The angle at which the wiper die is set relative to the tube, as illustrated in the diagram to the right. See our technical article for a full treatment of this topic. Compare zero-rake. Also see, offset geometry and simple-sweep geometry.
FREE Tube-Bending Guide Download:
A complete guide to the principles of the 4-Step set-up for tube-bending tools
This is a printable handbook showing how to implement in four standardized steps the “forward mandrel” set-up for rotary-draw tube-bending machines and establish process control over the so-called black art. The procedure is based upon the guiding principle that the tools make the bend and takes advantage of the inserted design of modern mandrel tooling.