KR101338439B1 - Device and method for manufacturing wheel bearing device - Google Patents

Device and method for manufacturing wheel bearing device Download PDF

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Publication number
KR101338439B1
KR101338439B1 KR1020110112885A KR20110112885A KR101338439B1 KR 101338439 B1 KR101338439 B1 KR 101338439B1 KR 1020110112885 A KR1020110112885 A KR 1020110112885A KR 20110112885 A KR20110112885 A KR 20110112885A KR 101338439 B1 KR101338439 B1 KR 101338439B1
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KR
South Korea
Prior art keywords
hub
wheel bearing
bearing assembly
cover
inner ring
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KR1020110112885A
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Korean (ko)
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KR20130048009A (en
Inventor
조명호
서상교
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주식회사 일진글로벌
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Priority to KR1020110112885A priority Critical patent/KR101338439B1/en
Publication of KR20130048009A publication Critical patent/KR20130048009A/en
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Publication of KR101338439B1 publication Critical patent/KR101338439B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The present invention relates to a manufacturing apparatus and a manufacturing method of a wheel bearing assembly that can reduce the defect rate of the wheel bearing assembly by preventing foreign matter from penetrating the rolling element in the manufacturing process of the wheel bearing assembly.
The manufacturing apparatus of the wheel bearing assembly includes a hub having one end coupled to a wheel of the vehicle and the other end having a stepped portion and an end portion, an inner ring mounted on the stepped portion of the hub, an outer ring mounted on the vehicle body, and the outer ring, the hub and the inner ring A wheel bearing assembly manufacturing apparatus for orbital forming a distal end portion of the hub toward the inner ring in a wheel bearing assembly including a rolling element interposed therebetween, wherein the hub is installed on an upper surface of the wheel bearing assembly. A base supporting the hub when the base is supported; A molding tool mounting portion mounted on an upper portion of the base; Rotatably mounted to the forming tool mounting portion, moveable along the center axis of the hub together with the molding tool mounting portion, and rotate about a first axis inclined by a set angle with respect to the hub axis, and simultaneously A molding tool revolving about a second axis parallel to the axis of rotation; And a cover part provided to prevent foreign matter from penetrating between the inner ring and the outer ring of the wheel bearing assembly, wherein at least one of the molding tool mounting part and the base moves toward the other one so that the molding tool of the hub is rotated. The distal end can be orbital formed radially outward towards the inner ring.

Description

Manufacturing apparatus and manufacturing method of wheel bearing assembly {DEVICE AND METHOD FOR MANUFACTURING WHEEL BEARING DEVICE}

The present invention relates to a manufacturing apparatus and a manufacturing method of a wheel bearing assembly, and more particularly, to manufacture a wheel bearing assembly that can reduce the defect rate of the wheel bearing assembly by preventing foreign matter from penetrating the rolling element in the manufacturing process of the wheel bearing assembly. It relates to an apparatus and a manufacturing method.

Generally, wheel bearing assemblies allow the vehicle to move by rotatably connecting the wheel to the vehicle body. Such a wheel bearing assembly is divided into a driving wheel wheel bearing assembly for transmitting the power generated by the engine and a follower wheel bearing for transmitting no driving force.

The drive wheel wheel bearing assembly includes a rotating element that is connected to rotate with the drive wheel shaft that is generated by the engine and rotates by the torque passing through the transmission, and a non-rotating element fixed to the vehicle body, between the rotating element and the non-rotating element. The rolling element is interposed. The follower wheel bearing assembly has the same structure as the drive wheel bearing assembly, except that the rotation element is not connected to the drive wheel shaft.

The wheel bearing assembly is manufactured such that a preload is generated in the rolling element for the stability of the operating performance, and a method mainly used for preloading the rolling element is orbital forming.

A brief look at a conventional orbital forming method is as follows.

First, a first row of rolling elements is inserted into a rotating element of the wheel bearing assembly (herein, 'hub'), and then the outer ring is mounted so that the first inner and outer ring raceways and the first rolling elements come into contact with each other. Thereafter, after inserting the rolling elements in the second row into the second outer ring raceway, the inner ring on which the second inner ring track is formed is press-fitted. At this time, the distal end of the hub protrudes outward in the axial direction of the inner ring.

Position the wheel bearing assembly in the above state so that the distal end of the hub is upwards and fix it to the base so that the hub and the outer ring do not move.

