CN214663508U

CN214663508U - Annular guide rail pair

Info

Publication number: CN214663508U
Application number: CN202121000747.9U
Authority: CN
Inventors: 崔刚; 罗增辉; 赵二寨; 李展锋; 董利军; 史迎建
Original assignee: Xianyang Rambler Machinery Co ltd
Current assignee: Xianyang Rambler Machinery Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-09
Anticipated expiration: 2031-05-11

Abstract

The invention relates to an annular guide rail pair. This annular guide is vice includes: a closed loop track having an inner side and an outer side; at least one sliding seat capable of sliding circularly along the closed annular track, wherein at least two first bearings matched with the inner side part of the closed annular track and at least two second bearings matched with the outer side part of the closed annular track are arranged on the lower surface of the sliding seat, and the distance between the two outermost first bearings in the at least two first bearings is smaller than the distance between the two outermost second bearings in the at least two second bearings. According to the embodiment of the invention, the distance between the two outermost first bearings is smaller than the distance between the two outermost second bearings, so that the sliding seat can circularly slide on the closed annular track.

Description

Annular guide rail pair

Technical Field

The embodiment of the invention relates to the technical field of mechanical automation and the like, in particular to an annular guide rail pair.

Background

The guide rail pair of the annular rail and the straight rail spliced annular rail is a closed loop of linear and curved rails in the mechanical industry, is provided with a group of continuously connected bearing sliding seats driven by a synchronous belt and a belt pulley, and is installed on an aluminum profile. Belongs to the fields of mechanical automation, industrial robots, measuring instruments, precision instruments and equipment such as imaging instruments, light industrial machinery, medical instruments and the like.

In the related technology, at present, a closed loop of linear and curved tracks at home and abroad is provided with a group of continuously connected bearing sliding seats driven by a synchronous belt and a belt pulley. Can form a precise and precise annular assembly line and can be used for precise and automatic assembly, processing and the like.

With regard to the above technical solutions, the inventors have found that at least some of the following technical problems exist: for example, at the junction of a straight and curved track, the transition of the carriage is not smooth enough. And the bearing capacity of the sliding seat is weaker, so that the service life of the annular track is shortened.

Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.

It is noted that this section is intended to provide a background or context to the inventive concepts recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

Disclosure of Invention

An object of an embodiment of the present invention is to provide an endless guide rail pair, which overcomes one or more of the problems due to the limitations and disadvantages of the related art, at least to some extent.

According to an embodiment of the present invention, there is provided an annular guide rail pair, including:

a closed loop track having an inner side and an outer side;

at least one carriage capable of sliding cyclically along said closed endless track,

wherein at least two first bearings cooperating with the inner side of the closed circular track and at least two second bearings cooperating with the outer side of the closed circular track are provided on the lower surface of the slide, and

wherein a distance between outermost two of the at least two first bearings is smaller than a distance between outermost two of the at least two second bearings.

In an embodiment of the present invention, the closed circular track includes two semicircular circular tracks and at least two straight tracks.

In an embodiment of the present invention, the semicircular circular rail and the straight rail are butted through three threaded holes.

In an embodiment of the invention, the vertical distance between the first bearing and the second bearing is determined according to the width of the closed circular track.

In an embodiment of the invention, a ratio of a distance between two outermost first bearings of the at least two first bearings to a distance between two outermost second bearings of the at least two second bearings is 0.8-0.9.

In an embodiment of the present invention, the inner side portion and the outer side portion of the closed circular track and the first bearing and the second bearing are respectively configured as a double-row groove structure.

In an embodiment of the present invention, the first bearing and the second bearing are respectively configured as a double-row steel ball structure.

In an embodiment of the invention, the sliding seat is provided with two first bearings and two second bearings.

In an embodiment of the present invention, the sliding seat is provided with a through hole, and is fixedly connected with the first bearing and the second bearing by using the through hole and a bolt.

In an embodiment of the present invention, the inner side portion and the outer side portion of the closed circular track are respectively provided with an inner R groove, and the first bearing and the second bearing are respectively provided with an outer R groove.

