Bearing press fitting tool of automobile hub assembly

Abstract

The utility model provides a bearing press fitting tool of an automobile hub assembly. The bearing press fitting tool comprises a base (10), a first pressing head (20), an elastic piece (30) and a second pressing head (40). The base is provided with a bottom surface (11). The first pressing head is movably arranged on the base, a first circular truncated cone (22) and a first press-fitting face (21) are formed at one end of the first pressing head, the first circular truncated cone can be sleeved with the outer ring of the first tapered roller bearing, and the end face of the first tapered roller bearing abuts against the first press-fitting face. The elastic piece can provide elastic force enabling the first pressing head to move away from the bottom face. The second pressing head is movably arranged on the base, a second circular truncated cone (42) and a second press-fitting face (41) are formed at one end of the second pressing head, the second circular truncated cone can be sleeved with the outer ring of the second tapered roller bearing, and the end face of the second tapered roller bearing abuts against the second press-fitting face. The bearing press-fitting tool can press the outer rings of the two bearings into the bearings at the same time, time and labor are saved, the mounting precision is improved, and damage to parts is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a bearing press-fitting tool for an automobile wheel hub assembly. Background Art

[0002] At present, when small commercial vehicles use rear dual tires, the rear axle structure used is generally a full-floating half-axle structure. The support structure of the wheel hub assembly in the full-floating half-axle structure generally uses two tapered roller bearings installed back to back, and the bearings need to be lubricated, so an oil seal is also required for sealing, that is, the wheel hub assembly contains two bearings and an oil seal. During the assembly of the wheel hub assembly, the wheel hub needs to be turned over on the press several times, and the outer rings of the two bearings and the oil seals are pressed into the bearings from top to bottom in turn. This method is not only time-consuming and labor-intensive, but also easy to cause damage to parts. Utility Model Content

[0003] The utility model aims to provide a bearing press-fitting tool for an automobile wheel hub assembly, which can press the outer rings of two bearings into the bearings at the same time, thus saving time and effort, improving the installation accuracy and avoiding damage to components.

[0004] The utility model provides a bearing press fitting for an automobile wheel hub assembly, which is used to press the outer ring of a first tapered roller bearing and the outer ring of a second tapered roller bearing into the wheel hub. The bearing press fitting comprises a base, a first pressing head, an elastic member and a second pressing head. The base has a bottom surface. The first pressing head is movably arranged on the base along a vertical direction, the vertical direction is perpendicular to the bottom surface, and a first truncated cone with an axis parallel to the vertical direction is formed at one end of the first pressing head away from the bottom surface in the vertical direction. The first pressing head also extends at the bottom of the first truncated cone to form a first pressing surface in an annular shape perpendicular to the vertical direction. The outer ring of the first tapered roller bearing can be sleeved on the first truncated cone and the end face abuts against the first pressing surface. The elastic member can apply force to the base and the first pressing head respectively, and provide an elastic force to make the first pressing head move away from the bottom surface. The second pressing head can be movably arranged on the base in the vertical direction, and the second pressing head can also be detached from the base. A second truncated cone with an axis parallel to the vertical direction is formed at one end of the second pressing head close to the bottom surface in the vertical direction. The second pressing head also extends at the bottom of the second truncated cone to form a second annular pressing surface perpendicular to the vertical direction. The outer ring of the second tapered roller bearing can be sleeved on the second truncated cone and the end face abuts against the second pressing surface. The base, the first pressing head and the second pressing head can cooperate with the press to press the outer ring of the first tapered roller bearing and the outer ring of the second tapered roller bearing into the wheel hub at the same time.

[0005] The bearing press-fitting tool for the automobile wheel hub assembly provided by the utility model can use the first pressing head and the second pressing head to press the outer ring of the first tapered roller bearing and the outer ring of the second tapered roller bearing into the wheel hub at the same time, without turning over the bearing, and the process is time-saving and labor-saving. The first pressing head and the second pressing head respectively have a first truncated cone and a second truncated cone, and provide elastic force in the press-fitting process with the help of the base and the elastic member, so that the outer ring of the first tapered roller bearing and the outer ring of the second tapered roller bearing can be automatically aligned, thereby improving the installation accuracy and avoiding manual straightening, and avoiding damage to parts.

[0006] In another schematic embodiment of the bearing pressing tool of the automobile wheel hub assembly, the base has a guide column extending perpendicular to the bottom surface, a first through hole corresponding to the shape of the guide column is formed on the first pressing head, the first pressing head can be slidably mounted on the guide column through the first through hole, a second through hole corresponding to the shape of the guide column is formed on the second pressing head, the second pressing head can be slidably mounted on the guide column through the second through hole, and the second pressing head can slide out from one end of the guide column.

[0007] In another schematic embodiment of the bearing pressing tool of the automobile wheel hub assembly, the base has a cylindrical abutment portion, which is sleeved on the guide column. The first pressure head can abut against one axial end of the abutment portion, and the elastic member is a spring sleeved on the guide column in the abutment portion.

[0008] In another exemplary embodiment of the bearing press fitting of the automobile wheel hub assembly, the diameter of the bottom of the first cone is equal to the large inner diameter of the outer ring of the first tapered roller bearing, and the taper of the first cone is greater than the taper of the raceway of the outer ring of the first tapered roller bearing.

[0009] In another exemplary embodiment of the bearing press fitting of the automobile wheel hub assembly, the diameter of the bottom of the second cone is equal to the large inner diameter of the outer ring of the second tapered roller bearing, and the taper of the second cone is greater than the taper of the raceway of the outer ring of the second tapered roller bearing.

[0010] In another schematic embodiment of a bearing pressing tool for an automobile wheel hub assembly, the bearing pressing tool also includes a third pressing head, which can be movably arranged on the base in the vertical direction, and the third pressing head can also be detached from the base. A positioning column with an axis parallel to the vertical direction is formed at one end of the third pressing head close to the bottom surface in the vertical direction. The third pressing head also extends at the end of the positioning column to form a circular third pressing surface perpendicular to the vertical direction. The oil seal can be sleeved on the positioning column with the end face abutting against the third pressing surface. The base, the first pressing head and the third pressing head can cooperate with the press to press the oil seal into the wheel hub.

[0011] In another exemplary embodiment of the bearing press fitting of the automobile wheel hub assembly, an annular groove is formed on the third press fitting surface, and when the oil seal is pressed into the wheel hub, the dust lip of the oil seal can enter the annular groove.

[0012] In another exemplary embodiment of the bearing press-fitting tool for the automobile wheel hub assembly, when the oil seal is pressed into the wheel hub, the third press-fitting surface can abut against the wheel hub to limit the position where the oil seal is pressed into the wheel hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following drawings are only used to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0014] Figure 1 The present invention is a schematic diagram of the exploded structure of a schematic implementation of a bearing press-fitting tool for an automobile wheel hub assembly.

[0015] Figure 2 The figure is a schematic diagram of the assembly structure of a bearing press-fitting tool for an automobile wheel hub assembly.

[0016] Figure 3 The present invention is a cross-sectional schematic diagram of a bearing press-fitting tool for an automobile wheel hub assembly in a working state.

[0017] Figure 4 for Figure 3 A partial enlarged schematic diagram of position A in the middle.

[0018] Figure 5 for Figure 3 A partial enlarged schematic diagram of position B in the middle.

[0019] Figure 6 The present invention is a cross-sectional schematic diagram of a bearing press-fitting tool for an automobile wheel hub assembly in another working state.

[0020] Figure 7 It is a structural schematic diagram of an exemplary implementation of the third pressure head.

[0021] Figure 8 The present invention is a cross-sectional schematic diagram of a bearing press-fitting tool for an automobile wheel hub assembly in another working state.

[0022] Description of symbols

[0023] 10 Base

[0024] 11 Bottom

[0025] 12 Guide column

[0026] 14. Abutment

[0027] 20 First pressure head

[0028] 21 First press-fit surface

[0029] 22 The first round platform

[0030] 23 First through hole

[0031] 30 Elastic parts

[0032] 40 Second pressure head

[0033] 41 Second press-fit surface

[0034] 42 The Second Round Table

[0035] 43 Second through hole

[0036] 50 Third pressure head

[0037] 51 Third press-fit surface

[0038] 52 Positioning column

[0039] 53 Annular groove

[0040] 60 Wheels

[0041] 62 Outer ring of the first tapered roller bearing

[0042] 64 Outer ring of the second tapered roller bearing

[0043] 66 Oil seal

[0044] H vertical direction. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

[0046] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0047] In this article, "first", "second", etc. do not indicate their importance or order, but are only used to indicate the difference between each other for the convenience of document description.