The tip of the hub is then pressed against the hub axis (meaning the central axis of the wheel bearing assembly) at an angle relative to the hub axis and pressed from the top to the bottom of the hub with a forming tool that rotates about the hub axis. Bend outward radially towards the inner ring and plastically deform. At this time, the inner ring is preloaded with the rolling element and fixed in the axial direction.

By the way, when processing the distal end of the hub by using such a conventional orbital forming method, there is a possibility that a foreign material is transferred to the rolling element to cause product defects.

Therefore, the present invention was created to solve the problems as described above, an object of the present invention is a manufacturing apparatus and manufacturing method of a wheel bearing assembly that can prevent foreign substances from entering the rolling element in the manufacturing process of the wheel bearing assembly. The purpose is to provide.

The manufacturing apparatus of the wheel bearing assembly according to the embodiment of the present invention for achieving this object is a hub having one end coupled to the wheel of the vehicle and the other end has a stepped portion and the end portion, the inner ring mounted on the stepped portion of the hub, the vehicle body In a wheel bearing assembly comprising an outer ring to be mounted and a rolling element interposed between the outer ring and the hub and the inner ring, the distal end of the hub is orbital formed radially outward toward the inner ring.

The manufacturing apparatus of the wheel bearing assembly, the base is installed on the upper surface of the hub for supporting the hub during orbital forming; A molding tool mounting portion mounted on an upper portion of the base; Rotatably mounted to the forming tool mounting portion, moveable along the center axis of the hub together with the molding tool mounting portion, and rotate about a first axis inclined by a set angle with respect to the hub axis, and simultaneously A molding tool revolving about a second axis parallel to the axis of rotation; And a cover part provided to prevent foreign matter from penetrating between the inner ring and the outer ring of the wheel bearing assembly, wherein at least one of the molding tool mounting part and the base moves toward the other one so that the molding tool of the hub is rotated. The distal end may be adapted to orbital form radially outward toward the inner ring.

The cover part is provided to cover between the inner and outer rings of the wheel bearing assembly; A support part provided with the cover movable up and down; And an elastic part provided at the support part to elastically support the cover.

The cover may include a cover protrusion which protrudes between an inner ring and an outer ring of the assembly.

The cover portion may be coupled to the molding tool mounting portion.

The forming tool is cylindrical and the central axis of the forming tool may coincide with the first axis.

A molding groove may be formed at a lower end of the molding tool in contact with the distal end of the hub to orbital the distal end of the hub toward the inner ring in a radially outward direction.

One side of the hub includes a flange protruding radially outward and a bolt hole drilled in the flange to couple the wheel and the hub of the vehicle, and the base has a guiding groove formed at a position corresponding to the bolt hole. A guiding pin may be inserted into the bolt hole and the guiding groove to guide the hub to have a set movement to reduce stress concentrated on the rolling element during orbital forming.

The set movement of the hub may be generated by the rotational movement of the guiding pin in the bolt hole.

The set movement of the hub may be a vertical reciprocating motion of the hub within a predetermined range.

When the hub is vertically reciprocating, the molding tool may also be vertically reciprocating in contact with the hub.

According to another aspect of the present invention, there is provided a method of manufacturing a wheel bearing assembly, a hub having one end coupled to a wheel of a vehicle and the other end having a stepped portion and an end portion formed therein, an inner ring mounted on the stepped portion of the hub, an outer ring mounted on the vehicle body, and In a wheel bearing assembly comprising a rolling element interposed between the outer ring and the hub and the inner ring, a forming tool rotates and contacts the distal end of the hub to orbital form the distal end of the hub outwardly toward the inner ring.

The manufacturing method of the wheel bearing assembly includes a cover part to cover the inner and outer rings of the wheel bearing assembly to prevent foreign matter from penetrating between the inner and outer rings of the wheel bearing assembly, and at least one of the forming tool and the hub. One moves toward the other to cause the forming tool to contact the distal end of the hub, the forming tool rotating about a first axis inclined by a set angle with respect to the hub axis, and at the same time being parallel to the hub axis. It revolves about two axes and can orbitally form the distal end of the hub outwards inwardly towards the inner ring.

The hub may be guided to have a set movement to reduce the stress concentrated on the rolling element during orbital forming.

The cover part is provided to cover between the inner and outer rings of the wheel bearing assembly; A support part provided with the cover movable up and down; And an elastic part provided at the support part to elastically support the cover.

