A tool for positioning an integrated wheel hub and a lock ring and a processing and segmentation process thereof

Abstract

The present invention relates to a tooling for positioning an integrated wheel hub and a lock ring and a processing and segmentation process thereof. The present invention comprises a hydraulic three-jaw hydraulic chuck and a base surface adjustment disk. The three-jaw hydraulic chuck comprises a three-jaw pulling arm and an embedded pressure jaw connected to the three-jaw pulling arm. A radial locking bolt and an axial locking bolt are connected between the three-jaw pulling arm and the embedded pressure jaw. The base surface adjustment disk is connected to a base pad. The outer end of the base pad is provided with an air avoidance structure. The inner rim of the wheel hub is fixed to the upper end face of the base pad by the embedded pressure jaw. The base surface adjustment disk is connected to a base screw core rod. The screw core rod is threadedly connected to a center shaft. The center shaft is axially connected to a center positioning core. The center positioning core cooperates with the center hole of the wheel hub. The present invention relates to a tooling for positioning an integrated wheel hub and a lock ring and a processing and segmentation process thereof. The tooling is used to clamp the heat-treated integrated blank at one time. The size of the lock ring is effectively guaranteed mainly by cutting with an integrated diamond cutter and a hook groove cutter, thereby improving the product qualification rate and reducing the production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel manufacturing, and in particular to a tool for positioning an integrated wheel hub and a lock ring and a processing and segmenting process thereof. Background Art

[0002] In the processing and manufacturing of cast aluminum alloy wheel lock rings, since the front of the lock ring is a non-machined casting surface, the existing horizontal casting surface deformation is about ±0.4mm. The rest of the lock ring is a surface that requires fine processing. The parallelism requirement for the front and back surfaces is ≤0.2mm, and the flatness requirement is <0.1mm. The flip reference plane is the casting surface. After the lock ring is processed, the current inspection pass rate is low, affecting product quality. Summary of the Invention

[0003] To this end, the technical problem to be solved by the present invention is to provide a positioning tool for an integrated wheel hub and lock ring and a processing and segmentation process thereof, which can overcome the problem in the prior art that the qualified rate of the lock ring after processing is low, thereby affecting product quality.

[0004] In order to solve the above technical problems, the present invention provides a tool for positioning an integrated wheel hub and a locking ring, including: a hydraulic three-jaw hydraulic chuck and a base surface adjustment disk. The three-jaw hydraulic chuck includes a three-jaw pulling arm and an embedded pressure jaw connected to the three-jaw pulling arm. A radial locking bolt and an axial locking bolt are connected between the three-jaw pulling arm and the embedded pressure jaw. The base surface adjustment disk is connected to a base pad. The outer end of the base pad is provided with an air avoidance structure. The inner rim of the wheel hub is fixed to the upper end face of the base pad by the embedded pressure jaw. The base surface adjustment disk is connected to a base screw core rod. The screw core rod is threadedly connected to a center shaft. The center shaft is axially connected to a center positioning core, and the center positioning core cooperates with the center hole of the wheel hub.

[0005] In one embodiment of the present invention, limit blocks connected to the base adjustment disk are provided at both side ends of the central shaft, and a displacement blocking block is provided at the lower end of the central shaft. When the central shaft moves axially, it is limited by the contact between the displacement blocking block and the limit block.

[0006] In one embodiment of the present invention, a side end of the limit block is connected to a limit locking bolt, and the limit locking bolt is used to lock the central axis and the limit block.

[0007] In one embodiment of the present invention, a protective jacket is provided on the top of the embedded pressing jaw.

[0008] In one embodiment of the present invention, a positioning locking bolt is connected to one axial end of the central shaft, the central positioning core is inserted into one axial end of the central shaft and fixed by the positioning locking bolt, and an adjustment rotation plane is formed between the central positioning core and the central shaft.

