Automotive wear pad assembly and process

Abstract

The application discloses a kind of automobile wear pad assembly and process method, including universal joint, wear pad assembly, universal joint axle, wheel hub axle;Ball cage bearing is installed in the inside of universal joint, universal joint axle on universal joint passes through wheel hub, and wear pad assembly is arranged in the contact position of the end of universal joint axle and wheel hub, universal joint axle is connected with wheel hub spline, and universal joint axle is locked by lock nut;When universal joint is subjected to instantaneous torque, torque is transmitted to wheel hub by spline, at this time, it will generate adhesive friction on wear pad assembly at the contact of wheel hub bearing and fixed end universal joint end face.Can guarantee the durability of its product performance, effectively reduce the friction coefficient between its and contact surface, reduce adhesive wear, and then play the noise reduction effect, can effectively improve the wear resistance and reduce noise generated between the contact surface of the fixed end universal joint end face of automobile transmission shaft / drive shaft and wheel hub bearing.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile parts, in particular to an automobile wear-resistant gasket assembly and process. BACKGROUND

[0002] Nowadays, automobiles have gradually become a daily transportation tool for people, and the automobile drive shaft is the shaft that can transmit power in the transmission shaft of the universal transmission device.

[0003] The existing automobile adopts the fixed end universal joint end face of the drive shaft (transmission shaft) and the contact end face of the hub bearing, and the friction noise is generated between them in the motion state. The reason is that the wear-resistant gasket at the contact position is continuously worn and falls off with the periodic motion time, and the durability is poor, thereby generating friction noise between the fixed end universal joint end face of the drive shaft (transmission shaft) and the hub bearing.

[0004] In summary, the existing automobile wear-resistant gasket drive shaft (transmission shaft) fixed end universal joint end face and hub bearing friction noise causes poor product performance durability, and the wear-resistant layer is easy to wear and fall off. SUMMARY

[0005] In order to solve the problems existing in the prior art, the present application provides an automobile wear-resistant gasket assembly and process, which can ensure the product performance durability, effectively reduce the friction coefficient between the contact surfaces, reduce the adhesive wear, and thus play a noise reduction effect, and can effectively improve the wear resistance and reduce the noise between the contact surfaces of the fixed end universal joint end face of the automobile transmission shaft / drive shaft and the hub bearing.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] An automobile wear-resistant gasket assembly, comprising a universal joint, a wear-resistant gasket assembly, a universal joint shaft, a hub bearing, a spline, a locking nut, and a ball cage bearing;

[0008] The ball cage bearing is installed inside the universal joint, the universal joint shaft on the universal joint passes through the hub, the contact part of the end of the universal joint shaft and the hub is provided with the wear-resistant gasket assembly, the universal joint shaft is connected with the hub spline, and the universal joint shaft is locked by the locking nut.

[0009] When the universal joint is subjected to instantaneous torque, the torque is transmitted to the hub through the spline, and at this time, the adhesive friction is generated on the wear-resistant gasket assembly at the contact part of the hub bearing and the fixed end universal joint end face.

[0010] Preferably, the hub bearing is in interference fit with the hub.

[0011] Preferably, the wear-resistant gasket assembly is made of low-carbon alloy steel cold-rolled plate.

[0012] Preferably, the thickness of the wear pad assembly is in the range of 0.2mm to 3.0mm.

[0013] Preferably, a gasket is arranged at the connecting part between the lock nut and the hub.

[0014] A process for manufacturing a wear pad assembly for an automobile, comprising the following steps,

[0015] Step 1, placing the wear pad assembly into a carbonitriding furnace;

[0016] Step 2, melting the medium in the carbonitriding furnace, and synchronously introducing nitrogen gas N2;

[0017] Step 3, performing low-temperature nitrocarburizing treatment on the wear pad assembly;

[0018] Step 4, after the nitrocarburizing treatment on the wear pad assembly is performed for 4-8 hours, fast cooling;

[0019] Step 5, combining the wear pad assembly with the elastic fixing clamps, and the included angle between the central axes of two adjacent elastic fixing clamps is 120°;

[0020] Step 6, assembling the two side end faces of the wear pad assembly with the fixed-end universal joint of the automobile drive shaft and the hub bearing;

[0021] Step 7, arranging the three elastic fixing clamp feet on the inner circumference of the wear pad to form an elastic inner circle for clamping the universal joint shaft of the fixed-end universal joint, and then rotating to test;

[0022] Step 8, connecting the universal joint with the hub through the spline, locking through the lock nut, and fitting the hub bearing with the hub with interference, so that the rotation is free of abnormal sound; when the universal joint is subjected to instantaneous torque, the torque is transmitted to the hub through the spline, and at this time, the adhesive friction is generated at the joint between the hub bearing and the fixed-end universal joint.

[0023] Preferably, the low-temperature nitrocarburizing of the wear pad assembly is performed at temperatures of 530℃, 550℃, 570℃ and 600℃, respectively, and the nitrocarburizing treatment time is 2h, 4h, 6h and 8h, respectively.

