EVEN though we are in the age of CNC machinery, the old phrase "the tools make the bend" is as relevant today as ever. As tube bending applications have become more extreme, tooling design, setup, and maintenance have returned to a position of central importance. In rotary draw bending, four simple setup steps, executed precisely and in the correct order, will help you maximize bend quality, tool life, and process control. Many tube bending machine operators rely on machine features more than they should. Modern features on tube benders, especially pressure die assist, permit many operators to obtain adequate results without mastering tooling setup. Many controls on CNC bending machines were devised to make difficult applications practical. Many operators use these controls to overcome the limitations of poor setup practices on routine applications.
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