Elementary Machine Shop Practice As Adapted to Its Teaching in Technical Schools
Elementary Machine Shop Practice As Adapted to Its Teaching in Technical Schools
Theron Josiah Palmateer
The book Elementary Machine Shop Practice As Adapted to Its Teaching in Technical Schools was written by author Theron Josiah Palmateer Here you can read free online of Elementary Machine Shop Practice As Adapted to Its Teaching in Technical Schools book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Elementary Machine Shop Practice As Adapted to Its Teaching in Technical Schools a good or bad book?
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To provide a rest for the scraper a tool is clamped in the tool-post and as close as possible to the surface being scraped. A scraper is usually made from an old file ground smooth on the two sides and with a little clearance at the end. FINISHING TAPER To finish the taper, set the compound rest at an angle of 30 degrees with the axis of the lathe. Such a rest is normally 'at right angles with the lathe axis so that it must be turned through 60 degrees to cut the 30 degree angle. A regular turn...ing tool may be used to finish this angle, but it should be set so that the straight side will be nearly parallel with the tapered surface. If the lathe is not provided with a compound rest, the angle may be cut with the side of a tool set at the proper angle. To set this tool, use the thread and center gauge, as shown in Fig. 26. In case the angle is any other than 30, or 60 degrees, it is necessary to set the tool with a bevel and bevel protractor. After the taper has been cut, it may be finished smooth by scraping with a lathe scraper in very much the same manner as shown in Pig.
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