CN220313229U - Rotary opposite-pressing tool for locking edge of bearing sleeve shell - Google Patents
Rotary opposite-pressing tool for locking edge of bearing sleeve shell Download PDFInfo
- Publication number
- CN220313229U CN220313229U CN202321833492.3U CN202321833492U CN220313229U CN 220313229 U CN220313229 U CN 220313229U CN 202321833492 U CN202321833492 U CN 202321833492U CN 220313229 U CN220313229 U CN 220313229U
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- Prior art keywords
- bearing
- annular groove
- base
- bearings
- bearing sleeve
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- 238000003825 pressing Methods 0.000 title claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 19
- 230000003068 static effect Effects 0.000 abstract description 6
- 230000009975 flexible effect Effects 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 19
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Landscapes
- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model discloses a rotary opposite-pressing tool for locking edges of a bearing sleeve shell, which comprises a shaft rod and a base, wherein first bearings are symmetrically sleeved in the middle of the shaft rod, nuts are arranged on two opposite sides of the two first bearings, a fixed mandrel is arranged on the base, and the bottom end of the fixed mandrel is fixed in the base through screws; the shaft lever is provided with a mounting hole, the mounting hole is positioned between the two first bearings, and the top of the fixed mandrel penetrates through the mounting hole to extend outwards and is provided with a second bearing; the outside cover of fixed dabber is equipped with the copper sheathing, and the copper sheathing is located the base top, and the outside cover of copper sheathing is equipped with the third bearing, and the outside cover of third bearing is equipped with the retaining ring. The tool is wholly divided into the double rotating parts and the static parts, and when the bearing sleeve is processed, only the double rotating parts and the static parts are required to be assembled together, and then longitudinal acting force and transverse acting force are utilized, so that the tool has flexible activity and controllability, and the yield is greatly improved.
Description
Technical Field
The utility model relates to the technical field of aviation device processing, in particular to a rotary opposite-pressing tool for a bearing sleeve shell lockstitch.
Background
The model B737 is a mid-short range dual jet airliner manufactured by boeing aircraft corporation in the united states, in which the hydraulic elevator control assembly is provided with centering operation of the elevator control assembly by spring-loaded centering cam mechanisms via a centering unit and a hydraulic operation feel actuator unit, and in the whole action, the bearing is extremely demanding, and special process treatment is also required for the outer race of the bearing, and the outer race of the bearing is replaced with an aluminum-based sleeve housing.
However, because the aluminum-based sleeve shell is made of aluminum-based composite materials, the fatigue strength is generally higher than that of basic metal, but the fracture toughness is reduced, and at present, in order to solve the technical problem, domestic enterprises choose to directly press the aluminum-based sleeve shell by a small press machine and a cushion ring so as to enable the aluminum-based sleeve shell to be bent and deformed, the operation is simple and rough, the bearing is easy to damage, the aluminum-based sleeve shell is uncontrollable in bending and easy to crack during bending and deformation, the shape is unstable, the precision is poor, the rejection rate is high,
disclosure of Invention
In order to solve one of the technical defects, the utility model provides a rotary counter-pressure tool for locking edges of a bearing sleeve shell.
The utility model provides a rotary opposite-pressing tool for locking edges of a bearing sleeve shell, which comprises a shaft rod and a base, wherein first bearings are symmetrically sleeved in the middle of the shaft rod, nuts are arranged on two opposite sides of the two first bearings, a fixed mandrel is arranged on the base, and the bottom end of the fixed mandrel is fixed in the base through a screw;
the shaft lever is provided with a mounting hole, the mounting hole is positioned between the two first bearings, and the top of the fixed mandrel penetrates through the mounting hole to extend outwards and is provided with a second bearing;
the outside cover of fixed dabber is equipped with the copper sheathing, and the copper sheathing is located the base top, and the outside cover of copper sheathing is equipped with the third bearing, and the outside cover of third bearing is equipped with the retaining ring.
In the utility model, the shaft lever comprises a mounting part and a rotating part, wherein the mounting part and the rotating part are both in columnar structures, the cross section of the shaft lever is annular, the circumferential diameter of the mounting part is larger than that of the rotating part, and the rotating part is arranged at two ends of the mounting part;
the two first bearings are sleeved at the two ends of the installation part, threads are arranged at the two ends of the installation part, and nuts are in threaded connection with the two ends of the installation part.
In the present utility model, the first bearing is a cylindrical roller bearing.
In the present utility model, the second bearing is a planar thrust needle bearing.
In the utility model, the base is of an annular structure, a first annular groove and a second annular groove are respectively arranged at the top and the bottom of the base, the first annular groove is communicated with the second annular groove, and the circumferential diameter of the first annular groove is smaller than that of the second annular groove;
the bottom end of the fixed mandrel penetrates through the first annular groove to extend into the second annular groove, and is fixed in the first annular groove and the second annular groove through screws.
In the present utility model, the clearance between the stator shaft and the third bearing is 0.01mm.
The rotary opposite-pressing tool for the lockstitch of the bearing sleeve shell has the following advantages:
1. the tool is wholly divided into the double rotating parts and the static parts, and when the bearing sleeve is processed, only the double rotating parts and the static parts are required to be assembled together, and then longitudinal acting force and transverse acting force are utilized, so that the tool has flexible activity and controllability, and the yield is greatly improved.
2. The annular groove is formed in the base, the limiting retainer ring is arranged on the aluminum-based sleeve shell, the protection copper sleeve is arranged on the bearing inner ring, and the bearing and the aluminum-based sleeve shell are limited and protected; after the press fitting is finished, the end face of the bearing is smooth and uniform, no crack or damage exists, the bearing is installed in the elevator control assembly, the installation accuracy is high, the movement operation between all the parts is flexible, and no abnormal sound exists.
3. When the bearing is selected, the plane thrust needle bearing and the cylindrical roller bearing are adopted, so that the axial and radial loads of the tool are greatly improved, the base and the positioning mandrel are both GCr15, and the tool has higher hardness, uniform structure and good wear resistance after quenching and low-temperature tempering, and ensures the stability and durability of the tool in use.
4. The dynamic and static surfaces adopt rolling bearings, so that rolling friction is reduced, the aluminum-based sleeve shell is protected, and the service life of the bearing is greatly prolonged.
5. The fit clearance between the positioning mandrel and the third bearing is 0.01mm, so that the third bearing and the aluminum-based sleeve shell cannot deviate from the axis in the press fitting process, and a better fitting effect is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic view of a rotary counter-pressure tool for locking a bearing sleeve housing;
in the figure: the bearing comprises a shaft lever 1, a first bearing 2, a fixed mandrel 3, a base 4, a third bearing 5, an aluminum-based sleeve shell 6, a second bearing 7, a screw 8, a nut 9, a retainer ring 10 and a copper sleeve 11.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of exemplary embodiments of the present utility model is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The rotary opposite-pressing tool for the lockstitch of the bearing sleeve shell comprises a shaft lever 1 and a base 4, wherein first bearings 2 are symmetrically sleeved in the middle of the shaft lever 1, nuts 9 are arranged on two opposite sides of the two first bearings 2, a fixed mandrel 3 is arranged on the base 4, and the bottom end of the fixed mandrel 3 is fixed in the base 4 through a screw 8;
the shaft lever 1 is provided with a mounting hole, the mounting hole is positioned between the two first bearings 2, and the top of the fixed mandrel 3 penetrates through the mounting hole to extend outwards and is provided with a second bearing 7;
the outside cover of fixed dabber 3 is equipped with copper sheathing 11, and copper sheathing 11 is located base 4 top, and the outside cover of copper sheathing 11 is equipped with third bearing 5, and the outside cover of third bearing 5 is equipped with retaining ring 10.
