One-time riveting device for damping bearing

Abstract

The utility model relates to the field of bearing machining, in particular to a damping bearing one-time riveting device which comprises an upper riveting die and a lower riveting die, a cavity used for riveting is reserved between the upper riveting die and the lower riveting die, and a guide face is arranged on the end face, facing the cavity, of the upper riveting die. The guiding face can abut against the end face, protruding out of the plastic sealing ring, of the metal covered edge and guide the end face of the metal covered edge to be bent in the direction close to the upper metal channel, a guiding arc groove is formed in the end face, facing the cavity, of the upper riveting die, and the inner wall of the guiding arc groove abuts against the outer ring wall of the metal covered edge and guides the inner ring wall of the metal covered edge to abut against the outer circumferential face of the upper metal channel to form fixation. And the guide surface is positioned on one side, far away from the metal lower channel, of the guide arc groove. Through the arrangement of the guide face and the guide arc groove, on the premise that the product quality is guaranteed, one-time riveting forming of the product is achieved, the product machining efficiency is improved, the probability of slipping of the covered edge of the product is reduced, and therefore the qualified rate of the product is increased.

Description

TECHNICAL FIELD

[0001] The application relates to the field of bearing processing, in particular to a one-time riveting device for a damping bearing. BACKGROUND

[0002] The bearing riveting is a very common structure in the bearing anti-dropping structure, and the large deformation structure in the bearing needs to be formed by the special spinning riveting equipment or the oil pressure riveting machine.

[0003] REFERENCE Figure 1 The prior art bearing comprises a metal upper channel 1, a metal lower channel 2, a metal cover 3 and a plastic sealing ring 4, the inner ring of the plastic sealing ring 4 is coaxially sleeved on the outer ring of the metal lower channel 2, the inner ring wall of the plastic sealing ring 4 abuts against the outer ring wall of the metal lower channel 2 to form a limit, the inner ring of the metal cover 3 is coaxially sleeved on the outer ring wall of the plastic sealing ring 4, and the end of the metal cover 3 protruding from the plastic sealing ring 4 is riveted and fixed on the upper surface of the metal upper channel 1 by the oil pressure riveting machine to form a fixed structure.

[0004] However, the oil pressure riveting machine needs to rivet the metal cover three times to form the product, and the riveting formed product is prone to metal cover slipping or product tightness, so that the qualified rate of the product is low. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the problem that the riveting formed product is prone to metal cover slipping or product tightness, the application provides a one-time riveting device for a damping bearing.

[0006] The one-time riveting device for a damping bearing provided by the application adopts the following technical scheme:

[0007] The one-time riveting device for a damping bearing comprises a riveting upper die and a riveting lower die, when the riveting upper die and the riveting lower die are closed, a cavity for riveting is left between the riveting upper die and the riveting lower die, the end face of the riveting lower die facing the cavity is used for placing the metal lower channel, the end face of the riveting upper die facing the cavity abuts against the metal upper channel, the end face of the riveting upper die facing the cavity is provided with a guide surface, the guide surface can abut against the end face of the metal cover protruding from the plastic sealing ring and guide the end face of the metal cover to bend in the direction close to the metal upper channel, the end face of the riveting upper die facing the cavity is provided with a guide arc groove, the inner wall of the guide arc groove abuts against the outer ring wall of the metal cover and guides the inner ring wall of the metal cover to abut against the outer peripheral surface of the metal upper channel to form a fixed structure, and the guide surface is located on the side of the guide arc groove away from the metal lower channel.

