KR20160096270A - Apparatus for forming of hollow type - Google Patents

Apparatus for forming of hollow type Download PDF

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Publication number
KR20160096270A
KR20160096270A KR1020150017403A KR20150017403A KR20160096270A KR 20160096270 A KR20160096270 A KR 20160096270A KR 1020150017403 A KR1020150017403 A KR 1020150017403A KR 20150017403 A KR20150017403 A KR 20150017403A KR 20160096270 A KR20160096270 A KR 20160096270A
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KR
South Korea
Prior art keywords
hollow material
roller
hollow
gripping
mandrel
Prior art date
Application number
KR1020150017403A
Other languages
Korean (ko)
Inventor
허욱
장희상
이진모
김남용
이채훈
허상현
Original Assignee
주식회사 태웅
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 태웅 filed Critical 주식회사 태웅
Priority to KR1020150017403A priority Critical patent/KR20160096270A/en
Publication of KR20160096270A publication Critical patent/KR20160096270A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length

Abstract

Disclosed is a forming apparatus for a hollow apparatus. The disclosed forming apparatus for the hollow apparatus comprises: a main roller member which comes in contact with an outer surface of a hollow material to be rotated; a mandrel member which moves to an inner side of the hollow material to press the inner surface of the hollow material; a gripping roller member moved to one side in a state of gripping the hollow material; and a pressing protrusion part which protrudes from the mandrel member or the gripping roller member to form a groove on the hollow material. As such, the present invention reduces the forming defects of a ring-shaped product.

Description

[0001] APPARATUS FOR FORMING OF HOLLOW TYPE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding apparatus for a hollow material, and more particularly to a molding apparatus for a hollow material capable of improving the quality of a product molded into a ring shape.

Recently, the development of technologies related to wind energy and solar energy, which are alternative energy sources of fossil fuels, is being actively developed. Particularly, the wind turbine generator has a hollow material such as a rotor shaft for transmitting the power transmitted from the blade to a gear box and a ring member for shaft coupling. The hollow generator used in the wind turbine The material must be able to withstand harsh operating conditions in which the continuous fatigue loading and vibration are applied during the wind power generation process, so a considerable level of mechanical rigidity is required.

In the hollow-type material for wind power generation, a steel ingot heated to a high temperature in a heating furnace is pressurized by a hydraulic press to be upset, and then a cogging operation is repeatedly performed along the transverse lengthwise direction. The central portion of the cogged material is punched And a hollow is formed through a process of performing preliminary molding.

In general, a hollow material having a center portion punched out is formed in a shape of a product through cutting or the like. A large amount of material loss occurs in the cutting process, and a flow line discontinuity occurs at the cutting portion. There is a problem of poor quality. Therefore, there is a need for improvement.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 2011-0015137 (published on Feb. 15, 2011, entitled " main shaft forming device for wind power generation and main shaft manufacturing method using the same).

SUMMARY OF THE INVENTION The present invention has been made to overcome the above problems, and it is an object of the present invention to provide a molding apparatus for a hollow material which can reduce a defective molding rate of a ring-shaped product.

A molding apparatus for a hollow material according to the present invention comprises: a main roller member rotated in contact with an outer peripheral surface of a hollow material; A mandrel member that enters the hollow material and pressurizes the inner peripheral surface of the hollow material; A grip roller member moving to one side while gripping the hollow material; And a press protrusion protruding from the mandrel member or the grip roller member to form a groove in the hollow material.

In the present invention, the mandrel member includes: a mandrel body inserted into the hollow material; And a mandrel moving unit that rotatably couples the mandrel body and moves the mandrel body to adjust an interval between the mandrel body and the main roller member.

In the present invention, the pressing projection portion protrudes outwardly from the mandrel body in a convex shape.

In the present invention, the pressing protrusions are installed in a ring shape along the outer peripheral surface of the mandrel body.

In the present invention, the pressing projection portion has a curved outer peripheral surface.

In the present invention, the gripping roller member may include: a first gripping roller for gripping one side surface of the hollow material; A second gripping roller positioned between the first gripping roller and the hollow material so as to grip the other side of the hollow material; And a gripping roller moving unit coupled to the first gripping roller and the second gripping roller and moving the first gripping roller and the second gripping roller.

In the present invention, the pressing projection portion protrudes in a convex shape on the outer side of the first gripping roller.

In the present invention, the pressing protrusion is provided in a ring shape along the outer peripheral surface of the first grip roller.

