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Why are helical gears more difficult to do than spur gears?

Why are helical gears more difficult to do than spur gears?
Release time：
2018-11-21 14:32
Whyarehelicalgearsmoredifficulttodothanspurgears?(1)Moldprocessingfactors.Thestraighttootheddieringcanbecutbyhighprecisionslow-movingwire,thequalityofwhichisveryhigh,especiallyinsurfaceroughnessandcut
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