CN101214607B - Method for manufacturing inner fin copper pipe - Google Patents
Method for manufacturing inner fin copper pipe Download PDFInfo
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- CN101214607B CN101214607B CN2008100692238A CN200810069223A CN101214607B CN 101214607 B CN101214607 B CN 101214607B CN 2008100692238 A CN2008100692238 A CN 2008100692238A CN 200810069223 A CN200810069223 A CN 200810069223A CN 101214607 B CN101214607 B CN 101214607B
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- broaching
- cutter
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- copper
- inner fin
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Abstract
The present invention relates to a fabrication method of an internally finned copper tube. A copper billet tube is first straightened and stretched, a molded pre-compressed section is established by utilizing a positioning mold, and an inner conical ring surface is formed on the inner wall of the copper billet tube, so that the guide cylindrical edges of a broaching cutter are evenly contacted with the inner wall for convenient cut-in in order to ensure the same directions and sizes of the formed internal fins and improve the service life of the broaching cutter. The initial position of the broaching cutter is adjusted and utilized to correspond to the position of the entrance of the reducing section of the positioning mold, that is, the initial position is at the separating position of the copper material in a broaching deformation area and the inner wall of the copper billet tube, the inner wall of the copper tube is warped after being formed along the fin-erecting curved surface ofthe broaching cutter, the number of inner fins molded in one step is equal to the number of the edges of the broaching cutter, and the included angle (a) between the tangent of each erected inner finand an axis is between 65 degrees and 80 degrees. In order to increase the density of the inner fins, a cooling medium rotational flow channel is established, and two adjacent section fins are staggerly arranged at 12 degrees to 15 degrees, so, in the course of the n plus 1th broaching, the broaching cutter is rotated around the axis of the inner wall of the copper tube by 12 degrees to 15 degrees, and each time the broaching cutter moves back and stops, the broaching cutter is rotated by 12 degrees to 15 degrees. In the course of the n plus 2th broaching, the formed fin and the previous section fin are staggered at 12 degrees to 15 degrees. By continuous broaching, a gap continuously spiraled forward is formed on the inner wall of the copper tube.
Description
Technical field:
The present invention relates to a kind of preparation method of inner fin copper pipe.
Background technology
Along with large-scale central air-conditioning and freezing unit are popularized and output increases, the heat exchanger volume of air-conditioning and unit refrigerant and water heat-shift requires more and more forr a short time, and efficient is more and more higher, and cost of manufacture is more and more lower.Exchange in the hot system piping at refrigerant and water,, make its surface heat exchange area increase by 3 times, improve heat exchange efficiency by the inner fin that rises at the copper pipe internal broaching.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can adopt the production of automation equipment continuous batch, combine copper pipe and stretch and the two aspect technology of broaching the manufacture method of efficient, stable inner fin copper pipe.
In order to achieve the above object, the present invention realizes like this, a kind of manufacture method of inner fin copper pipe, it is characterized in that: earlier the alignment of copper base pipe is stretched, utilize positioning module to set up moulding precommpression section, form the inner cone anchor ring at copper base inside pipe wall, the guiding cylinder edge of the cutter that is beneficial to broach is convenient to cut with its inwall even contact, consistent to guarantee formed inner fin direction and size, the service life of improving the broaching cutter; Adjust the original position of broaching blade, make it corresponding with position, positioning module reducer porch, the copper material that promptly is positioned at the broaching deformed area separates the place with copper base inside pipe wall, the copper pipe inwall plays perk behind the wing curved surface forming along the broaching cutter, the interior fin of once-forming is identical with the cutting edge quantity of broaching cutter, and inner fin plays the angle a of tangent line behind the wing and shaft centre line between 65 °-80 °; For increasing the density of inner fin, set up refrigerant rotation direction flow channel, two adjacent cross section fins are got 12 °-15 ° and are interspersed, for this reason, during the n+1 time broaching, the broaching cutter is around 12 °-15 ° of copper pipe inwall central axis rotations, the broaching cutter is whenever stepped back when stopping, and promptly rotates 12 °-15 °; During the n+2 time broaching, 12 °-15 ° of the inner fin of moulding and previous cross section fins are staggered; By continuous broaching, form continuous helical space forward at the copper pipe inwall.
