KR20110110952A - Forging mold for wheel hub of commercial vehicle - Google Patents

Forging mold for wheel hub of commercial vehicle Download PDF

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Publication number
KR20110110952A
KR20110110952A KR1020100030265A KR20100030265A KR20110110952A KR 20110110952 A KR20110110952 A KR 20110110952A KR 1020100030265 A KR1020100030265 A KR 1020100030265A KR 20100030265 A KR20100030265 A KR 20100030265A KR 20110110952 A KR20110110952 A KR 20110110952A
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KR
South Korea
Prior art keywords
core
mold
hub
shape
commercial vehicle
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KR1020100030265A
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Korean (ko)
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KR101169360B1 (en
Inventor
김기원
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주식회사 알룩스
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Publication of KR20110110952A publication Critical patent/KR20110110952A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/024—Forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The present invention is a flange portion formed of a plate of a hollow circle shape, and formed in a hollow cylindrical shape, the wheel coupling portion is formed in the vertical direction protruding in the vertical direction from the center of one surface of the flange portion accommodates the bearing on the inside and the wheel is coupled to the outside; In the forging die for hubs of commercial vehicle wheels to form a hub of a commercial vehicle wheel, which is formed in a hollow cylindrical shape and protrudes in the vertical direction from the center of the other surface of the flange portion and includes a disk connecting portion connected to the brake disk, A lower core having a shape corresponding to the inner hollow portion of the wheel engaging portion, the first lower mold formed to step around the outer core of the hub, and an inner side of the lower core of the lower core; A second lower mold formed stepped to correspond to the second lower mold coupled to a lower portion of the first lower mold, and It is formed on top of the sub core, the lower region is formed to surround the upper core and the inner hollow portion of the disk connection portion, and is formed to surround the upper core, the inside is formed stepped to the outer shape of the hub, Is connected to the upper mold of the first lower mold, an ejector ring which is formed in a ring shape corresponding to the cross section of the disk connecting portion and is installed between the upper core and the upper mold, and is connected to the ejector ring to win the ejector ring. And a first raising and lowering unit for lowering.
According to the present invention, by forming a ring-shaped ejector ring in the upper mold to increase the gap area between the upper mold and the outside to facilitate the discharge of gas generated during molding to suppress the occurrence of defective products, and to remove part of the lower mold It is effective to make it easy to discharge the release agent by forming the lifting possible.

Description

Forging die for hub of commercial vehicle wheel {FORGING MOLD FOR WHEEL HUB OF COMMERCIAL VEHICLE}

The present invention relates to a molten metal forging die for a hub of a commercial vehicle wheel, and more particularly, by forming a ring-shaped ejector ring in an upper mold to increase the clearance area between the upper mold and the outside to smoothly discharge gas generated during molding. And it relates to a molten metal forging die for the hub of a commercial vehicle wheel to facilitate the discharge of the release agent by forming a portion of the lower die to be raised and lowered.

In general, the wheel hub is made of cast iron products, but the material is changed to aluminum to meet the demands of the times and the environment. In the case of cast iron, the casting method may be used, but in the case of aluminum, general casting Due to the significant deterioration of the material properties due to defects in the mold, molding of the molten metal forging method, which is a high pressure molding method, is mainly performed.

The molten metal forging molding for forming a hub of a commercial vehicle wheel is a molding method in which a molten metal in a molten state is injected into a cavity of a forging die, and then pressurized and cooled to produce a hub of a commercial vehicle wheel corresponding to a cavity of the forging die. When completed, the ejector means are pushed away from the mold hub of the commercial vehicle wheel to demould to obtain a molding.

As described above, the molten metal forging mold for forming the hub of a commercial vehicle wheel includes a lower mold 10 having a cavity recessed from an upper side to a lower side so as to correspond to a lower region of the hub, and a lower surface of the molten metal forging die. It is installed to interview the upper surface of the mold 10, the upper mold 20 is formed with a cavity recessed from the bottom to the upper portion corresponding to the upper region of the hub, and installed so as to extend from the top of the upper mold 20 to the interior of the cavity It consists of a pin-shaped ejector means that is moved up and down.

