Non-resonant cyclic drive system employing rectification of the

Details Non-resonant cyclic drive system employing rectification of the Non-resonant cyclic drive system employing rectification of the

1979-04-09

1981-03-24

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

74 61, 173 49, 299 14, 172 40, B25D 1106, A01B 3500

Patent

active

042576482

ABSTRACT:
A vibratory drive system for use in spalling a road surface, cutting rock, etc. Vibratory energy is generated by means of an orbiting mass oscillator, the output of which is rectified by means of a rectifier to provide unidirectional pulses to a cutting tool. In the interests of making the system compact and providing controlled operational parameters, non-resonant operation is employed, optimum drive to the tool being achieved by biasing the oscillator against the tool and by providing a shoulder which fixes the uppermost position of the tool when it is being biased against a load. The tool position and the design of the oscillator are such that the oscillator housing contacts the tool near the mid-down stroke (90.degree.) of the oscillatory vibration cycle, this being the point of highest vibratory velocity and kinetic energy. In this manner, the highest possible delivery of energy to the tool is provided.

REFERENCES:
patent: 1490006 (1924-04-01), Goldschmidt
patent: 1911813 (1933-05-01), Decker
patent: 2039679 (1936-05-01), Byers
patent: 2176801 (1939-10-01), Pinazza
patent: 2545245 (1951-03-01), Stutz
patent: 3628265 (1971-12-01), Galis
patent: 3682254 (1972-08-01), Hoeffleur
patent: 3866693 (1975-02-01), Century

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