KR102362275B1 - Method of forming burring part of heat exchanger tube - Google Patents
Method of forming burring part of heat exchanger tube Download PDFInfo
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- KR102362275B1 KR102362275B1 KR1020210018814A KR20210018814A KR102362275B1 KR 102362275 B1 KR102362275 B1 KR 102362275B1 KR 1020210018814 A KR1020210018814 A KR 1020210018814A KR 20210018814 A KR20210018814 A KR 20210018814A KR 102362275 B1 KR102362275 B1 KR 102362275B1
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- tube
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- burring tool
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
- B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Jigs For Machine Tools (AREA)
Abstract
본발명은 열교환기 튜브의 버링부 형성방법에 관한 것으로, 튜브고정용 유압실린더를 이용하여 지그장치(20)위의 튜브(TUBE)(10)를 고정하는 단계;
버링툴장치(100)에 의하여 버링툴( BURRING TOOL)(120)을 튜브 선단 내부에 밀어넣는 단계;
버링툴을 빼내는 단계;로 이루어지는 것으로,
본발명은 버링툴장치로 튜브선단부에 버링부를 용이하고 신속하면서도 정확한 치수로 형성할 수 있는 현저한 효과가 있다.The present invention relates to a method for forming a burring part of a heat exchanger tube, comprising: fixing a tube (TUBE) (10) on a jig device (20) using a hydraulic cylinder for fixing the tube;
pushing the burring tool (BURRING TOOL) 120 into the tip of the tube by the burring tool device 100;
Taking out the burring tool; consists of,
The present invention has a remarkable effect that the burring part can be easily, quickly and accurately formed at the tip of the tube with a burring tool device.
Description
본발명은 열교환기 튜브의 버링부 형성방법에 관한 것으로, 보다 상세하게는 버링툴장치로 튜브선단부에 버링부를 용이하고 신속하면서도 정확한 치수로 형성할 수 있는 열교환기 튜브의 버링부 형성방법에 관한 것이다.The present invention relates to a method for forming a burring portion of a heat exchanger tube, and more particularly, to a method for forming a burring portion for a heat exchanger tube that can easily, quickly and accurately form a burring portion at the tip of a tube with a burring tool device. .
일반적으로 열교환기 튜브의 확관작업은 번들에 튜브를 삽입하여 임팩트 툴을 이용하여 버링작업을 하지만 경도가 높은 재질의 경우 버링이 제대로 되지 않아서 확관작업이 어렵다. 그리고 종래특허기술의 일례로서 등록특허공보 등록번호 10-0919480호에는 전열튜브(1)의 단부 내측에 삽입된 확관볼(9)을 고압수의 압력으로 밀어내어 전열튜브(1)의 관경을 확대시킴으로서 전열튜브(1)의 외주면에 전열핀(2)이 고정되도록 한 확관장치에 있어서, 상기 확관장치(10)는, 고압수 분사용 확관노즐(4)이 중심부를 관통하여 삽입 설치되는 장치바디(11)와, 상기 확관노즐(4)이 내부로 삽입되도록 장치바디(11)의 전방측에 연결 설치되는 튜브클램퍼(17)와, 상기 장치바디(11)의 외측에서 실린더브라켓(14)에 의하여 장치바디(11)와 연결 설치되는 클램핑실린더(12)와, 상기 클램핑실린더(12)의 피스톤로드(13)와 연결되어 튜브클램퍼(17)를 따라 이동 가능하게 설치되는 클램핑허브(15)로 이루어지며, 상기 튜브클램퍼(17)는 전방측으로 갈수록 외경이 증대되는 테이퍼진 파이프로 형성되고, 상기 튜브클램퍼(17)에는 다수 개의 조임용 절개부(17a)가 길이 방향을 따라 절개 형성되며, 상기 클램핑허브(15)의 중앙부에는 튜브클램퍼(17)의 조임작동을 위하여 튜브클램퍼(17)의 외관 형상과 대응되는 쐐기식의 테이퍼통로(15a)가 관통 형성되는 것을 특징으로 하는 핀튜브용 전열튜브 확관장치가 공개되어 있다.In general, the tube expansion of the heat exchanger tube is performed by inserting the tube into the bundle and burring using an impact tool. And as an example of the prior art, in Patent Publication No. 10-0919480, the tube diameter of the heat transfer tube 1 is enlarged by pushing the expansion tube 9 inserted inside the end of the heat transfer tube 1 with the pressure of high pressure water. In the tube expansion device in which the heat transfer fins (2) are fixed to the outer peripheral surface of the heat transfer tube (1) by making (11), a
또한 등록특허공보 등록번호 10-1235019호에는 전열튜브 확관작업용 이송장치 및 그것이 설치된 전열튜브 확관작업장치가 공개되어 있다.Also, in Patent Registration No. 10-1235019, a transfer device for heat transfer tube expansion work and a heat transfer tube expansion work device installed therein are disclosed.
