Another method of modeling a TRUE Involute Spur Gear in Solidworks

grabcad

This Gullet-first-tooth calculation utilizes user inputs of Diametrical Pitch, Number of Teeth, and Pressure Angle to derive additional values such as Addendum, Dedendum, Working Depth, Whole Depth, Clearance, Tooth Thickness, Circular Pitch, Pitch Circle (Pitch Diameter), Outside Diameter, Fillet, Addendum Circle (Addendum Diameter), Dedendum Circle (Dedendum Diameter), Base Circle (Base Diameter), Pitch Angle, Alpha, Beta, and Phi for use in a Solidworks model. The involute form's first curve is defined by the equation driven parameters based on these values, while the second curve follows a similar structure but with a negative 't'.