Search Results

The glass-integrated Curved Seal Extrusion (hereafter called “CSE”) is a new technology for manufacturing automobile-window mole. This technology is to extrude and stick mole directly on 3-D shaped window-glass by using the combination of a multi-axes robot and an extruding machine. This process could not be realized through the previous robot technology whose primary purpose was transporting goods, which did not necessitate real-time speed control. This time, we adopted a robot for the purpose of processing plasticity molding. For the purpose of improving formability, productivity, and appearance quality, we optimized the robot's movements and devised a method to vary the molding speed of the extruding machine. Furthermore, we have established a mass production technology by developing the optimum robot control method.

The exfoliation behavior of heavy coat galvannealed steel sheet was investigated by an actual press forming of the front fender. With the increase in coating weight from 45g/m2 to 60g/m2, the exfoliation changed from powdery to flakey (flaking) in the bead-slided portion. The flaking phenomenon was reproduced experimentally due to sliding at high speed press forming under high normal pressure (high ironing ratio, small bead radius, and high bead height). Flaking resistance of Fe-Zn electro-plated galvannealed steel sheet was also stuied. The effect of Fe-Zn electro-plating changed depending on the various forming mode.