Method and apparatus for forming tubular and plate parts using soil-shaped magnetizer

Abstract

The application relates to a pipe and plate forming method using a soil-shaped magnetic concentrator, which comprises the following steps: manufacturing a circular soil-shaped magnetic concentrator with a coil cavity, placing a driving coil in the coil cavity; respectively arranging and fixing the workpieces to be formed on the upper and lower sides and the inner and outer sides of the magnetic concentrator; connecting the driving coil to a pulse power source through a discharge switch; controlling the discharge switch to supply power to the driving coil, generating induced eddy current in the pipe and plate workpieces to be formed, and deforming the pipe and plate workpieces to reach the forming specification. The application also discloses a device for simultaneously forming multiple pipes and plates. The application realizes the simultaneous forming of pipe expansion, pipe compression and plate expansion, doubles the workpiece forming efficiency, reduces the electromagnetic radiation to the environment in the electromagnetic forming process of the workpieces, and is more energy-saving and environment-friendly.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic forming of metal workpieces, and specifically relates to a method and apparatus for forming tubes and plates using a T-shaped magnet collector. Background Technology

[0002] Lightweighting is an important technological means to achieve energy conservation and emission reduction in fields such as aerospace and automotive. Electromagnetic forming is a high-speed pulse forming technology that can significantly improve the forming performance of metallic materials and is an effective means to solve the forming difficulties of lightweight alloys.

[0003] In electromagnetic forming, the initial energy input from the power source changes, and this energy acts on the workpiece, causing it to deform; that is, electrical energy is converted into shaping energy. The main energy loss in electromagnetic forming is Joule heating generated by the coil. Studies have found that only a portion of the electrical energy stored in the charging capacitor, which serves as the pulse power source, is converted into the workpiece's forming energy. The ratio of the workpiece's shaping energy to the electrical energy in the charging capacitor is less than 20%. Current research focuses very little on the energy involved in electromagnetic forming.

[0004] The paper "Study on the efficiency of Simultaneous Tube Compression and Expansion Electromagnetic Forming" published in the journal *IEEE ACCESS* discloses a dual-tube electromagnetic forming method that can simultaneously provide electromagnetic force to two tubes, resulting in compression and expansion forming effects respectively, with a significant improvement in forming efficiency compared to traditional expansion forming. However, this method cannot achieve simultaneous forming of tubes and plates. Chinese patent CN105880348B, "A High-Efficiency Electromagnetic Forming Method and Apparatus for Plates," provides a high-efficiency electromagnetic forming method for plates by connecting the metal plates to be processed end-to-end to form a polygonal electrical conduction loop, enabling the simultaneous processing of multiple metal plates and improving electromagnetic forming efficiency. However, this method can only achieve simultaneous forming of multiple plates, not simultaneous forming of tubes and plates.

[0005] In summary, the existing technology lacks electromagnetic forming methods and devices for simultaneously forming pipes and plates. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems by providing a method and apparatus for forming pipes and plates using a T-shaped magnetic collector. The T-shaped magnetic collector has three types of protrusions: an outer protrusion, an inner protrusion, an upper protrusion, and a lower protrusion. The outer protrusion increases the radial electromagnetic force of the outer pipe of the T-shaped magnetic collector; the inner protrusion increases the radial electromagnetic force of the inner pipe of the T-shaped magnetic collector; the upper protrusion increases the axial electromagnetic force of the upper plate of the T-shaped magnetic collector; and the lower protrusion increases the axial electromagnetic force of the lower plate of the T-shaped magnetic collector. This allows for the simultaneous processing and forming of two pipes and plates, or two plates and pipes, thereby improving workpiece forming efficiency and energy utilization.

