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1. (WO2018163525) PRESS BRAKE

Pub. No.:    WO/2018/163525    International Application No.:    PCT/JP2017/042139
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Sat Nov 25 00:59:59 CET 2017
IPC: B21D 5/02
B30B 15/00
Applicants: AMADA HOLDINGS CO.,LTD.
株式会社アマダホールディングス
Inventors: YAMAGUCHI Yohei
山口 洋平
UESUGI Satoru
上杉 悟
Title: PRESS BRAKE
Abstract:
According to the present invention, a safety device (a light projector (30) and a light receiving unit (40)) detects a penetrant penetrating between a punch (14) and a die (24) and stops the descent of an upper table (10). The safety device has a front-side monitoring area and a back-side monitoring area for monitoring the penetration of the penetrant, the front-side monitoring area and back-side monitoring area being disposed, respectively, in front of and behind the movement path of the punch (14) while the punch (14) descends toward the die (24). The ranges within which the front-side monitoring area and the back-side monitoring area move due to the descent of the upper table (10) are defined as a front-side search range and a back-side search range. The safety device invalidates the detection of the penetrant by the front-side monitoring area or the back-side monitoring area when interference of a front-side search range or a back-side search range by an obstacle is detected by a simulation executed in advance.