A processing equipment for the end face spline of a hub bearing

Abstract

The present invention discloses a processing equipment for the end face spline of a wheel hub bearing, comprising a rotary rivet head for riveting out a spline on the end face of an inner flange of the wheel hub bearing; a rivet head mounting seat, one end of the rivet head mounting seat being rotatably connected to the rotary rivet head, and the other end being connected to a lifting mechanism; a positioning tool located below the rotary rivet head, the positioning tool being fixedly connected to the inner flange of the wheel hub bearing; a rotary drive mechanism, the rotary drive mechanism being connected to the positioning tool, and the rotary drive mechanism driving the inner flange of the wheel hub bearing to rotate via the positioning tool; the present invention optimizes the spline forming method, adopts a method of driving the inner flange of the wheel hub bearing to rotate and the rotary rivet head to passively rotate, and only needs to control the downward feed amount of the rotary rivet head, and under the control of the equipment software, it is convenient to realize the reversing rotation of the inner flange of the wheel hub bearing, so as to obtain a high-precision spline tooth shape and ensure the consistency of the spline parameters.

Description

Technical Field

[0001] The invention relates to the technical field of automobile wheel hub bearing unit manufacturing, and in particular to a processing equipment for wheel hub bearing end face splines. Background Art

[0002] Wheel hub bearings are key components in automobiles that carry loads and provide precise guidance for wheel rotation. With the rapid development of the automotive industry in recent years, increasingly higher requirements have been placed on wheel hub bearings in terms of lightweight, miniaturization, low noise, and high reliability. Traditional wheel hub bearings can no longer fully meet market demand and will eventually be phased out by the market. A face spline wheel hub bearing product with advantages such as lightweight, high torque transmission capacity, easy installation and maintenance, and high reliability is attracting widespread attention and is being developed. It has a broad market potential, especially in the field of new energy vehicles. Currently, traditional rotary riveting equipment is commonly used in conjunction with a rivet head with a toothed structure to rivet the face spline tooth profile on the riveted end face of the inner flange of the wheel hub bearing.

[0003] For example, the invention patent with publication number CN107735193B discloses a method for riveting and forming the end face spline of a hub bearing. A rivet head with a tooth-shaped structure revolves around the central axis of the bearing. The hub bearing is fixed on a stage, and the stage reciprocates periodically in the vertical direction to finally process the end face spline tooth shape.

[0004] Although the existing technical solutions can also realize the pressing of splines on the flange end face of the hub bearing, the transmission mechanism required to drive the rotary rivet head to revolve and press down is relatively complex, and the downward force required is also relatively large, resulting in a limited selection range, a large equipment footprint, and being relatively bulky; secondly, this method has high requirements for the control of the reciprocating motion of the stage in the vertical direction, which is not conducive to ensuring the accuracy of the end face spline tooth profile. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the prior art and provide a processing equipment for the end face spline of a hub bearing, which optimizes the spline forming method and adopts the method of driving the inner flange of the hub bearing to rotate and the rivet head to passively rotate. It only needs to control the downward feed amount of the rivet head, and under the control of the equipment software, it is convenient to realize the reversing rotation of the inner flange of the hub bearing to obtain a high-precision spline tooth shape and ensure the consistency of the spline parameters.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A processing equipment for the end face spline of a wheel hub bearing includes a rotary rivet head for riveting out splines on the end face of the inner flange of the wheel hub bearing; a rivet head mounting seat, one end of which is rotatably connected to the rotary rivet head and the other end of which is connected to a lifting mechanism; a positioning tool located below the rotary rivet head and fixedly connected to the inner flange of the wheel hub bearing; and a rotary drive mechanism, the rotary drive mechanism being connected to the positioning tool and driving the inner flange of the wheel hub bearing to rotate via the positioning tool.

[0008] Furthermore, the rivet head mounting seat includes a shell component, a bearing and a rotating shaft. The shell component is fixedly connected to the lifting block of the lifting mechanism. The shell component is connected to the outer ring of the bearing. The inner ring of the bearing is connected to the rotating shaft. The rotating shaft is connected to the rivet head.

