NL2029265B1 - Heavy-load and low-noise roller rolling guide rail pair - Google Patents

Heavy-load and low-noise roller rolling guide rail pair Download PDF

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Publication number
NL2029265B1
NL2029265B1 NL2029265A NL2029265A NL2029265B1 NL 2029265 B1 NL2029265 B1 NL 2029265B1 NL 2029265 A NL2029265 A NL 2029265A NL 2029265 A NL2029265 A NL 2029265A NL 2029265 B1 NL2029265 B1 NL 2029265B1
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Netherlands
Prior art keywords
guide rail
roller
heavy
rollers
load
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NL2029265A
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Dutch (nl)
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Shan Xianmin
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Shan Xianmin
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/065—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with rollers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A heavy-load and low-noise roller rolling guide rail pair is provided. The heavy-load and low-noise roller rolling guide rail pair includes a guide rail (1) and a slider (2) matched with the guide rail (1), Wherein a top surface of the guide rail (1) is a main moving surface for bearing a normal pressure of a moving heavy-load object, a row of large rollers (3) are located on the top surface of the guide rail (1), guide surfaces for bearing force are arranged on a left side and a right side of the guide rail (1), two rows of small rollers (4) are located on the left side and right side respectively, to suppress a deviation tendency of the moving heavy-load object due to left-right movement and radial rotation, flanges (5) are arranged on two wings of the slider (2), and the row of large rollers (3) and the two rows of small rollers (4) are arranged on three ground planes of the slider (2) and run endless loops through a returner (6). Through the design of the the row of large rollers and the two rows of small rollers, the returner is simpler in design, the circulation of the row of large rollers and the two rows of small rollers are smoother, the bearing load is greatly enhanced. The device is simple in structure, convenient and easy to use and good in application prospect.

Description

HEAVY-LOAD AND LOW-NOISE ROLLER ROLLING GUIDE RAIL PAIR
TECHNICAL FIELD
[01] The present disclosure relates to the technical field of linear guide devices, in particular to a heavy-load and low-noise roller rolling guide rail pair which is a novel combination of mechanical parts and wide in application range, and particularly relates to a novel linear rolling functional component.
BACKGROUND ART
[02] The development history of human mechanical engineering is also a development history of scientific and technological progress. Two mechanical parts which form a guide rail pair and have planes contacting with each other and moving relative to each other in the past is called a lower pair guide rail, as shown in FIG. 1.
The lower pair guide rail has a large static friction coefficient in movement, a driving power from a power source is large, the surfaces of the parts are prone to heating and abrasion in motion, and requirements of production cannot be met. Rolling between two parts 1s developed in continuous production practice exploration, the two parts having balls and rollers in the movement plane of the two parts as rolling bodies, is called as a higher pair guide rail, as shown in FIG. 2. The dynamic and static friction coefficient of the higher pair guide rail is small in movement, so that the driving power is small, and parts are not prone to heating and abrasion. A typical case is that a previously used linear motion lower pair guide rail is generally changed into a linear rolling higher pair guide rail, and many manufacturers of higher pair guide rail have emerged. The linear motion technology of mechanical engineering takes a big step and achieves a good application effect.
[03] Specifically, the linear rolling guide rail has two types, namely balls linear rolling guide rail and rollers linear rolling guide rail. The first type is a linear rolling guide rail with steel balls as rolling bodies, as shown in FIG. 3. The rolling path for bearing the balls is in point contact with the balls, so that the bearing capacity is low.
Vibration is easily generated in the working operation process, large cutting force machining cannot be borne, and the increasing use requirements of mechanical products cannot be met. Afterwards, the form of the guide rail has evolved into a linear roller rolling guide rail with rollers as rolling bodies, as shown in FIG. 4. Namely, four plane rolling paths distributed at an angle of 45 degrees are machined on a left side and right side of the guide rail, and four rows of rollers are in contact with the four plane rolling paths. Compared with the ball rolling guide rail, the bearing capacity of the guide rail pair is truly improved. However, the problem of using performance is generated. Due to the fact that the rolling path surface of the slider which receiving force is located at the opening portion of the slider, after the bearing load reaches a certain value, horizontal component force exists in the 45-degree direction, so that the opening portion of the slider is enlarged and deforms. Therefore, the rolling performance and the bearing capacity of the guide rail pair are greatly reduced. And even a sliding phenomenon of the rolling bodies is caused in the moving process under certain conditions. Once sliding, the guide rail surface must be scratched to generate deep marks and scrapped.
