CN114483805B - Assembling device and assembling method for tapered roller bearing - Google Patents
Assembling device and assembling method for tapered roller bearing Download PDFInfo
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- CN114483805B CN114483805B CN202111638653.9A CN202111638653A CN114483805B CN 114483805 B CN114483805 B CN 114483805B CN 202111638653 A CN202111638653 A CN 202111638653A CN 114483805 B CN114483805 B CN 114483805B
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- tapered roller
- roller bearing
- cage
- power mechanism
- small end
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 100
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000009434 installation Methods 0.000 abstract description 10
- 238000003466 welding Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 238000013021 overheating Methods 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
-
- 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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
- F16C43/06—Placing rolling bodies in cages or bearings
- F16C43/065—Placing rolling bodies in cages or bearings in cages
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Provided are an assembly device and an assembly method for a tapered roller bearing. The tapered roller bearing includes a cage to be assembled placed on an assembling device including: support frame and the expansion mechanism of setting on the support frame, wherein, expansion mechanism includes: the force application mechanism is arranged on the support frame and comprises an abutting part, and the abutting part is configured to be capable of moving relative to the support frame and abuts against the small end part of the retainer; and a power mechanism configured to drive movement of the abutment portion in a radial direction of the cage to apply a radially outward force to the small end portion. According to the technical scheme of the disclosure, the deformation of the small end part of the retainer can be utilized to ensure the interference installation of the retainer, the tapered roller and the inner ring, so that the technical difficulty is reduced, the assembly quality and the assembly efficiency are improved, and the potential safety hazard is eliminated.
Description
Technical Field
The invention relates to the technical field of bearing assembly, in particular to an assembly device and an assembly method for a tapered roller bearing.
Background
Tapered roller bearings are generally split, i.e., the bearing inner assembly consisting of tapered rollers, cage and inner race can be mounted separately from the outer race.
At present, when a retainer of a tapered roller bearing is assembled with a roller and an inner ring, a welding mode and a heating mode are mainly adopted. If a welding mode is adopted, the retainer is required to be cut along the axial direction, a welding groove is processed, and when the welding groove is installed, the retainer, the roller and the inner ring are placed on a special tool, the fixture is clamped, enough locking quantity is ensured, and welding forming is performed. The welding mode has the following disadvantages or shortcomings: the retainer is welded and formed, the technical requirement on welding engineering is extremely high, the training time is long, hidden dangers exist in the quality of welding seams, and the problems of overheating and pollution are easy to cause in the welding process. If a heating mode is adopted, the retainer is required to be placed on a special tool, the retainer is heated to more than 150 ℃, the rollers and the inner ring are rapidly installed, and subsequent operation is performed after the retainer is cooled. There are also some disadvantages or shortcomings with the heating mode: the retainer is installed in a heating mode, the working efficiency is low, and the roller tempering risk is caused by over-temperature in the working process.
Disclosure of Invention
In order to solve at least one of the technical problems, the invention provides an assembly device and an assembly method of a tapered roller bearing, which can effectively solve the problems of welding defects, bearing pollution, roller tempering caused by overheating and the like, and provides an efficient, safe and reliable bearing installation scheme.
According to an aspect of the present invention, there is provided an assembling apparatus for a tapered roller bearing including a cage to be assembled placed on the assembling apparatus, the assembling apparatus comprising: support frame and the expansion mechanism of setting on the support frame, wherein, expansion mechanism includes: the force application mechanism is arranged on the support frame and comprises an abutting part, and the abutting part is configured to be capable of moving relative to the support frame and abuts against the small end part of the retainer; and a power mechanism configured to drive movement of the abutment portion in a radial direction of the cage to apply a radially outward force to the small end portion. The assembly device can ensure that the retainer, the roller and the inner ring are in interference fit installation by controlling the deformation of the small end part of the retainer.
According to an exemplary embodiment of the present invention, the power mechanism may include an actuator and a transmission portion connected between the abutment portion and the actuator, configured to receive a driving force from the actuator and transmit the driving force to the abutment portion.
According to an exemplary embodiment of the present invention, the driving part may be a screw, the abutting part may be a slider screw-engaged with the screw, and the slider may have a supporting part supporting the holder; or the transmission part can be a telescopic unit, and the abutting part can be a clamping block connected to the end part of the telescopic unit; or the transmission part can be a chain, and the abutting part can be a clamping block connected with the chain.