[0009] Furthermore, the lifting mechanism includes a lifting drive motor, the lifting drive motor is connected to a vertically arranged screw rod, a lifting block is sleeved on the screw rod, and the lifting block is threadedly engaged with the screw rod; the lifting block is connected to the rivet head mounting seat.

[0010] Furthermore, the included angle between the axis of the rivet head and the axis of the inner flange of the hub bearing is 15 to 30 degrees.

[0011] Furthermore, it includes a measuring device arranged on one side of the positioning tool, the measuring device includes a fixed platform, the fixed platform is connected to the horizontal displacement frame through a horizontal guide rail, the fixed platform is connected to a horizontal cylinder, the horizontal cylinder pushes the horizontal displacement frame to move linearly along the horizontal guide rail, one side of the horizontal displacement frame is connected to the vertical displacement frame through a vertical guide rail, the horizontal displacement frame is connected to a vertical cylinder, the vertical cylinder pushes the vertical displacement frame to move linearly along the vertical guide rail; a pre-riveting measuring tool and a post-riveting measuring tool are provided on the vertical displacement frame; the horizontal displacement frame is provided with a displacement sensor for detecting the descending displacement of the pre-riveting measuring tool and the post-riveting measuring tool.

[0012] Furthermore, it includes an atomizing spraying device, which includes an oil storage tank, an atomizer, a magnetic kit, a magnet base and a spray head; the magnetic kit is fixedly connected to the rivet head mounting base, the magnetic kit is magnetically connected to the magnetic base, the magnetic base is fixedly connected to the spray head, the spray head is connected to the atomizer through a conduit, and the atomizer is connected to the oil storage tank.

[0013] The present invention also provides a processing method, comprising the following spline processing method steps:

[0014] S1. Use the riveting equipment from the previous process to flange the riveted interface of the inner flange of the hub bearing until it contacts the end face of the inner ring, so that the hub bearing is pre-riveted and formed;

[0015] S2, loading the pre-riveted hub bearing onto the positioning fixture, and the lifting mechanism drives the rivet head to move vertically downward, so that the teeth of the rivet head are in proximity to the rivet interface of the inner flange of the hub bearing;

[0016] S3, the rivet head is continuously and slowly lowered, and at the same time, the rotary drive mechanism drives the inner flange of the hub bearing to rotate according to a set forward and reverse rotation cycle through the positioning fixture;

[0017] S4. After the rivet head descends to a predetermined height, the lifting mechanism drives the rivet head back to the standby position, and the wheel hub bearing end face spline processing is completed.

[0018] The measurement method includes the following steps:

[0019] S101, selecting two pre-riveted wheel hub bearings as standard parts, and making pre-riveting measurement tooling and post-riveting measurement tooling corresponding to the standard parts;

[0020] S102, after loading the standard component 1 onto the positioning fixture, the measuring device advances to position Y1, causing the pre-riveting measuring fixture to descend until it contacts the flange of the inner flange riveted interface of the hub bearing, and using a displacement sensor to measure the descending distance L1 of the pre-riveting measuring fixture;

[0021] S103, processing the end face spline of the inner flange riveted interface of the second standard part, and manufacturing a corresponding post-riveting measurement tool according to the end face spline of the inner flange riveted interface of the second standard part;

[0022] S104, the measuring device moves to the Y2 position, lowers the post-riveting measuring tool until it is well engaged with the end face spline of the inner flange riveted interface of the hub bearing, and uses a displacement sensor to measure the lowering distance L2 of the post-riveting measuring tool;

[0023] S105, placing other hub bearings on the positioning fixture, respectively measuring the descending distance L1' of the corresponding pre-riveting measuring fixture, and automatically compensating the descending feed amount of the corresponding lifting mechanism according to the difference between L1' and L1; after processing, measuring the descending distance L2' of the corresponding post-riveting measuring fixture (95), using the L2 value as the end face spline parameter standard of the standard part, and calibrating the end face splines of other hub bearings, controlling |L2'-L2| within the set range, and ensuring the consistency of the end face spline tooth profile parameters.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The spline forming method has been optimized. The inner flange of the hub bearing is driven to rotate, and the rivet head is passively rotated. It only needs to control the downward feed of the rivet head. Under the control of the equipment software, the reversing rotation of the inner flange of the hub bearing can be easily realized to obtain a high-precision spline tooth shape and ensure the consistency of the spline parameters.