In the present invention, the pressing projection portion has a curved outer peripheral surface.

In the present invention, a pair of the pair of the hollow material forming devices is symmetrical about a line connecting the rotation center of the main roller member and the rotation center of the mandrel member, And a position adjusting member for adjusting the position of the workpiece.

In the present invention, the position adjusting member may include: a position adjusting roller portion contacting the outer peripheral surface of the hollow material; And a position adjusting frame part rotatably coupled to the position adjusting roller part and moving in the lateral direction of the hollow material to adjust the position of the position adjusting roller part.

The molding apparatus for a hollow material according to the present invention forms a groove in a hollow material by using a pressing protrusion provided on a mandrel member or a grip roller member so as to prevent discontinuity of a single wire to maintain the strength of the product, Unnecessary waste of the user can be reduced.

Further, since the outer peripheral surface of the pressing projection is curved, the present invention prevents cracks and breakage of the hollow material, thereby preventing defective products.

FIG. 1 is a perspective view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to a first embodiment of the present invention.
3 is a cross-sectional view illustrating a state in which a mandrel member is inserted into a hollow material in a molding apparatus for a hollow material according to a first embodiment of the present invention.
4 is a view illustrating a state in which a mandrel member and a gripping roller member move in a forming apparatus for a hollow material according to a first embodiment of the present invention.
5 is a cross-sectional view of a hollow material after molding in a molding apparatus for a hollow material according to a first embodiment of the present invention.
FIG. 6 is a cross-sectional view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to a second embodiment of the present invention.
7 is a cross-sectional view illustrating a state in which a mandrel member is inserted into a hollow material in a molding apparatus for a hollow material according to a second embodiment of the present invention.
8 is a view showing a state in which a mandrel member and a gripping roller member move in a forming apparatus for a hollow material according to a second embodiment of the present invention.
9 is a cross-sectional view of a hollow material after molding in a molding apparatus for a hollow material according to a second embodiment of the present invention.
10 is a cross-sectional view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to a third embodiment of the present invention.
11 is a cross-sectional view showing a state in which a mandrel member is inserted into a hollow material in a molding apparatus for a hollow material according to a third embodiment of the present invention.
12 is a view showing a state in which a mandrel member and a gripping roller member move in a molding apparatus for a hollow material according to a third embodiment of the present invention.
13 is a cross-sectional view of a hollow material after molding in a molding apparatus for a hollow material according to a third embodiment of the present invention.

Hereinafter, a molding apparatus for a hollow material according to an embodiment of the present invention will be described with reference to the accompanying drawings. For convenience of explanation, a molding apparatus for a hollow material used for producing parts of a wind turbine generator is taken as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Further, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to an embodiment of the present invention.

Referring to FIG. 1, a molding apparatus 10 for a hollow material according to an embodiment of the present invention includes a main roller member 100, a mandrel member 200, a grip roller member 300, and a pressing protrusion 400 .

The main roller member 100 is rotated by a driving unit (not shown) or the like which generates rotational power in a state of being in contact with the outer peripheral surface 51 of the hollow material which is the side surface of the hollow material 50. In this embodiment, the main roller member 100 includes a main roller unit 110 and a main roller frame unit 130.

The main roller portion 110 is rotated in contact with the outer circumferential surface of the hollow material 50. In this embodiment, the main roller portion 110 is formed in a substantially cylindrical shape and is provided with rotation shafts at both ends thereof and is rotatably coupled to the main roller frame portion 130. The main roller portion 110 rotates in a state of being in contact with the outer peripheral surface 51 of the hollow material. do.

The main roller unit 110 is rotatably coupled to the main roller frame unit 130. In this embodiment, the main roller frame part 130 is formed in a substantially 'C' shape, both ends of the main roller part 110 are rotatably engaged, and a bearing is provided at a coupling part with the main roller part 110 Thereby preventing friction with the main roller portion 110.

The mandrel member 200 enters the inside of the hollow material 50 and presses the inner circumferential surface 52 of the hollow material to form a hollow. In this embodiment, the mandrel member 200 includes a mandrel body 210 and a mandrel moving portion 230.

The mandrel body 210 is inserted into the hollow material 50 and includes a metal material, and is formed into a substantially cylindrical shape. Both ends of the mandrel body 210 are rotatably coupled to the mandrel moving part 230. The mandrel body 210 having both end parts coupled thereto moves in the radial direction of the hollow material 50 by the moving part 230 do.

