Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes – With pattern control means
Patent
1977-07-25
1978-10-24
Lake, Roy
Metallurgical apparatus
Means for cutting solid metal with heat, e.g., blowpipes
With pattern control means
266 69, 266160, B23K 702
Patent
active
041218086
ABSTRACT:
A drilling attachment for a numerically controlled flame cutting apparatus of the type having a plurality of flame cutting assemblies mounted in spaced relation in a plane for controlled lateral movement along a horizontally translationally movable beam for cutting intricate patterns from a sheet metal workpiece, which comprises a mounting member adapted to be secured to the beam for controlled lateral movement therealong in a manner similar to the flame cutting assemblies, a support plate carried by the mounting member and vertically movable relative thereto, a motor for moving the support plate vertically between a drilling position near the surface of the workpiece and a storage position remote from the workpiece, at least one drill motor secured to the support plate for movement therewith and for rotatably driving a cutting head to drill a hole in the workpiece, at least one drill feed rate control mechanism associated with the drill motor for controlling advancement of the cutting head into the workpiece, and a lubricating device encompassing the lower portion of the cutting head and secured to the support plate for movement therewith so as to lubricate the cutting head and workpiece during drilling of a hole. The method comprises utilization of the above apparatus to drill a plurality of holes at different locations sequentially on a large sheet metal workpiece, prior to flame cutting the outer periphery of the object to be formed so that the workpiece will remain stable during the drilling operation due to its own weight.
REFERENCES:
patent: 2619707 (1952-12-01), Young et al.
patent: 4063059 (1977-12-01), Brolund et al.
Bell Paul A.
Lake Roy
Terrell Tool and Die Corporation
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