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US 7,561,940 B2Granted
Method for predictive maintenance of a cutting unit of an automatic machine
AssigneeG.D Societa' Per Azioni
InventorFrancesco Nicastro
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Abstract
A method for predictive maintenance of a cutting unit of an automatic machine; the method determining, with a given frequency, the value of a characteristic quantity of the cutting unit related to contact between a cutting member and a counter-member; determining a curve for extrapolating the time pattern of the characteristic quantity value, and programming maintenance work on the cutting unit when the curve is outside a given acceptance range.
Claims45
A method for predictive maintenance of a cutting unit of an automatic machine during normal operation of the cutting unit;
- the cutting unit comprising at least one cutting member cooperating cyclically with a counter-member to cut an article fed between the cutting member and the counter-member;
- the method comprising the steps of:
- a) feeding a succession of articles, normally cut by the cutting unit, between the at least one cutting member and the counter member to cut the articles;
- b) determining, with a given frequency, and during the cutting of the articles, the value (V) of a characteristic quantity of the cutting unit related to contact between the cutting member and the counter-member;
- c) determining a first curve of the characteristic quantity value (V) as a function of time;
- d) extrapolating a future time pattern of the characteristic quantity value (v) using the first curve;
- and
- e) programming maintenance work on the cutting unit when the first curve is outside a given acceptance range.
5 more elements
Dependencies are inferred from the claim text.