Angular contact ball bearing with adjustable pre-tightening force
By combining the guide assembly and the preload assembly, the convenience and flexibility of adjusting the preload of the adjustable preload angular contact ball bearing are solved, achieving stable support of the inner ring and improving rotational accuracy, thus extending its service life.
Patent Information
- Application Number
- CN202520794404.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-04-24
AI Technical Summary
Existing adjustable preload angular contact ball bearings have poor convenience and flexibility in adjusting preload, which affects their performance.
The design employs a combination of guide components and pre-tightening components. The guide components guide and support the first and second inner rings, while the pre-tightening components clamp and fix them in place. By adjusting the guide components and pre-tightening components, the working clearance can be adjusted, reducing vibration and noise and improving rotational accuracy.
It improves the flexibility and convenience of pre-tightening and fixing adjustment of the inner ring, reduces vibration and noise, extends service life, and improves rotational accuracy and performance.
Smart Images
Figure CN223806478U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of angular contact ball bearings, in particular to a pre-tightening force adjustable angular contact ball bearing. BACKGROUND
[0002] The pre-tightening technology is to eliminate the working play of the bearing by applying a certain pre-load to the bearing, and to improve the stiffness and working accuracy of the bearing components, reduce the vibration and noise of the shaft, and appropriate pre-tightening can increase the stiffness of the bearing, improve the rotation accuracy, reduce the vibration and noise, and prolong the service life.
[0003] At present, in the existing pre-tightening force adjustable angular contact ball bearing, such as the patent with the announcement number CN218971674U, the utility model discloses a pre-tightening force adjustable angular contact ball bearing structure, including angular contact ball bearing and the tooling sleeve for the linkage with outside tooling, the angular contact ball bearing includes the outer ring and the inner ring, the tooling sleeve is set on the outer ring, the tooling sleeve is provided with the deduction board for being deducted on the right side wall of the outer ring, still includes the inner hydraulic cylinder, the outer hydraulic cylinder is set on the inner hydraulic cylinder, the drive piece for driving the inner hydraulic cylinder to move and being deducted on the left side wall of the outer ring is arranged between the outer hydraulic cylinder and the inner hydraulic cylinder.
[0004] But the structure is found in use, the convenience and flexibility of the structure to the pre-tightening force adjustment are poor, and the effect of adjusting use is reduced. UTILITY MODEL CONTENTS
[0005] To solve the above technical problems, the utility model provides a pre-tightening force adjustable angular contact ball bearing which reduces the vibration and noise of the first inner ring and the second inner ring, prolongs the service life, improves the rotation accuracy, improves the pre-tightening and fixing adjustment flexibility and convenience of the first inner ring and the second inner ring, and improves the use effect.
[0006] The pre-tightening force adjustable type angular contact ball bearing of the utility model, including outer ring, outer ring is installed on bearing seat, still include guide assembly, pre-tightening assembly, first inner ring, second inner ring, first arc slot and second arc slot, first inner ring and second inner ring are oppositely arranged between, first arc slot is arranged on the outer side wall of first inner ring and second inner ring, second arc slot is arranged on the outer side wall of outer ring, and the position of first arc slot and second arc slot is oppositely arranged, guide assembly is arranged between first arc slot and second arc slot, and guide assembly is used to guide and support the rotation of first inner ring and second inner ring, pre-tightening assembly is arranged on the outer side wall of outer ring, and pre-tightening assembly is used to compress and fix first inner ring and second inner ring, first inner ring and second inner ring are oppositely installed on outer ring through guide assembly, then first inner ring and second inner ring are oppositely compressed through pre-tightening assembly, so that the working play between first inner ring and second inner ring and guide assembly is adjusted, the vibration noise of first inner ring and second inner ring is reduced, the service life is prolonged, the rotation precision is improved, the pre-tightening fixing adjustment flexibility and convenience of first inner ring and second inner ring are improved, and the use effect is improved.
