文档包括:
word说明书一份，共32页，约12000字
任务书一份
开题报告一份
PPT答辩一份

CAD版本图纸，共6张
工序卡一套
过程卡一套

摘  要

本毕业设计课题是制订S195型柴油机发动机连杆零件的机械制造工艺规程及粗镗大头孔夹具设计，目的是

希望能在降低产品的生产成本的同时又可以制造出品质优良的产品，在最少的工序或加工时间中制造出满

足形状、尺寸、精度、表面粗糙度等要求的产品。设计应在保证加工精度的同时，又利用工件装卸的合理

夹具结构，并有一定实用价值。由于理论知识与实践经验的有限。我将考虑采用普遍性强的加工方法，但

该零件的机械加工工艺规程可以适当采用较为先进的制造工艺方法和专用机床设备，刀具和量具。本课题

的主要内容是分析零件的技术条件画出零件图及毛坯图。拟定合理的工艺路线，粗镗大头孔夹具草图及夹

具图。本设计采用了连杆体与连杆盖分离锻造，并制定相对合理的工艺路线。在夹具设计部分，以大小头

孔端面、大头孔工艺凸台及小头孔为定位基准，符合定位原理并达到定位目的，夹紧机构则采用螺旋夹紧

机构，亦即达到夹紧效果。

关键词: 连杆；工艺规程；夹具设计；CAD图

Abstract

The graduation design topic is formulating S195 diesel engine connecting parts manufacturing

procedure and boring head hole fixture design, want to reduce production cost in the also can

produce good quality products at least, the process of manufacturing and processing time meet

the shape, size, accuracy and surface roughness and requirements of the product. Design

should guarantee the machining accuracy of workpiece loading and unloading, and use of

reasonable fixture structure, and has certain practical value. Due to the theoretical

knowledge and practical experience. I will consider using universal stronger processing

method, but the machining procedure can appropriate USES advanced manufacturing technology

and special machine equipment, tools and measuring tool. The main content of this project is

to analyze the technical conditions of the parts and painted parts blank. The plan was

reasonable process route, big hole clamp sketches and boring fixture. This design USES the

connecting rod body and connecting separated, and formulate relative reasonable forging

process. In part, the size of fixture design with head big hole hole surface, small head for

convex and locating datum, and achieve the goal orientation positioning principle, clamping

mechanism using spiral clamping institutions, i.e. reached clamping effect.

Key words: Connecting rod, Procedure, Fixture design, CAD drawings

目   录

中文摘要 1
英文摘要 1
引    言 2
1零件分析 3
 1.1零件的功用 3
 1.2零件的技术分析 3
 1.3零件的工艺分析 3
2工艺规程的编制及参数的确定 5
 2.1确定毛坯的制造形式 5
 2.2基准面的选择 5
 2.3 制定工艺路线 6
3确定机械加工余量，工序尺寸及毛坯尺寸 10
4确定切削用量及基本工时 12
5夹具设计 28
 5.1问题提出 28
 5.2夹具设计 28
  5.2.1定位基准的选择 28
  5.2.2切削力及夹紧力计算 28
  5.2.3夹紧装置的选择与设计 29
  5.2.4夹具零件的设计 30
  5.2.5夹具体的设计 30
结    论 31
参考文献 32
致    谢 33