CN213410053U

CN213410053U - Assembling die of self-lubricating joint bearing

Info

Publication number: CN213410053U
Application number: CN202022340233.XU
Authority: CN
Inventors: 戴学利; 周云; 牛建平; 朱金萍; 王珞
Original assignee: Bahuan Technology Group Co ltd
Current assignee: Bahuan Technology Group Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-11
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to a bearing field specifically discloses a self-lubricating joint bearing's assembly jig. The assembling die comprises a pre-forming module and a precise assembling module, wherein the pre-forming module comprises a pre-pressing upper die and a pre-pressing lower die, a pre-pressing platform is arranged on the pre-pressing lower die, and a spherical convex die is arranged on the pre-pressing platform; a ball female die corresponding to the ball male die is arranged on the prepressing upper die; the precise assembly module comprises an upper forming die and a lower forming die, wherein the lower forming die is provided with a forming platform, and the upper forming die is provided with a ball female die; the lower forming die is further provided with a positioning surface, and the upper forming die is further provided with a limiting surface corresponding to the positioning surface. The assembling die can protect the self-lubricating material film in the assembling process, simultaneously ensure the axial clearance, improve the service performance and prolong the service life of the self-lubricating oscillating bearing.

Description

Assembling die of self-lubricating joint bearing

Technical Field

The utility model relates to a bearing field, concretely relates to self-lubricating joint bearing's assembly jig.

Background

The self-lubricating joint bearing is a special bearing for an actuating component of a control system, and can bear and transmit radial and axial loads. The self-lubricating spherical plain bearing generally comprises a rod end and rolling balls, and when the self-lubricating spherical plain bearing runs, the rolling balls can not only rotate relative to the rod end, but also swing within a certain angle range.

In order to realize the self-lubrication of the bearing, the surface of the rolling ball is coated with a layer of self-lubricating material, and the running performance and the running life of the bearing are determined to a great extent by the adequacy of a self-lubricating material film. In production practice, it has been found that the assembly process poses a great threat to the adequacy of the self-lubricating material film, since the self-lubricating spherical plain bearing requires the assembly of the rolling balls with the rod end to be carried out after the setting of the self-lubricating material film has been completed.

The production and assembly process of the self-lubricating spherical plain bearing at least comprises the following steps: firstly, processing a cylindrical accommodating hole on a rod end, and arranging a self-lubricating material film on the surface of a rolling ball; then the rolling ball is placed in the containing hole, and the rod end is molded, so that the inner surface of the containing hole is matched with the rolling ball. In rod end forming operations, the currently common manufacturing processes are stamping and rolling. However, in either way, the self-lubricating material film is inevitably damaged during the forming process, and the axial play between the rolling balls and the accommodating holes is difficult to guarantee.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a self-lubricating joint bearing's assembly jig can protect self-lubricating material membrane in the assembling process, guarantees the axial internal clearance simultaneously, improves self-lubricating joint bearing's performance and life.

In order to solve the technical problem, the utility model provides a technical scheme as follows: the assembly die for the self-lubricating spherical plain bearing comprises a pre-forming module and an accurate assembly module, wherein the pre-forming module comprises a pre-pressing upper die and a pre-pressing lower die, a pre-pressing platform is arranged on the pre-pressing lower die, and a spherical male die is arranged on the pre-pressing platform; a ball female die corresponding to the ball male die is arranged on the prepressing upper die; the precise assembly module comprises an upper forming die and a lower forming die, wherein the lower forming die is provided with a forming platform, and the upper forming die is provided with a ball female die; the lower forming die is further provided with a positioning surface, and the upper forming die is further provided with a limiting surface corresponding to the positioning surface.

During assembly, the rod end is firstly placed into the pre-pressing platform, and the pre-pressing upper die descends to finish the forming of one end part of the containing hole on the basis of aligning the containing hole and the spherical male die. And then taking the rod end down from the preforming module, putting the rod end into the precise assembly module, arranging the preforming end of the accommodating hole downwards, putting the rolling ball provided with the self-lubricating material film into the accommodating hole, and moving the forming upper die downwards to realize the forming of the other end part of the accommodating hole.

Because in the whole assembly process, the load born by the rolling ball is very low, the self-lubricating material film can be well protected, the axial clearance is ensured, the service performance of the self-lubricating joint bearing is improved, and the service life of the self-lubricating joint bearing is prolonged.

Preferably, the spherical convex die and the pre-pressing lower die are separately arranged and detachably connected, and a proper spherical convex die can be selected according to the type of the self-lubricating spherical joint bearing.

