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生产实践表明,应用组合冲模的冲裁工艺不但适于冲裁薄板,也适于冲裁中厚板,而且这是冲裁工艺发展的必然趋势。货车车体是由各种型钢和板材组焊而成。其冲裁件虽然名目繁多,尺寸各异。但分析起来,在冲裁件之间还存在着一定的内在联系。如:冲裁零件的厚度一般在3～16毫米(为中厚钢板)。枕横梁覆板、中梁隔板、小横梁等零件,它们的大小和冲裁缺口尺寸的变化都是有规律的。因此,在冲裁车辆零件时,应用组合冲模是可能和有效的。
Production practice shows that the use of combination punching die not only for punching sheet, but also suitable for punching plate, and this is the inevitable trend of development of blanking process. Wagon body is made by a variety of steel and plate welding. Although the blanking pieces of various names, sizes. However, analysis shows that there is still a certain internal relationship between blanking pieces. Such as: blanking parts thickness is generally 3 ~ 16 mm (for the thick plate). Pillow beam cover plate, beam plate, small beams and other parts, their size and punching notch size changes are regular. Therefore, it is possible and effective to use a combination die for punching vehicle parts.