[0007] Preferably, the pre-tightening assembly includes a plurality of pressing plates, a plurality of guide columns, a plurality of threaded columns, a plurality of connecting pieces, and a plurality of universal balls, the plurality of guide columns are installed on the outer side wall of the outer ring, the plurality of pressing plates are respectively slidably installed on the plurality of guide columns, the plurality of threaded columns are rotatably installed on the outer side wall of the outer ring, the plurality of pressing plates are screw-mounted on the plurality of threaded columns, the plurality of connecting pieces are respectively installed at the ends of the plurality of threaded columns, and the plurality of universal balls are installed on the outer side wall of the pressing plate; after the first inner ring and the second inner ring are installed on the outer ring, the plurality of connecting pieces are adjusted in rotation, so that the plurality of connecting pieces drive the plurality of pressing plates to move positions through the plurality of threaded columns, thereby the plurality of pressing plates adjust the pre-tightening pressing force of the first inner ring and the second inner ring through the plurality of universal balls, and the first inner ring and the second inner ring are guided and supported by the plurality of universal balls after rotation, thereby improving the rotation fluency of the first inner ring and the second inner ring.
[0008] Preferably, the guide assembly includes two guide rails and a plurality of balls, the two guide rails are respectively arranged inside the first arc slot and the second arc slot, and the plurality of balls are rotatably installed between the two guide rails; the first inner ring and the second inner ring rotate through the guide support of the two guide rails and the plurality of balls, and when the pressing plate pre-tightens and adjusts the first inner ring and the second inner ring, the first inner ring and the second inner ring pre-tighten and adjust the two guide rails, thereby improving the working play adjustment flexibility between the two guide rails and the plurality of balls.
[0009] Preferably, the plurality of sets of pressure sensors are installed on the plurality of sets of pressing plates respectively, and the plurality of sets of pressure sensors are connected with the plurality of sets of universal balls; when the universal balls press the first inner ring and the second inner ring, the pressing force is measured by the pressure sensors, so that the accuracy of the pre-tightening force measurement and adjustment is improved.
[0010] Preferably, the plurality of sets of reinforcing members are installed on the outer side walls of the pressing plates; by arranging the plurality of sets of reinforcing members, the anti-deformation effect of the plurality of sets of pressing plates is improved, and the pre-tightening stability of the first inner ring and the second inner ring is improved.
[0011] Preferably, the plurality of sets of inner hexagonal grooves are arranged on the plurality of sets of connecting members respectively; by arranging the plurality of sets of inner hexagonal grooves, the convenience of rotating adjustment of the connecting members by personnel using tools is improved.
[0012] Preferably, the positioning groove is arranged on the outer side wall of the outer ring; by arranging the positioning groove, the convenience of the outer ring installation and fixation is improved.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the first inner ring and the second inner ring are oppositely installed on the outer ring through the guide assembly, and then the first inner ring and the second inner ring are oppositely pressed through the pre-tightening assembly, so that the working play between the first inner ring, the second inner ring and the guide assembly is adjusted, the vibration noise of the first inner ring and the second inner ring is reduced, the service life is prolonged, the rotation precision is improved, the pre-tightening fixation adjustment flexibility and convenience of the first inner ring and the second inner ring are improved, and the use effect is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is the axial measurement structure schematic diagram of the utility model;
[0015] Figure 2 is the axial measurement local structure schematic diagram of the outer ring and the positioning groove etc.
[0016] Figure 3 is the axial measurement local structure schematic diagram of the pressing plate and the guide column etc.
[0017] Figure 4 is the axial measurement local structure schematic diagram of the pressing plate and the universal ball etc.
[0018] Figure 5 is the axial measurement structure schematic diagram of the outer ring and the first inner ring etc.
[0019] Figure 6 is the axial measurement local structure schematic diagram of the guide rail and the ball etc.