그러나 상기 종래기술들은 튜브선단부에 버링부를 형성하는데 치수가 부정확하거나 작업이 느린 단점이 있었다.However, the prior art has disadvantages in that the size is incorrect or the operation is slow to form a burring part at the tip of the tube.
따라서 본발명은 상기와 같은 문제점을 해결하고자 안출된 것으로, 본발명은 버링툴장치로 튜브선단부에 버링부를 용이하고 신속하면서도 정확한 치수로 형성할 수 있는 열교환기 튜브의 버링부 형성방법을 제공하고자 하는 것이다.Therefore, the present invention has been devised to solve the above problems, and the present invention is to provide a method for forming a burring part of a heat exchanger tube that can easily, quickly and accurately form a burring part on the tip of a tube with a burring tool device. will be.
본발명은 열교환기 튜브의 버링부 형성방법에 관한 것으로, 튜브고정용 유압실린더를 이용하여 지그장치(20)위의 튜브(TUBE)(10)를 고정하는 단계;The present invention relates to a method for forming a burring part of a heat exchanger tube, comprising: fixing a tube (TUBE) (10) on a jig device (20) using a hydraulic cylinder for fixing the tube;
버링툴장치(100)에 의하여 버링툴( BURRING TOOL)(120)을 튜브 선단 내부에 밀어넣는 단계;Pushing the burring tool (BURRING TOOL) (120) inside the tube tip by the burring tool device (100);
버링툴을 빼내는 단계;로 이루어지는 것을 특징으로 한다.Taking out the burring tool; characterized in that it consists of.
따라서 본발명은 버링툴장치로 튜브선단부에 버링부를 용이하고 신속하면서도 정확한 치수로 형성할 수 있는 현저한 효과가 있다.Therefore, the present invention has a remarkable effect of being able to easily, quickly and accurately form a burring part at the tip of a tube with a burring tool device.
도 1은 본발명의 버링툴장치 분해 및 결합도
도 2는 본발명의 튜브버링공정도
도 3은 본발명의 버링후 튜브단면도
도 4는 본발명의 튜브 버링부 상세도
도 5는 본발명의 버링툴 단면도
도 6은 본발명의 버링툴장치 몸체 평면도
도 7은 본발명의 버링툴장치 몸체 정면도
도 8은 본발명의 버링툴장치 몸체 우측면도
도 9는 본발명의 홀더 정면도
도 10은 본발명의 홀더 측면도
도 11은 본발명의 홀더가 버링툴장치 몸체에 삽입된 상태도1 is an exploded view of the burring tool device of the present invention;
2 is a tube burring process diagram of the present invention;
3 is a cross-sectional view of the tube after burring of the present invention;
4 is a detailed view of the tube burring part of the present invention
5 is a cross-sectional view of the burring tool of the present invention;
6 is a plan view of the burring tool device body of the present invention;
7 is a front view of the burring tool device body of the present invention;
8 is a right side view of the burring tool device body of the present invention;
9 is a front view of the holder of the present invention;
10 is a side view of the holder of the present invention;
11 is a state diagram in which the holder of the present invention is inserted into the body of the burring tool device;
본발명은 열교환기 튜브의 버링부 형성방법에 관한 것으로, 튜브고정용 유압실린더를 이용하여 지그장치(20)위의 튜브(TUBE)(10)를 고정하는 단계;The present invention relates to a method for forming a burring part of a heat exchanger tube, comprising: fixing a tube (TUBE) (10) on a jig device (20) using a hydraulic cylinder for fixing the tube;
버링툴장치(100)에 의하여 버링툴( BURRING TOOL)(120)을 튜브 선단 내부에 밀어넣는 단계;Pushing the burring tool (BURRING TOOL) (120) inside the tube tip by the burring tool device (100);
버링툴을 빼내는 단계;로 이루어지는 것을 특징으로 한다.Taking out the burring tool; characterized in that it consists of.
