Linear guide rail structure
By setting racks on the outside of the linear guide rail and meshing with the gears, the problem of racks being prone to deformation in traditional linear guide rail systems is solved, the stability and service life are improved, and the cost is reduced.
Patent Information
- Application Number
- CN202421736126.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In traditional linear guide systems, the rack is susceptible to compression deformation, resulting in tooth wear, affecting meshing accuracy and efficiency, and increasing maintenance costs and equipment ownership costs.
By providing the first and second racks on the outside of the first and second guide rails and providing gears on the cage, the gears are meshed with the rack from both sides, and the pressure on the rack is reduced and deformation is avoided.
It improves the stability of the rack and the overall service life of the linear guide rail, reduces costs, and improves the reliability and economicality of equipment operation.
Smart Images
Figure CN222963180U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of linear guide rails, in particular to a linear guide rail structure. Background Art
[0002] Linear guide rail systems are widely used in fields such as automation, precision machinery, and numerical control machine tools. Their main function is to provide accurate and stable linear motion. Traditional linear guide rail systems usually consist of a pair of oppositely arranged guide rails. One of the guide rails is provided with a groove extending along its length. Through wire cutting, a rack is further embedded inside the groove. A gear is installed in the mating cage, and power is transmitted and precise positioning and motion control are achieved through the meshing of the gear and the rack.
[0003] However, in the prior art, the rack is located inside the groove of the guide rail, which has the following main problems: The rack is easily deformed under pressure. Since the weight of the guide rail and its external devices directly acts on the groove rack, after long-term use, the rack is prone to deformation, resulting in tooth profile wear, which affects the normal meshing between the gear and the rack, and reduces the transmission accuracy and efficiency. High cost. The guide rail needs wire cutting during preparation, and after the rack is deformed, it needs to be frequently replaced, which not only increases the maintenance cost, but also may affect the production efficiency due to downtime for maintenance. The service life is limited. The above problems ultimately limit the service life of the entire linear guide rail system and increase the overall ownership cost of the equipment. Summary of the Utility Model
[0004] The utility model aims to at least solve the technical problems existing in the prior art. For this purpose, the utility model proposes a linear guide rail structure, which improves the stability of the rack and the overall service life of the linear guide rail, reduces costs at the same time, and enhances the reliability and economy of the equipment operation.
[0005] A linear guide rail structure according to some embodiments of the utility model includes a first guide rail and a second guide rail. A first V-shaped groove is formed on the first guide rail, and a second V-shaped groove is formed on the second guide rail. The first V-shaped groove and the second V-shaped groove are oppositely arranged. A first rack is arranged on the first guide rail, and a second rack is arranged on the second guide rail. The first rack and the second rack are respectively arranged outside the first V-shaped groove and outside the second V-shaped groove. A cage is arranged between the first guide rail and the second guide rail. A plurality of grooves are uniformly distributed in a row along the length of the cage, and rollers are arranged in the grooves. A gear is movably arranged on the cage. The first rack and the second rack are respectively arranged on both sides of the gear, and both the first rack and the second rack are meshed with the gear.
[0006] A linear guide rail structure according to some embodiments of the utility model has at least the following beneficial effects:
[0007] In the utility model, the first rack and the second rack are respectively arranged on the outer sides of the first V-shaped groove and the second V-shaped groove. A cage is arranged between the first guide rail and the second guide rail. A plurality of grooves are uniformly distributed in a row along the length of the cage. Rollers are arranged in the grooves. A gear is movably arranged on the cage. The first rack and the second rack are respectively arranged on both sides of the gear. The first rack and the second rack are both engaged with the gear, so that the gear is engaged with the first rack and the second rack from both sides. The first rack and the second rack are not easily deformed under pressure, and it is not necessary to wire-cut grooves in the first V-shaped groove and the second V-shaped groove. The utility model improves the stability of the rack and the overall service life of the linear guide rail, reduces the cost at the same time, and improves the reliability and economy of the equipment operation.
[0008] According to a linear guide rail structure of some embodiments of the utility model, the second rack includes a second connecting portion and a second engaging portion. The second connecting portion is connected to the side wall of the second guide rail. The top of the second connecting portion is bent towards the second V-shaped groove to form the second engaging portion. The second rack includes a second connecting portion and a second engaging portion. The second connecting portion is connected to the side wall of the second guide rail. The top of the second connecting portion is bent towards the second V-shaped groove to form the second engaging portion.
[0009] According to a linear guide rail structure of some embodiments of the utility model, the first rack is detachably connected to the first guide rail, and the second rack is detachably connected to the second guide rail.
[0010] According to a linear guide rail structure of some embodiments of the utility model, a plurality of first connecting holes are arranged on the outer side of the first rack, a plurality of first fixing holes are arranged on the outer circumference of the first guide rail, the first connecting holes and the first fixing holes are arranged in one-to-one correspondence, a plurality of second connecting holes are arranged on the outer side of the second rack, a plurality of second fixing holes are arranged on the outer circumference of the second guide rail, and the second connecting holes and the second fixing holes are arranged in one-to-one correspondence.