The cover may include a cover protrusion which protrudes between an inner ring and an outer ring of the assembly.

The cover portion may be coupled to the molding tool mounting portion.

As described above, according to the manufacturing apparatus and manufacturing method of the wheel bearing assembly according to the present invention, it is possible to prevent foreign matter from penetrating into the rolling element to lower the defective rate of the wheel bearing assembly.

In addition, since the hub has a set movement at the beginning of orbital forming as the molding tool rotates, the impact applied when the molding tool contacts the distal end of the hub can be reduced, thereby preventing breakage of the distal end of the hub.

1 is a cross-sectional view showing the structure of a general wheel bearing assembly.
2 is a schematic view showing an apparatus for manufacturing a wheel bearing assembly according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the structure of a general wheel bearing assembly.

The wheel bearing assembly illustrated in FIG. 1 illustrates one of various types of wheel bearing assemblies for convenience of description, and the present invention is not limited to the illustrated wheel bearing assembly and is not applicable to various types of wheel bearing assemblies. Can be applied. In particular, it is obvious that it can be applied to any of the wheel bearing assemblies that comprise a rotating element and a non-rotating element, which are fabricated by orbital forming the distal end of one element toward the other.

In addition, the wheel bearing assembly shown in FIG. 1 illustrates a driven wheel wheel bearing assembly. However, since the driving wheel wheel bearing assembly is formed by the inner side of the hub and spline-coupled with the drive shaft is also manufactured by the same method as the driven wheel wheel bearing assembly, the technical spirit of the present invention is not limited to the driven wheel wheel bearing assembly, the driving wheel wheel bearing assembly It is also obvious that it can be applied to.

As shown in FIG. 1, an exemplary wheel bearing assembly 100 includes a hub 110, an inner ring 120, an outer ring 130, and a rolling element 150. Here, a roller type rolling element is shown, but a rolling element of a tapered roller type may be used, and the number of rows of rolling elements can be arbitrarily determined by a person skilled in the art.

The hub 110 has a cylindrical shape, and a wheel (not shown) of the vehicle is coupled to one end of the hub 110. To this end, one end of the hub 110 protrudes radially outward to form the first flange 112 and protrude in the direction of the hub axis X1 to form the pilot 116. A first bolt hole 114 is drilled in the flange 112 so that the wheel of the vehicle can be coupled to the hub 110 by a coupling means such as a bolt, and the pilot 116 attaches the wheel to the hub 110. It serves as a guide for the wheels when mounted. In addition, the step portion 118 is formed on the other side of the hub 110, and the distal end portion 160 extends to the step portion 118. The distal end portion 160 extends straight in the direction of the hub axis X1 before orbital forming, but is bent in a radially outward direction to be plastically deformed after orbital forming. A first inner raceway 119a is formed between the stepped portion 118 of the hub 110 and the first flange 112.

The inner ring 120 is pressed into the stepped portion of the hub 110, and the inner ring 120 has a second inner ring raceway 119b.

Outer ring 130 is mounted to the outside of the radius of the hub (110). The first and second outer ring raceways 139a and 139b corresponding to the first and second inner ring tracks 119a and 119b are formed on the radially inner surface of the outer ring 130, and a portion of the outer surface of the outer ring protrudes radially outward. To form a second flange 132. A second bolt hole 134 is drilled in the second flange 132 so that the outer ring 130 is coupled to the vehicle body by a coupling means such as a bolt.

The rolling member 150 is interposed between the first inner ring raceway 119a and the first outer ring raceway 139a and between the second inner ring raceway 119b and the second outer ring raceway 139b.

In order to prevent foreign substances such as dust and moisture from entering the rolling member 150 between the hub 110 and the outer ring 130 and between the inner ring 120 and the outer ring 130, 142, respectively.

2 is a schematic view showing an apparatus for manufacturing a wheel bearing assembly according to an embodiment of the present invention.

As shown in FIG. 2, the manufacturing apparatus of the wheel bearing assembly according to the embodiment of the present invention includes a base 400, a molding tool mounting part 300, a molding tool 200, and a cover part 500.

The base 400 is disposed on the lowermost layer of the wheel bearing assembly, and the wheel bearing assembly 100 is positioned on an upper surface thereof. In this case, a pilot insertion groove 420 is formed in the base 400 so that the pilot 116 protrudes in the direction of the hub axis X1 which becomes a rotation center axis of the hub 110 when the wheel bearing assembly 100 is mounted. Will be inserted.

