Single spindle crankshaft machine

Claim 2

A single spindle crankshaft machine conprising, in combination, a base, coaxial headstock and tailstock spindles rotatably mounted on said base, a bevel gear mounted on each of said spindles, a bevel gear transmission interconnecting the bevel gear mounted on said headstock spindle with the bevel gear mounted on said tailstock spindle, crankshaft machining tools mounted upon said base adapted to machine a crankshaft mounted upon said spindles, said bevel gear transmission including a master drive crankshaft rotatably mounted upon said base drivingly connected to said crankshaft machining tools, said drive crankshaft forming a portion of said bevel gear transmission directly drivingly interposed in the transmission of power between said headstock and tailstock spindles wherein all torque transmitted between said spindles through said transmission is transmitted through said master drive crankshaft, and electric motor drive means drivingly connected to said bevel gear transmission.

Claim 3

In a single spindle crankshaft machine as in claim 1 wherein a worm gear is rotatably mounted upon said base, said motor being drivingly connected to said worm gear, a worm wheel rotatably mounted on said base meshing with said worm wheel, said bevel gear transmission being directly driven by said worm wheel.

Claim 4

A single spindle crankshaft machine comprising, in combination, a base, a headstock spindle rotatably mounted upon said base, a first right angle drive bevel gear set drivingly connected to said headstock spindle, a tailstock spindle rotatably mounted upon said base having an axis of rotation coincident with the axis of rotation of said headstock spindle, a second right angle drive bevel gear set drivingly connected to said tailstock spindle, a slide movably mounted on said base for movement toward and away from the axis of rotation of said spindles, first motor means mounted on said base for moving said slide, a third right angle drive bevel gear set mounted on said slide drivingly connected to said first gear set, a fourth right angle drive bevel gear set mounted on said slide drivingly connected to said second gear set, first and second relatively axially movable power transmission means transversely disposed to said spindles'' axis interposed between said first and third gear sets and said second and fourth gear sets, respectively, a master crankshaft having opposite ends and rotatably mounted on said slide having an axis substantially parallel to said spindle axis, cutting tools operatively connected to said master crankshaft and mounted on said slide, second motor means rotatably drivingly connected to said master crankshaft, said third gear set drivingly connected to one end of said master crankshaft and the other crankshaft end being drivingly connected to said fourth gear set said master crankshaft constituting the sole power train connection between said third and fourth gear sets and said spindles.

Claim 5

A single spindle crankshaft machine comprising, in combination, a base, a headstock spindle rotatably mounted upon said base, a first right angle drive bevel gear set drivingly connected to said headstock spindle, a tailstock spindle rotatably mounted upon said base having an axis of rotation coincident with the axis of rotation of said headstock spindle, a second right angle drive bevel gear set drivingly connected to said tailstock spindle, a slide movably mounted on said base for movement toward and away from the axis of rotation of said spindles, first motor means mounted on said base for moving said slide, a third right angle drive bevel gear set mounted on said slide drivingly connected to said first gear set, a fourth right angle drive bevel gear set mounted on said slide drivingly connected to said second gear set, first and second relatively axially movable power transmission means transversely disposed to said spindles'' axis interposed between said first and third gear sets and said second and fourth gear sets, respectively, a master crankshaft having opposite ends and rotatably mounted on said slide having an axis substantially parallel to said spindle axis, cutting tools operatively connected to said master crankshaft and mounted on said slide, second motor means rotatably drivingly connected to said master crankshaft, said third gear set drivingly connected to one end of said master crankshaft and the other crankshaft end being drivingly connected to said fourth gear set said master crankshaft constituting the sole power train connection between said third and fourth gear sets and said spindles.

Claim 6

A single spindle crankshaft machine comprising, in combination, a base, a master crankshaft, a headstock spindle and a tailstock spindle coaxially rotatably mounted upon said base adapted to hold a crankshaft to be machined chucked therebetween, an electric motor mounted upon said base, a first drive gear drivingly connected to said motor, a second drive gear meshing with said first gear, a bidirectional gear power train including said master crankshaft drivingly interconnecting said spindles to said second drive gear, and crankshaft cutting tools mounted upon said base adapted to engage the pins of the chucked crankshaft imposing a torque on said spindles in a direction opposite to and less than the torque applied to said spindles by said second gear.

Claim 7

A single spindle crankshaft machine comprising, in combination, a base, a master crankshaft, a headstock spindle and a tailstock spindle coaxially rotatably mounted upon said base adapted to hold a crankshaft to be machined chucked therebetween, an electric motor mounted upon said base, a first drive gear drivingly connected to said motor, a second drive gear meshing with said first gear, a bidirectional gear power train including said master crankshaft drivingly interconnecting said spindles to said second drive gear, and crankshaft cutting tools mounted upon said base adapted to engage the pins of the chucked crankshaft imposing a torque on said spindles in a direction opposite to and less than the torque applied to said spindles by said second gear.

Claim 8

A single spindle crankshaft machine as in claim 4 wherein said first gear comprises a worm gear and said second gear comprises a worm wheel.

Claim 9

A single spindle crankshaft machine as in claim 5 wherein said bidirectional gear power train comprises a plurality of bevel gear sets.

Claim 10

A single spindle crankshaft machine as in claim 4, a master drive crankshaft rotatably mounted on said base having an axis of rotation substantially parallel to said spindles'' axis and including pins eccentrically disposed to its axis of rotation, tool supports connected to said pins and movable toward and away from said spindles'' axis thereby, said tools being mounted upon said tool supports, said master drive crankshaft being operatively connected to and driven by said second gear.

Claim 11

A single spindle crankshaft machine as in claim 7 wherein said master drive crankshaft is interposed in the power train between said second gear and one of said spindles.