Preferably, the forming platform is provided with an avoiding groove corresponding to the spherical concave die, and a limiting column is arranged in the avoiding groove. When the forming operation is carried out, a space is reserved for the installation of the rolling ball, the space at the upper end of the accommodating hole is larger, and the possibility of damage to the self-lubricating material film on the surface of the rolling ball can be effectively reduced. Meanwhile, the limiting column can play a role in positioning and limiting the rolling ball and the accommodating hole.

Preferably, a prepressing installation groove is arranged on the prepressing platform and is positioned on one side of the spherical male die; the forming platform is provided with a forming mounting groove. The pre-pressing mounting groove and the forming mounting groove are used for accommodating the rod end during forming.

Preferably, the precise assembly module further comprises a clearance adjustment assembly, the clearance adjustment assembly comprises a plurality of cushion blocks, and the thicknesses of the cushion blocks are arranged in a gradient manner; and a cushion block mounting space is arranged between the positioning surface and the limiting surface.

According to the size and the play requirement of the self-lubricating oscillating bearings of different models, different cushion blocks are selected and replaced, and the processing quality is guaranteed. In addition, after the assembly process is finished, the axial clearance between the rolling ball and the accommodating hole can be measured and compared with the preset axial clearance; if the measured value of the axial clearance is larger than the preset value, replacing a proper cushion block according to the difference value of the measured value and the preset value, and performing forming operation again to adjust the clearance; and if the measured value of the axial clearance is not greater than the preset value, finishing the assembly of the self-lubricating joint bearing.

Preferably, the lower molding die comprises a main body and a positioning part arranged around the main body, the upper end surface of the main body is a molding platform, and the upper end surface of the positioning part is a positioning surface; the lower molding die comprises a bearing part and a limiting part annularly arranged around the bearing part, the spherical concave die is arranged on the bearing part, and the lower end surface of the limiting part is a limiting surface; the cushion block is annular, and the cushion block is sleeved outside the main body.

The assembling die for the self-lubricating spherical plain bearing comprises an upper forming die and a lower forming die, wherein a forming platform is arranged on the lower forming die, and a spherical male die is detachably connected to the forming platform; the upper forming die is provided with a ball female die corresponding to the ball male die; the lower forming die is further provided with a positioning surface, and the upper forming die is further provided with a limiting surface corresponding to the positioning surface.

During assembly, the rod end is firstly placed on a forming platform, wherein a containing hole of the rod end is aligned with the spherical male die; and the upper molding die moves towards the lower molding die, and the accommodating hole is preformed through the matching of the ball female die and the ball male die. Then taking down the rod end after the preforming operation, and taking down the spherical male die on the forming platform; the rod end is placed into the forming platform again after being turned over, and the end part of the accommodating hole which is preformed at the moment is arranged downwards; placing rolling balls provided with self-lubricating material films in the accommodating holes; the upper molding die moves towards the lower molding die, and the ball concave die performs molding operation on the containing hole.

Preferably, the forming platform is provided with an avoiding groove, and a limiting column is arranged in the avoiding groove; the spherical convex die is sleeved on the limiting column. When the forming operation is carried out, a space is reserved for the installation of the rolling ball, the space at the upper end of the accommodating hole is larger, and the possibility of damage to the self-lubricating material film on the surface of the rolling ball can be effectively reduced. Meanwhile, the limiting column can play a role in positioning and limiting the rolling ball and the accommodating hole.

Preferably, the automobile seat further comprises a play adjusting assembly, the play adjusting assembly comprises a cushion block, and a cushion block mounting space is arranged between the positioning surface and the limiting surface. According to the size and the play requirement of the self-lubricating oscillating bearings of different models, different cushion blocks are selected and replaced, and the processing quality is guaranteed.

Preferably, the number of the cushion blocks is at least two, and the thicknesses of the cushion blocks are arranged in a gradient manner. After the assembly process is completed, the axial clearance between the rolling ball and the accommodating hole can be measured and compared with the preset axial clearance; if the measured value of the axial clearance is larger than the preset value, replacing a proper cushion block according to the difference value of the measured value and the preset value, and performing forming operation again to adjust the clearance; and if the measured value of the axial clearance is not greater than the preset value, finishing the assembly of the self-lubricating joint bearing.

Drawings

Fig. 1 is a schematic structural view of a preformed module in an assembly mold of a self-lubricating spherical plain bearing according to a first embodiment of the invention;

fig. 2 is a schematic structural diagram of a precision assembling module in an assembling die of a self-lubricating spherical plain bearing according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of an assembling die for a self-lubricating spherical plain bearing according to a second embodiment of the present invention;

fig. 4 is a flow chart of an assembling process of the self-lubricating spherical plain bearing according to the embodiment;

fig. 5 is a product process diagram corresponding to the assembling process of the self-lubricating spherical plain bearing according to the embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1 and 2, the assembling die for the self-lubricating spherical plain bearing comprises a pre-forming module and a precise assembling module. As shown in fig. 1, the preforming module includes a prepressing upper die 11 and a prepressing lower die 13, the prepressing lower die 13 is provided with a prepressing platform 12, the prepressing platform 12 is detachably connected with a ball male die 14, one side of the ball male die 14 is provided with a prepressing installation groove 16, and the prepressing installation groove 16 is used for installing the rod end 3. And the pre-pressing upper die 11 is provided with a spherical concave die 15 corresponding to the spherical convex die 14.