[0008] When the bearing needs to be riveted and fixed, the metal lower channel and the metal upper channel are sequentially stacked on the surface of the riveting lower die, the inner ring of the plastic sealing ring is coaxially sleeved on the outer ring of the metal lower channel, the inner ring wall of the plastic sealing ring abuts against the outer ring wall of the metal lower channel to form a limit, the inner ring of the metal cover is coaxially sleeved on the outer ring wall of the plastic sealing ring, the end of the metal cover protruding from the plastic sealing ring faces the riveting upper die, the riveting upper die and the riveting lower die are closed, the guide surface abuts against the end surface of the metal cover protruding from the plastic sealing ring and guides the metal cover end surface to bend towards the metal upper channel, the axial gap of the product after riveting is eliminated, the inner ring wall of the metal cover and the surface of the metal upper channel always abut against each other, sliding is prevented, meanwhile, the inner wall of the guide arc groove abuts against the outer ring wall of the metal cover and guides the inner ring wall of the metal cover to abut against the outer peripheral surface of the metal upper channel to form a fixation, the radial gap of the product is eliminated and the concentricity is naturally maintained, and the surface of the metal cover abuts against the surface of the metal upper channel to prevent slipping and loosening; meanwhile, the riveting force of the oil hydraulic riveting machine does not need to be too large, the plastic sealing ring is not easy to be deformed under pressure, one-time riveting forming of the product is realized under the premise of ensuring the quality of the product, the efficiency of product processing is improved, the probability of product cover slipping is reduced, and thus the qualified rate of the product is improved.

[0009] Optionally, the end surface of the riveting upper die facing the cavity is provided with a transition arc groove, and the transition arc groove is located on the side of the guide surface away from the guide arc groove.

[0010] By adopting the above technical scheme, the transition arc groove is located on the side of the guide surface away from the guide arc groove, the structural strength of the riveting upper die is increased, the riveting upper die is not easy to deform under pressure, and thus the service life of the one-time riveting device for the damping bearing is prolonged.

[0011] Optionally, the end surface of the riveting upper die facing the cavity is provided with a relief surface, the relief surface is located on the side of the guide arc groove close to the riveting lower die, and the inclination height of the relief surface decreases with the distance to the riveting lower die.

[0012] By adopting the above technical scheme, the relief surface is located in the cavity, when the riveting upper die and the riveting lower die are closed, the wear between the relief surface and the outer ring wall of the metal cover is reduced, the quality of product forming is improved, and the service life of the one-time riveting device for the damping bearing is prolonged.

[0013] Optionally, a limiting cavity is formed in the surface of the riveting lower die for embedding the end of the riveting upper die.

[0014] By adopting the above technical scheme, when the riveting lower die and the riveting upper die are closed, the end of the riveting upper die is embedded in the limiting cavity, the inner wall of the limiting cavity abuts against the outer peripheral surface of the riveting upper die to form a limit, the axial movement of the riveting upper die is prevented, the riveting upper die and the riveting lower die are concentric, and the situation that the riveting force on the product is too large is avoided, and thus the qualified rate of the product is further improved.

[0015] Optionally, the end surface of the riveting lower die towards the riveting upper die is provided with a positioning surface, the positioning surface is located on the side of the limiting cavity close to the riveting upper die, the inclination height of the positioning surface decreases with the distance to the riveting upper die, and the positioning surface guides the metal lower channel and the metal upper channel to be placed on the end surface of the riveting lower die in turn.

[0016] By adopting the above technical scheme, the inclination height of the positioning surface decreases with the distance to the riveting upper die, the positioning surface guides the metal lower channel and the metal upper channel to be placed on the end surface of the riveting lower die in turn, the wear between the product and the riveting lower die is reduced, and thus the quality of the riveting and forming of the product is ensured.

[0017] Optionally, the end surface of the riveting upper die towards the limiting cavity is provided with a buffer surface, the inclination height of the buffer surface increases with the distance to the axis of the riveting upper die, and the buffer surface guides the end part of the riveting upper die to be embedded into the limiting cavity.

[0018] By adopting the above technical scheme, when the riveting upper die and the riveting lower die are closed, the buffer surface guides the end part of the riveting upper die to be embedded into the limiting cavity, the inclination height of the buffer surface increases with the distance to the axis of the riveting upper die, the wear between the riveting upper die and the riveting lower die is reduced, and thus the service life of the one-time riveting device for the damping bearing is prolonged.