[0009] The present invention also provides a processing and segmenting process for an integrated wheel hub and a lock ring, using a tool for positioning the integrated wheel hub and the lock ring, the process comprising the following steps:

[0010] S1. Melting: Melting the aluminum alloy ingot to obtain aluminum liquid, which is stored in a holding chamber; the melting temperature is 705-740°C, the time is 0.5-3.5 hours, and the holding chamber temperature is 785-930°C;

[0011] S2. After refining and degassing, the molten aluminum is cast into a heated metal mold to obtain a one-piece blank; the casting temperature is 695-720°C, the casting time is 18-30 seconds, and the cooling method is water mist cooling, air cooling, or combined cooling, the cooling temperature is 5-20°C, and the cooling time is 100-150 seconds; after natural cooling, the mold is demolded. The total time from casting to demolding of the one-piece blank is 180-320 seconds;

[0012] S3. Heat treatment: firstly subject the one-piece blank to solution treatment at 535-547℃ for 5.5-6.5 hours, then place it in water ≥40℃ within 30 seconds after solution treatment, quench for ≥150 seconds, and then age treatment at 120-145℃ for 2.5-4.5 hours to make the hardness reach HB≥58;

[0013] S4, primary turning: The heat-treated one-piece blank is clamped with a three-jaw hydraulic chuck, and the inner rim, outer rim and center hole are turned on the machine tool;

[0014] S5. Using the center hole and flange plane as reference, drill valve holes, connecting screw holes and PCD holes on the one-piece blank using a CNC machining center;

[0015] S6, secondary turning: adjust the base block to the lower end surface of the inner rim of the hub, and rough-turn the lock ring and the outer surface of the hub on the machine tool after the one-piece blank after the primary turning;

[0016] S7. Semi-finishing: Using a precision-cutting diamond cutter, machining from the outer wall of the lock ring toward the inner circumference in the axial direction until the wall thickness is 1.5-2.5 mm. The rotation speed of the precision-cutting diamond cutter is 500-1200 rpm and the cutting rate is 0.05-0.2 mm / r. The precision-cutting diamond cutter includes a diamond cutter shank and a diamond cutter blade connected to the end of the diamond cutter shank.

[0017] S8, finishing: using a precision cutting integrated diamond cutter to continue machining from the outer wall end of the lock ring to the inner circumference in the axial direction until the wall thickness remaining is 0.2-0.5mm, the rotation speed of the precision cutting integrated diamond cutter is: 500-1200r / min, and the cutting rate is: 0.05-0.2mm / r;

[0018] S9. Split the lock ring: Use a hook groove cutter to process from the inner side wall end of the lock ring to the outer circle direction, wherein the hook groove cutter includes a hook groove cutter rod and a hook groove cutter blade. The front end of the hook groove cutter rod is provided with a 360° rotatable displacement sleeve. The end of the displacement sleeve is locked to the hook groove cutter rod by a hook groove cutter locking bolt. The displacement sleeve is circumferentially extended with a retaining ring. The axis of the outer circumferential plane of the front end of the displacement sleeve forms an angle of 80-90° with the vertical plane of the retaining ring. The hook groove cutter blade Cut along an upward 45° oblique line at the inner wall end of the lock ring. When the hook groove cutter hooks to a processing allowance of less than 0.5mm, the rotation speed of the hook groove cutter is: 20-80r / min, and the cutting rate of the hook groove cutter is: 0.05-0.25mm / r. At the same time, the hook groove cutter is rapidly lifted 5-10mm in the circumferential direction and retracted 1-3mm axially. The split and finely machined lock ring is made to fall on the displacement sleeve and the retaining ring by inertia to obtain an integrated wheel hub lock ring and wheel hub.

[0019] In one embodiment of the present invention, in steps S6-S9, the radial runout of the three-jaw hydraulic chuck is in the range of 0.025-0.06 mm, the axial runout is ≤0.08 mm, the interference fit of the embedded pressure jaws is in the range of 2.5-3.5 mm, and the locking force of the three-jaw pull arm is in the range of 25-38 kg / cm 2 .

[0020] In one embodiment of the present invention, in steps S6-S9, the circumferential contact widths between the base pad and the inner rim of the hub, and between the embedded pressing claw and the inner rim of the hub, are 3-10 mm.

[0021] In one embodiment of the present invention, the diamond knife blade is made of PCD diamond, the diamond knife shank is made of 35 or 42 chromium-molybdenum alloy shank, and the side surface of the diamond knife shank is provided with a cooling and lubrication groove.

[0022] In one embodiment of the present invention, the diamond knife blade is arranged in the middle of the diamond knife rod, the top of the diamond knife blade is provided with a 5±1° bevel, and the left and right side ends of the diamond knife blade are inclined inward by 5-8° to form an avoidance structure.

[0023] The above technical solution of the present invention has the following advantages over the prior art:

[0024] The present invention discloses a tooling for positioning an integrated wheel hub and a lock ring and a processing and segmentation process thereof. The tooling clamps the heat-treated integrated blank at one time, and the precision cutting of the integrated diamond cutter and the hook groove cutter effectively ensures the size of the lock ring, thereby improving the product qualification rate and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0026] Figure 1 It is a schematic diagram of the structure of the integrated wheel hub and lock ring positioning tooling used in the present invention.

[0027] Figure 2 yes Figure 1 A partial enlarged schematic diagram.

[0028] Figure 3 It is a schematic structural diagram of an outer spherical knife of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the precision cutting integrated diamond knife of the present invention.

[0030] Figure 5 yes Figure 4 A partial enlarged schematic diagram.

[0031] Figure 6 It is a schematic diagram of the structure of the diamond knife blade of the present invention.

[0032] Figure 7 It is a schematic structural diagram of a hook groove knife of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of one side of the lock ring.

[0034] Figure 9 yes Figure 8 AA cross-sectional view.

[0035] Figure 10 This is a schematic diagram of the structure on the other side of the lock ring.

[0036] Description of the accompanying drawings: 100, diamond knife for cutting precision; 110, diamond knife shank; 120, diamond knife blade; 130, bevel; 140, slope; 150, cooling and lubricating groove; 200, hook groove knife; 210, hook groove knife shank; 220, hook groove knife blade; 230, displacement sheath; 240, retaining ring; 250, hook groove knife locking bolt; 300, outer spherical knife; 410, outer diameter of locking ring; 420, inner pressure surface of locking ring; 430, stop surface of inner groove of locking ring; 440, lock Ring locking fits the plane; 450, inner diameter casting surface of the locking ring; 1, base adjustment disk; 2, three-jaw pull arm; 3, embedded pressure claw; 4, base pad; 41, air avoidance structure; 5, inner rim of the hub; 6, base screw core rod; 7, center axis; 8, center positioning core; 9, center hole of the hub; 10, limit block; 11, displacement blocking block; 12, limit locking bolt; 13, protective jacket; 14, positioning locking bolt; 15, adjustment rotation plane; 16, radial locking bolt; 17, axial locking bolt. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0038] Reference Figure 1 As shown, the present invention is a tool for positioning an integrated wheel hub and a locking ring, comprising: a hydraulic three-jaw hydraulic chuck, a base surface adjustment disk 1, the three-jaw hydraulic chuck comprises a three-jaw pulling arm 2 and an embedded pressure jaw 3 connected to the three-jaw pulling arm 2, a radial locking bolt 16 and an axial locking bolt 17 are connected between the three-jaw pulling arm 2 and the embedded pressure jaw 3, the base surface adjustment disk 1 is connected to a base pad 4, the outer end of the base pad 4 is provided with an air avoidance structure 41, the inner rim 5 of the wheel hub is fixed to the upper end surface of the base pad 4 through the embedded pressure jaw 3, the base surface adjustment disk 1 is connected to a base screw core rod 6, the screw core rod is threadedly connected to a center shaft 7, the center shaft 7 is axially connected to a center positioning core 8, and the center positioning core 8 cooperates with the center hole 9 of the wheel hub.

[0039] Specifically, both side ends of the central shaft 7 are provided with limit blocks 10 connected to the base adjustment disk 1, and the lower end of the central shaft 7 is provided with a displacement blocking block 11. When the central shaft 7 moves axially, it is limited by the contact between the displacement blocking block 11 and the limit block 10.

[0040] Specifically, a side end of the limit block 10 is connected to a limit locking bolt 12 , and the limit locking bolt 12 is used to lock the central shaft 7 and the limit block 10 .

[0041] Specifically, a protective jacket 13 is provided at the top of the embedded pressing jaw 3 .

[0042] Specifically, a positioning locking bolt 14 is connected to one axial end of the central shaft 7 , the central positioning core 8 is inserted into one axial end of the central shaft 7 and fixed by the positioning locking bolt 14 , and an adjustment rotation plane 15 is formed between the central positioning core 8 and the central shaft 7 .

