CN109967585A - A kind of high teeth internal screwed copper tube of low Mick weight heavy wall and its machining tool - Google Patents
A kind of high teeth internal screwed copper tube of low Mick weight heavy wall and its machining tool Download PDFInfo
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- CN109967585A CN109967585A CN201910244693.1A CN201910244693A CN109967585A CN 109967585 A CN109967585 A CN 109967585A CN 201910244693 A CN201910244693 A CN 201910244693A CN 109967585 A CN109967585 A CN 109967585A
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- Prior art keywords
- screw thread
- spinning
- tooth
- ring
- core print
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Classifications
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
-
- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
Abstract
The present invention provides a kind of high teeth internal screwed copper tube of the heavy heavy wall of low Mick and its machining tools, belong to the technical field of metal product.A kind of low Mick weight high teeth internal screwed copper tube of heavy wall includes the tubular body that the screw thread of several helixes arrangement is provided on copper material and inner wall, and the bottom wall thickness of main body is 0.2~0.21mm, the a height of 0.18mm of tooth, realize the production of the low Mick weight of the high teeth internal screwed copper tube of heavy wall under identical Energy Efficiency Ratio, material more saves；In addition, provide a kind of machining tool for the above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall, the outer diameter of screw thread core print is set between 6.8~7.5mm, reduce the resistance being subject to during drawing copper tubes, avoid disconnected Guan Wenti, the high radius of corner of tooth of core print screw thread is set as 0.03~0.045mm, the radius of corner of bottom of the tooth is 0.04~0.055mm, bottom of the tooth is greater than the high radius of corner of tooth, convenient for pipe at tooth, working modulus from pipe to finished product is reduced using the spinning apparatus of the non-standard steel ball of six balls, meet the manufacture demand of the low Mick weight high teeth internal screwed copper tube of heavy wall.
Description
Technical field
The present invention relates to the technical fields of metal product, are specifically related to a kind of low Mick weight high teeth internal screwed copper tube of heavy wall
And its machining tool.
Background technique
The inner screw thread copper pipe particularity big by the inner wall contact area of its structure, Energy Efficiency Ratio is high, is widely used in sky
Tune field.
Currently, the inner screw thread copper pipe application amount of 7mm is larger in copper pipe industry, still, due to the limitation of production technology, gram
Weight is generally at 50 grams or so, and its bottom wall thickness is all in the thickness of 0.23mm or more, so that the purchase cost of producer increases, thus
The production cost and sale price for leading to inner screw thread copper pipe increase, and are unfavorable for the development of industry.
Summary of the invention
For the above-mentioned problems in the prior art, it is now intended to provide a kind of low Mick weight high teeth inner thread copper of heavy wall
Pipe, copper pipe outer diameter are 7mm, and bottom wall thickness is 0.20~0.21mm, and is 0.18mm by tooth high setting, so that in copper pipe efficiency
Mick weight is effectively reduced in the case where than not reducing, to save the amount of purchase of copper, reduce production cost and sell valence
Lattice promote the development of industry；It is additionally provided with a kind of machining tool for the above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall,
By being arranged the outer diameter of screw thread core print between 6.8~7.5mm, compare the helical angle of copper pipe and the helical angle of screw thread core print
Difference is little, reduces the resistance during drawing copper tubes, reduce copper pipe because Mick weight is small and the case where through normal off pipe, meanwhile,
Spinning is carried out using the non-standard steel ball of six balls in spinning ring, effectively reduces working modulus of the copper pipe from main pipe to finished product, in addition, will
The outer diameter of spinning ring is set between 35~42mm, and internal diameter is set between 22~28mm, is effectively reduced spinning
The weight of ring, so that spinning is with small vibration and steady, reduces enhanced stretch resistance so that its rotary inertia is small, so as to avoid
Because scalding the high problem of curve caused by vibration, yield rate is improved.
Specific technical solution is as follows:
A kind of low Mick weight high teeth internal screwed copper tube of heavy wall, has the feature that, comprising: the master of the copper material of tubulose
Body, body outer diameter 7mm are provided with several screw threads along main body length direction arrangement on the inner wall of main body, and each screw thread is equal
Helically line is arranged, and the bottom wall thickness where the spiral shell bottom of screw thread is 0.2~0.21mm, and a height of 0.18mm of tooth of screw thread, meanwhile,
The addendum angle of screw thread is 11~15 °, and the helical angle of screw thread is 30~42 °, and the rack number of each main body internal screw thread is 55~65.