According to an exemplary embodiment of the present invention, the support frame may include a guide rail extending in a radial direction of the holder, and the transmission portion is provided on the guide rail such that the abutment portion can move along the guide rail.
According to an exemplary embodiment of the present invention, the actuator may include a servo motor and a decelerator, the transmission part being connected with the decelerator; or the actuator comprises a hand wheel, and the transmission part is connected with the hand wheel.
According to an exemplary embodiment of the present invention, the fitting device may include a plurality of expansion mechanisms uniformly distributed in the circumferential direction of the cage.
According to an exemplary embodiment of the present invention, a pair of expansion mechanisms opposing each other in the same radial direction may include a first power mechanism and a second power mechanism, respectively, wherein the first power mechanism and the second power mechanism are both automatic power mechanisms; or the first power mechanism is an automatic power mechanism, and the second power mechanism is a manual power mechanism, wherein the first power mechanisms are adjacent to each other and the second power mechanisms are adjacent to each other in the circumferential direction of the retainer.
According to an exemplary embodiment of the present invention, the number of the expansion mechanisms may be 2N, N being a natural number of 2 or more.
According to an exemplary embodiment of the present invention, in a state in which the cage is placed on the fitting device for the tapered roller bearing, the abutment portion may correspond to a position of a hole beam of the cage, wherein the hole beam is located between adjacent pockets of the cage.
According to an exemplary embodiment of the present invention, the small end portion may have an extension tip extending inward in the radial direction, the abutment portion may include an abutment portion that abuts at the extension tip, and the abutment portion is substantially equal in height to the extension tip in the axial direction of the holder.
According to an exemplary embodiment of the present invention, the support frame may further include a leg for supporting the force applying mechanism and the power mechanism.
According to another aspect of the present invention, there is provided an assembling method for a tapered roller bearing, which is performed using the assembling apparatus for a tapered roller bearing as described above, the tapered roller bearing including a tapered roller to be assembled, an inner ring to be assembled, and a cage to be assembled, the assembling method for a tapered roller bearing including: placing tapered rollers into pockets of the retainer; applying a predetermined pulling force in a radial direction to the retainer to expand the small end portion to a predetermined expanded state; the inner ring is placed inside the cage.
According to an exemplary embodiment of the present invention, in the predetermined expanded state, the inner diameter of the small end portion may satisfy the following conditional expression: r is equal to or greater than r 0 +w, wherein r represents the inner radius of the small end part in a preset expansion state, r 0 represents the inner radius of the small end part in an initial state, and w represents the width of the small flange of the inner ring in the radial direction.
According to an exemplary embodiment of the present invention, the assembly method for a tapered roller bearing may further include: before the tapered rollers are placed in the pockets of the retainer, a preliminary pulling force in the radial direction is applied to the retainer to bring the retainer into a preliminary tension state.
According to an exemplary embodiment of the invention, in the initially tensioned state, the centre of the holder is positioned substantially in the centre of the fitting device.
According to an exemplary embodiment of the present invention, the assembly method for a tapered roller bearing may further include: after the inner ring is placed inside the cage, a predetermined pulling force is released.
By adopting the technical scheme of the invention, the assembly device and the assembly process of the traditional retainer, the rollers and the inner ring of the tapered roller bearing are changed. The retainer, the roller and the inner ring are installed in an interference fit manner by controlling the deformation of the small end part of the retainer. The problems of hidden danger of weld quality, easiness in overheating and bearing pollution in welding forming are solved; the working efficiency is improved, and meanwhile, the possibility of roller tempering caused by over-temperature due to heating installation is avoided; the cage can be designed in a conventional manner, reducing the technical difficulty and reducing or avoiding the risk of the roller and the raceway generating indentations.
Drawings
The above and other features and advantages of this invention will become more apparent from the following detailed description of exemplary embodiments of the invention, taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic side view of an assembly device for a tapered roller bearing according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic top view of an assembly device for a tapered roller bearing in accordance with an exemplary embodiment of the present invention;
FIG. 3 is a flowchart of an assembly method for a tapered roller bearing according to an exemplary embodiment of the present invention;
Fig. 4 is a flowchart of an assembling method for a tapered roller bearing according to still another exemplary embodiment of the invention.
