S195柴油机连杆加工工艺及夹具设计

XX 学院

毕业设计(论文)

S195柴油机连杆加工工艺及夹具设计

所在学院 专 业 班 级 姓 名 学 号 指导老师

年 月 日

I

摘 要

本文是对S195柴油机连杆零件加工应用及加工的工艺性分析，主要包括对零件图的分析、毛坯的选择、零件的装夹、工艺路线的制订、刀具的选择、切削用量的确定、加工工艺文件的填写。选择正确的加工方法，设计合理的加工工艺过程。此外还对S195柴油机连杆零件的两道工序的加工设计了专用夹具.

机床夹具的种类很多，其中，使用范围最广的通用夹具，规格尺寸多已标准化，并且有专业的工厂进行生产。而广泛用于批量生产，专为某工件加工工序服务的专用夹具，则需要各制造厂根据工件加工工艺自行设计制造。本论文夹具设计的主要内容是设计加工孔夹具。

关键词：S195柴油机连杆，加工工艺，加工方法，工艺文件，夹具

II

Abstract

This paper is the analysis of technology of automobile connecting parts processing application and processing, mainly including the parts diagram analysis, the choice of blank, parts of the clamping, the craft route formulation, tool selection, the determination of cutting conditions, process documents. Choose the correct methods for processing, processing

process design reasonable. In addition, processing of two processes of automobile connecting rod parts of the design of the fixture.

Many types of machine tool fixture, wherein, universal fixture used the most widely, size has been standardized, and professional factory production. But widely uses in the volume production, specially for a special fixture workpiece machining process service, then needs various manufacturing plant according to the workpiece processing technology to design and manufacture. The main content of this paper is the design of fixture design processing Kong Jiaju.

Key Words: connecting rod, processing technology, processing method, process

documents, fixture

III

目 录

摘 要 ..................................................................................................................................................... II Abstract .................................................................................................................................................. III 目 录 .................................................................................................................................................... IV 第1章 绪论 ........................................................................................................................................... 1 1.1 机械加工工艺概述 ...................................................................................................................... 2 1.2机械加工工艺流程 ....................................................................................................................... 2 1.3夹具概述 ....................................................................................................................................... 3 1.4机床夹具的功能 ........................................................................................................................... 3 1.5机床夹具的发展趋势 ................................................................................................................... 3 1.5.1机床夹具的现状 .................................................................................................................... 4 1.5.2现代机床夹具的发展方向 .................................................................................................... 4 第2章 S195柴油机连杆分析 .............................................................................................................. 6 2.1 S195柴油机连杆零件的作用 ...................................................................................................... 6 2.2零件的工艺分析 ........................................................................................................................... 7 第3章 机械加工工艺规程设计 ......................................................................................................... 9 3.1 生产纲领的确定 .......................................................................................................................... 9 3.2 S195柴油机连杆的材料选择与毛坯的制造方法 .................................................................... 10 3.2.1 S195柴油机连杆的材料选择 ............................................................................................. 10 3.2.2 45钢的成分和力学性能 ..................................................................................................... 11 3.2.3 毛坯的制造方法 ................................................................................................................. 11 3.3 机械加工余量，工序尺寸及毛坯尺寸确定 ............................................................................ 12 3.4 指定工序定位基准的选择 ........................................................................................................ 13 3.5 加工工艺阶段的划分和加工顺序的安排 ................................................................................ 14 3.6 S195柴油机连杆加工工艺过程的拟定 .................................................................................... 14 3.7 连杆加工工艺设计应考虑的问题 ............................................................................................ 15 3.7.1 工序安排 ........................................................................................................................... 15 3.7.2 定位基准 ........................................................................................................................... 15

IV

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