公开(公告)号：US20200307138A1

公开(公告)日：2020-10-01

申请号：US16716212

申请日：2019-12-16

Applicant: AIDA ENGINEERING, LTD.

Inventor： Yasuyuki KOHNO ,  Kazuki HONJO

IPC: B30B15/00 ,  G01L5/00

Abstract: A press load measuring apparatus includes: strain gauges attached to respective columns of a press machine and configured to detect strains generated in the respective columns respectively in association with a press load acting on a slide of the press machine, an inertial force calculator configured to calculate a slide inertial force proportional to a product of a mass of a slide and a member connected to the slide and a slide acceleration detected by an acceleration detector, and a press load calculator configured to calculate press partial load signals before calibration based on a strain signals detected by the strain gauges, eliminate a slide inertial force signals from the press partial load signals before the calibration, and calculate calibrated press partial load signals.

公开(公告)号：US20200307137A1

公开(公告)日：2020-10-01

申请号：US16716118

申请日：2019-12-16

Applicant: AIDA ENGINEERING, LTD.

Inventor： Yasuyuki KOHNO ,  Kazuki HONJO

IPC: B30B15/00 ,  B30B1/26

Abstract: A press load measuring apparatus for a press machine of 1-point type includes: a plurality of strain gauges attached to the respective columns of the press machine, the plurality of strain gauges detecting respective strains generated in the respective columns in association with a press load acting on the slide; a bending moment calculator configured to calculate bending moments acting on respective columns based on an angle formed between a direction of movement of the slide and the connecting rod; and a press partial load calculator configured to calculate press partial load signals corresponding to the respective columns, an impact of bending strain components caused by the bending moments included in the strain signals being eliminated from the press partial load signals based on the bending moments acting on the respective columns detected by strain gauges attached to the respective columns.