Resonant tool driving apparatus with tool stop

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working

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37DIG18, 172 40, 299 14, E01C 2309

Patent

active

042290457

ABSTRACT:
A sonic generator produces a reciprocating force that is transmitted to a tool by a resonant or nonresonant force transmitting member having an output that reciprocates in forward and backward directions about a neutral position responsive to the force of the sonic generator. The tool is located forward of the output of the force transmitting member, and is movable in backward and forward directions along the work path. A changing gap is formed between the tool and the output as the output reciprocates, the gap tending to close and strike the tool as the output reciprocates in a forward direction and tending to open as the output reciprocates in a backward direction. A continuous unidirectional force is applied to the force transmitting member. The tool advances intermittently along the work path through the material being processed responsive to the continuous unidirectional force and the reciprocating force. A protective gap is maintained by a tool stop between the tool and the output of the force transmitting member. The width of the tool stop is precisely controlled by shimming the tool stop and/or the supports for the force transmitting member.

REFERENCES:
patent: 3633683 (1972-01-01), Shatto
patent: 3695365 (1972-10-01), Schadlich
patent: 3770322 (1973-11-01), Cobb et al.
patent: 3897975 (1975-08-01), Cobb et al.
patent: 4003603 (1977-01-01), Stemler et al.

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