Abstract: A spring coiling machine has a rotary feed assembly with a servo motor for driving the feed rolls mounted therein and forming a part thereof. Substantially all tooling including a coiling tool, a pitch tool and an auxiliary arbor are also servo motor operated with three axes of servo control provided for the coiling tool. The auxiliary arbor has a plurality of wire forming positions and is also servo motor controlled.

Abstract: A spring coiling machine has a feed assembly with a servo motor for driving the feed rolls. Substantially all tooling including a coiling tool, a pitch tool and an auxiliary arbor are also servo motor operated with three axes of servo control including a "torsion" axis provided for the coiling tool. The auxiliary arbor has a plurality of wire forming positions and is also servo motor controlled. The "torsion" movement for the coiling tool is controlled by a servo motor-cam mechanism for accurate high speed operation with a high frequency of torsion movement of the coiling tool.