Synopsis
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is turally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
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Présentation de l'éditeur
Pictures are a great help in understanding a machine shop operation. It is often possible, with a few halftones, to convey ideas that would require many pages of written matter to express them. In the present pamphlet advantage has been taken of this facility of the photograph to express ideas, so that a long story has been told in comparatively few words. While the process of forming the teeth of a bevel gear, by milling them with a rotary cutter, is not easy to describe without telling how to make a drawing of the blank, it seems best to leave the designing and drawing for a treatise more particularly dealing with this subject alone. The average apprentice approaches the problems of the maG ear 36 Teeth Pinion 21 Teeth Involute 6P itch hinery ff. f. Fig. 1. Essential Dimensions of the Gear to be Cut chine shop with hardly enough knowledge of the art of making drawings to enable him to read them, to say nothing of making them. The DrawingF ig. 1represents the drawing of a bevel gear and its pinion, as it is given to the workman. It is to be noted that draftsmen are not all bound by the same conventions, but this drawing is as it would be made by at least one large firm who cuts many bevel gears. All dimensions other than those necessary to our description have been omitted to avoid confusion. The description will, therefore, be confined to those operations bearing upon the subject at hand, and will show what, in the authors estimation, should be the best order of operation to insure accuracy, convenience, and speed. In machining MACHINERY, October,
(Typographical errors above are due to OCR software and don't occur in the book.)
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