Diameter d of spring wire
The diameter d of the spring wire is the "slimming" steel wire for making the spring. The smaller the diameter, the better the elasticity of the spring.
Spring outer diameter d
The outer diameter d of the spring is the size of the "jacket" of the spring, which determines the overall size of the spring.
Inner diameter of spring D 1
The inner diameter D 1 is the "inner" dimension of the spring, but it is actually its minimum outer diameter!
Spring diameter D2
The middle diameter D2 of the spring is the "average number" of the spring, and the calculation formula is D2 = (d+d 1) ÷ 2.
♂? t
T is the "step distance" of the spring, indicating the distance between two adjacent coils except the supporting coil.
Effective lap number n
The effective number of turns n is the number of turns that the spring keeps "in step".
Number of support laps n2
The number of supporting rings n2 is the "assistant" at both ends of the spring, which makes the spring stress more uniform.
Total laps n 1
The total number of laps n 1 is the sum of effective laps and supported laps.
Free height H0
The free height H0 is the "height" of the spring without external force, and it is also the foundation height of the spring.
Spring deployment length l
The unfolded length l of the spring is the length of steel wire required for manufacturing the spring.
Spiral direction
The spiral direction is the "rotating dance step" of the spring, which is usually right-handed.
Spring winding ratio
The winding ratio of the spring is the "figure ratio" between the middle diameter D and the steel wire diameter D, which determines the elasticity and bearing capacity of the spring.