CN113600638A - Processing technology of reducing pipe fitting - Google Patents
Processing technology of reducing pipe fitting Download PDFInfo
- Publication number
- CN113600638A CN113600638A CN202110860138.9A CN202110860138A CN113600638A CN 113600638 A CN113600638 A CN 113600638A CN 202110860138 A CN202110860138 A CN 202110860138A CN 113600638 A CN113600638 A CN 113600638A
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- Prior art keywords
- pipe fitting
- clamping space
- reducing
- head
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
Abstract
The invention discloses a processing technology of a reducing pipe fitting, which is used for a mould, wherein a first clamping space is arranged in the mould; the processing technology comprises the following steps: step A1: processing a pipe with the same diameter into a pipe with a different diameter, clamping a reducing end of the pipe with the different diameter in the first clamping space of the die, and penetrating one end of a core drawing head through the reducing end of the pipe with the different diameter and the first clamping space of the die; step A2: and drawing the core drawing head, wherein the core drawing head and the inner wall of the first clamping space of the die extrude the pipe wall of the reducing end of the reducing pipe fitting, and the wall thickness of the reducing end of the reducing pipe fitting is controlled. The wall thickness of the reducing end of the reducing pipe fitting is controlled through the drawing process, the processing process is simple and ingenious, the wall thickness of the reducing end of the reducing pipe fitting is further controlled while the reducing pipe fitting is processed through the drawing process, the production efficiency is high, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of reducing pipe fitting machining, in particular to a reducing pipe fitting machining process.
Background
At present, the direct production of the reducing pipe fittings in the industry has the processes of necking by a punch press, spinning and necking and the like, wherein the process of necking by the punch press can lead the wall thickness of the reducing end of a product to be thickened more, the weight of the product is larger, the cost control is not facilitated, the process of spinning and necking can control the wall thickness of the reducing end of the product, but the whole production efficiency is low, the efficiency of batch production is reduced, and the cost is higher.
Aiming at the problem of thickening of the wall thickness of the necking end of the product in the prior art, a cutting process is added in the industry, the wall thickness of the necking end of the product is reduced, the production cost is reduced, the weight of the product is lightened, and the overall production efficiency is reduced after the process is added.
I choose to adopt the technology of push-reducing, realize reducing the direct throat, reach the throat end wall thickness controllable, efficient advantage.
Disclosure of Invention
Aiming at the problems of the existing processing technology of the reducing pipe fitting, the processing technology of the reducing pipe fitting is provided, the wall thickness of the reducing end of the reducing pipe fitting is controlled through a drawing technology, the processing technology is simple and ingenious, the production efficiency is high, the production cost is reduced, and the wall thickness of the reducing end of the reducing pipe fitting is further controlled when the reducing pipe fitting is processed through a pushing technology, so that the production efficiency is further improved, and the production cost is reduced.
The specific technical scheme is as follows:
a processing technology of a reducing pipe fitting is used for a die, and a first clamping space is formed in the die;
the processing technology comprises the following steps:
step A1: processing a pipe with the same diameter into a pipe with a different diameter, clamping a reducing end of the pipe with the different diameter in the first clamping space of the die, and penetrating one end of a core drawing head through the reducing end of the pipe with the different diameter and the first clamping space of the die;
step A2: and drawing the core drawing head, wherein the core drawing head and the inner wall of the first clamping space of the die extrude the pipe wall of the reducing end of the reducing pipe fitting, and the wall thickness of the reducing end of the reducing pipe fitting is controlled.
In the processing technology of the reducing pipe fitting, the first clamping space, the transition space and the second clamping space which are sequentially communicated are arranged in the die, and the inner diameter of the second clamping space is larger than that of the first clamping space;
the step A1 includes:
step A1.1: clamping the pipe fitting with the same diameter in the second clamping space;
step A1.2: the reducing head is pushed to push the pipe fitting with the same diameter towards the direction of the first clamping space, one end of the pipe fitting with the same diameter is reduced, the pipe fitting with the same diameter is machined into the pipe fitting with the different diameter, and one end of the core drawing head penetrates through the reduced end of the pipe fitting with the different diameter.
In the above processing technology for reducing pipes, in step a1.2, the core-pulling head is kept still, and one end of the core-pulling head is located in the transition space or the second clamping space.
In the processing technology of the reducing pipe fitting, the outer wall of one end of the core pulling head is arranged in an arc shape.
In the processing technology of the reducing pipe fitting, a protruding portion is arranged at one end of the core pulling head, and the outer wall of the protruding portion is arranged in an arc shape along the axial direction of the core pulling head.
In the above processing technology of the reducing pipe fitting, the minimum distance between the outer wall of one end of the core pulling head and the inner wall of the first clamping space is equal to the wall thickness of the reducing end of the reducing pipe fitting, and the wall thickness of the reducing end of the reducing pipe fitting is equal to the wall thickness of the pipe fitting with the same diameter.
