Abnormality transmission system for wire saw

Details Abnormality transmission system for wire saw Abnormality transmission system for wire saw

2000-01-27

2001-05-22

Eley, Timothy V. (Department: 3723)

Stone working

Sawing

Reciprocating

C125S021000

Reexamination Certificate

active

06234160

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to an abnormality transmission system for a wire saw, and more particularly to an abnormality transmission system for a wire saw that slices hard and brittle materials such as silicon, glass and ceramics.
2. Description of Related Art
If something goes wrong with a wire saw, there is the necessity of solving the problem in order to prevent the waste of an expensive ingot such as silicon. A conventional wire saw informs an operator of the abnormality by turning on a warning light provided on the body of the wire saw or sounding a buzzer or a siren.
In this case, however, the operator must be near the wire saw at all times, and this imposes a heavy responsibility on the operator. Particularly since the diameter of the ingot has been increasing in recent years, it takes a long time to slice one ingot (e.g., it takes about 26 hours to slice an ingot with the diameter of 450 mm). It is often difficult for the operator to be near the wire saw at all times during the slicing.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide an abnormality transmission system for a wire saw, which enables an operator to be informed of an abnormality of the wire saw even if the operator is not in the vicinity of the wire saw.
This invention can be achieved by providing an abnormality transmission system for a wire saw which presses a workpiece against a running wire row to thereby slice said workpiece into a number of wafers, said abnormality transmission system comprising: mobile communication equipment such as a pager and a cellular phone carried by an operator; monitoring means for monitoring the working conditions of said wire saw; abnormality detecting means for detecting an abnormality of said wire saw in accordance with the monitoring results of said monitor means; and dial means for dialing a calling number of said mobile communication equipment through a telephone system if said abnormality detecting means detects the abnormality of said wire saw.
According to the present invention, if something goes wrong with the wire saw, the abnormality is transmitted to the mobile communication equipment such as the pager and the cellular phone carried by the operator. Therefore, the operator can be informed of the abnormality of the wire saw even if he or she is not in the vicinity of the wire saw.


REFERENCES:
patent: 1-173199 (1989-07-01), None
patent: 5-247745 (1993-09-01), None
patent: 6-170717 (1994-06-01), None
patent: 9-282027 (1997-10-01), None
patent: 10-308737 (1998-11-01), None
patent: 11-16072 (1999-01-01), None

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