沖壓模具外文翻譯-模具設計(存儲版)
【正文】 are an anizational necessity rather than a desired part of the process. ComputerAided Design(CAD) means using the puter and peripheral devices to simplify and enhance the design process .CAD systems offer an efficient means of design, and can be used to create inspection programs when used in conjunction with coordinate measuring machines and other inspection equipment .CAD data also can play a critical role in selecting process sequence. A CAD system consists of three basic ponents: hardware, software, users. The hardware ponents of a typical CAD system include a processor, a system display, a keyboard, a digitizer, and a plotter. The software ponent of a CAD system consists of the programs which allow it to perform design and drafting functions. The user is the tool designer who uses the hardware and software to perform the design 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 au
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