In addition, a guiding groove 410 is formed at a position corresponding to the first bolt hole 114 to the side of the pilot insertion groove 420 so that the first bolt when the hub 110 is mounted to the base 400. The guiding pin 115 is inserted into the ball 114 and the guiding groove 410 to support the hub 110 on the base 400. A predetermined gap is formed between the guiding pins 115 and the guiding grooves 410 so that the hub 110 can move back, forth, left, and right.

The molding tool mounting part 300 is mounted on an upper portion of the base 400.

At least one of the base 400 and the molding tool mounting part 300 may be connected to a moving means such as a cylinder (not shown) to move up and down toward each other. Here, a case where the molding tool mounting portion 300 is connected to the cylinder and can move up and down will be described. The molding tool mounting unit 300 is rotatably mounted to the molding tool mounting unit 300 about the first shaft Y1 inclined by a predetermined angle with respect to the hub axis X1. In addition, the forming tool mounting part 300 is positioned such that its central axis coincides with a second axis Y2 parallel to the hub axis X1, particularly preferably in a straight line with the hub axis X1.

The molding tool 200 has a cylindrical shape and is rotatably mounted at an angle set to the molding tool mounting part 300, and the distal end 160 of the hub 110 contacts the lower end thereof so that the inner ring is in orbital forming. A molding groove 210 is formed to be formed radially outward toward the 120.

The molding tool 200 is subjected to two rotational motions of rotation and revolution. Here, the rotation means the rotation about the first axis (Y1), which is the centerline of the molding tool 200, and the revolution means the second center around the point where the second axis (Y2) and the first axis (Y1) meets. It means to rotate around the axis Y2. The top and bottom of the molding tool 200 by the revolving is to have a circular motion having a set radius. The reason for rotating and revolving the molding tool 200 as described above is to reduce the impact by reducing the relative rotational speed at the contact of the molding tool 200 and the distal end 160 of the hub 110.

In addition, the molding tool 200 may move up and down within a predetermined range.

The cover part 500 is provided to prevent foreign matter from penetrating between the inner ring 120 and the outer ring 130 of the wheel bearing assembly 100, and the inner ring 120 and the outer ring of the wheel bearing assembly 100. Cover 510 is provided to cover between the 130, the support 520 is provided with the cover 510 to be moved up and down and the elastic portion provided in the support 520 to elastically support the cover 510 The unit 530 is included.

The cover part 500 is a foreign matter generated in the process of performing orbital forming by the operation of the molding tool 200 is infiltrated between the inner ring 120 and the outer ring 130, such as foreign matter to the rolling element 150 To prevent it from being delivered.

In particular, when foreign matters are transferred to the rolling element 150, a failure rate of the wheel bearing assembly may increase, and the failure rate may be lowered by providing the cover part 500.

In addition, the hub 110 may swing up and down in the process of performing orbital forming by the operation of the molding tool 200, and in this process, the cover 510 may be detached. However, the cover 510 may vertically move up and down in the support part 520, and an elastic part 530 that elastically supports the cover 510 may be provided in the support part 520 to cover the cover 510. ) Can be prevented from leaving.

In addition, the cover 510 includes a cover protrusion 512 protruded between the inner ring 120 and the outer ring 130 of the assembly 100, and when the cover 510 is covered, the cover protrusion ( 512 is positioned between the inner ring 120 and the outer ring 130 to allow the cover 510 to be stably positioned, and prevent the cover 510 from being separated during operation of the molding tool 200. can do.

During the orbital forming operation, the inner sealing member 142 may be assembled before the assembly, and after performing the orbital forming operation, the inner sealing member 142 may be assembled to lower the defect rate of the product and improve assembly productivity. have.

The cover part 500 is coupled to the molding tool mounting part 300 to position the cover part 500 and the molding tool 200 before an orbital forming operation, and then the cover 510 has the inner ring 120. Covering between and the outer ring 130, and after orbital forming may be performed, in this case, the cover portion 500 may be integrally coupled to the molding tool mounting portion 300 can be performed more smoothly. . However, the cover part 500 is provided separately so that the cover 510 first covers the inner ring 120 and the outer ring 130, and then sets the molding tool 200 to a position for work. Orbital forming can also be performed.

