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在压力机上用薄板冲压各种复杂形状零件时,为了使零件不起皱,必须设置压边圈。但压边圈上的压力根据工件的尺寸、形状须有一定值。如果压边力太大,易于拉裂。如果压边力太小,则防止不了起皱现象。因此,压边装置最好为一种压边力可调节且在压制过程中压边力稳定的装置。我们在应用低熔点合金铸模压制零件时,试制了一种多缸油压压边装置。此装置结构简单、成本低、制造容易。可以装在普遍的油压机、双点压力机上和其它压力机上使用。工作中此装置能够随着压力机下降自动压边,不需
Stamping in the press with a variety of complex shape parts, in order to make the parts wrinkles, you must set the blank holder. But the pressure on the blank holder according to the size of the workpiece, the shape must have a certain value. If the blank holder force is too large, easy to crack. If the blank holder force is too small, can not prevent wrinkling phenomenon. Therefore, the pressure-bonding device is preferably a device of which the pressure-holding force is adjustable and the pressure-holding force is stable during the pressing process. When we used the low melting point alloy die casting parts, the trial of a multi-cylinder hydraulic blank holder. The device has the advantages of simple structure, low cost and easy manufacture. Can be installed in the common hydraulic machine, two-point press and other presses on the use. In operation, the device can automatically press the edge of the press as the press is down