door inner hinge face design-0000000000000.ppt

NOTE: This presentation is not intended to supercede the direction of the Best Practice, rather it is to show methods of improving formability performance if problems arise 对钣金成型性有利和不利的几何特征 （Preferred and Non-Preferred Geometry for Formability） 侧门内板– 铰链安装面设计 关于成型性的几何特征 Preferred Design 连续的, 光顺的 J曲线 和铰链安装面 简单的几何特征(J曲线和铰链安装面之间面要尽可能少或者没有，两者之间距离尽量小。min. no. of surfaces and min. dist. between J-line and hinge pad) 避免在铰链安装面附近做特征(任何小的改变都会产生滑移线。any minor transition will leave skid line) 复杂几何特征（面太多） Complex geometry (too many surfaces) 连续的J曲线（Straight J-line） 简单几何特征(一个大面) J曲线不连续/J-line not straight/smooth Non-Preferred Design 铰链安装面附近的特征（Feature near hinge surface） 铰链安装面附近没有特征（No features near hinge surface） 侧门内板– 铰链安装面设计 关于钣金成型性的几何特征 对侧门内板铰链安装面处成型性有利的几何特征。（Preferred Geometry for Formability on Side Door Inner Panels on Hinge Face） ? 铰链安装面应设计的尽可能简单，以防止产生成形性问题。J曲线的任何变化，铰链安装面上突出的特征，铰链安装凸台与包边面处的特征，或者复杂的几何特征都将增加钣金拉深时过度较薄或者褶皱的趋势。 The hinge face should be as simple as possible to avoid any formability concern.? Any transitions on J-line, sharp features on hinge pads, features under hinge mounting surfaces, or complex geometry will increase tendency to excessively thin and wrinkle.? 侧门内板——铰链安装面设计 Side Door Inner – Hinge Face Design Preferred Geometry for Formability – Examples Smooth, straight J-line PREFERRED 后门 后门 前门 后门 Non-Preferred Non-Preferred Non-Preferred 光滑，连续的J曲线（Smooth, straight J-line） 避免沿着J曲线任何变化（Avoid any transitions along J-line） 避免沿着J曲线的面有任何深度上变化（Avoid any depth change along J-line） 避免J曲线上有拐角（Avoid any corners along J-line） Side Door Inner – Hinge Face Design Preferred Geometry for Formability – Examples Smooth, straight J-line J-line Geometry Considerations for Formability on Hinge Face ? J曲线应该连续。J曲线上任何变化之处都会增加该处拉深时过度减薄（或者开裂）。如果变化是必须的，该处应尽可能平缓以减弱变薄程度。 （The J-line should be straight.? Any transitions occurring along the J-line will increase the potential to excessively thin (or split) at that local area.? If a transition is required, then the corners should be ball