[04] In order to solve the problem, the inventor designs a novel linear roller rolling guide rail with heavy load as shown in FIG. 5. The roller bearing heavy load in the slider is arranged on the plane at a top of the guide rail, and two rolling path planes are reserved on the left side and right side of the guide rail, so that heavy load can be borne, and such device is called as a heavy-load and low-noise roller rolling guide rail pair.
SUMMARY
[05] In view of the performance defect of the linear rolling guide rail pair in the current market, the embodiments aims to provide a novel heavy-load and super-heavy-load linear rolling guide rail, so as to meet better and higher use requirements of different users.
[06] The present disclosure provides a heavy-load and low-noise roller rolling guide rail pair which includes a guide rail 1 and a slider 2 matched with the guide rail I.
The top surface of the guide rail 1 is a main moving surface for bearing a normal pressure of a moving heavy-load object. A row of large rollers 3 are located on a top surface of the guide rail 1, the large rollers 3 do not contact with each other, guide surfaces for bearing force are arranged on a left side and a right side of the guide rail 1.
Two rows of small rollers 4 are located on the left side and right side respectively, to suppress a deviation tendency of the moving heavy-load object due to left-right movement and radial rotation. Flanges 5 are arranged on two wings of the slider 2, and the row of large rollers and the two rows of small rollers are arranged on three ground planes of the slider 2 and run endless loops through a returner 6.
[07] In some embodiments, taking a 45-type guide rail as an example, the large roller 3 may be 6 mm in diameter and 30 mm in length.
[08] In some embodiments, small steps may be arranged at the left and right ends of the roller 3, and the small steps may be 2 mm in diameter and 2 mm in length.
[09] In some embodiments, an angle between the center of the small roller 4 and a direction of the vertical bearing force may be 45°.
[10] In some embodiments, the small rollers 4 may be 4.5 mm in diameter and 6 mm in length.
[11] In some embodiments, a gap of 0.1 mm may be formed between a groove width of the main moving surface of the guide rail 1 and the large roller 3 with a length of 30 mm.
[12] In some embodiments, the guide surfaces of 45-degree angles on the left side and right side of the guide rail 1 and the top surface thereof may be clamped and ground on a guide rail grinding machine at a time, and straightness of the guide surfaces on the left side and right side and the top surface may be consistent.
[13] Compared with the conventional art, the embodiments have the following technical effects. The two rows of rollers at the opening end of the slider of a traditional roller guide rail are combined into a row of large rollers which are arranged in a slider groove in the top of the guide rail, as shown in FIG. 5, so that the large rollers are not separated from the slider under any condition. The large rollers are not in contact with each other and do not impact each other in the operation process, so that the noise can be reduced, and the operation is more stable. A gravity P of a bearing object is vertically transmitted to the top surface of the guide rail via the rollers, the force receiving by the guide rail is P, and the component force is zero. The gravity P of the bearing object of the roller rolling guide rail in FIG. 4 acts on the left side and right side of the guide rail in the 45-degree direction via the two rows of rollers at the opening part of the slider, the force received by the guide rail is P x sin 45°, and the slider experiences lateral component force. The larger the bearing capacity of the roller rolling guide rail is, the larger the lateral component force of the opening portion of the slider is, so that the opening is enlarged and deforms, normal operation of the slider is seriously affected, and even the roller sliding phenomenon occurs.
[14] In view of the performance defects of various guide rail in the current market, the heavy-load and low-noise roller rolling guide rail pair is designed. The main bearing force acts on the large rollers at the top plane of the guide rail, and a contact width is larger than the contact width of the roller in the 45-degree direction of the roller rolling guide rail in FIG. 4. The rated static load of the heavy-load and low-noise roller rolling guide rail pair is much larger than that of the roller rolling guide rail in
FIG. 4. Taking the roller guide rail pair with a roller of 4.5 mm diameter as an example, the sum of the contact lengths of the two rows of rollers with the guide rail surface is 12 mm for the rollers with the diameters of 4.5 mm in FIG. 4. The contact length of the main bearing roller of the roller rolling guide rail in FIG. 5 with the plane of the guide rail is 30 mm and is 2.5 times that of the roller rolling guide rail of FIG. 4, and no lateral force component exists. The heavy load received by the guide rail is normal pressure, and the effect is far greater than that of the roller rolling guide rail in FIG. 4.
