.4.2 工艺方案的分析 7
2.5 连杆工艺计算 7
2.5.1 粗铣两平面 7
2.5.2 粗磨两平面 9
2.5.3 钻小头孔 11
2.5.4 粗镗小头孔 12
2.5.5 车大头外圆 13
2.5.6 粗镗大头孔 15
2.5.7 粗铣螺栓孔端平面 15
2.5.8 精铣螺栓孔端平面 16
2.5.9 铣开连杆大头 17
2.5.10 精铣体、盖分开面 17
2.5.11 钻扩铰螺栓孔 17
2.5.12 精磨体、盖分开面 19
2.5.13 精磨两端平面 21
2.5.14 精镗小头孔 21
2.5.15 粗镗大头孔 22
2.5.16 精镗大头孔 22
2.5.17 精镗小头孔 22
2.6 夹具设计 23
2.6.1 夹具分析 23
2.6.2 夹具设计 23
2.6.3 确定定位方案 23
2.6.4 夹具设计相关计算 23
2.6.5 定位误差分析 23
2.6.6 夹具的使用 23