Support device for the plating of the surface of an aeronautical body deep groove ball bearing

Abstract

The application discloses a supporting device for the surface plating of a deep-groove ball bearing of an aeronautical body, which comprises a hard supporting piece, a soft sealing ring and a race sealing ring for cooperating with an inner ring raceway, the soft sealing ring is sleeved on the outer circumferential wall of the hard supporting piece, a plurality of sliding grooves are arranged on the outer circumferential wall of the hard supporting piece, a resisting block is slidably arranged in the sliding groove, a through hole is formed in the center of the hard supporting piece, two touch buttons are slidably arranged in the through hole, a reset spring is arranged between the two touch buttons, a guide groove is arranged on the outer circumferential wall of the resisting block, a guide block is arranged on the side wall of the touch button, the guide block is slidably arranged in the guide groove, and a bent groove is further arranged at the end of the guide groove on the resisting block. The device has the advantages of simple structure, reliable support, guarantee of the surface plating requirement of the body ball bearing and effective protection of the non-plating surface.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of support device for the surface plating of aeronautical body deep groove ball bearing. BACKGROUND

[0002] Aeronautical body deep groove ball bearing is a kind of special deep groove ball bearing for aircraft fuselage, and the general specification AS7949 mainly executed by it specifies plating requirements of outer surface (not including bearing inner diameter surface), to achieve surface corrosion resistance, long-term service purpose.Plating requirements are mainly AMS-QQ-P-416, TYPE I, CLASS 2.For general plating process, single outer ring or inner ring is electroplated as a whole, while body ball bearing requires partial electroplating, such as outer ring raceway surface, retaining edge surface, inner ring raceway surface and inner diameter surface are not allowed to have plating layer.Usually, local plating layer can be removed by superfinishing, but due to the special nature of AMS-QQ-P-416, TYPE I, CLASS 2 plating specified, its texture is relatively soft, and the clamping surface will be damaged after electroplating and clamping again, and after removing the plating layer on the raceway surface with plating layer by superfinishing, the raceway roughness is poor, which is difficult to guarantee the bearing precision requirement.Therefore, a local support protection device is needed to protect the non-plating surface while guaranteeing the surface plating requirements of body ball bearing. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a kind of support device for the surface plating of aeronautical body deep groove ball bearing, which is simple in structure, reliable in support, can guarantee the surface plating requirements of body ball bearing, and can effectively protect the non-plating surface.

[0004] To achieve the above-mentioned purpose, the present application provides a kind of support device for the surface plating of aeronautical body deep groove ball bearing, which includes hard support, soft sealing ring and raceway sealing ring for cooperating with inner ring raceway, the soft sealing ring is sleeved on the outer peripheral wall of hard support, a plurality of sliding grooves are arranged on the outer peripheral wall of hard support, a contact block is slidably arranged in the sliding groove, a through hole is formed in the center of hard support, two touch buttons are slidably fitted in the through hole, a return spring is arranged between the two touch buttons, a guide groove is arranged on the outer peripheral wall of contact block, a guide block is arranged on the side wall of touch button, the guide block and the guide groove are slidably fitted, and a curved groove is further arranged at the end of guide groove on the contact block.

[0005] The beneficial effects of such arrangement are that the hard support can be positioned and the soft sealing ring can be abutted on the raceway of the inner wall of the outer ring or the inner wall of the inner ring, shielding the position not requiring plating in the plating process, and through the knob, the abutting block can be pushed out to press the soft sealing ring in the corresponding position, ensuring the shielding effect, and through the guide groove, the guide can be realized, and after reaching the elbow groove position, the guide block on the knob is made to enter the elbow groove by twisting the knob, so that the soft sealing ring is pressed tightly. In the shielding function, the hard support is made of high-strength alloy material (such as 40CrNiMoA), and the cooperation precision with the bearing inner ring reaches H6 / g5 level, which can accurately ensure the coaxiality of the device and the bearing, avoid the misalignment of the soft sealing ring and the non-plating area due to the positioning deviation, effectively prevent the plating liquid from penetrating into the raceway surface, inner diameter surface and other key positions, and eliminate the plating residue from the source. The soft sealing ring is made of acid and alkali resistant fluororubber material, and the Shore hardness is controlled at 60-70A, which has enough elasticity to tightly fit with the inner wall of the bearing to form a sealing barrier, and can resist the erosion of the acid plating liquid in the electroplating process, and the service life is more than 3 times of ordinary rubber. The trapezoidal cooperation structure of the guide groove and the guide block can realize the smooth sliding of the abutting block, ensure the uniform circumferential stress of the soft sealing ring, and avoid the deformation failure of the sealing ring caused by local excessive extrusion. When the guide block enters the elbow groove, rotating the knob by a certain angle can complete the mechanical locking, and this structure can withstand the impact of liquid flow and vibration in the electroplating tank, effectively prevent the locking from loosening, and ensure the stability of the whole shielding.

