Abrading – Abrading process – Roll – roller – shaft – ball – or piston abrading
Reexamination Certificate
2005-07-05
2005-07-05
Hail, III, Joseph J. (Department: 3723)
Abrading
Abrading process
Roll, roller, shaft, ball, or piston abrading
C451S028000, C451S051000, C451S057000, C451S058000, C451S177000, C451S178000, C451S282000, C451S364000, C451S365000, C451S388000, C451S397000, C451S398000
Reexamination Certificate
active
06913522
ABSTRACT:
An apparatus for grinding center bearings of crankshafts includes a clamping unit for clamping and driving a crankshaft; a grinding spindle, positionable perpendicular to the crankshaft; a plurality of grinding wheels on the grinding spindle, corresponding to the number of center bearings to be ground; a plurality of steadies, for supporting the crankshaft, opposite the grinding spindle; and an additional processing unit for performing preliminary grinding on the center bearing, by forming an elevated bearing seat for the steadies, opposite the bearing, such that the steadies are continuously guidable during grinding of the center bearings. In a method for grinding center bearings of a crankshaft using the apparatus, the center bearings are simultaneously ground using a multilayer grinding wheel set, and prior to a final grinding of the center bearings to their final dimensions, a bearing seat for a steady is ground on at least one center bearing.
REFERENCES:
patent: 4485593 (1984-12-01), Munzing et al.
patent: 4790698 (1988-12-01), Heffron
patent: 1 487 669 (1967-07-01), None
patent: 00 66323 (2000-11-01), None
Erwin Junker Maschinenfabrik GmbH
Hail III Joseph J.
Jordan and Hamburg LLP
McDonald Shantese
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