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2110型柴油机气缸盖加工工艺规程设计及夹具设计。
摘 要
这次毕业设计的题目是：2110型柴油机气缸盖加工工艺规程设计及夹具设计。
气缸盖是柴油机的重要零部件之一，属于典型的箱体类零件。他的结构比较复杂，其加工质量的好坏将直接影响到柴油机的整体性能。
通过对零件图的分析可知：气缸盖的底面、气道孔及底面座孔的技术要求加高，是重要的平面，因此需要精细加工。
由零件的年生产纲领可以确定该零件为大批量生产。毛坯采用HT20—40的铸铁由机器进行砂模铸造。
粗加工时，选取气缸盖的上下底面互为基准；精加工时，选取加工过的气缸盖底面为基准。以底面及底面上的两个销进行定位，即“一面两销”式定位。
在查阅了一些相关的资料，并仔细地分析了大连柴油机厂的气缸盖加工工艺路线和其它一些同类产品的生产线状况后，才具体地制定了这次设计的工艺方案。实际的机械加工工序安排，遵循着：先主要、后次要，先粗后精，先面后孔等原则。
根据生产批量和生产实际情况，工序的安排采用了工序集中和工序分散相结合的办法，并且设计了一条自动化生产线DX33.当按工序集中原则组织过程时，还普遍的采用了自动化程度较高的高效机床和工艺装备。这样，大大地提高了生产率。
工艺方案中的工序310，采用了专用机床，在自动线上进行加工。因此，需要设计“一面两销”式专用夹具。其中一销为短圆柱销，另一销为削边销，分别限制2个和1个自由度。
Abstract
The topic of this graduation project is: 2110 type diesel engine air cylinders build processing technology design by rules and the clamping apparatus is designed.
It is one of the important spare part of a diesel engine that the air cylinder is covered, belong to the typical case body type part. It relatively complicated structure, its the qualities of quality influence globality can diesel engine directly.
Can know through the analysis to the picture of part: Bottom surface who air cylinder build, Kong bottom surface seat the specification requirements of hole increase angry ones, It is the important plane, so need retrofit
Can be confirmed this part as and produced in enormous quantities by producing the guiding principle annually of the part. Blank adopt HT go on sand mould's casting by machine by casting iron as much as 20-40.
At the rough machining, choose about bottom surface who air cylinder stamp interact as the datum; At the finish machining, choose air cylinder that process leave datum on bottom surface. At bottom surface and eaches on the bottom surface sell and go on and make a reservation, namely" each sell at two" the type make a reservation.
It consults relevant materialses analyse diesel engine of Dalian the air cylinders of factory build route and similar the production lines of productses after the state processing technology carefully, Have made this technology scheme designed concretly . The real machining process is arranged, is following : It is neither first main, afterwards less important nor first after being thick precise, the hole waits for the principle after one first.
At production lot and reality of producing, the arrangements of process adopt in collecting and process disperse way that combine together process, Design one a piece of automatic production line DX 33s. When concentrate the principle on organizing the course according to the process, also relatively and technology equip high high-efficient lathes general adoption automatic degrees. So, have boosted productivity greatly .
Technology 310 processes of the scheme, it adopts special-purpose lathe process at the transfer machine. However, need and design " each sell at two" type special-purpose clamping apparatus. Sell and sell for short cylinders among them and sell and for paring and sell, limit each and 1 a piece of degree of freedoms respectively at another.