畢業(yè)設計外文翻譯沖壓模具設計成型方面(編輯修改稿)
2025-07-27 12:06 本頁面
【文章內容簡介】 ming die A pressed part with an integrated punched nut Die developmentTraditionally the business of die engineering has been influenced by the automotive following observations about the die development are mostly related to body panel die statements are,however,made in a fundamental context,so that they are applicable to all areas involved with the production of sheetmetal forming and blanking dies.Timing cycle for a mass produced car body panel Until the end of the 1980s some car models were still being produced for six to eight years more or less unchanged or in slightly modified ,however,production time cycles are set for only five years or less().Following the new different model policy,the demands ondie makers have also changed contracts of much greater scope such as Simultaneous Engineering(SE)contracts are being increasingly a result,the die maker is often involved at the initial development phase of the metal part as well as in the planning phase for the production ,a much broader involvement is established well before the actual die development is initiated. Time schedule for a mass produced car body panelThe timetable of an SE project Within the context of the production process for car body panels,only a minimal amount of time is allocated to allow for the manufacture of the large scale dies there is a runup period of about 10 months in which design and die tryout are plex SE projects,which have to be pleted in to 2 years,parallel tasks must be carried ,additional resources must be provided before and after delivery of the short periods call for precise planning,specific knowhow,available capacity and the use of the latest technological and munications timetable shows the individual activities during the manufacturing of the dies for the production of the sheet metal parts().The time phases for large scale dies are more or less similar so that this timetable can be considered to be valid in general.Data record and part drawingThe data record and the part drawing serve as the basis for all subsequent processing describe all the details of the parts to be produced. The information given in the Timetable for an SE projectpart drawing includes: part identification,part numbering,sheet metal thickness,sheet metal quality,tolerances of the finished part etc.(). To avoid the production of physical models(master patterns),the CAD data should describe the geometry of the part pletely by means of line,surface or volume a general rule,high quality surface data with a pletely filleted and closed surface geometry must be made available to all the participants in a project as early as possible.Process plan and draw developmentThe process plan,which means the operational sequence to be followed in the production of the sheet metal ponent,i
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