The ball screw lead is the distance that the nut moves along the axis direction for each rotation of the screw. The size of the lead determines the transmission speed and transmission efficiency of the screw.
At the same input speed, the larger the lead, the faster the output speed; Conversely, the smaller the lead, the slower the output speed. At the same time, the size of the lead also directly affects the transmission efficiency of the ball screw.
The role of the ball screw lead
Determine the output speed:By changing the size of the lead, the output speed of the ball screw can be adjusted. In the case of a constant input speed, increasing the lead can increase the output speed, and decreasing the lead will decrease the output speed.
Determine the transmission efficiency:The size of the lead directly affects the transmission efficiency of the ball screw. The larger the lead, the smaller the rolling friction of the ball in the spiral groove, and the higher the transmission efficiency. Conversely, the smaller the lead, the lower the transmission efficiency.
Determine the load capacity:The size of the lead also affects the load capacity of the ball screw. Under the same applied load, increasing the lead can reduce the contact pressure between the balls and increase the load capacity. Reducing the lead reduces the load capacity.
Selection of ball screw leads
In practical applications, there are many factors that need to be considered to select the appropriate lead size, such as input speed, output speed, transmission efficiency, load capacity, etc. In general, for systems that require high-speed movement, larger leads should be chosen; For systems that require low speeds and large loads, a smaller lead should be chosen. In addition, factors such as the manufacturing accuracy and installation accuracy of the ball screw should be considered to ensure the stability and reliability of the system.
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