24.3.
Cone Clutch
In a cone clutch the contact surface between the driving and driven members forms a part of the cone. The effectiveness of the clutch is increased due to wedging action of the cone so that the normal force on the lining increases. This increase in normal force results in increased torque. Considar an elemental ring at a radius r running around the cone (Fig. 24.4), the radial width of which is dr and width parallel to conical surface is dw.
where, N is rpm of the engine and T is shaft torque in Nm.
Example 24.3. A cone-clutch with a cone semi-angle of 12 is to transmit 11.19 kW at 750 rpm. The width of the face is 114th of the mean diameter and the normal pressure between the
contact faces is not to exceed 8.27 x 104 Pa. Allowing the coefficient of friction of 0.2, determine the main dimensions of the clutch and the axial force required.
