Heavy-load Nonapod: A novel flexible redundant parallel kinematic machine for multi-DoF forming process

F Zheng, S Xin, X Han, L Hua, W Zhuang, X Hu… - International Journal of …, 2024 - Elsevier
The high-performance multi-DoF forming process (MDFP) necessitates a 6-DoF forming
machine tool with high normal and lateral stiffness to bear large normal and lateral forming …

[HTML][HTML] Calibration of a Hybrid Machine Tool from the Point of View of Positioning Accuracy

S Tabakovic, M Zeljkovic, S Zivanovic, A Budimir… - Applied Sciences, 2024 - mdpi.com
The development of machine tools in the last twenty years includes, among other things, the
application of mechanisms with a non-linear kinematic structure as the mechanical basis of …

[HTML][HTML] Sensor-Based Identification of Singularities in Parallel Manipulators

JL Pulloquinga, M Ceccarelli, V Mata, A Valera - Actuators, 2024 - mdpi.com
Singularities are configurations where the number of degrees of freedom of a robot changes
instantaneously. In parallel manipulators, a singularity could reduce the mobility of the end …

Experiments of vacuum vessel in-situ milling via mobile parallel robot machine

J Li, Y Cheng, H Ji, H Pan, Y Yang, X Zhang… - Fusion Engineering and …, 2024 - Elsevier
The vacuum vessel, as a type of ultra-large structural component, is prone to dimensional
deviations and welding cracks during the manufacturing process, making high-precision …

Analysis and Experiment of Thermal Field Distribution and Thermal Deformation of Nut Rotary Ball Screw Transmission Mechanism

H Yu, X Luan, G Zheng, G Hao, Y Liu, H Xing, Y Liu… - Applied Sciences, 2024 - mdpi.com
This study designs a differential dual-drive micro-feed mechanism, superposing the two
“macro feed motions”(“motor drive screw” and “motor drive nut”) using the same …

Enhanced Kalman Filter Methods for End Pose Measurement of Parallel Kinematic Machine Considering Error Sensitivity

X Han, Y Liu, FY Zheng - Available at SSRN 4835847 - papers.ssrn.com
For robust accuracy, this paper proposes a parallel measurement method for parallel
kinematic machine (PKM). It consists of an indirect measurement using grating ruler and a …