[0048] Figure 1 The structure diagram of a schematic implementation of a bearing press-fitting tool for an automobile wheel hub assembly. Figure 1 The bearing press fitting tool comprises a base 10 , a first pressing head 20 , an elastic member 30 and a second pressing head 40 . Figure 2 This is a schematic diagram of the assembly structure of the bearing press tooling for the automobile wheel hub assembly. Figure 3 This is a cross-sectional schematic diagram of a bearing press-fitting tool for an automobile wheel hub assembly in a working state. Figure 2 and Figure 3 The bearing press tool is used to press an outer ring 62 of a first tapered roller bearing and an outer ring 64 of a second tapered roller bearing into the wheel hub 60 .

[0049] Reference Figure 2 and Figure 3 The base 10 has a bottom surface 11, and the bottom surface 11 is used to stably place the base 10 on the press. The first pressing head 20 is movably disposed on the base 10 along a vertical direction H, and the vertical direction H is perpendicular to the bottom surface 11. Figure 4 for Figure 3 A partial enlarged schematic diagram of position A in the middle. Figure 3 and Figure 4 The first pressing head 20 has a first truncated cone 22 formed at one end thereof away from the bottom surface 11 along the vertical direction H, with an axis parallel to the vertical direction H. The first pressing head 20 also extends at the bottom of the first truncated cone 22 to form a first press-fitting surface 21 in an annular shape perpendicular to the vertical direction H. The outer ring 62 of the first tapered roller bearing can be sleeved on the first truncated cone 22 with the end face against the first press-fitting surface 21.

[0050] Reference Figure 3 , the elastic member 30 can apply force to the base 10 and the first pressing head 20 respectively, and provide an elastic force to move the first pressing head 20 away from the bottom surface 11. In the exemplary embodiment, the elastic member 30 is a spring and its two ends respectively abut against the base 10 and the first pressing head 20. However, it is not limited thereto, and in other exemplary embodiments, the elastic member 30 can be other structures that can provide elastic force.

[0051] Figure 5 for Figure 3 A partial enlarged schematic diagram of position B in the middle. Figure 3 and Figure 5 The second pressing head 40 can be movably arranged on the base 10 along the vertical direction H, and the second pressing head 40 can also be separated from the base 10. A second truncated cone 42 with an axis parallel to the vertical direction H is formed at one end of the second pressing head 40 close to the bottom surface 11 along the vertical direction H. The second pressing head 40 also extends at the bottom of the second truncated cone 42 to form a circular second press-fitting surface 41 perpendicular to the vertical direction H. The outer ring 64 of the second tapered roller bearing can be sleeved on the second truncated cone 42 and the end face abuts against the second press-fitting surface 41.

[0052] Figure 6 This is a cross-sectional schematic diagram of the bearing press-fitting tooling of the automobile wheel hub assembly in another working state. Figure 3 and Figure 6The base 10 , the first pressing head 20 and the second pressing head 40 can cooperate with the press to press the outer ring 62 of the first tapered roller bearing and the outer ring 64 of the second tapered roller bearing into the wheel hub 60 at the same time.

[0053] The bearing press-fitting tool for the automobile wheel hub assembly provided by the utility model can simultaneously press the outer ring 62 of the first tapered roller bearing and the outer ring 64 of the second tapered roller bearing into the wheel hub 60 by using the first press head 20 and the second press head 40, without turning the bearing, and the process is time-saving and labor-saving. The first press head 20 and the second press head 40 respectively have a first truncated cone 22 and a second truncated cone 42, and the base 10 and the elastic member 30 provide elastic force during the press-fitting process, so that the outer ring 62 of the first tapered roller bearing and the outer ring 64 of the second tapered roller bearing can be automatically aligned, thereby improving the installation accuracy and avoiding manual straightening and avoiding damage to parts.

