METHOD FOR CONTROLLING A PRESS WITH A VARIABLE GEAR RATIO
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Apr 21, 2016
app pub date -
May 21, 2014
filing date -
May 28, 2013
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A method for controlling a press having an electric drive motor and a press transmission with a variable gear ratio (Ü) is disclosed. A tappet is movably mounted in a stroke direction (R) and is connected to the electric drive motor via the press transmission. The gear ratio (Ü) continuously increases as the tappet moves from an upper reversal point (OT) to a lower reversal point (UT). To prevent the press from exceeding a specified maximum pressing force (Fmax), a position-dependent maximum torque (Mmax) is specified for the motor. The control device compares each applied drive torque (M) with the maximum torque (Mmax). If the drive torque (M) exceeds the maximum torque (Mmax), the danger of the force applied by the tappet exceeding the maximum pressing force (Fmax) during an ongoing forming movement is detected. The control device then reduces the drive torque (M) to prevent damage to the press.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully