Large gear manufacture

Details Large gear manufacture Large gear manufacture

1975-10-06

1976-06-22

Weidenfeld, Gil

90 3, B23F 910

Patent

active

039643697

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.

REFERENCES:
patent: 2895385 (1959-07-01), Carlsen et al.
patent: 2913962 (1959-11-01), Carlsen et al.

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