TWM470180U - Linear guideway - Google Patents

Description

Linear slide

The present invention relates to a linear slide rail, and more particularly to a linear slide rail capable of improving rolling precision and bearing capacity.

A typical linear slide is divided into a ball type slide rail or a roller type slide rail. The ball type slide rail mainly comprises a linear track, a slider which is slidably engaged with the track, and a rolling member which is mostly implanted in the slider and circulates back and forth between the slide rail and the slider. In the ball type slide rail, the rolling elements are balls; the roller type slide rail is substantially similar to the ball type slide rail, the only difference being that the roller type slide rail replaces the balls with a plurality of rollers .

Generally, the rolling elements in the linear sliding rail are slid on a plurality of rail surfaces of the surface of the sliding rail. In order to reduce the friction between the rail surfaces and the rolling elements, the rail surfaces are Goethe-type which requires high-precision grinding. The arc is so difficult to achieve the machining accuracy of the rail surfaces, not only the technical and equipment requirements are extremely high, but also the production cost is high.

The advantage of the ball type slide rail is that the contact area between the balls and the rail surfaces is small, so the rolling precision is high, however, the contact surface is also easily damaged by the force concentration, thereby affecting the same. fine Degree, the bearing capacity of the rolling element is also relatively low; in comparison, the contact area between the roller type sliding rail and the rail surface is large and has a large bearing capacity, but also affects its rolling efficiency and Precision.

Therefore, the object of the present invention is to provide a linear slide which can simplify the process and improve the rolling precision and bearing capacity.

Thus, the novel linear slide comprises a slide rail, a slider and a rolling unit.

The slide rail includes a plurality of flat rail faces formed on the surface and extending along the length of the rail. The slider is coupled to the slide rail and is slidable along the slide rail, and includes a mating slot that slides with the slide rail, and a plurality of flat raceway surfaces that are located in the mating slot and respectively correspond to the rail surface. The rolling unit circulates cyclically between the rail faces of the slide rail and the rail faces of the slider, and includes a plurality of balls arranged in a string and a plurality of rollers.

The effect of the novel is that the flat guide surface can greatly reduce the technical threshold and cost requirements of the manufacturing process. In addition, the rolling unit mixes the form of balls and rollers to improve the rolling smoothness and rolling accuracy, and to improve the slider. Carrying capacity.

1‧‧‧rails

11‧‧‧ side end face

12‧‧‧ bearing surface

121‧‧‧ edge

13‧‧‧ Groove

14‧‧‧ rail surface

2‧‧‧ Slider

21‧‧‧ Matching surface

22‧‧‧With slot

23‧‧‧ channel

231‧‧‧Track surface

24‧‧‧Return tunnel

3‧‧‧ rolling unit

31‧‧‧ rolling group

311‧‧‧ rolling sequence

312‧‧‧ balls

313‧‧ ‧roller

The other features and advantages of the present invention will be apparent from the detailed description of the preferred embodiments of the accompanying drawings, wherein: FIG. 1 is a perspective view illustrating a first preferred embodiment of the present invention; FIG. A schematic cross-sectional view of a first preferred embodiment; 3 is a plan view showing a scroll sequence of the first preferred embodiment; FIG. 4 is a plan view showing a scroll sequence of a second preferred embodiment of the present invention; FIG. A scrolling sequence of a third preferred embodiment of the present invention is illustrated; FIG. 6 is a plan view showing a scrolling sequence of a fourth preferred embodiment of the present invention; and FIG. 7 is a schematic cross-sectional view showing the novel A fifth preferred embodiment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1 and 2, a first preferred embodiment of the novel linear slide comprises a slide rail 1, a slider 2, and a rolling unit 3.

The slide rail 1 extends along a length direction and includes two opposite side end faces 11 , a bearing surface 12 connecting the side end faces 11 , and two recesses inwardly from the side end faces 11 and extending along the length direction. A groove 13 and two flat guide faces 14 respectively formed in the grooves 13 and extending along the length direction are formed.

The slider 2 is coupled to the slide rail 1 and can slide along the slide rail 1 and includes a mating surface 21 opposite to the bearing surface 12, and a recessed inwardly from the mating surface 21 and the slide rail 1 The sliding engagement grooves 22 and 4 are recessed inwardly by the mating surface 21 in the fitting groove 22 and respectively correspond to the guide rails The channels 23 of the face 14 and the four are formed in the slider 2 and correspond to the return channels 24 of the channels 23, respectively. Each of the channels 23 is formed with two flat track faces 231 that intersect at an angle.

The rolling unit 3 includes four rolling groups 31 that are respectively slid between the rail faces 14 and the rail faces 231 and are respectively circulated by the return holes 24 . The rolling groups 31 each have a plurality of balls 312 and a plurality of rollers 313 which are alternately arranged in a line.

Thereby, the flat rail surface 14 of the slide rail 1 and the flat rail surface 231 of the slider 2 are very simple in grinding processing, and an excellent surface precision and surface roughness can be achieved with a relatively low technical threshold. The manufacturing cost of the slide rail 1 and the slider 2 can be greatly reduced.

Compared with the conventional ball type slide rail, the first preferred embodiment replaces a part of the balls 312 with the rollers 313, which can increase the structural rigidity of the rolling unit 3, and the rail surfaces 14 and the track surfaces. The contact area of 231, in turn, increases the bearing capacity of the slider 2 and increases the stability during taxiing, enabling the slider 2 to withstand higher weight without damage.

Compared with the conventional roller type slide rail, the first preferred embodiment replaces the partial roller 313 with the balls 312, and the contact area of the rolling unit 3 with the rail surfaces 14 and the track surfaces 231 can be reduced. In this way, the speed, smoothness and rolling accuracy of the slider 2 during sliding can be improved, and the industrial demand for higher machining accuracy can be met.