A kind of machining tool, for processing the above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall, including pre-stretching mould, travelling
Core print, screw thread core print, spinning apparatus and sizing stretching die, pre-stretching mould, spinning apparatus and sizing stretching die are sequentially arranged,
And pipe to be processed sequentially passes through pre-stretching mould, spinning apparatus and sizing stretching die, the end link connection of floating core head
There is screw thread core print, and floating core head and screw thread core print are all set in pipe, and floating core head is located in the range of pre-stretch film,
Screw thread core print is located in the range of spinning apparatus, has the feature that, the outer diameter of screw thread core print is 6.8~7.5mm, thread core
Several core print screw threads arranged along its length are provided on the outer wall of head, and each core print screw thread helically arrange by line,
And the rounded setting of tooth height and bottom of the tooth of core print screw thread, and the high radius of corner of tooth is 0.03~0.045mm, the fillet of bottom of the tooth
Radius is 0.04~0.055mm, and the radius of corner of bottom of the tooth is greater than the high radius of corner of tooth, also, spinning apparatus is that six balls are nonstandard
The spinning structure of quasi- steel ball.
Above-mentioned a kind of machining tool, wherein the radius of corner of bottom of the tooth is greater than the high 0.01~0.03mm of radius of corner of tooth.
Above-mentioned a kind of machining tool, wherein spinning apparatus includes spinning ring and steel ball, and spinning ring is two symmetrically arranged
Spinning divides ring to form, and spinning divides ring to be arranged in a ring, and spinning divides the side for dividing ring on the inner wall of ring and respectively close to another spinning
Slot rolling is offered, and after two spinning divide ring to be oppositely arranged, steel ball is located at two spinning and divides in the slot rolling of ring.
Above-mentioned a kind of machining tool, wherein 4~8 steel balls are provided in spinning ring.
Above-mentioned a kind of machining tool, wherein steel ball size is 7.2~8.2mm.
Above-mentioned a kind of machining tool, wherein the outer diameter of spinning ring is 35~42mm.
Above-mentioned a kind of machining tool, wherein the internal diameter of spinning ring is 22~28mm.
The good effect of above-mentioned technical proposal is:
The above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall, the bottom wall thickness of copper pipe is 0.2~0.21mm, and tooth is a height of
0.18mm, so that it reduces the Mick weight of copper pipe in the case where guaranteeing that Energy Efficiency Ratio does not reduce, to reduce the buying of copper
Amount, so that reducing the production cost and sale price of copper pipe in 7mm inner screw thread copper pipe field, promoting the development of industry；
Additionally, it is provided a kind of machining tool for the above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall, by the outer diameter of screw thread core print
It is arranged between 6.8~7.5mm, so that the core print screw thread on the helical angle of the screw thread actually obtained on copper pipe and screw thread core print
Helical angle difference is smaller, so that the resistance that copper pipe is subject to during the drawing process is effectively reduced, to reduce because of copper pipe
Mick weight it is small and the problem of cause through normal off pipe, in addition, the high radius of corner of the tooth of the core print screw thread on screw thread core print is arranged
Between 0.03~0.045mm, and the radius of corner of bottom of the tooth is arranged between 0.04~0.055mm, makes it easier in pipe
On at tooth, and using the spinning apparatus of the non-standard steel ball of six balls carry out spinning operation, effectively reduce from pipe to finished product
Working modulus reduces enhanced stretch resistance, meanwhile, the outer diameter of spinning ring is set for 35~42mm between, internal diameter for 22~
Between 28mm, the weight of spinning ring is effectively reduced, so that rotary inertia and with small vibration, rotation of the spinning apparatus under high-speed rotation
Press it is more steady, so as to avoid production inner screw thread copper pipe because vibration and caused by the high problem of flaw detection curve, improve
The yield rate of the copper pipe of the low Mick weight high teeth inner thread of heavy wall.
Detailed description of the invention
Fig. 1 is a kind of structure chart of the embodiment of low Mick weight high teeth internal screwed copper tube of heavy wall of the invention；
Fig. 2 is a preferred embodiment of the present invention the structure chart of screw thread core print；
Fig. 3 is the partial sectional view in Fig. 2 at line A-A；
Fig. 4 is a preferred embodiment of the present invention the cross-sectional view of spinning apparatus.
In attached drawing: 1, inner screw thread copper pipe；2, screw thread core print；21, core print screw thread；211, tooth is high；212, bottom of the tooth；3, spinning fills
It sets；31, spinning ring；32, steel ball；311, spinning divides ring；312, slot rolling.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
It applies example combination attached drawing 1 and technical solution provided by the invention is specifically addressed to attached drawing 4, but the following contents is not as of the invention
It limits.
