Linear side rail with doubled service life

Abstract

The utility model provides a linear slide rail with doubled service life. The linear slide rail comprising a guide rail and a slide block; the two side edges of the guide rail and the slide block are respectively provided with a two-cylindrical roller groove; a first contact track surface and a second contact track surface are defined at the inner wall of the cylindrical roller groove; a convex cylindrical roller unit and a concave cylindrical roller unit are respectively provided with a plurality of convex cylindrical rollers and concave cylindrical rollers; and the guide rail can be provided with the slide block twice sequentially, and the firstly-configured slide block can be inserted by the convex cylindrical rollers or the concave cylindrical rollers, so that the cylindrical rollers are contacted with one contact track surface of the guide rail. When the contact track surface on which the guide rail is used is worn, the secondly-configured slide block and the cylindrical roller in an inverse mode can be used, and the cylindrical rollers are contacted with the other unworn contact track surface of the guide rail, so that the guide rail can be continuously and normally used, and the effect of doubling the service life can be achieved.

Description

technical field [0001] The invention relates to a linear slide rail, in particular to a linear slide rail which can double the service life. Background technique [0002] see figure 1 In the past, there was a linear slide 20 with a guide rail 21, a slider 22 and a plurality of balls 23. A groove 221 for fitting the guide rail 21 was recessed below the slider 22. The guide rail 21 was on the top surface and two There are several rolling grooves 211 recessed on the sides, and a circulation hole 222 is recessed inside the slider 22 at the adjacent position corresponding to each rolling groove 211, so that multiple balls 23 can be inserted into the rolling grooves 211, and then enter the corresponding The corresponding circulation hole 222 forms a circulation, so that the slider 22 can move freely on the guide rail 21. The advantage of this kind of linear slide rail 20 is that a ball 23 is installed on the top surface of the guide rail 21 as a supporting component, which can I...

AI Technical Summary

Problems solved by technology

[0002] see figure 1 In the past, there was a linear slide 20 with a guide rail 21, a slider 22 and a plurality of balls 23. A groove 221 for fitting the guide rail 21 was recessed below the slider 22. The guide rail 21 was on the top surface and two There are several rolling grooves 211 recessed on the sides, and a circulation hole 222 is recessed inside the slider 22 at the adjacent position corresponding to each rolling groove 211, so that multiple balls 23 can be inserted into the rolling grooves 211, and then enter the corresponding The corresponding circulation hole 222 forms a circulation, so that the slider 22 can move freely on the guide rail 21. The advantage of this kind of linear slide rail 20 is that a ball 23 is installed on the top surface of the guide rail 21 as a supporting component, which can Effectively withstand the pressure from above the slider 22, but its disadvantage is that the ball 23 is used as a point contact relationship. The contact surface between the ball 23 and the rolling groove 211 is easy to wear due to force, and the service life is not long

[0003] see figure 2 In the past, there was another linear slide rail 30 with a guide rail 31, a slider 32 and a plurality of rollers 33. The slider 32 was slid on the guide rail 31 for linear movement, and each side of the slider 32 was provided with Two rolling grooves 321, the interior of the slider 32 is recessed with two circulation holes 322 at the sides corresponding to the two rolling grooves 321, after the rollers 33 are placed in the rolling grooves 321, they enter the corresponding circulation holes 322 to form a circulation, thereby The slider 32 can move smoothly. The advantage of this type of linear slide rail 30 is that the roller 33 is used as a supporting component. The bearing capacity of the roller 33 is stronger than that of the ball, which can effectively bear the heavy weight of the machine and has a long service life. It is also longer, but there are still deficiencies in use. Generally, after a long-term use of the linear slide rail 30, or when the machine crashes or encounters other strong impact accidents, the contact line between the rollers 33 and the rolling grooves 321 will be broken. P produces wear and tear. Once the surface of the rolling groove 321 is worn, the accuracy of the entire machine will have serious errors. The user only has to dismantle the entire linear slide 30 for replacement and recalibrate the accuracy, which is quite time-consuming and costly. What's more serious, the whole machine will be scrapped since then, so how to prolong the service life of the linear slide 30 has always been a problem that the industry wants to solve

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