Reference numerals illustrate:
1: a support frame; 2: an expansion mechanism; 10: a force application mechanism; 11: an abutting portion; 12: a transmission part; 20: a power mechanism; 21: a first power mechanism; 22: a second power mechanism; 23: a speed reducer; 30: a guide rail; 40: a retainer; 41: a small end; 50: a support leg; 51: a first leg; 52: a second leg; 53: and a third leg.
Detailed Description
Embodiments of the present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
The fitting device and the fitting method for a tapered roller bearing, which will be described below, may be applied to the fitting of a single-row tapered roller bearing, but the exemplary embodiments of the invention are not limited thereto, and the fitting device and the fitting method for a tapered roller bearing according to the invention may also be applied to the fitting of a multi-row tapered roller bearing, or may also be applied to the elastic deformation or shaping of a member having a circular ring portion such as a cage or the like.
According to an exemplary embodiment of the present invention, there is provided an assembling apparatus for a tapered roller bearing. An assembling apparatus for a tapered roller bearing according to an exemplary embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the tapered roller bearing may include a cage 40 to be assembled placed on an assembling device, and the assembling device for the tapered roller bearing according to an exemplary embodiment of the present invention may include: a support frame 1 and an expansion mechanism 2 arranged on the support frame 1. Wherein the expansion mechanism 2 may comprise: the force application mechanism 10 is provided on the support frame 1, and the force application mechanism 10 may include an abutment portion 11, the abutment portion 11 being configured to be movable with respect to the support frame 1, and to abut against the small end portion 41 of the holder 40; the power mechanism 20 is configured to drive movement of the abutment 11 in the radial direction of the cage 40 to apply a radially outward force to the small end 41, such that the radial dimension of the cage 40 expands outwardly to facilitate installation of the bearing inner race.
In order to achieve the deformation of the small end portion 41 of the cage 40, the fitting device for a tapered roller bearing according to an exemplary embodiment of the present invention may include a plurality of expansion mechanisms 2, the plurality of expansion mechanisms 2 being uniformly distributed in the circumferential direction of the cage 40. According to an exemplary embodiment of the present invention, the number of the expansion mechanisms may be 2N, N being a natural number of 2 or more. In fig. 1 and 2, the number of the expansion mechanisms is shown as eight, i.e., n=4, however, the number of the expansion mechanisms 2 is not limited thereto as long as the small end portions 41 of the holder 40 can be spread apart to be uniformly deformed. Preferably, the number of the expansion mechanisms 2 is set to 8 or more, so that the fitting device for the tapered roller bearing can hold the roundness while expanding the small end portion 41 of the retainer 40 to deform it.
In order to enable the retainer 40 to be uniformly deformed to maintain roundness, the expansion mechanisms 2 are preferably arranged in pairs and a pair of the expansion mechanisms 2 are disposed along the same diameter, with expansion forces applied in opposite directions.
As shown in fig. 2, a pair of expansion mechanisms 2 opposing each other on the same diameter may include a first power mechanism 21 and a second power mechanism 22, wherein the first power mechanism 21 and the second power mechanism 22 may each be an automatic power mechanism; alternatively, the first power mechanism 21 may be an automatic power mechanism, and the second power mechanism 22 may be a manual power mechanism, wherein the first power mechanisms 21 are adjacent to each other and the second power mechanisms 22 are adjacent to each other in the circumferential direction of the holder 40. Examples of the automatic power mechanism are a pneumatic cylinder or a hydraulic cylinder, a servo motor, a hydraulic motor, a pneumatic motor, etc., and examples of the manual power mechanism are a hand wheel, etc.
According to an exemplary embodiment of the present invention, in the case where the power mechanism 20 is a pneumatic cylinder or a hydraulic cylinder, the abutment 11 may be a clip connected to an end of a piston rod or a cylinder body of the pneumatic cylinder or the hydraulic cylinder.