[0007] The technical solution of this invention is a method for forming tubes and plates using a T-shaped magnet collector, comprising the following steps: Step 1: Make a ring-shaped magnet collector with a coil cavity, and place the driving coil in the coil cavity; Step 2: Set and fix the tube and plate to be formed on the upper, lower, inner and outer sides of the T-shaped magnet collector; Step 2.1: Place the tube to be formed inside and outside the T-shaped magnet collector and fix it in place; Step 2.2: Place the plate to be formed on the upper and lower sides of the T-shaped magnet collector and fix it in place; Step 3: Connect the drive coil to the pulse power supply via a discharge switch; Step 4: Control the discharge switch to supply power to the drive coil, which will generate eddy currents in the tube or plate to be formed, causing the tube or plate to deform and achieve the forming specifications. Step 5: Determine whether the pipe or plate to be formed has reached the forming specifications. If there are pipes or plates that have not reached the forming specifications, remove the pipes or plates that have reached the forming specifications. Repeat steps 3 and 4 for the pipes or plates that have not reached the forming specifications until they reach the forming specifications.

[0008] Preferably, the T-shaped magnet collector is divided into upper and lower parts to facilitate the placement or removal of the drive coil. Preferably, the apparatus for forming pipes and plates using a T-shaped magnet collector includes a T-shaped magnet collector, a drive coil, and a pulse power supply. The T-shaped magnet collector includes an outer convex ring, an inner convex ring, and an upper convex ring. The T-shaped magnet collector has a coil cavity and a through hole for placing the pipe to be formed. The side wall of the T-shaped magnet collector has a slit. The cross-section of the T-shaped magnet collector is T-shaped. The drive coil is placed in the coil cavity and is connected to the pulse power supply via a discharge switch. The apparatus enables the simultaneous processing and forming of two pipes and plates.

[0009] Preferably, the apparatus for forming pipes and plates using a T-shaped magnet collector includes a T-shaped magnet collector, a drive coil, and a pulse power supply. The T-shaped magnet collector includes an outer convex ring, an inner convex ring, and a lower convex ring. The T-shaped magnet collector has a coil cavity and a through hole for placing the pipe to be formed. The side wall of the T-shaped magnet collector has a slit. The cross-section of the T-shaped magnet collector is T-shaped. The drive coil is placed in the coil cavity and is connected to the pulse power supply via a discharge switch. The apparatus enables the simultaneous processing and forming of two pipes and plates.

[0010] Preferably, the apparatus for forming tubes and plates using a T-shaped magnet collector includes a T-shaped magnet collector, a drive coil, and a pulse power supply. The T-shaped magnet collector includes an inner convex ring, an upper convex ring, and a lower convex ring. The T-shaped magnet collector has a coil cavity and a through hole for placing the tube to be formed. The side wall of the T-shaped magnet collector has a slit. The cross-section of the T-shaped magnet collector is T-shaped. The drive coil is placed in the coil cavity and is connected to the pulse power supply via a discharge switch. The apparatus enables the simultaneous processing and forming of two plates and tubes.

[0011] Preferably, the apparatus for forming tubes and plates using a T-shaped magnet collector includes a T-shaped magnet collector, a drive coil, and a pulse power supply. The T-shaped magnet collector includes an inner convex ring, an upper convex ring, and a lower convex ring. The T-shaped magnet collector has a coil cavity and a through hole for placing the tube to be formed. The side wall of the T-shaped magnet collector has a slit. The cross-section of the T-shaped magnet collector is T-shaped. The drive coil is placed in the coil cavity and is connected to the pulse power supply via a discharge switch. The apparatus enables the simultaneous processing and forming of two plates and tubes.

[0012] Compared with the prior art, the beneficial effects of the present invention include: 1) By using a T-shaped magnet collector, this invention achieves simultaneous forming of pipe expansion, pipe compression and plate expansion, which greatly improves the forming efficiency of the workpiece and reduces the electromagnetic radiation to the environment during the electromagnetic forming process, making it more energy-efficient and environmentally friendly.

[0013] 2) This invention achieves simultaneous forming control of double-plate parts and tube parts, and enables the two formed plates to achieve different forming specifications, which can meet diverse plate forming requirements.

[0014] 3) The simultaneous forming device for plates and double tubes of the present invention realizes simultaneous forming control of single plates and double tubes.

