Title:
A device and a method of changing the shape of a tube tip part
Document Type and Number:
Japanese Patent JP6251178
Kind Code:
B2
Abstract:
Systems and methods for providing tube end forming equipment or machines that utilize the advantage of hydraulic power without having the constant noise, heat, and energy usage associated with traditional hydraulic power units. The end forming machine includes a hydraulic pump that is operated only when a demand from the system for oil pressure/flow is present. This is accomplished by providing a synchronous servo motor and servo drive coupled to a fixed displacement hydraulic pump. The oil pressure of the system is monitored to detect when the pressure drops below a preset value to provide closed-loop control of the servo motor. The servo motor is controlled to rotate the hydraulic pump at the required speed (up to the maximum RPM of the motor/pump combination) as necessary to obtain the desired system pressure during the tube end forming process.
Inventors:
Widget, John Fredrick
Application Number:
JP2014541202A
Publication Date:
December 20, 2017
Filing Date:
November 07, 2012
Export Citation:
Assignee:
Addison McKee Incorporated
International Classes:
B30B15/18; B21D41/02; B30B1/32; F15B11/00; F15B11/08
Domestic Patent References:
| JP2010227988A | ||||
| JP2008298226A | ||||
| JP2004301188A | ||||
| JP10314999A | ||||
| JP2011218372A | ||||
| JP2000265966A | ||||
| JP2003136288A |
Foreign References:
| US4530231 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto