Optimizing the way kinematical feed chains with great distance between slides are chosen for CNC machine tools

5th ModTech International Conference - Modern Technologies in Industrial Engineering

Lucian, P.^1 ; Gheorghe, S.^1

Vasile Alecsandri University of Bacau, Department of Industrial Engineering, Calea Marasesti Street, No. 157, Bacau

600115, Romania^1

关键词: Aviation industry;    CNC machine tools;    Computer numerical controlled;    Drive structures;    Machining Process;    Parallel control systems;    Precision machining;    Synchronous motion controls;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/227/1/012076/pdf
DOI  :  10.1088/1757-899X/227/1/012076

来源: IOP

【 摘 要 】

This paper presents a new method, based on FRISCO formula, for optimizing the choice of the best control system for kinematical feed chains with great distance between slides used in computer numerical controlled machine tools. Such machines are usually, but not limited to, used for machining large and complex parts (mostly in the aviation industry) or complex casting molds. For such machine tools the kinematic feed chains are arranged in a dual-parallel drive structure that allows the mobile element to be moved by the two kinematical branches and their related control systems. Such an arrangement allows for high speed and high rigidity (a critical requirement for precision machining) during the machining process. A significant issue for such an arrangement it's the ability of the two parallel control systems to follow the same trajectory accurately in order to address this issue it is necessary to achieve synchronous motion control for the two kinematical branches ensuring that the correct perpendicular position it's kept by the mobile element during its motion on the two slides.