[0015] 4) The magnet collector of the present invention is easy to manufacture, has low cost, and is conducive to widespread use. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a cross-sectional schematic diagram of a magnet collector with multiple protrusions.

[0018] Figure 2 This is a circuit connection diagram of the forming apparatus according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the device for simultaneously forming pipes and plates according to Embodiment 1.

[0020] Figure 4 This is a schematic diagram of the device for simultaneously forming pipes and plates in Embodiment 2.

[0021] Figure 5 This is a schematic diagram of the device for simultaneously forming pipes and plates in Embodiment 3.

[0022] Figure 6 This is a schematic diagram of the device for simultaneously forming pipes and plates in Embodiment 4. Detailed Implementation

[0023] Magnet collectors with multiple protrusions, such as Figure 1 As shown, the device includes two or more of the following: an outer convex ring 2.1, an inner convex ring 2.2, an upper convex ring 2.3, and a lower convex ring 2.4. The magnet collector has a coil cavity 2.5 and a through hole 2.6 for placing the tube to be formed. The side wall of the magnet collector has a slit 2.7. The upper convex ring 2.3 is used to increase the axial electromagnetic force of the upper plate, the lower convex ring 2.4 is used to increase the axial electromagnetic force of the lower plate, the outer convex ring 2.1 is used to increase the radial electromagnetic force of the outer tube, and the inner convex ring 2.2 is used to increase the radial electromagnetic force of the inner tube.

[0024] Example 1 The method for forming pipes and plates using a T-shaped magnet collector includes the following steps: Step 1: Make a ring-shaped magnet collector with a coil cavity, and place the driving coil in the coil cavity; Step 2: Set and fix the tube and plate to be formed on the upper side, inner and outer sides of the T-shaped magnet collector; Step 2.1: Place the tube to be formed inside and outside the T-shaped magnet collector and fix it in place; Step 2.2: Place the plate to be formed on the upper side of the T-shaped magnet collector and fix it in place; Step 3: Connect the drive coil to the pulse power supply via a discharge switch; Step 4: Control the discharge switch to supply power to the drive coil, which will generate eddy currents in the tube or plate to be formed, causing the tube or plate to deform and achieve the forming specifications. Step 5: Determine whether the pipe or plate to be formed has reached the forming specifications. If there are pipes or plates that have not reached the forming specifications, remove the pipes or plates that have reached the forming specifications. Repeat steps 3 and 4 for the pipes or plates that have not reached the forming specifications until they reach the forming specifications.

[0025] like Figure 3 As shown, the device for simultaneously forming dual tubes and plates includes a T-shaped magnet collector 2, a drive coil 1, and a pulse power supply. The T-shaped magnet collector includes an outer convex ring 2.1, an inner convex ring 2.2, and an upper convex ring 2.3. The magnet collector has a coil cavity 2.5 and a through hole 2.6 for placing the tube to be formed. The side wall of the magnet collector has a slit 2.7. The cross-section of the magnet collector is T-shaped. The drive coil 1 is placed in the coil cavity 2.5 and is connected to the pulse power supply via a discharge switch. Figure 2 As shown.

[0026] In this embodiment, two pipe fittings and one plate fitting are processed and formed simultaneously, with the plate fitting being bulged into a basin shape.

[0027] Example 2 The method for forming pipes and plates using a T-shaped magnet collector includes the following steps: Step 1: Make a ring-shaped magnet collector with a coil cavity, and place the driving coil in the coil cavity; Step 2: Set and fix the tube and plate to be formed on the lower side, inner and outer sides of the T-shaped magnet collector; Step 2.1: Place the tube to be formed inside and outside the T-shaped magnet collector and fix it in place; Step 2.2: Place the plate to be formed on the underside of the T-shaped magnet collector and fix it in place; Step 3: Connect the drive coil to the pulse power supply via a discharge switch; Step 4: Control the discharge switch to supply power to the drive coil, which will generate eddy currents in the tube or plate to be formed, causing the tube or plate to deform and achieve the forming specifications. Step 5: Determine whether the pipe or plate to be formed has reached the forming specifications. If there are pipes or plates that have not reached the forming specifications, remove the pipes or plates that have reached the forming specifications. Repeat steps 3 and 4 for the pipes or plates that have not reached the forming specifications until they reach the forming specifications.