상기 버링툴장치(100)는 몸체(110)와 버링툴(120)로 구성되는 것을 특징으로 한다.The
또한, 버링툴장치(100)는 유압을 이용하여 버링툴을 전후진 시키는 것을 특징으로 한다.In addition, the
본발명을 첨부도면에 의해 상세히 설명하면 다음과 같다. 도 1은 본발명의 버링툴장치 분해 및 결합도, 도 2는 본발명의 튜브버링공정도, 도 3은 본발명의 버링후 튜브단면도, 도 4는 본발명의 튜브 버링부 상세도, 도 5는 본발명의 버링툴 단면도, 도 6은 본발명의 버링툴장치 몸체 평면도, 도 7은 본발명의 버링툴장치 몸체 정면도, 도 8은 본발명의 버링툴장치 몸체 우측면도, 도 9는 본발명의 홀더 정면도, 도 10은 본발명의 홀더 측면도, 도 11은 본발명의 홀더가 버링툴장치 몸체에 삽입된 상태도이다.The present invention will be described in detail with reference to the accompanying drawings as follows. 1 is an exploded view of the burring tool device of the present invention and a coupling diagram, FIG. 2 is a tube burring process diagram of the present invention, FIG. 3 is a sectional view of a tube after burring of the present invention, FIG. is a burring tool cross-sectional view of the present invention, Figure 6 is a plan view of the burring tool device body of the present invention, Figure 7 is a front view of the burring tool device body of the present invention, Figure 8 is a right side view of the burring tool device body of the present invention, Figure 9 is this view A front view of the holder of the present invention, FIG. 10 is a side view of the holder of the present invention, and FIG. 11 is a state diagram in which the holder of the present invention is inserted into the body of the burring tool device.
본발명은 스테인레스 튜브 및 듀플렉스 튜브 등 경도가 높은 튜브의 확관을 위한 튜브 버링작업 툴이다. 본발명은 유압장치를 이용한 버링툴로 튜브를 버링작업한 후 번들에 삽입하는 것이다.The present invention is a tube burring tool for expanding tubes with high hardness, such as stainless tubes and duplex tubes. The present invention is to insert the tube into the bundle after burring the tube with a burring tool using a hydraulic device.
곧 작업공정을 순차적으로 기재하면,If you describe the work process sequentially,
1. TUBE를 지그장치에 올려놓는다1. Put the tube on the jig device.
2. 버링툴(BURRING TOOL)을 버링툴장치 몸체에 설치한다.2. Install the burring tool on the body of the burring tool device.
TUBE 두께에 따라 버링툴이 달라지면 규격에 맞게 조립한다.If the burring tool changes according to the tube thickness, assemble it according to the standard.
3.홀더( HOLDER)를 상부에서 조립하여 BURRING TOOL이 빠지지 않도록 한다.3. Assemble the holder from the top so that the burring tool does not come off.
4. 튜브고정용 관용의 유압실린더 장치를 이용하여 지그에 놓인 TUBE를 고정한다. 유압실린더 장치는 튜브의 표면을 두 개의 유압실린더로 파지한다.4. Fix the tube placed on the jig using the hydraulic cylinder device for tube fixing. The hydraulic cylinder device grips the surface of the tube with two hydraulic cylinders.
5. 유압장치의 유압을 이용하여 BURRING TOOL을 TUBE 내부에 밀어넣는다.5. Push the BURRING TOOL into the tube using the hydraulic pressure of the hydraulic system.
