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Machine Tool Adjustmentby Machinery Magazine
Synopses & Reviews
Post WWI era articles from Machinery magazine on machine tools and their testing and adjustment.
A fascinating article on new Drummond lathes explains their features, the design logic behind them, and photos and descriptions of quality control tests run on the lathe before shipment.
Next, from July 1919 comes a fascinating article that told British machinists how they could take their lathes almost worn out from WWI production, and restore them to factory accuracy in order to get years more life from them. Here you will learn how to make test measurements, and how to calculate how much metal should be scraped from what portion of the headstock and saddle to swing the spindle around into alignment, or lower it to make the tailstock line up, or whatever else might be needed. You get sample calculations and incredible nuts-and-bolts tips on restoring a lathe to accuracy. This one article is worth the price of the whole booklet. Amazing how-to.
Next, you get a lengthy two part article on lathe bearings. This is about older bronze, brass and even steel bushings and sleeves, not ball-or roller-bearings. These very simple bearings could give incredible performance. You get valuable tips on the advantages of one type of bearing over another, and how they could deliver years of precise work so long as they were lubricated and adjusted properly.
Finally, a short article takes you to the Pratt & Whitney factory to see lathe lead screws being tested.
Selected articles from early issues of Machinery Magazine revealing early manufacturing methods.
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