CN109261816B - A kind of plastic joining method and device between metal pipe material and plate - Google Patents
A kind of plastic joining method and device between metal pipe material and plate Download PDFInfo
- Publication number
- CN109261816B CN109261816B CN201811124324.0A CN201811124324A CN109261816B CN 109261816 B CN109261816 B CN 109261816B CN 201811124324 A CN201811124324 A CN 201811124324A CN 109261816 B CN109261816 B CN 109261816B
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- plate
- pipe
- plastic
- male die
- hole
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses the plastic joining method and devices between a kind of metal pipe material and plate, belong to Material Joining Technology field.Device includes punch-pin, blank holder and cavity plate, after the tubing and plate that needs are connected are prefabricated, tubing is put into cavity plate, plate cavity plate and blank holder clamp, it the rotation of punch-pin high speed and is rotated at a slow speed along tubing axis, tubing plasticity is promoted by friction effect, promotes the part of plate plastic deformation to flow into tube annular groove by the roll-in of punch-pin, realizes quick, efficient, the green plastic joining between tubing and plate.The device high production efficiency, it is at low cost, it is environmentally friendly, it is suitble to produce in enormous quantities.It using the method that the device is attached using by the way of Plastic Forming, is filled inside annular groove by the material of plate, joint quality is good, can bear biggish tensile stress, solves the difficult connection problem welded between heterogeneous tubing and sheet metal.
Description
Technical Field
The invention belongs to the technical field of material connection, and particularly relates to a plastic connection method and device between a metal pipe and a plate.
Background
In modern industry, parts of the pipe type and parts of the plate type are widely used in the manufacturing industry. The traditional connection between the plate and the pipe mainly adopts a welding process, but has the defects of low production efficiency, poor repeatability, environmental pollution and the like. In addition, for materials with poor weldability, the connection between the pipe and the plate is difficult to achieve by welding.
Disclosure of Invention
In order to solve the defects, the invention provides a plastic connection method and a device between a metal pipe and a plate, and the connection method has the advantages of simple operation, high reliability and strong practicability; the connecting device for realizing the connecting method has the advantages of simple structure, high compound degree, high production efficiency, low cost, environmental friendliness and suitability for mass production.
The invention is realized by the following technical scheme:
the invention discloses a plastic connection method between a metal pipe and a plate, which comprises the following steps:
1) at a wall thickness of t2The inner wall of the pipe is processed with a plurality of rings of annular grooves with the depth of H and the width of L, and the radius of the inner fillet of the annular groove is R1The radius of the external fillet is R2(ii) a At a thickness of t1Processing round holes on the plate;
2) fixing the female die, fixedly placing the pipe in the hole, fixedly placing the plate between the upper plane of the female die and the lower plane of the blank holder, and enabling the axes of the round hole and the hole on the plate to coincide; application of force F1Pressing the plate tightly;
3) enabling the male die to move towards the hole at a speed V, flanging the plate, and continuously controlling the male die to move until the flanging of the plate is in close contact with the inner wall of the pipe;
4) the male die is made to rotate at an angular velocity omega1Rotation while an angular velocity ω is measured with the axis of the hole as the center line and Δ L as the radius2Circular motion is carried out, and the flanging of the plate is extruded into the annular groove of the pipe under the acting force of the male die;
5) repeating the operation of the step 4) until the plate and the pipe are completely combined; and operating the male die to keep away from the female die, removing the blank holder, and taking out the connecting piece of the plate and the pipe to complete the plastic connection between the metal pipe and the plate.
Preferably, the plate is made of copper alloy, magnesium alloy or aluminum alloy; the pipe is made of titanium alloy, stainless steel, magnesium alloy or aluminum alloy.
Preferably, 1.0mm ≦ t1≤3.0mm，1.0mm≤t2Not more than 4.0mm, and
preferably, the specification of the annular groove is as follows:
preferably, ω is1＝30～50rad/s，ω2＝0.05～0.1rad/s，ΔL＝H。
The invention also discloses a device for realizing the plastic connection method between the metal pipe and the plate, which comprises a male die, a blank holder and a female die; a hole is formed in the female die; a circular hole is formed on the blank holder; when in use, the pipe with a plurality of grooves on the inner wall is placed and fixed in the hole, and the plate with the hole is fixedly placed between the upper plane of the female die and the lower plane of the blank holder; the male die is a cylinder and can be connected with an external power source and perform linear motion, rotation and circular motion by taking the axis of the hole as a central line towards the female die under the driving of the external power source.