[0026] 2. The wheel hub bearing end face spline forming is divided into two processes: pre-riveting forming and spline tooth forming. This avoids the problem in the existing technology that only relies on riveting with a rotary rivet head once, which easily causes the wheel hub bearing to be subjected to large forces, resulting in large deformation of the inner ring and even cracks on the tooth bottom of the outer edge of the end face spline. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the processing equipment of the present invention;

[0028] Figure 2 This is a left side view of a processing equipment for a hub bearing end face spline according to the present invention;

[0029] Figure 3 It is a front view of the measuring device of the present invention;

[0030] Figure 4 This is a front view of the rivet head mounting base of the present invention;

[0031] Figure 5 A three-dimensional diagram of a rivet head according to the present invention;

[0032] Figure 6 A perspective view of the hub bearing of the present invention;

[0033] In the figure: 1. Lifting drive motor; 2. Screw; 3. Rivet head mounting seat; 31. Shell member; 32. Rotating shaft; 33. Magnetic kit; 4. Riveting head; 5. Wheel hub bearing; 6. Rotary drive mechanism; 7. Positioning tooling; 8. Atomizing spray device; 9. Measuring device; 91. Vertical cylinder; 92. Displacement sensor; 93. Pre-riveting measurement tooling; 94. Horizontal cylinder; 95. Post-riveting measurement tooling. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "top", "bottom", "inside", "outside", "horizontal", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0036] like Figures 1 to 6 As shown, a processing equipment for the end face spline of a hub bearing includes a rotary rivet head 4, which is used to rivet out a spline on the end face of the inner flange of the hub bearing; a rivet head mounting seat 3, one end of the rivet head mounting seat 3 is rotatably connected to the rotary rivet head 4, and the other end is connected to a lifting mechanism; a positioning tool 7, which is located below the rotary rivet head 4 and is fixedly connected to the inner flange of the hub bearing so that the end face of the inner flange of the hub bearing faces upward; a rotary drive mechanism 6, which is connected to the positioning tool 7 and drives the inner flange of the hub bearing to rotate through the positioning tool 7.

[0037] The processing equipment of this solution is used to process the hub bearings that have been pre-riveted. The riveting equipment in the previous process will flange the riveted interface of the inner flange of the hub bearing until it contacts the end face of the inner ring, which is pre-riveting.

[0038] The positioning tool 7 is used to clamp and fix the inner flange of the hub bearing. The rotary drive mechanism 6 drives the positioning tool to rotate, thereby driving the inner flange of the hub bearing to rotate; the lifting mechanism drives the rivet head mounting seat 3 to move downward, thereby driving the rivet head 4 to feed downward. When the rivet head 4 contacts the inner flange of the hub bearing, the inner flange of the hub bearing rotates, and the rivet head 4 is passively rotated during the downward feeding process, thereby riveting a spline on the end face of the inner flange of the hub bearing.

[0039] Among them, the positioning tool 7 is a product of existing technology and is relatively easy to implement according to functional requirements, so it is not specifically limited here; the rotation drive mechanism 6 uses a motor as a driving part and a belt as a transmission part to make the positioning tool 7 rotate, which is also relatively easy to implement and is not specifically limited here.

[0040] The existing technology generally adopts a solution in which the rivet head revolves around the end face of the inner flange of the hub bearing. Although this solution can also realize the pressing of splines on the end face of the inner flange of the hub bearing, the transmission mechanism required to drive the rivet head to revolve and press down is relatively complex, and the downward force required is also relatively large, resulting in a limited selection range, a large equipment footprint, and being relatively bulky. Compared with this solution, the present solution optimizes the spline forming method, adopts a method in which the inner flange of the hub bearing is driven to rotate and the rivet head 4 is passively rotated. It only needs to control the downward feed amount of the rivet head 4, and under the control of the equipment software, it is convenient to realize the reversing rotation of the inner flange of the hub bearing to obtain a high-precision spline tooth shape and ensure the consistency of the spline parameters.

