Convex curve cutter
OwnerMartin L. Shoffnerinventor
Life of this patent
Estimating the term…
Abstract
A portable bandsaw attachment for cutting symmetrical or asymmetrical convex curved sides into a multisided three dimensional workpiece comprising a rotating table that supports the workpiece, a stationary base that supports the rotating table and provides an attachment point for the rotating table, laterally movable guides and backstop arrangement attached to the rotating table for locating and securing the workpiece relative to the bandsaw blade. The attachment can include handles to grip and turn the rotating table, an opening in the stationary base to provide clearance for the bandsaw blade, and means for securely mounting the stationary base to the bandsaw table.
Claims12
A portable bandsaw attachment permitting the cutting of symmetrical and asymmetrical convex curved surfaces into a multisided three dimensional workpiece, comprising:
- a rotating table configured to support the workpiece on a bandsaw table;
- a stationary base configured to support the rotating table on the bandsaw table and to provide multiple attachment points for rotatably attaching the rotating table to the stationary base, the attachment points being incrementally spaced apart along a longitudinal axis of the stationary base such that selection of a particular attachment point defines a radius of curvature to be cut into the first side of the workpiece, wherein each attachment point defines a different radius of curvature;
- and
- two or more laterally movable guides attached to the rotating table and configured to locate a first side of the workpiece relative to a bandsaw blade on a predetermined center of curvature of a convex curve to be cut into the first side of the workpiece, wherein rotation of the rotating table relative to the stationary base rotates the moveable guides and the workpiece relative to the bandsaw blade such that when the bandsaw blade is operating and aligned to cut the first surface, the first surface rotates relative to the bandsaw blade as the bandsaw blade is cutting the first surface to create a convex curvature into the first surface.
Dependencies are inferred from the claim text.