Looking at the process of manufacturing a hub of a commercial vehicle wheel using the molten forging die, first, when the upper mold 20 is moved to the upper by a separate driving means (not shown), the release agent is applied to the cavity inside the mold and melted Inject metal.

Thereafter, the upper die 20 is moved downward by the driving means to apply pressure to the molten metal, thereby forming a wheel hub corresponding to the cavity inside the die.

Then, the upper mold 20 is moved upward by the driving means, and the wheel hub attached to the upper mold 20 and moved upward is separated from the upper mold 20 by the ejector means 30 and taken out. do.

Conventional molten metal forging molds for forming a wheel hub of a commercial vehicle according to the above series of processes have the following problems.

First, since the gas generated when the molten metal is injected into the inner cavity of the mold and the upper mold 20 is moved downward to apply pressure to the molten metal is discharged only into the gap created by the ejector means 30, It was difficult to discharge the gas there was a problem that a defective product occurs.

Second, since a separate release agent discharge means is not formed in the lower mold 10, there is a problem that it is difficult to remove the release agent after taking out the hub of the molded wheel from the mold.

The present invention is to solve the above problems, an object of the present invention is to form a ring-shaped ejector ring in the upper mold to increase the clearance area between the upper mold and the outside to smoothly discharge the gas generated during molding In addition, it is to provide a molten metal forging die for the hub of the commercial vehicle wheel to facilitate the discharge of the release agent by forming a portion of the lower die to be elevated.

According to the present invention, the flange portion formed of a plate of a hollow circle shape, and formed in a hollow cylindrical shape protruding in the vertical direction from the center of one surface of the flange portion to accommodate the bearing on the inside and the wheel is coupled to the outside Forging hub of a commercial vehicle wheel to form a hub of a commercial vehicle wheel is formed in a hollow cylindrical shape and a disk connecting portion is formed in a hollow cylindrical shape projecting in the vertical direction from the center of the other surface of the flange portion connected to the brake disk In the mold, the upper portion is formed to surround the lower core of the shape corresponding to the inner hollow portion of the wheel engaging portion, the lower core, the inner side is the first lower mold formed stepped in the outer shape of the hub, the inner side is A second stepped to correspond to a shape of a lower end of the lower core and coupled to a lower portion of the first lower mold A sub mold, an upper core formed on an upper portion of the lower core, the lower region of which is formed in a shape corresponding to an inner hollow portion of the disc connecting portion, and formed to surround the upper core, and having an inner step in an outer shape of the hub. The upper mold is formed so as to be in contact with the upper portion of the first lower mold, an ejector ring formed in a ring shape corresponding to the cross section of the disc connecting portion and installed between the upper core and the upper mold, and connected to the ejector ring. Is achieved by the first elevating unit for elevating the ejector ring.

In addition, a gap may be formed between the upper horizontal surface of the first lower mold and the lower horizontal surface of the upper mold.

In addition, the first elevating unit is a passage that is drilled into the interior of the cavity from the upper portion of the upper core, and is installed in the passage is coupled to the lower end is coupled to the ejector ring, the elevating along the passage by the drive means It may include a falling pin.

The apparatus may further include a second elevating unit formed below the lower core to elevate the lower core.

As a result, a ring-shaped ejector ring is formed in the upper mold to increase the gap area between the upper mold and the outside, thereby smoothly discharging the gas generated during molding, thereby suppressing the occurrence of defective products and raising and lowering a part of the lower mold. It is formed to enable it is effective to facilitate the release of the release agent.

1 is a front cross-sectional view of the prior art.
2 is a planar cross-sectional view of the prior art.
3 is a perspective view of a hub of a wheel formed by a molten metal forging die for a hub of a commercial vehicle wheel according to the present invention.
Figure 4 is a front cross-sectional view of the molten metal forging die for hub of a commercial vehicle wheel according to the present invention.
5 is a cross-sectional view of a molten metal forging die for a hub of a commercial vehicle wheel according to the present invention.
Figures 6a to 6g is an operation of the molten metal forging die for the hub of a commercial vehicle wheel according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings.

The accompanying drawings show exemplary forms of the present invention, which are provided to explain the present invention in more detail, and the technical scope of the present invention is not limited thereto.