As shown in fig. 2, accurate assembly module include mould 21 and shaping lower mould 23 in the shaping, shaping lower mould 23 on be equipped with shaping platform 22, shaping platform 22 on be equipped with and dodge the groove, dodge the inslot and be equipped with spacing post 24, the one side of dodging the groove is equipped with shaping mounting groove 26, shaping mounting groove 26 be used for installing rod end 3. The upper forming die 21 is provided with a concave ball die 15 corresponding to the avoiding groove.

As shown in fig. 2, the lower forming die 23 is further provided with a positioning surface 28, and the upper forming die 21 is further provided with a limiting surface 25 corresponding to the positioning surface 28. Accurate assembly module still include the play adjustment subassembly, the play adjustment subassembly include a plurality of cushion 27, it is a plurality of the thickness of cushion 27 is the echelon setting. And a cushion block 27 mounting space is arranged between the positioning surface 28 and the limiting surface 25.

As shown in fig. 2, the lower molding die 23 includes a main body and a positioning portion disposed around the main body, the upper end surface of the main body is a molding platform 22, the upper end surface of the positioning portion is a positioning surface 28, and the molding platform 22 is higher than the positioning surface 28. The lower molding die 23 comprises a bearing part and a limiting part annularly arranged around the bearing part, the spherical concave die 15 is arranged on the bearing part, and the lower end face of the limiting part is a limiting face 25. The cushion block 27 is annular, and the cushion block 27 is sleeved outside the main body.

The assembling process of the self-lubricating spherical plain bearing at least comprises the following steps of:

step one, the rod end 3 is placed on the pre-pressing platform 12, wherein the accommodating hole of the rod end 3 is aligned with the ball male die 14. I.e., the state shown in fig. 4A, when the rod end 3 is as shown in fig. 5A.

And step two, the prepressing upper die 11 moves towards the prepressing lower die 13, and the accommodating hole is preformed through the matching of the spherical concave die 15 and the spherical convex die 14. And in the preforming process, controlling the unilateral axial play of the preforming end to be 1/3-1/2 of the total axial play. I.e., the state shown in fig. 4B, when the rod end 3 is as shown in fig. 5B.

Taking the rod end 3 subjected to the preforming operation down from the preforming module, placing the rod end into the forming platform 22, positioning the rolling ball 4 through the limiting column 24, and arranging the end part of the accommodating hole which is preformed downwards; rolling balls 4 provided with self-lubricating material films are placed in the accommodating holes. Meanwhile, according to the type of the self-lubricating spherical plain bearing, a proper cushion block 27 is selected to be placed on the positioning surface 28. I.e., the state shown in fig. 4C, when the rod end 3 is as shown in fig. 5C.

And step four, the upper forming die 21 moves towards the lower forming die 23 until the limiting surface 25 is contacted with the cushion block 27, and the concave spherical die 15 performs forming operation on the containing hole. I.e., the state shown in fig. 4D, when the rod end 3 is as shown in fig. 5D.

Measuring the axial clearance between the rolling ball 4 and the accommodating hole, and comparing the axial clearance with a preset axial clearance; if the measured value of the axial clearance is larger than the preset value, replacing a proper cushion block 27 according to the difference value between the measured value and the preset value, and repeating the third step and the fifth step; and if the measured value of the axial clearance is not greater than the preset value, finishing the assembly of the self-lubricating joint bearing.

Example two

As shown in fig. 3, the assembling die for the self-lubricating spherical plain bearing comprises an upper forming die 21 and a lower forming die 23, wherein a forming platform 22 is arranged on the lower forming die 23. The forming platform 22 is provided with an avoiding groove corresponding to the spherical concave die 15, a limiting column 24 is arranged in the avoiding groove, and the limiting column 24 is detachably connected with the spherical convex die 14. One side of the spherical convex die 14 is provided with a prepressing installation groove 16, and the prepressing installation groove 16 is used for installing the rod end 3. The upper forming die 21 is provided with a ball female die 15.

As shown in fig. 3, the lower forming die 23 is further provided with a positioning surface 28, and the upper forming die 21 is further provided with a limiting surface 25 corresponding to the positioning surface 28. Still include the play adjustment subassembly, the play adjustment subassembly include a plurality of cushion 27, it is a plurality of the thickness of cushion 27 is the echelon setting, locating surface 28 and spacing face 25 between be cushion 27 installation space.