[0011] According to a linear guide rail structure of some embodiments of the utility model, a plurality of first positioning holes are formed on the side wall of the first rack, and a plurality of second positioning holes are formed on the side wall of the second rack.
[0012] According to a linear guide rail structure of some embodiments of the utility model, a plurality of avoidance grooves are arranged at intervals on the first rack, the first connecting holes are located in the avoidance grooves, a plurality of avoidance grooves are arranged at intervals on the second rack, and the second connecting holes are located in the avoidance grooves.
[0013] According to a linear guide rail structure of some embodiments of the present utility model, a receiving cavity is provided in the middle of the cage, openings are provided on both sides of the receiving cavity, a rotating shaft penetrates through the middle of the gear, the rotating shaft is connected to the upper and lower ends of the receiving cavity, and the gear extends out from the opening.
[0014] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model.
[0017] Figure 2 is an exploded view of the structure of an embodiment of the present utility model Figure 1 .
[0018] Figure 3 is an exploded view of the structure of an embodiment of the present utility model Figure 2 .
[0019] Figure 4 is a schematic structural diagram of an embodiment of the present utility model after hiding the first guide rail and the second guide rail.
[0020] Figure 5 is Figure 4 a partial enlarged view of part A in
[0021] Reference numerals: 1, first guide rail; 2, second guide rail; 3, first V-shaped groove; 4, second V-shaped groove; 5, first rack; 6, second rack; 7, cage; 8, groove; 9, roller; 10, gear; 11, first connecting portion; 12, first meshing portion; 13, second connecting portion; 14, second meshing portion; 15, first connecting hole; 16, second connecting hole; 17, first positioning hole; 18, second positioning hole; 19, first avoiding groove; 20, second avoiding groove; 21, opening; 22, rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.
[0023] In the description of the present utility model, it should be understood that for the orientation descriptions, such as the orientations or positional relationships indicated by up, down, left, right, front, back, etc., are based on the orientations or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred modules or elements must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0024] In the description of the present utility model, if the first and second are described only for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.
[0025] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.
[0026] As Figures 1 - 5 shown, the embodiment of the present utility model provides a linear guide rail structure.
[0027] A linear guide rail structure includes a first guide rail 1 and a second guide rail 2. A first V-shaped groove 3 is formed on the first guide rail 1, and a second V-shaped groove 4 is formed on the second guide rail 2. The first V-shaped groove 3 and the second V-shaped groove 4 are arranged oppositely. A first rack 5 is arranged on the first guide rail 1, and a second rack 6 is arranged on the second guide rail 2. The first rack 5 and the second rack 6 are respectively arranged outside the first V-shaped groove 3 and outside the second V-shaped groove 4. A cage 7 is arranged between the first guide rail 1 and the second guide rail 2. A plurality of grooves 8 are arranged in a row along the length of the cage 7 at equal intervals. Rollers 9 are arranged in the grooves 8. A gear 10 is movably arranged on the cage 7. The first rack 5 and the second rack 6 are respectively arranged on both sides of the gear 10. The first rack 5 and the second rack 6 are both meshed with the gear 10.
[0028] In the present utility model, the first rack 5 and the second rack 6 are respectively arranged on the outer sides of the first V-shaped groove 3 and the second V-shaped groove 4. A cage 7 is arranged between the first guide rail 1 and the second guide rail 2. A plurality of grooves 8 are uniformly distributed in a row along the length of the cage 7. Roller 9 is arranged in each of the grooves 8. A gear 10 is movably arranged on the cage 7. The first rack 5 and the second rack 6 are respectively arranged on both sides of the gear 10. The first rack 5 and the second rack 6 are both engaged with the gear 10, so that the gear 10 is engaged with the first rack 5 and the second rack 6 from both sides. The first rack 5 and the second rack 6 are not easily deformed under pressure, and it is not necessary to wire cut grooves in the first V-shaped groove 3 and the second V-shaped groove 4. The present utility model improves the stability of the rack and the overall service life of the linear guide rail, reduces costs at the same time, and enhances the reliability and economy of the equipment operation.
[0029] For a linear guide rail structure described in this embodiment, the first rack 5 includes a first connection portion 11 and a first engagement portion 12. The first connection portion 11 is connected to the side wall of the first guide rail 1. The top of the first connection portion 11 bends towards the first V-shaped groove 3 to form the first engagement portion 12. The second rack 6 includes a second connection portion 13 and a second engagement portion 14. The second connection portion 13 is connected to the side wall of the second guide rail 2. The top of the second connection portion 13 bends towards the second V-shaped groove 4 to form the second engagement portion 14. Specifically, the above setting structure is reasonable, and the fitting degrees of the first rack 5 with the first guide rail 1 and the second rack 6 with the second guide rail 2 are both very high.