Before describing the present invention, a hub of a commercial vehicle wheel molded by the present invention will be briefly described.

Hub 100 of the commercial vehicle wheel formed by the present invention, as shown in Figure 3, the flange portion 110 is formed of a plate of a hollow circle shape, and is formed in a hollow cylindrical shape of the flange portion 110 Protruding from the center of one surface in a vertical direction to accommodate the bearing (not shown) on the inside and the wheel coupling portion 120 is coupled to the wheel (not shown) on the outside, and a hollow cylindrical shape of the other side of the flange 110 Protruding in the vertical direction is composed of a disk connecting portion 130 connected to the brake disk (not shown).

The hub 100 of a commercial vehicle wheel configured as described above is generally used widely, and a detailed description thereof will be omitted.

As shown in FIGS. 4 and 5, a molten metal forging die for a hub of a commercial vehicle wheel according to the present invention includes a lower core 200 having a shape corresponding to an inner hollow of the wheel coupling part 120 of the hub 100. The first lower mold 210 is formed to surround the lower core 200 and the inner side is stepped to the outer shape of the hub 100, and the inner side is stepped to correspond to the lower end shape of the lower core 200. The second lower mold 220 coupled to the lower portion of the first lower mold 210 and the upper portion of the lower core 200 may be formed, and the lower region may correspond to the inner hollow portion of the disc connecting portion 130 of the hub 100. The upper mold 300 is formed in a shape, and the upper mold is formed to surround the upper core 300 and the inside is formed stepped into the outer shape of the hub 100, the lower die is in contact with the upper portion of the first lower mold 210 310 and a ring shape corresponding to a cross section of the hub 100 and the disk connecting portion 130. And an ejector ring 400 installed between the upper core 300 and the upper mold 310, and a first lifting unit 500 connected to the ejector ring 400 to lower the ejector ring 400. do.

First, the lower core 200 protrudes in a shape corresponding to the inner hollow portion of the wheel coupling portion 120 from the lower portion to the upper portion, and the lower end of the protruding portion is horizontally aligned by the thickness of the wheel coupling portion 120. It is formed to extend.

The first lower mold 210 is formed to surround the upper region of the lower core 200, the inner side of which is first recessed as much as the shape of the outer side of the flange portion 110 from the upper side to the lower side, and of the wheel coupling unit 120. It is formed to be recessed secondary by the outer shape.

In addition, the second lower mold 220 is formed to step inside to correspond to the lower region of the lower core 200 to surround the lower region of the lower core 200, and has an upper surface of the first lower mold 210. It is formed to abut the lower surface of the).

Here, the first lower mold 210 and the second lower mold 220 are coupled to each other by separate coupling means (not shown, for example, bolts, etc.).

In this embodiment, the first lower mold 210 and the second lower mold 220 are described as being separated and coupled by a separate coupling means, but this is only for easy replacement when the mold is worn down, and the first lower mold 210. ) And the second lower mold 220 may be integrally formed.

On the other hand, the upper core 300 is formed on the upper side of the lower core 200, the lower region is projected in a shape corresponding to the inner hollow portion of the disk connection portion 130 from the top to the bottom, the upper end of the protruding portion It is formed to extend in the horizontal direction by the thickness of the disk connection portion 130.

In addition, the upper mold 310 is formed to surround the upper core 300, the lower region is protruded in a shape corresponding to the outer shape of the disk connecting portion 130 from the top to the bottom, the protruding lower end is a flange portion ( The protruding portion formed to extend in the horizontal direction to correspond to the diameter of 110 is inserted into the first recessed area of the first lower mold 210 to generate a cavity of the hub 100.

At this time, the lower side of the side edge of the upper mold 310 and the upper surface of the first lower mold 210 may be interviewed with each other, but the interval may be increased by t in FIG. 4.

This is to apply sufficient pressure to the molten metal when forming the hub 100.

In addition, the upper core 300 and the upper mold 310 are coupled to each other by a separate coupling means (not shown, for example, bolts, etc.), and the lifting means 320 installed on one side of the upper mold 310. As a result, the upper core 300 and the upper mold 310 can be lowered.

