1. Measure the wire diameter of your spring wire (understanding the diameter of the spring wire is very important, different line diameters will use different spring machines) 2.What kind of line diameter is the spring (such as twist springs, crushing spring, butterfly, alien, etc. Different springs will use different spring machines)3. Spring specifications (such as wire diameter, inner diameter, outer diameter, number of circles, active circles, spacing, feet length, angle, etc.)4. Based on the estimated daily output and monthly output, the purchased CNC spring machine needs to meet the daily production of the product. The most important point of the CNC crushing machine type matching is: spring model, wire diameter, outer diameter, inner diameter, number of circles, etc. If a spring has several outer diameters, it is a multi -diameter spring, using a multi -axis spring machine. If it is a straight barrel -shaped spring, the two -axis crusher spring machine is used.