In a specific implementation process, as shown in fig. 1, a shaft lever 1 comprises an installation part and a rotation part, wherein the installation part and the rotation part are both in a columnar structure, the cross section of the shaft lever is annular, the circumference diameter of the installation part is larger than that of the rotation part, the rotation part is installed at two ends of the installation part, two first bearings 2 are sleeved at two ends of the installation part, threads are arranged at two ends of the installation part, nuts 9 are in threaded connection with two ends of the installation part, the two first bearings 2 are limited, and the first bearings 2 are cylindrical roller bearings; the top of the middle part of the installation part is provided with an installation hole with an annular cross section, the installation hole is positioned between the two first bearings 2, the hole depth of the installation hole is 7-8mm, the second bearing 7 is a plane thrust needle bearing, the plane thrust needle bearing and the cylindrical roller bearing are adopted, the axial and radial loads of the tool are greatly improved, and the second bearing 7 is arranged in the installation hole; the base 4 is of an annular structure, a first annular groove and a second annular groove are respectively formed in the top and the bottom of the base 4, the first annular groove is communicated with the second annular groove, the circumferential diameter of the first annular groove is smaller than that of the second annular groove, the diameter of the mandrel 3 is 7.9mm, the bottom end of the mandrel 3 penetrates through the first annular groove to extend into the second annular groove and is fixed in the first annular groove and the second annular groove through screws 8, and the mandrel 3 and the base 4 are made of GCr15 steel. When the aluminum-based sleeve shell 6 is processed, the aluminum-based sleeve shell 6 is sleeved between the inner side of the retainer ring 10 and the outer side of the third bearing 5, then acting force is applied to the second bearing 7 vertically through a press machine, downward acting force is uniformly transmitted to the two symmetrical first bearings 2, meanwhile, the shaft rod 1 is rotated at a uniform speed until the aluminum-based sleeve shell 6 and the outer ring end face of the third bearing 5 are tightly attached to each other, in the process, the vertical pressure is uniform, the shaft rod 1 rotates at a uniform speed, the aluminum-based sleeve shell 6 is not unnecessarily urgent, deformation stress is slowly released to prevent bending fracture, one end of the aluminum-based sleeve shell 6 is bent, the third bearing 5 is turned over, and the other end of the aluminum-based sleeve shell 6 is pressed; the application principle of the tool is as follows: in the principle of constant axial and precession angular momentum conservation, in the relative motion, when the movable (second bearing 2) and static (aluminum-based sleeve shell 6) rings contact the surface, the longitudinal acting force provided by the press machine and perpendicular to the rotation axis and the transverse acting force of the second bearing 7 realize slow bending and fitting of the aluminum-based sleeve shell 6 on the bearing.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. The rotary opposite-pressing tool for the lockstitch of the bearing sleeve shell is characterized by comprising a shaft lever (1) and a base (4), wherein first bearings (2) are symmetrically sleeved in the middle of the shaft lever (1), nuts (9) are arranged on two opposite sides of the two first bearings (2), a fixed mandrel (3) is arranged on the base (4), and the bottom end of the fixed mandrel (3) is fixed in the base (4) through a screw (8);
the shaft lever (1) is provided with a mounting hole, the mounting hole is positioned between the two first bearings (2), and the top of the fixed mandrel (3) penetrates through the mounting hole to extend outwards and is provided with a second bearing (7);
the outer side cover of fixed core axle (3) is equipped with copper sheathing (11), copper sheathing (11) are located base (4) top, the outside cover of copper sheathing (11) is equipped with third bearing (5), the outside cover of third bearing (5) is equipped with retaining ring (10).
2. The rotary counter-pressure tooling for the overlock of the bearing sleeve shell according to claim 1, wherein the shaft lever (1) comprises a mounting part and a rotating part, wherein the mounting part and the rotating part are both in columnar structures, the cross sections of the mounting part and the rotating part are annular, the circumferential diameter of the mounting part is larger than that of the rotating part, and the rotating part is arranged at two ends of the mounting part;
two first bearings (2) are sleeved at two ends of the installation part, threads are arranged at two ends of the installation part, and nuts (9) are in threaded connection with two ends of the installation part.
3. A rotary counter-pressure tooling for the lockstitch of a bearing sleeve housing according to claim 2, wherein the first bearing (2) is a cylindrical roller bearing.
4. The rotary counter-pressure tooling for the overlock of a bearing sleeve housing according to claim 1, characterized in that said second bearing (7) is a planar thrust needle bearing.
5. The rotary counter-pressure tool for locking the edge of the bearing sleeve shell according to claim 1, wherein the base (4) is of an annular structure, a first annular groove and a second annular groove are respectively formed in the top and the bottom of the base (4), the first annular groove and the second annular groove are communicated, and the circumferential diameter of the first annular groove is smaller than that of the second annular groove;
the bottom end of the centering shaft (3) penetrates through the first annular groove to extend into the second annular groove, and is fixed in the first annular groove and the second annular groove through screws (8).
6. The rotary counter-pressure tooling for the overlock of the bearing sleeve housing according to claim 1, characterized in that the clearance between the stator shaft (3) and the third bearing (5) is 0.01mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321833492.3U CN220313229U (en) | 2023-07-12 | 2023-07-12 | Rotary opposite-pressing tool for locking edge of bearing sleeve shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321833492.3U CN220313229U (en) | 2023-07-12 | 2023-07-12 | Rotary opposite-pressing tool for locking edge of bearing sleeve shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220313229U true CN220313229U (en) | 2024-01-09 |
Family
ID=89415553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321833492.3U Active CN220313229U (en) | 2023-07-12 | 2023-07-12 | Rotary opposite-pressing tool for locking edge of bearing sleeve shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220313229U (en) |
-
2023
- 2023-07-12 CN CN202321833492.3U patent/CN220313229U/en active Active
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