基于SOlidworks的机床夹具设计教程.doc

Ⅲ Ⅳ 2604130359 摘 要 “钳块加工工艺及专用夹具设计”这个题目顾名思义，分为两个部分，一个是针对活动钳块的加工工艺，另一方面就是针对这个尺寸的钳块设计出一个专门的夹具，这要求我们四年所学知识的集中应用。 在这个设计中，首先明白钳块是什么？有什么作用？为此，我专门做了零件分析，它的特点，要求，需要加工的地方，以及技术要求等等，在加工材料方面我选择了灰口铸铁，因为它的力学性能好，价格不高，且容易获得，我根据目标零件的尺寸，我制订了74×64×32的毛坯，再结合基面先行，先粗后精，先主后次，先面后孔的原则也为了减少装卸次数制订了如下加工工艺过程： 铸造——实效——涂底漆——粗铣上表面——粗铣下表面——粗铣左端面——钻φ20的孔—— 钻M10螺纹孔的底孔——半精铣下表面—— 扩φ20H8的孔—— 扩φ28的孔；——铰φ20H8的孔——攻M10的螺纹 在整个加工工艺中，面的加工我选择XA6132铣床，对于孔的加工我选择了Z3040钻床，对刀具的选择，主轴转速，进给速度，背吃刀量按照自己的思路，逐一做了列举计算，详细请看工艺分析过程和工艺卡片。 对于夹具的设计，应当满足加工工件能够方便夹持，能够满足工件的大规模生产，且结构不太复杂，结合加工工艺对其做好夹紧力的计算，力学校核，和定位分析的基础上设计夹具，画出相应的二维三维图，整理好后请老师查阅。顺利完成毕业答辩。 关键字： 工艺；夹具；计算；分析 Abstract This topic clamp block processing technology and special fixture design as the name implies, is divided into two parts, one is the process of active clamp block, on the other hand is the size of the clamp block to design a special fixture, focused on the application of the requirements of our four years of knowledge. In this design, first understand clamp block is what? What effect is there? Therefore, I made the analysis of requirements of parts, its characteristics, needs, processing areas, as well as the technical requirements and so on, in the process I chose the materials of cast iron, because of its good mechanical performance, the price is not high, and easy to get, I according to the target part size, I made 74 * 64 * 32 blank, combined with the base first, coarse to fine, after the first primary time, the surface after the first hole principle in order to reduce the loading and unloading times for the following process: Casting -- effectiveness -- primer -- rough milling surface -- rough milling surface -- rough milling left end -- hole drilling drill φ 20 -- M10 threaded hole bottom -- half precision milling surface -- expansion of φ 20H8 φ 28 hole -- expanding holes; threads -- hinge hole and φ 20H8 -- M10 In the whole process, the machining I choose XA6132 milling machine for the machining of the hole, I chose the Z3040 drilling machi