| Understanding of linear guides |
| Release date：2021/7/6 14:06:55 Hits：698 TimesNews source： |
| The rolling linear guide pair is to put an appropriate steel ball between the slider and the guide rail, so that the sliding friction between the slider and the guide rail becomes rolling, the difference in static friction is very small, and the followability is excellent, that is, the driving signal and the The time interval of mechanical action lag is extremely short, which is beneficial to improve the response speed and sensitivity of the CNC system. ?? Compared with the V-shaped cross roller guide, the friction resistance can be reduced by about 40 times. ?? It is suitable for high-speed linear motion, and its instantaneous speed is about 10 times higher than that of the sliding guide. ?? Able to achieve high positioning accuracy and repeat positioning accuracy. ?? Dynamic friction, which greatly reduces the frictional resistance between the two, so as to obtain: It can realize the movement without backlash and improve the movement stiffness of the mechanical system. ??? The driving power is greatly reduced, which is only one-tenth of that of ordinary machinery. ???? The guide rail adopts surface hardening treatment, so that the guide rail has good calibrability; the core maintains good mechanical properties. Simplifies the design and manufacture of mechanical structures.? When the guide rail pair is used in pairs, it has the "error equalization effect", which reduces the processing accuracy requirements of the basic parts (rail mounting surface), and reduces the mechanical manufacturing cost and difficulty of the basic parts. ?? The cross section of the rail pair raceway adopts circular arc grooves with a reasonable ratio, and the contact stress is small. The bearing capacity and rigidity are greatly improved than when the plane is in contact with the steel ball. The rolling friction force is significantly lower than that of the double circular arc raceway. |
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