CN114992236A - Concave spherical surface tapered roller bearing - Google Patents

Concave spherical surface tapered roller bearing Download PDF

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Publication number
CN114992236A
CN114992236A CN202210736053.4A CN202210736053A CN114992236A CN 114992236 A CN114992236 A CN 114992236A CN 202210736053 A CN202210736053 A CN 202210736053A CN 114992236 A CN114992236 A CN 114992236A
Authority
CN
China
Prior art keywords
roller
raceway
ring
retainer
tapered roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210736053.4A
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Chinese (zh)
Inventor
燕敬祥
张士玉
燕修磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Camery Kmr Bearing Science & Technology Co ltd
Original Assignee
Shandong Camery Kmr Bearing Science & Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Camery Kmr Bearing Science & Technology Co ltd filed Critical Shandong Camery Kmr Bearing Science & Technology Co ltd
Priority to CN202210736053.4A priority Critical patent/CN114992236A/en
Publication of CN114992236A publication Critical patent/CN114992236A/en
Pending legal-status Critical Current

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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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/34—Rollers; Needles
    • F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
    • F16C33/366—Tapered rollers, i.e. rollers generally shaped as truncated cones
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A concave spherical tapered roller bearing comprises an outer ring, an inner ring, a roller and a retainer. The outer ring is of a circular ring structure, the outer diameter of the outer ring is an outer cylindrical surface, and the outer raceway is in the shape of an eccentric convex spherical surface; the inner ring is of a circular structure, the inner diameter of the inner ring is a cylindrical surface, the raceway of the inner ring is in the shape of an eccentric convex spherical surface, the connecting line of the circle center of the outer raceway and the circle center of the inner raceway passes through the geometric central point of the roller, and the included angle between the connecting line and the radial plane of the bearing is less than 45 degrees; the rolling surface of the roller is in a concave spherical shape and is made of bearing steel or ceramic; the retainer is of a conical ring structure and is made of nylon or brass. The concave spherical tapered roller bearing adopting the design scheme of the invention has the remarkable advantages of high rotating speed, low friction, low temperature rise, easy processing, high reliability, the function of main shaft misalignment compensation and the like.

