法兰盘零件机械加工工艺及夹具设计

摘要

法兰盘作为生活中一种常用的零件,它的外形是一个近似盘类的金属块，并在其周围均匀的开通孔用来连接另外的零件，与之匹配的还有垫圈螺栓之类的零件，起到密封以及防止变形的作用，用螺栓起到连接的作用，一般情况下法兰盘都是成对使用的。本次我的毕业论文设计的题目是CK6140车床法兰盘零件的工艺规程和其专用夹具的设计，本文主要内容如下：

首先，我们要对该法兰盘的零件进行分析，包括选用什么样的材质，以及选用该材质运用什么样的制造方法得出，根据法兰盘零件的材质考虑用锻造还是铸造。主要是针对其零件的作用分析以及工艺性分析，通过对该零件认真透彻的分析，则可以了解该工件的基本构造情况，如果想要进一步了解该法兰盘零件的加工表面和加工工艺要求，则需要对其进行工艺分析，接下来就可以按照零件图提出的加工要求来确定毛坯图的尺寸以及要求。

其次，如果要确定该零件加工过程中的粗基准与精基准如何选择，就要对其进行基面的选择。再按照选好的基准，用来确定该工件的加工工艺路线，一般情况下，当加工一个零件的时候，则要制定两种或两种以上的工艺路线，通过比对这两种工艺方案，再根据零件的尺寸精度、几何形状以及位置精度等级的技术分析选择出一条合理的工序路线。

然后，根据上面已经选定好的工序路线，选择合适的机床、量具以及刀具，并计算每一步的切削用量以及加工工时。

最后，设计专用夹具，在设计前先分析零件，之后参考相关的机床夹具手册设计构思出自己的原理来，紧接着设计出夹具方案，该方案既要满足零件的加工精度要求，还要能合理的对工件进行安装、定位以及夹紧；接下来参考零件的技术等级要求，选择出合理且相对应的材料。

在完成了所有的设计以及计算后，运用AutoCAD对其进行二维图形的绘制，并标注相关的尺寸以及技术要求，这样，就可以使读者清楚的了解所讲述的内容。关键词：法兰盘，工艺卡片，零件图，夹具设计

Abstract

Flange as a common parts in life, its shape is a similar to the disk-like metal block, and around its open hole is used to connect other parts, matching with the washer bolts and other parts, plays the seal as well as prevents the distortion the function, uses the bolt to play the connection the function, under the general situation the Flange is used in pairs. The subject of my graduation thesis design is CK6140 lathe flange parts and the design of its special fixture, the main content of this paper is as follows: First, we want to analyze the flange parts, include what kind of material to choose, and what kind of manufacturing method to choose that material to use, according to the material of flange parts to consider forging or casting. It is mainly the function analysis and the craft analysis of the flange part. on the craft analysis to it, then may according to the part drawing the processing request to determine the blank drawing size as well as the request. Secondly, if we want to determine how to choose the coarse datum and the fine datum in the machining process of the part, we should choose the datum. Then, according to the selected datum, the processing route of the flange parts is determined. Usually, two or more processing routes need to be worked out After comparing the two schemes, the best process of the parts. Then, according to the above process has been selected, select the appropriate machine tools, measuring tools and tools, and calculate each step of the cutting amount and processing time. Finally, we design the special fixture for the Flange. When designing the special fixture, we first carefully analyze the machining technical requirements of the part, and then refer to the fixture manual for the machine tool to design the basic principles and methods The Design Scheme of the special fixture is drawn up, and the fitting, positioning and clamping are carried out reasonably under the requirement of the machining precision of the part. After the completion of all the design and calculation, the use of AUTOCAD for its two-dimensional graphics drawing, and mark the relevant size and technical requirements, so that the reader can clearly understand the content.