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:
Apr. 02, 2002
Filed:
Jun. 06, 2000
Christopher L. Greenwald, Concord, NH (US);
Jeffrey P. Hastings, Hanover, NH (US);
Pro-Cut Licensing, LLC, West Lebanon, NH (US);
Abstract
A disk brake lathe has a pair of tool bits mounted to tool holders which are translatable parallel to a lathe axis to adjust the separation of the tool bits from a brake disk. A displacement gauge responds to changes in the separation between the tool holders. When the tool bits are in continuous contact with the disk, the separation indicates the thickness which would result from machining the disk. This separation can be compared to a specification to determine whether to machine or discard the disk. A method for machining a disk starts by mounting and aligning the lathe to a wheel hub on which the disk is mounted. The tool bits are each advanced until they are in continuous contact the disk surfaces, when the separation of the tool bits is measured and preferably compared to a specification. When the tool bits are sequentially advanced, variation in the separation can be used to determine depth of cut for each tool bit. A system employing a brake lathe has a microprocessor which receives signals responsive to the separation between the tool bits of the lathe. One or more contact sensors indicate contact of the tool bits with the other tool bit or the brake disk, and the microprocessor can implement instructions to practice the above method. A surface displacement gauge can be employed to allow the system to measure the thickness and lateral run-out of the disk prior to machining.