Fig. 1 is a kind of structure chart of the embodiment of low Mick weight high teeth internal screwed copper tube of heavy wall of the invention.Such as Fig. 1 institute
Show, the low Mick weight high teeth internal screwed copper tube of heavy wall provided in this embodiment includes: the main body of the copper material of tubulose, and body outer diameter is
7mm belongs to the field of 7mm copper pipe, and several screw threads along main body length direction arrangement are provided on the inner wall of main body, often
One screw thread helically arrange by line, forms inner screw thread copper pipe 1, and the bottom wall thickness where the spiral shell bottom of screw thread is 0.2~0.21mm, and
The a height of 0.18mm of the tooth of screw thread, meanwhile, the addendum angle of screw thread is 11~15 °, and the helical angle of screw thread is 30~42 °, each main body
The rack number of internal screw thread is 55~65, compared to inner screw thread copper pipe 1 at present on the market, in the case that Energy Efficiency Ratio does not reduce
The Mick weight of copper pipe is reduced, so that factory reduces the amount of purchase of copper, so that in 7mm inner screw thread copper pipe fields,
Reduce the production cost and sale price of inner screw thread copper pipe 1, the more conducively development of industry.
In addition, the present embodiment additionally provides a kind of processing work for the above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall
Tool, including pre-stretching mould, floating core head, screw thread core print 2, spinning apparatus 3 and sizing stretching die, are pre-stretched mould, spinning apparatus 3
And sizing stretching die is sequentially arranged, and pipe to be processed sequentially passes through pre-stretching mould, spinning apparatus 3 and sizing and stretches
Mould, an end link of floating core head is connected with screw thread core print 2, and floating core head and screw thread core print 2 are all set in pipe, and swims
Dynamic core print is located in the range of pre-stretch film, and screw thread core print 2 is located in the range of spinning apparatus 3, so that pipe is by pre-stretching
After the effect of mould and floating core head, the processing through spinning apparatus 3 and screw thread core print 2 again, most process afterwards through sizing stretching die and
Obtain the inner screw thread copper pipe 1 for meeting demand.
Fig. 2 is a preferred embodiment of the present invention the structure chart of screw thread core print；Fig. 3 is the partial cross in Fig. 2 at line A-A
Figure；Fig. 4 is a preferred embodiment of the present invention the cross-sectional view of spinning apparatus.As shown in Figure 2 to Figure 3, the outer diameter of screw thread core print 2 is
6.8~7.5mm is provided with several core print screw threads 21 arranged along its length, and each core print on the outer wall of screw thread core print 2
Screw thread 21 helically arrange by line, so that core print screw thread 21 is distributed on screw thread core print 2, and under the action of spinning apparatus 3, spiral shell
Core print screw thread 21 on line core print 2 is spun on the inner wall of copper pipe, to form inner screw thread copper pipe 1, and sets thread core
First 2 outer diameter is 6.8~7.5mm, be may make on helical angle and the screw thread core print 2 of the screw thread actually obtained after spinning on copper pipe
The helical angle difference of core print screw thread 21 is smaller, so that the resistance that copper pipe is subject to during the drawing process is effectively reduced, to reduce
Because the Mick weight of copper pipe is small and the problem of cause through normal off pipe, meet the low high teeth internal screwed copper tube 1 of Mick weight heavy wall
Manufacture demand；In addition, tooth high 211 and the rounded setting of bottom of the tooth 212 of the core print screw thread 21 on screw thread core print 2, and tooth is high by 211
Radius of corner be 0.03~0.045mm, the radius of corner of bottom of the tooth 212 is 0.04~0.055mm, the radius of corner of bottom of the tooth 212
High greater than tooth 211 radius of corner, so that being easier on pipe in spinning process into tooth, also, spinning apparatus 3 uses
The spinning structure of the non-standard steel ball of six balls, effectively reduces the working modulus from pipe to finished product, by working modulus from original 18%
15% or so till now is reduced, enhanced stretch resistance is reduced, further such that the machining tool meets the low Mick weight high tooth of heavy wall
The manufacture demand of inner screw thread copper pipe 1.
Specifically, the radius of corner of the bottom of the tooth 212 of the core print screw thread 21 on screw thread core print 2 is greater than the fillet half of tooth high 211
0.01~0.03mm of diameter, so that being easier to be easier to meet the low Mick weight high teeth inner thread copper of heavy wall at tooth on the inner wall of copper pipe
The manufacture demand of pipe 1.