[0043] The present invention also provides a process for processing an integrated aluminum wheel hub and a lock ring. Utilizing the processing tooling for the integrated aluminum wheel hub and the lock ring, the process comprises the following steps:

[0044] S1. Melting: Melting the aluminum alloy ingot to obtain aluminum liquid, which is stored in a holding chamber; the melting temperature is 705-740°C, the time is 0.5-3.5 hours, and the holding chamber temperature is 785-930°C;

[0045] S2. After refining and degassing, the molten aluminum is cast into a heated metal mold to obtain a one-piece blank; the casting temperature is 695-720°C, the casting time is 18-30 seconds, and the cooling method is water mist cooling, air cooling, or combined cooling, the cooling temperature is 5-20°C, and the cooling time is 100-150 seconds; after natural cooling, the mold is demolded. The total time from casting to demolding of the one-piece blank is 180-320 seconds;

[0046] S3. Heat treatment: firstly subject the one-piece blank to solution treatment at 535-547℃ for 5.5-6.5 hours, then place it in water ≥40℃ within 30 seconds after solution treatment, quench for ≥150 seconds, and then age treatment at 120-145℃ for 2.5-4.5 hours to make the hardness reach HB≥58;

[0047] S4, primary turning: The heat-treated one-piece blank is clamped with a three-jaw hydraulic chuck, and the inner rim, outer rim and center hole are turned on the machine tool;

[0048] S5 uses the center hole and flange plane as the reference, and uses the CNC machining center to drill the valve hole, connecting screw hole and PCD hole on the one-piece blank;

[0049] S6, secondary turning: adjust the base block 4 to the lower end surface of the inner rim 5 of the hub, and rough-turn the lock ring and the outer surface of the hub on the machine tool after the one-piece blank after the primary turning;

[0050] S7, semi-finishing: using a precision cutting integrated diamond cutter 100 to cut from the outer wall of the lock ring to the inner circumference in the axial direction until the wall thickness is 1.5-2.5mm, the rotation speed of the precision cutting integrated diamond cutter 100 is 500-1200r / min, and the cutting rate is 0.05-0.2mm / r; wherein, Figure 4 As shown, the diamond knife 100 for cutting fine particles includes a diamond knife rod 110 and a diamond knife blade 120 connected to the end of the diamond knife rod 110;

[0051] S8, finishing: using the integrated diamond cutter 100 to continue machining from the outer wall end of the lock ring to the inner circumference in the axial direction until the wall thickness remaining is 0.2-0.5 mm, the rotation speed of the integrated diamond cutter 100 is: 500-1200 rpm, and the cutting rate is: 0.05-0.2 mm / r;

[0052] S9, split the lock ring: use the hook groove cutter 200 to process from the inner side wall end of the lock ring to the outer circle direction, wherein, Figure 6As shown, the hook groove knife 200 includes a hook groove knife rod 210 and a hook groove knife blade 220. The front end of the hook groove knife rod 210 is provided with a 360° rotatable displacement sheath 230. The end of the displacement sheath 230 is locked to the hook groove knife rod 210 by a hook groove knife locking bolt 250, which can increase the service life. The displacement sheath 230 is circumferentially extended with a retaining ring 240. The axis of the circumferential outer plane of the front end of the displacement sheath 230 forms an angle of 80-90° with the vertical plane of the retaining ring 240, as shown in FIG. Figure 7 As shown in FIG. 5 , the hook groove knife blade 220 cuts along an upward 45° oblique line at the inner side wall end of the lock ring. Figure 2 As shown in a, when the hook grooving cutter 200 hooks to a processing allowance of less than 0.5 mm, the rotation speed of the hook grooving cutter 200 is: 20-80 r / min, and the cutting rate of the hook grooving cutter 200 is: 0.05-0.25 mm / r. At the same time, the hook grooving cutter 200 is rapidly lifted 5-10 mm in the circumferential direction and retracted 1-3 mm axially. Inertia is used to make the split and finely machined locking ring fall on the displacement sleeve 230 and the retaining ring 240 to obtain an integrated wheel hub locking ring and wheel hub.

[0053] Specifically, in steps S6-S9, the radial runout of the three-jaw hydraulic chuck is in the range of 0.025-0.06mm, the axial runout is ≤0.08mm, the interference fit range of the embedded pressure jaw 3 is in the range of 2.5-3.5mm, and the locking force range of the three-jaw pull arm 2 is in the range of 25-38kg / cm 2 .

