KR20120049425A - Jig apparatus for preventing welding distortion of pipe - Google Patents

Jig apparatus for preventing welding distortion of pipe Download PDF

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Publication number
KR20120049425A
KR20120049425A KR1020100110225A KR20100110225A KR20120049425A KR 20120049425 A KR20120049425 A KR 20120049425A KR 1020100110225 A KR1020100110225 A KR 1020100110225A KR 20100110225 A KR20100110225 A KR 20100110225A KR 20120049425 A KR20120049425 A KR 20120049425A
Authority
KR
South Korea
Prior art keywords
pipe
clamp
jig
supported
welding
Prior art date
Application number
KR1020100110225A
Other languages
Korean (ko)
Other versions
KR101495373B1 (en
Inventor
김대순
신상범
이동주
정인식
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR20100110225A priority Critical patent/KR101495373B1/en
Publication of KR20120049425A publication Critical patent/KR20120049425A/en
Application granted granted Critical
Publication of KR101495373B1 publication Critical patent/KR101495373B1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0533Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • B23Q3/062Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B23Q3/064Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding elongated workpieces, e.g. pipes, bars or profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/02Assembly jigs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/14Clamps for work of special profile
    • B25B5/147Clamps for work of special profile for pipes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/04Tubular or hollow articles
    • B23K2101/10Pipe-lines

Abstract

The present invention discloses a pipe welding deformation preventing jig device for preventing deformation of a pipe generated when welding a connecting pipe for branching to a pipe.
The present invention includes a lower clamp positioned at the bottom and supported on the lower surfaces of both ends of the pipe; The upper clamp is positioned above the lower clamp and is supported on the upper surface of the pipe. The lower clamp and the upper clamp are formed of a body portion and a flange portion extending and formed from one end of the body portion. Forming grooves are formed in accordance with the shape of the pipe to be supported at the end of the part is formed so that when the flanges are coupled between both ends of the pipe is bent.

Description

Jig Apparatus for Preventing Welding Distortion of Pipe}

The present invention relates to a jig device for preventing deformation of pipe welding, and more particularly, to prevent deformation of a pipe generated when welding a connection pipe for branching, which is provided in plural along the longitudinal direction of the pipe.

Generally, various fluid transport pipes are connected with a plurality of branch welders along the length of the pipe to distribute fluid.

At this time, since the branch connection pipe is coupled to the outer surface of the pipe by welding, deformation of the pipe occurs as the welding is performed.

In other words, when the branch connecting pipe is welded to the pipe, deformation occurs in which the pipe itself bends in the welding direction.

Therefore, conventionally, in order to reduce the deformation caused by welding, the deflection load is added in the opposite direction to bend in advance to compensate for the bending moment generated by the welding to correct the deformation. Linear heating using a heating torch.

However, since the linear heating has a heat effect on the pipe, it may adversely affect the pipe itself, and furthermore, it is difficult to uniformly adjust the bending degree of the pipe according to the linear heating state.

Accordingly, the present invention is to solve the above-mentioned conventional problems, an object of the present invention is to bend in the opposite direction of the welding deformation in advance before welding the branch connection pipe to the pipe, and then after welding by performing welding It is to provide a pipe welding deformation prevention jig to prevent the deformation of the pipe.

Solution to Problem The present invention for achieving the above object, and the lower clamp is located on the lower surface of both ends of the pipe; An upper clamp positioned on an upper portion of the lower clamp and supported on an upper surface of the pipe;

The lower clamp and the upper clamp are composed of a body portion and a flange portion extending and formed from one end of the body portion,

Forming grooves are formed in accordance with the shape of the pipe to be supported while being formed at the end of the body portion is coupled to the flange portion is to bend both ends of the pipe.

In addition, before the lower clamp and the upper clamp is fastened to the pipe, the flange further comprises a support that is supported at a distance so as to have a gap.

In addition, the flange portion has a structure in which a fastening member for adjusting the gap is coupled through the flange portion so as to be coupled in a state in which the gap is narrowed.