In the above processing technology for reducing pipes, the first clamping space and the second clamping space are both cylindrical, and the inner diameter of the first clamping space is larger than that of the second clamping space;
the transition space is in a round table shape.
In the above processing technology for the reducing pipe fitting, an annular step is arranged on the periphery of one end of the push-and-shrink head, and the other end of the reducing pipe fitting is limited in the annular step and the second clamping space.
In the above processing technology for the reducing pipe fitting, the central axis of the core-pulling head coincides with the central axis of the first clamping space, and the core-pulling head moves along the central axis of the first clamping space.
In the reducing pipe fitting machining process, the central axis of the pushing and shrinking head coincides with the central axis of the second clamping space, and the pushing and shrinking head moves along the direction of the central axis of the second clamping space.
Compared with the prior art, the technical scheme has the positive effects that:
the wall thickness of the reducing end of the reducing pipe fitting is controlled through the drawing process, the processing process is simple and ingenious, the production efficiency is high, the production cost is reduced, and the wall thickness of the reducing end of the reducing pipe fitting is further controlled while the reducing pipe fitting is processed through the pushing process, so that the production efficiency is further improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a die for a reducing pipe fitting processing technology of the present invention;
FIG. 2 is a schematic structural view of a pipe fitting with the same diameter arranged in a die of the reducing pipe fitting machining process of the invention;
FIG. 3 is a schematic view of the overall structure of a process for manufacturing a reducing pipe fitting according to the present invention;
FIG. 4 is a schematic structural diagram of a reducing pipe fitting of the processing technique of the reducing pipe fitting of the present invention;
FIG. 5 is a schematic structural view of a push-and-pull head of the reducing pipe processing technique of the present invention;
in the drawings: 1. a mold; 2. a first clamping space; 3. a transition space; 4. a second clamping space; 5. a pipe fitting with the same diameter; 6. reducing pipe fittings; 7. a necking end; 8. core pulling head; 9. pushing and shrinking the head; 10. a boss portion; 11. an annular step.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Fig. 1 is a schematic structural view of a die for a reducing pipe processing process of the present invention, fig. 2 is a schematic structural view of a same-diameter pipe disposed in the die for the reducing pipe processing process of the present invention, fig. 3 is a schematic structural view of an overall reducing pipe processing process of the present invention, fig. 4 is a schematic structural view of a reducing pipe for the reducing pipe processing process of the present invention, fig. 5 is a schematic structural view of a push-and-pull head for the reducing pipe processing process of the present invention, and fig. 1 to 5 show a reducing pipe processing process of a preferred embodiment, which is used in a die 1, and the die 1 has a first clamping space 2 therein.
Preferably, the mold 1 may be an upper mold and a lower mold which are fitted to each other.
Further, as a preferred embodiment, the processing technology comprises:
step A1: processing a pipe fitting 5 with the same diameter into a pipe fitting 6 with a different diameter, clamping a reducing end 7 of the pipe fitting 6 with the different diameter in a first clamping space 2 of a mold 1, penetrating one end of a core pulling head 8 through the reducing end of the pipe fitting 6 with the different diameter, and penetrating one end of the core pulling head 8 through the first clamping space 2 of the mold 1;
step A2: and pulling the core pulling head 8, wherein the core pulling head 8 and the inner wall of the first clamping space 2 of the die 1 extrude the pipe wall of the reducing end 7 of the reducing pipe fitting 6, and the wall thickness of the reducing end 7 of the reducing pipe fitting 6 is controlled.
The invention realizes the control of the wall thickness of the necking end 7 of the reducing pipe fitting 6 only by a drawing process, and has higher production efficiency.
Preferably, the pipe fitting 5 is a metal pipe fitting or a plastic pipe fitting, and preferably, the pipe fitting 5 is a copper pipe fitting.
The length of the reduced end 7 of the reduced-diameter pipe 6 after the drawing process can be determined by a cutting process.
Further, as a preferred embodiment, the mold 1 has a first clamping space 2, a transition space 3 and a second clamping space 4 which are sequentially communicated, and the inner diameter of the second clamping space 4 is larger than that of the first clamping space 2.
Preferably, the second clamping space 4 encloses a pipe 5 of the same diameter.
Further, as a preferred embodiment, step a1 includes:
step A1.1: clamping the same-diameter pipe fitting 5 in the second clamping space 4;
step A1.2: the reducing head 9 pushes the same-diameter pipe 5 towards the first clamping space 2, and one end of the same-diameter pipe 5 is reduced, so that the same-diameter pipe 5 is processed into the different-diameter pipe 6, and one end of the core drawing head 8 penetrates through the reduced end 7 of the different-diameter pipe 6.
