Cutting – Cutting motion of tool has component in direction of moving... – Tool carrier shuttles rectilinearly parallel to direction of...
Patent
1981-04-27
1983-10-25
Meister, James M.
Cutting
Cutting motion of tool has component in direction of moving...
Tool carrier shuttles rectilinearly parallel to direction of...
83320, 474110, B23D 2100, B23D 2504
Patent
active
044111827
ABSTRACT:
A flying cutoff for cutting successive lengths of a continuously moving, elongate workpiece includes a carriage assembly provided with a cutoff die set which is slideably mounted on a swinging ram and is selectively accelerated or decelerated in synchronism with the movement of the workpiece by a belt drive system which includes a plurality of endless, flexible, toothed belts, each secured to the carriage assembly and trained around a corresponding drive and idler gear. The belts are of different pitches and/or tensions so as to give the belts differing resonant and harmonic frequencies which tend to cancel each other out in order to eliminate cutting measurement error created by the cumulative effects of belt oscillation. The drive gears are driven by a hydraulic motor whose output is precisely controlled by a direct current, reversible stepping motor. Limit switches positioned at predetermined locations along the carriage path of travel provide signals to a computerized process controller which controls both the stepping motor and the ram in proper synchronization with the movement of the workpiece.
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patent: 4312252 (1982-01-01), Duddridge
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