In addition, the radius of curvature of the mounting groove formed in the body portion of the lower clamp is a structure that is formed larger than the radius of curvature of the pipe.

As described above, the present invention can be bent in the opposite direction to the deformation direction of the pipe during welding deformation in consideration of the deformation during welding of the branch connection pipe in the longitudinal direction of the pipe to maintain a horizontal state without the pipe after welding. It would be.

In addition, by bending all the pipes having a diameter of various sizes can be carried out (bending) operation can be prevented deformation caused during welding.

1 is a perspective view showing a state in which the jig device according to the present invention is installed on both sides of the pipe.
Figure 2a is a front view of the jig device according to the present invention installed on both sides of the pipe, showing a state before the fastening.
Figure 2b is a view showing a state in which the jig device is fastened in the state of Figure 2a.
3 is a view showing a state in which both ends of the pipe by the fastening of the jig device according to the present invention.

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

1 is a perspective view showing the jig according to the present invention installed on both sides of the pipe.

As shown in the figure, the jig device 1 according to the present invention has a lower clamp 10 which is located at the lower side and is supported on the lower surfaces of both ends of the pipe P, and on the upper portion of the lower clamp 10. It consists of an upper clamp 20 is supported on the upper surface of the pipe (P).

The lower clamp 10 and the upper clamp 20 are composed of body parts 11 and 21 and flange parts 12 and 22 extending from one end of the body parts 11 and 21.

In FIG. 1, the state before the lower clamp 10 and the upper clamp 20 are completely fastened is illustrated, so that the branch connection pipe P1 is welded in the longitudinal direction of the upper surface of the pipe P. It should not be shown, but is shown for convenience of description.

Also, as shown in FIGS. 2A and 3, semi-circular seating grooves 11a and 21a are formed in the centers of the body parts 11 and 21 so as to match the shape of the pipes P supported therein. Before the lower clamp 10 and the upper clamp 20 are fastened to the pipe P, the gap 12 is spaced along the longitudinal direction of the pipe P such that the flanges 12 and 22 have a gap g. In the lower position of the branch connecting pipe (P1) located at both ends of the branch connecting pipe (P1) to be coupled to a plurality, it is provided with a separate support (40) at a distance (d).

The gap g may be adjusted according to the height H of the support 40. In addition, both sides of the support 40 may be formed with a reinforcement to maintain a solid support state.

In addition, the radius of curvature of the seating groove 11a of the lower clamp 10 is larger than the radius of curvature of the pipe P to be welded to accommodate pipes having various diameters.

In addition, a fastening member 30 for adjusting the gap is fastened through the flange parts 12 and 22 to the flange parts 12 and 22 so as to be coupled in a state in which the gap g is narrowed.

In addition, the body portion 11 positioned at the bottom may be provided with a reinforcing rod 13 to be stably supported.

The fastening member 30 may be a bolt that is a conventional means. However, the present invention is not limited thereto, and various other fastening members may be formed.

In addition, base plates 14 and 41 may be formed at lower portions of the lower clamp 10 and the support 40, respectively, for stable support.

Meanwhile, instead of the fastening member 30, a cylinder (hydraulic or pneumatic) (not shown) is installed to adjust the gap g so that the lower clamp 10 moves the upper clamp 20 in a fixed state. By narrowing the gap g so as to be in contact, the pipe P may be bent, or the wedge member (not shown) may be inserted into the seating groove 21a of the upper clamp 20 so that the gap may be adjusted.

According to the present invention having such a configuration, as shown in FIG. 3, the jig device 1 is respectively coupled to both ends of the pipe P, and the support 40 is supported at the bottom of the pipe P. When the fastening member 30 is tightened through the lower clamp 10 constituting the jig device 1 and the flange portions 12 and 22 of the upper clamp 20, the flanges 12 and 22 are formed between them. As the gap g is narrowed, the flange portions 12 and 22 come into contact with each other. At the same time, both ends of the pipe P, which were in a horizontal state before the fastening, are bent downward.

