The preferred method of setting up a rotary-draw tubebending machine in which the mandrel nose is used to fullest effect to control the flow of material at the point of bend. Sometimes this is called the “forward-mandrel, low-pressure” set-up because forward placement of the mandrel permits the machine operator to lower the direct pressure, thus reducing drag at the point of bend.
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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.