[0019] Optionally, the end surface of the riveting lower die towards the cavity is provided with a concentric arc groove, the concentric arc groove is used for embedding the end part of the metal cover close to the plastic sealing ring, and the axis of the riveting lower die and the axis of the metal lower channel coincide.

[0020] By adopting the above technical scheme, when the end part of the metal cover close to the plastic sealing ring is embedded into the concentric arc groove, the axis of the metal lower channel and the axis of the riveting lower die coincide, the concentric arrangement of the metal lower channel and the riveting lower die is realized, the eccentricity of the product in the riveting process is avoided, and thus the qualified rate of the bearing is further improved.

[0021] Optionally, the end surface of the riveting lower die towards the cavity is provided with a avoiding arc surface, and the avoiding arc surface guides the metal cover to be embedded into the cavity.

[0022] By adopting the above technical scheme, the avoiding arc surface guides the metal cover to be embedded into the cavity, and the wear between the avoiding arc surface and the metal cover is reduced.

[0023] Optionally, the end surface of the riveting lower die towards the cavity is provided with an adjusting surface, the adjusting surface is located on the side of the avoiding arc surface away from the riveting upper die, the adjusting surface can abut against the end surface of the metal cover and drive the metal cover to abut against the outer circumferential surface of the plastic sealing ring to form the limiting.

[0024] By adopting the above technical scheme, when the bearing size is too large, the adjusting surface abuts against the metal covering end surface and drives the metal covering to abut against the outer circumferential surface of the plastic sealing ring to form a limit, realizes the axial action on the metal covering, reduces the axial gap, and thus effectively ensures the consistency of the bearing riveting quality.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The setting of the guide surface and the guide arc groove realizes one-time riveting forming of the product under the premise of ensuring the product quality, improves the efficiency of product processing, reduces the probability of product covering slip, and thus improves the qualified rate of the product;

[0027] 2. The setting of the transition arc groove increases the structural strength of the riveting upper die, makes the riveting upper die not easy to deform under pressure, and thus prolongs the service life of the one-time riveting device for the damping bearing;

[0028] 3. The setting of the avoidance surface reduces the wear between the avoidance surface and the outer ring wall of the metal covering, thus improving the quality of product forming and prolonging the service life of the one-time riveting device for the damping bearing. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the prior art bearing.

[0030] Figure 2 is a schematic diagram of the overall structure in the embodiment of the present application.

[0031] Figure 3 is Figure 2 is an enlarged view of A in

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, metal upper channel; 2, metal lower channel; 3, metal covering; 4, plastic sealing ring; 5, riveting upper die; 51, cavity; 52, transition arc groove; 53, guide surface; 54, guide arc groove; 55, avoidance surface; 56, buffer surface; 6, riveting lower die; 61, limiting cavity; 62, positioning surface; 63, concentric arc groove; 64, avoidance arc surface; 65, adjusting surface. DETAILED DESCRIPTION

[0033] The following will be combined with the Figures 2-3 The present application will be further described in detail.

[0034] The embodiment of the present application discloses a one-time riveting device for a damping bearing. Referring to Figure 2 and Figure 3The application discloses a one-time riveting device for a damping bearing, which comprises a riveting upper die 5 and a riveting lower die 6, wherein the riveting upper die 5 and the riveting lower die 6 are both circular rings, the axis of the riveting upper die 5 coincides with the axis of the riveting lower die 6 when the riveting upper die 5 and the riveting lower die 6 are combined, a cavity 51 for riveting is left between the riveting lower die 6 and the riveting upper die 5, the end face of the riveting upper die 5 towards the cavity 51 abuts against a metal upper channel 1, the end face of the riveting lower die 6 towards the cavity 51 abuts against a metal lower channel 2, and the axis of the metal lower channel 2, the axis of the metal upper channel 1, the axis of the riveting upper die 5 and the axis of the riveting lower die 6 all coincide.

