Simultaneous Pipe Cutting and Chamfering Device

• US 20100166513A1
• Filed: 06/29/2009
• Published: 07/01/2010
• Est. Priority Date: 12/30/2008
• Status: Active Grant

• Current Assignee: Philip Karow
• Original Assignee: Philip Karow
• Inventors: Karow, Philip
• Granted Patent: US 7,775,752 B2
• Time in Patent Office: Days
• US Class Current: 408/1.R
• CPC Class Codes: B23B 5/167 Tools for chamfering the ends of bars or tubes
• CPC Class Codes: B23C 2220/16 Chamferring
• CPC Class Codes: B23C 3/02 Milling surfaces of revolution B23C3/06, B23C3/08 take precedence
• CPC Class Codes: B23C 3/122 of pipes or cylinders
• CPC Class Codes: B23C 5/12 Cutters specially designed for producing particular profiles B23C5/10 takes precedence
• CPC Class Codes: Y10T 408/03 Processes
• CPC Class Codes: Y10T 409/303808 including infeeding
• CPC Class Codes: Y10T 409/304144 Means to trim edge
• CPC Class Codes: Y10T 409/30644 to guide tool to move in arcuate path
• CPC Class Codes: Y10T 409/30756 Machining arcuate surface
• CPC Class Codes: Y10T 409/307616 with means to move cutter eccentrically

Abstract

A mobile device for simultaneously cutting and chamfering a pipe is provided having a frame, at least one pipe collet-clamp attached to the frame and defining a principal axis, a split carriage rotatably mounted with respect to the frame about the axis and adjacent to the clamp(s), a router affixed to the split carriage and having a cutting-chamfering bit, and a drive motor for rotating the carriage. The router orbits around the pipe and simultaneously cuts it into two chamfered pipes. A method is also provided for cutting through a pipe and chamfering the cut ends thereof.

Claims

1. A method of cutting through a pipe and chamfering the cut ends thereof, the method comprising the steps of supporting a pipe at axial locations on either side of an intended cutting zone on the pipe, and orbiting a router having a cutting-chamfering bit 360 degrees around the pipe to simultaneously cut through the pipe and chamfer the cut ends.

2. The method of claim 1 wherein the supporting step comprises clamping the pipe with pipe collet-clamps.

3. The method of claim 2 wherein the orbiting step comprises:

providing a split carriage rotatably mounted with respect to a frame about the pipe axis and between the clamps, the router being affixed to the split carriage; and

rotating the carriage about the clamped pipe.

4. The method of claim 2 including the preliminary step of selecting from a collet-clamp set collet-clamps sized for the pipe to be cut.