FLY-CUTTING SYSTEM AND METHOD, AND RELATED TOOLING AND ARTICLES

• US 20100227751A1
• Filed: 05/19/2010
• Published: 09/09/2010
• Est. Priority Date: 08/06/2007
• Status: Abandoned Application

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Ehnes, Dale L., Campbell, Alan B., Burke, James P., Wertz, Daniel S.
• Application Number:
  US12/782,933
• Publication Number:
  US 20100227751A1
• Time in Patent Office: Days
• US Class Current: 492/35
• CPC Class Codes: B23C 2226/125 cubic [CBN]
• CPC Class Codes: B23C 2226/31 Diamond
• CPC Class Codes: B23C 3/30 Milling straight grooves, e.g. keyways
• CPC Class Codes: B23C 5/08 Disc-type cutters
• CPC Class Codes: B23Q 15/007 while the tool acts upon the workpiece
• CPC Class Codes: B29C 2793/0009 Cutting out
• CPC Class Codes: B29C 37/0057 Moulding single grooves or ribs, e.g. tear lines folding lines B29C53/06
• CPC Class Codes: G02B 5/045 Prism arrays
• CPC Class Codes: G02B 5/1852 using mechanical means, e.g. ruling with diamond tool, moulding
• CPC Class Codes: G05B 19/182 characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control G05B19/21 - G05B19/40 take precedence
• CPC Class Codes: G05B 2219/50213 Grooving of different forms or parallel to each other, grooving cycle
• CPC Class Codes: Y10T 408/03 Processes
• CPC Class Codes: Y10T 408/909 Having peripherally spaced cutting edges
• CPC Class Codes: Y10T 409/108745 Cutting action along work axis
• CPC Class Codes: Y10T 409/303752 Process
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
• CPC Class Codes: Y10T 428/24479 including variation in thickness
• CPC Class Codes: Y10T 82/10 Process of turning
• CPC Class Codes: Y10T 82/2529 Revolvable cutter heads
• CPC Class Codes: Y10T 82/2587 Turret type holder [e.g., multiple tools, etc.]

Abstract

Methods of fly-cutting a workpiece are disclosed, and in methods in which the position of a fly-cutting head or its associated cutting element is known as a function of time. Also disclosed are methods of forming features, such as grooves or groove segments, in a workpiece such as a cylindrical roll. The features may be provided according to one or more disclosed patterns. Articles made using tools machined in the manner described are also provided, such as polymeric film or sheeting that exhibit certain beneficial properties.

Claims

1. A cylindrical tool having groove segments formed therein, wherein the groove segments have a beginning and an end, and successive groove segments are offset with respect to previous groove segments by a helix angle.

2. A cylindrical tool comprising a plurality of groove segments, wherein the groove segments are individually formed in positions relative to each other, and wherein the groove depth distribution of successive adjacent grooves, measured along a line that is parallel to any helix angle associated with the groove segments, is multi-modal.

3. The tool of claim 2, wherein the major axis of the groove segments is parallel to the longitudinal axis of the tool.

4. The tool of claim 2, wherein the major axis of the groove segments is angled relative to a central axis of rotation of the tool.

5. The tool of claim 2, wherein the grooves comprise an arcuate bottom with a radius of curvature generally coinciding with the central axis of the tool.