6. TOOL을 빼낸다.6. Take out the tool.
7. BURRING이 완료된 TUBE는 BUNDLE에 삽입한다.7. TUBE that has completed BURRING is inserted into BUNDLE.
본발명의 튜브는 지름 16.8mm이며, 버링후 상기 버링부분의 지름은 18mm가 된다. 상기 버링부의 길이는 좌단에서 9mm 까지는 18mm이 되고 버링부에 연이어 경사부가 3mm정도 형성된다. 상기 경사부의 각도는 17°이다.The tube of the present invention has a diameter of 16.8 mm, and the diameter of the burring portion after burring is 18 mm. The length of the burring part is 18mm from the left end to 9mm, and the inclined part is formed in succession to the burring part by about 3mm. The angle of the inclined portion is 17°.
버링툴장치는 몸체와, 상기 몸체선단에 형성되는 수평 홈에 삽입되며 튜브를 버링하는 버링툴로 이루어진다.The burring tool device includes a body and a burring tool inserted into a horizontal groove formed at the tip of the body and burring a tube.
버링툴의 전후진은 유압에 의해 작동된다. 상기 유압작동에 의해 버링툴이 전후진하는 구성은 관용의 유압장치를 적용하는 것으로서 자세한 설명은 생략한다. 그리고 상기 몸체는 후방에 유압장치에 결합되는 결합축이 형성되고, 전면은 홈이 형성되며, 표면에는 홀더가 삽입되는 홀더삽입홈이 형성된다.The forward and backward movement of the burring tool is operated by hydraulic pressure. The configuration in which the burring tool moves forward and backward by the hydraulic operation is to apply a conventional hydraulic device, and a detailed description thereof will be omitted. And the body is formed with a coupling shaft coupled to the hydraulic device at the rear, a groove is formed on the front surface, and a holder insertion groove into which the holder is inserted is formed on the surface.
홀더는 직사각형 플레이트의 하단에는 둥근 오목홈이 형성되고 상부에는 사각홀이 형성되어, 둥근 오목홈부가 버링툴의 외주면에 접촉되고, 그러므로 홀더가 홀더삽입홈에 삽입되어 선단이 버링툴의 단턱과 버링부사이에 위치하여 버링툴이 몸체에서 전후이송되지 못하게 고정한다.As for the holder, a round concave groove is formed at the bottom of the rectangular plate and a square hole is formed in the upper part, so that the round concave groove is in contact with the outer peripheral surface of the burring tool, and therefore the holder is inserted into the holder insertion groove so that the tip is aligned with the step and burring of the burring tool. It is located between the parts and fixes the burring tool so that it cannot be transferred back and forth from the body.
버링툴의 형상은 삽입부인 선단에서부터 후방으로 일정길이는 튜브내에 삽입되게 지름이 튜브보다 작게 형성되고 버링형성부가 형성되되 버링형성부는 튜브관경보다 지름이 크게 형성되며, 버링부 이후는 지름이 작아졌다가 지름이 커지며 고정턱이 형성되며, 고정턱 이후부터 지름이 작아지게 형성된다.The shape of the burring tool has a diameter smaller than that of the tube so that it is inserted into the tube for a certain length from the tip, which is the insertion part, to the rear. The diameter increases and a fixed jaw is formed, and the diameter becomes smaller after the fixed jaw.
상기 버링툴의 삽입부는 전단부보다 후단부가 지름이 크게 2단으로 성형될 수 있다. The insertion part of the burring tool may be formed in two stages having a rear end having a larger diameter than the front end.
다른 실시례로서 본발명은 버링툴장치 작동시의 유압장치 압력을 체크하고, 상기 압력이 설정치를 초과하면, 튜브의 구멍에 맞지않게 삽입되는 것으로, 판단하고, 제어부는 유압장치의 가동을 중지한다. 상기 유압장치의 작동시 압력과 튜브고정용 유압실린더의 압력 차이가 설정치 이상일 경우에도 버링툴이 튜브의 구멍에 맞지않게 삽입되는 것으로, 판단하고, 유압실린더의 가동을 중지한다. As another embodiment, the present invention checks the hydraulic pressure during operation of the burring tool device, and when the pressure exceeds the set value, it is determined that the pressure is not properly inserted into the hole of the tube, and the control unit stops the operation of the hydraulic system . Even when the pressure difference between the pressure and the pressure of the hydraulic cylinder for fixing the tube during operation of the hydraulic device is greater than the set value, it is determined that the burring tool is not properly inserted into the hole of the tube, and the operation of the hydraulic cylinder is stopped.
