导轨丝杠是工具机和精密机械上常使用的传动元件，其主要功能是将旋转运动转换成线性运动，或将扭矩转换成轴向反复作用力，同时兼具高精度、可逆性和率的特点。

Guide screw is a transmission element commonly used in tool machines and precision machinery. Its main function is to convert rotary motion into linear motion, or torque into axial repeated force. It also has the characteristics of high accuracy, reversibility and high efficiency.

偏心：是指固定侧与支承侧的存在偏移。倾斜：是指除偏心以外，丝杆轴与导向部分（LM导轨等）之间存在的平行误差（上下，左右）或丝杆螺母安装部的垂直误差而产生的安装误差。

Eccentricity: refers to the deviation between the center of the fixed side and the support side. Inclination: refers to the installation error caused by the parallel error (up and down, left and right) between the screw shaft and the guide part (LM guide rail, etc.) or the vertical error of the screw nut installation part, except for eccentricity.

安装精度值参考：导轨丝杠的安装精度参考值如表所示。表中数据仅供参考，请尽可能的减少安装误差。电机支座、联轴器的安装精度影响工作台的行走定位精度，同样要充分注意导轨丝杠的情况。

Reference value of installation accuracy: the reference value of installation accuracy of guide screw is shown in the table. The data in the table is for reference only. Please reduce the installation error as much as possible. The installation accuracy of the motor support and coupling affects the walking positioning accuracy of the workbench. Also, pay full attention to the situation of the guide screw.

拆封：注意不要磕碰螺母及端部螺纹，拆开使螺母从有效螺纹的一端手动旋转运行另一端并感觉阻力是否一致，有否明显弯曲，注意不要使螺母旋出有效螺纹。擦去表面防锈油，涂上润滑油。

Unpacking: pay attention not to bump the nut and end thread. Unpack the nut to manually rotate from one end of the effective thread to the other end and feel whether the resistance is consistent and whether there is obvious bending. Pay attention not to screw the nut out of the effective thread. Wipe off the anti-rust oil on the surface and apply lubricating oil.

维护：直线速度小于等于30米/分可以采用脂润滑并视工况在每300~600工作小时注脂一次，30~60米/分建议油润滑，60~100米/分可以考虑强制油喷润滑，超过100米/分的比较少见，建议订购丝杠并采取强制冷却润滑。保持工作环境清洁，勿使灰尘等杂质进入滚道或螺母内部，条件恶劣请考虑在螺杠外部增加防护罩。

Maintenance: grease lubrication can be used when the linear speed is less than or equal to 30 m/min, and grease can be injected once every 300~600 working hours according to the working conditions. Oil lubrication is recommended for 30~60 m/min, and forced oil spray lubrication can be considered for 60~100 m/min. It is rare when the linear speed is more than 100 m/min. It is recommended to order the lead screw and adopt strong cooling but lubrication. Keep the working environment clean. Do not let dust and other impurities enter the raceway or the inside of the nut. If the conditions are bad, please consider adding a protective cover outside the screw.

导轨丝杠通常用于需要精密定位的场合。高的机械效率、低的传动扭矩和轴向游隙几乎为零，使得导轨丝杠成为刀具定位和飞机副翼驱动这类应用中的重要装置。然而，阻力和由连续工作产生的热量可能引起很大的摩擦力和定位误差。

Guide screw is usually used in occasions requiring precise positioning. With high mechanical efficiency, low transmission torque and almost zero axial clearance, the guide screw becomes an important device in such applications as tool positioning and aircraft aileron drive. However, resistance and heat generated by continuous operation may cause great friction and positioning error.

在导轨丝杠里增加摩擦的设计因素也增加扭矩，并且反过来影响定位精度。滚珠被压紧在导轨丝杠螺母和丝杠轴之间时，产生的楔效应是一个潜在的摩擦源。在正转的时候，滚珠通常对着螺母挤压；反转时，滚珠对着丝杠轴挤压。由于滑动摩擦系数比滚动摩擦系数大得多(没动0.1～0.3；滚动0.001～0.003)，楔效应大大增加了扭矩。

The design factor of increasing friction in the guide screw also increases the torque, and in turn affects the positioning accuracy. When the ball is pressed between the guide screw nut and the lead screw shaft, the wedge effect is a potential friction source. In forward rotation, the ball is usually squeezed against the nut; When reversing, the ball presses against the lead screw shaft. Because the sliding friction coefficient is much larger than the rolling friction coefficient (no movement 0.1~0.3; rolling 0.001~0.003), the wedge effect greatly increases the torque.

由于滚动摩擦的摩擦损失小，因此使用寿命较长。由于导轨丝杠具有上述优点，作为一种精密而又省力的传动机构，在精密机床、数控机床上的应用较为普遍。您有需求就来我们网站http://www.jngongrun.com咨询吧！

Because the friction loss of rolling friction is small, the service life is long. Because the guide screw has the above advantages, as a precise and labor-saving transmission mechanism, it is widely used in precision machine tools and CNC machine tools. Come to our website if you need http://www.jngongrun.com Ask!