Hereinafter, a process of manufacturing the wheel bearing assembly using the manufacturing device of the wheel bearing assembly will be described.

First, the wheel bearing assembly 100 is positioned on the upper surface of the base 400 so that the pilot 116 of the wheel bearing assembly 100 is inserted into the pilot insertion groove 420, and then the first bolt hole 114 is guided. Align the groove 410 and insert the guiding pin 115.

The cover part 500 is positioned to cover between the inner ring 120 and the outer ring 130 of the wheel bearing assembly 100, and the forming tool 200 rotates about the first axis Y1 and is formed. It revolves around two axes (Y2). In this state, the molding tool mounting part 300 descends toward the wheel bearing assembly 100.

Finally, the distal end 160 of the hub 110 is inserted into the forming groove 210 of the molding tool 200 and is in contact with each other and the distal end 160 of the hub 110 is molded radially outward toward the inner ring 120. It will be in close contact with one end of the inner ring (120).

At this time, since the molding tool 200 rotates and revolves, the difference in rotational speed is reduced when the molding tool 200 is in contact with the distal end 160, thereby reducing the impact applied to the distal end 160.

In addition, since a predetermined gap is formed between the guiding pin 115 and the guiding groove 410, the guiding pin 115 is formed in the guiding groove 410 according to the rotation of the molding tool 200. At a constant rotation or swing up and down, thereby the hub 110 has a set movement. The set movement of the hub 110 reduces the stress concentrated on the rolling element 150 during orbital forming and reduces the impact applied when the forming tool 200 contacts the distal end 160 of the hub 110. When the hub 110 swings up and down, the molding tool 200 may also reciprocate up and down in contact with the hub 110.

In addition, at the beginning when the distal end 160 of the hub 110 contacts the molding groove 210 of the molding tool 200 and becomes orbital forming, as described above, the hub 110 moves back, forth, left, right, up and down. You can swing. In this case, the hub 110 is not separated from the base 400 by the guiding pins 115 inserted into the guiding grooves 410. In this state, as the forming tool 200 is further lowered and orbital forming is completed, the movement of the hub 110 is reduced by the pressing force of the forming tool 200 and the wheel bearing assembly 100 is completed.

In addition, in this process, the cover 510 may be moved up and down by a predetermined size in the support portion 520, the elastic portion 530 for elastically supporting the cover 510 is provided in the support portion 520 Even if vibration or shaking occurs, the cover 510 may be prevented from being separated.

When the wheel bearing assembly 100 is completed by the above process, the molding tool mounting part 300 moves upwards and leaves the top cover part 500, and then processes the processed wheel bearing assembly 100. Will be taken out.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: hub assembly 110: hub
112: flange 114: first bolt hole
115: guiding pin 116: pilot
118: step portion 119a: first inner ring track
119b: second inner ring orbit 120: inner ring
130: outer ring 132: second flange
134: second bolt hole 139a: first paddle raceway
139b: second outer ring raceway 140, 142: sealing member
150: rolling element 160: distal end
200: molding tool 210: molding groove
300: molding tool mounting portion 400: base
410: guiding groove 420: pilot insertion groove
500: cover 510: cover
512: cover protrusion 520: support
530: elastic part

Claims (15)