[0028] like Figure 4As shown, the device for simultaneously forming dual tubes and plates includes a T-shaped magnet collector 2, a drive coil 1, and a pulse power supply. The multi-protruding annular magnet collector includes an outer protruding ring 2.1, an inner protruding ring 2.2, and a lower protruding ring 2.4. The magnet collector has a coil cavity 2.5 and a through hole 2.6 for placing the tube to be formed. The side wall of the magnet collector has a slit 2.7. The cross-section of the magnet collector is T-shaped. The drive coil 1 is placed in the coil cavity 2.5 and is connected to the pulse power supply via a discharge switch.

[0029] In this embodiment, two pipe fittings and one plate fitting were processed and formed simultaneously.

[0030] Example 3 The method for forming pipes and plates using a T-shaped magnet collector includes the following steps: Step 1: Make a ring-shaped magnet collector with a coil cavity, and place the driving coil in the coil cavity; Step 2: Set and fix the tube and plate to be formed on the outside, top and bottom sides of the T-shaped magnet collector; Step 2.1: Place the pipe to be formed on the outside of the T-shaped magnet collector and fix it in place; Step 2.2: Place the plate to be formed on the upper and lower sides of the T-shaped magnet collector and fix it in place; Step 3: Connect the drive coil to the pulse power supply via a discharge switch; Step 4: Control the discharge switch to supply power to the drive coil, which will generate eddy currents in the tube or plate to be formed, causing the tube or plate to deform and achieve the forming specifications. Step 5: Determine whether the pipe or plate to be formed has reached the forming specifications. If there are pipes or plates that have not reached the forming specifications, remove the pipes or plates that have reached the forming specifications. Repeat steps 3 and 4 for the pipes or plates that have not reached the forming specifications until they reach the forming specifications.

[0031] like Figure 5 As shown, the device for simultaneously forming double-plate parts and tubes includes a T-shaped magnet collector 2, a drive coil 1, and a pulse power supply. The T-shaped magnet collector includes an outer convex ring 2.1, an upper convex ring 2.3, and a lower convex ring 2.4. The magnet collector has a coil cavity 2.5 and a through hole 2.6 for placing the tube to be formed. The side wall of the magnet collector has a slit 2.7. The cross-section of the magnet collector is T-shaped. The drive coil 1 is placed in the coil cavity 2.5 and is connected to the pulse power supply via a discharge switch.

[0032] In this embodiment, two plates and one pipe are processed and formed simultaneously, and both plates are expanded into basin-shaped parts.

[0033] Example 4 The method for forming pipes and plates using a T-shaped magnet collector includes the following steps: Step 1: Make a ring-shaped magnet collector with a coil cavity, and place the driving coil in the coil cavity; Step 2: Set and fix the tube and plate to be formed on the inside, top and bottom sides of the T-shaped magnet collector; Step 2.1: Place the pipe to be formed inside the T-shaped magnet collector and fix it in place; Step 2.2: Place the plate to be formed on the upper and lower sides of the T-shaped magnet collector and fix it in place; Step 3: Connect the drive coil to the pulse power supply via a discharge switch; Step 4: Control the discharge switch to supply power to the drive coil, which will generate eddy currents in the tube or plate to be formed, causing the tube or plate to deform and achieve the forming specifications. Step 5: Determine whether the pipe or plate to be formed has reached the forming specifications. If there are pipes or plates that have not reached the forming specifications, remove the pipes or plates that have reached the forming specifications. Repeat steps 3 and 4 for the pipes or plates that have not reached the forming specifications until they reach the forming specifications.