[0054] Reference Figures 1 to 3 In the schematic embodiment, the base 10 has a guide column 12 extending perpendicularly to the bottom surface 11, and in the schematic embodiment, the guide column 12 is cylindrical. However, it is not limited to this. In other schematic embodiments, the guide column 12 can also be other shapes. A first through hole 23 corresponding to the shape of the guide column 12 is formed on the first pressure head 20, and the first pressure head 20 can be slidably mounted on the guide column 12 through the first through hole 23. A second through hole 43 corresponding to the shape of the guide column 12 is formed on the second pressure head 40, and the second pressure head 40 can be slidably mounted on the guide column 12 through the second through hole 43, and the second pressure head 40 can slide out from one end of the guide column 12. The above structure is easy to process and can ensure that the first pressure head 20 and the second pressure head 40 can be centrally aligned.

[0055] Reference Figures 1 to 3 In the exemplary embodiment, the base 10 has a cylindrical abutment portion 14, which is sleeved on the guide column 12, and the first pressure head 20 can abut against one axial end of the abutment portion 14. The elastic member 30 is sleeved on the guide column 12 in the abutment portion 14. In this way, the position of the elastic member 30 can be limited and the elastic member 30 can be protected.

[0056] Reference Figure 4 In the exemplary embodiment, the diameter of the bottom of the first truncated cone 22 is equal to the large inner diameter of the outer ring 62 of the first tapered roller bearing, and the taper of the first truncated cone 22 is greater than the taper of the raceway of the outer ring 62 of the first tapered roller bearing. With the above structure, the inclined surface of the first truncated cone 22 only plays a guiding role and does not serve as a press-fitting surface, thereby ensuring stable force during the press-fitting process.

[0057] Reference Figure 5In the exemplary embodiment, the diameter of the bottom of the second truncated cone 42 is equal to the large inner diameter of the outer ring 64 of the second tapered roller bearing, and the taper of the second truncated cone 42 is greater than the taper of the raceway of the outer ring 64 of the second tapered roller bearing. With the above structure, the inclined surface of the second truncated cone 42 only plays a guiding role and does not serve as a press-fitting surface, thereby ensuring stable force during the press-fitting process.

[0058] Figure 7 It is a structural schematic diagram of an exemplary implementation of the third pressure head. Figure 8 FIG. 2 is a cross-sectional view of another working state of the bearing press fitting of the automobile wheel hub assembly. After the outer ring 64 of the second tapered roller bearing and the outer ring 64 of the second tapered roller bearing are simultaneously pressed into the wheel hub 60, as shown in FIG. Figure 8 As shown in FIG. 1 , the second pressing head 40 is separated from the base 10. Figure 7 and Figure 8 The bearing press fitting tool further includes a third press head 50. The third press head 50 can be movably arranged on the base 10 along the vertical direction H, and the third press head 50 can also be separated from the base 10. A positioning column 52 with an axis parallel to the vertical direction H is formed at one end of the third press head 50 close to the bottom surface 11 along the vertical direction H. The third press head 50 also extends at the end of the positioning column 52 to form a circular ring-shaped third press fitting surface 51 perpendicular to the vertical direction H. The oil seal 66 can be sleeved on the positioning column 52 and the end face abuts against the third press fitting surface 51. The base 10, the first press head 20 and the third press head 50 can cooperate with the press to press the oil seal 66 into the wheel hub 60.

[0059] Reference Figure 7 and Figure 8 In the exemplary embodiment, an annular groove 53 is formed on the third press-fitting surface 51, and when the oil seal 66 is pressed into the wheel hub 60, the dust lip of the oil seal 66 can enter the annular groove 53. In this way, the oil seal can be protected.

[0060] Reference Figure 8 In the exemplary embodiment, when the oil seal 66 is pressed into the wheel hub 60, the third press-fitting surface 51 can abut against the wheel hub 60 to limit the position where the oil seal 66 is pressed into the wheel hub 60. This limits the press-fitting position of the oil seal and improves the press-fitting accuracy.

[0061] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0062] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present utility model. They are not intended to limit the scope of protection of the present utility model. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present utility model, such as combination, division or repetition of features, should be included in the scope of protection of the present utility model.

