4三维零件图
摘要
专用夹具在现在的机械加工过程中发挥着重要的作用，实现了加工件的定位和夹紧。本次设计研究的对象是弯管机底板支座。主要研究的内容包括弯管机底板支座的加工工艺设计及专用夹具的设计。其中专用夹具设计了钻2-Φ6孔钻床专用夹具。
弯管机主要的作用是对管材进行相应的弯曲，底板支座为弯管机上主要零部件的定位和工作提供支撑。在对加工工艺设计之前，首先完成了零件作用及零件图的分析，确定了零件的生产类型，制造方式及加工余量，绘制毛坯图。设计加工工艺路线，计算工序卡中涉及到的切削用量等。最后，完善了工艺卡及工序卡。
本次加工的零件设计的内容为：确定零件的定位方案（满足6点定位原理）；选择夹紧装置还有夹紧元件；对夹具体进行了设计和确定；为保证零件的加工精度，设计了对刀装置（钻套）；对零件在装夹过程中的夹紧力和切削力进行计算等等。最后，完成专用夹具的夹具装配图还有非标准零件图。
关键词：弯管机底板支座；加工工艺；钻2-Φ6孔；夹具设计
Abstract
The special fixture plays an important role in the present machining process,which realizes the positioning and clamping of theworkpiece. The research object of this design is the base plate support of pipe bender. The main research content includes the processing technology design of the pipe bender base plate support and the design of the special fixture. Special fixture is designed for drilling 2-Φ 6 hole drilling machine.
The main function of the pipe bender is to bend the pipe accordingly, and the base plate support provides support for the positioning andwork of the main parts on the pipe bender. Before the design of processing technology, the function of parts and the analysis of part drawing are completed. The production type, manufacturing mode and machining allowance of parts are determined, and the blank drawing is drawn. Design the processing route, calculate the cutting parameters involved in the process card. Finally, the process card and process card are improved.
The design contents of the parts are: determine the positioning scheme of the parts(meet the 6-point positioning principle); select the clamping device and clamping element; design and determine the clamp; design the tool setting device(drill sleeve) to ensure the machining accuracy of the parts; calculate the clamping force and cutting force of the parts in the clamping process. Finally, complete the fixture assembly drawing of special fixture and non-standard part drawing.
Keywords: pipe bender base plate support; processing technology; drilling 2-Φ 6 hole; fixture design
目录
摘要I
Abstract II
第1章绪论1
1.1本课题研究的目的及意义1
1.2机床夹具的研究现状1
1.3现代机床夹具的发展方向2
第2章零件的机械加工工艺规程设计3
2.1零件的工艺分析及生产类型的确定3
2.1.1零件的作用3
2.1.2零件材料的分析4
2.1.3零件表面结构的分析4
2.1.4零件加工要求的分析4
2.1.5零件形位公差的分析4
2.1.6零件生产类型的确定5
2.2零件工艺规程设计5
2.2.1零件制造形式的确定5
2.2.2基准的选择6
2.3选择、比较和确定加工工艺路线6
2.3.1选择加工工艺路线7
2.3.2比较加工工艺路线8
2.3.3确定加工工艺路线8
2.4加工设备、夹具、刀具及量具的确定8
2.5机械加工余量的确定9
2.6确定切削用量及基本工时11
第3章钻床专用夹具的设计24
3.1确定定位方案，选择定位元件24
3.2确定夹紧方案，选择夹紧元件25
3.3夹具体的设计25
3.4对刀装置的选择25
3.5钻削力及夹紧力计算25
3.6定位误差分析26
第4章加工程序编制及仿真加工27
4.1数控编程的分类27
4.2数控编程27
4.2.1创建几何体28
4.2.2创建刀具30
4.2.3面铣削加工操作30
4.2.4型腔铣加工设置33
4.3仿真加工及后处理35
结论41
致谢42
参考文献43
钻2-Ф6孔夹具装配图A0
弯管机底板支座零件图A2
弯管机底板支座毛坯图A2
钻2-Ф6孔夹具体A1
钻2-Ф6孔钻模座A3
1字数
2摘要
3设计所包含文件
5目录
6夹具设计部分
7加工综合卡片
8加工过程卡