[15] Due to the advantages, the rigidity of the rated dynamic load and the live load (cutting force load in a machined part) in practical work is also greatly enhanced.
Therefore, the working performance of the heavy-load and low-noise roller rolling guide rail pair in FIG. 5 is close to that of a harden rail of a machine tool. Therefore,
light operation of a sliding rail and the rigid cutting effect of the harden rail are both achieved.
[16] The height of the guide rail is reduced compared with that of a traditional guide rail, and the operation is more stable. 117] The main force receiving surface runs parallel to the plane of the guide rail, and compared with a traditional guide rail running in a direction parallel to the 45-degree inclined plane, the slider has better rolling performance.
[18] Compared with a traditional roller guide rail, the roller guide rail pair is simpler in the aspect of returner design. A traditional slider is provided with four rows of rollers in the 45-degree direction, the end face of the returner is limited by the structure, rolling paths of the returner are overlapped, resulting in a complex structure, and a poor manufacturability. Only two rows of rolling paths are arranged in the 45-degree direction of the slider, and the circulation of roller is smoother.
[19] The equipment required for installation of the guide rail according to the present disclosure has good compatibility and can be shared by the roller rolling guide rail in FIG. 4, and is quicker, simpler and more convenient in the replacing and improvement process, and better in applicability.
[20] The device is simple in structure, convenient and easy to use and good in application prospect.
BRIEF DESCRIPTION OF THE DRAWINGS
[21] In order to more clearly illustrate technical solutions in embodiments of the present disclosure, figures required for describing the embodiments will be briefly described below. It should be understood that the following attached figures illustrate only some embodiments of the present disclosure and are therefore not to be considered limiting of scope. It is within the scope of protection of the present disclosure for those skilled in the art to derive other relevant figures from these figures under the premise of without contributing creative labor.
[22] FIG. 1 is a schematic diagram of a linear motion lower pair guide rail;
[23] FIG. 2 is a schematic diagram of a linear motion higher pair guide rail;
[24] FIG. 3 is a schematic diagram of a ball rolling guide rail;
[25] FIG. 4 is a schematic diagram of a roller rolling guide rail;
[26] FIG. 5 is a section view of a heavy-load and low-noise roller rolling guide rail pair; and
[27] FIG. 6 is a schematic structural diagram of the heavy-load and low-noise roller rolling guide rail pair.
[28] List of reference characters: 1 guide rail; 2 slider; 3 large roller; 4 small roller; 5 flange; and 6 returner.
DETAILED DESCRIPTION
[29] In view of the defects in the prior art, the technical scheme of the present disclosure is provided through long-term research and mass practice. The following clearly and completely describes the technical schemes in the embodiments of the present disclosure with reference to the attached figures in the embodiments of the present disclosure.
[30] A heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure includes a guide rail 1 and a slider 2 matched with the guide rail 1. The top surface of the guide rail 1 is a main moving surface for bearing normal pressure of a moving heavy-load object, a row of large rollers 3 are located on the top surface of the guide rail 1, the large rollers 3 do not contact with each other. The guide rail 1 is provided on two sides thereof with guide surfaces for bearing force, has two rows of small rollers 4 located on the two sides respectively to suppress a deviation tendency of the moving object due to left-right movement and radial rotation of the moving object. Flanges 5 are arranged on two wings of the sliding block 2, and the three rows of rollers are arranged on three ground planes of the slider 2, and run in endless loops through a returner 6.
[31] According to the heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure, taking a 45-type guide rail as an example, the large roller 3 is 6 mm in diameter and 30 mm in length.
[32] According to the heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure, small steps are designed at the two ends of the roller 3, and the small step is 2 mm in diameter and 2 mm in length. 133] According to the heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure, an included angle between the central line of the small roller 4 and a direction of the vertical bearing force is 45°.
[34] According to the heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure, the small roller 4 1s 4.5 mm in diameter and 6 mm in length.
[35] According to the heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure, a gap of 0.1 mm is formed between the groove width of the main moving surface of the guide rail 1 and the large roller 3 with the length of 30 mm.
[36] According to the heavy-load and low-noise roller rolling guide rail pair provided in the embodiment of the present disclosure, the guide surfaces with 45-degree included angles at the two sides of the guide rail 1 and the top surface are clamped and ground on a guide rail grinding machine at a time, and the straightness of the guide surfaces on the left side and right side and the top surface is consistent.
