Patent ID: 9089907
Filing Date: 2015-07-28
Classification: B23C,F02F,Y10T

Abstract:
1. A method for machining a connecting rod passage of a connecting rod, including a bore at a first end to receive a crankshaft, in a cylinder crankcase of an internal combustion engine, comprising: producing at a base of a cylinder shaft a straight cut of cylindrical form, to allow lateral travel of the connecting rod in a plane perpendicular to a rotational axis of the bore of the connecting rod when a piston connected to the connecting rod at a second end moves up and down in the cylinder shaft, with a rotary milling tool that operates by travel in the plane perpendicular to the rotational axis of the bore of the connecting rod and below the cylinder shaft; wherein the straight cut is spaced apart from a horizontal through-hole extending through a cylinder liner into an adjacent cylinder shaft for passage of gases from the cylinder shaft, and wherein a direction of travel of the milling tool is orientated obliquely relative to an axis of the cylinder shaft.