Metal deforming – By plural tool-couples – With means to feed work between plural tool stations
Patent
1989-10-27
1991-12-24
Crane, Daniel C.
Metal deforming
By plural tool-couples
With means to feed work between plural tool stations
72361, 198621, B21D 4310
Patent
active
050741411
ABSTRACT:
This invention relates to a process for press-forming workpieces and a bolster apparatus for the same. The process employs a first bolster apparatus comprising a die holding portion and a transfer, and a second bolster apparatus comprising a die holding portion and a transfer. The process comprises the steps performed sequentially: an exchanging step of removing the first bolster apparatus from a bolster mounting portion of a pressing apparatus and mounting the second bolster apparatus to a bolster mounting portion of the pressing apparatus, thereby exchanging the first bolster apparatus with the second bolster apparatus; and a press-forming step of press-forming second workpieces with the second dies held in the second bolster apparatus by operating the pressing apparatus. The process and the bolster apparatus improve the productivity, and are advantageous when producing various types of products by the small lot, because the transfer can be exchanged simultaneously with the exchange of the bolster apparatuses. In addition, the bolster apparatus has done away with the base for the transfer, because the transfer is incorporated in the bolster apparatus.
REFERENCES:
patent: 3057312 (1962-10-01), Hatch
patent: 3262541 (1966-07-01), DeGain
patent: 3422657 (1969-01-01), Grombka
patent: 3707908 (1973-02-01), Merk
patent: 3746184 (1973-07-01), Wallis
patent: 4032018 (1977-06-01), Wallis
Metalworking Production, vol. 104, No. 22, Jun. 1, 1960, pp. 986-987.
Aichi Steel Works Ltd.
Crane Daniel C.
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