The technical scheme provided by the embodiment of the invention can have the following beneficial effects:

in the embodiment of the invention, through the annular guide rail pair, on one hand, the distance between the two outermost first bearings is smaller than the distance between the two outermost second bearings, so that the sliding seat can slide on the closed annular rail in a circulating manner; on the other hand, the bearing capacity of the sliding seat is larger and the service life is longer through the double-row groove structure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1 shows a schematic view of the construction of an endless track pair in an exemplary embodiment of the invention;

FIG. 2 shows a schematic structural view of a semicircular circular track in an exemplary embodiment of the invention;

FIG. 3 shows a schematic structural view of a slider in an exemplary embodiment of the invention;

fig. 4 is a schematic top view of a slider according to an exemplary embodiment of the present invention.

Reference numerals: the device comprises a closed annular track-100, a straight track-110, a semicircular annular track-120, a closed annular track inner side-130, a closed annular track outer side-140, a sliding seat-200, a through hole-210, a first bearing-220, a second bearing-230 and a double-row steel ball structure-240.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the invention, which are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

In the exemplary embodiment, an annular guide rail pair is first provided. Referring to fig. 1, the endless guide pair may include:

a closed loop track 100, the closed loop track 100 having an inner side 130 and an outer side 140; at least one sliding base 200, the sliding base 200 can slide along the closed circular track 100 circularly, wherein at least two first bearings 220 matched with the closed circular track inner side part 130 and at least two second bearings 230 matched with the closed circular track outer side part 140 are arranged on the lower surface of the sliding base 200, and the distance A between the outermost two first bearings 220 in the at least two first bearings 220 is smaller than the distance B between the outermost two second bearings 230 in the at least two second bearings 230.

It should be understood that the closed circular track 100 may be formed by splicing a plurality of arc tracks and straight tracks, or may be formed in a splicing-free integrated manner. The closed loop track 100 is formed in an oval or racetrack shape. However, the shape and composition of the closed loop track 100 are not particularly limited, as long as the closed loop track 100 forms a closed loop, so that the slider 200 can slide circularly. In addition, the material of the closed circular track 100 can be bearing steel material, so that the closed circular track 100 has high strength and hardness, high elastic limit and contact fatigue strength, sufficient toughness and hardenability, high wear resistance and certain corrosion resistance. For convenience of processing, the hardness of the closed circular rail 100 after heat treatment is consistent with the hardness of the first bearing 220 and the second bearing 230, so that the closed circular rail 100, the first bearing 220 and the second bearing 230 are not easy to wear.

It is also to be understood that the distance a between the outermost two first bearings 220 of the at least two first bearings 220 is less than the distance B between the outermost two second bearings 230 of the at least two second bearings 230. That is, the outermost two first bearings 220 and the outermost two second bearings 230 form a trapezoidal arrangement, and the first bearings 220 form the short sides of the trapezoid, arranged at the closed looped track inner side 130, and the second bearings 230 form the long sides of the trapezoid, arranged at the closed looped track outer side 140. Enabling the carriage 200 to slide on both linear and curvilinear rails simultaneously.

Preferably, the sledge 200 is provided with two first bearings 220 and two second bearings 230. I.e. four bearings forming a trapezoid.

And the distance A between the two outermost first bearings is smaller than the distance B between the two outermost second bearings through the annular guide rail pair, so that the sliding seat circularly slides on the closed annular track.

Next, each part of the above-described endless guide rail pair in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 4.

In one embodiment, referring to the illustration in fig. 1, the closed loop track 100 includes two semi-circular loop tracks 120 and at least two straight tracks 110. It should be understood that the total length of the straight rail 110 connecting the two sides of the two semicircular circular rails 120 is the same, for example, two straight rails 110 having the same length may be spliced with the two semicircular circular rails 120, so that the closed circular rail 100 forms a track type. The grooves of the inner side 130 and the outer side 140 of the closed circular rail 100 may be simultaneously ground by separately processing the semicircular circular rail 120 and the straight rail 110, thereby facilitating the processing and making the groove sizes of the inner side 130 and the outer side 140 uniform.

In one embodiment, referring to fig. 2, the semicircular annular rail 120 and the straight rail 110 are butted by three threaded holes. It should be understood that the three threaded holes form a triangle, so that the connection between the semicircular annular rail 120 and the straight rail 110 is more stable. Meanwhile, the semicircular circular rail 120 and the straight rail 110 are assembled and developed in pairs, so that the groove butt joint of the semicircular circular rail 120 and the straight rail 110 is in seamless butt joint, and the sliding seat 200 can run more smoothly at the butt joint.

