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滚珠丝杠变形的体现哪几个方面?

来源:http://www.jngongrun.com/ 日期:2020-07-24 发布人:admin

滚珠丝杠是工具机械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、可逆性和效率的特点。由于具有很小的摩擦阻力,滚珠丝杠被广泛应用于各种工业设备和精密仪器。那么在使用的时候我们要解决滚珠丝杆变形的问题,下面导轨丝杠小编将为您讲解:

Ball screw is a transmission element often used in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion or torque into axial repeated force. At the same time, it has the characteristics of high precision, reversibility and efficiency. Due to its small friction resistance, ball screw is widely used in various industrial equipment and precision instruments. Then we should solve the problem of ball screw deformation in use. The following guide screw small series will explain to you:
1.虽然实心滚珠丝杆的长度过70英尺,但有时空间限制会限制其长度。在需要在狭小空间内长距离行驶的应用中,伸缩式滚珠丝杠副是一种方便的解决方案。这些机构中的中空外螺钉围绕实心或空心内螺钉。内螺钉从外螺钉延伸,增加了螺钉的伸展范围。可以通过这种方式组合三个或多螺钉,以实现长的行程。
1. Although the length of the solid ball screw is more than 70 feet, sometimes the space limit will limit its length. The retractable ball screw is a convenient solution in the application of long distance driving in narrow space. The hollow outer screw in these mechanisms surrounds the solid or hollow inner screw. The internal screw extends from the outer screw, which increases the extension range of the screw. Three or more screws can be combined in this way to achieve a long stroke.
2.预紧力大小必须合适,过小不能确保无隙传动,过大将使驱动力矩增大,效率降低,寿命缩短。预紧力应不大于大轴向负载的1/3。
2. The pre tightening force must be appropriate. If it is too small, it will not ensure seamless transmission. If it is too large, the driving torque will be increased, the efficiency will be reduced and the service life will be shortened. The preload should not be greater than 1 / 3 of the large axial load.
导轨丝杠
Guide screw
3.滚珠丝杆用于机械中,并且在飞机上需要用于驱动前缘翼片。螺钉封闭在密封管中,安装支架连接到负载并从外管延伸。致动电动机伸出或缩回螺钉以推动或拉动负载。这些装置用于定位应用,例如商业卫星天线,材料处理以及需要简单,打开或关闭操作的应用。致动器还可以在不消耗电力的情况下或在断电情况下保持负载静止。
3. Ball screw is used in machinery and is required to drive leading edge fins on aircraft. The screw is enclosed in a sealed tube and the mounting bracket is connected to the load and extends from the outer tube. The actuator motor extends or retracts the screw to push or pull the load. These devices are used for positioning applications such as commercial satellite antennas, material handling, and applications that require simple, on or off operation. The actuator can also keep the load stationary without consuming power or in case of power failure.
4.另一种垫片调隙式消除轴向间隙的方法。垫片调整式是指用螺钉连接滚珠丝杆两个螺母的凸缘,并在凸缘间加垫片。调整垫片的厚度使螺母产生微量的轴向位移,以达到消除轴向间隙和产生 预紧力的目的。
4. Another way to eliminate the axial clearance is to adjust the clearance of the gasket. The gasket adjustment type refers to connecting the flange of the two nuts of the ball screw with screws and adding a gasket between the flanges. Adjust the thickness of the gasket to make the nut produce a small amount of axial displacement, so as to eliminate the axial clearance and produce preload.
5.有时标准滚珠丝杠不能为特定应用提供正确的解决方案。在许多情况下,传统滚珠丝杠的变型可以解决多个问题。例如,空心滚珠丝杠将扭矩转换为推力,同时允许冷却剂流动或布线的路径。穿过螺杆轴的冷却剂可以帮助保持精密滚珠丝杠操作的公差或润滑切削刀具。空心螺钉还具有比实心螺钉低的转动惯量,这可以显着启动和停止速度。
5. Sometimes the standard ball screw does not provide the right solution for specific applications. In many cases, variants of the traditional ball screw can solve many problems. For example, hollow ball screws convert torque into thrust while allowing coolant flow or routing. Coolant passing through the screw shaft helps to maintain tolerances in precision ball screw operation or to lubricate cutting tools. Hollow screws also have a lower moment of inertia than solid screws, which can significantly start and stop speeds.
导轨丝杠
Guide screw
6.滚珠丝杆轴向间隙是承载时在滚珠与滚道型面接触点的弹性变形所引起的螺母位移量和螺母原有的间隙的综合。常用的是双螺母预紧方法,把弹性变形控制在小范围内,以减小或消除轴向间隙,并可以提高上银滚珠丝杆的刚度。
6. The axial clearance of ball screw is the combination of nut displacement caused by elastic deformation at the contact point between ball and raceway surface and the original clearance of nut. In order to reduce or eliminate the axial clearance and improve the stiffness of the upper silver ball screw, the double nut pre tightening method is commonly used to control the elastic deformation in a small range.
关于如何解决滚珠丝杆变形的问题就介绍到这里了,希望对大家有所帮助。想了解更多相识,可以关注导轨丝杠
On how to solve the problem of ball screw deformation introduced here, I hope to help you. If you want to know more, you can pay attention to the guide screw

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