[0030] For a linear guide rail structure described in this embodiment, the first rack 5 is detachably connected to the first guide rail 1, and the second rack 6 is detachably connected to the second guide rail 2. Specifically, the above setting facilitates the replacement of the first rack 5 and the second rack 6, and facilitates the disassembly of the first rack 5 and the second rack 6 for maintenance.
[0031] For a linear guide rail structure described in this embodiment, a number of first connection holes 15 are arranged on the outer side of the first rack 5, a number of first fixing holes are arranged on the outer periphery of the first guide rail 1, and the first connection holes 15 and the first fixing holes are arranged in one-to-one correspondence. A number of second connection holes 16 are arranged on the outer side of the second rack 6, a number of second fixing holes are arranged on the outer periphery of the second guide rail 2, and the second connection holes 16 and the second fixing holes are arranged in one-to-one correspondence. Specifically, the above setting facilitates the quick disassembly of the first rack 5 and the second rack 6.
[0032] A linear guide rail structure according to this embodiment, a plurality of first positioning holes 17 are formed in the side wall of the first rack 5, and a plurality of second positioning holes 18 are formed in the side wall of the second rack 6. Specifically, the above settings facilitate the connection of external devices to the first guide rail 1 and the second guide rail 2 through the first positioning holes 17 and the second positioning holes 18 respectively.
[0033] A linear guide rail structure according to this embodiment, a plurality of first avoidance grooves 19 are arranged at intervals on the first rack 5, the first connection hole 15 is located in the first avoidance groove 19, a plurality of second avoidance grooves 20 are arranged at intervals on the second rack 6, and the second connection hole 16 is located in the second avoidance groove 20. Specifically, the above structural settings are reasonable and compact.
[0034] A linear guide rail structure according to this embodiment, a receiving cavity is arranged in the middle of the cage 7, openings 21 are arranged on both sides of the receiving cavity, a rotating shaft 22 is passed through the middle of the gear 10, the rotating shaft 22 is connected to the upper and lower ends of the receiving cavity, and the gear 10 extends out from the opening 21. Specifically, the rotation stability of the gear 10 in the above structure is good, and the overall structure is compact.
[0035] It can be understood that the lengths of the first rack 5 and the second rack 6 are both smaller than the lengths of the first V-shaped groove 3 and the second V-shaped groove 4.
[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the claims and their equivalents.
Claims
1. A linear guide structure, characterized in that: The invention comprises a first guide rail and a second guide rail, wherein a first V-shaped groove is provided on the first guide rail, and a second V-shaped groove is provided on the second guide rail, and the first V-shaped groove and the second V-shaped groove are arranged opposite to each other, a first rack is provided on the first guide rail, and a second rack is provided on the second guide rail, and the first rack and the second rack are respectively arranged on the outer side of the first V-shaped groove and the outer side of the second V-shaped groove, and a retaining frame is provided between the first guide rail and the second guide rail, and a plurality of grooves are evenly distributed in a row on the retaining frame along the length thereof, and rollers are arranged in the grooves, and a gear is movably provided on the retaining frame, and the first rack and the second rack are respectively arranged on both sides of the gear, and the first rack and the second rack are both meshed with the gear.
2. A linear guide structure according to claim 1, characterized in that: The first rack includes a first connecting portion and a first meshing portion, the first connecting portion is connected to the side wall of the first guide rail, and the top of the first connecting portion is bent toward the first V-shaped groove to form the first meshing portion, and the second rack includes a second connecting portion and a second meshing portion, the second connecting portion is connected to the side wall of the second guide rail, and the top of the second connecting portion is bent toward the second V-shaped groove to form the second meshing portion.
3. A linear guide structure according to claim 1, characterized in that: The first rack is detachably connected to the first guide rail, and the second rack is detachably connected to the second guide rail.
4. A linear guide rail structure according to claim 3, characterized in that: A plurality of first connecting holes are arranged on the outer side of the first rack, a plurality of first fixing holes are arranged on the outer periphery of the first guide rail, and the first connecting holes are arranged in a one-to-one correspondence with the first fixing holes; a plurality of second connecting holes are arranged on the outer side of the second rack, a plurality of second fixing holes are arranged on the outer periphery of the second guide rail, and the second connecting holes are arranged in a one-to-one correspondence with the second fixing holes.
5. A linear guide rail structure according to claim 4, characterized in that: A plurality of first positioning holes are formed on the side wall of the first rack, and a plurality of second positioning holes are formed on the side wall of the second rack.
6. A linear guide rail structure according to claim 5, characterized in that: The first rack is provided with a plurality of avoidance grooves at intervals, and the first connection hole is located in the avoidance grooves; the second rack is provided with a plurality of avoidance grooves at intervals, and the second connection hole is located in the avoidance grooves.
7. A linear guide rail structure according to claim 1, characterized in that: A receiving cavity is arranged in the middle of the retaining frame, openings are arranged on both sides of the receiving cavity, a rotating shaft is passed through the middle of the gear, the rotating shaft is connected to the upper and lower ends of the receiving cavity, and the gear extends out from the opening.