Invention Grant
- Patent Title: Control device for servo die cushion
- Patent Title (中): 伺服模具坐垫控制装置
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Application No.: US12610174Application Date: 2009-10-30
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Publication No.: US07923956B2Publication Date: 2011-04-12
- Inventor: Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
- Applicant: Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
- Applicant Address: JP Yamanashi
- Assignee: Fanuc Ltd
- Current Assignee: Fanuc Ltd
- Current Assignee Address: JP Yamanashi
- Agency: Lowe Hauptman Ham & Berner LLP
- Priority: JP2009-033234 20090216
- Main IPC: G05B5/01
- IPC: G05B5/01

Abstract:
A control device, for a servo die cushion, capable of improving a response after overshoot generated by collision of a slide and a die cushion. The control device has a local maximum point judging part which judges a local maximum point based on the detected speed of the servomotor; a speed correction value calculating part which calculates a speed correction value for the servomotor based on the judgment result and the detected speed of the slide; a second force commanding part which generates a second force command value, the second force command value decreasing from an initial value to a first force command value, the initial value being equal to the force detected value when reaching generally the local maximum point. The force command value is switched from the first force command value to the second force command value, when the force detected value reaches the local maximum point.
Public/Granted literature
- US20100207566A1 CONTROL DEVICE FOR SERVO DIE CUSHION Public/Granted day:2010-08-19
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