Preferably, the female die is in a chuck or tube clamp structure.
Preferably, the blank holder and the female die fix the plate through a clamp or a jacking device.
Preferably, the external power source is a numerical control incremental forming machine, a boring machine, a milling machine or a machining center.
Preferably, the front end of the male die is a cone or a sphere.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a plastic connection method between a metal pipe and a plate, which adopts a method of prefabricating an annular groove at the end part of the pipe, combining high-speed autorotation of a male die and slow rotation along the axis of the pipe, improving the plasticity of the pipe by virtue of a friction effect, and promoting the part of the plate subjected to plastic deformation to flow into the annular groove of the pipe by rolling of the male die, so as to realize the quick, efficient and green plastic connection between the pipe and the plate. The method adopts a plastic forming mode, the inner part of the annular groove is filled with the material of the plate, the joint has good quality, can bear larger tensile stress, and solves the difficult problem of connection between the heterogeneous pipe and the plate metal which are difficult to weld.
Further, the plate is made of copper alloy, magnesium alloy or aluminum alloy; the pipe is made of titanium alloy, stainless steel, magnesium alloy or aluminum alloy, and by adopting the connection mode, the plate is required to have better plasticity, and the connection can be better realized by the material.
Furthermore, the value range of each parameter is based on the principle of the invention, and the result obtained by optimization is combined with the characteristics of mechanical processing and the characteristics of materials, so that the plastic connection between the plate and the pipe can be better realized.
The device for realizing the plastic connection between the metal pipe and the plate comprises a male die, a blank holder and a female die, wherein the male die is of a cylindrical structure and can be clamped on main shafts of various machine tools, the upper plane and the lower plane of the blank holder and the female die are both planes, the device is simple in structure, convenient to process, good in compatibility with conventional equipment, capable of positioning, pressing and processing the device by utilizing the existing machining equipment, and high in compounding degree. Through simple preliminary treatment, set up a plurality of recesses at the tubular product inner wall of treating the connection, set up the round hole on panel, then carry out the turn-ups back to panel through the linear motion of terrace die, the rethread friction makes panel turn-ups part produce plastic deformation, and then makes the part of panel plastic deformation flow in tubular product annular groove through the roll-in to realize being connected of panel and tubular product. The pretreatment process for the pipes and the plates to be connected is simple, the production efficiency is high, the cost is low, the complex pretreatment required in the traditional welding process and the pollution of waste materials, waste gases and light generated by welding are avoided, the method is environment-friendly, does not depend on the operation of people, is stable in connection quality and is suitable for mass production.
Furthermore, the chuck or pipe clamp structure can reliably fix the cylindrical pipe and can be adjusted within a certain diameter range.
Furthermore, the blank holder and the female die can directly utilize a clamp or a jacking device on the existing machine tool to fix the plate, no additional clamp is required to be designed, and the device is energy-saving and environment-friendly.
Furthermore, the external power source is a numerical control incremental forming machine tool, a boring machine, a milling machine or a machining center, the requirement can be met by connecting the male die with the existing equipment, and the device is efficient and environment-friendly.
Furthermore, the front end of the male die is a cone or a sphere, so that the defects of flanging such as strain, cracks, folds and the like can be reduced during flanging, and an ideal flanging and shaping effect is achieved.
Drawings
FIG. 1 is a main sectional view of the overall structure of a male die of the present invention before flanging a plate;
FIG. 2 is a main sectional view of the overall structure of the male die of the present invention when flanging a sheet material is completed;
FIG. 3 is a front cross-sectional view of the male die of the present invention rotating and pressing the flanged portion of the sheet material into the annular groove of the tubing;
FIG. 4 is a detailed view of the local dimensions of the preformed annular groove at the upper end of the pipe;
in the figure: 1 is a male die, 2 is a blank holder, 3 is a plate, 4 is a pipe, 5 is a female die, and 6 is a hole.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
As shown in figure 1, the plastic connecting device between the metal pipe and the plate comprises a male die 1, a blank holder 2 and a female die 5; the male die 1 is a cylinder, the front end of the male die can be preferably made into a cone or a sphere, the female die 5 is provided with a hole 6 for placing and fixing the pipe 4, and the pipe 4 is in interference fit with the hole 6 to achieve the effect of fixing the pipe 4; the female die 5 can also optimally adopt a chuck or a pipe clamp structure to fix the pipe 4, can fix the pipe 4 with a diameter within a certain numerical range, is convenient to assemble and disassemble, and saves the cost. The blank holder 2 is provided with a round hole, the plate 3 can be fixedly placed between the upper plane of the female die 5 and the lower plane of the blank holder 2, the female die 5 can be placed on a processing platform of a machine tool, and various clamps or jacking devices are used for applying pressure to the upper plane of the blank holder 2, so that the blank holder 2, the female die 5 and the plate 3 between the blank holder 2 and the female die 5 are clamped and fixed; the male die 1 is a cylinder, can be connected with an external power source, can rotate under the driving of the external power source and can move circularly by taking the axis of the hole 6 as a central line, the external power source is equipment such as a numerical control incremental forming machine tool, a boring machine, a milling machine, a machining center and the like, and the male die 1 can be arranged on a main shaft of the equipment, so that the actions can be easily realized.
