Linear guide pair
A technology of linear guide rail pairs and supporting guide rails, applied in the direction of linear motion bearings, bearings, shafts and bearings, etc., can solve problems such as non-rotation, low limit speed, broken ball grooves, etc., and achieve high structural reliability and increase limit speed , the effect of small friction
Active Publication Date: 2013-04-17
OPD TECH SHENZHEN
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Problems solved by technology
However, since the curved guide groove is curved, when the speed of the slider exceeds 12m / s, the balls in the guide groove cannot be discharged into the linear guide pair in time due to the fact that the linear velocity of the ball is higher than the linear velocity of the ball in the curve, resulting in The ball between the slider and the guide rail is stuck and cannot rotate, which will cause the guide rail to be strained or the ball groove to be broken.
This kind of linear guide pair in the prior art has low limit speed and poor reliability, so it cannot be applied to fields requiring high linear speed and high acceleration
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[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0015] Such as Figure 1 ~ Figure 3 As shown, a linear guide rail pair provided by an embodiment of the present invention includes a machine base 100 and a slider 200. At least two cylindrical guide rails 310 are fixedly arranged on the machine base 100, and the slider 200 rotates on the A first bearing 410 and a second bearing 420 that can roll along the guide rail 310 are provided. A point contact friction pair is formed between the first bearing 410 and the second bearing 420 and the guide rail 310. The first bearing 410 The angle between the central axis of the second bearing 420 and the centr...
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The invention belongs to the technical field of guide pair structures, and discloses a linear guide pair. The linear guide pair comprises a bedplate and a sliding block. At least two cylindrical guiding rails are fixedly arranged on the bedplate. A first bearing and a second bearing which can roll along the guiding rails are arranged on the sliding block, wherein the bearings can rotate. A point contact friction pair is formed among the first bearing, the second bearing, and the guiding rail. An angle formed between a central axis of the first bearing and a central axis of the second bearing is larger than 90 DEG and smaller than 170 DEG. With the linear guide pair provided by the invention, working principles of traditional linear guiding rails are broken through. According to the invention, a character of roller bearings of high limit speed is adopted. A maximum limit speed and a limit acceleration depend on the limit speed of the bearings. Therefore, the limit speed of the sliding block is greatly increased, and a phenomenon of roller blocking is not occurred. The reliability of the linear guide pair is high, the linear guide pair can be reliably applied in fields requiring linear speed and high acceleration.
Description
technical field [0001] The invention belongs to the technical field of guide rail pair structure, and in particular relates to a linear guide rail pair capable of ultra-high-speed operation. Background technique [0002] In the current linear guide rail pair, a curved guide groove and balls are arranged in the curved guide groove, so that the balls are circulated in the curved guide groove to be discharged between the slider and the guide rail pair, so as to play the role of a bearing. However, since the curved guide groove is curved, when the speed of the slider exceeds 12m / s, the balls in the guide groove cannot be discharged into the linear guide pair in time due to the fact that the linear velocity of the ball is higher than the linear velocity of the ball in the curve, resulting in The ball between the slider and the guide rail is stuck and cannot rotate, which will cause the guide rail to be strained or the ball groove to be broken. The linear guide pair in the prior ...
Claims
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IPC IPC(8): F16C29/04
Inventor 胡羽飞
Owner OPD TECH SHENZHEN