Tooth shape: rectangular.
Tooth inclined angle β1 = 0 deg., β2 = 45 deg.
Angle between rack moving directions: γ = 45 deg.
Displacement relation: s2 = s1.cosβ1/cosβ2 = 1.41s1
For more, see
http://www.meslab.org/mes/threads/22768-Truyen-dong-thanh-rang-thanh-rang
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