Advantage of the present invention is, can adopt the production of automation equipment continuous batch, combines copper pipe and stretches and the two aspect technology of broaching, and the product of producing is efficient, stable, can satisfy numerous clients' demand.
Description of drawings
Fig. 1 is the structural representation of copper pipe;
Fig. 2 is the enlarged drawing of the local A of Fig. 1;
Fig. 3 is the structural representation of worked copper pipe unit;
Fig. 4 is the enlarged drawing of the local B of Fig. 3.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is done further detailed description:
Embodiment one
It is a kind of preparation method of inner fin copper pipe, step is: shown in Fig. 1 to 4, earlier 1 alignment of copper base pipe is stretched, utilize positioning module 2 to set up moulding precommpression section 11, form inner cone anchor ring 12 at copper base inside pipe wall, guiding cylinder edge and its inwall even contact of cutter 3 of being beneficial to broach is convenient to incision, and be consistent to guarantee formed inner fin direction and size, the service life of improving the broaching cutter; Adjust the original position of broaching blade, make it corresponding with position, positioning module reducer porch, the copper material that promptly is positioned at the broaching deformed area separates the place with copper base inside pipe wall, the copper pipe inwall plays perk behind the wing curved surface forming along the broaching cutter, the interior fin 13 of once-forming is identical with the cutting edge quantity of broaching cutter, inner fin plays tangent line behind the wing and the angle a of shaft centre line is 65 °, and in the present embodiment, the cutting edge of broaching cutter is 8; For increasing the density of inner fin, set up refrigerant rotation direction flow channel, two adjacent cross section fins are got 12 ° and are interspersed, and for this reason, during the n+1 time broaching, the broaching cutter is around 12 ° of copper pipe inwall central axis rotations, and the broaching cutter is whenever stepped back when stopping, and promptly rotates 12 °; During the n+2 time broaching, 12 ° of the inner fin of moulding and previous cross section fins are staggered; By continuous broaching, form continuous helical space forward at the copper pipe inwall.In order to guarantee the quality of inner fin copper pipe, its length generally is no more than 3 meters long.
Embodiment two
It is a kind of preparation method of inner fin copper pipe, step is: shown in Fig. 1 to 4, earlier 1 alignment of copper base pipe is stretched, utilize positioning module 2 to set up moulding precommpression section 11, form inner cone anchor ring 12 at copper base inside pipe wall, guiding cylinder edge and its inwall even contact of cutter 3 of being beneficial to broach is convenient to incision, and be consistent to guarantee formed inner fin direction and size, the service life of improving the broaching cutter; Adjust the original position of broaching blade, make it corresponding with position, positioning module reducer porch, the copper material that promptly is positioned at the broaching deformed area separates the place with copper base inside pipe wall, the copper pipe inwall plays perk behind the wing curved surface forming along the broaching cutter, the interior fin 13 of once-forming is identical with the cutting edge quantity of broaching cutter, inner fin plays tangent line behind the wing and the angle a of shaft centre line is 75 °, and in the present embodiment, the cutting edge of broaching cutter is 12; For increasing the density of inner fin, set up refrigerant rotation direction flow channel, two adjacent cross section fins are got 13 ° and are interspersed, and for this reason, during the n+1 time broaching, the broaching cutter is around copper pipe inwall central axis ROT13 °, and the cutter of broaching is whenever stepped back when stopping, i.e. ROT13 °; During the n+2 time broaching, 13 ° of the inner fin of moulding and previous cross section fins are staggered; By continuous broaching, form continuous helical space forward at the copper pipe inwall.In order to guarantee the quality of inner fin copper pipe, its length generally is no more than 3 meters long.
