机械工艺夹具毕业设计243专用镗床夹具设计

题目：专用镗床夹具设计

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专业：机械设计

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专用镗床夹具设计

摘要

机床夹具是机械加工工艺系统的重要组成部分，是机械制造中的一项重要工艺装备。机床夹具在机械加工中起着重要的作用，它直接影响机械加工的质量、生产率和生产成本以及工人的劳动强度等。因此机床夹具设计是机械加工工艺准备中的一项重要工作。

在专用夹具的设计中，根据设计任务主要就连杆、泵体的装用镗床夹具进行了设计，完成了对夹具用的定位件、导向件对刀件、导引件等夹具中用到的零件的设计，并用Soidworks进行了三维建模。夹具的设计，根据所设计出的工件外形及加工要求，设计出合适的夹具。考虑到泵体的外形较大，故应在选用夹具的定位件时使用支承板，而连杆的工件尺寸较小，但加工精度要高。

本文设计的夹具，基本上可以满足工程需要，本文使用的设计方法，也可为同类夹具的设计提供参考。

关键词：镗床夹具；Solid Works；专用夹具；泵体；连杆

Design of Special Boring Fixture

Abstract

Tool fixture machining process is an important component of the system is an important mechanical manufacturing technology and equipment. Tool fixture in machining plays an important role, which directly affect machining quality, productivity and production costs and labor intensity and so on. Therefore, the design of jigs and fixtures machining process is an important work in preparation.

Dedicated fixture design, based mainly on the connecting rod design task, the pump's installation jig boring machine has been designed with complete fixture with the positioning of parts, pieces of guidance documents on the knife, guidance documents and other parts used in fixtures design, and conducted a three-dimensional modeling with Soidworks. Fixture design, based on the design of the workpiece shape and processing requirements, design a suitable fixture. Taking into account the shape of a larger pump, it should be in the selection of the positioning fixture used parts bearing plates, and connecting rod workpiece size smaller, but higher precision.

This fixture was designed to basically meet the engineering needs of the design used in this method can also be designed for similar reference fixture.

Key Words：boring fixture；Solid Works；special fixtures；pμmp；link

目录

摘要 (i)

Abstract........................................................... i i 主要符号表 .. (i)

1 绪论 (1)

1.1研究的目的及意义 (1)

1.2国内外的发展及研究状况 (1)

1.3本课题研究的内容 (2)

1.3.1研究内容 (2)

1.3.2研究意义 (3)

2 镗床夹具设计的基本理论 (4)

2.1夹具设计基本过程 (4)

2.2镗床夹具的基本组成与设计特点 (4)

2.2.1镗床夹具的设计要点 (5)

2.2.2镗床类夹具主要技术条件 (7)

2.2.3镗床规格和主要联系尺寸 (8)

2.2.4镗床类典型刀具 (9)

2.3镗孔加工主要特点 (9)

2.4连杆、泵体工件的典型结构 (10)

2.4.1 连杆的零件结构分析 (10)

2.4.2 泵体零件结构分析 (11)

2.5镗床夹具的典型结构分析 (11)

2.6工件在夹具中的定位 (12)

3精镗连杆小头孔夹具设计 (13)

3.1设计任务 (13)

3.1.1连杆工艺分析 (13)

3.1.2连杆的技术要求 (13)

3.2确定各表面的加工方案 (14)

3.2.1加工方案的拟定 (14)

3.2.2最优方案的确定 (14)

3.3连杆各工序加工余量和毛坯尺寸的确定 (14)

3.3.1毛坯的工艺要求 (14)