Aircraft knuckle bearing flange rolling device with universal ball

Abstract

The present application relates to the field of mechanical processing, and particularly relates to a kind of aviation knuckle bearing flanging and rolling fixing device with universal ball.The device includes base and rolling head, and the rolling head includes support column, retainer, transmission steel ball and rolling steel ball;the base is evenly distributed with 3 positioning installation holes in the circumferential direction, for installing support column;one end of support column is installed by thread coupling with base, and the other end extends the bottom surface of base, and the end face of the other end is provided with hemispherical concave pit;transmission steel ball is evenly arranged in hemispherical concave pit, and rolling steel ball is placed on transmission steel ball, retainer is installed on the other end of support column, and steel ball is limited in retainer and hemispherical concave pit, to realize steel ball fixation;the other end of support column extends into bearing inner ring, to realize cooperation positioning;steel ball is partially exposed above the opening of retainer, for realizing aviation knuckle bearing flanging and rolling.

Description

Technical Field

[0001] This invention relates to the field of machining, and in particular to a flanged rolling fixing device for aerospace joint bearings with universal ball bearings. Background Technology

[0002] As crucial load-bearing and transmission components, aerospace spherical bearings are commonly used in various moving parts of aircraft. Due to the high loads and impacts they withstand during service, the installation process of spherical bearings in moving parts is extremely important. Spherical bearings are primarily connected to moving parts via a flanging and rolling mechanism. Currently, commonly used flanging and rolling devices include rollers and tapered rollers, all designed to mimic the shape of flanging grooves. However, according to relevant aviation standards, it is recommended to use steel balls for flanging and rolling. However, using steel ball rolling presents challenges due to the lack of specialized tooling, including difficulties in securing the steel balls, uneven stress distribution, and discontinuous processes. Summary of the Invention

[0003] The present invention aims to address the aforementioned processing challenges and solutions by providing a flange rolling fixing device for aerospace spherical bearings with universal ball bearings, thereby achieving a stable, continuous, and uniform processing process and ensuring the quality of bearing flange rolling.

[0004] To achieve the objectives of this invention, the technical solution adopted is as follows:

[0005] This invention has positive effects:

[0006] A flanged rolling fixing device for an aerospace spherical bearing with universal ball bearings is provided, comprising: a base and a rolling head, wherein the rolling head includes: a support column, a cage, transmission steel balls, and rolling steel balls;

[0007] The base has three circumferentially distributed positioning and mounting holes for mounting the support column. One end of the support column is connected to the base by a thread, and the other end extends out of the bottom surface of the base. The other end face is provided with a hemispherical recess. The transmission steel balls are evenly distributed in the hemispherical recess, and the rolled steel balls are placed on top of the transmission steel balls. The cage is installed at the other end of the support column to restrict the steel balls within the cage and the hemispherical recess, thereby fixing the steel balls. The steel ball part is exposed in the opening above the cage to realize the flange rolling of the aerospace spherical bearing.

[0008] The exposed steel balls are used to fold and roll the outer thin wall of the outermost flange groove of the bearing, or to fold and roll the inner thin wall of the innermost flange groove of the earring.

[0009] The base is made of mold steel and is heat-treated and quenched to improve the material hardness. The part includes three positioning and mounting holes with internal threads for connection with the support column. A positioning column is set on one end face where the positioning and mounting holes are located for positioning with the inner ring of the bearing. A clamping head is set on the other end face for connection with the rolling equipment.

[0010] The support column is made of mold steel and needs to be heat-treated and quenched to improve the material hardness. One end of the part has an external thread for connecting with the positioning hole of the base, and the other end also has an external thread for connecting with the cage. There is a spherical pit on the end face of the support column that connects with the cage.

[0011] The diameter of the spherical recess on the end face of the support column = the diameter of the rolled steel ball + the diameter of the transmission steel ball, and the depth of the spherical recess = the radius of the spherical recess.

[0012] The connection between the cage and the support column is threaded, and it mates with the rolled steel ball with a spherical surface with a clearance of 0.1mm. The edges on both sides of the spherical surface of the rolled steel ball are rounded with R0.2 to avoid scratching or jamming the rolled steel ball.

[0013] The rolling head can be used as a replacement part.

[0014] The device contains three steel balls for rolling. After the device is installed, the diameter of the pitch circle formed by the downward projection of the three rolling steel balls is equal to the diameter of the center circle of the flange groove of the spherical bearing.

[0015] After the device is installed, flip the entire device over and apply slight force to observe the coplanarity and rotational flexibility of the three rolling steel balls. If adjustment is needed, the number of transmission steel balls can be increased or decreased by 4 in the support column or the tightness of the retainer can be adjusted to control the coplanarity and flexibility of the device.