[0024] Preferably, the medium is at least one of kerosene, ethanol and acetone.

[0025] Compared with the prior art, the present application has the following beneficial technical effects:

[0026] The application provides a kind of automobile wear-resistant gasket process and its application, the wear-resistant gasket is low-carbon alloy steel as matrix, and low-carbon alloy steel cold-rolled plate material is treated by carbonitriding heat treatment, compound layer is generated on the surface of wear-resistant gasket after treatment, layer thickness is about 2-25 μm, its hardness HV is about 1000-1500, and the physical layer has excellent wear resistance effect.The wear-resistant gasket is used between frictional contact surfaces, and the physical layer on it will not fall off as the friction time extends, ensuring its durability, effectively reducing the friction coefficient between it and the contact surface, reducing adhesive wear, and further playing a noise reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a kind of automobile wear-resistant gasket assembly structure schematic diagram of the application;

[0028] Figure 2 It is a kind of automobile wear-resistant gasket assembly structure plan view of the application;

[0029] In the drawings: 1 is universal joint;2 is wear-resistant gasket assembly;3 is universal joint shaft;4 is wheel hub bearing;5 is spline;6 is gasket;7 is lock nut;8 is ball cage bearing. DETAILED DESCRIPTION

[0030] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are considered to be essentially exemplary rather than limiting.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] The automobile wear-resistant gasket assembly of the present application comprises a universal joint 1, a wear-resistant gasket assembly 2, a universal joint shaft 3, a hub bearing 4, a spline 5, a gasket 6, a locking nut 7 and a ball cage bearing 8.

[0038] The ball cage bearing 8 is installed inside the universal joint 1, the universal joint shaft 3 on the universal joint 1 passes through the hub, and the wear-resistant gasket assembly 2 is arranged at the contact position of the end of the universal joint shaft 3 with the hub. The universal joint 1 is connected with the hub spline through the spline 5, and is locked by the locking nut 7. The hub bearing 4 is in interference fit with the hub, and there is no abnormal noise during rotation. When the universal joint 1 is subjected to instantaneous torque, the torque is transmitted to the hub through the spline 5, and at this time, the adhesive friction is generated at the contact position of the hub bearing 5 and the end surface of the fixed end universal joint 1.

[0039] The wear-resistant gasket assembly can reduce the friction coefficient between the end surface of the universal joint 1 of the automobile drive shaft (transmission shaft) and the end surface of the hub bearing 4, and can reduce the friction noise during movement.

[0040] The application provides a car wear-resistant gasket process and application thereof, the wear-resistant gasket takes low-carbon alloy steel (cold-rolled plate) as a matrix, and the Q235 (low-carbon alloy steel cold-rolled plate) is treated by carbonitriding heat treatment, a compound layer is generated on the surface of the wear-resistant gasket after treatment, the thickness of the layer is about 2-25 microns, the hardness HV is about 1000-1500, and the physical layer has excellent wear resistance. The wear-resistant gasket is used between frictional contact surfaces, and the physical layer on the wear-resistant gasket does not fall off with the extension of friction time, the durability is ensured, the friction coefficient between the wear-resistant gasket and the contact surface is effectively reduced, the adhesive wear is reduced, and the noise reduction effect is achieved.

[0041] The wear-resistant gasket is used in the automobile field, and can effectively improve the wear resistance between the contact surface of the fixed end universal joint of the automobile transmission shaft / drive shaft and the hub bearing and reduce the noise.

[0042] Embodiment 2

[0043] The application provides a car wear-resistant gasket assembly process, which comprises the following steps,

[0044] 1. The material of the wear-resistant gasket is Q235 (low-carbon alloy steel cold-rolled plate), and the thickness is 0.2mm-3.0mm;

[0045] 2. The wear-resistant gasket Q235 (low-carbon alloy steel cold-rolled plate) is placed in a carbonitriding furnace, and a gas method is adopted;

[0046] 3. A melting medium (at least one of kerosene, ethanol and acetone) is added into the carbonitriding furnace, and nitrogen N2 is synchronously introduced;

[0047] 4. The wear-resistant gasket is subjected to low-temperature carbonitriding at 530℃, 550℃, 570℃ and 600℃ (less than 620℃) respectively, and the carbonitriding treatment time is 2h, 4h, 6h and 8h (note that the nitriding temperature cannot exceed the tempering temperature);

[0048] 5. After the wear-resistant gasket is subjected to carbonitriding treatment for 4-8h, fast cooling is carried out, and the fast cooling can improve the fatigue strength and hardness of the wear-resistant gasket;

[0049] 6. The wear-resistant gasket is combined with three elastic fixing clamps, and the included angle between the central axes of two adjacent elastic fixing clamps is 120°;

[0050] 7. The wear-resistant gasket is combined, and the two side end faces of the wear-resistant gasket are assembled with the fixed end universal joint 1 of the automobile drive shaft (transmission shaft) and the hub bearing 4;

[0051] 8. The three elastic fixing clamp feet are arranged on the inner circumference of the wear-resistant gasket, an elastic inner circle is formed, and the elastic inner circle is used for clamping the universal joint shaft 3 of the fixed end universal joint 1 and is tried to rotate.