[0006] As a further arrangement of the present application, the soft sealing ring comprises a skeleton and a soft body, and a through groove is arranged on the skeleton corresponding to the sliding groove position.

[0007] The beneficial effects of such arrangement are that the skeleton is made of thin metal or hard engineering plastic, which can provide rigid support for the soft sealing ring, effectively avoid the overall deformation and wrinkling of the soft body under the pressure of the abutting block or the impact of the electroplating liquid, and ensure the stable fitting form of the sealing ring and the inner wall of the bearing. The through groove on the skeleton is accurately corresponding to the sliding groove of the hard support, so that the abutting block can directly pass through the through groove to abut the soft body, ensuring that the pressure is directly applied to the sealing contact part, and avoiding the local sealing failure caused by force transmission deviation. At the same time, the soft body is fixed on the skeleton by vulcanization bonding or other methods, which can prevent the soft body from separating from the skeleton during electroplating, further improve the structural integrity and service life of the sealing ring.

[0008] As a further arrangement of the present application, a deformation groove is arranged on the soft body corresponding to the sliding groove position.

[0009] The beneficial effects of such an arrangement are that the deformation groove on the soft body precisely corresponds to the sliding groove, which can guide the soft body to deform along the preset path when the pressing block exerts pressure, thereby avoiding disordered wrinkles or local excessive stretching due to uneven stress, ensuring that the soft body is more closely and uniformly attached to the inner circumferential wall of the bearing, and improving the shielding and sealing performance of the non-plated area. At the same time, the deformation groove can disperse stress concentration when the soft body deforms, reduce material fatigue damage caused by repeated pressure deformation, reduce the risk of cracking and tearing of the soft body, and prolong the service life of the soft body. In addition, the design can also adapt to the pressure requirements of different extension lengths of the pressing block, ensuring stable deformation and reliable sealing in various working conditions, and further enhancing the structural use reliability.

[0010] As a further arrangement of the present application, a limiting flange is arranged on the outer circumferential wall of the hard support, and the frame edge abuts against the limiting flange.

[0011] The beneficial effects of such an arrangement are that the limiting flange on the hard support can reliably constrain the soft sealing ring from the axial direction, and when the pressing block exerts pressure or is impacted by the liquid flow during the electroplating process, the flange can directly block the frame from sliding in the axial direction, thereby avoiding displacement of the sealing ring as a whole and causing the shielding position to deviate. At the same time, the limiting flange can serve as a positioning reference for assembly of the sealing ring, enabling the frame to quickly and accurately dock with the hard support, ensuring the coaxiality of the sealing ring and the support, and further ensuring that the attachment position of the soft body and the non-plated area of the bearing is accurate and consistent. This structure does not require additional fixing parts, and stable positioning can be achieved through mechanical abutment, which not only simplifies the assembly process, but also maintains the assembly accuracy of the sealing ring for a long time, effectively improving the use reliability of the overall device.

[0012] As a further arrangement of the present application, a limiting flange is arranged on the outer circumferential wall of the hard support, and the frame edge abuts against the limiting flange.

[0013] The beneficial effects of such an arrangement are that the limiting flange on the hard support can reliably constrain the soft sealing ring from the axial direction, and when the pressing block exerts pressure or is impacted by the liquid flow during the electroplating process, the flange can directly block the frame from sliding in the axial direction, thereby avoiding displacement of the sealing ring as a whole and causing the shielding position to deviate. At the same time, the limiting flange can serve as a positioning reference for assembly of the sealing ring, enabling the frame to quickly and accurately dock with the hard support, ensuring the coaxiality of the sealing ring and the support, and further ensuring that the attachment position of the soft body and the non-plated area of the bearing is accurate and consistent. This structure does not require additional fixing parts, and stable positioning can be achieved through mechanical abutment, which not only simplifies the assembly process, but also maintains the assembly accuracy of the sealing ring for a long time, effectively improving the use reliability of the overall device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structural schematic diagram of the embodiment of the present application is shown in the figure.

