Machine tool for dressing the end face of an engine cylinder liner
AssigneeP. & O. Australia Limited
InventorWilliam H. Pullen
Life of this patent
Estimating the term…
Abstract
For machine dressing or grinding the end face of an engine cylinder liner particularly a heavy liner of the kind used in marine diesel engines, without removing the liner from its cylinder, a machine tool comprises a base which is locatable in the bore of the liner adjacent the face to be dressed, a beam disposed laterally of the base and rotatable about the upright axis of the base, a cutting tool and or grinding means carried by the beam and presentable to the liner end face while the beam is rotated thereby to dress it by a turning operation and or grinding. sp This is a continuation of application, Ser. No. 79,426, filed Sept. 27, 1979.
Claims7
A machine tool for dressing the end face of an upright engine cylinder liner, comprising:
- (a) a machine base stationarily positioned within the end portion of the liner, contiguous to the end face to be dressed,
- (b) an upright stub shaft mounted on said base with its longitudinal axis coincident with that of the liner, and whereof an upper end portion extends above said base,
- (c) a diametrically disposed beam on the upper end of said shaft so that the beam is rotatable about said axis above said end face.
- (d) means for rotating said beam about said axis,
- (e) metal-dressing tool devices mounted on said beam for presentation to said end face,
- (f) a plurality of guide rollers on said beam, and
- (g) said base having a circumferential runway groove within which said guide rollers ride free to rotate but engage with said base.
A machine tool for dressing the end face of an upright engine cylinder liner having an interior polished cylindrical surface adapted to reciprocably receive a piston comprising:
- (a) a machine base stationarily positioned within the end portion of the liner, contiguous to the end face to be dressed, said base including a wheel adapted to be entered into the liner and held upon a circumferential step therein co-axially therewith by releaseably mounting means not engaging the polished cylindrical surface to secure the machine in operable position relative to the liner,
- (b) an upright stub mounted on said base with its longitudinal axis coincident with that of the liner, and whereof an upper end portion extends above said base,
- (c) a diametrically disposed beam mounted substantially mid length on the upper end of said shaft for rotation relative to said base so that the beam is rotatable about said axis above said end face,
- (d) means for rotating said beam about said axis and said means carried on a mounting separate from said base,
- (e) metal-dressing tool devices mounted on said beam for presentation to said end face.
- (f) a plurality of downwardly depending frusto-conical guide rollers carried on said beam at a location spaced laterally from said upright stub, and (g) said base having a circumferential frusto-conical runway groove within which said guide rollers ride free to rotate but engaged with said base.
Dependencies are inferred from the claim text.