B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/3
B23B 41/00 (2006.01) B23B 29/02 (2006.01) B23Q 1/54 (2006.01) B23Q 9/00 (2006.01)
Patent
CA 1290959
A B S T R A C T A self-centering and aligning attachment assembly for attaching a portable align boring machine to a workpiece or associated support for machining a bore in the workpiece includes first and second attachment sub-assemblies. The a first attachment sub-assembly has a first tubular member through which the boring bar can pass and which is securable to the boring machine. The first tubular member has a first inner bearing member with an inner bearing surface to slidably and rotatably receive the boring bar, and an outer bearing member with an outwardly curved and an outwardly facing bearing surface. A collar member surrounds the first tubular member and has an inwardly facing curved bearing surface slidably engaging the outwardly facing curved bearing surface of the outer bearing member to enable the collar member to move angularly relative to the first tubular member. The second attachment sub-assembly has a second tubular member through which the boring bar can pass, and a second inner bearing member with an inner bearing surface to slidably and rotatably receive the boring bar. The second inner bearing member also has an outer curved bearing surface, and the second tubular member has an inner curved bearing surface engaging the outer curved bearing surface of the second inner bearing member to enable the second inner bearing member to move angularly to the second tubular member. The second tubular member is securable to the workpiece or associated support with the second inner bearing member in alignment with the bore in the workpiece to be machined. The collar member of the first attachment sub-assembly is securable to the second tubular member of the second attachment sub- assembly to enable the boring machine with the first attachment sub-assembly secured thereto to be secured to the second attachment sub-assembly after the second attachment sub- assembly has been secured to the workpiece or associated support and aligned with the bore in the workpiece, the outer bearing member of the first attachment sub-assembly and the inner bearing member of the second attachment sub-assembly being self-centering.
586006
Dubois Gerald Joseph
Gowling Lafleur Henderson Llp
LandOfFree
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