More specifically, as shown in figure 4, spinning apparatus 3 includes spinning ring 31 and steel ball 32, spinning ring 31 symmetrically sets for two
The spinning set divides ring 311 to form, and spinning divides ring 311 to be arranged in a ring, and spinning divides on the inner wall of ring 311 and respectively close to another rotation
After pressure divides the side of ring 311 to offer slot rolling 312, and two spinning divide ring 311 to be oppositely arranged, steel ball 32 is located at two spinning and divides ring
In 311 slot rolling 312, it has been convenient for the dismounting of spinning apparatus 3, later maintenance and maintenance are more convenient, meanwhile, it is set in spinning ring 31
It is equipped with 4~8 steel balls 32, it is preferred that be provided with 6 steel balls 32 in spinning ring 31, obtain the spinning dress of the non-standard steel ball of six balls
Set so that spinning effect is more preferable, also, 32 diameter of steel ball is 7.2~8.2mm, be effectively ensured low from pipe to finished product plus
Work rate.
More specifically, the outer diameter of the spinning ring 31 of spinning apparatus 3 is 35~42mm, the internal diameter of spinning ring 31 is 22~
28mm, so that spinning ring 31 is compared to existing 31 structure of spinning ring, weight is lighter, so that spinning ring 31 and steel ball 32 are in height
When rotating under the drive of speed motor, rotary inertia is smaller, so that the vibration of entire spinning apparatus 3 is smaller, spinning process
It is more stable, thus when reducing production inner screw thread copper pipe 1 due to vibration caused by the high problem of flaw detection curve, to improve low
The yield rate of the products such as the high teeth internal screwed copper tube 1 of Mick weight heavy wall, the more conducively development of industry.
The low Mick weight high teeth internal screwed copper tube of heavy wall provided in this embodiment, including be provided on copper material and inner wall several
The tubular body of the item screw thread that helix is arranged along its length, body outer diameter 7mm, and the bottom wall where the spiral shell bottom of screw thread
Thickness is 0.2~0.21mm, and a height of 0.18mm of tooth of screw thread, the high teeth inner thread of heavy wall in the case of realizing Energy Efficiency Ratio and not reducing
The production of the low Mick weight of copper pipe, more saving material, production and selling cost is lower, the more conducively development of industry, additionally, it is provided
A kind of machining tool for the above-mentioned low Mick weight high teeth internal screwed copper tube of heavy wall, will be provided with core print screw thread 21 on its outer wall
Screw thread core print 2 outer diameter be arranged between 6.8~7.5mm, effectively reduce the resistance that copper pipe is subject to during the drawing process, from
And reduce because the Mick weight of copper pipe is small and the problem of cause through normal off pipe, meanwhile, set high 211 tooth of tooth of core print screw thread 21
High 211 radius of corner is 0.03~0.045mm, and the radius of corner of bottom of the tooth 212 is 0.04~0.055mm, the fillet of bottom of the tooth 212
Radius is greater than the radius of corner of tooth high 211, so that being easier at tooth on pipe, in addition, the spinning apparatus 3 for spinning uses six
The spinning structure of the non-standard steel ball of ball is easier to meet the low Mick weight high tooth of heavy wall so that the working modulus from pipe to finished product is lower
The manufacture demand of inner screw thread copper pipe 1.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (8)
1. a kind of low Mick weight high teeth internal screwed copper tube of heavy wall characterized by comprising the main body of the copper material of tubulose, it is described
Body outer diameter is 7mm, and several screw threads along main body length direction arrangement, each spiral shell are provided on the inner wall of the main body
Line helically arrange by line, and the bottom wall thickness where the spiral shell bottom of the screw thread is 0.2~0.21mm, and the tooth of the screw thread is a height of
0.18mm, meanwhile, the addendum angle of the screw thread is 11~15 °, and the helical angle of the screw thread is 30~42 °, each main body
The rack number of the interior screw thread is 55~65.
