公开(公告)号：US3827269A

公开(公告)日：1974-08-06

申请号：US30383272

申请日：1972-11-06

申请人： GEN MOTORS CORP

发明人： HOAGLAND M ,  WROBLEWSKI L

IPC分类号： B21H1/18 ,  B21D37/06

CPC分类号： B21H1/18

摘要： An improved die for a ''''wedge roll'''' type roll forming machine including a pair of vertically spaced rolls adapted for rotation in the same direction and defining a pair of mounting surfaces adapted for rigidly supporting the dies, the improved dies including a generally triangular forming surface bounded along the leading converging edges by a pair of driving surfaces disposed at an angle with respect to the forming surface, each of the driving surfaces having formed thereon a plurality of randomly spaced and irregularly shaped raised projections having flat top surfaces, tapered sides and substantial column rigidity under compression forces.

摘要翻译： 一种用于“楔形辊”式成型机的改进的模具，包括一对垂直间隔开的辊，其适于沿相同方向旋转并且限定一对适于刚性支撑模具的安装表面，改进的模具包括大致三角形的成形表面 通过相对于成形表面成一定角度设置的一对驱动表面沿着引导的会聚棱边界，每个驱动表面上形成有多个随机间隔且不规则形状的凸起突起，其具有平坦的顶表面，锥形侧面和实质上 压缩力下的柱刚度。