发明名称 Pressing machine with die cushion device
摘要 A pressing machine 1 includes: a bed 6 on which a die-cushion device 10 is provided; and a bolster 51 provided on the bed 6. The bed 6 has an inner space 61 in which a die-cushion pad 13 of the die-cushion device 10 is lifted up and down. A supporting portion 63 penetrating the die-cushion pad 13 in a lifting direction and supporting a lower surface of the bolster 51 via a carrier 52 is provided in the inner space 61. With this arrangement, since the bolster 51 is supported by the supporting portion 63, the bolster 51 can be prevented from being flexed during a press forming operation, whereby a highly accurate press forming operation can be realized. In addition, since the supporting portion 63 penetrates the die-cushion pad 13, unlike conventional arrangements, the die-cushion pad 13 does not need to be divided, whereby a complication of the arrangement can be avoided.
申请公布号 US7958765(B2) 申请公布日期 2011.06.14
申请号 US20060794935 申请日期 2006.01.12
申请人 KOMATSU LTD.;KOMATSU INDUSTRIES CORP. 发明人 BABA KIYOKAZU;HONMA HIROAKI;SUNATA MASAHIDE;YOSHIDA HAJIME;SATOU HIROHIDE
分类号 B21D22/00;B21J9/18;B30B1/32 主分类号 B21D22/00
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