How to adjust the outer diameter of spring in the production of spring machine is very important. 1. Spindle grinding: in the double ejector spring machine, the spindle only plays the role of cutting the edge of spring, so it is sometimes called core knife. Its grinding is relatively simple. The outer diameter of the spindle should be less than the inner diameter of spring, but it should not be too small. Otherwise, the spring will have a flat head when cutting, The clearance between cutter and mandrel should not be too large

2. 3. Adjustment of feeding length and total number of turns: the feeding length depends on the number of teeth of the selected gear. For the spring winding machine with incomplete gear feeding, the number of teeth of its incomplete gear is controlled, Spring expanding length, gear tooth number (z) = spring expanding length (mm) / feeding coefficient, spring expanding length (L) = (spring outer diameter steel wire diameter) ¡Á ¡Ç ¡Á Total number of turns