[0034] like Figure 6 As shown, the device for simultaneously forming double plates and tubes includes a T-shaped magnet collector 2, a drive coil 1, and a pulse power supply. The T-shaped magnet collector includes an inner convex ring 2.2, an upper convex ring 2.3, and a lower convex ring 2.4. The magnet collector has a coil cavity 2.5 and a through hole 2.6 for placing the tube to be formed. The side wall of the magnet collector has a slit 2.7. The cross-section of the magnet collector is T-shaped. The drive coil 1 is placed in the coil cavity 2.5 and is connected to the pulse power supply via a discharge switch.

[0035] In this embodiment, two plates and one pipe are processed and formed simultaneously.

Claims

1. A method of forming a tubular and a plate with a soil-shaped magnetic collector, characterized in that, Includes the following steps: Step 1: Make a ring-shaped magnet collector with a coil cavity, and place the driving coil in the coil cavity; Step 2: Set and fix the tube and plate to be formed on the upper, lower, inner and outer sides of the T-shaped magnet collector; Step 2.1: Place the tube to be formed inside and outside the T-shaped magnet collector and fix it in place; Step 2.2: Place the plate to be formed on the upper and lower sides of the T-shaped magnet collector and fix it in place; Step 3: Connect the drive coil to the pulse power supply via a discharge switch; Step 4: Control the discharge switch to supply power to the drive coil, which will generate eddy currents in the tube or plate to be formed, causing the tube or plate to deform and achieve the forming specifications. Step 5: Determine whether the pipe or plate to be formed has reached the forming specifications. If there are pipes or plates that have not reached the forming specifications, remove the pipes or plates that have reached the forming specifications. Repeat steps 3 and 4 for the pipes or plates that have not reached the forming specifications until they reach the forming specifications.

2. The method for forming pipes and plates using a T-shaped magnet collector according to claim 1, characterized in that, The T-shaped magnet collector is divided into upper and lower parts to facilitate the placement or removal of the drive coil.

3. The apparatus for forming pipes and plates using a T-shaped magnet as described in claim 1 or 2, characterized in that, The device includes a T-shaped magnet collector (2), a drive coil (1), and a pulse power supply. The T-shaped magnet collector includes an outer convex ring (2.1), an inner convex ring (2.2), and an upper convex ring (2.3). The T-shaped magnet collector has a coil cavity (2.5) and a through hole (2.6) for placing the tube to be formed. The side wall of the T-shaped magnet collector has a slit (2.7). The cross-section of the T-shaped magnet collector is T-shaped. The drive coil (1) is placed in the coil cavity (2.5). The drive coil (1) is connected to the pulse power supply via a discharge switch. The device enables the simultaneous processing and forming of two tubes and plates.

4. The apparatus for forming pipes and plates using a T-shaped magnet as described in claim 1 or 2, characterized in that, The device includes a T-shaped magnet collector (2), a drive coil (1), and a pulse power supply. The T-shaped magnet collector includes an outer convex ring (2.1), an inner convex ring (2.2), and a lower convex ring (2.4). The T-shaped magnet collector has a coil cavity (2.5) and a through hole (2.6) for placing the tube to be formed. The side wall of the T-shaped magnet collector has a slit (2.7). The cross-section of the T-shaped magnet collector is T-shaped. The drive coil (1) is placed in the coil cavity (2.5). The drive coil (1) is connected to the pulse power supply via a discharge switch. The device enables the simultaneous processing and forming of two tubes and plates.

5. The apparatus for forming pipes and plates using a T-shaped magnet as described in claim 1 or 2, characterized in that, The device includes a T-shaped magnet collector (2), a drive coil (1), and a pulse power supply. The T-shaped magnet collector includes an inner convex ring (2.2), an upper convex ring (2.3), and a lower convex ring (2.4). The T-shaped magnet collector has a coil cavity (2.5) and a through hole (2.6) for placing the tube to be formed. The side wall of the T-shaped magnet collector has a slit (2.7). The cross-section of the T-shaped magnet collector is T-shaped. The drive coil (1) is placed in the coil cavity (2.5). The drive coil (1) is connected to the pulse power supply via a discharge switch. The device enables the simultaneous processing and forming of the double plate and the tube.

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