[37] Compared with the prior art, the heavy-load and low-noise roller rolling guide rail pair has the beneficial effects that two rows of rollers at the opening end of the slider of a traditional roller guide rail pair are combined into a row of large rollers which are arranged in a groove of the slider at the top of the guide rail, as shown in
FIG. 5, so that the large rollers are not separated from the slider under any condition.
The gravity P of a bearing object is vertically transmitted to the top surface of the guide rail through the rollers, the force received by the guide rail is P, and the component force which the slider experiences is zero. The gravity P of the bearing object of the roller rolling guide rail pair in FIG. 4 acts on the two sides of the guide rail in the 45-degree direction through the two rows of rollers at the opening part of the slider, the force received by the guide rail is P * sin 45°, and the slider experiences lateral component force. The larger the bearing capacity of the roller rolling guide rail is, the larger the lateral component force of the opening part of the slider is, which causes the opening to enlarge and deform, seriously affects normal operation of the slider to be, and even leads to the roller sliding phenomenon.
[38] The heavy-load and low-noise roller rolling guide rail pair is designed in view of the defects of various guide rail performances in the current market, the main bearing force acts on the large rollers at the top plane of the guide rail, and a contact width is larger than the contact width of the roller in the 45-degree direction of the roller rolling guide rail in FIG. 4. The rated static load of the heavy-load and low-noise roller rolling guide rail pair is much larger than that of the roller rolling guide rail in
FIG. 4. Taking the roller guide rail pair with a roller of 4.5 mm diameter as an example, the sum of the contact lengths of the two rows of rollers with the guide rail surface is 12 mm for the rollers with the diameters of 4.5 mm in FIG. 4. The contact length of the main bearing roller of the roller rolling guide rail in FIG. 5 with the plane of the guide rail is 30 mm and is 2.5 times that of the roller rolling guide rail of FIG. 4, and no lateral force component exists. The heavy load received by the guide rail is normal pressure, and the effect is far greater than that of the roller rolling guide rail in FIG. 4.
[39] Due to the advantages, the rigidity of the rated dynamic load and the live load (cutting force load in a machined part) in practical work is also greatly enhanced.
Therefore, the working performance of the heavy-load and low-noise roller rolling guide rail pair in FIG. 5 is close to that of a harden rail of a machine tool. Therefore, light operation of a sliding rail and the rigid cutting effect of the harden rail are both achieved.
[40] The height of the guide rail is reduced compared with that of a traditional guide rail, and the operation is more stable.
[41] The main force receiving surface runs parallel to the plane of the guide rail, and compared with a traditional guide rail running in a direction parallel to the 45-degree inclined plane, the slider has better rolling performance. Compared with a traditional roller guide rail, the roller guide rail pair is simpler in the aspect of returner design. A traditional slider is provided with four rows of rollers in the 45-degree direction, the end face of the returner is limited by the structure, rolling paths of the returner are overlapped, resulting in a complex structure, and the poor manufacturability. In the present disclosure, only two rows of rolling paths are arranged in the 45-degree direction of the slider, and the circulation of rollers is smoother.
[42] The equipment required for installation of the guide rail according to the present disclosure has good compatibility and can be shared by the roller rolling guide rail in FIG. 4, and is quicker, simpler and more convenient in the replacing and improvement process, and better in applicability.
[43] The device is simple in structure, convenient and easy to use and good in application prospect.
[44] According to the heavy-load and low-noise roller rolling guide rail pair provided by the present disclosure, it should be understood that the above embodiments only illustrate the technical conceptions and characteristics of the present disclosure, and aim to enable persons familiar with the technology to understand the content of the present disclosure and implement therefrom, but not to limit the protective scope of the present disclosure. All equivalent changes or modifications in accordance with the spirit disclose the present disclosure should be contained in the protective scope of the present disclosure.