As shown in fig. 3, the lower molding die 23 includes a main body and a positioning portion disposed around the main body, the upper end surface of the main body is a molding platform 22, the upper end surface of the positioning portion is a positioning surface 28, and the molding platform 22 is disposed higher than the positioning surface 28. The lower molding die 23 comprises a bearing part and a limiting part annularly arranged around the bearing part, the spherical concave die 15 is arranged on the bearing part, and the lower end surface of the limiting part is a limiting surface 25; the cushion block 27 is annular, and the cushion block 27 is sleeved outside the main body.

step one, the rod end 3 is placed on the forming platform 22, wherein the receiving hole of the rod end 3 is aligned with the spherical convex die 14. I.e., the state shown in fig. 4A, when the rod end 3 is as shown in fig. 5A.

And step two, the upper forming die 21 moves towards the lower forming die 23, and the accommodating holes are preformed through the matching of the spherical concave die 15 and the spherical convex die 14. And in the preforming process, controlling the unilateral axial play of the preforming end to be 1/3-1/2 of the total axial play. I.e., the state shown in fig. 4B, when the rod end 3 is as shown in fig. 5B.

And step three, taking down the rod end 3 after the preforming operation, taking down the spherical convex die 14 on the forming platform 22, turning over the rod end 3, and then putting the rod end into the forming platform 22 again, wherein the end part of the accommodating hole which is preformed is arranged downwards. Rolling balls 4 provided with self-lubricating material films are placed in the accommodating holes. Meanwhile, according to the type of the self-lubricating spherical plain bearing, a proper cushion block 27 is selected to be placed on the positioning surface 28. I.e., the state shown in fig. 4C, when the rod end 3 is as shown in fig. 5C.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides an assembly jig of self-lubricating joint bearing which characterized in that: comprises a pre-forming module and a precise assembling module,

the pre-forming module comprises a pre-pressing upper die and a pre-pressing lower die, a pre-pressing platform is arranged on the pre-pressing lower die, and a spherical convex die is arranged on the pre-pressing platform; a ball female die corresponding to the ball male die is arranged on the prepressing upper die;

the precise assembly module comprises an upper forming die and a lower forming die, wherein the lower forming die is provided with a forming platform, and the upper forming die is provided with a ball female die; the lower forming die is further provided with a positioning surface, and the upper forming die is further provided with a limiting surface corresponding to the positioning surface.

2. The assembly mold of claim 1, wherein: the spherical male die and the prepressing lower die are separately arranged and detachably connected.

3. The assembly mold according to claim 2, characterized in that: the forming platform is provided with an avoiding groove corresponding to the spherical concave die, and a limiting column is arranged in the avoiding groove.

4. The assembly mold of claim 1, wherein: the prepressing platform is provided with a prepressing installation groove, and the installation groove is positioned on one side of the spherical male die; the forming platform is provided with a forming mounting groove.

5. The assembly mold according to any one of claims 1 to 4, characterized in that: the precise assembly module further comprises a clearance adjusting assembly, the clearance adjusting assembly comprises a plurality of cushion blocks, and the thicknesses of the cushion blocks are arranged in a gradient manner; and a cushion block mounting space is arranged between the positioning surface and the limiting surface.

6. The assembly mold of claim 5, wherein: the lower molding die comprises a main body and a positioning part arranged around the main body, the upper end surface of the main body is a molding platform, and the upper end surface of the positioning part is a positioning surface; the lower molding die comprises a bearing part and a limiting part annularly arranged around the bearing part, the spherical concave die is arranged on the bearing part, and the lower end surface of the limiting part is a limiting surface; the cushion block is annular, and the cushion block is sleeved outside the main body.

7. The utility model provides an assembly jig of self-lubricating joint bearing which characterized in that: the forming device comprises an upper forming die and a lower forming die, wherein a forming platform is arranged on the lower forming die, and a ball male die is detachably connected to the forming platform; the upper forming die is provided with a ball female die corresponding to the ball male die; the lower forming die is further provided with a positioning surface, and the upper forming die is further provided with a limiting surface corresponding to the positioning surface.

8. The assembly mold of claim 7, wherein: an avoiding groove is formed in the forming platform, and a limiting column is arranged in the avoiding groove; the spherical convex die is sleeved on the limiting column.

9. The assembly mold according to claim 7 or 8, characterized in that: the clearance adjusting assembly comprises a cushion block, and a cushion block mounting space is arranged between the positioning surface and the limiting surface.

10. The assembly die of claim 9, wherein: the quantity of cushion is two at least, and a plurality of the thickness of cushion is the echelon setting.