[0054] Specifically, in step S4, the inner rim is machined using an outer spherical cutter 300, and the arc cutting angle of the outer spherical cutter 300 is 114.55°. Figure 3 As shown in b.

[0055] Specifically, in steps S6-S9, the circumferential contact widths of the base pad 4 and the inner rim 5 of the hub, and the circumferential contact widths of the embedded pressing claw 3 and the inner rim 5 of the hub are 3-10 mm.

[0056] Specifically, the diamond blade 120 is made of PCD diamond, and the diamond shank 110 is made of 35 or 42 chromium-molybdenum alloy, which has high strength and high shock resistance. Figure 5 As shown, the side of the diamond knife arbor 110 is provided with a cooling and lubricating groove 150, which can be used for lubrication and cooling during processing.

[0057] Specifically, the diamond knife blade 120 is arranged in the middle of the diamond knife shank 110, and the top of the diamond knife blade 120 is provided with a 5±1° bevel 130. Figure 6 As shown in FIG. 3 , both left and right sides of the diamond blade 120 have an inwardly inclined slope 140 of 5-8°. Figure 6 As shown in (d) in the figure, an avoidance structure is formed.

[0058] In the present invention, when the lock ring is cast as a single or double piece, it can be processed according to the above steps S6 to S9.

[0059] like Figures 8 to 10 As shown, the processed lock ring includes a lock ring outer diameter 410, a lock ring inner pressure surface 420, a lock ring inner groove stop surface 430, a lock ring locking fitting plane 440 and a lock ring inner diameter casting surface 450.

[0060] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A processing and segmentation process for an integrated wheel hub and a lock ring, characterized in that: A tool for positioning an integrated hub and a locking ring is used, and the tool for positioning an integrated hub and a locking ring comprises: a hydraulic three-jaw hydraulic chuck, a base surface adjustment disk (1), the three-jaw hydraulic chuck comprises a three-jaw pulling arm (2) and an embedded pressure jaw (3) connected to the three-jaw pulling arm (2), a radial locking bolt (16) and an axial locking bolt (17) are connected between the three-jaw pulling arm (2) and the embedded pressure jaw (3), the base surface adjustment disk (1) is connected to a base pad (4), the outer end of the base pad (4) is provided with an air avoidance structure (41), the inner rim (5) of the hub is fixed to the upper end surface of the base pad (4) through the embedded pressure jaw (3), the base surface adjustment disk (1) is connected to a base screw core rod (6), the screw core rod is threadedly connected to a center shaft (7), the center shaft (7) is axially connected to a center positioning core (8), and the center positioning core (8) cooperates with the center hole (9) of the hub; The process comprises the following steps: S1. Melting: Melting aluminum alloy ingots to obtain aluminum liquid, which is stored in a holding chamber; the melting temperature is 705-740°C, the time is 0.5-3.5 hours, and the holding chamber temperature is 785-930°C; S2. After refining and degassing the molten aluminum, cast it into a heated metal mold to obtain a one-piece blank; the casting temperature is 695-720°C, the time is 18-30 seconds, the cooling temperature is 5-20°C, and the cooling time is 100-150 seconds; demolding is performed after natural cooling, and the total time from casting to demolding of the one-piece blank is 180-320 seconds; S3. Heat treatment: firstly subject the one-piece blank to solution treatment at 535-547℃ for 5.5-6.5 hours, then place it in water ≥40℃ within 30 seconds after solution treatment, quench for ≥150 seconds, and then age treatment at 120-145℃ for 2.5-4.5 hours to make the hardness reach HB≥58; S4, primary turning: The heat-treated one-piece blank is clamped with a three-jaw hydraulic chuck, and the inner rim, outer rim and center hole are turned on the machine tool; S5. Using the center hole and flange plane as reference, drill valve holes, connecting screw holes and PCD holes on the one-piece blank using a CNC machining center; S6, secondary turning: adjust the base block (4) to the lower end surface of the inner rim (5) of the wheel hub, and rough-turn the lock ring and the outer surface of the wheel hub on the machine tool after the one-piece blank after the primary turning; S7, semi-finishing: using a precision cutting integrated diamond knife (100) to process from the outer wall of the lock ring to the inner circle in the axial direction until the wall thickness remaining is 1.5-2.5 mm, the rotation speed of the precision cutting integrated diamond knife (100) is: 500-1200 r / min, and the cutting rate is: 0.05-0.2 mm / r; wherein, the precision cutting integrated diamond knife (100) includes a diamond knife shank (110) and a diamond knife blade (120) connected to the end of the diamond knife shank (110); S8, finishing: using a precision cutting integrated diamond cutter (100) to continue machining from the outer wall end of the lock ring to the inner circle axial direction until the wall thickness remaining amount is 0.2-0.5mm, the rotation speed of the precision cutting integrated diamond cutter (100) is: 500-1200r / min, and the cutting rate is: 0.05-0.2mm / r; S9. Splitting the lock ring: using a hook groove knife (200) to process from the inner side wall end of the lock ring to the outer circle direction, wherein the hook groove knife (200) includes a hook groove knife rod (210) and a hook groove knife blade (220), the front end of the hook groove knife rod (210) is provided with a 360° rotatable displacement sleeve (230), the end of the displacement sleeve (230) is locked to the hook groove knife rod (210) by a hook groove knife locking bolt (250), the displacement sleeve (230) is circumferentially extended with a retaining ring (240), the front end of the displacement sleeve (230) is 8 degrees perpendicular to the vertical plane of the retaining ring (240). The hook groove cutter blade (220) cuts along an upward 45° oblique line at the inner side wall end of the lock ring at an angle of 0-90°. When the hook groove cutter (200) hooks to a machining allowance of less than 0.5 mm, the rotation speed of the hook groove cutter (200) is 20-80 r / min, and the cutting rate of the hook groove cutter (200) is 0.05-0.25 mm / r. At the same time, the hook groove cutter (200) is rapidly raised 5-10 mm in the circumferential direction and retracted 1-3 mm in the axial direction. The lock ring after the split finishing is dropped onto the displacement sleeve (230) and the retaining ring (240) by inertia, thereby obtaining an integrated wheel hub lock ring and wheel hub; The diamond knife blade (120) is made of a PCD diamond sheet, the diamond knife shank (110) is made of a 35 or 42 chromium-molybdenum alloy shank, and a cooling and lubricating groove (150) is provided on the side of the diamond knife shank (110); The diamond knife blade (120) is arranged in the middle of the diamond knife shank (110), and the top of the diamond knife blade (120) is provided with a 5±1° bevel (130), and the left and right side ends of the diamond knife blade (120) are both inclined inwardly by 5-8° (140), thereby forming an avoidance structure.

