摘要
 
零件的加工工艺编制，在机械加工中占有非常重要的地位，零件工艺编制得合不合理，这直接关系到零件最终能否达到质量要求；夹具的设计也是不可缺少的一部分，它关系到能否保证加工质量和提高加工效率的问题。因此这两者在机械加工行业中是至关重要的环节。
    铣床在如今机械加工中占的比重越来越大，升降台作为铣床的一个重要组成部分，其加工质量的好坏，将直接影响铣床的加工性能。
加工精度的不断提高，产品质量要求上升，在铣床加工精度相对更高的前提下，铣床的需求量将大幅度上升！
   此次毕业设计的题目是铣床升降台加工工艺与刨燕尾夹具设计，铣床升降台做为一个箱体零件，加工面较多，在制造和设计时考虑到各方面的因素，编制工艺比较繁杂，在制造时因注意各处倒角的大小，特别是在加工内表面时存在一定难度，此零件在加工时分成几个加工面组，依次进行加工，从而减少加工中的错误，减少加工时间。在钻各孔时尽量在一次装夹中采用摇臂钻床来完成。尽量使工序集中来提高生产率。
   在设计刨燕尾槽专用夹具时，为了能降低劳动强度，提高生产率，主要采用两螺栓和两压板对工件进行夹紧，在设计时主要应注意零件的定位。夹具的夹紧力与加工的切削力方向相同，因此加工时所需夹紧力降低，装夹稳定性增加，加工效率提高。
 
关键词：机械加工工艺、升降台、夹具 
Abstract

 
Part of the preparation processing, mechanical processing occupies a very important position, the components in the preparation process is reasonable, this is directly related to the components can eventually meet quality requirements; Fixture Design is an indispensable part of it is closely related to whether we can enhance the processing efficiency. Therefore both the machining industry is a crucial element.
Miller in the machining now account for an increasing proportion of heavy machine lifts as an important component of the The development has a strong sense!
Machining accuracy continues to improve, increase product qualitrequirements in Machining relatively higher precision, under the premise Miller demand will be greatly increased.
Designed to this machine lifts processing and design of peelers mainly Dovetail jig, Miller lifts as a box parts, processing more face in the manufacturing and design, taking into account various factors, preparation process more complicated, and at the time of manufacture for attention throughout the size range, especially in processing inner surface when there is a certain degree of difficulty, This components for the processing of surface processing into several groups, in order for processing, thereby reducing processing errors and reduce processing time. In the drilling of the hole to make full use of a fixture Rocker drilling to be completed. To make the process focus to improve productivity.
In the design of peelers dovetail slot special fixture, as it will reduce the labor intensity, improved productivity, mainly uses two bolts and two platen clamping of the workpiece for the design should pay attention to the major components of positioning. Fixture clamping force of the cutting force and processing the same direction, therefore the processing time required clamping force reduction, and increase the fixture, processing efficiency.
 
Key words : technology, benchmarks, cutting consumption, positioning benchmark positioning error.
  前言

   在机械制造批量生产中，根据加工工件的工艺要求，合理编制工艺和使用夹具是充分发挥机床的作用，保证产品质量，缩短辅助时间，提高劳动生产率，降低生产成本以及减轻劳动强度的重要手段，因此机床夹具在机械制造行业中占有十分重要的地位。
   铣床升降台的设计制造完成后，是通过铸造成形，机械加工各面，使各面满足要求而完成的。铣床升降台在铣床中主要用于安装床鞍，以实现工作台的横身长纵向运动。因此，它有较高的精度和表面粗糙度要求。
   对零件进行工艺编制，使得工人和管理人员对此零件的加工过程有更清晰的认识，从而保证零件的加工质量。
   针对其中一道工序进行专用夹具设计，更能清楚的了解到在制造行业中，对零件分析的重要性，如果没有对零件进行深入的分析，将无法设计出一个合理的夹具。
   本次主要是对铣床升降台加工工艺编制及刨燕尾槽的专用夹具设计，通过这次设计的完成，其目的在于回顾自己大学四年所学的专业知识，提高自身的专业知识的理论水平，在工作之前就有一次自己独自搞一个题目的锻炼，从中提高自己分析问题、解决问题的能力，为以后工作打下一定的基础。
目   录