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:
Jul. 27, 1976
Filed:
Apr. 30, 1975
Ernst J Hunkeler, Fairport, NY (US);
The Gleason Works, Rochester, NY (US);
Abstract
The invention overcomes undesirable backlash effects in gear generators which cut gears by climb milling (i.e., with cutter blades rotating in the same direction as the work), these undesirable backlash effects being initiated by the intermittent cutting torques that tend to move the work momentarily ahead of the generating drive train as each blade is in the cut. Instead of a conventional spindle brake to oppose the cutting torques, an auxiliary motor in proximity to the work spindle end of the generating train applies torque to the train in the same direction as it is being driven by the main drive motor, and in the same direction as the cutting torques, thereby maintaining tightness in that portion of generating train which controls work spindle rotation by keeping the train gears with their 'coasting' sides in contact rather than trying to keep their 'driving' sides in contact.