The method for connecting the metal pipe and the plate by adopting the device comprises the following steps:
1) as shown in FIG. 4, at a wall thickness of t2(1.0mm≤t2Not more than 4.0mm) is processed into a plurality of annular grooves with the depth of H and the width of L, and the radius of the inner fillet of the annular groove is R1The radius of the external fillet is R2(ii) a At a thickness of t1(1.0mm≤t1Less than or equal to 3.0mm) is processed on the plate 3; wherein, preferably, the specification of the annular groove is as follows:
2) horizontally placing a female die 5 on a processing platform of a machine tool, fixedly placing a pipe 4 in a hole 6, fixedly placing a plate 3 between an upper plane of the female die 5 and a lower plane of a blank holder 2, and enabling the axes of a round hole in the plate 3 and the hole 6 to coincide; according to the material of the plate 3 and the pipe 4, a force F with a reasonable value is applied1Generally about 5-20 KN, pressing the plate 3 tightly;
3) as shown in fig. 2, the male die 1 moves towards the hole 6 at a speed V to turn the plate 3, and the range of V is controlled to be 0.5-1.0 mm/s in order to prevent the turning defect; the male die 1 continues to be controlled to move until the flanging of the plate 3 is in close contact with the inner wall of the pipe 4;
4) as shown in fig. 3, the punch 1 is caused to rotate at an angular velocity ω1Rotating while rotating at an angular velocity ω with the axis of the hole 6 as the center line and Δ L as the radius2Circular motion is carried out, the temperature of the plate 3 is raised and the plasticity becomes good due to the friction effect generated by the flanging of the plate 3 under the action of the rotary motion of the male die 1, and the plate is extruded into the annular groove of the pipe 4 under the action of the radial force of the male die 1; preferably, ω is1＝30～50rad/s，ω2＝0.05～0.1rad/s，ΔL＝H；
5) Repeating the operation of the step 4) until the plate 3 and the pipe 4 are completely combined; and operating the male die 1 to be far away from the female die 5, removing the blank holder 2, and taking out the connecting piece formed by connecting the plate 3 and the pipe 4 to finish the plastic connection between the metal pipe and the plate.
Claims (9)
1. A method for plastic connection between a metal pipe and a plate is characterized by comprising the following steps:
1) at the wall thickness to be connected of t2The inner wall of the pipe (4) is processed with a plurality of annular grooves with the depth of H and the width of L, and the radius of the inner fillet of the annular groove is R1The radius of the external fillet is R2(ii) a At a thickness t to be joined1Round holes are processed on the plate (3);
2) fixing a female die (5) provided with a hole (6), fixedly placing a pipe (4) in the hole (6), fixedly placing a plate (3) between the upper plane of the female die (5) and the lower plane of the blank holder (2), and enabling the axes of the round hole in the plate (3) and the hole (6) to coincide; application of force F1Pressing the plate (3);
3) enabling the male die (1) to do linear motion towards the hole (6) at a speed V, flanging the plate (3), and continuously controlling the male die (1) to move until the flanging of the plate (3) is in close contact with the inner wall of the pipe (4); the male die (1) is a cylinder and can be connected with an external power source;
4) the male die (1) is driven at an angular velocity omega1Rotating while an angular velocity omega is measured with the axis of the hole 6 as the center line and with DeltaL as the radius2Circular motion is carried out, and the flanging of the plate (3) is extruded into the annular groove of the pipe (4) under the action force of the male die (1);
5) repeating the operation of the step 4) until the plate (3) and the pipe (4) are completely combined; and (3) operating the male die (1) to be far away from the female die (5), removing the blank holder (2), and taking out the connecting piece of the plate (3) and the pipe (4) to finish the plastic connection between the metal pipe and the plate.