[0016] Beneficial effects:

[0017] 1) This invention achieves stable and continuous processing by using steel ball rolling to achieve flanging, which can effectively ensure a smooth transition at the flanging roll position, low stress concentration, and high flanging quality.

[0018] 2) The replacement part of the rolling head of the present invention can be made into a series of products according to the actual rolling products. When performing flanging and rolling of different specifications of spherical bearings, quick change of form and efficient processing can be achieved simply by changing the replacement part of the rolling head.

[0019] 3) The present invention has a simple and compact structure, all of which are solid bodies. The load-bearing parts are made of high-strength steel, resulting in low manufacturing cost and low assembly difficulty, and high reliability. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation and working state of the present invention;

[0023] Figure 3 This is a schematic diagram of the outermost flange groove of the bearing;

[0024] Figure 4 This is a schematic diagram of the innermost flange groove of the earring;

[0025] The components include: base 1, support column 2, cage 3, transmission steel ball 4, and rolled steel ball 5. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0027] In this case, by designing a special device, it is possible to achieve stable, continuous, and uniform flanging and rolling of aerospace joint bearings with steel balls, thereby effectively improving the flanging and rolling quality of aerospace joint bearings and ensuring the safety and reliability of related actuation systems.

[0028] This invention provides a flanged roll fixing device for aerospace spherical bearings with universal ball bearings, such as... Figure 1 As shown, the flange rolling fixing device consists of a base 1, a support column 2, a retainer 3, transmission steel balls 4, and rolling steel balls 5. Wherein:

[0029] The base 1 includes 3 positioning and mounting holes for mounting the support column 2; one end of the support column 2 is connected to the base 1 by a threaded connection, and the other end has a spherical recess. After the transmission steel balls 4 are evenly arranged in the spherical recess, the rolling steel balls 5 are placed on the transmission steel balls 4. Finally, the steel balls are fixed by installing the retainer 3; the retainer 3 is connected to the support column 2 by a thread.

[0030] The base 1 is made of mold steel and requires heat treatment and quenching to improve its hardness. The part includes three positioning and mounting holes with internal threads for connection with the support column 2. One end face containing the positioning and mounting holes includes a positioning column for positioning with the inner ring of the bearing; the other end face includes a clamping head for connecting to the rolling equipment.

[0031] The support column 2 is made of mold steel and requires heat treatment and quenching to improve its hardness. One end of the part has external threads for connection with the positioning hole of the base 1, and the other end also has external threads for connection with the cage 3. The end face of the support column 2 where it connects to the cage 3 has a spherical recess, wherein:

[0032] The diameter of the spherical recess on the end face of the support column 2 is equal to the diameter of the rolling steel ball 5 plus the diameter of the transmission steel ball 4, and the depth of the spherical recess is equal to the radius of the spherical recess.

[0033] The connection between the cage 3 and the support column 2 is threaded, and it mates with the rolled steel ball 5 with a spherical surface with a clearance of 0.1mm. The edges on both sides of the spherical surface of the rolled steel ball are rounded with R0.2 to avoid scratching and jamming the rolled steel ball 5.

[0034] In this device, the support column 2, the cage 3, the transmission steel ball 4, and the rolling steel ball 5 are assembled to form the rolling head. The rolling head can be replaced as a replacement part in the whole device.

[0035] The replacement parts for the rolling head can be manufactured into a series of tools according to the changes in the length of the support column 2 and the diameter of the rolling steel ball 5. Different series of replacement parts for the rolling head can be selected according to the different specifications and precision requirements of the aerospace joint bearing flanging and rolling conditions, so as to achieve rapid changeover.

[0036] The device contains three steel balls for rolling. After the device is installed, the diameter of the pitch circle formed by the projected centers of the three rolling steel balls is equal to the diameter of the center circle of the flange groove of the spherical bearing.

[0037] After the device is installed, flip the entire device over and apply slight force to observe the coplanarity and rotational flexibility of the three rolling steel balls 5. If adjustment is needed, transmission steel balls 4 can be added inside the support column 2 to adjust and control the coplanarity and flexibility of the device.

[0038] In actual use, the clamping head of the rolling equipment holds the base 1, the positioning pin of the base 1 passes through the bearing center hole, and the three rolling steel balls 5 are aligned with the bearing flange groove. Figure 3 and Figure 4 As shown; the rolling equipment applies pressure and starts to rotate, and the rolling steel ball 5 revolves and rotates under the action of pressure and rotation; under the rolling action of the rolling steel ball, the flanging and rolling processing of the aerospace joint bearing is realized.

[0039] In actual use, the rolling equipment clamps the clamping head of the base 1, the positioning pin of the base 1 passes through the bearing center hole, and the three rolling steel balls 5 are aligned with the earring flanging groove; the rolling equipment applies pressure and starts to rotate, and the rolling steel balls 5 revolve and rotate under the action of pressure and rotation; under the rolling action of the rolling steel balls, the earring flanging and rolling processing is realized.