Referring to FIG. 3 and FIG. 4, a second preferred embodiment of the present invention is substantially the same as the first preferred embodiment except that: The scroll group 31 of the scroll unit 3 can be respectively divided into a plurality of scroll sequences 311 which are repeatedly arranged in a string, and each scroll sequence 311 is arranged by a roller 313 in cooperation with a plurality of balls 312 in a fixed order.

Compared with the first preferred embodiment, the second preferred embodiment of the ball 312 has a higher proportion, so that higher rolling accuracy, sliding speed and smoothness can be exhibited; moreover, with the rollers 313, the same It is possible to have better structural rigidity and bearing capacity than the conventional ball type slide rail, whereby the same effect as the first preferred embodiment can be achieved.

Referring to FIG. 5, a third preferred embodiment of the present invention is substantially the same as the second preferred embodiment. The only difference is that each rolling sequence 311 is matched by a ball 312. Most of the rollers 313 are arranged in a fixed order.

Compared with the first preferred embodiment, the third preferred embodiment of the roller 313 has a higher proportion, so that it can exhibit higher structural rigidity and bearing capacity; moreover, by the balls 312, the same can be achieved. The roller type slide rail has better rolling precision and smoothness, whereby the same effect as the first preferred embodiment can be achieved.

It is conceivable that the user can optimize the rolling precision and the structural rigidity by configuring the balls 312 and the rollers 313 in different proportions, so as to meet the different use occasions and the machine requirements, for example, as shown in FIG. A fourth preferred embodiment of the present invention is substantially the same as the second preferred embodiment except that each rolling sequence 311 is matched by a plurality of balls 312 with a plurality of rollers 313. Fixed order to make.

It is worth mentioning that the linear slide rail of the present invention can also be applied to the combination of different types of slide rails 1 and sliders 2, for example, a fifth preferred embodiment of the present invention as shown in FIG. The preferred embodiment is substantially the same as the first preferred embodiment, except that the slide rail 1 includes a pair of bearing surfaces 12 that should engage the mating surface 21 of the slider 2, and two end edges of the bearing surface 12 respectively. 121 is an opposite side end surface 11 which is bent outward at an angle and is further bent inward, and two flat guide rail faces 14 respectively formed on the side end faces 11.

The slider 2 includes a mating surface 21, a mating groove 22 formed on the mating surface 21 and slidingly coupled to the slide rail 1, and four are formed in the mating surface 21 and located in the mating slot 22, and respectively corresponding to each other. The flat track surface 231 of the rail surface 14 is equal.

The rolling unit 3 is correspondingly slid on the rail surface 14 and the rail surfaces 231, so that the same effect as the first preferred embodiment can be achieved.

In summary, the advantages of this new model can be summarized as follows:

1. The flat rail faces 14 and the rail faces 231 can greatly reduce the manufacturing difficulty and reduce the technical threshold and cost of the manufacturing process and equipment requirements.

2. The rolling unit 3 mixes the form of the balls 312 and the rollers 313 to improve the rolling smoothness and rolling precision of the slider 2 and improve the bearing capacity of the slider 2.

Third, by designing the number of different balls 312, rollers 313 The rolling unit 3 can achieve the purpose of the present invention in accordance with different usage requirements and machine specifications, and exerts the greatest practical value.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

1‧‧‧rails

11‧‧‧ side end face

12‧‧‧ bearing surface

13‧‧‧ Groove

14‧‧‧ rail surface

2‧‧‧ Slider

21‧‧‧ Matching surface

22‧‧‧With slot

23‧‧‧ channel

231‧‧‧Track surface

24‧‧‧Return tunnel

3‧‧‧ rolling unit

312‧‧‧ balls

313‧‧ ‧roller

Claims (7)

A linear slide comprising: a slide rail comprising a plurality of flat rail surfaces formed on the surface and extending along a length of the slide rail; a slider engaged with the slide rail and capable of sliding along the slide rail, and including a matching groove that slides with the sliding rail, and a plurality of flat track surfaces that are respectively located in the matching groove and respectively correspond to the rail surface; and a rolling unit that circulates cyclically on the rail surfaces of the rail and the rail Between the orbital faces of the slider, and including a plurality of balls arranged in a string and a plurality of rollers. The linear slide of claim 1, wherein the rolling unit can be divided into a plurality of rolling sequences that are repeatedly arranged in a string in a fixed order by a roller in combination with at least one ball. The linear slide of claim 1, wherein the rolling unit can be divided into a plurality of rolling sequences that are repeatedly arranged in a string in a fixed order by a ball in cooperation with a plurality of rollers. The linear slide of claim 1, wherein the scroll unit can be divided into a plurality of scroll sequences that are repeatedly arranged in a string by a plurality of balls in cooperation with a plurality of rollers in a fixed order. The linear slide rail according to any one of the preceding claims, wherein the slide rail further comprises two opposite side end faces, and two four guide rail faces respectively formed on the side end faces, the rolling unit There is further included four rolling groups respectively corresponding to the sliding between the rail faces and the track faces, and each of which is repeatedly arranged in a series by a plurality of rolling sequences. The linear slide rail according to claim 5, wherein the slide rail further comprises a bearing surface connecting the side end faces, and two grooves respectively formed on the side end faces and extending along the length direction of the slide rails, The guide rail faces are respectively formed in the grooves, and the slider further includes a mating surface opposite to the bearing surface, and the fourth surface is recessed in the mating groove by the mating face, and respectively corresponding to each other Channels on the rail surface, the rail surfaces are respectively formed in the channels, and the mating grooves are formed on the mating surface. The linear slide of claim 6, wherein each channel is formed with two track faces that intersect at an angle.