Design Of The Punching Moduke Constructiong For The Green Tape Punching Machine

Based on the development contract of the CETC2 (China Electronics Technology Group Corporation The Second Research Institute) "the project development of the green tape puncher". The green tape puncher is one of the key equipment which the LTCC(Low-Temperature Co-fired Ceramics) manufacturing process, the puncher relate to a great deal of theory knowledge, such as precision manufacture, precision control, optics, pneumatic and so on. The automation degree of puncher is greatly high. The primary parts of puncher is the punching module, the machining speed reach 600 holes per minute, the positioning accuracy of the x/y axis of the punching unit is±0.008mm. Therefore must be ensured by the most powerful the ability of design and manufacture.The project of the green tape puncher is established based on the particular analysis and contrast of domestic and foreign equipments, a great much of works is done in prophase. Firstly the specification of the punching precision have been analyzed. The correct design will be needed in order to enhance the punching precision, on the basis of the faultless design, the strong ability of machining and the fiducial assembly must be insured as a result of the significant precision. If we carry out the punching precision of±0.008mm, the abundant theory about the precision distribution must be ensured by experience accumulated in many years. The target can be completed by appropriately assign the precision of design, manufacture and assembly. The configuration design is completed by the CAD tools such as Solidworks.Punching module was designed utilizing the method of reverse design, the minimum clearance of oil whip in the fit of sliding bearing is gained through academic formula. Particular describe of Guiding and location limiting construction of carrying stuff, airtight of punch-head unit, construction design of punch-pin unit and the design of parts of gas circuit is done.Using simulation software, the distortion and the change of gravity in the punching process of the green tape is analyzed, many kinds of reasons affecting punching accuracy are predominated. According to the simulation results, reasons affecting punching accuracy and solving methods can be found, then the correctness of solving methods can be proved through design and validation.