[0020] The following are labels in the attached diagram: 1. Outer ring; 2. First inner ring; 3. Second inner ring; 4. First arc groove; 5. Second arc groove; 6. Pressing plate; 7. Guide post; 8. Stud; 9. Connector; 10. Universal ball; 11. Guide rail; 12. Ball bearing; 13. Pressure sensor; 14. Reinforcing member; 15. Socket hexagonal groove; 16. Positioning groove. Detailed Implementation
[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0022] Example 1
[0023] like Figures 1 to 6 As shown, the adjustable preload angular contact ball bearing of this utility model includes an outer ring 1, which is mounted on a bearing housing; it also includes a guide assembly, a preload assembly, a first inner ring 2, a second inner ring 3, a first arc groove 4, and a second arc groove 5. The first inner ring 2 and the second inner ring 3 are arranged opposite each other. The first arc groove 4 is disposed on the outer side wall of the first inner ring 2 and the second inner ring 3, and the second arc groove 5 is disposed on the outer side wall of the outer ring 1. The positions of the first arc groove 4 and the second arc groove 5 are opposite to each other. The guide assembly is disposed between the first arc groove 4 and the second arc groove 5. The guide assembly is used to guide and support the rotation of the first inner ring 2 and the second inner ring 3. The preload assembly is disposed on the outer side wall of the outer ring 1. The preload assembly is used to press and fix the first inner ring 2 and the second inner ring 3.
[0024] like Figure 3 As shown, the pre-tightening assembly includes multiple sets of pressing plates 6, multiple sets of guide posts 7, multiple sets of studs 8, multiple sets of connectors 9, and multiple sets of universal balls 10. The multiple sets of guide posts 7 are all installed on the outer side wall of the outer ring 1. The multiple sets of pressing plates 6 are slidably installed on the multiple sets of guide posts 7. The multiple sets of studs 8 are rotatably installed on the outer side wall of the outer ring 1. The multiple sets of pressing plates 6 are screwed onto the multiple sets of studs 8. The multiple sets of connectors 9 are respectively installed at the ends of the multiple sets of studs 8. The multiple sets of universal balls 10 are all installed on the outer side wall of the pressing plate 6.
[0025] In this embodiment, the first inner ring 2 and the second inner ring 3 are mounted on the outer ring 1 facing each other through a guide assembly. Then, the first inner ring 2 and the second inner ring 3 are pressed together facing each other by a pre-tightening assembly, thereby adjusting the working clearance between the first inner ring 2 and the second inner ring 3 and the guide assembly. This reduces the vibration and noise of the first inner ring 2 and the second inner ring 3, extends their service life, improves rotational accuracy, and improves the flexibility and convenience of the pre-tightening and fixing adjustment of the first inner ring 2 and the second inner ring 3, thus improving the performance.
[0026] Embodiment 2
[0027] On the basis of embodiment 1, as Figure 3 The pre-tightening force adjustable angular contact ball bearing of the utility model, the guide assembly includes two groups of guide rails 11 and a plurality of groups of balls 12, two groups of guide rails 11 are arranged inside first arc-shaped groove 4 and second arc-shaped groove 5 respectively, and a plurality of groups of balls 12 are all rollingly installed between two groups of guide rails 11.
[0028] As Figure 3 It also includes a plurality of groups of pressure sensors 13, a plurality of groups of pressure sensors 13 are installed on a plurality of groups of pressing plates 6 respectively, and a plurality of groups of pressure sensors 13 are connected with a plurality of groups of universal balls 10.
[0029] As Figure 3 It also includes a plurality of groups of reinforcing members 14, and a plurality of groups of reinforcing members 14 are all installed on the outer side wall of the pressing plate 6.
[0030] As Figure 3 It also includes a plurality of groups of internal hexagonal recesses 15, and a plurality of groups of internal hexagonal recesses 15 are arranged on a plurality of groups of connecting members 9 respectively.
[0031] As Figure 2 It also includes a positioning groove 16, and the positioning groove 16 is arranged on the outer side wall of the outer ring 1.
[0032] In the embodiment, after the first inner ring 2 and the second inner ring 3 are installed on the outer ring 1, a plurality of groups of connecting members 9 are rotated to adjust, so that a plurality of groups of connecting members 9 drive a plurality of groups of pressing plates 6 to move positions through a plurality of groups of studs 8, so that a plurality of groups of pressing plates 6 adjust the pre-tightening pressing force of the first inner ring 2 and the second inner ring 3 through a plurality of groups of universal balls 10, after the first inner ring 2 and the second inner ring 3 are rotated, the first inner ring 2 and the second inner ring 3 are guided and supported by a plurality of groups of universal balls 10, so that the rotation fluency of the first inner ring 2 and the second inner ring 3 is improved, the first inner ring 2 and the second inner ring 3 are rotated through the guidance and support of two groups of guide rails 11 and a plurality of groups of balls 12, when the pressing plate 6 pre-tightens and presses the first inner ring 2 and the second inner ring 3, the first inner ring 2 and the second inner ring 3 pre-tighten and press two groups of guide rails 11, so that the working clearance adjustment flexibility between two groups of guide rails 11 and a plurality of groups of balls 12 is improved.
