Spring Information and Design
Specifications
Helical (wound in a round shape) springs of round wire will need a description to define the Coil Diameter, Wire Size, Number of Coils, and a Type of End. The Coil Diameter could be specified as an Outside Diameter (O.D.) , or Inside Diameter (I.D.) or even the Mean Diameter (average of O.D. & I.D. used for calculations). The Wire Diameter and Number of Coils may be defined in another way than actually calling out the size and count. An example is by calling out a rate or known fixed load or torque requirement. But if known it is best to at least list Wire Size and Coil count as a reference.
Online Designer
Compression Springs
Extension Springs
Known Load
Known Load: If you have a known load required at a known length, this is the best way to specify the spring. If you also specify the length inside of the Hooks (very common like the free length of a compression spring) then you have established a functional rate. Now we may use the coils that give you the load you need.
If you don't have specifications or a print to send, contact us and we can walk through the specifications with you.
Torsion Springs
Arm Position
Arm Position: This detail is very important for the production of this spring form.
Torsion springs are very difficult to communicate without a print or detailed drawing. If you don't have specifications or a print to send, contact us and we can walk through the specifications with you.
Compression Springs
Known Load, Rate & Type of Ends
Known Load: If you have a known load you require at a known length this is the best way to specify the spring. If you also specify the free length of the spring(very common) then you have established a functional rate. The spring manufacture can use the coils that give you that load.
Rate: If you do not have or do not know the fixed place the spring is used, then specifying a Free Length and a Rate will give you a more consistant spring then specifing the coils.
Type of Ends: Compression springs can have four basic types of ends. Closed ends are almost always used in commercial applications. For many applications closing and additional grinding the spring is used. This can give good squareness and better load tolerances but is often an expensive option, so should be considered but not always assumed.
If you don't have specifications or a print to send, contact us and we can walk through the specifications with you.