1三维零件图
拖拉机LT三孔连杆体数控工艺及编程设计
摘要
连杆是很多机械中的主要部件之一，例如在汽车发动机中有重要的作用。本设计主要介绍了普通连杆的加工工艺及其夹具设计。本设计主要内容有普通连杆的作用、选材、毛坯的制造方法、连杆的技术要求、加工工艺路线的制定、加工设备的选择，刀具、量具，切削用量的选择计算等，并设计出一套加工连杆的的专用夹具，最终达到零件的技术要求。通过制定连杆加工工和设计夹具为工人加工连杆提供了依据。而我要设计的三孔连杆工艺规程的设计是从零件图开始对零件的加工工艺进行了分析，并通过查表、计算对毛坯材料、制造方法等进行选择确定。然后根据定位基准的选择原则和所要求的加工精度，确定加工基准和加工方法。并最终确定加工工艺路线。参阅有关技术手册计算确定三孔连杆的机械加工余量、工序尺寸和毛坯尺寸并绘制出了毛坯图，计算其相关加工工序的切削用量并制作了加工工序卡片。最后，确定加工机床和工艺装备，并对专用夹具进行设计。
关键词：三孔连杆；加工工艺；工装设计
Abstract
The connecting rod is one of the main parts of car engines, and it plays an important role in the car engines. The text mainly tells us the processing technology and the design of clamping device ofvehicle engine connecting rod. The text include the function, selecting the material, the method of manufacturing the rough, the technical requirements, designing the processing route, selecting the equipments, the tools, the measuring instruments, calculating the cutting dosages, and then design the clamping device ofvehicle engine connecting rod. At last, it can meet the technical requirements of the connecting rod. It can provide the basis to theworkers according to formulating the processing technology and designing clamping device ofvehicle engine connecting rod. From the start of thework diagram, thework of the processingwas analysed. Through the look-up table and calculation,blank materials, manufacturing methodswas selected.The basewas choice. Then according to the principle of datum reference and requirement of design precision,we determined the processing standards and processing method,and ultimately determine processing route. Refer to the related technical manuals,machining allowance, procedure sizes and blank dimensionwas determined, blank drawingwas drawn. Then, calculate cutting dosages of the related processes and make proces sheets. Finally, chose the processing machine and process equipment and design special fixure.
Keywords: Three holes connecting rod; processing technology; jig design
目录
摘要I
Abstract II
第一章引言1
第二章三孔连杆的设计2
2.1三孔连杆零件图介绍2
2.2零件的工艺分析3
2.3毛坯的选择3
2.3.1选择毛坯时应考虑的因素4
2.4选择毛坯4
2.5确定毛坯的制造流程，确定毛坯的形状5
2.6确定毛坯的尺寸公差和机械加工余量6
2.7绘制锻件毛坯简图8
第三章机械加工工艺规程的制定8
3.1定位基准的选择8
3.1.1粗基准的选择9
3.1.2精基准的选择10
3.2零件表面加工方法的选择12
3.3加工顺序的安排13
3.3.1工序安排需遵循的原则13
3.3.2加工阶段的划分14
3.3.3工序顺序的安排14
3.3.4确定工艺路线15
3.4加工余量、工序尺寸的确定16
3.4.1加工余量与工序余量16
3.4.2加工余量与工序尺寸的确定17
3.5切削用量的确定、基本时间的计算18
3.5.1工序6 18
3.5.2工序13 20
3.6机床工艺装备的确定21
3.7机床设备的选择21
3.8工艺装备的选择22
3.8.1夹具的选择22
3.8.2刀具的选择23
3.8.3量具的选择23
第四章UG造型编程及加工23
4.1三维造型23
4.2数控加工编程28
4.2.1连杆的凹槽的数控加工编程28
设计结语32
致谢34
参考文献35
工序卡片
过程卡片
毛坯图
三孔连杆零件图
2字数
3摘要
4设计所包含文件
