Facilities afforded by Mahr 891 automatic gear test machines include inspection of involute profile, helix angle, base circle diameter, pressure angle, and surface finish at unlimited number of cross sections; even dimensions of unknown gear can be established by measuring it on this machine; base and helix angle are set optically, and adjustments are infinitely variable; setting takes no more than 5 min, and it is easy to achieve accuracies of 0.00005 in.
Automatic gear test machine
Automobile Engr
Automobile Engineer ; 58 , n 7
1968
2 pages
Aufsatz (Zeitschrift)
Englisch
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