Cutter tool for bore liners

A trimming apparatus for trimming a newly-installed sleeve liner after the liner is positioned in a cylinder bore of a combustion engine component, comprising:

• a trimming tool adapted to shave off a protruding end of the newly-installed sleeve liner;
• a tool holder with a first section shaped and adapted to stably engage the combustion engine component, and a second section operably engaging the trimming tool and configured to hold the trimming tool for rotation over a selected cylinder bore when the tool holder is attached to the combustion engine component;
• and
• a tie-down device shaped to secure the tool holder to the engine component;
• wherein the tool holder has a bore neck, and the trimming tool includes a shaft that is rotatable and also that is movable in a direction parallel the bore neck, and wherein the trimming tool includes a stop that engages a top of the neck to limit longitudinal movement of the trimming tool;
• wherein further the top of the neck includes a thrust bearing for engaging the stop.

A trimming apparatus for trimming a newly-installed sleeve liner after the liner is positioned in a cylinder bore of a combustion engine component, comprising:

• a trimming tool adapted to shave off a protruding end of the newly-installed sleeve liner, the trimming tool having a drive shaft and having an enlarged cutter head connected to the drive shaft and further having a stop;
• and
• a tool holder having a bore neck operably supporting the drive shaft of the trimming tool for rotation and for limited longitudinal movement, with the longitudinal movement being limited by engagement of the stop against the tool holder in at least one direction, and the tool holder further having an enlarged pocket for receiving the cutter head and for positioning the cutter head adjacent a protruding end of the newly-installed sleeve liner when the tool holder is supported on the combustion engine component, the tool holder being configured and sized for manual manipulation and operation and having an end shaped and adapted to stably engage the combustion engine component while the trimming tool is being operated manually;
• wherein the tool holder includes a thrust bearing on a top surface thereof, and the stop engages the thrust bearing to limit longitudinal movement of the trimming tool relative to the tool holder.

A method comprising steps of:

• providing a combustion engine component with a damaged cylinder bore;
• friction-fitting a sleeve liner of bearing material in the damaged cylinder bore to repair the cylinder bore;
• providing a trimming tool having a cutter adapted to shave off a protruding end of the newly-installed sleeve liner, the cutter being rotatable about a centerline that is adapted to be positioned collinearly with a centerline of the cylinder bore;
• attaching the trimming tool to the combustion engine component with a tie-down device, including holding the trimming tool for rotation over the selected cylinder bore with the centerline of the cutter aligned with the centerline of the cylinder bore;
• and
• rotating the trimming tool to trim a protruding end of the liner.