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Showing papers on "Gear shaping published in 1954"


Patent
18 May 1954
TL;DR: In this paper, a gear shaping machine consisting of a tool connected directly to a slide 54 for reciprocating it and having teeth for cutting in both directions, formed on a rigid portion connected to a rigid support-portion by a flexible web, and a reciprocable member 52 engaging the toothed portion to move it between strokes to cutting position.
Abstract: 763,852. Gear-cutting. FELLOWS GEAR SHAPER CO. April 20, 1954, No. 11378/54. Class 83 (3). A gear shaping machine comprises a tool connected directly to a slide 54 for reciprocating it and having teeth for cutting in both directions, formed on a rigid portion connected to a rigid support-portion by a flexible web, and a reciprocable member 52 engaging the toothed portion to move it between strokes to cutting position. The work W is rolled by a master gear 26 and rack 28 and the cutter 75 is reciprocated on a horizontally-adjustable slide 30 in a manner similar to that described in Specification 685,084. The cutter is reciprocated by an adjustable crank 36 which carries a cam 64 shaped to give a relative movement between the member 54 carrying the rigid portion 76 of the cutter, and the member 52 engaging, with or without clearance, the toothed portion 74 of the cutter. The relative movement occurs at each end of a stroke to flex the cutter to cutting position. In a modification, work W3, Fig. 5, is rotated by a master gear 158 and a rack 152 having a back-lash-eliminating portion 156. A rack-cutter 174 is mounted on the end of a slide 162 reciprocated by a crank 168. The cutter is flexed by upward or downward movement of fingers 186, 190 on an assembly 184, 188, 202 carrying a cam follower 226. The follower engages a cam slot 224 in a member 208 rocked about a pivot 220 by fixed cams 230, 232. Specifications 655,251 and 655,294 also are referred to.

2 citations