[0040] Example:

[0041] The device designed in this invention is used in the process of flanging and rolling a joint bearing involved in a certain aero-machine component.

[0042] First, by measuring the position of the flanged rolling of the joint bearing of the actuating component, it was determined that a replacement rolling head with a support column 2 length of 15mm and rolling steel ball 5 diameter of 6mm was needed.

[0043] After completion, connect the roller head replacement part to the base 1 via threads; after installation, flip the entire device over, apply slight force and observe the coplanarity and rotational flexibility of the three roller steel balls 5. If adjustment is required, remove the corresponding roller head replacement part, remove the retainer 3 and roller steel balls 5, add transmission steel balls 4 into the spherical recess of the support column 2, and then reassemble according to the original structure until the coplanarity and flexibility of the device are adjusted and controlled.

[0044] Then, as Figure 2 Connect one end of the base 1 clamping head to the rolling equipment and fix the spherical bearing on the worktable; after fixing, gradually lower the flanging rolling device until the three rolling steel balls 5 make slight contact with the flanging groove at the same time, and confirm that the position is aligned.

[0045] Next, the flanging and rolling device is slightly raised, and the rolling equipment is started. The device begins to rotate and gradually lowers to apply pressure. When the rolling steel ball 5 contacts the flanging groove, the rolling steel ball 5 begins to revolve and rotate. Under the rolling action of the rolling steel ball 5, the flanging and rolling processing of the aerospace spherical bearing is finally achieved.

[0046] Finally, it should be noted that the specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0047] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0048] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A flanged rolling fixing device for an aerospace spherical bearing with universal ball bearings, characterized in that, include: The base (1) and the rolling head, the rolling head including: support column (2), cage (3), transmission steel ball (4), rolling steel ball (5); The base (1) has three positioning and mounting holes evenly distributed around the circumference for mounting the support column (2); one end of the support column (2) is connected to the base (1) by a threaded connection, and the other end extends out of the bottom surface of the base, with a hemispherical recess on the end face of the other end; the transmission steel balls (4) are evenly distributed in the hemispherical recess, the rolling steel balls (5) are placed on the transmission steel balls (4), and the cage (3) is installed at the other end of the support column (2) to restrict the steel balls (5) within the cage (3) and the hemispherical recess, thereby fixing the steel balls; part of the steel balls (5) are exposed above the opening of the cage (3) for the purpose of achieving the flanging and rolling of the aerospace joint bearing.

2. The flanged rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 1, characterized in that, The exposed steel ball (5) is used to roll the outer thin wall of the outermost flange groove of the bearing, or to roll the inner thin wall of the innermost flange groove of the earring.

3. The aerospace spherical bearing flange rolling fixing device with universal ball bearing as described in claim 1, characterized in that, The base (1) is made of mold steel and is heat-treated and quenched to improve the hardness of the material. The part includes three positioning and mounting holes with internal threads for connecting with the support column (2). A positioning column is set on one end face where the positioning and mounting holes are located for positioning with the inner ring of the bearing. A clamping head is set on the other end face for connecting with the rolling equipment.

4. The flange rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 1, characterized in that, The support column (2) is made of mold steel and needs to be heat-treated and quenched to improve the hardness of the material. One end of the part has an external thread on its outer circle, which is used to connect with the positioning hole of the base (1). The other end also has an external thread on its outer circle, which is used to connect with the cage (3). There is a spherical pit on the end face of the support column (2) that connects with the cage (3).

5. The flanged rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 4, characterized in that, The diameter of the spherical pit on the end face of the support column (2) = the diameter of the rolling steel ball (5) + the diameter of the transmission steel ball (4), and the depth of the spherical pit = the radius of the spherical pit.

6. The flange rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 1, characterized in that, The connection between the cage (3) and the support column (2) is threaded and spherically fitted with the rolled steel ball (5) with a fit clearance of 0.1mm. The edges on both sides of the spherical surface of the rolled steel ball are rounded with R0.2 to avoid scratching and jamming of the rolled steel ball (5).

7. The flange rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 1, characterized in that, The rolling head can be used as a replacement part.

8. The flange rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 1, characterized in that, The device contains three steel balls for rolling. After the device is installed, the diameter of the pitch circle formed by the downward projection of the three rolling steel balls (5) is equal to the diameter of the center circle of the flange groove of the spherical bearing.

9. The flange rolling fixing device for aerospace spherical bearings with universal ball bearings according to claim 1, characterized in that, After the device is installed, flip the entire device over and observe the coplanarity and rotational flexibility of the three rolling steel balls (5) after applying slight force. If adjustment is required, the number of transmission steel balls can be increased or decreased by 4 in the support column (2) or the tightness of the retainer (3) can be adjusted to achieve the adjustment and control of the coplanarity and flexibility of the device.

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