The design of Block entitled rocker shaft technology and equipment design and CAD / CAM From Chaoyang Diesel Engine Company L This is designed to be completed in Block 195 engine rocker shaft mold design， Rocker Shaft Tower card processing routes and the development process， some special fixture design Three-dimensional modeling software Pro / E into the mold of its design， including: the construction of a module with parts and blank parts of the solid model; on the part of the investment casting mold design， including sub-surface， injection system， pushing pieces of bodies， punch and die， mold base， ， with engineering drawings and CAXA electronic board module to complete the mold assembly Order to develop machining technology， including process selection， process development line， the determination of machining allowance， and then calculated according to the technical point of order parameters and the appropriate technology to produce the Special milling fixture design， 2 sets of special drilling jig 1 set: the analysis， selection and design， the use of CAXA electronic drawing board to complete its work The design of the difficulties is the fixture and die， in the access to a wealth of information and very good teachers under the guidance of the final settlement of these issues， the successful completion of the
IntroductionMachining aims to generate the shape of work-piece form a solid body，or to improve the tolerances and surface finish of a previously formed work-piece，by removing excess materials in the form of Machining is capable of creating geometric configurations，tolerances， and surface finishes often unobtainable by any other However， machining removes materials， which has already been paid for， in the form of relatively small particles that are more difficult to recycle and are in greater danger of becoming Therefore，developments often aim at reducing or-if at all possible-eliminating machining， especially in mass For these reasons， machining has lost some important markets， yet， at the same time， it has also been developing and especially having captured new markets with the application of numerical Some feel for the important of machining may be gained from the observation that in 1983 there were about 2 million metal-cutting machine tools in the unite states ( of which some 5% were numerically controlled ) and that labor and overhead costs amounted to $125 billion， or 3% of the GNP
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