某摩托车壳体零件工艺规程及工艺装备的设计（1）（本科毕业论文设计）.doc

摘要

摩托车是一种应用广泛、快速、经济、舒适的交通工具，它具有自行车的灵活性、轻便性，也有汽车的机动性和高速性。在中小城市，它是一种广泛应用的交通工具。
本文主要介绍摩托车发动机壳体零件的机械加工工艺规程和工艺装备的设计过程。机械加工工艺规程是规定零件机械加工工艺过程和操作方法等的工艺文件，它是指挥现场生产的依据，是进行有关的技术准备和生产准备的依据。本文所提的工艺装备主要是指夹具，它是安装在机床上用于工件定位和夹紧的工艺装备。
本次设计的主要内容包括：根据摩托车发动机壳体零件技术要求，确定该零件的生产类型、并对零件进行工艺分析、确定毛坯的制造方式、选择定位基准并拟订工艺路线、确定各工序的设备及工艺装备、确定重要工序的加工余量和工序尺寸、确定切削用量和工时定额。最后，重点设计了该壳体零件加工工艺过程中的两道主要工序的夹具。


关键词：壳体零件，机械加工工艺规程，夹具设计, CAD

ABSTRACT

Motorcycle is a broad, rapid, economic and comfortable means of transport. It has the flexibility of a bike, also has the mobility and high-speed of the car. In the medium and small cities, it is a widely used means of transport.
This article main introducts motorcycle motor body components machine-finishing technological process and craft equipment designing process. The machine-finishing technological process is the document stipulating part machine work procedure and the operating method handicraft. It commands the basis produced live, carries on the basis about preparing and producing and preparing in technology. Craft equipment this text proposed mainly refers to the jig, which is installed in the machine parts used for positioning and clamping the technique and equipment.
The main content of this text includes: According to the motorcycle engine shell part technical requirement, confirm the production type of this part, carry on craft analysis to the part, confirm the manufacture of the blank, choose to orient basis and work out the craft route, confirm every process of apparatus and crafts equip, confirm important processing surplus and process size of process, and confirm that cuts consumption and hour norm, finally, has designed two main jig with emphasis this shell components processing technological process.


Key words：shell components, machine-finishing technological process, jig design, CAD

目 录

中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1 论文的目的和意义 1
1.2 课题研究的任务 1
1.3 论文的主要工作 1
2 机械加工工艺规程设计 2
2.1 零件分析 2
2.1.1零件的结构特点及功用 2
2.1.2零件的主要技术要求 2
2.1.3零件的结构工艺性分析 4
2.2 零件毛坯选择 6
2.2.1零件的毛坯材料 6
2.2.2毛坯制造方法 8
2.2.3铸造方法的特点和适用范围 10
2.2.4浇注位置的选择 13
2.2.5毛坯分型面的选择 13
2.2.6毛坯拔模斜度 14
2.2.7毛坯精度等级和加工余量选择 14
2.3 机械加工路线的制定 15
2.3.1定位基准的选择 15
2.3.2加工方法的选择 17
2.3.3工艺路线的拟定 21
2.4 工序设计 25
2.4.1加工余量几及工序尺寸的确定 25
2.4.2确定重要表面加工的工艺装备、切削时间及工时定额 27
3机床夹具设计 34
3.1 概述 34
3.2 夹具设计方法与步骤 34
3.2.1专用夹具设计概述 34
3.2.2工序15：粗铣A面的专用夹具设计 37
3.2.3工序45：粗镗ф40孔的专用夹具设计 40
4 结语 44
致谢 45
参考文献 46