th-heights of the hob are the same, each hob-tooth gen-erates, roughly, a flat in the tooth-form. If any of theteeth in the hob is high, a wider flat will be produced asshown in Fig. 9. Should the tooth-heights be correct andthe hob be mounted in the machine with a run-out, aleaning tooth can be… … ^rlTzo it> «<i 4> » TO » So loo lib IB Fig.
Automobiles · Aeronautics
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