On the other hand, the ejector ring 400 is formed in a ring shape having a predetermined thickness corresponding to the cross section of the disk connecting portion 130 is installed between the upper core 300 and the upper mold 310, the upper surface of the upper core 300 It is installed to abut the lower surface of the portion extending in the horizontal direction by the thickness of the disk connecting portion 130 of the).

As described above, since the upper side of the mold is separated into the upper core 300 and the upper mold 310 and the ejector ring 400 is formed in a circular shape, the cavity and the outside of the mold are larger than the conventional integrated upper mold and ejector pin. Since the total area of the gap between the pores is increased and the gas generated during the forming of the hub 100 is smoothly discharged, the defective product is significantly reduced, thereby having a very excellent effect.

In addition, the first elevating unit 500 is a cylindrical passage 510 which is perforated into the cavity from the upper portion of the upper core 300, and the pin is formed to have a shape corresponding to the shape of the passage 510 or Inserted into the passage 510 as a rod, the lower end is coupled to the ejector ring 400, and is constituted by a lifting pin 520 which is lifted up and down along the passage by the driving means 530 connected to the upper portion.

Here, the driving means 530 is generally a hydraulic cylinder or a linear motor or the like which is widely used, and is not necessarily limited thereto. The driving means 530 may include any configuration capable of elevating the elevating pin 520.

The ejector ring 400 is moved up and down by the first lifting unit 500 configured as described above.

The forging die for a hub of a commercial vehicle wheel according to the present invention further includes a second elevating unit 600 installed below the lower core 200 to elevate the lower core 200.

The second elevating unit 600 is composed of a connecting body connected to the lower portion of the lower core 200, and a hydraulic cylinder which is installed at the lower portion of the connecting body to lower the lower core 200 by raising and lowering the connecting body. do.

As described above, since the lower core 200 is elevated by the second elevating unit 600, a gap generated as the lower core 200 is lifted by the release agent remaining in the mold after forming the hub 100. It can be discharged to, it is effective to remove the release agent more easily.

Hereinafter, the operation of the molten metal forging die for hub of a commercial vehicle wheel according to the present invention with reference to Figures 6a to 6g.

First, as shown in FIG. 6A, when the upper core 300 and the upper mold 310 are elevated by the elevating means 320, a release agent is applied to the inside of the cavity and molten metal is injected.

Thereafter, as shown in FIG. 6B, the upper core 300 and the upper mold 310 are lowered by the elevating means 320 to apply pressure to the molten metal to form the hub 100.

At this time, the generated gas is smoothly discharged into the gap formed by the separation of the ejector ring 400, the upper core 300 and the upper mold 310 is suppressed the generation of defective products.

When the molding of the hub 100 is completed as described above, as shown in FIG. 6C, the lower core 200 is elevated by the second lifting unit 600, and at the same time, the upper core is lifted by the lifting means 320. 300 and the upper die 310 are also elevated.

At this time, the elevating means 320 is further operated for a predetermined time even if the second elevating unit 600 stops operation to completely separate the hub 100, the lower core 200 and the first lower mold 210. (See Figure 6d)

Then, the ejector ring 400 is lowered by the first elevating unit 500, whereby the hub 100 is separated from the upper core 300 and the upper mold 310 to be taken out (see FIG. 6E).

After removing the hub 100 from the mold as described above, the release agent is discharged into the lower gap generated as the lower core 200 is lifted (see FIG. 6F), and the lower core 200 is lowered, as shown in FIG. 6G. The mold is placed in the state and molten metal is injected into the cavity to produce the next molding.

The hub of a commercial vehicle wheel is molded by the above process.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be understood that various changes and modifications may be made without departing from the scope of the present invention.