The mandrel moving part 230 is rotatably engaged with both ends of the mandrel body 210 and moves the mandrel body 210 to adjust the gap between the mandrel body 210 and the main roller member 100. A bearing is coupled between the mandrel moving part 230 and the mandrel body 210 so that the mandrel body 210 can be rotated.

The grip roller member 300 moves in a radial direction of the hollow material 50 at one side in a state of grasping the hollow material 50 so that the radius of the hollow material 50 is increased. 50). In this embodiment, the gripping roller member 300 includes a first gripping roller 310, a second gripping roller 330, and a gripping roller moving part 350.

The first grip roller 310 grips one side of the hollow material 50. In this embodiment, the first gripping roller 310 is exemplified by a tapered roller, and the outer circumferential surface thereof is rotated in contact with the upper side, which is one side surface 55 of the hollow material. The first gripping roller 310 is also rotated in the axial direction of the hollow material 50 in the radial direction of the hollow material 50 and in the direction parallel to the rotation axis of the hollow material 50 by the gripping roller moving part 350 Moving, and pressurizing the hollow material (50).

The second grip roller 330 is positioned below the hollow material 50 so that the hollow material 50 intervenes between the first grip roller 310 and the first grip roller 310, And the hollow material 50 is gripped together with the first grip roller 310 by pressing and supporting the lower side of the mold material 50 upward. In the present embodiment, the second gripping roller 330 is exemplified by a tapered roller, and the outer peripheral surface thereof is rotated in contact with the lower side surface of the hollow material 50.

The gripping roller shifting portion 350 is engaged with the first gripping roller 310 and the second gripping roller 330 and the hollow material 50 is inserted between the first gripping roller 310 and the second gripping roller 330, So that the diameter and height of the hollow material 50 are formed. In this embodiment, the gripping roller shifting portion 350 includes a gripping roller horizontal shifting portion 351 and a gripping roller vertical shifting portion 353.

The first gripping roller 310 and the second gripping roller 330 are engaged with the gripping roller horizontal moving part 351 and one side of the hollow material 50 is engaged with the gap between the main roller member 100 and the mandrel member 200 And the first gripping roller 310 and the second gripping roller 330 are engaged with each other while the other side of the hollow material 50 is gripped between the first gripping roller 310 and the second gripping roller 330 And moves in the radial direction of the hollow material (50) so that the diameter of the hollow material (50) is increased.

The gripping roller vertical moving part 353 is engaged with the first gripping roller 310 and moves in the axial direction of the hollow material 50 in the vertical direction to move the first gripping roller 310 up and down.

The pressing protrusions 400 protrude from the mandrel member 200 or the gripping roller member 300 to form grooves in the hollow material 50. The pressing protrusions 400 are formed in correspondence with the final product shape 59 and are provided in the mandrel member 200 or the gripping roller member 300 according to positions at which grooves are to be applied to the hollow material 50.

In this embodiment, the molding apparatus 10 for a hollow material further includes a position adjusting member 500. The position adjusting member 500 is provided symmetrically with respect to a line connecting the rotation center of the main roller member 100 and the rotation center of the mandrel member 200. The position adjusting member 500 is in contact with the side surface of the hollow material 50, The position of the hollow material 50 is adjusted. In the present embodiment, the position adjusting member 500 includes a position adjusting roller portion 510 and a position adjusting frame portion 530.

The position adjusting roller portion 510 is rotated in contact with the outer peripheral surface 51 of the hollow material. In the present embodiment, the position adjusting roller portion 510 is formed in a cylindrical shape and is raised in the vertical direction (vertical direction in FIG. 2) and rotated in contact with the outer peripheral surface 51 of the hollow material.

The position adjusting frame unit 530 is rotatably coupled to the position adjusting roller unit 510 and is movable in the radial direction of the hollow material 50 so that the center of rotation of the hollow material 50 can be moved The rotation center of the mandrel member 200 and the rotation center of the mandrel member 200 are aligned.

FIG. 2 is a cross-sectional view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to a first embodiment of the present invention. FIG. 3 is a sectional view of a hollow molding apparatus for a hollow material according to the first embodiment of the present invention. FIG. 4 is a view showing a state in which a mandrel member and a gripping roller member move in a forming apparatus for a hollow material according to a first embodiment of the present invention, and FIG. 4 5 is a cross-sectional view of the hollow material after molding in the molding apparatus for a hollow material according to the first embodiment of the present invention.

