Bolster apparatus for press-forming workpieces
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 24, 1991
Grant Date -
N/A
app pub date -
Oct 27, 1989
filing date -
Oct 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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