Both Shengyuheshengliang and the linear motor make the ball screw very awkward
time£º2019/5/14 click£º5823
Both Shengyuheshengliang and the linear motor make the ball screw very awkward. Among the four famous works, the small editor particularly likes the Romance of the Three Kingdoms. There are many famous quotes in it that are still fresh in mind. "Don't do it with small things, don't do it with small things, don't do it with small things." In the martyrs 'years, the heart was strong. "I would rather teach me to lose the world and teach the world to lose me" ... This is also the famous sentence for the Chinese language exam in primary and secondary schools. Among them, "Shengyuheshengliang" on the one hand highlights Zhuge Liang's strong and noble strategy, and on the one hand, he also recognizes Zhou Yu's own ability.
In the field of servo systems, ball bars and linear motors are a kind of "Shengyuheshengliang" relationship. Before the linear motor appeared, the ball screw could be said to cover all the traditional manufacturing industries such as CNC machine tools. A few decades ago, the machine tools were guided by sliding guide rails and driven by silk bars. The friction of this component is relatively high(the efficiency of the wire bar is about 60 % according to different pitch, different lubrication characteristics and different thread shapes). Through the wire bar, the rotation is converted into a straight line motion, and the wire bar is connected to the DC motor(previously, using a DC step motor) through a coupling to provide power to the spindle of the machine tool. The controller converts the program instructions into corresponding three-coordinate motion or multi-axis motion. Since the speed and accuracy at that time were quite low(usually 100 to 200 m/min, requiring a repetition accuracy of 0.001 in, 1 in = 0.0254 M, the same below), the type of element with a higher coefficient of friction is also acceptable.
However, with the advent of linear motors and the continuous improvement and improvement of their performance, the situation of ball rods is increasingly embarrassing. Linear motors are a kind of transmission that converts electric energy directly into linear motion mechanical energy without the need for intermediate conversion mechanisms. device, It is manufactured using the principle of magnetic induction when the coil passes through the magnet. Since the current size and phase in the coil change at any time, the coil and the magnet move in opposite motion and do not contact each other, so there is no friction between the transmission components., So high speed can be generated. Nowadays, the technology of linear motor has become more and more mature, and the price has been continuously reduced. It can be predicted that the application of ball screw bar in CNC machine tools will gradually decrease, the market is very cruel, and the fittest survive, and the exit from the historical stage will eventually exit.
Kunshan Tongmao Electronics Co. Ltd. is located in the industrial city of Kunshan, with good geographical conditions and convenient transportation. It is an industry R&D and manufacturer that provides straight line and swing motion solutions. Its main products are coil motors and linear Motors. Tongmao can provide a linear coil motor with a peak value of 5000N and a stroke of 300mm. Can provide a swing coil motor with a peak value of 50NM and a swing angle of 120 degrees; A linear motor with a continuous thrust of 700N can be provided.
This article originated from the original company of Kunshan Tongmao Electronics Co., Ltd.(www.tmmotion.com). Please indicate the source.
Linear motor