Preferably, the transition space 3 is used for guiding or guiding the pipe 5 to be necked down during pushing of the pipe 5 by the pushing head 9.
The invention realizes that the pipe fittings 5 with the same diameter are directly converted into the pipe fittings 6 with different diameters by a push-and-shrink process, and the production efficiency is extremely high by matching with a drawing process for controlling the wall thickness and a processing process matched with each other.
Further, as a preferred embodiment, in step a1.2, the core back head 8 is kept stationary and one end of the core back head 8 is located in the transition space 3 or the second clamping space 4. Preferably, during the push-and-retract process, one end of the core back head 8 automatically enters the transition space 3.
Further, as a preferred embodiment, the outer wall of one end of the core-pulling head 8 is arranged in an arc shape.
Further, as a preferred embodiment, one end of the core pulling head 8 is provided with a protruding portion 10, and the outer wall of the protruding portion 10 is arranged in an arc shape along the axial direction of the core pulling head 8. Preferably, the projection 10 is capable of drawing a thickened portion of the reduced end 7 of the reducing pipe member 6 towards the outer end.
Preferably, one end of the core-pulling head 8 is arranged in a sphere shape.
Preferably, one end of the core print 8 increases product flow.
Preferably, one end of the core-pulling head 8 is plated to improve the wear resistance and hardness.
The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The present invention also has the following embodiments in addition to the above:
in a further embodiment of the present invention, please refer to fig. 1 to 5, the minimum distance between the outer wall of one end of the core-pulling head 8 and the inner wall of the first clamping space 2 is equal to the wall thickness of the reduced end 7 of the reducing pipe 6, and the wall thickness of the reduced end 7 of the reducing pipe 6 is equal to the wall thickness of the same-diameter pipe 5.
In a further embodiment of the invention, the first clamping space 2 and the second clamping space 4 are both cylindrical, and the inner diameter of the first clamping space 2 is larger than the inner diameter of the second clamping space 4.
In a further embodiment of the invention, the transition space 3 is truncated cone-shaped.
Preferably, the first clamping space 2 communicates with the end of the transition space 3 having a smaller inner diameter, and the second clamping space 4 communicates with the end of the transition space 3 having a larger inner diameter.
Preferably, the first clamping space 2 and the transition space 3 and the second clamping space 4 and the transition space 3 are transited through arc surfaces.
In a further embodiment of the present invention, the outer circumference of one end of the push head 9 has an annular step 11, and the other end of the pipe 5 with the same diameter is limited in the annular step 11 and the second clamping space 4. Preferably, the annular step 11 is arranged, so that the pushing and shrinking head 9 can push the pipe fitting 5 with the same diameter more stably, and the annular step 11 also has a guiding function.
In a further embodiment of the invention, the central axis of the core back head 8 coincides with the central axis of the first clamping space 2, and the core back head 8 is movable in the direction of the central axis of the first clamping space 2.
In a further embodiment of the invention, the central axis of the pushing head 9 coincides with the central axis of the second clamping space 4, and the pushing head 9 is movable in the direction of the central axis of the second clamping space 4.
The wall thickness of the reducing end 7 of the reducing pipe fitting 6 is controlled through the drawing process, the processing process is simple and ingenious, the production efficiency is high, the production cost is reduced, and the wall thickness of the reducing end 7 of the reducing pipe fitting 6 is further controlled while the reducing pipe fitting 6 is processed through the pushing and shrinking process, so that the production efficiency is further improved, and the production cost is reduced.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The processing technology of the reducing pipe fitting is characterized by being used for a die, wherein a first clamping space is formed in the die;
the processing technology comprises the following steps:
step A1: processing a pipe with the same diameter into a pipe with a different diameter, clamping a reducing end of the pipe with the different diameter in the first clamping space of the die, and penetrating one end of a core drawing head through the reducing end of the pipe with the different diameter and the first clamping space of the die;
step A2: and drawing the core drawing head, wherein the core drawing head and the inner wall of the first clamping space of the die extrude the pipe wall of the reducing end of the reducing pipe fitting, and the wall thickness of the reducing end of the reducing pipe fitting is controlled.
2. The reducing pipe machining process according to claim 1, wherein the die is internally provided with a first clamping space, a transition space and a second clamping space which are communicated in sequence, and the inner diameter of the second clamping space is larger than that of the first clamping space;
the step A1 includes:
step A1.1: clamping the pipe fitting with the same diameter in the second clamping space;
step A1.2: the reducing head is pushed to push the pipe fitting with the same diameter towards the direction of the first clamping space, one end of the pipe fitting with the same diameter is reduced, the pipe fitting with the same diameter is machined into the pipe fitting with the different diameter, and one end of the core drawing head penetrates through the reduced end of the pipe fitting with the different diameter.
