The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2008
Filed:
Jun. 29, 2007
Eric R. Larsen, Peoria, IL (US);
Marion B. Grant, Jr., Princeville, IL (US);
Michael P. Vogler, Peoria, IL (US);
Eric R. Larsen, Peoria, IL (US);
Marion B. Grant, Jr., Princeville, IL (US);
Michael P. Vogler, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A method for pre-scribing a workpiece to facilitate chip breaking when machining the workpiece on the same machine with the same tooling used for cutting, utilizing an invokable CNC cycle of the CNC machine completing the workpiece machining. The machine includes a frame, a headstock mounted on the frame, spindle fixturing supported in the headstock for holding the workpiece, a spindle fixturing drive for rotating the spindle fixturing, a rotatably indexing tool for machining having one or more cutting edges, the tool adaptable for pre-scribing the workpiece, the method including the steps of placing the workpiece in the spindle fixturing oriented in a cutting position for machining, indexing the tool down the axial direction of the rotatable workpiece with the edge of the tool in scribing contact with the workpiece on the machining surface, pre-scribing a grooved notch along the workpiece in a line pattern with the grooved notch being scribed at a depth less than the depth of the final machining depth, and, machining the workpiece to the final machining depth.