Linear guide and ball screw contrast
Release time:
2023-10-30
Positioning accuracy: In terms of accuracy, the identification of linear guide transmission mechanism reduces the problem of interpolation lag, positioning accuracy, reproduction accuracy, and feedback control through position detection will be easier to achieve than rotary motor ball screw.
1. Positioning accuracy
In terms of accuracy, the identification of the linear guide transmission mechanism reduces the problem of interpolation lag, positioning accuracy, reproduction accuracy, and feedback control through position detection will be easier to achieve than the rotary motor ball screw.
2. Comparison of repeat accuracy
The transmission mechanism is simple, which reduces the problem of interpolation lag. On the contrary, the gap of the screw rod is easy to affect, so the linear guide is easier to realize.
3. Speed comparison
Generally, due to the centrifugal force, the servo motor will be subjected to greater stress when operating at high speed, so the speed and output power are limited. Relatively speaking, the linear guide does not accept the limit, there is no mechanical loss, so as to improve the transmission speed.
4. Travel comparison
From the stroke point of view, the stroke of the linear guide depends on the stator and the mover. Theoretically, the linear guide can be extended indefinitely. However, due to the influence of load, screw diameter, precision grade and other factors, the servo guide screw can only reach 4M in length.
5. Simple maintenance
The linear guide rail has few parts, no contact with the moving machinery, and little or no maintenance. The servo motor screw has many structures and many parts, and requires frequent maintenance or replacement of accessories.
6. Life comparison
Linear guide rail: linear guide rail because there is no direct contact between moving parts and fixed parts, will not be due to the high-speed movement of the mover and wear, even if the long-term use of no change in motion accuracy, so longer life.
Servo motor screw: The ball screw causes wear of transmission parts due to high-speed movement, and cannot ensure accuracy in high-speed reciprocating movement, thus affecting accuracy.
Straight Line,Guide rail,Ball screw
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