Embodiment three
It is a kind of preparation method of inner fin copper pipe, step is: shown in Fig. 1 to 4, earlier 1 alignment of copper base pipe is stretched, utilize positioning module 2 to set up moulding precommpression section 11, form inner cone anchor ring 12 at copper base inside pipe wall, guiding cylinder edge and its inwall even contact of cutter 3 of being beneficial to broach is convenient to incision, and be consistent to guarantee formed inner fin direction and size, the service life of improving the broaching cutter; Adjust the original position of broaching blade, make it corresponding with position, positioning module reducer porch, the copper material that promptly is positioned at the broaching deformed area separates the place with copper base inside pipe wall, the copper pipe inwall plays perk behind the wing curved surface forming along the broaching cutter, the interior fin 13 of once-forming is identical with the cutting edge quantity of broaching cutter, inner fin plays tangent line behind the wing and the angle a of shaft centre line is 80 °, and in the present embodiment, the cutting edge of broaching cutter is 16; For increasing the density of inner fin, set up refrigerant rotation direction flow channel, two adjacent cross section fins are got 15 ° and are interspersed, and for this reason, during the n+1 time broaching, the broaching cutter is around 15 ° of copper pipe inwall central axis rotations, and the broaching cutter is whenever stepped back when stopping, and promptly rotates 15 °; During the n+2 time broaching, 15 ° of the inner fin of moulding and previous cross section fins are staggered; By continuous broaching, form continuous helical space forward at the copper pipe inwall.In order to guarantee the quality of inner fin copper pipe, its length generally is no more than 3 meters long.
Claims (1)
1. the preparation method of an inner fin copper pipe, it is characterized in that: earlier the alignment of copper base pipe is stretched, utilize positioning module to set up moulding precommpression section, form the inner cone anchor ring at copper base inside pipe wall, guiding cylinder edge and its inwall even contact of cutter of being beneficial to broach is convenient to incision, consistent to guarantee formed inner fin direction and size, the service life of improving the broaching cutter; Adjust the original position of broaching blade, make it corresponding with position, positioning module reducer porch, the copper material that promptly is positioned at the broaching deformed area separates the place with copper base inside pipe wall, the copper pipe inwall plays perk behind the wing curved surface forming along the broaching cutter, the interior fin of once-forming is identical with the cutting edge quantity of broaching cutter, and inner fin plays the angle a of tangent line behind the wing and shaft centre line between 65 °-80 °; For increasing the density of inner fin, set up refrigerant rotation direction flow channel, two adjacent cross section fins are got 12 °-15 ° and are interspersed, for this reason, during the n+1 time broaching, the broaching cutter is around 12 °-15 ° of copper pipe inwall central axis rotations, the broaching cutter is whenever stepped back when stopping, and promptly rotates 12 °-15 °; During the n+2 time broaching, 12 °-15 ° of the inner fin of moulding and previous cross section fins are staggered; By continuous broaching, form continuous helical space forward at the copper pipe inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100692238A CN101214607B (en) | 2008-01-05 | 2008-01-05 | Method for manufacturing inner fin copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100692238A CN101214607B (en) | 2008-01-05 | 2008-01-05 | Method for manufacturing inner fin copper pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101214607A CN101214607A (en) | 2008-07-09 |
| CN101214607B true CN101214607B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100692238A Active CN101214607B (en) | 2008-01-05 | 2008-01-05 | Method for manufacturing inner fin copper pipe |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105252220B (en) * | 2015-11-05 | 2018-05-25 | 苏州三信机器制造有限公司 | Cold core machine major diameter guide post processing process |
| CN113441795B (en) * | 2021-06-30 | 2022-09-16 | 柳州展维热工科技有限公司 | Small-diameter thin-wall spiral high-rib inner finned tube machining equipment and machining method |
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