[0015] Figure 2A cross-sectional structure schematic diagram of an embodiment of the present application;

[0016] Figure 3 A cooperation structure schematic diagram of a resisting block and a knob in an embodiment of the present application;

[0017] Figure 4 A structure schematic diagram of the resisting block in an embodiment of the present application;

[0018] Figure 5 A structure schematic diagram of the knob in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The present application provides an embodiment of a support device for the surface coating of an aeronautical body deep groove ball bearing, such as Figures 1 to 5As shown, it comprises a hard support 1, a soft sealing ring 2 sleeved on the outer peripheral wall of the hard support 1, and a race sealing ring for cooperating with the raceway of the inner ring, the outer peripheral wall of the hard support 1 is provided with a plurality of sliding grooves, a resisting block 5 is slidingly arranged in the sliding grooves, a through hole is formed in the center of the hard support 1, two touch buttons 3 are slidingly fitted in the through hole, a return spring 4 is arranged between the two touch buttons 3, a guide groove 51 is arranged on the outer peripheral wall of the resisting block 5, a guide block 31 is arranged on the side wall of the touch button 3, the guide block 31 and the guide groove 51 are slidingly fitted, and a turning groove 52 is further arranged at the end of the guide groove 51 on the resisting block 5. The beneficial effects of such arrangement are as follows: the hard support 1 can be positioned, and the soft sealing ring 2 can be abutted on the raceway of the outer peripheral wall of the inner ring or the inner peripheral wall of the inner ring, so as to achieve the shielding of the position which does not need plating in the plating process, and through the touch button 3, the resisting block 5 can be pushed out so as to press the soft sealing ring 2 in the corresponding position, so as to ensure the shielding effect, and through the guide groove 51, the guiding can be realized, after reaching the position of the turning groove 52, the guide block 31 on the touch button 3 is made to enter the turning groove 52 by twisting the touch button 3, so as to realize the pressing of the soft sealing ring 2. In the shielding function, the hard support 1 is made of high-strength alloy material (such as 40CrNiMoA), and the cooperation precision with the inner ring of the bearing reaches H6 / g5 level, which can accurately ensure the coaxiality of the device and the bearing, avoid the misalignment of the soft sealing ring 2 and the non-plating area due to the positional deviation, effectively prevent the electroplating liquid from penetrating into the raceway surface, inner diameter surface and other key positions, and eliminate the plating residue from the source. The soft sealing ring 2 is made of acid and alkali resistant fluororubber material, and the Shore hardness is controlled at 60-70A, which not only has enough elasticity and closely abuts the inner peripheral wall of the bearing to form a sealing barrier, but also can resist the erosion of the acid plating liquid in the electroplating process, and the service life is more than 3 times of ordinary rubber. The trapezoidal cooperation structure of the guide groove 51 and the guide block 31 can realize the stable sliding of the resisting block 5, ensure the uniform circumferential stress of the soft sealing ring 2, and avoid the deformation failure of the sealing ring due to local excessive extrusion. When the guide block 31 enters the turning groove 52, rotating the touch button 3 by a certain angle can complete the mechanical locking, the structure can withstand the impact of liquid flow and vibration in the electroplating tank, effectively prevent the locking from loosening, and ensure the stability of the whole shielding.

[0020] As a further arrangement of the present application, the soft sealing ring 2 comprises a skeleton 21 and a soft body 22, the skeleton 21 is provided with a through groove corresponding to the position of the sliding groove, and the soft body 22 is connected to the skeleton 21. The beneficial effect of such an arrangement is that the skeleton 21 is made of thin metal or hard engineering plastic, which can provide rigid support for the soft sealing ring 2, effectively prevent the soft body 22 from deforming and wrinkling as a whole under the pressure of the abutting block 5 or the impact of the electroplating solution, and ensure the stable fitting form of the sealing ring and the inner circumferential wall of the bearing. The through groove on the skeleton 21 corresponds to the sliding groove of the hard support 1, so that the abutting block 5 can directly pass through the through groove to abut against the soft body 22, ensuring that the pressure is directly applied to the sealing contact part, and avoiding local sealing failure caused by force transmission deviation. At the same time, the soft body 22 is fixed to the skeleton 21 by vulcanization or other methods, which can prevent the soft body 22 from separating from the skeleton 21 during electroplating, further improving the structural integrity and service life of the sealing ring.

