Title:
クッションピン均圧化装置、クッションピン均圧化機能付きダイクッション装置及びクッションピン均圧化方法
Document Type and Number:
Japanese Patent JP6646697
Kind Code:
B2
Abstract:
A cushion pin pressure equalizing device that can absorb a variation in height of a plurality of cushion pins and control a die cushion load highly accurately, a die cushion device with a cushion pin pressure equalizing function, and a cushion pin pressure equalizing method are provided. An initial pressure in ascending-side pressurizing chambers of a pressure equalizing hydraulic cylinder group 151 for absorbing a variation in height of a plurality of cushion pins 126a to 126n is controlled so as to be an appropriate pressure. By doing so, the variation in height of the plurality of cushion pins can be absorbed within a shortest stroke of a slide 110 after the slide 110 comes into collision with a cushion pad 128 so as to equalize die cushion loads that are applied individually to the cushion pins and a target die cushion load can be generated within the shortest stroke of the slide 110, whereby a response to application of the die cushion load can be stabilized without excessive delay. A cushion pin pressure equalizing method for a die cushion device is also described.
Inventors:
Yasuyuki Kono
Application Number:
JP2018038745A
Publication Date:
February 14, 2020
Filing Date:
March 05, 2018
Export Citation:
Assignee:
Aida Engineering Co., Ltd.
International Classes:
B21D24/02; B30B15/02
Domestic Patent References:
| JP569050A | ||||
| JP6190465A | ||||
| JP8281344A | ||||
| JP2017100155A |
Attorney, Agent or Firm:
Kenzo Matsuura