[0035] With reference to Figure 2 and Figure 3 , the end face of the riveting upper die 5 towards the cavity 51 is provided with a transition arc groove 52, the transition arc groove 52 increases the structural strength of the riveting upper die 5, so that the riveting upper die 5 is not easily deformed under pressure, thereby prolonging the service life of the one-time riveting device for the damping bearing, the end face of the riveting upper die 5 towards the cavity 51 is provided with a guide face 53, in the embodiment of the application, the inclination angle of the guide face 53 is ten degrees, the guide face 53 is located on the side of the transition arc groove 52 close to the riveting lower die 6, the guide face 53 can abut against the end face of the metal cover 3 protruding the plastic sealing ring 4 and guide the edge of the metal cover 3 end face to bend towards the metal upper channel 1, so as to eliminate the axial gap of the product after riveting, so that the end face of the metal cover 3 is always abutted against the end face of the bearing upper channel, and sliding is prevented.

[0036] With reference to Figure 2 and Figure 3 , the end face of the riveting upper die 5 towards the cavity 51 is provided with a guide arc groove 54, the guide arc groove 54 is located on the side of the guide face 53 close to the riveting lower die 6, the inner wall of the guide arc groove 54 abuts against the outer circle wall of the metal cover 3 and guides the inner circle wall of the metal cover 3 to abut against the outer peripheral surface of the metal upper channel 1 to form fixation, so as to eliminate the radial gap of the product after riveting and naturally keep the concentricity, so that the metal upper channel 1 is kept in close cooperation, sliding and loosening are prevented, one-time riveting forming of the product is realized, the efficiency of processing the product is improved, the probability of product cover sliding is reduced, and thus the qualified rate of the product is improved.

[0037] With reference to Figure 2 and Figure 3 , the end face of the riveting upper die 5 towards the cavity 51 is provided with a avoiding face 55, the avoiding face 55 is located on the side of the guide arc groove 54 close to the riveting lower die 6, the inclination height of the avoiding face 55 decreases with the distance to the axis of the riveting upper die 5, the avoiding face 55 reduces the abrasion between the riveting upper die 5 and the metal cover 3, and thus the processing quality of the bearing is improved.

[0038] With reference to Figure 2 and Figure 3, the end surface of the riveting upper die 5 is coaxially provided with a limiting cavity 61 for embedding the end of the riveting upper die 5, when the riveting lower die 6 and the riveting upper die 5 are closed, the end of the riveting upper die 5 is embedded in the limiting cavity 61, the inner wall of the limiting cavity 61 abuts against the outer peripheral surface of the riveting upper die 5 to form limiting, at the same time, the axis of the riveting upper die 5 and the axis of the riveting lower die 6 coincide, avoiding the misplacement of the riveting lower die 6 and the riveting upper die 5, thereby ensuring the processing quality of the product, at the same time, the inner wall of the limiting cavity 61 abuts against the end surface of the riveting upper die 5 to form limiting, so that the riveting force of the oil riveting press is not easy to be too large, ensuring that the plastic sealing ring 4 is not easy to be deformed under pressure, thereby ensuring the uniformity of the product quality, and ensuring that the metal cover 3 does not slip during the covering process.

[0039] Referring to Figure 2 and Figure 3 , the outer peripheral surface of the riveting upper die 5 towards the limiting cavity 61 is provided with a buffer surface 56, the inclination height of the buffer surface 56 increases with the distance to the riveting axis, the buffer surface 56 guides the end of the riveting upper die 5 to be embedded in the limiting cavity 61, reducing the wear between the riveting upper die 5 and the riveting lower die 6, thereby prolonging the service life of the one-time riveting device for the damping bearing.

