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图1所示的小弯管件,是摩托车消音器的出口导管,因管壁很薄,且弯曲半径又小,曲率已达到常规弯管方法容许的最小值,用常规的弯管方法是很难成形的。我们设计的快速开合双管冷挤弯管模,成功地解决了薄壁小弯管加工难题。该模具如图2所示,主要由左半模4,右半模5组成,依靠导向销3保证左右两半模的开合导向,大螺距螺杆8快速推动模块左右张合实现工件的快速装卸。待弯形的直管套在压头
Figure 1 shows the small elbow pipe, motorcycle exhaust muffler duct, because the wall is thin, and the bending radius is small, the curvature has reached the minimum allowable conventional bending method, with the conventional method is to bend Hard to shape. We designed the rapid opening and closing double-pipe cold extrusion elbow mold, successfully solved the thin-walled small elbow processing problems. The mold is mainly composed of a left mold half 4 and a right mold half 5 as shown in FIG. 2. The guide pin 3 ensures the opening and closing of the left and right mold halves, and the large pitch screw 8 rapidly drives the left and right sheets of the mold to realize the quick loading and unloading . Straight pipe to be bent over the pressure head