According to an exemplary embodiment of the present invention, the first power mechanism 21 and/or the second power mechanism 22 in the power mechanism 20 may also be provided to include an actuator and a transmission portion 12, the transmission portion 12 being connected between the abutment portion 11 and the actuator, configured to receive a driving force from the actuator and transmit the driving force to the abutment portion 11. The actuator may comprise a servo motor and a decelerator 23, and the transmission part 12 is connected to the decelerator 23. Here, the use of the servo motor has an advantage in that the rotation speed and torque can be precisely controlled, thereby achieving the purpose of controlling the deformation amount of the small end portion 41 of the holder 40. The servo motor may be connected to the decelerator 23 by bolts, and torque is transmitted through a flat key.
According to other exemplary embodiments of the present invention, the actuator may include a hand wheel with which the transmission 12 is connected for cost reduction.
In the exemplary embodiment shown in fig. 1 and 2, in two expansion mechanisms 2 on the same diameter, the first power mechanism 21 may be provided as an automatic power mechanism, which may be provided as a servo motor, for example; the second power mechanism 22 is a manual power mechanism, such as a hand wheel. By doing so, not only the deformation of the small end portion 41 of the holder 40 can be achieved, but also the cost can be reduced.
In order to avoid a situation in which the abutment 11 interferes with the installation of the tapered roller during abutment against the small end portion of the cage 40 to deform it, in a state in which the cage 40 is placed on the fitting device for the tapered roller bearing, the abutment 11 corresponds to the position of the hole beam of the cage 40, which is located between the adjacent pockets of the cage 40. Further, as shown in fig. 1 and 2, the small end portion 41 may have an extension tip extending inward in the radial direction of the cage 40, the abutment portion 11 includes an abutment portion that abuts against the extension tip, and the abutment portion is substantially equal in height to the extension tip in the axial direction of the cage 40, thereby further avoiding the abutment portion 11 from interfering with the installation of the tapered roller.
The transmission part 12 may be a screw rod, and the abutting part 11 may be a slider in threaded fit connection with the screw rod. The screw rod and a hand wheel serving as an actuator can be connected through a flat key. In order to be able to support the holder 40, the slider may have a support portion that supports the holder 40. As shown in fig. 1, the end of the abutting portion 11 facing the retainer 40 may be formed with an abutting portion and a supporting portion, the abutting portion protruding from the supporting portion, and the abutting portion and the supporting portion being substantially in a "convex" shape or an L-shape. The main function of the power mechanism 20 is to provide power output, reduce the rotation of the servo motor via the speed reducer 23, and then turn into the rotation of the screw rod, and at the same time, convert the torque of the servo motor into the axial tension of the screw rod.
The embodiment of the transmission part 12 is not limited thereto, and according to other exemplary embodiments of the present invention, the transmission part 12 may be a telescopic unit, and the abutment part 11 may be a latch connected to an end of the telescopic unit. For example, the transmission portion 12 may be formed as an electric push rod or a hydraulic push rod. According to other exemplary embodiments of the present invention, the transmission portion 12 may be a chain, and the abutment portion 11 may be a clip connected to the chain.
To facilitate the setting of the transmission part 12 and/or to guide the movement of the transmission part 12, the support frame 1 may comprise a guide rail 30, the guide rail 30 extending in the radial direction of the holder 40, and the transmission part 12 being arranged on the guide rail 30 such that the abutment part 11 is movable along the guide rail 30. The screw rod is connected with the guide rail through the supporting plates at the two ends.
The support stand 1 may further comprise a leg 50, the leg 50 being adapted to support the force applying mechanism 10 and the power mechanism 20. The legs 50 can be provided as height-adjustable legs that can be adjusted to an ergonomic height for ease of operation by the constructor. Referring to fig. 1 and 2, the leg 50 may include a first leg 51, a second leg 52, and a third leg 53, wherein the first leg 51 may be used to support the first power mechanism 21, the second leg 52 may be used to support the second power mechanism, and the third leg 53 may be located between the first leg 51 and the second leg 52 to cooperatively support the force applying mechanism 10. The first leg 51, the second leg 52, and the third leg 53 may be fixed to the urging mechanism 10 and the power mechanism 20, for example, may be detachably connected to the urging mechanism 10 and the power mechanism 20 by fasteners such as bolts or the like, so that the assembly device is convenient for storage, transportation, installation, and the like.
