Patent ID: 6203478
Filing Date: 2001-03-20
Classification: B23B,B23Q,Y10T

Abstract:
A machine for drilling oil-holes in a crankshaft at various positions lengthwise and widthwise about a longitudinal axis through the crankshaft with perpendicular and angled directions with regards to the longitudinal axis, said machine comprising:(a) a frame;(b) a crankshaft holding means mounted on the frame for holding and maintaining the crankshaft in a horizontal position while allowing the crankshaft to rotate in two directions, one direction of rotation being concentric with the longitudinal axis of the crankshaft and the other direction of rotation being concentric with a vertical axis through the crankshaft holding means, said vertical axis through said crankshaft holding means not intersecting said longitudinal axis of said crankshaft; and(c) a crankshaft drilling means mounted on the frame adjacent to the crankshaft holding means for drilling holes in the crankshaft, the crankshaft drilling means having four independent axes of movement, a first axis which is horizontal and along which a tool is moved into penetrating engagement with the crankshaft, a second axis which is horizontal and along which the tool is moved in a lengthwise direction along the crankshaft, a third axis which is vertical and along which the tool is moved vertically, and a fourth axis which is horizontal and along which the tool is moved horizontally, parallel to the first axis.