In one embodiment, referring to fig. 3, the vertical distance H between the first bearing 220 and the second bearing 230 is determined according to the width of the closed loop track 100. It will be appreciated that the distance a and distance B may be determined by the arc of the curved track and the perpendicular distance H between the first bearing 220 and the second bearing 230 may be determined by the width of the closed looped track. For example, the curved track of the closed circular track 100 is a circular arc with the radius of the circular arc being three sizes of 350mm, 450mm and 500mm, and the slide carriage 200 can be applied with one size, specifically, the distance a is 60.2mm, the distance B is 70mm, and the vertical distance H is 67 mm.

For example, in one embodiment, a ratio of a distance A between outermost two first bearings 220 of the at least two first bearings 220 to a distance B (A/B) between outermost two second bearings 230 of the at least two second bearings 230 is 0.8 to 0.9. So that the slider 200 can smoothly slide not only on a linear rail but also on a curved rail.

In one embodiment, referring to fig. 2 and 4, the inner and

outer sides

130 and 140 and the first and

second bearings

220 and 230, respectively, of the closed looped rail 100 are provided as a double row groove structure 240. The double-row groove structure 240 can enable the bearing capacity of the sliding seat 200 to be larger and the service life to be longer.

Specifically, in one embodiment, and referring to fig. 4, first bearing 220 and second bearing 230 are each provided with a double row of steel ball structures. It should be understood that the double row of balls can be better matched with the closed circular track 100, the rolling friction resistance is reduced, the stability is improved, the repeated positioning precision is higher, and in addition, the outer diameter of the balls can be phi 2.5 to phi 3.9688.

In one embodiment, referring to fig. 1, the slider 200 is provided with a through hole 210, and is fixedly connected with a first bearing 220 and a second bearing 230 by using the through hole 210 and a bolt. It should be understood that the through holes 210 correspond to the number of the first bearings 220 and the second bearings 230, and the positions of the through holes 210 on the slider 200 correspond to the first bearings 220 and the second bearings 230. In addition, the through hole 210 may be a counter bore structure, and the first bearing 220 and the second bearing 230 are fixedly connected to the slider 200 by nuts.

In one embodiment, referring to the illustration in fig. 1, the inner side 130 and the outer side 140 of the closed looped track 100 are provided with inner R-grooves, respectively, and the first bearing 220 and the second bearing 230 are provided with outer R-grooves, respectively. It should be understood that the inner R-shaped groove is an inner concave semi-circular arc structure, and the outer R-shaped groove is an outer convex semi-circular arc structure. Thereby allowing the first and

second bearings

220 and 230 and the closed loop track 100 to slide in cooperation with each other.

It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, and are used merely for convenience in describing embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. An annular guide rail pair, comprising:

a closed loop track having an inner side and an outer side;

2. The endless track pair of claim 1, wherein said closed endless track comprises two semi-circular endless tracks and at least two straight tracks.

3. The circular guide pair of claim 2, wherein the semicircular circular rail and the straight rail are butted by three threaded holes.

4. The endless track pair of claim 1, wherein the vertical distance between said first bearing and said second bearing is determined by the width of said closed endless track.

5. The endless track pair of claim 4, wherein a ratio of a distance between outermost two of said at least two first bearings to a distance between outermost two of said at least two second bearings is 0.8-0.9.

6. The endless track assembly of claim 1 wherein said inner and outer sides of said closed endless track and said first and second bearings are each provided in a double row groove configuration.

7. The endless track pair of claim 6, wherein said first bearing and said second bearing are each provided in a double row of steel ball arrangements.

8. An endless track pair as claimed in claim 1, wherein said carriage is provided with two said first bearings and two said second bearings.

9. The endless track pair of claim 1, wherein said carriage is provided with a through hole, fixedly connected to said first bearing and said second bearing by using said through hole and a bolt.

10. The endless track pair of any of claims 1 to 9, wherein said inner and outer sides of said closed endless track are each provided with an inner R-groove and said first and second bearings are each provided with an outer R-groove.