2. a kind of machining tool, for processing the low Mick weight high teeth internal screwed copper tube of heavy wall described in claim 1, including prestretching
Stretch mould, floating core head, screw thread core print, spinning apparatus and sizing stretching die, the pre-stretching mould, the spinning apparatus and institute
It states sizing stretching die to be sequentially arranged, and pipe to be processed sequentially passes through the pre-stretching mould, the spinning apparatus and described
Sizing stretching die, an end link of the floating core head are connected with the screw thread core print, and the floating core head and the screw thread
Core print is all set in the pipe, and the floating core head is located in the range of the pre-stretch film, screw thread core print position
In the range of the spinning apparatus, which is characterized in that the outer diameter of the screw thread core print is 6.8~7.5mm, the screw thread core print
Outer wall on be provided with several core print screw threads arranged along its length, and each core print screw thread helically line cloth
Set, and the tooth height of the core print screw thread and the rounded setting of bottom of the tooth, and the high radius of corner of the tooth be 0.03~
0.045mm, the radius of corner of the bottom of the tooth are 0.04~0.055mm, and the radius of corner of the bottom of the tooth is greater than the high circle of the tooth
Angular radius, also, the spinning apparatus is the spinning structure of the non-standard steel ball of six balls.
3. machining tool according to claim 2, which is characterized in that it is high that the radius of corner of the bottom of the tooth is greater than the tooth
0.01~0.03mm of radius of corner.
4. machining tool according to claim 2, which is characterized in that the spinning apparatus includes spinning ring and steel ball, institute
Stating spinning ring is that two symmetrically arranged spinning divide ring to form, and the spinning divides ring to be arranged in a ring, and the spinning divides the inner wall of ring
It is upper and divide the side of ring to offer slot rolling respectively close to another spinning, and after two spinning divide ring to be oppositely arranged, institute
It states steel ball and is located at two spinning and divide in the slot rolling of ring.
5. machining tool according to claim 4, which is characterized in that be provided with 4~8 steel balls in the spinning ring.
6. machining tool according to claim 4, which is characterized in that the steel ball size is 7.2~8.2mm.
7. machining tool according to claim 4, which is characterized in that the outer diameter of the spinning ring is 35~42mm.
8. machining tool according to claim 4, which is characterized in that the internal diameter of the spinning ring is 22~28mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244693.1A CN109967585B (en) | 2019-03-28 | 2019-03-28 | Low-meter-gram-weight thick-wall high-tooth internal thread copper pipe and machining tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244693.1A CN109967585B (en) | 2019-03-28 | 2019-03-28 | Low-meter-gram-weight thick-wall high-tooth internal thread copper pipe and machining tool thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109967585A true CN109967585A (en) | 2019-07-05 |
| CN109967585B CN109967585B (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910244693.1A Active CN109967585B (en) | 2019-03-28 | 2019-03-28 | Low-meter-gram-weight thick-wall high-tooth internal thread copper pipe and machining tool thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892468U (en) * | 2010-12-03 | 2011-07-06 | 宁波金田铜管有限公司 | Internal thread copper pipe |
| CN202734642U (en) * | 2012-08-09 | 2013-02-13 | 宁波金田铜管有限公司 | Light-weight dense-tooth inner thread copper tube |
| CN204018617U (en) * | 2014-07-09 | 2014-12-17 | 宁波金田铜管有限公司 | Core head for large helix angle forming of internal thread copper pipes |
| CN205156709U (en) * | 2015-10-27 | 2016-04-13 | 山东中佳新材料有限公司 | King bolt angle internal thread copper pipe |
| CN108284145A (en) * | 2018-04-11 | 2018-07-17 | 宁波金田铜管有限公司 | A kind of molding machine and its application method of outsole wall thickness inner screw thread copper pipe |
| CN207797862U (en) * | 2017-12-26 | 2018-08-31 | 金龙精密铜管集团股份有限公司 | Efficient inner screw thread copper pipe |
-
2019
- 2019-03-28 CN CN201910244693.1A patent/CN109967585B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892468U (en) * | 2010-12-03 | 2011-07-06 | 宁波金田铜管有限公司 | Internal thread copper pipe |
| CN202734642U (en) * | 2012-08-09 | 2013-02-13 | 宁波金田铜管有限公司 | Light-weight dense-tooth inner thread copper tube |
| CN204018617U (en) * | 2014-07-09 | 2014-12-17 | 宁波金田铜管有限公司 | Core head for large helix angle forming of internal thread copper pipes |
| CN205156709U (en) * | 2015-10-27 | 2016-04-13 | 山东中佳新材料有限公司 | King bolt angle internal thread copper pipe |
| CN207797862U (en) * | 2017-12-26 | 2018-08-31 | 金龙精密铜管集团股份有限公司 | Efficient inner screw thread copper pipe |
| CN108284145A (en) * | 2018-04-11 | 2018-07-17 | 宁波金田铜管有限公司 | A kind of molding machine and its application method of outsole wall thickness inner screw thread copper pipe |
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| CN109967585B (en) | 2021-03-09 |
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