拨叉成组车夹具设计及主要零件的工艺编制
摘要：机械加工工艺是实现产品设计，保证产品质量，节约能源，降低消耗的重要手段。本课题研究拨叉成组车床加工工艺规程。首先通过对零件图的分析，了解工件的结构形式，明确了具体的技术要求，从而对工件各组成表面选择合适的加工方法。再拟订较为合理的工艺规程，充分体现质量、生产率和经济性的统一。机床夹具设计是工艺装备设计中的一个重要组成部分，在整个机械加工过程中，夹具除了夹紧、固定被加工零件外，还要求保证加工零件的位置精度、提高加工生产率。本课题在设计的过程当中，深入生产实际，进行调查研究，吸取国内外先进技术，制定出合理的设计方案，在进行具体设计。
关键词：工艺、工序、设计、夹紧、定位
Abstract:Machining process is to achieve product design, to ensure the product quality, save energy and reduce consumption of the important means. The research group of lathe fork processing procedure. Firstly, through the analysis of the drawings, understand the parts of the structure, clear the specific requirements, so as to select the appropriate processing method on the surface of each component. To develop a more rational process of order, fully embodies the unity of quality, productivity and economy. Machine tool fixture design is an important part of the process equipment design, in the whole machining process, fixture clamping, in addition to the fixed parts to be machined, also ensure the position accuracy of machined parts processing, improve productivity. The issue in the design process, in-depth the actual production, conduct research, to learn foreign advanced technology, reasonable design, the detailed design.
Keywords:Technology, process, design, positioning, clamping
目录
序 言...............................................................................................................................5
一 零件的分析...................................................................................................................6
1.1 零件的作用...........................................................................................................6
1.2 零件的工艺分析.................................................................................................7
二. 毛坯的确定..................................................................................................................8
2.1确定毛坯的制造形式............................................................................................8
2.2毛坯形状及尺寸....................................................................................................9
三 拟定加工工艺路线.....................................................................................................10
3.1 基准的选择.........................................................................................................10
3.1.2粗基准选择........................................................................................................10
3.1.2 精基准的选择...................................................................................................11
3.2 制定工艺路线...................................................................................................12
四 零件加工工序设计...................................................................................................13
4.1 铸造.....................................................................................................................13
4.2时效处理..............................................................................................................13
4.3铣下端面..............................................................................................................13
4.4铣上端面..............................................................................................................14
4.5钻，扩，铰Φ20孔.............................................................................................15
4.7粗车Φ54孔及Φ76端面...................................................................................16
4.8精车Φ54孔........................................................................................................17
4.9铣断......................................................................................................................18
五. 夹具设计....................................................................................................................20
5.1 问题的提出.........................................................................................................20
5.2 定位基准的选择.................................................................................................20
5.3 切削力及夹紧力计算.........................................................................................21
5.4 定位误差分析...................................................................................................22
5.5 夹具设计及操作简要说明...............................................................................23
总 结..........................................................................................................................24
致 谢............................................................................................................................25
参 考 文 献....................................................................................................................26
参 考 文 献
1. 切削用量简明手册,艾兴、肖诗纲主编,机械工业出版社出版，1994年
2.机械制造工艺设计简明手册，李益民主编，机械工业出版社出版，1994年
3.机床夹具设计，哈尔滨工业大学、上海工业大学主编，上海科学技术出版社出版，1983年
4.机床夹具设计手册，东北重型机械学院、洛阳工学院、一汽制造厂职工大学编，上海科学技术出版社出版，1990年
5.金属机械加工工艺人员手册，上海科学技术出版社，1981年10月
6.机械制造工艺学，郭宗连、秦宝荣主编，中国建材工业出版社出版，1997年
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