Claims (7)

Conclusies l. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen die een geleiderail (1) en een schuif (2) die past bij de geleiderail (1) omvat, waarbij een bovenste oppervlak van de geleiderail (1) een voornaamst bewegend oppervlak is voor het dragen van een normaaldruk van een bewegend object voor zware belastingen, waarbij een rij van grote rollers (3) zich bevindt op het bovenste oppervlak van de geleiderail (1), waarbij de grote rollers (3) geen contact maken met elkaar, waarbij geleideoppervlakken voor het dragen van kracht gerangschikt zijn aan een linkerkant en een rechterkant van de geleiderail (1), waarbij twee rijen van kleine rollers (4) zich respectievelijk bevinden aan de linkerkant en rechterkant, om een afwijkingsneiging van het bewegende object voor zware belastingen ten gevolge van links-rechtsbeweging en radiale rotatie te onderdrukken, waarbij flenzen (5) gerangschikt zijn op twee vleugels van de schuif (2), en waarbij de rij van grote rollers (3) en de twee rijen van kleine rollers (4) gerangschikt zijn op drie grondvlakken van de schuif (2) en eindeloze lussen doorlopen door een terugkeermiddel (6).Conclusions l. Heavy duty low noise roller guide rail pair comprising a guide rail (1) and a slide (2) mating with the guide rail (1), an upper surface of the guide rail (1) being a major moving surface for supporting a normal pressure of a moving object for heavy loads, where a row of large rollers (3) is located on the upper surface of the guide rail (1), the large rollers (3) do not contact each other, where guide surfaces are arranged for bearing force on a left side and a right side of the guide rail (1), with two rows of small rollers (4) located on the left side and right side respectively, to accommodate a deviation tendency of the moving object for heavy loads due to left-right movement and radial rotation where flanges (5) are arranged on two wings of the gate (2), and where the row of large rollers (3) and the two rows of small rollers (4) are arranged on three bases of the gate (2 ) and run endless loops through a return means (6). 2. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen volgens conclusie 1, waarbij, een 45-type geleiderail als voorbeeld nemende, de grote roller (3) een diameter van 6 mm en een lengte van 30 mm heeft.The low-noise heavy-duty roller-roller guide rail pair according to claim 1, wherein, taking a 45-type guide rail as an example, the large roller (3) has a diameter of 6 mm and a length of 30 mm. 3. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen volgens conclusie 1, waarbij kleine treden gerangschikt zijn bij twee uiteinden van de grote rollers (3), en waarbij de kleine treden een diameter van 2 mm en een lengte van 2 mm hebben.The low-noise heavy-duty roller-roller guide rail pair according to claim 1, wherein small steps are arranged at two ends of the large rollers (3), and wherein the small steps have a diameter of 2 mm and a length of 2 mm. 4. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen volgens conclusie 1, waarbij een hoek tussen een middellijn van de kleine roller (4) en een richting van de verticale draagkracht 45° is.The low-noise heavy-duty roller-roller guide rail pair according to claim 1, wherein an angle between a centerline of the small roller (4) and a direction of the vertical bearing force is 45°. 5. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen volgens conclusie 1, waarbij de kleine rollers (4) een diameter van 4,5 mm en een lengte van 6 mm hebben.The heavy duty low noise roller-roller guide rail pair according to claim 1, wherein the small rollers (4) have a diameter of 4.5 mm and a length of 6 mm. 6. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen volgens conclusie 1, waarbij een spleet van 0,1 mm gevormd is tussen een groefbreedte van het voornaamste bewegende oppervlak van de geleiderail (1) en de grote roller (3) met een lengte van 30 mm.The heavy duty low noise roller-roller guide rail pair according to claim 1, wherein a gap of 0.1 mm is formed between a groove width of the main moving surface of the guide rail (1) and the large roller (3) having a length of 30 mm. 7. Geluidsarme rollerrollendegeleiderailpaar voor zware belastingen volgens conclusie 1, waarbij de geleideoppervlakken van 45-graden-hoeken aan de linkerkant en rechterkant van de geleiderail (1) en het bovenste oppervlak daarvan tegelijk geklemd en geaard zijn op een geleiderailslijpmachine, en waarbij de rechtheid van de geleideoppervlakken aan de linkerkant en rechterkant en het bovenste oppervlak consistent is.The heavy duty low-noise roller-roller guide rail pair according to claim 1, wherein the guide surfaces of 45-degree angles on the left and right sides of the guide rail (1) and the upper surface thereof are simultaneously clamped and grounded on a guide rail grinding machine, and wherein the straightness of the guide surfaces on the left and right sides and the top surface is consistent.
NL2029265A 2021-09-28 2021-09-28 Heavy-load and low-noise roller rolling guide rail pair NL2029265B1 (en)

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Application Number Priority Date Filing Date Title
NL2029265A NL2029265B1 (en) 2021-09-28 2021-09-28 Heavy-load and low-noise roller rolling guide rail pair

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