An experimental analysis of the mechanical and electrical power consumption of feed drive systems is presented in this paper. The main components affecting the power consumption are the motor, bearings, ball-screw, and table. The power consumption of the motor has been investigated experimentally through the study of the electrical efficiency. The efficiency has been calculated from the acquired angular velocity and supplied torque for several velocities and loads. The study shows how the working conditions of the motor heavily influence the efficiency of the motor and therefore the power consumption of the whole feed drive system. Moreover, the mechanical power consumption of each component of the feed drive has been investigated, showing that the main component responsible for the consumption is the ball-screw. Thus, in order to clarify the influence of the constructive parameters of the ball-screw on the power consumption, four kinds of ball-screws differing in the lead dimension and the preload condition have been considered. Furthermore, it clarifies the relation between the power consumption of the feed drive system and the working velocity of the table. Finally, the advantages and disadvantages of each feed drive mechanical configuration are discussed, emphasizing that the driven factor that affects the power consumption the most is the angular velocity, due to the trade-off between the motor efficiency and the mechanical power loss from the friction of the components in relative motion. This research can help the selection of the lead of the ball-screw, from an energetic point of view, in order to get higher efficiency of the feed drive.

本文介绍了进给驱动系统的机械和电力消耗的实验分析。影响功耗的主要组件是电动机，轴承，滚珠丝杠和工作台。通过研究电效率，对电动机的功耗进行了实验研究。效率是从获取的角速度和几种速度和负载所提供的扭矩计算得出的。研究表明，电动机的工作条件如何严重影响电动机的效率，进而影响整个进给驱动系统的功耗。此外，已经研究了进给驱动器每个组件的机械功率消耗，表明负责消耗的主要组件是滚珠丝杠。从而，为了弄清楚滚珠丝杠的结构参数对功耗的影响，考虑了四种引线尺寸和预紧条件不同的滚珠丝杠。此外，它阐明了进给驱动系统的功耗与工作台工作速度之间的关系。最后，讨论了每种进给驱动机械结构的优缺点，强调由于电机效率和摩擦产生的机械功率损失之间的权衡，影响功率消耗的驱动因素最大是角速度相对运动中的组件。这项研究可以从精力充沛的角度帮助选择滚珠丝杠的导程，从而获得更高的进给驱动效率。