电火花线切割机恒张力控制系统的研究

为了提高电火花线切割机电极丝运动的平稳性,通常需要对其施加张紧力.张紧力的大小和张紧方式对加工质量、效率和断丝有重要影响.提出了一种新型的双贮丝筒走丝恒张力控制系统,该系统采用磁粉制动器作为张力执行元件,通过张力传感器检测张力,实现张力闭环控制.实验表明该张力控制系统对提高加工质量、减少断丝发生具有明显效果.

Study on the Constant Tension Tontrol System of WEDM Machine Tool

In order to improve the movement stability of the WEDM machine tool, the tension force is usually applied to the wire electrode. The amplitude and the way of tension play an important role in machining quality, machining efficiency and wire breakage. A new kind of constant tension control system was proposed in this paper, Two magnetic powder brakes and two wire roller are used as the tension implement to control tension in this new constant tension control system. A tension sensor, which can measure the tension of wire electrode, realizes a closed loop control system to maintain the constant tension. The structure and working principle of this kind of constant tension control system are described in detailed.