따라서 본발명은 버링툴장치로 튜브선단부에 버링부를 용이하고 신속하면서도 정확한 치수로 형성할 수 있는 현저한 효과가 있다.Therefore, the present invention has a remarkable effect of being able to easily, quickly and accurately form a burring part at the tip of a tube with a burring tool device.
10 : 튜브 20 : 지그장치
30 : 튜브고정용 유압실린더 40 : 유압장치
50 : 홀더 51 : 오목홈
52 : 홀
100 : 버링툴장치 110 : 버링툴장치 몸체
120 : 버링툴 121 : 삽입부
122 : 버링형성부
123 : 고정턱10: tube 20: jig device
30: hydraulic cylinder for fixing tube 40: hydraulic device
50: holder 51: concave groove
52: hall
100: burring tool device 110: burring tool device body
120: burring tool 121: insertion part
122: burring forming part
123: fixed jaw
Claims (3)
버링툴장치(100)에 의하여 버링툴( BURRING TOOL)(120)을 튜브 선단 내부에 밀어넣는 단계;
버링툴(120)을 빼내는 단계;로 이루어지는 것으로, 상기 버링툴장치(100)는 버링툴장치 몸체(110)와 버링툴(120)로 구성되며, 유압을 이용하여 버링툴(120)을 전후진 시키는 것을 특징으로 하는 열교환기 튜브의 버링부 형성방법에 있어서,
상기 튜브고정용 유압실린더를 이용하여 지그장치(20)위의 튜브(TUBE)(10)를 고정하는 단계;는
튜브(TUBE)(10)를 지그장치에 올려놓은 후, 버링툴( BURRING TOOL)(120)을 버링툴장치 몸체(110)에 설치하되, 튜브(TUBE)(10) 두께에 따라 버링툴(120)이 달라지면 규격에 맞게 조립한 후, 홀더(HOLDER)를 상부에서 조립하여 버링툴(120)이 빠지지 않도록 한 후, 튜브고정용 유압실린더 장치를 이용하여 지그에 놓인 튜브(TUBE)(10)를 고정하되, 튜브고정용 유압실린더 장치는 튜브(TUBE)(10)의 표면을 두 개의 유압실린더로 파지하는 것이며,
상기 버링툴장치(100)에 의하여 버링툴( BURRING TOOL)(120)을 튜브(TUBE)(10) 선단 내부에 밀어넣는 단계;는 유압장치의 유압을 이용하여 버링툴(120)을 튜브(TUBE)(10) 내부에 밀어넣는 것이며,
버링툴(120)을 빼내는 단계;는 버링툴(120)을 튜브(TUBE)(10)에서 빼내는 것이며, 상기 버링(BURRING)이 완료된 튜브(TUBE)(10)는 번들(BUNDLE)에 삽입하는 것으로,
상기 버링툴장치(100)의 몸체(110)는 후방에 유압장치에 결합되는 결합축이 형성되고, 전면은 홈이 형성되며, 표면에는 홀더가 삽입되는 홀더삽입홈이 형성되며,
홀더는 직사각형 플레이트의 하단에는 둥근 오목홈부가 형성되고 상부에는 사각홀이 형성되어, 둥근 오목홈부가 버링툴(120)의 외주면에 접촉되므로 홀더가 홀더삽입홈에 삽입되어 선단이 버링툴(120)의 단턱인 고정턱(123)과 버링형성부(122) 사이에 위치하여 버링툴(120)이 몸체에서 전후이송되지 못하게 고정하며,
버링툴(120)의 형상은 삽입부인 선단에서부터 후방으로 일정길이는 튜브(TUBE)(10)내에 삽입되게 지름이 튜브(TUBE)(10)보다 작게 형성되고 버링형성부(122)가 형성되되 버링형성부(122)는 튜브(TUBE)(10) 관경보다 지름이 크게 형성되며, 버링형성부(122) 이후는 지름이 작아졌다가 지름이 커지며 고정턱(123)이 형성되며, 고정턱(123) 이후부터 지름이 작아지게 형성되며,
제어부는 버링툴장치(100) 작동시의 유압장치 압력을 체크하고, 상기 압력이 설정치를 초과하면, 튜브(TUBE)(10)의 구멍에 맞지 않게 삽입되는 것으로, 판단하고, 유압장치의 가동을 중지하며, 상기 유압장치의 작동시 압력과 튜브고정용 유압실린더의 압력 차이가 설정치 이상일 경우에도 버링툴(120)이 튜브(TUBE)(10)의 구멍에 맞지 않게 삽입되는 것으로, 판단하고, 유압실린더의 가동을 중지하는 것을 특징으로 하는 열교환기 튜브의 버링부 형성방법fixing the tube (TUBE) (10) on the jig device (20) using a hydraulic cylinder device for fixing the tube;
pushing the burring tool (BURRING TOOL) 120 into the tip of the tube by the burring tool device 100;
and withdrawing the burring tool 120, wherein the burring tool device 100 includes a body 110 and a burring tool 120, and moves the burring tool 120 back and forth using hydraulic pressure. In the method of forming a burring part of a heat exchanger tube, characterized in that
Fixing the tube (TUBE) 10 on the jig device 20 using the hydraulic cylinder for fixing the tube;
