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Title:
PRESS BRAKE CROWNING METHOD USING FORCE-INCREASING MECHANISM, AND PRESS BRAKE
Document Type and Number:
WIPO Patent Application WO/2017/154792
Kind Code:
A1
Abstract:
Provided are a crowning method and a press brake wherein, when crowning with a lower table is performed, the crowning is performed while rotating eccentric shafts using a force-increasing mechanism. In this press brake crowning method a front plate 11 and a back plate 13 are provided respectively at the front and back of a lower table 5, which is supported by left and right side frames 3L and 3R in a press brake 1, and crowning is performed while rotating eccentric shafts 23, which are provided in the lower table 5 with intervals therebetween in the left-right directions. A force-increasing mechanism 41 is provided between each eccentric shaft 23 and an actuator 31 for rotating each eccentric shaft 23, the output of the actuator 31 is increased by the force-increasing mechanism 41 and is transmitted to each eccentric shaft 23, and each eccentric shaft 23 is rotated, thereby performing crowning.

Inventors:
SUZUKI Taishi (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
AOKI Makoto (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
Application Number:
JP2017/008581
Publication Date:
September 14, 2017
Filing Date:
March 03, 2017
Export Citation:
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Assignee:
AMADA HOLDINGS CO.,LTD. (200 Ishida, Isehara-shi Kanagawa, 96, 〒2591196, JP)
International Classes:
B21D5/02; B30B15/24
Foreign References:
JP2015178131A2015-10-08
JPH08103832A1996-04-23
JPH08129938A1996-05-21
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (Toranomon Kotohira Tower, 2-8 Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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