10: lower mold 20: upper mold
30: ejector means 100: hub
110: flange portion 120: wheel coupling portion
130: disk connection 200: lower core
210: first lower mold 220: second lower mold
300: upper core 310: upper mold
400: ejector ring 500: first lifting unit
510: passage 520: lifting pin
530: driving means 600: second lifting unit

Claims (4)

A flange portion formed of a plate having a hollow circle shape, a wheel coupling portion formed in a hollow cylindrical shape and protruding in a vertical direction from the center of one surface of the flange portion to accommodate a bearing inside and a wheel coupled to the outside; In the molten metal forging die of the hub of a commercial vehicle wheel, which is formed in a shape and protrudes in the vertical direction from the center of the other side of the flange portion and comprises a disk connecting portion connected to the brake disk,
A lower core having an upper portion corresponding to an inner hollow portion of the wheel engaging portion;
A first lower mold formed to surround the lower core and having an inner side stepped to an outer shape of the hub;
A second lower mold formed on the inner side of the lower core so as to correspond to a shape of a lower end of the lower core and coupled to a lower portion of the first lower mold;
An upper core formed on an upper portion of the lower core, the lower region being formed in a shape corresponding to an inner hollow portion of the disc connecting portion;
An upper mold formed to surround the upper core, the inner mold being stepped into an outer shape of the hub, and having a lower portion in contact with an upper portion of the first lower mold;
An ejector ring formed in a ring shape corresponding to a cross section of the disk connection part and installed between the upper core and the upper mold;
And a first elevating unit connected to the ejector ring to elevate the ejector ring. The method of claim 1,
The forging die for the hub of a commercial vehicle wheel, characterized in that a gap is formed between the upper horizontal surface of the first lower mold and the lower horizontal surface of the upper mold. The method of claim 1,
The first lifting unit,
A passage drilled into the cavity at the top of the upper core;
The molten metal forging die for hubs of a commercial vehicle wheel, characterized in that it is installed in the passage and the lower end is coupled to the ejector ring, the lifting pin is raised and lowered along the passage by a drive means. The method of claim 1,
A molten metal forging die for a hub of a commercial vehicle wheel, characterized in that it further comprises a second lifting unit which is formed in the lower portion of the lower core to raise and lower the lower core.
KR1020100030265A 2010-04-02 2010-04-02 Forging mold for wheel hub of commercial vehicle KR101169360B1 (en)

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Application Number Priority Date Filing Date Title
KR1020100030265A KR101169360B1 (en) 2010-04-02 2010-04-02 Forging mold for wheel hub of commercial vehicle

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Application Number Priority Date Filing Date Title
KR1020100030265A KR101169360B1 (en) 2010-04-02 2010-04-02 Forging mold for wheel hub of commercial vehicle

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KR101169360B1 KR101169360B1 (en) 2012-07-30

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103949548A (en) * 2014-05-09 2014-07-30 新乡学院 Flow forming mould for difficulty in demoulding of retractable type automobile hub
KR20170019792A (en) 2015-08-12 2017-02-22 최기영 A platform system, a method, and a computer-readable storage medium for providing video contents and additional contents therewith
KR20190031018A (en) 2017-09-15 2019-03-25 주식회사 레오포즈 Reaction forging molding device of integrated wheel hub of outer ring of bearing
KR20190031729A (en) 2017-09-18 2019-03-27 주식회사 레오포즈 Multi - Forging Reaction Hardening Forming Machine
US11095954B2 (en) 2013-11-20 2021-08-17 Naver Corporation Video-providing method and video-providing system
CN114160741A (en) * 2021-11-22 2022-03-11 哈尔滨工业大学 Be applied to automatic precision forging automobile wheel hub bearing and produce demoulding structure of line

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5561351A (en) * 1978-10-30 1980-05-09 Toyota Motor Corp Casting mold device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11095954B2 (en) 2013-11-20 2021-08-17 Naver Corporation Video-providing method and video-providing system
CN103949548A (en) * 2014-05-09 2014-07-30 新乡学院 Flow forming mould for difficulty in demoulding of retractable type automobile hub
KR20170019792A (en) 2015-08-12 2017-02-22 최기영 A platform system, a method, and a computer-readable storage medium for providing video contents and additional contents therewith
KR20190031018A (en) 2017-09-15 2019-03-25 주식회사 레오포즈 Reaction forging molding device of integrated wheel hub of outer ring of bearing
KR20190031729A (en) 2017-09-18 2019-03-27 주식회사 레오포즈 Multi - Forging Reaction Hardening Forming Machine
CN114160741A (en) * 2021-11-22 2022-03-11 哈尔滨工业大学 Be applied to automatic precision forging automobile wheel hub bearing and produce demoulding structure of line

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