The motion control of profile milling flying saw based on controller MC206
The profile milling flying saw is able to achieve cut-to-length on moving circular and square pipe, this article highlighted the specific application of the controller MC206 in controlling the motion of the profile milling flying saw and completed the design of the corresponding program using Motion Perfect2 software, which is supported by the controller. Introduce the controller MC206 to the control system of profile milling flying saw is not only be able to achieve the continuous cutting on moving pipes with various shapes, but also increase the cutting speed and accuracy.
The S-curve motion analysis of servo flying saw's chasing segment
To meet the requirements of high-speed, high-precision servo flying-saw development, this article highlighted a new curve motion in the chasing segment of Flying Saw—the “S”-shape curve motion. Under the control of computer, the flying-saw accelerates with “S”-shape curve and the overshoot is reduced while the system is responding, thus ensuring that large vibration will not be caused during the transition from chasing movement to synchronous movement and improving the length accuracy of welded pipe.
An Algorithm for High-Speed Control of Machine Tools
Experiments are performed for end-milling aluminum at 15,000 RPM spindle speed (1,508 m/min cutting speed) and up to 3 m/min table feedspeed using an eexperimental machine tool control system. A digital feedforward controle for feed drive control is designed based on the zero phase error tracking controller (ZPETC), using a model derived from a frequency-weighted identifcation of the closed-loop plant. The controller achieves near-perfect (± 3 ¿m) tracking over a 26 mm trajectory with a maximum speed of 2 m/min. The maximum contouring error for a 26 mm diameter circle at this speed is less than 4 ¿m. Tracking and contouring experiments are conducted for table feedspeeds as high as 10 m/min. Frquency domain analysis demonstrates that the feedforward controller achieves a bandwidth of 10 Hz without phase distortion. In a direct comparison of machining accuracy, the experimental controller demonstrates a significant improvement over an industrial CNC, as measured by a coordinate measuring machine.