One end is coupled to the wheel of the vehicle, and the other end includes a hub having a stepped portion and a distal end portion, an inner ring mounted on the stepped portion of the hub, an outer ring mounted on the vehicle body, and a rolling element interposed between the outer ring, the hub, and the inner ring; An apparatus for manufacturing a wheel bearing assembly, wherein the wheel bearing assembly orbitally forms the distal end of the hub toward the inner ring in a radially outward direction.
A base supporting the hub when orbital forming the hub by installing the hub on an upper surface thereof;
A molding tool mounting portion mounted on an upper portion of the base;
And rotatably mounted to the molding tool mounting portion, move along the axis of the hub together with the molding tool mounting portion, and rotate about a first axis inclined by a set angle with respect to the hub axis, and simultaneously with the hub shaft. A forming tool revolving about a second parallel axis; And
A cover part provided to prevent foreign matter from penetrating between the inner and outer rings of the wheel bearing assembly;
, ≪ / RTI &
At least one of the forming tool mounting portion and the base is moved toward the other such that the forming tool is orbitally formed radially outwardly of the distal end of the hub towards the inner ring. The method of claim 1,
The cover
A cover provided to cover the inner and outer rings of the wheel bearing assembly;
A support part provided with the cover movable up and down; And
An elastic part provided at the support part to elastically support the cover;
Apparatus for producing a wheel bearing assembly comprising a. 3. The method of claim 2,
The cover
And a cover protrusion projecting between the inner and outer rings of the assembly. The method according to any one of claims 1 to 3,
And the cover portion is coupled to the forming tool mounting portion. The method of claim 1,
Wherein the forming tool is cylindrical and the central axis of the forming tool coincides with the first axis. The method of claim 1,
And a forming groove formed at a lower end of the forming tool to orbital form a distal end of the hub toward the inner ring in contact with the distal end of the hub. The method of claim 1,
One side of the hub includes a flange protruding outward from the radius and a bolt hole for drilling the wheel and the hub of the vehicle coupled to the flange,
The base is formed with a guiding groove at a position corresponding to the bolt hole,
And a guiding pin is inserted into the bolt hole and the guiding groove to guide the hub to have a set movement to reduce stress concentrated on the rolling element during orbital forming. 8. The method of claim 7,
And a predetermined movement of the hub is generated by a rotational movement of the guiding pin in the bolt hole. 8. The method of claim 7,
And a predetermined movement of the hub is an up and down reciprocating motion of the hub within a predetermined range. The method of claim 9,
When the hub is in the vertical reciprocating motion, the manufacturing tool of the wheel bearing assembly, characterized in that the forming tool also reciprocating up and down in contact with the hub. One end is coupled to the wheel of the vehicle, and the other end includes a hub having a stepped portion and a distal end portion, an inner ring mounted on the stepped portion of the hub, an outer ring mounted on the vehicle body, and a rolling element interposed between the outer ring, the hub, and the inner ring; A method of manufacturing a wheel bearing assembly in which a molding tool rotates in a wheel bearing assembly and contacts the distal end of the hub to orbital form the distal end of the hub radially outward toward the inner ring.
A cover part is disposed to cover the inner and outer rings of the wheel bearing assembly to prevent foreign matter from penetrating between the inner and outer rings of the wheel bearing assembly.
At least one of the forming tool and the hub moves toward the other to cause the forming tool to contact the distal end of the hub,
The forming tool rotates about a first axis inclined by a set angle with respect to the hub axis, simultaneously revolves about a second axis parallel to the hub axis, and orbitally forms the distal end of the hub outward toward the inner ring. Method of producing a wheel bearing assembly, characterized in that. 12. The method of claim 11,
And the hub is guided to have a set movement in order to reduce stress concentrated on the rolling element during orbital forming. 12. The method of claim 11,
The cover
A cover provided to cover the inner and outer rings of the wheel bearing assembly;
A support part provided with the cover movable up and down; And
An elastic part provided at the support part to elastically support the cover;
Method of producing a wheel bearing assembly comprising a. The method of claim 13,
The cover
And a cover protrusion formed to protrude between the inner and outer rings of the assembly. The method according to any one of claims 11 to 14,
And the cover portion is coupled to the forming tool mounting portion.
KR1020110112885A 2011-11-01 2011-11-01 Device and method for manufacturing wheel bearing device KR101338439B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11129703A (en) * 1997-08-28 1999-05-18 Nippon Seiko Kk Rolling bearing unit for wheel supporting
JP2003097577A (en) 2001-09-27 2003-04-03 Ntn Corp Bearing device for wheel
KR20070072548A (en) * 2004-09-30 2007-07-04 가부시키가이샤 제이텍트 Hub unit, rolling bearing device, producing method for rolling bearing device, and assembling device and assembling method for rolling bearing device
JP2009243602A (en) 2008-03-31 2009-10-22 Jtekt Corp Wheel bearing device and manufacturing method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11129703A (en) * 1997-08-28 1999-05-18 Nippon Seiko Kk Rolling bearing unit for wheel supporting
JP2003097577A (en) 2001-09-27 2003-04-03 Ntn Corp Bearing device for wheel
KR20070072548A (en) * 2004-09-30 2007-07-04 가부시키가이샤 제이텍트 Hub unit, rolling bearing device, producing method for rolling bearing device, and assembling device and assembling method for rolling bearing device
JP2009243602A (en) 2008-03-31 2009-10-22 Jtekt Corp Wheel bearing device and manufacturing method therefor

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