That was Blechexpo 2023 in Stuttgart. We would like to thank the many visitors for the good and interesting discussions. Our topics at the trade fair this year were
Our highlight: we give back the feeling of pressing.
With the introduction of CNC technology for these machines, this direct feedback of the spinning process was lost. The wooden bar, which was guided by the spinning operator with his hands, is replaced here by a spinning roller mounted on a motorised axis. The presser controls the movement of the spinning roller via a control unit. In order to be able to optimally "teach" the spinning process for a workpiece into the CNC machine, the spinner now only has to look at the workpiece and perceive the vibration of the machine by ear or through direct contact with the machine for process control.
This type of process feedback is nowhere near as effective as the feedback to the hand, which also carries out the spinning process.
In order to improve this feedback, we plan to make the spinning force and the vibration acting on the spinning roller perceptible to the operator directly on the control panel of the CNC spinning machine by means of force feedback.
This will be realised by measuring the force acting on the spinning roller and then allowing the force to act on the control unit (e.g. joystick or rotary knob) in the opposite direction to that specified by the operator. This creates a retroactive force on the operator's hand, similar to the force felt when guiding the wooden stick.