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:
Jun. 22, 1976
Filed:
Oct. 06, 1975
Ernst J Hunkeler, Fairport, NY (US);
The Gleason Works, Rochester, NY (US);
Abstract
Large, coarse pitch gears are cut by a method utilizing incremental plunge-fed or incremental generation motions and a special circular face-mill type cutter having cutting blades spaced apart from each other at angular distances selected so that, when cutting a tooth slot, there can be intervals during the rotation of the cutting tool when no blade is engageable with the workpiece. It is only intermittently, during these short, no-cutting intervals, that required plunge feed or generating motions are made. At other times, i.e., when one or another of the cutting blades is engaged with the workpiece, the machine elements which are moved intermittently relative to each other to provide in-feed or generation, e.g., the oscillating cradle, rotating work-head, and sliding base, are all rigidly clamped to the machine base and to each other. In the preferred embodiment of the machine for carrying out this method, clamping means including the sliding base as well as overhead tie-bar arrangements straddle the workpiece and cutter to achieve exceptional rigidity.