When referring to pipe sometimes the wall thickness is defined by gauge rather than mm or inches. Can be reduced by using better lubricants, alternate materials, or a slow arm rotation may help. Occurs when stainless steel is bent with a steel mandrel or wiper die or when aluminum is bent with aluminum-bronze tools. The transference of one material to another caused by high pressure and friction. The tube stands vertically when placed into the bend die. Refers to the direction of bend for rectangular tubes.
When bending rectangular tube, if the tube stands vertically in the bend die, this is known as bending the “easy way”. The distance between the tangent of one bend and the tangent of another bend. The centerline radius divided by tube or pipe outside diameter. Tooling is expensive but more practical than short grip sections in high production applications. Tooling that has very short DBB (distance between bends) requires that the bend die grip section and the clamp die have the previous bend machined into them. Surface treatment to bend die grip sections and clamp dies to help prevent tube slippage. Used only with interlock tools in high precision aerospace applications minimizes tool marks from the bend die in ultra thin wall applications. Tooling in which the groove in the bend die and wiper die is deeper than half the diameter of the tube. Radius around which the tube is to be bent, referencing the centreline of the tube. 1/ the height of the centre of the tube groove from the floor and 2/ the height from the bottom of bend die to the centre of the tube groove on the die. On rotary draw tube bending machine the rotation of the bend arm swing.Ĭentre line height can be one of two things. Here you will find a list of commonly used tube bending terms to help you get to grips with the basic concepts.ĬCW (Counter clock wise or left-hand rotation) Tube bending can be one of the most complex industries there is.
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