1 to 5, a pressing protrusion 401 is provided on the mandrel member 200 in the molding apparatus 11 for a hollow material according to the first embodiment of the present invention. In the case of the first embodiment, the cross section of the final product shape 59 corresponds to the "C" shape, and this shape can be formed by mounting the pressing projection 401 on the mandrel member 200 or the grip roller member 300 However, the pressurizing protrusion 401 is mounted on the mandrel member 200 to be molded.

In the first embodiment, the pressing projection 401 protrudes outwardly of the mandrel body 210 in a convex shape. As described above, the mandrel body 210 is located inside the hollow material 50. The gap between the mandrel body 210 and the main roller unit 110 is adjusted by the mandrel moving unit 230 and is moved toward the main roller unit 110 side And the inner peripheral surface 52 of the hollow material is formed into the hollow of the pressurized hollow material 50.

When the press protrusions 401 are installed along the outer circumferential surface of the mandrel body 210 in a ring shape, the press protrusions 401 together with the mandrel body 210 press the inner circumferential surface of the hollow material 50, So that the shape of the hollow material 50 is processed.

FIG. 6 is a cross-sectional view schematically showing a configuration of a main part of a molding apparatus for a hollow material according to a second embodiment of the present invention, and FIG. 7 is a cross-sectional view of a hollow molding apparatus for a hollow material according to a second embodiment of the present invention. FIG. 8 is a view showing a state in which a mandrel member and a gripping roller member move in a forming apparatus for a hollow material according to a second embodiment of the present invention, and FIG. 8 9 is a sectional view of a hollow material after molding in a molding apparatus for a hollow material according to a second embodiment of the present invention.

6 to 9, in the molding apparatus 12 for a hollow material according to the second embodiment of the present invention, unlike in the molding apparatus 11 for a hollow material in the first embodiment, the pressing protrusions 402 And the height of the lower end face of the hollow material 50 is interposed between the upper and lower end faces of the hollow material 50. [

The pressing protrusions 402 of the second embodiment protrude in a convex shape outside the mandrel body 210 so that the heights of the upper end and the lower end of the pressing protrusions 402 are respectively equal to the height of the upper surface of the hollow material 50 And a lower side height, thereby forming concave grooves on the inner peripheral surface of the hollow material.

The pressing protrusions 400 may have various shapes in a shape of being combined with the mandrel member 200 and pressurizing the hollow material 50. The positions of the pressing protrusions 400 and the positions of the pressing protrusions 400 may be different from those of the first and second embodiments. It is needless to say that the number can be changed.

For example, the pressing protrusions 401 and 402 in the first and second embodiments may be positioned on the lower side or the upper side with respect to the substantially center of the mandrel body 210, So that a plurality of grooves can be simultaneously formed on the inner side of the hollow material 50.

FIG. 10 is a cross-sectional view schematically showing a configuration of a substantial part of a molding apparatus for a hollow material according to a third embodiment of the present invention. FIG. 11 is a cross- FIG. 12 is a view showing a state in which a mandrel member and a gripping roller member move in a forming apparatus for a hollow material according to a third embodiment of the present invention, and FIG. 13 is a cross-sectional view of a hollow material after molding in a molding apparatus for a hollow material according to a third embodiment of the present invention.

Referring to FIGS. 10 to 13, in the molding apparatus 13 for a hollow material according to the third embodiment of the present invention, a pressing protrusion 403 is provided on the gripping roller member 300. Specifically, the pressing protrusion 403 of the third embodiment protrudes in a convex shape outside the first grip roller 310 to press the upper surface of the hollow material 50 and press the upper surface of the hollow material 50 Thereby forming concave grooves.

In the third embodiment, when the press protrusion 403 is installed along the outer peripheral surface of the first grip roller 310 in a ring shape, the first grip roller 310 and the one side surface 55 of the hollow material are pressed The upper side surface shape processing of the hollow material 50 is performed. A plurality of the pressing protrusions 403 may be provided along the rotation axis direction of the first grip roller 310 to form a plurality of grooves on the upper surface of the hollow material 56 at the same time.

As a result, in the present embodiment, the hollow material forming apparatus 10 does not cut the hollow material 50 to form the hollow of the hollow material 50 but press-molds the hollow material 50 using the pressing protrusion 400, The single wire 58 of the hollow material 50 is maintained uninterrupted even after molding.

That is, in the present embodiment, the hollow material 50 formed by the hollow molding machine 10 maintains the strength of the material because the single wire 58, which is the flow of the material structure, maintains the continuous state.

