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毕业设计（论文）

题目：钻模板工艺设计

专 业:机械制造及其自动化 班级: 机制******* 姓 名：**** 指导教师 : ***

毕业时间： 2017年04月

摘要

本次毕业设计是为了让我们能综合运用机械制造工艺学中的基本理论，并结合生产实习中学到的实践知识，独立的分析和解决工艺问题，具备设计一个中等复杂程度零件的工艺规程的能力和运用夹具设计的基本原理和放法，拟定夹具设计方案，完成夹具结构设计的能力，也能熟悉和运用有关手册、图表等技术资料及编写技术文件等基本技能的一次实践。

本设计是一个中等复杂零件的钻模板工艺设计。零件的主要加工表面是平面及孔。一般来说，保证平面的加工精度要比保证孔的加工精度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段以保证孔的加工精度。基准的选择以杠杆 外圆面作为粗基准，以 孔及其下表面作为精基准。先将底面加工出来，然后作为定位基准，在以底面作为精基准加工孔。整个加工过程选用组合机床。在夹具方面选用专用夹具。考虑到零件的结构尺寸简单，夹紧方式多采用手动夹紧，夹紧简单，机构设计简单，且能满足设计要求。

关键词：工艺；夹具；设计

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Abstract

This graduation design is to enable us to comprehensive use of machinery

manufacturing technology basic theory, and combining with the production practice middle school to the practice knowledge, independent analysis and solve process problems and have the ability to process the design of a moderately complex parts and using the basic principle of fixture design and method to design the scheme of the fixture, ability to complete the design of fixture structure, can also be a practice basic skills and familiar with the application of the manual, charts and other technical data and technical documentation etc..

This design is a medium complex parts of the drilling template process design. Parts of the main processing surface is flat and hole. Generally speaking, it is easy to guarantee the machining precision of the plane than the hole. Therefore, the design follows the principle of the first face and the back hole. The machining of the hole and the plane is divided into rough machining and finish machining to ensure the machining precision of the hole. The selection of the datum is based on the external surface of the lever as the coarse datum, and the hole and the lower surface as the precise datum. First, the bottom surface processing, and then as the positioning benchmark, in the bottom of the hole as a fine benchmark. The whole process of the combination of machine tools. In the fixture selection of special fixture. Taking into account the simple structure of the parts of the size, clamping methods are more manual clamping, clamping simple, simple design,

Keywords: plug; machining; programming; process

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目录

第一章前言 ............................................................... 5

1.1 ZM-钻模板国外的发展 ............................................... 5 1.2 ZM-钻模板国内的发展 ................................................ 6 1.3小结 .............................................................. 10 第二章ZM-34钻模板工艺路线的确定 ........................................ 11

2.1 ZM-34钻模板工程图 ............................................... 11

2.1.1 ZM-34钻模板结构特点 ....................................... 11 2.1.2 ZM-34钻模板的工艺分析 ...................................... 12 2.2加工精度分析 ...................................................... 12 2.3 加工方法的确定 .................................................... 13 2.4工艺路线的拟定 .................................................... 13 第三章 ZM-34钻模板各工序规程设计 ....................................... 14

3.1 毛坯的选择 ........................................................ 14 3.2确定机床及装夹方法 ................................................ 15 3.3 工步设计 .......................................................... 15 3.4 钻模板各工序的加工 ................................................ 17

3.4.1加工底面（基准面A） ......................................... 17 3.4.2 加工轮廓 .................................................... 18 3.4.3钻孔 ......................................................... 20 3.5 制作刀具卡片 ...................................................... 21 3.6 制订工序卡片 ...................................................... 22 第四章程序 .............................................................. 24

4.1 程序分析 .......................................................... 24 4.2 程序代码 ......................................................... 24

4.2.1 工序1、2、3程序代码（见附录） .............................. 24

总结 .................................................................... 25 参考文献 ............................................................... 27 致谢 ................................................................... 26

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