Bending machine has programmable angle control and automatic springback compensation

The hydraulically actuated Stierli Bender 300 CNC/WP bending machine, manufactured by Swiss company Stierli Bieger, has programmable angle control and automatic springback compensation Data such as material type and dimensions, as well as required angles and leg lengths, can be entered simply and quickly at the control which is capable of storing 200 programs each with up to 10 bend positions. To assist the operator, the control even indicates when a workpiece needs to be turned. Operation is by a remote handheld control or foot pedal. Bending stroke is programmable to 300 mm and includes an allowance for springback of the material. Bending force, variable between 30 and 300 kN, is also calculated automatically by the software as is the length of material needed to produce the part. The programmed stroke can be adjusted in ±0.1 mm steps at any time to take account of material variations. The die holder has a height of 200 mm and the punch tool holder is 80 mm in diameter, allowing a variety of work to be undertaken with simple and rapid tool interchange. A spacious work platform gives stability when bending larger components. Installed weight of the machine is 900 kg and footprint is 1,250 x 850 mm.