[0021] As a further arrangement of the present application, the soft body 22 is provided with a deformation groove corresponding to the position of the sliding groove. The beneficial effect of such an arrangement is that the deformation groove on the soft body 22 corresponds to the sliding groove, which can guide the soft body 22 to deform along the preset path when the abutting block 5 is pressed, avoid disorderly wrinkling or local excessive stretching caused by uneven stress, and ensure that the soft body 22 fits more closely and uniformly with the inner circumferential wall of the bearing, thereby improving the shielding sealing performance of the non-plated area. At the same time, the deformation groove can disperse the stress concentration of the soft body 22 during deformation, reduce material fatigue damage caused by repeated pressure deformation, reduce the risk of cracking and tearing of the soft body 22, and prolong its service life. In addition, this design can also adapt to the pressure requirements of different extension lengths of the abutting block 5, ensuring stable deformation and reliable sealing under various working conditions, and further enhancing the structural use reliability.

[0022] As a further arrangement of the present application, the hard support 1 is provided with a limiting flange 11 on the outer circumferential wall, and the edge of the skeleton 21 abuts against the limiting flange 11. The beneficial effect of such an arrangement is that the limiting flange 11 on the hard support 1 can reliably constrain the soft sealing ring 2 from the axial direction, and when the abutting block 5 is pressed or impacted by the liquid flow during electroplating, the flange can directly block the skeleton 21 from sliding in the axial direction, avoiding the displacement of the sealing ring and the deviation of the shielding position. At the same time, the limiting flange 11 can be used as a positioning reference during the assembly of the sealing ring, so that the skeleton 21 can be quickly and accurately connected to the hard support 1, ensuring the coaxiality of the sealing ring and the support, and further ensuring the accurate consistency of the fitting position of the soft body 22 and the non-plated area of the bearing. This structure does not require additional fixing parts, and stable positioning can be achieved through mechanical abutment, which not only simplifies the assembly process, but also can long-term maintain the assembly accuracy of the sealing ring, effectively improving the use reliability of the overall device.

[0023] As a further arrangement of the present application, the outer peripheral wall of the soft sealing ring 2 is provided with a protruding bump for cooperating with the raceway of the outer ring. The beneficial effect of such an arrangement is that the protruding bump of the outer peripheral wall of the soft sealing ring 2 is designed with an arc surface consistent with the curvature of the raceway, which can form a precise fitting with the raceway surface, upgrading from linear contact to close surface contact, greatly improving the contact sealing performance, and effectively preventing the electroplating solution from seeping into the non-plating area along the raceway gap. At the same time, the protruding bump is made of high-elastic soft material 22, which can produce moderate deformation under pressure, not only filling the small machining errors or scratches on the raceway surface, but also enhancing the resistance pressure with the raceway, avoiding the risk of plating leakage due to loose fitting. In addition, the protruding structure can also strengthen the mechanical engagement between the sealing ring and the raceway, preventing the sealing ring from shifting due to liquid flow impact during electroplating, and further ensuring the stability of the shielding effect.

[0024] The above examples are only one of the preferred specific examples of the present application, and any usual changes and substitutions made by those skilled in the art within the scope of the technical solutions of the present application are also included in the protection scope of the present application.

Claims

1. A support device for aerofoil deep groove ball bearing surface plating, characterised in that: The application relates to a bearing assembly, which comprises a hard support, a soft sealing ring and a race sealing ring for cooperating with an inner ring raceway, the soft sealing ring is sleeved on the outer peripheral wall of the hard support, a plurality of sliding grooves are arranged on the outer peripheral wall of the hard support, a resisting block is slidingly arranged in the sliding grooves, a through hole is arranged in the center of the hard support, two touch buttons are slidingly matched in the through hole, a reset spring is arranged between the two touch buttons, a guide groove is arranged on the outer peripheral wall of the resisting block, a guide block is arranged on the side wall of the touch button, the guide block is slidingly matched with the guide groove, and a bent groove is further arranged at the end of the guide groove on the resisting block.

2. The support device for the aeronautical fuselage deep groove ball bearing surface coating according to claim 1, characterized in that: The soft sealing ring comprises a framework and a soft body, a through groove is arranged on the framework at the position corresponding to the sliding groove, and the soft body is connected to the framework.

3. The support device for aero-fuselage deep groove ball bearing surface coating according to claim 2, characterized in that: A deformation groove is arranged on the soft body at the position corresponding to the sliding groove.

4. The support device for aero-fuselage deep groove ball bearing surface coating according to claim 3, characterized in that: A limiting flange is arranged on the outer peripheral wall of the hard support, and the edge of the framework abuts against the limiting flange.

5. The support apparatus for aerospace fuselage deep groove ball bearing surface plating according to claim 1, wherein: A resisting protrusion for cooperating with an outer ring raceway is arranged on the outer peripheral wall of the soft sealing ring.

Images