In the present embodiment, since the outer peripheral surface 410 of the pressing projection is formed of the curved surface R, the load is prevented from concentrating on the local portion of the hollow material 50, Can be prevented from being generated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. will be.

In addition, although a molding apparatus for a hollow material used in the production of parts for a wind turbine has been described as an example, the molding apparatus for a hollow material according to the present invention can also be used in other production plants for producing a hollow material have. Accordingly, the true scope of the present invention should be determined by the following claims.

10, 11, 12, 13: Molding device for hollow material
50: hollow material 51: outer peripheral surface of hollow material 52: inner peripheral surface of hollow material 55: one side of hollow material 56: other side of hollow material 58: single wire 59:
100: main roller member 110: main roller unit 130: main roller frame member
200: mandrel member 210: mandrel body 230:
300: grip roller member 310: first grip roller 330: second grip roller 350: grip roller moving part
400, 401, 402, 403: pressing projection part 410: outer peripheral surface of pressing projection
500: Position adjusting member 510: Position adjusting roller unit 530: Position adjusting frame unit

Claims (11)

A main roller member rotated in contact with an outer peripheral surface of the hollow material;
A mandrel member that enters the hollow material and pressurizes the inner peripheral surface of the hollow material;
A grip roller member moving to one side while gripping the hollow material; And
A pressing protrusion protruding from the mandrel member or the grip roller member to form a groove in the hollow material;
Wherein the hollow molding material molding apparatus comprises:
The apparatus of claim 1, wherein the mandrel member comprises:
A mandrel body inserted into the hollow material; And
A mandrel moving part for rotatably coupling the mandrel body and moving the mandrel body to adjust an interval between the mandrel body and the main roller member;
Wherein the hollow molding material molding apparatus comprises:
3. The method of claim 2,
Wherein the pressing projection portion protrudes outwardly from the mandrel body in a convex shape.
The press machine according to claim 2,
And a ring-like shape is formed along an outer circumferential surface of the mandrel body.
The press machine according to claim 2,
And the outer circumferential surface is formed into a curved surface.
3. The image forming apparatus according to claim 2,
A first gripping roller for gripping one side of the hollow material;
A second gripping roller positioned between the first gripping roller and the hollow material so as to grip the other side of the hollow material; And
A gripping roller moving part coupled to the first gripping roller and the second gripping roller and moving the first gripping roller and the second gripping roller;
Wherein the hollow molding material molding apparatus comprises:
7. The apparatus according to claim 6, wherein the press-
Wherein the first gripping roller is protruded in a convex shape on the outer side of the first gripping roller.
7. The apparatus according to claim 6, wherein the press-
Wherein the first gripping roller is provided in a ring shape along an outer circumferential surface of the first gripping roller.
7. The apparatus according to claim 6, wherein the press-
And the outer circumferential surface is formed into a curved surface.
10. The method according to any one of claims 1 to 9,
A position adjusting member which is provided symmetrically with respect to a line connecting the rotation center of the main roller member and the rotation center of the mandrel member and contacts the side surface of the hollow material to adjust the position of the hollow material;
Further comprising a plurality of openings formed in the cavity.
11. The apparatus according to claim 10,
A position adjusting roller portion contacting the outer peripheral surface of the hollow material; And
A position adjusting frame part rotatably coupled to the position adjusting roller part and moving in a lateral direction of the hollow material to adjust a position of the position adjusting roller part;
Wherein the hollow molding material molding apparatus comprises:
KR1020150017403A 2015-02-04 2015-02-04 Apparatus for forming of hollow type KR20160096270A (en)

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Application Number Priority Date Filing Date Title
KR1020150017403A KR20160096270A (en) 2015-02-04 2015-02-04 Apparatus for forming of hollow type

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018124356A1 (en) * 2016-12-30 2018-07-05 서강대학교산학협력단 Ring-shaped component having bonded dissimilar materials and manufacturing method therefor
KR102181242B1 (en) * 2020-06-26 2020-11-20 윤찬필 Raceway softzone finishing device of bearing for wind generator
KR102413382B1 (en) * 2021-12-30 2022-06-27 주식회사 아라(Ara) A system turning bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018124356A1 (en) * 2016-12-30 2018-07-05 서강대학교산학협력단 Ring-shaped component having bonded dissimilar materials and manufacturing method therefor
KR102181242B1 (en) * 2020-06-26 2020-11-20 윤찬필 Raceway softzone finishing device of bearing for wind generator
KR102413382B1 (en) * 2021-12-30 2022-06-27 주식회사 아라(Ara) A system turning bearing

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