[0040] Referring to Figure 2 and Figure 3 , the end surface of the riveting lower die 6 towards the riveting upper die 5 is provided with a positioning surface 62, the positioning surface 62 is located on the side of the limiting cavity 61 close to the riveting upper die 5, the inclination height of the positioning surface 62 increases with the distance to the axis of the riveting lower die 6, the positioning surface 62 guides the metal lower channel 2 and the metal upper channel 1 to be placed in turn on the end surface of the riveting lower die 6, so that the metal upper channel 1 and the metal lower channel 2 are not easy to be worn by the end surface of the riveting lower die 6, thereby improving the processing quality of the product.

[0041] Referring to Figure 2 and Figure 3 , the end surface of the riveting lower die 6 towards the cavity 51 is coaxially provided with a concentric arc groove 63, the concentric arc groove 63 is located on the side of the limiting cavity 61 away from the positioning cavity, the concentric arc groove 63 is for embedding the end of the metal cover 3 close to the plastic sealing ring 4, the axis of the riveting lower die 6 and the axis of the metal cover 3 coincide, the inner wall of the concentric arc groove 63 abuts against the outer peripheral surface of the metal cover 3 to form limiting, so that the metal cover 3 is not easy to be eccentric due to radial movement during the covering process under pressure, thereby further improving the quality of the bearing covering process.

[0042] Referring to Figure 2 and Figure 3, the end face of the riveting lower die 6 towards the cavity 51 is coaxially provided with an avoiding arc surface 64, the avoiding arc surface 64 is located at the side of the concentric arc groove 63 away from the limiting cavity 61, the avoiding arc surface 64 guides the metal cover 3 to embed into the cavity 51, reduces the abrasion of the riveting lower die 6 to the metal cover 3, thereby ensuring the riveting processing quality of the bearing; the end face of the riveting lower die 6 towards the cavity 51 is provided with an adjusting surface 65, the adjusting surface 65 is located at the side of the avoiding arc surface 64 away from the concentric arc groove 63, the adjusting surface 65 can abut against the end face of the metal cover 3 and drive the metal cover 3 to abut against the outer circumferential surface of the plastic sealing ring 4 to form a limit; when the size of the part is too large, the adjusting surface 65 generates an axial action to the metal cover 3, reduces the axial gap, and effectively ensures the consistency of the riveting quality of the bearing.

[0043] The implementation principle of the one-time riveting device for the damping bearing of the embodiment of the application is as follows: during bearing processing, the metal lower channel 2 and the metal upper channel 1 are sequentially stacked on the surface of the riveting lower die 6, the end part of the metal cover 3 close to the plastic sealing ring 4 is embedded into the concentric arc groove 63, the axis of the riveting lower die 6 coincides with the axis of the metal lower channel 2, the end part of the metal cover 3 protruding from the plastic sealing ring 4 faces the riveting upper die 5, the riveting upper die 5 and the riveting lower die 6 are closed, the end part of the riveting upper die 5 is embedded into the limiting cavity 61, the inner wall of the limiting cavity 61 abuts against the outer circumferential surface of the riveting upper die 5 to form a limit, and the axis of the riveting upper die 5 coincides with the axis of the riveting lower die 6, the guide surface 53 abuts against the end face of the metal cover 3 protruding from the plastic sealing ring 4 and guides the end face of the metal cover 3 to bend in the direction close to the metal upper channel 1, eliminates the axial gap of the product after riveting, makes the inner circumferential wall of the metal cover 3 always abut against the surface of the metal upper channel 1, prevents sliding, at the same time, the inner wall of the guide arc groove 54 abuts against the outer circumferential wall of the metal cover 3 and guides the inner circumferential wall of the metal cover 3 to abut against the outer circumferential surface of the metal upper channel 1 to form a fixation, eliminates the radial gap of the product, and naturally keeps concentric, and the surface of the metal cover 3 abuts against the surface of the metal upper channel 1 to prevent slipping and loosening; at the same time, the riveting force applied by the oil hydraulic riveting machine does not need to be too large, the plastic sealing ring 4 is not easy to be deformed under pressure, one-time riveting forming of the product is realized under the premise of ensuring the quality of the product, the efficiency of processing the product is improved, the probability of slipping of the product cover is reduced, and thereby the qualified rate of the product is improved.

