Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Patent
1974-10-09
1976-07-27
Purser, Ernest R.
Boring or penetrating the earth
Automatic control
Of advance or applied tool weight
173 11, 175203, E21B 1908
Patent
active
039714497
ABSTRACT:
An arrangement for controlling the drilling functions of a full profile rock drill in which the speed of rotation of the cutting head and the feed force of the cutting head are controlled so that the rate of penetration of the drill bit reaches its optimum rate as a function of the feed force. The full profile of drilling apparatus has a part of the cutting head in which cutters are freely rotatable. The change of the rate of penetration of the cutting head into the rock is measured during the drilling operation, and the drilling functions are controlled on the basis of the measured results so that the cutting head feed force is either increased or decreased.
REFERENCES:
patent: 2320874 (1943-06-01), Lehmann
patent: 2322741 (1943-06-01), Osgood
patent: 3189103 (1965-06-01), Attebo et al.
patent: 3373823 (1968-03-01), Fullerton et al.
patent: 3461978 (1969-08-01), Whittle
patent: 3593807 (1970-07-01), Klima
patent: 3605910 (1971-09-01), Deeter et al.
patent: 3613805 (1971-10-01), Lindstad et al.
patent: 3648783 (1972-03-01), Lackey
patent: 3746102 (1973-07-01), Griffin et al.
Holmala Aulis
Nylund Roger
Favreau Richard E.
OY Tampella AB
Purser Ernest R.
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