Miniature roller plane for making precision cuts in flat and concave work surfaces

摘要

A miniature roller plane for making fine cuts in straight and concave surfaces of a workpiece. The roller plane includes a mounting frame to move along the workpiece, a roller attached to the front of the mounting frame, and a threaded shaft projecting from the opposite end of the mounting frame to which a pushing force is applied. The roller at the front of the mounting frame may have a cylindrical or a barrel shaped configuration to facilitate the mounting frame riding over straight and concave surfaces. An adjustable cutting blade is slidable over a ramp face of the mounting frame. The position of the cutting blade along the ramp face is selectively adjusted with micrometer precision by way of a rotatable thumb nut that is coupled to and movable axially along the threaded shaft towards the cutting blade. Once the position of the cutting blade has been selected, a lock down bar applies a holding pressure against the cutting blade to prevent a further displacement of the cutting blade over the ramp face.