The ends of the first, second and third legs 51, 52 and 53 may be formed with support stands to increase a support area and stability. Although the first, second and third legs 51, 52 and 53 are illustrated as separate components from each other in fig. 1 and 2, exemplary embodiments of the present invention are not limited thereto, and the first, second and third legs 51, 52 and 53 may be formed as one body.
An assembling method for a tapered roller bearing according to an exemplary embodiment of the present invention, which includes a tapered roller to be assembled, an inner ring to be assembled, and a cage 40 to be assembled, will be described below with reference to fig. 3, and includes: placing tapered rollers into pockets of the cage 40 (step S200); applying a predetermined pulling force in the radial direction to the holder 40 to expand the small end portion 41 of the holder 40 to a predetermined expanded state (step S300); the inner race is placed inside the cage 40 (step S400).
The assembly method of the tapered roller bearing may be performed using the assembly device for a tapered roller bearing as described above.
In the predetermined expanded state, the inner diameter of the small end portion 41 of the retainer 40 satisfies the following conditional expression: r is equal to or greater than r 0 +w, wherein r represents the inner radius of the small end 41 in a predetermined expanded state, r 0 represents the inner radius of the small end 41 in an initial state, and w represents the width of the small flange of the inner ring in the radial direction, and when the above conditional expression is satisfied, the radial clearance between the small flange of the inner ring and the tapered roller can be ensured during installation. Here, the small flange of the inner ring is a flange corresponding to the small end 41 of the holder 40.
According to the exemplary embodiment of the present invention, the abutment 11 can be conveniently and flexibly adjusted to different radial positions, and can be applied to holders 40 having different inner diameter sizes, with high versatility. Thus, the assembly device and the assembly method for the tapered roller bearing according to the exemplary embodiments of the present invention can be simultaneously applied to different types of retainers, and have a wide range of applications.
The assembly method for the tapered roller bearing may further include: before placing the tapered rollers into the pockets of the cage 40, a preliminary pulling force in the radial direction is applied to the cage 40 to bring the cage 40 into a preliminary tension state (step S100).
In the initial tension state, the center of the retainer 40 is positioned substantially at the center of the fitting device. For example, the hand wheel, lead screw and slide block may help to center the cage 40 in the center of the assembly device and may provide self-locking to ensure that the servo motor is not eccentric when loaded, and the small end 41 of the cage 40 may deform uniformly.
The assembly method for the tapered roller bearing may further include: after the inner ring is placed inside the cage 40, the predetermined tension is released (step S500).
An apparatus method of performing the tapered roller bearing will be described below using the assembly apparatus as shown in fig. 1 and 2 as an example. The inner radius r 0 of the small end 41 in the initial state can be determined first, the distance L between the outer side surface of the slide block and the center of the assembling device is calculated according to the inner radius, and the slide block is adjusted by using four hand wheels as actuators so that the distance between the slide block and the center of the assembling device is smaller than L; secondly, the remaining four sliders are respectively adjusted by four servo motors, and the distance between the four servo motors and the center of the assembly device is smaller than L, and then the retainer 40 to be assembled is placed on the sliders, and the four hand wheels are respectively rotated, so that the retainer 40 is in a preliminary tensioning state, and the center of the retainer 40 is positioned substantially at the center of the assembly device. Next, the tapered rollers are placed in the pocket positions of the cage 40, and a pre-calculated predetermined pulling force in the radial direction is applied to the screw rod by the servo motor and the decelerator, which is required to ensure that the cage 40 has sufficient elastic deformation. Finally, the inner ring with the assembly is lifted and installed in place, the servo motor rotates reversely to release the preset pressure, so that the retainer is restored to the state before being stressed, and the retainer 40, the tapered rollers and the inner ring are installed.
The predetermined pulling force F in the radial direction to be applied to the cage 40 can be calculated by the following formula.
Where Δr represents the deformation amount of the small end portion 41, r 0 represents the inner radius of the small end portion 41 in the initial state, E represents the material elastic modulus of the retainer 40, and S represents the cross-sectional area of the retainer 40.
