Machine-shop tools and methods by Leonard William Samuel 1856-

Author:Leonard, William Samuel, 1856- [from old catalog]
Language: eng
Format: epub
Tags: Machine-tools, Machine-shop practice
Publisher: New York, John Wiley & sons, inc.; [etc., etc.]
Published: 1919-03-25T05:00:00+00:00

Ficj. 407.

ing the angle formed by the two cutting-edges of the tool shall be at right angles to the axis of the work. Figs. 407, 40S, and 409 show the methods of setting these tools. Fig. 407 is the simplest case. In this figure we have a cylinder of uniform diameter upon which it is required to cut V threads. The cylinder is, of course, adjusted with its axis parallel to the lathe-shears, and the gage C has the 60° V groove so formed in relation to its parallel sides as to conform to the conditions above expressed respecting the point of the lathe-tool. It is obvious then that, if the tool be adjusted to correspond with the groove in C, the latter being held against the side of the cylinder as shown, the tool will be properly adjusted in relation to the work. Fig. 408, which

MACHINE-SHOP TOOLS AND METHODS

shows the same principle applied to internal work, will be sufficiently clear without further explanation.

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C—Centre Gauge

Fig. 408.

Fig. 409 shows the method of setting the tool for a tapering screw. In this case it will not do to use the gage against the side of the blank,

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