After the tube (TUBE) (10) is placed on the jig device, a burring tool (BURRING TOOL) 120 is installed on the body 110 of the burring tool device, but the burring tool 120 according to the thickness of the tube (TUBE) 10 ) is different, assemble the holder according to the standard, assemble the holder from the top to prevent the burring tool 120 from falling out, and then use the hydraulic cylinder device for fixing the tube to remove the tube (TUBE) (10) placed on the jig. However, the hydraulic cylinder device for fixing the tube is to hold the surface of the tube (TUBE) (10) with two hydraulic cylinders,
The step of pushing the burring tool 120 into the tip of the tube 10 by the burring tool device 100; )(10) is to push it inside,
The step of pulling out the burring tool 120; is to take the burring tool 120 out of the tube (TUBE) 10, and the tube (TUBE) 10 on which the burring is completed is inserted into the bundle (BUNDLE). ,
The body 110 of the burring tool device 100 has a coupling shaft coupled to the hydraulic device at the rear, a groove is formed on the front side, and a holder insertion groove into which the holder is inserted is formed on the surface,
In the holder, a round concave groove is formed at the bottom of the rectangular plate and a square hole is formed in the upper portion. It is located between the fixed jaw 123, which is a step of the burring forming part 122, and fixes the burring tool 120 so that it cannot be transferred back and forth from the body,
The shape of the burring tool 120 is formed with a diameter smaller than the tube (TUBE) 10 to be inserted into the tube (TUBE) 10 for a certain length from the tip, which is the insertion part, to the rear, and the burring forming part 122 is formed. The ring forming part 122 is formed to have a larger diameter than the tube diameter of the tube (TUBE) 10 , and after the burring forming part 122 , the diameter decreases and then the diameter increases and a fixed jaw 123 is formed, and the fixed jaw 123 is formed. ), the diameter becomes smaller from then on,
The control unit checks the pressure of the hydraulic system during operation of the burring tool device 100, and when the pressure exceeds the set value, it is determined that the pressure is not inserted into the hole of the tube (TUBE) 10, and the operation of the hydraulic system is stopped When the hydraulic device is operated, it is determined that the burring tool 120 is not inserted into the hole of the tube 10 even when the pressure difference between the pressure and the pressure of the hydraulic cylinder for fixing the tube is greater than the set value. Method of forming a burring part of a heat exchanger tube, characterized in that stopping the operation of the cylinder
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050053173A (en) * | 2003-12-02 | 2005-06-08 | 대한민국(창원대학교) | Tube expander of heat exchange tube |
| KR20140002736U (en) * | 2012-10-31 | 2014-05-09 | 한전케이피에스 주식회사 | Apparatus for enlarging diameter of a tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050053173A (en) * | 2003-12-02 | 2005-06-08 | 대한민국(창원대학교) | Tube expander of heat exchange tube |
| KR20140002736U (en) * | 2012-10-31 | 2014-05-09 | 한전케이피에스 주식회사 | Apparatus for enlarging diameter of a tube |
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