车床尾座套筒加工工艺及夹具设计

陕西工业职业技术学院毕业设计(论文)

车床尾座套筒加工工艺及钻4孔夹具设计

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指导老师

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摘要

本文是对车床尾座套筒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钻中心孔夹具。

关键词：

车床尾座套筒，加工工艺，加工方法，工艺文件，夹具

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Abstract

This paper is on the bracket parts processing application and processing technology and analysis, including the parts of the plan, the choice of blank, the clamping, the craft route making, tool selection, the determination of cutting conditions, processing documents. Choose the correct processing methods, design the reasonable process. In addition to the stuffing box cover part two process designing special fixture.

Machine tool fixture of many kinds, among them, the most widely used common fixture, size specifications have been standardized, and a professional production plant. While widely used in batch production, specially for a work piece processing services for the fixture, it needs each factory according to workpiece machining technology to design and manufacture. In this paper, fixture design are the main contents of design of fixture for grinding center.

Key words: scaffold, processing technology, processing method, process documentation, fixture

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目录

摘要 (2)

ABSTRACT (3)

前言 (5)

第1章序言 (5)

1.1机械加工工艺概述 (5)

1.2机械加工工艺流程 (6)

1.3夹具概述 (7)

1.4机床夹具的功能 (7)

1.5机床夹具的发展趋势 (8)

1.5.1机床夹具的现状 (8)

1.5.2现代机床夹具的发展方向 (8)

2 零件的分析 (10)

2.1零件的工艺分析 (10)

3零件的工艺要求 (10)

3 工艺规程设计 (11)

3.1加工工艺过程 (11)

3.2确定各表面加工方案 (11)

3.2.1影响加工方法的因素 (11)

3.3加工方案的选择 (12)

3.3确定定位基准 (12)

3.2.1粗基准的选择 (12)

3.2.1精基准选择的原则 (13)

3.4工艺路线的拟订 (13)

3.4.1工序的合理组合 (14)

3.4.2工序的集中与分散 (14)

3.4.3加工阶段的划分 (15)

3.4.4加工工艺路线方案的比较 (16)

3.5零件的偏差，加工余量，工序尺寸及毛坯尺寸的确定 (17)

3.5.1毛坯的结构工艺要求 (18)

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3.5.2零件的偏差计算 (18)

3.6确定切削用量及基本工时（机动时间） (19)

3.7时间定额计算及生产安排 (27)

第4章钻中心孔夹具设计 (29)

4.1概述 (29)

4.2方案设计 (29)

4.3定位基准的选择 (29)

4.4切削力和夹紧力的计算 (29)

4.5定位误差分析 (30)

4.6导向装置设计 (30)

4.7夹具设计及操作说明 (31)

第5章铣底面夹具设计······························································错误!未定义书签。

5.1设计要求···························································································错误!未定义书签。

5.2夹具设计···························································································错误!未定义书签。

5.2.1 定位基准的选择 ··········································································错误!未定义书签。

5.2.2 切削力及夹紧力的计算 ·································································错误!未定义书签。

5.3定位误差的分析··················································································错误!未定义书签。

5.4夹具设计及操作的简要说明...................................................................错误!未定义书签。结论 (31)

参考文献 (33)

致谢 (34)

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