System for simultaneously setting stroke on a crankshaft lathe
OwnerWilliam R. Gleasoninventor
Life of this patent
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Abstract
A system is disclosed for simultaneously and more efficiently setting the stroke position of a crankshaft on a crankshaft lathe and a method of using the system in combination with the lathe for regrinding, building-up by welding or other machining of journals of the crankshaft. The system includes slide blocks and slides in operable combination with rack and pinion gears for simultaneously positioning the crankshaft from a zero loading position to an offset position transverse to the longitudinal axis of the lathe.
Claims9
In a crankshaft lathe having a headstock, a tailstock and a holding chuck, holding chuck back plate, main spindle shaft, and drive dog collar operably connected to each of said headstock and said tailstock, a system for simultaneously setting the stroke position of a crankshaft comprising:
- (a) headstock mini-shaft journalled in the headstock drive dog collar, said mini-shaft having a first end operably attached to the headstock holding chuck back plate and a second end;
- (b) headstock rack and pinion gear means mounted on the second end of said headstock mini-shaft between the headstock main spindle shaft and the headstock drive dog collar;
- (c) tailstock mini-shaft journalled in the tailstock drive dog collar, said mini-shaft having a first end operably attached to the tailstock holding chuck back plate and a second end;
- (d) tailstock rack and pinion gear means mounted on the second end of said tailstock mini-shaft between the tailstock main spindle shaft and the tailstock drive dog collar;
- said headstock and tailstock rack and pinion means for simultaneously positioning the crankshaft from a zero loading position in which the main spindle shaft for the headstock and tailstock are in alignment with the crankshaft along the longitudinal axis of the crankshaft lathe to an offset position transverse to the longitudinal axis.
In a crankshaft lathe having a headstock, a tailstock and a holding chuck, holding chuck back plate, main spindle shaft, and drive dog collar operably connected to each of said headstock and said tailstock, a system for simultaneously setting the stroke position of a crankshaft comprising:
- (a) mini-shafts each having a first end for receiving a pinion gear and having a second end operably attached to each of said holding chuck back plates;
- (b) slide blocks each having a first face distal each of said main spindle shafts and a second face proximate each of said main spindle shafts and having its longitudinal axis transverse to the longitudinal axis of the lathe, each of said first faces having a bushing journalled on said mini-shafts and each of said second faces having longitudinal guide rails;
- (c) offset slides mounted within said guide rails of said slide blocks, each slide having a front proximate each of said mini-shafts and having a cylindrical opening fixedly mounted on each of said main spindle shafts and a locking pin detent, said opening and said detent being centered along the longitudinal axis of the slide;
- (d) pinion gear racks attached along the longitudinal axes of the front of said slides;
- (e) pinion gears fixedly attached to each of the first ends of said mini-shafts;
- (f) said drive dog collars journalled on each of said mini-shafts between said pinion gear and said back plate;
- (g) locking pins removably positioned in each of said detents for holding said slide in a horizontal crankshaft loading position;
- and
- (h) slide block locking means operably mounted on each of said slide locking blocks to lock each of said blocks in place after setting the desired crankshaft stroke.
Dependencies are inferred from the claim text.