Based on the 3D engine cylinder head of the overall composition of drilling and fixture design
Abstract: The design project is from Jiangdong Dynamic Group, Yancheng. Considering a large quantity of parts needed by diesels, a modular machine tool is designed to improve the accuracy and efficiency of diesel production. The combination of machine tools against ZH1105 diesel engine exhaust, cylinder head above surface 2 × M10-7H thread bottom outlet, gas wells over the 4 × M10-7H thread bottom outlet, G3 / 8 "at the same time placing Bottom. The design is mainly focused on both the overall design and jig design. The overall design makes detailed analysis of processing techonology, choice of the positioning datum of processing, grip program, proper cutting parameters, cutting tools, the configuration types of machine tools, the proper construction program and so on. Meanwhile the drawing of “Three Charts and One Card” (automatic drawing process chart, size relation chart, machining schematic diagram and production calculating card) are completed. As far as jigs are concered, a special fixture are employed with the aid of the three platforms positioning program according to the principle of six points positioning to eliminate the six degrees of freedom of workpiece for a stable and reliable positioning, and the synchronous processing of two surfaces of parts which can simplifying the process. The safer, more reliable and convient hydraulic grip devices are employed for a stable and reliable grip. The charateristics of effiecy, low cost, high processing accuracy, easy operation, the machine tool are obtained to relieve the labor internsity, improve efficiency which meets the requirements of the design.
Key Words: Modular machine tool; Fixture; Diesel engine cylinder head