Backlash Decrease System of Reducers/Gearboxes in Feed Kinematical Linkage Structure of CNC Machine Tools

4th ModTech International Conference - Modern Technologies in Industrial Engineering

Stan, G.^1

Department of Industrial Engineering, Vasile Alecsandri University' of Bacau, 157 Calea Marasesti Street, Bacau

600115, Romania^1

关键词: Closed loops;    CNC machine tools;    Kinematic linkage;    Position loops;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/145/5/052009/pdf
DOI  :  10.1088/1757-899X/145/5/052009

来源: IOP

【 摘 要 】

Feed kinematic linkages of the CNC machine tools are built in camted cycle (closed loop) and their structures include reducers/gearboxes. as well. Because of the mechanical backlash between the flanks of the teeth of gearings, disturbances occur in the performance of a kinematic linkage as a whole (in terms of speed and position loops), thus leading to instability. This work presents a new system for decreasing the mechanical backlash that is based on a new type of cylindrical gearings with tapered teeth, allowing the backlash adjustment between the flanks of the joint teeth. The modality of acting in terms of decreasing the backlash on a reducer in the structure of a feed kinematic linkage is also detailed.