At this time, a separate support 40 is supported on the lower portion of the first branch connecting pipe P1 and the last branch connecting pipe P1, so that both ends are bent in the lower direction about the support 40. FIG. do.

In this state, when the entire circumference of the plurality of branch connecting pipes P1 is welded and joined at intervals on the upper surface along the longitudinal direction of the pipe P, the pipe (in the upper direction on the drawing) in the welding portion (W) direction P) is about to bend and the deformation is about to occur.

Herein, the present invention allows the pipe P to be bent in the opposite direction to the deformation direction during welding through the jig device 1, and then performs welding, thereby compensating for the amount of deformation that is originally generated, thereby completing the welding operation. When the device 1 is dismantled, the pipe P is kept in a horizontal state without being deformed.

Although the present invention has been described for the embodiments of the present invention based on the accompanying drawings for convenience, various modifications and variations are possible without departing from the scope of the technical idea of the present invention, and such variations and modifications are claims of the present invention. Inclusion within is self-evident.

d: distance
g: interval
H: height
P: Pipe
P1: branch connector
W: weld
1: jig device
10: lower clamp
11,21: body part
11a, 21a: settling groove
12,22: Flange
13: reinforcement
20: upper clamp
30: fastening member
40: support

Claims (4)

  1. A lower clamp 10 positioned below and supported by lower surfaces of both ends of the pipe P;
    The upper clamp 20 is positioned on the upper clamp 10 and is supported on the upper surface of the pipe P,
    The lower clamp 10 and the upper clamp 20 are composed of body parts 11 and 21 and flange parts 12 and 22 extending from one end of the body parts 11 and 21. Lose,
    Forming grooves (11a) (21a) is formed to match the shape of the pipe (P) to be formed and supported at the end of the body portion (11) (21) and the flanges (12, 22) when the pipes ( A pipe welding deformation preventing jig device, characterized in that both ends of P) are bent.
  2. The method according to claim 1,
    Before the lower clamp 10 and the upper clamp 20 are fastened to the pipe P, a support 40 is supported at a distance d so that the flanges 12 and 22 have a distance g. Pipe welding deformation prevention jig device further comprises.
  3. The method according to claim 1,
    The flange part 12, 22 is a fastening member 30 for adjusting the gap so as to be coupled in a state in contact with the gap (g) is narrowed through the flange part 12, 22, characterized in that the pipe is fastened Jig device for welding deformation prevention.
  4. The method according to claim 1,
    Jig device for preventing deformation of pipe welding, characterized in that the curvature radius of the seating groove (11a) formed in the body portion 11 of the lower clamp (10) is larger than the radius of curvature of the pipe (P).
KR20100110225A 2010-11-08 2010-11-08 Jig Apparatus for Preventing Welding Distortion of Pipe KR101495373B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20100110225A KR101495373B1 (en) 2010-11-08 2010-11-08 Jig Apparatus for Preventing Welding Distortion of Pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20100110225A KR101495373B1 (en) 2010-11-08 2010-11-08 Jig Apparatus for Preventing Welding Distortion of Pipe

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Publication Number Publication Date
KR20120049425A true KR20120049425A (en) 2012-05-17
KR101495373B1 KR101495373B1 (en) 2015-02-24

