| US 7,578,192 B2 | ||
| System and method for monitoring operation of a press assembly | ||
| Evangelos Liasi, Royal Oak, Mich. (US); Chandra Sekhar Jalluri, Canton, Mich. (US); Prashanth Magadi, Ypsilanti, Mich. (US); and Gary Farquhar, Farmington Hills, Mich. (US) | ||
| Assigned to Ford Motor Company, Dearborn, Mich. (US) | ||
| Filed on Jan. 29, 2007, as Appl. No. 11/668,179. | ||
| Prior Publication US 2008/0178676 A1, Jul. 31, 2008 | ||
| Int. Cl. G01M 13/00 (2006.01) | ||
| U.S. Cl. 73—593 | 19 Claims |
| 1. A method for monitoring operation of a press assembly including a press having a replaceable die attached thereto, the
die being configured to form a workpiece, the press including a plurality of press elements, including a movable portion for
moving a portion of the die, a mechanical power source, and a plurality of power transmission elements for transmitting mechanical
power from the mechanical power source to the movable portion of the press, the method including:
establishing a baseline vibration level for a first location on the press assembly, the baseline vibration level defining
a boundary for vibrations beyond which one or more of the press elements have a reduced life expectancy;
measuring vibrations at the first location on the press assembly during operation of the press;
measuring vibrations at a second location on the press assembly during operation of the press; and
correlating the measured vibrations at the first location with the measured vibrations at the second location to establish
a relationship between the vibrations at the first and second locations.
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