滚珠丝杠是机床和精密机械中 常用的传动部件。其主要功能是将旋转运动转换为直线运动，或将扭矩转换为轴向重复力，具有高精度，可逆性和率的特点。自滚珠丝杠开发以来，它已广泛应用于精密机床，工业机械，电子机械，输送机械等各种工业机械的定位精度控制。

Ball screw is a common transmission part in machine tools and precision machinery. Its main function is to convert rotary motion into linear motion or torque into axial repetitive force. It has the characteristics of high precision, reversibility and high efficiency. Since the development of ball screw, it has been widely used in precision machine tools, industrial machinery, electronic machinery, conveying machinery and other industrial machinery positioning accuracy control.

直线电机，也称为直线电机，是各种领域制造商常用的一种机械设备。通过将它们安装在生产设备上，可以为企业的生产线提供高速自动直线运动，可以有效提高企业的生产能力。直线滑台电机的特点是直线运动，而滚动螺杆和旋转电机间接产生直线运动。

Linear motor, also known as linear motor, is a kind of mechanical equipment commonly used by manufacturers in various fields. By installing them on the production equipment, it can provide high-speed automatic linear motion for the production line of the enterprise, which can effectively improve the production capacity of the enterprise. Linear slide motor is characterized by linear motion, while rolling screw and rotary motor produce linear motion indirectly.

导轨丝杠

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让我们导轨丝杠小编对这两者的主要特征进行一些比较：

Let's compare the main features of the two

1、速度，直线电机在速度方面具有相当大的优势。直线电机的速度为300m / min;加速度为5G。滚珠丝杠的速度为100m/min。从速度和加速度的比较来看，直线电机具有相当大的优势，并且直线电机在成功解决加热问题后将进一步提高速度，并且"旋转伺服电动机+滚珠丝杠"的速度受到更多限制。很难改进。在动态响应方面，由于运动惯性和间隙以及机构复杂性等问题，直线电机具有的优势。

1. Speed, linear motor has a considerable advantage in speed. The speed of the linear motor is 300m / min and the acceleration is 5g. The speed of ball screw is 100 m / min. From the comparison of speed and acceleration, the linear motor has considerable advantages, and the linear motor will further improve the speed after successfully solving the heating problem, and the speed of "rotary servo motor + ball screw" is more limited. It's hard to improve. In terms of dynamic response, linear motor has absolute advantages due to the problems of motion inertia, clearance and mechanism complexity.

2、在速度控制方面，直线电机响应速度更快，速度范围更宽， 高可达1:10000,可以在开始时达到 大速度，并且可以高速快速停止。

2. In terms of speed control, the linear motor has a faster response speed and a wider speed range, up to 1:10000, which can reach a large speed at the beginning and stop at a high speed.

导轨丝杠

Guide screw

a、准确性，在精度方面，直线电机由于传动机构而具有简单的内插滞后减小。通过位置检测反馈控制，定位精度，再现精度和精度高于"旋转伺服电机+滚珠丝杠",并且易于实现。 旋转伺服电机+滚珠丝杠"是一种增压传动部件。当提供相同的扭矩时，线性马达消耗的能量是"旋转伺服马达+滚珠螺杆"的两倍。而且，直线电机的可靠性受控制系统稳定性的影响，对周围环境影响很大。因此，必须采取有效的磁隔离和保护措施来阻止磁场对滚动导轨的影响和铣屑磁尘的吸附。

a. In the aspect of accuracy, the linear motor has a simple interpolation lag reduction due to the transmission mechanism. Through the position detection feedback control, the positioning accuracy, reproduction accuracy and absolute accuracy are higher than that of "rotary servo motor + ball screw", and easy to realize. "Rotary servo motor + ball screw" is a kind of energy-saving supercharging transmission parts. When providing the same torque, the energy consumption of linear motor is twice that of "rotary servo motor + ball screw". Moreover, the reliability of the linear motor is affected by the stability of the control system, which has a great impact on the surrounding environment. Therefore, effective magnetic isolation and protection measures must be taken to prevent the influence of magnetic field on rolling guide rail and the adsorption of milling dust.

b、直线电机噪音低，因为直线电机不受离心力的约束，运动过程中没有机械接触，没有摩擦和噪音。传动部件不磨损，可大大减少机械损失，避免拖缆，电缆，齿轮，皮带轮产生的噪音，提高整体效率。经过长时间的使用，滚珠丝杠在滚珠表面剥落，或滚珠丝杠轴有切割力表面的问题，间接影响滚珠的运行轨迹，造成滚珠间的摩擦，螺母和轴引起振动。这样噪音太大了。

b. The noise of linear motor is low, because linear motor is not constrained by centrifugal force, there is no mechanical contact, friction and noise in the process of movement. The transmission parts are not worn, which can greatly reduce the mechanical loss, avoid the noise generated by the streamer, cable, gear and pulley, and improve the overall efficiency. After a long time of use, the ball screw peels off on the surface of the ball, or the ball screw shaft has cutting force on the surface, which indirectly affects the trajectory of the ball, causing friction between the balls, and vibration between the nut and the shaft. It's too noisy.

导轨丝杠

Guide screw

c、行程：直线电机有效行程无限制，滚珠丝杠的螺母运行到有效行程后，仍然可以正常旋转，但在正常情况下，不能过度旋转，否则会损坏滚珠丝杠，导致大量的滚珠颗粒和螺母掉落关闭。

c. Stroke: there is no limit to the effective stroke of linear motor. The nut of ball screw can still rotate normally when it reaches the effective stroke, but under normal circumstances, excessive rotation is not allowed, otherwise the ball screw will be damaged and a large number of ball particles and nuts will fall off and close.

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