Description

Concave spherical surface tapered roller bearing
Technical Field
The invention relates to the technical field of bearings, in particular to a concave spherical tapered roller bearing.
Background
The parts designed by the conventional tapered roller bearing comprise an outer ring, an inner ring, a tapered roller, a retainer and the like, wherein the raceway of the outer ring is an inner conical surface, the raceway of the inner ring and the rolling surface of the roller are outer conical surfaces, the retainer is usually made of a stamped steel plate, can bear radial load and axial load in a single direction and is limited by structural design, the bearing does not allow the misalignment of a main shaft, and the main shaft inevitably receives the action of gravity, so that the misalignment generally exists in practical application; the inner ring is provided with two flange structures for axially limiting the roller, so that a corresponding over-travel groove must be processed at the intersection of the flange and the roller path in order to prevent interference with the roller chamfer and facilitate grinding of the roller path.
Disclosure of Invention
The invention aims to provide a concave spherical tapered roller bearing, wherein an inner ring can be freely aligned relative to an outer ring assembly, the arrangement of a flange, an overtravel groove and roller convexity can be eliminated, and the concave spherical tapered roller bearing has the remarkable advantages of high rotating speed, low friction, low temperature rise, easiness in processing, high reliability, a main shaft misalignment compensation function and the like.
The purpose of the invention can be realized by adopting the following technical scheme: a concave spherical tapered roller bearing comprises an outer ring, an inner ring, a roller and a retainer.
The outer ring is of a circular structure, the outer diameter of the outer ring is an outer cylindrical surface, and the outer raceway is in the shape of an eccentric convex spherical surface; the inner ring is of a circular structure, the inner diameter of the inner ring is a cylindrical surface, the raceway of the inner ring is in the shape of an eccentric convex spherical surface, the connecting line of the circle center of the outer raceway and the circle center of the inner raceway passes through the geometric central point of the roller, and the included angle between the connecting line and the radial plane of the bearing is less than 45 degrees; the rolling surface of the roller is in a concave spherical surface shape and is made of bearing steel or ceramic; the retainer is of a conical ring structure and is made of nylon or brass.
The center of the convex spherical surface of the inner ring raceway and the rotary central axis of the bearing are converged into a point.
The curvature radius of the concave spherical surface of the rolling surface of the roller is matched with that of the raceway of the inner ring, the ratio of the front radius to the rear radius to the curvature radius is 1.01-1.03, and the planes on two sides of the roller can be provided with roller recesses.
The curvature radius of the convex spherical surface of the outer ring raceway is consistent with that of the inner ring raceway.
The diameter of the cage pocket is matched with the diameter of the rolling surface of the roller, and the ratio of the cage pocket diameter to the rolling surface of the roller is 1.004-1.01.
And the rotation axes of the outer diameter cylindrical surface of the retainer and the inner diameter cylindrical surface of the retainer are respectively superposed with the rotation central axis of the bearing.
And the retainer outer diameter conical surface generatrix and the retainer inner diameter conical surface generatrix are respectively symmetrical about the roller rotating axis.
And the outer diameter cylindrical surface generatrix of the retainer, the outer diameter conical surface generatrix of the retainer and the right side end surface line of the roller are intersected at one point.
And the inner diameter cylindrical surface bus of the retainer, the inner diameter conical surface bus of the retainer and the left side end surface line of the roller are intersected at one point.
Drawings
FIG. 1 is a schematic diagram of a tapered roller bearing of a prior art standard design.
FIG. 2 is a schematic view of a concave spherical tapered roller bearing according to the present invention.
FIG. 3 is a schematic diagram of an outer ring of a concave spherical tapered roller bearing according to the present invention.
FIG. 4 is a schematic view of the inner ring of the concave spherical tapered roller bearing of the present invention.
FIG. 5 is a schematic diagram showing the fit between the retainer and the roller of the concave spherical tapered roller bearing according to the present invention.
In the figure: 1 outer ring, 1.1 outer diameter, 1.2 outer raceway, 1.4 bearing rotation central axis, 2 inner ring, 2.1 inner ring raceway, 2.2 inner diameter, 3 rollers, 3.1 roller rolling surface, 3.2 roller rotation axis, 4 retainer, 4.1 retainer pocket hole, 4.2 retainer outer diameter cylindrical surface, 4.3 retainer inner diameter cylindrical surface, 4.4 retainer outer diameter conical surface, 4.5 retainer inner diameter conical surface
Detailed Description
Specific embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in figures 2 to 5: the invention relates to a concave spherical tapered roller bearing, which comprises an outer ring 1, an inner ring 2, rollers 3 and a retainer 4.
The outer ring 1 is of a circular structure, the outer diameter 1.1 is an outer cylindrical surface, and the outer raceway 1.2 is in the shape of an eccentric convex spherical surface; the inner ring 2 is of a circular structure, the inner diameter 2.2 is a cylindrical surface, the raceway 2.1 of the inner ring is in the shape of an eccentric convex spherical surface, the connecting line of the circle center of the outer raceway 1.2 and the circle center of the inner raceway 2.1 passes through the geometric central point of the roller 3, and the included angle between the connecting line and the radial plane of the bearing is less than 45 degrees; the rolling surface 3.1 of the roller 3 is in a concave spherical shape and is made of bearing steel or ceramic; the retainer 4 is a conical ring structure and is made of nylon or brass. The center of the convex spherical surface of the inner ring raceway 2.1 and the rotary central axis 1.4 of the bearing are converged into a point. The curvature radius of the concave spherical surface of the roller rolling surface 3.1 is matched with the curvature radius of the inner ring raceway 2.1, the ratio of the front radius to the rear radius to the curvature radius is 1.01-1.03, and the planes at two sides of the roller 3 can be provided with roller recesses. The curvature radius of the convex spherical surface of the outer ring raceway 1.2 is consistent with that of the inner ring raceway 2.1. The diameter of the cage pocket 4.1 is matched with the diameter of the roller rolling surface 3.1, and the ratio of the diameter of the cage pocket to the diameter of the roller rolling surface is 1.004-1.01. The rotating axes of the outer diameter cylindrical surface 4.2 of the retainer and the inner diameter cylindrical surface 4.3 of the retainer are respectively superposed with the rotating central axis 1.4 of the bearing. The generatrix of the retainer outer diameter conical surface 4.4 and the generatrix of the retainer inner diameter conical surface 4.5 are respectively symmetrical about the roller rotation axis 3.2. The generatrix of the outer diameter cylindrical surface 4.2 of the retainer, the generatrix of the outer diameter conical surface 4.4 of the retainer and the right side end surface line of the roller 3 are intersected at one point. The generatrix of the inner diameter cylindrical surface 4.3 of the retainer, the generatrix of the inner diameter conical surface 4.5 of the retainer and the left end surface line of the roller 3 are intersected at one point.
The beneficial effects of the invention are:
the outer ring raceway 1.2 is changed into a convex spherical surface from an original linear conical surface, the inner ring raceway 2.1 is changed into a convex spherical surface from an original linear conical surface, and the roller rolling surface 3.1 is changed into a concave spherical surface from an original conical surface, so that the inner ring 2 can be freely aligned relative to the outer ring 1 component by matching reasonable curvature radius of the outer ring raceway 1.2, curvature radius of the inner ring raceway 2.1 and curvature radius of the roller rolling surface 3.1, the tapered roller bearing which originally does not have the main shaft misalignment compensation function is changed into the tapered roller bearing with the main shaft misalignment compensation function, and the problem of premature failure of the bearing caused by the main shaft misalignment in the original design is fundamentally solved; because of the design of the convex spherical surface of the outer ring raceway 1.2 and the concave spherical surface of the roller rolling surface 3.1, the outer ring 1 and the inner ring 2 have the axial positioning function of the roller 3, the arrangement of the rib and the roller convexity of the inner ring in the original design can be eliminated, the processing procedures of the rib, the overrun groove and the roller convexity are reduced, the friction resistance between the end surface of the roller 3 and the rib of the inner ring 2 when the bearing operates is avoided, the processing difficulty and the starting torque are obviously reduced, the planes at two sides of the roller 3 can be provided with roller recesses, the friction resistance between the plane of the roller 3 and the retainer 4 is further reduced, the operating temperature rise is further reduced, and the ultimate rotating speed of the bearing is improved; the arrangement of the concave spherical surfaces of the rolling surfaces 3.1 of the rollers enables the beam width between the two pockets 4.1 of the retainer 4 to be further strengthened, and therefore, the roller cage is applicable to a strengthened design with larger size and more quantity than a standard design. In conclusion, the concave spherical tapered roller bearing has the remarkable advantages of high rotating speed, low friction, low temperature rise, easiness in processing, high reliability, function of main shaft misalignment compensation and the like.