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103028973A (en) * 2012-12-14 2013-04-10 芜湖市中兴机械技术开发有限公司 Beam central tube drilling tool for automotive dashboard
CN103350356A (en) * 2013-06-27 2013-10-16 江苏南铸科技股份有限公司 Processing clamp for high-pressure pump gun barrel
CN103831601A (en) * 2012-11-22 2014-06-04 苏州工业园区高登威科技有限公司 Assembly cable fastening device
CN105729030A (en) * 2016-04-26 2016-07-06 中国海洋石油总公司 Combined tool for manufacturing manifolds
CN106271316A (en) * 2016-08-31 2017-01-04 苏州浩锐石英科技有限公司 Quartz boat automatic sheet-feeding welding fixture
CN106514105A (en) * 2016-12-22 2017-03-22 佛山市景和汽配有限公司 Clamp used for welding elbow pipes and special-shaped plates
CN106514104A (en) * 2016-12-22 2017-03-22 佛山市景和汽配有限公司 Welding device for automobile bent pipe
CN106541244A (en) * 2016-12-23 2017-03-29 佛山市景和汽配有限公司 A kind of fixture for automotive muffler elbow pipe welding
CN106584169A (en) * 2016-12-23 2017-04-26 河南省西峡汽车水泵股份有限公司 Machining and locating method and locating clamps for combined type exhaust manifold air inflow flange end face
CN107030625A (en) * 2017-06-20 2017-08-11 苏州博众精工科技有限公司 A kind of pipe part positioner
CN108098648A (en) * 2017-11-27 2018-06-01 江苏振光电力设备制造有限公司 A kind of easy to operate not isometrical pipe fitting both ends coupling flange frock
KR101884172B1 (en) * 2017-03-27 2018-08-02 주식회사대영금속 Jig for roatation processing
KR20190084439A (en) * 2018-01-08 2019-07-17 현대위아 주식회사 Stand for supporting shaft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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CN106112862B (en) * 2016-08-12 2018-03-16 岳西县恒意机械有限公司 A kind of skeleton for frock clamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH091377A (en) * 1995-06-14 1997-01-07 Eihou Bussan Kk Jig for preventing deformation of welding base metal
KR20090095185A (en) * 2008-03-05 2009-09-09 현대중공업 주식회사 Jig for heat transformation prevention on the pipe welding
KR101126116B1 (en) 2009-12-09 2012-03-29 주식회사 에이치케이알 Chuck clamp welder

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103831601A (en) * 2012-11-22 2014-06-04 苏州工业园区高登威科技有限公司 Assembly cable fastening device
CN103028973A (en) * 2012-12-14 2013-04-10 芜湖市中兴机械技术开发有限公司 Beam central tube drilling tool for automotive dashboard
CN103350356A (en) * 2013-06-27 2013-10-16 江苏南铸科技股份有限公司 Processing clamp for high-pressure pump gun barrel
CN105729030A (en) * 2016-04-26 2016-07-06 中国海洋石油总公司 Combined tool for manufacturing manifolds
CN106271316A (en) * 2016-08-31 2017-01-04 苏州浩锐石英科技有限公司 Quartz boat automatic sheet-feeding welding fixture
CN106514105B (en) * 2016-12-22 2019-04-02 佛山市景和汽配有限公司 A kind of fixture for bend pipe and sketch plate welding
CN106514105A (en) * 2016-12-22 2017-03-22 佛山市景和汽配有限公司 Clamp used for welding elbow pipes and special-shaped plates
CN106514104A (en) * 2016-12-22 2017-03-22 佛山市景和汽配有限公司 Welding device for automobile bent pipe
CN106584169A (en) * 2016-12-23 2017-04-26 河南省西峡汽车水泵股份有限公司 Machining and locating method and locating clamps for combined type exhaust manifold air inflow flange end face
CN106541244A (en) * 2016-12-23 2017-03-29 佛山市景和汽配有限公司 A kind of fixture for automotive muffler elbow pipe welding
KR101884172B1 (en) * 2017-03-27 2018-08-02 주식회사대영금속 Jig for roatation processing
CN107030625B (en) * 2017-06-20 2018-12-28 博众精工科技股份有限公司 A kind of pipe part positioning device
CN107030625A (en) * 2017-06-20 2017-08-11 苏州博众精工科技有限公司 A kind of pipe part positioner
CN108098648A (en) * 2017-11-27 2018-06-01 江苏振光电力设备制造有限公司 A kind of easy to operate not isometrical pipe fitting both ends coupling flange frock
KR20190084439A (en) * 2018-01-08 2019-07-17 현대위아 주식회사 Stand for supporting shaft

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