The subject of the design is the cylinder body end face drilling combination machine and fixture design. Mainly to explain the basic process and requirements of the combination machine design. combination machine is an efficient special purpose machine which is based on a large number of common components and a small number of dedicated components according to the needs of the work piece. Combination machine was developed in the end of industrial production compared with traditional machine; combination machine has many advantages , such as high efficiency , high accuracy and low cost . It is composed of some general parts , such as bed ,column ,workable, power unit ,and some special parts designed according to different work piece machining need. Over years, a universal machine is widely used in mechanical processing, but with the development of production, production is growing and accuracy is higher of many machining products, so the use of universal machine can not meet the requirements. Of course, combination machine can improve production efficiency and precision. It should be possible to use common parts and standard parts in order to reduce the manufacturing cost of combination machine in the combination machine design process.
The preface of a lot of works can be completed on the combination machine, but in regard to the majority current usage of combination machine, then and primarily used for the flat surface to process and the bore to process two big work preface. The main part including:1) Combination machine frame design: determines the interrelation of the different part in the machining tool, select general parts and tool oriented .Then compute cut feed and productivity finally draw a sketch map of the machine. 2) The preparation of combination machine “Three figs and one card”, that is to draw the process diagram of the parts to be processed, processing schematic, machine dimensions contact map and production efficiency calculation card;3) Combination machine parts design including headstock, proper transmission layout, shaft and gear move freely without interference which ensure the stability and accuracy during transmission ,then design dedicated select bearings and engine etc.
Key words:Combination Machine;Design;The Cylinder Body Face;Drilling;Process