Claims

1. A bearing press-fitting tool for an automobile wheel hub assembly, which is used to press an outer ring of a first tapered roller bearing and an outer ring of a second tapered roller bearing into a wheel hub, characterized in that: The bearing press fitting tool comprises: A base (10) having a bottom surface (11); A first pressing head (20) is movably arranged on the base (10) along a vertical direction (H), wherein the vertical direction (H) is perpendicular to the bottom surface (11); a first truncated cone (22) with an axis parallel to the vertical direction (H) is formed at one end of the first pressing head (20) away from the bottom surface (11) along the vertical direction (H); the first pressing head (20) also extends at the bottom of the first truncated cone (22) to form a first pressing surface (21) in an annular shape perpendicular to the vertical direction (H); the outer ring of the first tapered roller bearing can be sleeved on the first truncated cone (22) and the end face abuts against the first pressing surface (21); an elastic member (30) capable of applying force to the base (10) and the first pressing head (20) respectively, and providing an elastic force causing the first pressing head (20) to move away from the bottom surface (11); and A second pressing head (40) is movably arranged on the base (10) along the vertical direction (H), and the second pressing head (40) can also be detached from the base (10); a second truncated cone (42) with an axis parallel to the vertical direction (H) is formed at one end of the second pressing head (40) close to the bottom surface (11) along the vertical direction (H); the second pressing head (40) also extends at the bottom of the second truncated cone (42) to form a second pressing surface (41) in an annular shape perpendicular to the vertical direction (H); the outer ring of the second tapered roller bearing can be sleeved on the second truncated cone (42) with the end face abutting against the second pressing surface (41); the base (10), the first pressing head (20) and the second pressing head (40) can cooperate with a press to press the outer ring of the first tapered roller bearing and the outer ring of the second tapered roller bearing into the wheel hub at the same time.

2. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 1, characterized in that: The base (10) has a guide column (12) extending perpendicularly to the bottom surface (11); the first pressing head (20) is formed with a first through hole (23) corresponding to the shape of the guide column (12); the first pressing head (20) is slidably mounted on the guide column (12) through the first through hole (23); the second pressing head (40) is formed with a second through hole (43) corresponding to the shape of the guide column (12); the second pressing head (40) is slidably mounted on the guide column (12) through the second through hole (43); and the second pressing head (40) is capable of sliding out from one end of the guide column (12).

3. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 2, characterized in that: The base (10) has a cylindrical abutment portion (14), the abutment portion (14) being sleeved on the guide column (12), the first pressure head (20) being able to abut against one axial end of the abutment portion (14), and the elastic member (30) being a spring sleeved on the guide column (12) in the abutment portion (14).

4. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 1, characterized in that: The diameter of the bottom of the first truncated cone (22) is equal to the major inner diameter of the outer ring of the first tapered roller bearing, and the taper of the first truncated cone (22) is greater than the taper of the raceway of the outer ring of the first tapered roller bearing.

5. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 1, characterized in that: The diameter of the bottom of the second truncated cone (42) is equal to the major inner diameter of the outer ring of the second tapered roller bearing, and the taper of the second truncated cone (42) is greater than the taper of the raceway of the outer ring of the second tapered roller bearing.

6. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 1, characterized in that: The bearing press fitting tool further comprises a third pressing head (50), the third pressing head (50) being movably arranged on the base (10) along the vertical direction (H), and the third pressing head (50) being also detachable from the base (10), and a positioning column (52) having an axis parallel to the vertical direction (H) is formed at one end of the third pressing head (50) close to the bottom surface (11) along the vertical direction (H), and the third pressing head (50) is further extended at the end of the positioning column (52) to form a circular ring-shaped third press fitting surface (51) perpendicular to the vertical direction (H), and the oil seal can be sleeved on the positioning column (52) with the end face abutting against the third press fitting surface (51), and the base (10), the first pressing head (20) and the third pressing head (50) can cooperate with a press to press the oil seal into the wheel hub.

7. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 6, characterized in that: An annular groove (53) is formed in the third press-fitting surface (51), and when the oil seal is pressed into the wheel hub, the dust lip of the oil seal can enter the annular groove (53).

8. The bearing press-fitting tool for the automobile wheel hub assembly according to claim 6, characterized in that: When the oil seal is pressed into the wheel hub, the third press-fitting surface (51) can abut against the wheel hub to limit the position at which the oil seal is pressed into the wheel hub.

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