By adopting the technical scheme of the invention, the installation process of the traditional retainer of the tapered roller bearing, the rollers and the inner ring is changed. The retainer, the roller and the inner ring are installed in an interference fit manner by controlling the deformation of the small end part of the retainer. The problems of hidden danger of weld quality, easiness in overheating and bearing pollution in welding forming are solved; the working efficiency is improved, and meanwhile, the possibility of roller tempering caused by over-temperature due to heating installation is avoided; the cage can be designed in a conventional manner, reducing the technical difficulty and reducing or avoiding the risk of the roller and the raceway generating indentations.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (16)
1. Assembly device for a tapered roller bearing comprising a cage (40), characterized in that it comprises: support frame (1) and set up expansion mechanism (2) on support frame (1), be equipped with holder (40) can set up on support frame (1), wherein, expansion mechanism (2) include:
A biasing mechanism (10) provided on the support frame (1), the biasing mechanism (10) including an abutting portion (11), the abutting portion (11) being configured to be movable with respect to the support frame (1) and abutting against a small end portion (41) of the holder (40);
A power mechanism (20) configured to drive movement of the abutment portion (11) in a radial direction of the cage (40) to apply a radially outward force to the small end portion (41) so that the small end portion (41) can expand to a predetermined expanded state and receive an inner ring of the tapered roller bearing into an interior of the cage (40),
Wherein the assembling device comprises a plurality of the expansion mechanisms (2), and the expansion mechanisms (2) are distributed at intervals in the circumferential direction of the retainer (40) and are used for expanding the radial dimension of the retainer (40) outwards through the abutting part (11).
2. The fitting device for a tapered roller bearing according to claim 1, characterized in that the power mechanism (20) includes an actuator and a transmission portion (12), the transmission portion (12) being connected between the abutment portion (11) and the actuator, configured to receive a driving force from the actuator and transmit to the abutment portion (11).
3. The assembling apparatus for tapered roller bearings according to claim 2, characterized in that,
The transmission part (12) is a screw rod, the abutting part (11) is a sliding block in threaded fit with the screw rod, and the sliding block is provided with a supporting part for supporting the retainer (40); or alternatively
The transmission part (12) is a telescopic unit, and the abutting part (11) is a clamping block connected to the end part of the telescopic unit; or alternatively
The transmission part (12) is a chain, and the abutting part (11) is a clamping block connected with the chain.
4. A fitting device for a tapered roller bearing according to claim 3, characterized in that the support frame (1) comprises a guide rail (30), the guide rail (30) extending in the radial direction of the cage (40), and the transmission part (12) being provided on the guide rail (30) such that the abutment part (11) is movable along the guide rail (30).
5. The assembly device of a tapered roller bearing according to claim 4, characterized in that the actuator comprises a servo motor and a decelerator (23), the transmission part (12) being connected with the decelerator (23); or the actuator comprises a hand wheel, and the transmission part (12) is connected with the hand wheel.
6. The assembly device of a tapered roller bearing according to claim 1, wherein the power mechanism (20) includes a pneumatic cylinder or a hydraulic cylinder, and the abutment portion (11) is a block connected to an end of a piston rod or a cylinder body of the pneumatic cylinder or the hydraulic cylinder.
7. The fitting device for a tapered roller bearing according to claim 1, wherein a pair of the expansion mechanisms (2) opposing each other in the same radial direction includes a first power mechanism (21) and a second power mechanism (22), respectively, wherein,
The first power mechanism (21) and the second power mechanism (22) are automatic power mechanisms; or alternatively
The first power mechanism (21) is an automatic power mechanism, and the second power mechanism (22) is a manual power mechanism, wherein the first power mechanisms (21) are adjacent to each other and the second power mechanisms (22) are adjacent to each other in the circumferential direction of the retainer (40).
8. The fitting device for a tapered roller bearing according to claim 7, wherein the number of the expansion mechanisms (2) is 2N, N being a natural number of 2 or more.
9. Assembly device for a tapered roller bearing according to claim 1, characterized in that the abutment (11) corresponds to the position of a hole beam of the cage (40) in a state in which the cage (40) is placed on the assembly device for a tapered roller bearing, wherein the hole beam is located between adjacent pockets of the cage (40).
10. Assembly device for a tapered roller bearing according to claim 1, characterized in that the small end portion (41) has an extension tip extending inwardly in the radial direction, the abutment portion (11) comprises an abutment portion abutting at the extension tip, and the abutment portion is substantially equal in height to the extension tip in the axial direction of the cage (40).