[0052] 9. Connect the universal joint 1 to the hub spline via spline 5, and lock it with lock nut 7. The hub bearing 4 is interference-fitted with the hub, and there is no abnormal noise when rotating. When the universal joint 1 is subjected to instantaneous torque, the torque is transmitted to the hub through spline 5. At this time, adhesive friction will occur at the contact point between the hub bearing 5 and the end face of the fixed end universal joint 1.

[0053] 10. After applying this wear-resistant gasket assembly, the coefficient of friction between the end face of the universal joint 1 of the automotive drive shaft (transmission shaft) and the end face of the wheel hub bearing 4 can be reduced, and abnormal friction noise during operation can be reduced.

[0054] The present invention provides an automotive wear-resistant gasket assembly that can ensure the durability of its product performance, effectively reduce the coefficient of friction between it and the contact surface, reduce adhesive wear, and thus achieve noise reduction.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A process for making an automotive wear pad assembly, characterized by, The automobile wear-resistant gasket assembly comprises a universal joint (1), a wear-resistant gasket assembly (2), a universal joint shaft (3), a hub bearing (4), a spline (5), a locking nut (7), and a ball cage bearing (8). The ball cage bearing (8) is mounted in the universal joint (1), the universal joint shaft (3) of the universal joint (1) passes through the hub, the wear-resistant gasket assembly (2) is arranged at the contact position between the end of the hub and the universal joint shaft (3), the universal joint shaft (3) is connected with the hub through the spline (5), and the universal joint shaft (3) is locked through the locking nut (7). When the universal joint (1) is subjected to instantaneous torque, the torque is transmitted to the hub through the spline (5), and at this time, the adhesion friction is generated on the wear-resistant gasket assembly (2) at the abutting position between the hub bearing (4) and the end surface of the fixed-end universal joint (1). The process method of the automobile wear-resistant gasket assembly comprises the following steps. Step 1, the wear-resistant gasket assembly (2) is placed in a carbonitriding furnace. Step 2, a molten droplet medium is added to the carbonitriding furnace, and nitrogen N2 is synchronously introduced. Step 3, the wear-resistant gasket assembly (2) is subjected to low-temperature nitrocarburizing treatment. Step 4, after the wear-resistant gasket assembly (2) is subjected to nitrocarburizing treatment for 4-8 hours, fast cooling is performed. Step 5, the wear-resistant gasket assembly (2) is combined with elastic fixing clamps, and the included angle between the central axes of two adjacent elastic fixing clamps is 120°. Step 6, the two side end surfaces of the wear-resistant gasket assembly (2) are assembled with the fixed-end universal joint (1) and the hub bearing (4) of the automobile drive shaft. Step 7, three elastic fixing clamp feet are arranged on the inner circumference of the wear-resistant gasket to form an elastic inner circle for clamping the abutting position of the universal joint shaft (3) of the fixed-end universal joint (1) and rotating. Step 8, the universal joint (1) is connected with the hub spline through the spline (5) and locked through the locking nut (7), the hub bearing (4) is in interference fit with the hub, and no abnormal sound is generated during rotation; when the universal joint (1) is subjected to instantaneous torque, the torque is transmitted to the hub through the spline (5), and at this time, the adhesion friction is generated at the abutting position between the hub bearing (4) and the end surface of the fixed-end universal joint (1). The automobile wear-resistant gasket assembly takes low-carbon alloy steel Q235 as a base body, and the Q235 is subjected to nitrocarburizing heat treatment, so that a compound layer is generated on the surface of the wear-resistant gasket after treatment, the thickness of the layer is 2-25 μm, and the hardness HV is 1000-1500.

2. A process for making a wear pad assembly for an automobile as claimed in claim 1, wherein, The hub bearing (4) is in interference fit with the hub.

3. A process for making a wear pad assembly for an automobile as recited in claim 1, wherein, The wear-resistant gasket assembly (2) is made of low-carbon alloy steel cold-rolled plate material.

4. A process for making a wear pad assembly for an automobile as recited in claim 1, wherein, The thickness of the wear-resistant gasket assembly (2) ranges from 0.2 mm to 3.0 mm.

5. The process for making a wear pad assembly for an automobile as defined in claim 1 wherein, The connecting position of the locking nut (7) and the hub is provided with a gasket (6).

6. The process for making a wear pad assembly for an automobile as described in claim 1, wherein, The wear-resistant gasket assembly (2) is subjected to low-temperature nitrocarburizing at temperatures of 530℃, 550℃, 570℃ and 600℃, respectively, and the nitrocarburizing treatment time is 2h, 4h, 6h and 8h, respectively.

7. The process for making a wear pad assembly for an automobile as described in claim 1 wherein, The medium is at least one of kerosene, ethanol and acetone.

Images