沖壓模具外文翻譯-模具設(shè)計-全文預(yù)覽
【正文】 sign process. Based on the 3D data of the product, the core and cavity have to be designed first. Usually the designer begins with a preliminary part design, which means the work around the core and the cavity could change. Modern CAD systems can support this with calculating a split line for a defined draft direction, splitting the part in the core and cavity side and generating the runoff or shutoff surfaces. After the calculation of the optimal draft of the part, the position and direction of the cavity, slides and inserts have to be defined .Then in the conceptual stage, the positions and the geometry of the mould ponentssuch as slides, ejection system, roughly defined. With this information, the size and thickness of the plates can be defined and the corresponding standard mould can be chosen from the standard catalog. If no standard mould fits these needs, the standard mould that es nearest to the requirements is chosen and changed accordinglyby adjusting the constraints and parameters so that any number of plates with any size can be used in the mould. Detailing the functional ponents and adding the standard ponents plete the mould().This all happens in 3D. Moreover, the mould system provides functions for the checking, modifying and detailing of the part .Already in this early stage, drawings and bill of materials can be created automatically. Through the use of 3D and the intelligence of the mould design system, typical 2D mistakessuch as a collision between cooling and ponents/cavities or the wrong position of a holecan be eliminated at the beginning. At any stage a bill of materials and drawings can be createdallowing the material to be ordered on time and always having an actual document to discuss with the customer or a bid for a mould base manufacturer. The use of a special 3D mould design system can shorten development cycles, improve mould quality, enhance teamwork and free the designer from tedious routine work. The economical success, however, is highly dependent upon the anization of the workflow. The development cycles can be shortened only when anizational and personnel measures are taken. The part design, mould design, electric design
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