This study presents a novel real-time NURBS surface motion command generator which ensures a constant CC velocity along the CC paths and its intervals. The advantage is that the machining performance can be improved significantly. To achieve the goal of multi-axis synchronous motion, this study develops a PC-based real-time motion control network utilizing SSCNET. In this study, both the NURBS surface motion command generator algorithms and the SSCNET communication protocols are realized by Windows XP with the RTX 6.0 real-time kernel. The experimental results confirm that the proposed real-time NURBS surface motion command generator is capable of achieving a satisfactory performance.