B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/9
B23B 39/00 (2006.01) B23B 39/16 (2006.01) B23B 41/00 (2006.01)
Patent
CA 1172068
DEVICE FOR MAKING TWO AXIALLY PARALLEL BORES ABSTRACT OF THE DISCLOSURE A device is disclosed for cutting two parallel partially intersecting bores, such as the bores used in a screw type compressor housing, comprising, a device housing, a pair of spindles rotatably mounted to the housing and a tool holder connected near the end of each spindle. The spindles are engaged with each other through gears so that rotation of one spindle in one direction causes rotation of the other spindle in opposite direction. A drive shaft is connected to one of the spindles for rotating the pair of spindles simultaneously. Each tool holder is elongated along a major tool holder axis thereof which is substantially transverse to an axis of its associated spindle. The major axes of the two tool holders are always substantially perpendicular to each other so that free rotation of the two spindles, in opposite directions is possible. The size of each tool holder and each spindle adjacent each tool holder is chosen so that there is always a minimum clearance between each tool holder and the spindle carrying the other tool holder.
384657
Gowling Lafleur Henderson Llp
M.a.n. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
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