[0041] The rivet head mounting base 3 includes a housing member 31, a bearing, and a rotating shaft 32. The housing member 31 is fixedly connected to the lifting block of the lifting mechanism. The housing member 31 is connected to the outer ring of the bearing, and the inner ring of the bearing is connected to the rotating shaft 32. The rotating shaft 32 is connected to the rivet head 4. The rivet head is connected to the bearing via the rotating shaft 32, which allows the rivet head to be passively rotated. By setting the tilt angle of the rotating shaft 32, the tilt angle of the rivet head 4 can be controlled.

[0042] The lifting mechanism includes a lifting drive motor 1 connected to a vertically mounted lead screw 2, onto which a lifting block is sleeved. The lifting block is threadedly engaged with the lead screw 2 and is provided with a guide rod to limit the lifting block's position and prevent rotation during descent. The lifting block is connected to a rivet head mounting base 3. The horizontally arranged lifting drive motor 1 drives the lead screw 2 through a set of bevel gears, thereby driving the rivet head mounting base 3 mounted on the lead screw 2 up and down, achieving extrusion processing of the end face spline tooth profile of the wheel hub bearing 5 and controlling the end face spline tooth depth.

[0043] The angle between the axis of the rivet head 4 and the axis of the inner flange of the wheel hub bearing is 15° to 30°. The larger the angle θ, the smaller the local contact area between the rivet head 4 mounted on the rotating shaft 32 and the riveted surface of the wheel hub bearing 5. Under the same feed rate conditions, the required downward force is reduced, and the pressure applied to the inner ring is also reduced. However, if the angle θ is too large, it is likely to interfere with the workpiece. Considering the wheel hub bearing product structure and equipment selection requirements, selecting an angle θ between 15° and 30° helps reduce the force on the riveted end face of the wheel hub bearing, minimizes radial expansion of the inner ring, avoids the selection of high-power upper and lower drive motors, and saves equipment costs.

[0044] This processing equipment also includes a measuring device 9 arranged on one side of the positioning tool 7. The measuring device 9 includes a fixed table, which is connected to the horizontal displacement frame through a horizontal guide rail. The fixed table is connected to a horizontal cylinder 94. The horizontal cylinder 94 pushes the horizontal displacement frame to move linearly along the horizontal guide rail. One side of the horizontal displacement frame is connected to the vertical displacement frame through a vertical guide rail. The horizontal displacement frame is connected to a vertical cylinder 91. The vertical cylinder 91 pushes the vertical displacement frame to move linearly along the vertical guide rail; a pre-riveting measuring tool 93 and a post-riveting measuring tool 95 are provided on the vertical displacement frame; the horizontal displacement frame is provided with a displacement sensor 92 for detecting the descending displacement of the pre-riveting measuring tool 93 and the post-riveting measuring tool 95.

[0045] The pre-riveting measuring fixture 93 descends until it is in close contact with the riveted interface of the inner flange of the hub bearing. The difference between its descending amount and the standard part one is used as the adaptive supplementary amount of the lifting mechanism feed amount to improve the processing accuracy; the post-riveting measuring fixture 95 descends until it engages with the riveted end face spline. The descending amount of the post-riveting measuring fixture 95 is subtracted from the detection result of the standard part two, which is the end face spline tooth profile processing error. The error is controlled within the set range to ensure the consistency of the end face spline tooth profile parameters.

[0046] Specifically, the post-riveting measurement fixture 95 has a tooth structure equal to the end face spline and is designed to be installed in a floating rotation manner, so as to facilitate complete engagement with the end face spline to be measured.

[0047] This processing equipment also includes an atomizing spraying device 8, which includes an oil storage tank, an atomizer, a magnetic kit 33, a magnet base and a spray head; the magnetic kit 33 is fixedly connected to the rivet head mounting base 3, the magnetic kit 33 is magnetically connected to the magnetic base, the magnetic base is fixedly connected to the spray head, the spray head is connected to the atomizer through a conduit, and the atomizer is connected to the oil storage tank.

[0048] The magnetic base is magnetically attached to the magnetic assembly 33, allowing the magnetic base's rotation angle to be adjusted arbitrarily. Since the spray head is mounted on the magnetic base, the spray head's spray direction can be flexibly adjusted. Furthermore, the use of magnetic attachment facilitates disassembly, maintenance, and cleaning of the magnetic base. During the end spline tooth forming process, the spraying device atomizes the liquid lubricant, which is evenly sprayed onto the riveted surfaces of the rivet head 4 and the hub bearing as the rivet head rotates, effectively reducing wear on the rivet head and extending its life. The timing and flow rate of the atomized spray can be precisely adjusted through a control program to avoid excess lubricant residue on the end spline teeth, improving product cleanliness and facilitating subsequent packaging operations.

