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1、摘 要工艺学是以研究机械加工工艺技术和夹具设计为主技术学科，具有很强的实践性，要求学习过程中应紧密联系生产实践，同时它又具有很强的综合性， 本次毕业设计的课题是轴承盖加工工艺规程及夹具设计主要内容如下：首先，对零件进行分析，主要是零件作用的分析和工艺分析，通过零件分析可以了解零件的基本情况，而工艺分析可以知道零件的加工表面和加工要求。根据零件图提出的加工要求，确定毛坯的制造形式和尺寸的确定。第二步，进行基面的选择，确定加工过程中的粗基准和精基准。根据选好的基准，制订工艺路线，通常制订两种以上的工艺路线，通过工艺方案的比较与分析，再选择可以使零件的几何形状、尺寸精度及位置精度等技术要求得到合理的
2、保证的一种工序。最后，根据已经选定的工序路线，确定每一步的切削用量及基本工时，并选择合适的机床和刀夹具。对于粗加工，还要校核机床功率。然后把设计的过程整理为图纸。通过以上的概述，整个设计基本完成。关键词： 机械；加工工艺；夹具设计全套图纸，加ABSTRACT A specialized main specialized course that mechanical manufacturing engineering is studied is machinery , rely mainly on studying machining technology and jig to design t
3、echnological discipline , have very strong practicality , require that should contact production practices closely in the learning process, at the same time it has comprehensive the very strong one, The subject of this graduation project is that CA6140 lathe ring flange processing technology rules a
4、nd special-purpose jig of a certain process are designed, the main content is as follows: First of all, analyse , it is mainly analysis of the function of the part and craft analysis to the part , through part analyse can find out about basic situation of part, and craft analyse may know the process
5、ing surface of the part and is it require to process. The processing demand put forward according to the part picture, confirm the manufacture form of the blank and sureness of the size. The second step, carry on the choice the base , confirm thick datum and precise datum in the processing course. A
6、ccording to the datum chosen , make the craft route , usually make the craft route of more than two kinds, with analysing through the comparison of the craft scheme, and then choosing be able to make such specification requirements as the precision of geometry form , size of the part and precision o
7、f position ,etc. get a kind of process of the rational assurance s. The third step, according to the already selected process route, confirm for every steps of cutting consumption and basic man-hour , choose suitable lathe and cutter. To rough machining , will check the power of the lathe . Finally
8、, design the third process - the jig getting into the hole of the ring flange. Put forward the question of designing first , and then choose to orient the datum , then the calculation that begins to cut strength , clamp strength and analysis of the localization error. Then put the design course in o
9、rder as the drawing. Through the summary of the above, design and finish basically entirely. Keywords: machine; Process the craft; The tongs design目录摘要 .1序言 .21 轴承盖零件的作用 .31.1 零件的作用 .41.2 零件的工艺分析 .42 工艺规程设计 .62.1 确定毛坯的制造形式 .62.2 基准的选择 .62.3 工艺路线的制定 .72.4 机械加工余量及毛坯尺寸的确定 .72.5 确定切削用量及基本工时 .83 夹具设计 .213.2 铣两侧平面夹具 .233.2.1 问题的提出 .213.2.2. 定位基准的选择 .213.2.3. 切削力及夹紧力的计算 .213.2.4. 定位误差分析 .213.2.5. 定位元件的设计 .213.2.6. 夹具体槽形与对刀装置设计 .213.2.7. 夹紧元件的设计 .213.2.8 夹具设计及操作的简要说明 .21设计体会 .
