溫度對滾珠絲桿的影響

Effect of temperature on ball screw

滾珠絲桿運轉時，溫度會影響到機械傳動系統的精度，特別是高速且高精度的機械。影響滾珠絲桿溫度升高的因素有預壓力、潤滑和預拉。下面導軌絲杠廠家為您講解一番內容：

When the ball screw runs, the temperature will affect the accuracy of the mechanical transmission system, especially for high-speed and high-precision machinery. The factors that affect the temperature rise of ball screw include preload, lubrication and pretension. The manufacturer of guide rail lead screw will explain the following contents for you:

預壓力的影響：為了避免造成機械傳動系統的任何失步，提高螺帽剛性是很重要的然而高提高螺帽剛性，必須使螺帽預壓力達到一定水準。施加預壓力于螺帽會增加螺牙的摩擦扭矩，并使工作時的溫度升高。

Effect of preload: In order to avoid any out-of-step of the mechanical transmission system, it is important to improve the nut rigidity. However, to improve the nut rigidity, the nut preload must reach a certain level. Applying preload on the nut will increase the friction torque of the screw tooth and increase the temperature during operation.

潤滑的影響：潤滑油的選擇直接影響滾珠絲桿的溫升，雷尼摩申的滾珠絲桿須采以油或者油脂其中一項的潤滑，一般建議以軸承潤滑油為滾珠絲桿油潤滑，油脂則建議以鋰皂基的油脂。油品黏度選用是依操作速度、工作速度以及符合情形來做選擇。

Influence of lubrication: the selection of lubricating oil directly affects the temperature rise of the ball screw. The ball screw of Renimoshen must be lubricated with oil or grease. Generally, it is recommended to use bearing lubricating oil as the ball screw oil for lubrication, and the grease is recommended to use lithium soap based grease. The viscosity of oil is selected according to the operating speed, working speed and compliance.

預拉的影響：滾珠絲桿溫度升高時，熱應力效應會使滾珠絲桿伸長，使絲桿的長度變得不穩定。其伸長量可借由預拉來補償；過大的預拉會燒壞支撐軸承，若絲桿的直徑超過50mm時也不適合做預拉，絲桿直徑大就需要做預拉力，因此導致支撐軸承過熱而燒壞。

Effect of pretension: when the temperature of the ball screw increases, the thermal stress effect will make the ball screw elongate and make the length of the screw become unstable. Its elongation can be compensated by pretension; Excessive pretension will burn the support bearing. If the diameter of the screw rod exceeds 50 mm, it is not suitable for pretension. If the diameter of the screw rod is large, it is necessary to do pretension. Therefore, the support bearing will be burnt due to overheating.

溫度對直線導軌的影響

Influence of temperature on linear guide

若部件在130℃以上的高溫下長期運行的話，就會降低直線導軌的使用壽命。不管是設備所處的環境高溫，還是直線導軌在快速給進時的溫度，都會讓直線導軌處于異常的條件下，而高溫同樣會影響直線導軌的潤滑劑。引起高溫一般是由以下情況：

The service life of the linear guide rail will be reduced if the components are operated for a long time at a high temperature above 130 ℃. Both the high ambient temperature of the equipment and the temperature of the linear guide during rapid feeding will make the linear guide under abnormal conditions, and the high temperature will also affect the lubricant of the linear guide. High temperature is generally caused by the following conditions:

1、潤滑劑選擇不當，潤滑不足或者過分潤滑：有很多設備制造商覺得比較粘稠的潤滑劑會使設備運行更長時間而不需要再次潤滑.粘稠的潤滑劑會使滑塊和導軌的摩擦力增大，增加其內部溫度，反之潤滑劑太過稀疏也不行，這樣會使得潤滑劑更快的流失，蒸發，導致潤滑不足，后，導致高溫，燒死。所以，一般都會強調設備制造商能定期對傳動件進行保養，保證雷尼摩申導軌的壽命。

1. Improper selection of lubricant, insufficient lubrication or excessive lubrication: many equipment manufacturers feel that the more viscous lubricant will make the equipment run for a longer time without re-lubrication. The viscous lubricant will increase the friction between the sliding block and the guide rail, and increase its internal temperature. On the contrary, the lubricant is too sparse, which will make the lubricant lose faster, evaporate, cause insufficient lubrication, and then cause high temperature and burn. Therefore, it is generally emphasized that the equipment manufacturer can regularly maintain the transmission parts to ensure the service life of the Renimoshen guide rail.

2、粉塵過大：一些設備使用的環境，因為粉塵過大，導致滑塊滾動部位進入大量肉眼看不到的雜質，這樣也會增加其摩擦系數，影響其預壓以及間隙，嚴重時，會對滾動體造成腐蝕，后導致卡死，電機燒死。

2. Excessive dust: in the environment where some equipment is used, due to the excessive dust, the sliding block rolling part enters a large number of invisible impurities, which will also increase its friction coefficient, affect its preload and clearance, and in serious cases, cause corrosion to the rolling body, and then cause jamming and motor burning.

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