Claims (9)

1. A concave spherical tapered roller bearing comprises an outer ring, an inner ring, a roller and a retainer.
The outer ring is of a circular ring structure, the outer diameter of the outer ring is an outer cylindrical surface, and the outer raceway is in the shape of an eccentric convex spherical surface; the inner ring is of a circular structure, the inner diameter of the inner ring is a cylindrical surface, the raceway of the inner ring is in the shape of an eccentric convex spherical surface, the connecting line of the circle center of the outer raceway and the circle center of the inner raceway passes through the geometric central point of the roller, and the included angle between the connecting line and the radial plane of the bearing is less than 45 degrees; the rolling surface of the roller is in a concave spherical shape and is made of bearing steel or ceramic; the retainer is of a conical ring structure and is made of nylon or brass.
2. The tapered roller bearing with concave spherical surface as claimed in claim 1, wherein the center of the convex spherical surface of the inner race raceway converges with the center axis of rotation of the bearing at a point.
3. The tapered roller bearing with concave spherical surface as claimed in claim 1, wherein the radius of curvature of the concave spherical surface of the rolling surface of the roller is matched with the radius of curvature of the raceway of the inner ring, the ratio of the radius to the curvature of the front and rear surfaces is 1.01-1.03, and the two side surfaces of the roller can be provided with roller pockets.
4. The tapered roller bearing with concave spherical surface as claimed in claim 1, wherein the radius of curvature of the convex spherical surface of the raceway of the outer ring is identical to the radius of curvature of the raceway of the inner ring.
5. The tapered roller bearing according to claim 1, wherein the cage pocket diameter is matched to the roller rolling surface diameter at a ratio of 1.004 to 1.01.
6. The tapered roller bearing according to claim 1, wherein the axes of rotation of the outer diameter cylindrical surface of the retainer and the inner diameter cylindrical surface of the retainer are respectively coincident with the central axis of rotation of the bearing.
7. The tapered roller bearing according to claim 1, wherein the generatrix of the outer diameter conical surface of the retainer and the generatrix of the inner diameter conical surface of the retainer are respectively symmetrical with respect to the rotational axis of the roller.
8. The tapered roller bearing according to claim 1, wherein the generatrix of the outer diameter cylindrical surface of the cage, the generatrix of the outer diameter conical surface of the cage, and the end surface line of the right side of the roller intersect at a point.
9. The concavely spherical tapered roller bearing of claim 1, wherein the cage inner diameter cylindrical surface generatrix, the cage inner diameter conical surface generatrix, and the roller left side end surface line intersect at a point.
CN202210736053.4A 2022-06-27 2022-06-27 Concave spherical surface tapered roller bearing Pending CN114992236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210736053.4A CN114992236A (en) 2022-06-27 2022-06-27 Concave spherical surface tapered roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210736053.4A CN114992236A (en) 2022-06-27 2022-06-27 Concave spherical surface tapered roller bearing

Publications (1)

Publication Number Publication Date
CN114992236A true CN114992236A (en) 2022-09-02

Family

ID=83037343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210736053.4A Pending CN114992236A (en) 2022-06-27 2022-06-27 Concave spherical surface tapered roller bearing

Country Status (1)

Country Link
CN (1) CN114992236A (en)

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