[0049] The present invention also provides a processing method, comprising the following spline processing method steps:

[0050] S1. Use the riveting equipment from the previous process to flange the riveted interface of the inner flange of the hub bearing until it contacts the end face of the inner ring, thereby pre-riveting the hub bearing. The riveting equipment from the previous process is commonly used equipment in existing mature cold pressing processes and can be easily implemented by those skilled in the art based on functional requirements, and is not particularly limited here.

[0051] S2, loading the pre-riveted hub bearing onto the positioning fixture 7, and the lifting mechanism drives the rivet head 4 to move vertically downward, so that the teeth of the rivet head 4 are close to the rivet interface of the inner flange of the hub bearing;

[0052] S3, the rivet head 4 is slowly lowered continuously, and at the same time, the rotation drive mechanism 6 drives the inner flange of the hub bearing to rotate according to the set forward and reverse rotation cycle through the positioning fixture 7;

[0053] S4. After the rivet head 4 descends to a predetermined height, the lifting mechanism drives the rivet head 4 back to the standby position, and the wheel hub bearing end face spline processing is completed.

[0054] The measurement method includes the following steps:

[0055] S101. Select two pre-riveted wheel hub bearings as standard parts and make a pre-riveting measurement tool 93 corresponding to the standard parts. The pre-riveting measurement tool 93 can be easily implemented as long as it can fit in and abut against the inner flange riveted interface, without any special structural restrictions.

[0056] S102: After loading the standard component 1 onto the positioning fixture 7, the measuring device advances to the Y1 position, lowering the horizontal displacement frame fixture 93 for pre-riveting measurement until it contacts the flange of the inner flange riveted interface of the hub bearing. The displacement sensor is used to measure the descending distance L1 of the pre-riveting measurement fixture 93;

[0057] S103, processing the end face spline of the inner flange riveted interface of the second standard part, and manufacturing the corresponding post-riveting measurement tool 95 according to the end face spline of the inner flange riveted interface of the second standard part;

[0058] S104: The horizontal displacement frame of the measuring device advances to position Y2, allowing the post-riveting measuring tool 95 to descend until it is in good meshing engagement with the end face spline of the inner flange riveted interface of the wheel hub bearing. The displacement sensor is used to measure the descending distance L2 of the post-riveting measuring tool 95. Specifically, the rotary drive mechanism 6 can drive the wheel hub bearing to rotate back and forth at a small angle so that the post-riveting measuring tool 95 is in good meshing engagement with the end face spline tooth profile.

