Gear-hobbing machines : data sheet 362 , 1978 revision

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      <subfield code="a">The function of gear hobbers is to cut and generate worm, spur, and spiral gears on a high production basis. These gears are commonly made of cast iron, steel, fiber, plastic, wood, and brass. This paper reports general precautions for loading and operating these machines</subfield>
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      <subfield code="g">Vol. 117, nº 1, January 1978 ; p. 63-65</subfield>
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