§3.4 断面形式一相对间隙试验 冲裁件的断面质量是冲裁件质量的主要标志之一,而断面质量的许多指标(包括冲裁件的断面形式、毛刺高度、相对光亮带、垂直度、平面度、塌角、撕裂带等)与相对间隙有密切的关系。根据十种常用材料各进行九种间隙的冲我试验,可将落料件与冲孔件的断面形式归纳如图3.11与图3.12所示。 §3.4 cross-sectional form of a relative gap test blanking piece section quality is one of the main indicators of blanking quality, and many of the indicators of cross-section quality (including blanking section form, burr height, relative bright zone, Flatness, collapse, tear zone, etc.) and the relative gap is closely related. According to ten kinds of commonly used materials for each of the nine kinds of gaps in my test red, blanking parts and punching parts of the cross-section can be summarized as shown in Figure 3.11 and Figure 3.12.