2. The method of plastic joining of metal tubes and plates according to claim 1, characterized in that the material of the plate (3) is copper alloy, magnesium alloy or aluminum alloy; the pipe (4) is made of titanium alloy, stainless steel, magnesium alloy or aluminum alloy.
3. The method of claim 1, wherein t is 1.0mm ≦ t1≤3.0mm，1.0mm≤t2Not more than 4.0mm, and
4. a method of plastic joining of metal tubes and sheets according to claim 1, wherein the specifications of the annular groove are as follows:
5. method of plastic joining of metal tubes and plates according to claim 1, characterized in that ω is1＝30～50rad/s，ω2＝0.05～0.1rad/s，ΔL＝H。
6. The method of plastic joining of metal tubes and plates according to claim 1, characterized in that the female die (5) is of the chuck or pipe clamp type.
7. Method for the plastic connection between a metal tube and a sheet according to claim 1, characterized in that the blankholder (2) and the matrix (5) fix the sheet (3) by means of a clamp or a jacking device.
8. The method of plastic joining of metal pipes and sheets according to claim 1 wherein the external power source is a numerically controlled incremental forming machine, a boring machine, a milling machine or a machining center.
9. The method of plastic joining of metal pipes and plates according to claim 1, characterized in that the front end of the punch (1) is a cone or a sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124324.0A CN109261816B (en) | 2018-09-26 | 2018-09-26 | A kind of plastic joining method and device between metal pipe material and plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124324.0A CN109261816B (en) | 2018-09-26 | 2018-09-26 | A kind of plastic joining method and device between metal pipe material and plate |
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| Publication Number | Publication Date |
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| CN109261816A CN109261816A (en) | 2019-01-25 |
| CN109261816B true CN109261816B (en) | 2019-11-29 |
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| CN201811124324.0A Active CN109261816B (en) | 2018-09-26 | 2018-09-26 | A kind of plastic joining method and device between metal pipe material and plate |
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Families Citing this family (2)
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| CN110640071B (en) * | 2019-09-27 | 2021-02-19 | 陕西科技大学 | Method for riveting medium-thickness metal plate without protrusions on two sides |
| CN113953386A (en) * | 2021-10-14 | 2022-01-21 | 陕西科技大学 | Method and device based on radial extrusion connection of end part of metal pipe and plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB302331A (en) * | 1927-12-15 | 1929-05-23 | National Refrigeration Corporation | |
| JPH07223030A (en) * | 1994-02-16 | 1995-08-22 | Sango Co Ltd | Joining method of pipe and plate stock |
| JP2006175455A (en) * | 2004-12-21 | 2006-07-06 | Masaki Seisakusho:Kk | Method for manufacturing discharging part of oil receiving plate and discharging pipe and grooving tool using for the same |
| CN101415505A (en) * | 2006-04-06 | 2009-04-22 | 昭和电工株式会社 | Method of joining members |
| CN107175310A (en) * | 2016-03-09 | 2017-09-19 | 形状连接技术有限公司及两合公司 | Function element is attached to the method for metal sheet parts |
-
2018
- 2018-09-26 CN CN201811124324.0A patent/CN109261816B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB302331A (en) * | 1927-12-15 | 1929-05-23 | National Refrigeration Corporation | |
| JPH07223030A (en) * | 1994-02-16 | 1995-08-22 | Sango Co Ltd | Joining method of pipe and plate stock |
| JP2006175455A (en) * | 2004-12-21 | 2006-07-06 | Masaki Seisakusho:Kk | Method for manufacturing discharging part of oil receiving plate and discharging pipe and grooving tool using for the same |
| CN101415505A (en) * | 2006-04-06 | 2009-04-22 | 昭和电工株式会社 | Method of joining members |
| CN107175310A (en) * | 2016-03-09 | 2017-09-19 | 形状连接技术有限公司及两合公司 | Function element is attached to the method for metal sheet parts |
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| Publication number | Publication date |
|---|---|
| CN109261816A (en) | 2019-01-25 |
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Effective date of registration: 20231228 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: No. 1, Weiyang District university garden, Xi'an, Shaanxi Province, Shaanxi Patentee before: SHAANXI University OF SCIENCE & TECHNOLOGY |
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