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How to make a spring with thin ends and thick middle?
"Spring with thin ends and thick middle" is a convex spring product. I'm manager Li who started the spring machine. I have been engaged in CNC spring machine industry for many years. In the process of debugging the spring press, I used a variable diameter cam to control the outer diameter of the product. The variable diameter cam determines the forming position of the curve gauge, which determines the forming outer diameter of the spring product.