[0033] The pre-tightening force adjustable angular contact ball bearing of the utility model, when working, the first inner ring 2 and the second inner ring 3 are installed on the outer ring 1 through the guide assembly, then the first inner ring 2 and the second inner ring 3 are respectively pressed tightly through the pre-tightening assembly, so that the working clearance between the first inner ring 2 and the second inner ring 3 and the guide assembly is adjusted.
[0034] The pressure sensor 13 of the pre-tightening force adjustable type angular contact ball bearing is purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, and no creative labor of the technical personnel in the field is needed.
[0035] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.
Claims
1. A pre-tightening adjustable angular contact ball bearing comprising an outer ring (1) mounted on a bearing seat; characterized in that, The application also comprises a guide assembly, a pre-tightening assembly, a first inner ring (2), a second inner ring (3), a first arc-shaped groove (4) and a second arc-shaped groove (5), the first inner ring (2) is oppositely arranged with the second inner ring (3), the first arc-shaped groove (4) is arranged on the outer side wall of the first inner ring (2) and the second inner ring (3), the second arc-shaped groove (5) is arranged on the outer side wall of the outer ring (1), the first arc-shaped groove (4) and the second arc-shaped groove (5) are oppositely arranged, the guide assembly is arranged between the first arc-shaped groove (4) and the second arc-shaped groove (5), the guide assembly is used for guiding and supporting the rotation of the first inner ring (2) and the second inner ring (3), and the pre-tightening assembly is arranged on the outer side wall of the outer ring (1) and is used for tightly fixing the first inner ring (2) and the second inner ring (3).
2. The preload-adjustable angular contact ball bearing according to claim 1, wherein The pre-tightening assembly comprises a plurality of pressing plates (6), a plurality of guide columns (7), a plurality of threaded studs (8), a plurality of connecting pieces (9) and a plurality of universal balls (10), the plurality of guide columns (7) are all installed on the outer side wall of the outer ring (1), the plurality of pressing plates (6) are all slidingly installed on the plurality of guide columns (7), the plurality of threaded studs (8) are all rotationally installed on the outer side wall of the outer ring (1), the plurality of pressing plates (6) are all screw-connected with the plurality of threaded studs (8), the plurality of connecting pieces (9) are all installed at the ends of the plurality of threaded studs (8), and the plurality of universal balls (10) are all installed on the outer side wall of the pressing plate (6).
3. The preload-adjustable angular contact ball bearing according to claim 1, wherein The guide assembly comprises two guide rails (11) and a plurality of rolling balls (12), the two guide rails (11) are arranged inside the first arc-shaped groove (4) and the second arc-shaped groove (5) respectively, and the plurality of rolling balls (12) are all rollingly installed between the two guide rails (11).
4. The preload adjustable angular contact ball bearing of claim 2, wherein, A plurality of pressure sensors (13) are also arranged, the plurality of pressure sensors (13) are all installed on the plurality of pressing plates (6), and the plurality of pressure sensors (13) are connected with the plurality of universal balls (10).
5. The preload adjustable angular contact ball bearing of claim 2, wherein, A plurality of reinforcing pieces (14) are also arranged, the plurality of reinforcing pieces (14) are all installed on the outer side wall of the pressing plate (6).
6. The preload adjustable angular contact ball bearing of claim 2, wherein, A plurality of inner hexagonal recesses (15) are also arranged, the plurality of inner hexagonal recesses (15) are all arranged on the plurality of connecting pieces (9).
7. The preload adjustable angular contact ball bearing of claim 1, wherein, A positioning groove (16) is also arranged, and the positioning groove (16) is arranged on the outer side wall of the outer ring (1).