Fly-cutting system and method, and related tooling and articles

Inactive Publication Date: 2010-09-09
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables the creation of tools and articles with uniform groove features, eliminating virtual seams and enhancing optical performance by maintaining consistent sharpness and alignment of groove segments, thus improving the quality of machined products.

Problems solved by technology

This method can result in the formation of the initial portions of the features or grooves near the first end of the workpiece that are relatively sharper than the subsequent portions of the features or grooves formed closer to the second end of the workpiece.

Method used

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  • Fly-cutting system and method, and related tooling and articles
  • Fly-cutting system and method, and related tooling and articles
  • Fly-cutting system and method, and related tooling and articles

Examples

Experimental program
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Effect test

Embodiment Construction

[0025]In conventional fly-cutting operations, a fly-cutter is positioned relative to a workpiece, a motor is activated to rotate the head and the associated cutting element or elements, and the fly-cutting head is moved relative to the workpiece to cut a groove or other feature into the workpiece. Fly-cutting, which is a type of milling, is typically a discontinuous cutting operation, meaning that each cutting element is in contact with the workpiece for a period of time, and then is not in contact with the workpiece for a period of time during which the fly-cutting head is rotating that cutting element through the remaining portion of a circle until it again contacts the workpiece. Although a fly-cutting operation is typically discontinuous, the resulting groove segment or other surface feature formed in a workpiece by the fly-cutter may be continuous (formed by a succession of individual, but connected cuts, for example) or discontinuous (formed by disconnected cuts), as desired. ...

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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.

Description

RELATED APPLICATION[0001]This application is a divisional of U.S. patent application Ser. No. 11 / 834,371, filed Aug. 6, 2007, now pending, which application is generally related to the subject matter of U.S. patent application Ser. No. 11 / 692,257, filed Mar. 28, 2007, now pending, the disclosure of which is incorporated by reference in their entirety herein.TECHNICAL FIELD[0002]The invention relates to machining systems and methods, and in particular to fly-cutting systems and methods and related tooling and articles.BACKGROUND OF THE INVENTION[0003]One method of machining grooves or other features into a workpiece is to use a rotating fly-cutting head to bring a cutting element into contact with the workpiece. The head and the workpiece can be moved relative to each other, which enables the cutting element to cut a long groove into the workpiece, for example. If the workpiece is a cylindrical roll, a fly-cutting head can cut a groove down the length of the outer surface of the roll...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B29C59/04
CPCB23C3/30Y10T82/2529B23C2226/125B23C2226/31B23Q15/007G05B19/182G05B2219/50213Y10T428/24355Y10T82/10Y10T409/303752Y10T408/03Y10T428/24479Y10T82/2587Y10T408/909B23C5/08B29C37/0057B29C2793/0009G02B5/045G02B5/1852Y10T409/108745
InventorBURKE, JAMES P.CAMPBELL, ALAN B.EHNES, DALE L.WERTZ, DANIEL S.
Owner3M INNOVATIVE PROPERTIES CO