Compression Springs - Modified Design Dialog Box (AutoCAD Mechanical Toolset)

Material

Specifies required material in accordance with the selected standard

Wire diameter d

Specifies wire diameters in accordance with the selected standard.

Outer Diameter Da

Enter a value for either the Outer Diameter Da, or index ratio Dm/d, where Dm is mean coil diameter, d is wire diameter of the spring.

Unloaded Length L0

Specifies the unloaded length of the spring. If the spring is specified by the force and deflection, the minimum permissible length L0 is calculated and displayed. If the spring is specified by the force and loaded length, the maximum permissible length L0 is calculated. If the spring is specified by 2 forces and 2 lengths there is only one possible length L0, which is automatically calculated.

Helix Direction

Select one of two spring helix directions: Right, or Left.

End Coils

Enter a required number of end coils together for both spring ends.

Closed Ends

Use this check box to define closed or open ends of spring.

Spring end shapes button

Click on the spring end picture and from the Type of Ends dialog box select the required spring end type. There are three types of compression spring ends: Ground, Round and Forged.