Cutting – With means to monitor and control operation – Including means to correct the sensed operation
Patent
1984-10-05
1986-07-22
Meister, James M.
Cutting
With means to monitor and control operation
Including means to correct the sensed operation
83171, 83521, 83522, 836511, B26D 710
Patent
active
046012249
ABSTRACT:
A hot wire cutting system for cutting a pattern shape in a block of polyfoam for use as a casting mold for a metal shielding block to be used in radiotherapy treatments is described. The system provides proportioned current responsive to deflection of the hot cutter wire in order to cancel the deflection and maintain the wire in its optimal central cutting position. The hot cutter-wire preferably passes through a field which provides fine vibratory motion of the cutting wire allowing use of lower wire temperatures to effect the cutting. The system may include optical means for determining the accuracy of the profile cut in the polyfoam block.
REFERENCES:
patent: 3017487 (1962-01-01), Priestly
patent: 4222299 (1980-09-01), Treffner et al.
patent: 4391168 (1983-07-01), Gerber et al.
Knoble John L.
Meister James M.
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