11. Assembly device for tapered roller bearings according to claim 1, characterized in that the support frame (1) further comprises a leg (50), which leg (50) is used for supporting the force application mechanism (10) and the power mechanism (20).
12. Assembly method for a tapered roller bearing, characterized in that the assembly method for a tapered roller bearing comprising a tapered roller to be assembled, an inner ring to be assembled and the cage (40) to be assembled is performed with the assembly device for a tapered roller bearing as claimed in any one of claims 1 to 11, the assembly method for a tapered roller bearing comprising:
Placing the tapered rollers into pockets of the cage (40);
-applying a predetermined pulling force in a radial direction to the cage (40) to expand the small end portion (41) to a predetermined expanded state;
the inner ring is placed inside the cage (40).
13. The fitting method for a tapered roller bearing according to claim 12, characterized in that, in the predetermined expanded state, the inner diameter of the small end portion (41) satisfies the following conditional expression:
r≥r0+w，
Wherein r represents an inner radius of the small end portion (41) in the predetermined expanded state, r 0 represents an inner radius of the small end portion (41) in an initial state, and w represents a width of the small flange of the inner ring in the radial direction.
14. The assembling method for a tapered roller bearing according to claim 12, characterized in that the assembling method for a tapered roller bearing further comprises:
Before placing the tapered rollers into the pockets of the cage (40), a preliminary pulling force in the radial direction is applied to the cage (40) to bring the cage (40) into a preliminary tension state.
15. The fitting method for a tapered roller bearing as claimed in claim 14, characterized in that in the preliminary tensioning state, the center of the cage (40) is positioned substantially at the center of the fitting device.
16. The assembling method for a tapered roller bearing according to any one of claims 12 to 15, characterized in that the assembling method for a tapered roller bearing further comprises:
the predetermined pulling force is released after the inner ring is placed inside the cage (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638653.9A CN114483805B (en) | 2021-12-29 | 2021-12-29 | Assembling device and assembling method for tapered roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638653.9A CN114483805B (en) | 2021-12-29 | 2021-12-29 | Assembling device and assembling method for tapered roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483805A CN114483805A (en) | 2022-05-13 |
| CN114483805B true CN114483805B (en) | 2024-06-14 |
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| CN202111638653.9A Active CN114483805B (en) | 2021-12-29 | 2021-12-29 | Assembling device and assembling method for tapered roller bearing |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266063A (en) * | 1999-03-17 | 2000-09-26 | Nsk Ltd | Conical roller bearing |
| JP2005256990A (en) * | 2004-03-12 | 2005-09-22 | Nsk Ltd | Roller incorporating tool, roller incorporating method and roller bearing |
| CN105517752A (en) * | 2013-09-09 | 2016-04-20 | 日本精工株式会社 | Tapered roller bearing assembling device and tapered roller bearing assembling method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147365A (en) * | 2003-11-19 | 2005-06-09 | Nakanishi Metal Works Co Ltd | Retainer for conical roller bearing and assembling method of conical roller bearing |
| JP4811056B2 (en) * | 2006-03-01 | 2011-11-09 | 日本精工株式会社 | Method for manufacturing roller bearing and tapered roller bearing |
| JP2016191451A (en) * | 2015-03-31 | 2016-11-10 | 株式会社ジェイテクト | Assembling method for tapered roller bearing |
| CN105020266A (en) * | 2015-06-15 | 2015-11-04 | 洛阳轴研科技股份有限公司 | High-load conical roller bearing |
| JP6716958B2 (en) * | 2016-03-01 | 2020-07-01 | 株式会社ジェイテクト | Method for manufacturing tapered roller bearing and jig for manufacturing tapered roller bearing |
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- 2021-12-29 CN CN202111638653.9A patent/CN114483805B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266063A (en) * | 1999-03-17 | 2000-09-26 | Nsk Ltd | Conical roller bearing |
| JP2005256990A (en) * | 2004-03-12 | 2005-09-22 | Nsk Ltd | Roller incorporating tool, roller incorporating method and roller bearing |
| CN105517752A (en) * | 2013-09-09 | 2016-04-20 | 日本精工株式会社 | Tapered roller bearing assembling device and tapered roller bearing assembling method |
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| CN114483805A (en) | 2022-05-13 |
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