[0059] S105. Place other wheel hub bearings on the positioning fixture 7 and measure the corresponding descending distance L1' of the pre-riveting measuring fixture 93. The controller automatically compensates the descending feed amount of the corresponding lifting mechanism according to the difference between L1' and L1. After processing, measure the descending distance L2' of the corresponding post-riveting measuring fixture 95. Use the L2 value as the end face spline parameter standard of the standard part to calibrate the end face splines of other wheel hub bearings and control |L2'-L2| within the set range to ensure the consistency of the end face spline tooth profile parameters.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A processing equipment for the end face spline of a hub bearing, wherein the processing equipment is used to process a hub bearing that has been pre-riveted. The riveting equipment in the previous process flanging the riveted interface of the hub bearing inner flange until it contacts the inner ring end face is pre-riveted; characterized in that: include: A rotary riveting head (4) is used for riveting a spline out of the inner flange end face of the hub bearing; A rivet head mounting seat (3), one end of which is rotatably connected to the rotary rivet head (4), and the other end of which is connected to a lifting mechanism; A positioning tool (7) is located below the rivet head (4), and the positioning tool (7) is fixedly connected to the inner flange of the wheel hub bearing; A rotary drive mechanism (6), the rotary drive mechanism (6) being connected to the positioning fixture (7), and the rotary drive mechanism (6) driving the inner flange of the hub bearing to rotate via the positioning fixture (7); The rotary rivet head (4) has a tooth portion for contacting the rivet interface of the inner flange of the hub bearing; The measuring device (9) comprises a fixed platform, the fixed platform is connected to a horizontal displacement frame via a horizontal guide rail, the fixed platform is further connected to a horizontal cylinder (94), the horizontal cylinder (94) pushes the horizontal displacement frame to move linearly along the horizontal guide rail, one side of the horizontal displacement frame is connected to a vertical displacement frame via a vertical guide rail, the horizontal displacement frame is further connected to a vertical cylinder (91), the vertical cylinder (91) pushes the vertical displacement frame to move linearly along the vertical guide rail; a pre-riveting measuring tool (93) and a post-riveting measuring tool (95) are provided on the vertical displacement frame; the horizontal displacement frame is further provided with a displacement sensor (92) for detecting the descending displacement of the pre-riveting measuring tool (93) and the post-riveting measuring tool (95); The measuring method of the measuring device (9) comprises the following steps: S101, selecting two pre-riveted hub bearings as standard parts, making a pre-riveting measuring tool (93) and a post-riveting measuring tool (95) corresponding to the standard parts, wherein the pre-riveting measuring tool (93) can cooperate with the inner flange riveting interface; S102, after loading the standard part 1 onto the positioning fixture (7), the horizontal displacement frame of the measuring device advances to the Y1 position, causing the pre-riveting measuring fixture (93) to descend until it contacts the flange of the inner flange riveted interface of the hub bearing, and using a displacement sensor (92) to measure the descending distance L1 of the pre-riveting measuring fixture (93); S103, processing the end face spline of the inner flange riveted interface of the standard part 2, and making the corresponding post-riveting measurement tooling (95) according to the end face spline of the inner flange riveted interface of the standard part 2; S104, the horizontal displacement frame of the measuring device moves forward to the Y2 position, so that the post-riveting measuring fixture (95) is lowered until it is well engaged with the end face spline of the inner flange riveted interface of the hub bearing, and the displacement sensor (92) is used to measure the lowering distance L2 of the post-riveting measuring fixture (95); S105, placing the other wheel hub bearings except the standard parts on the positioning fixture (7), respectively measuring the descending distance L1' of the corresponding pre-riveting measuring fixture (93), and the controller automatically compensates the descending feed amount of the corresponding lifting mechanism according to the difference between L1' and L1; after processing, measuring the descending distance L2' of the corresponding post-riveting measuring fixture (95), taking the L2 value as the end face spline parameter standard of the standard parts, and calibrating the end face splines of other wheel hub bearings, controlling |L2'-L2| within the set range, and ensuring the consistency of the end face spline tooth profile parameters.

2. The processing equipment for the wheel hub bearing end face spline according to claim 1, characterized in that: The rivet head mounting seat (3) comprises a housing component (31), a bearing and a rotating shaft (32); the housing component is fixedly connected to the lifting block of the lifting mechanism; the housing component is connected to the outer ring of the bearing; the inner ring of the bearing is connected to the rotating shaft (32); and the rotating shaft (32) is connected to the rotary rivet head (4).

3. The processing equipment for the wheel hub bearing end face spline according to claim 1, characterized in that: The lifting mechanism comprises a lifting drive motor (1), the lifting drive motor (1) is connected to a vertically arranged screw rod (2), a lifting block is sleeved on the screw rod (2), and the lifting block is threadedly engaged with the screw rod (2); the lifting block is connected to the rivet head mounting seat (3).

4. The processing equipment for the wheel hub bearing end face spline according to claim 1, characterized in that: The included angle between the axis of the rotary riveting head (4) and the axis of the inner flange of the hub bearing is 15 to 30 degrees.

5. The processing equipment for the wheel hub bearing end face spline according to claim 1, characterized in that: It comprises an atomizing spraying device (8), which comprises an oil storage tank, an atomizing machine, a magnetic kit, a magnet base and a spray head; The magnetic kit is fixedly connected to the rivet head mounting seat (3), the magnetic kit is connected to the magnet base through magnetic adsorption, the magnet base is fixedly connected to the spray head, the spray head is connected to the atomizer through a conduit, and the atomizer is connected to the oil storage tank.

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