2. The process for processing and separating an integrated wheel hub and a lock ring according to claim 1, characterized in that: Limit blocks (10) connected to the base surface adjustment disk (1) are provided at both side ends of the central shaft (7), and a displacement blocking block (11) is provided at the lower end of the central shaft (7). When the central shaft (7) moves axially, the displacement blocking block (11) contacts the limit block (10) for position limiting.

3. The process for processing and separating an integrated wheel hub and a lock ring according to claim 2, characterized in that: The side end of the limit block (10) is connected to a limit locking bolt (12), and the limit locking bolt (12) is used to lock the central shaft (7) and the limit block (10).

4. The process for processing and separating an integrated wheel hub and a lock ring according to claim 1, characterized in that: The top end of the embedded pressure claw (3) is provided with a protective jacket (13).

5. The process for processing and separating an integrated wheel hub and a lock ring according to claim 1, characterized in that: One axial end of the central shaft (7) is connected to a positioning locking bolt (14), the central positioning core (8) is inserted into one axial end of the central shaft (7) and fixed by the positioning locking bolt (14), and an adjustment rotation plane (15) is formed between the central positioning core (8) and the central shaft (7).

6. The process for processing and separating an integrated wheel hub and a lock ring according to claim 1, characterized in that: In steps S6-S9, the radial runout of the three-jaw hydraulic chuck is in the range of 0.025-0.06mm, the axial runout is ≤0.08mm, the interference fit of the embedded pressure jaw (3) is in the range of 2.5-3.5mm, and the locking force of the three-jaw pull arm (2) is in the range of 25-38kg / cm 2 .

7. The process for processing and separating an integrated wheel hub and a lock ring according to claim 1, characterized in that: In steps S6-S9, the circumferential contact widths of the base pad (4) and the inner rim of the hub (5), as well as the circumferential contact widths of the embedded pressure claw (3) and the inner rim of the hub (5) are 3-10 mm.

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