[0044] The above are the preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A one-time swaging device for a vibration-damping bearing, characterized in that: The riveting upper die (5) and the riveting lower die (6) are provided with a cavity (51) for riveting when they are closed, the end face of the riveting lower die (6) towards the cavity (51) is provided for the metal lower channel (2), and the end face of the riveting upper die (5) towards the cavity (51) abuts against the metal upper channel (1), the end face of the riveting upper die (5) towards the cavity (51) is provided with a guide face (53) which can abut against the end face of the metal cover (3) protruding the plastic sealing ring (4) and guide the edge of the metal cover (3) end face to bend towards the metal upper channel (1), the end face of the riveting upper die (5) towards the cavity (51) is provided with a guide arc groove (54) which abuts against the outer wall of the metal cover (3) and guides the inner wall of the metal cover (3) to abut against the outer peripheral surface of the metal upper channel (1) to form fixation, and the guide face (53) is located on the side of the guide arc groove (54) away from the metal lower channel (2).

2. The one-time swaging device for a vibration-reducing bearing according to claim 1, characterized in that: The end face of the riveting upper die (5) towards the cavity (51) is provided with a transition arc groove (52) which is located on the side of the guide face (53) away from the guide arc groove (54).

3. The one-time swaging device for a vibration-reducing bearing according to claim 1, characterized in that: The end face of the riveting upper die (5) towards the cavity (51) is provided with a avoiding face (55) which is located on the side of the guide arc groove (54) close to the riveting lower die (6), and the inclination height of the avoiding face (55) decreases with the distance to the riveting lower die (6).

4. The one-time swaging device for a vibration-reducing bearing of claim 1, wherein: The surface of the riveting lower die (6) is provided with a limiting cavity (61) for the end of the riveting upper die (5) to embed.

5. The one-time swaging device for a vibration damper bearing of claim 1, wherein: The end face of the riveting lower die (6) towards the riveting upper die (5) is provided with a positioning face (62) which is located on the side of the limiting cavity (61) close to the riveting upper die (5), the inclination height of the positioning face (62) decreases with the distance to the riveting upper die (5), and the positioning face (62) guides the metal lower channel (2) and the metal upper channel (1) to be placed on the end face of the riveting lower die (6) in turn.

6. The one-time swaging device for a vibration damper bearing of claim 4, wherein: The end face of the riveting upper die (5) towards the limiting cavity (61) is provided with a buffer face (56) whose inclination height increases with the distance to the axis of the riveting upper die (5), and the buffer face (56) guides the end of the riveting upper die (5) to embed in the limiting cavity (61).

7. The one-time swaging device for a vibration damper bearing of claim 1, wherein: The end face of the riveting lower die (6) towards the cavity (51) is provided with a concentric arc groove (63) for the end of the metal cover (3) close to the plastic sealing ring (4) to embed, and the axis of the riveting lower die (6) coincides with the axis of the metal lower channel (2).

8. The one-time swaging device for a vibration damper bearing of claim 1, wherein: The end face of the riveting lower die (6) towards the cavity (51) is provided with an avoiding arc face (64) which guides the metal cover (3) to embed in the cavity (51).

9. The one-time swaging device for a vibration damper bearing of claim 8, wherein: The riveting lower die (6) is provided with an adjusting surface (65) on the end surface facing the cavity (51), the adjusting surface (65) is located on the side of the avoiding arc surface (64) away from the riveting upper die (5), and the adjusting surface (65) can abut against the end surface of the metal cover (3) and drive the metal cover (3) to abut against the outer peripheral surface of the plastic sealing ring (4) to form a limit.

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