How to distinguish between real and fake five-axis simultaneous machining centers?

What is a "fake" five-axis simultaneous machining center and what is a "real" five-axis simultaneous machining center?

In fact, both "real" and "fake" five-axis machining centers can be referred to as "five-axis machines". They all include three linear axes and two of the rotary axes that rotate around these three linear axes. Moreover, both "real" and "fake" five-axis machining centers can achieve "five-axis simultaneous control". Therefore, whether they can achieve five-axis simultaneous control is not the criterion for distinguishing between "real" and "fake" five-axis machining centers. The RTCP (Rotation Tool Center Point) function of the CNC system is the key to distinguishing between "real" and "fake" five-axis machining centers. Furthermore, the RTCP function is a key technology for five-axis machines and an essential feature for high-end five-axis CNC machine tools. For more details, see: What is a high-end CNC machine tool? Some high-end CNC systems overseas, such as Fanuc, Siemens, Fidia, and NUM, already have the RTCP function, but their core algorithms are confidential. Some CNC machine tools in China, like those from Huazhong, Guangzhou Numerical Control, and KED, have also implemented the RTCP function. Fidia's RTCP stands for "Rotation Tool Center Point", which literally means "rotating tool center point". It can also be understood as "rotating around the tool center" or "programming around the tool center". Besides RTCP, there are also terms like TCRP (Tool Center Point Management) and TCPC (Tool Center Point Control). Although the names are different, their purposes are the same, so they can be collectively referred to as the RTCP function. [1]