Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1977-07-13
1978-12-26
Hohauser, Herman J.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
408 11, 318561, 364474, G05B 1300
Patent
active
041318374
ABSTRACT:
During machine tool operation a first set of sensors, referred to as cutter deflection sensors, provides data which is representative of the physical deflection of the cutting tool from a rest position, while a second set of sensors, referred to as position sensors, provides data which is representative of the position of the workpiece mounted on the machine tool relative to a reference or setpoint position. The cutter deflection and workpiece position data are combined to produce a resultant which is representative of the actual position of the cutting tool relative to the workpiece. This resultant is then compared with reference data which is representative of the desired position of the cutting tool relative to the workpiece. The difference between the actual and desired positions is then compared with a preselected tolerance value. The machine tool is then either (1) permitted to continue at its programmed speed, (2) slowed down or (3) stopped, depending on the value of the difference data compared to the tolerance value.
REFERENCES:
patent: 3573588 (1971-11-01), Geyer et al.
patent: 3720120 (1973-03-01), Cutler
patent: 3777125 (1973-12-01), Whetham
patent: 3849712 (1974-11-01), Lankford et al.
patent: 3986010 (1976-10-01), Lankford et al.
Hohauser Herman J.
The Boeing Company
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