Normal circular pitch Assignment Help

Assignment Help: >> Helical and Spiral Gears - Normal circular pitch

Normal circular pitch:

It is the smallest distance measured along the normal to the helix among corresponding points on the adjacent teeth.

From above figure

pcn  = pc  cos ψ

 But     ∴ pcn  = π mn

              mn  = m cos ψ           . . . (9.8)

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