Step 3.) Gather the Correct Tooling
At Acxess Spring, we make compression springs using a CNC machine. The tools required and their function on the CNC are the following:
Feed Rolls: The feed rolls are those two rolls shown in the images provided. These roll simultaneously to feed the wire from the first wire guide to the second wire guide. This tool is selected accordingly to the wire diameter.
Wire Guides: There are two wire guides. One before the rolls, and the other after the rolls. The second wire guide feeds the wire towards the arbor to begin shaping the coils. This tool is also selected based on the wire diameter.
Arbor: The arbor is the half-moon-shaped pin which the wire goes under and around once it has hit the coiling points. This tool is selected based on the compression spring’s inner diameter.
Coiling Points: The coiling points are two pins which shape and form the coils by interfering on the spring wire’s straight path and slightly making a continuous bend.
Pitch Tool: The pitch tool is a bar that slides up and down to also interfere with the now coiled wire. This pushes the coil out to make pitch.
Cutter: The cutter comes down once the spring is formed and cuts the wire where the last coil ends therefore completing the process.