3. The process for machining a reduced diameter pipe fitting according to claim 2, wherein in the step a1.2, the core-pulling head is kept still, and one end of the core-pulling head is located in the transition space or the second clamping space.
4. The reducing pipe processing technology according to claim 1 or 2, wherein the outer wall of one end of the core drawing head is arranged in an arc shape.
5. The reducing pipe fitting machining process according to claim 1 or 2, wherein a protruding portion is arranged at one end of the core drawing head, and the outer wall of the protruding portion is arranged in an arc shape along the axial direction of the core drawing head.
6. The reducing pipe fitting processing technology according to claim 2, wherein the minimum distance between the outer wall of one end of the core pulling head and the inner wall of the first clamping space is equal to the wall thickness of the reduced end of the reducing pipe fitting, and the wall thickness of the reduced end of the reducing pipe fitting is equal to the wall thickness of the same-diameter pipe fitting.
7. The reducing pipe machining process according to claim 2, wherein the first clamping space and the second clamping space are both cylindrical, and the inner diameter of the first clamping space is larger than that of the second clamping space;
the transition space is in a round table shape.
8. The reducing pipe fitting machining process according to claim 2, wherein an annular step is formed in the periphery of one end of the push-and-pull head, and the other end of the reducing pipe fitting is limited in the annular step and the second clamping space.
9. The reducing pipe machining process according to claim 1 or 2, wherein a central axis of the core drawing head coincides with a central axis of the first clamping space, and the core drawing head moves in a direction of the central axis of the first clamping space.
10. The reducing pipe machining process according to claim 2, wherein a central axis of the push-and-pull head coincides with a central axis of the second clamping space, and the push-and-pull head moves in a direction of the central axis of the second clamping space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860138.9A CN113600638A (en) | 2021-07-28 | 2021-07-28 | Processing technology of reducing pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860138.9A CN113600638A (en) | 2021-07-28 | 2021-07-28 | Processing technology of reducing pipe fitting |
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| Publication Number | Publication Date |
|---|---|
| CN113600638A true CN113600638A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110860138.9A Pending CN113600638A (en) | 2021-07-28 | 2021-07-28 | Processing technology of reducing pipe fitting |
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| CN (1) | CN113600638A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279706A (en) * | 2004-03-29 | 2005-10-13 | Calsonic Kansei Corp | Metal tube end diameter-reducing method and device therefor |
| CN1781621A (en) * | 2004-11-29 | 2006-06-07 | 李嘉豪 | Method and its device for forming heat pipe shrinking pipe |
| JP2006159224A (en) * | 2004-12-03 | 2006-06-22 | Univ Of Electro-Communications | Necking method of round metallic tube |
| CN102186609A (en) * | 2008-08-21 | 2011-09-14 | 昭和电工株式会社 | Device for drawing tubular workpiece |
| CN108655284A (en) * | 2018-05-04 | 2018-10-16 | 深圳市星源材质科技股份有限公司 | A kind of preparation method of tube core processing unit (plant) and tube core |
| CN209520257U (en) * | 2018-11-23 | 2019-10-22 | 青岛海尔空调电子有限公司 | Necking die |
| CN211360374U (en) * | 2019-11-11 | 2020-08-28 | 安特金属成形（上海）有限公司 | Automobile pipe fitting necking forming die |
| JP2020151755A (en) * | 2019-03-20 | 2020-09-24 | 武蔵精密工業株式会社 | Hollow shaft |
-
2021
- 2021-07-28 CN CN202110860138.9A patent/CN113600638A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279706A (en) * | 2004-03-29 | 2005-10-13 | Calsonic Kansei Corp | Metal tube end diameter-reducing method and device therefor |
| CN1781621A (en) * | 2004-11-29 | 2006-06-07 | 李嘉豪 | Method and its device for forming heat pipe shrinking pipe |
| JP2006159224A (en) * | 2004-12-03 | 2006-06-22 | Univ Of Electro-Communications | Necking method of round metallic tube |
| CN102186609A (en) * | 2008-08-21 | 2011-09-14 | 昭和电工株式会社 | Device for drawing tubular workpiece |
| CN108655284A (en) * | 2018-05-04 | 2018-10-16 | 深圳市星源材质科技股份有限公司 | A kind of preparation method of tube core processing unit (plant) and tube core |
| CN209520257U (en) * | 2018-11-23 | 2019-10-22 | 青岛海尔空调电子有限公司 | Necking die |
| JP2020151755A (en) * | 2019-03-20 | 2020-09-24 | 武蔵精密工業株式会社 | Hollow shaft |
| CN211360374U (en) * | 2019-11-11 | 2020-08-28 | 安特金属成形（上海）有限公司 | Automobile pipe fitting necking forming die |
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