Profiling device and method

Abstract

The invention relates to the field of mechanical precision machining, and provides a profiling machining device and method.The profiling machining method comprises the steps that a low-temperature phase-change material and a high-temperature phase-change material are arranged in a to-be-machined channel, and the high-temperature phase-change material is cured to form a first profiling body through temperature regulation and control; driving the first profiling body to grind the to-be-machined channel through the temperature regulation and control low-temperature phase-change material; the first profiling body is liquefied through temperature regulation and control, then the high-temperature phase-change material is solidified to form a second profiling body, the second profiling body is driven by the low-temperature phase-change material through temperature regulation and control to grind the to-be-machined channel, machining is stopped until the nth profiling body is matched with the inner wall meeting the machining requirement, and the nth profiling body is matched with the inner wall meeting the machining requirement; the defects that when a complex cavity is machined, precision is difficult to guarantee, accessibility is insufficient and the like are overcome, and machining precision is improved.

Description

Technical Field

[0001] This invention relates to the field of precision machining, and more specifically, to a contour machining apparatus and method. Background Technology

[0002] In fields such as aerospace, energy and power, and high-end equipment, the internal structure of the required parts is usually designed with multiple complex channels, such as serpentine cooling channels and irregularly shaped flow guide cavities. These internal structures are the key to achieving lightweighting, efficient heat dissipation, and optimized aerodynamic performance of the parts. However, the machining of such complex internal cavities and hole systems has long faced defects such as difficulty in ensuring accuracy and insufficient accessibility. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the purpose of this invention is to provide a contouring processing apparatus and method.

[0004] According to the present invention, a contour processing apparatus includes a temperature control component, and a workpiece having one or more processing channels, wherein at least one phase change material is disposed in the processing channel, and the phase change material contains abrasive particles. The phase change material in the processing channel can be temperature-controlled at at least one location by the temperature control component, thereby causing partial or complete phase change of the phase change material, resulting in partial or complete volume change of the phase change material. This causes one or more locations inside the phase change material to be displaced due to expansion force and / or suction force, and the displacement achieves scraping of the processing channel.

[0005] A contouring processing method according to the present invention includes the following steps: S1: At least one phase change material is disposed in one or more processing channels on the workpiece, and abrasive grains are disposed in the phase change material; S2: Temperature control is applied to at least one part of the phase change material in the processing channel by a temperature control component, causing partial or complete phase change of the phase change material. This results in partial or complete volume change of the phase change material, causing one or more parts inside the phase change material to be displaced due to expansion force and / or suction force. The displacement then achieves scraping of the processing channel.

[0006] A contouring processing method according to the present invention includes the following steps: M1: At least one low-temperature phase change material and at least one high-temperature phase change material are disposed in one or more processing channels on the workpiece, and the high-temperature phase change material is provided with abrasive particles. M2: The phase change material in the channel to be processed is temperature controlled by a temperature control component, so that the high-temperature phase change material is solidified to form the first shape-forming body. Then, the low-temperature phase change material is adjusted by temperature to drive the first shape-forming body to grind the inner wall of the channel to be processed. M3: The first profiling body is liquefied again by temperature control and then solidified by the high-temperature phase change material to form the second profiling body. The second profiling body is then driven by the low-temperature phase change material to grind the inner wall of the channel to be processed until the nth profiling body matches the inner cavity of the channel to be processed according to the processing requirements, and then the processing is stopped.

[0007] Preferably, the processing of the channel is completed when each part along the length of the channel to be processed meets the requirement of matching the inner cavity of the nth profilograph with the inner wall of the channel to be processed.

[0008] Preferably, the low-temperature phase change material contains abrasive particles.

[0009] A contouring processing method according to the present invention includes the following steps: N1: At least one low-temperature phase change material and at least one high-temperature phase change material are disposed in one or more processing channels on the workpiece, and the low-temperature phase change material is provided with abrasive particles. N2: The phase change material in the channel to be processed is temperature controlled by a temperature control component, thereby enabling the high-temperature phase change material to be cured in segments. N3: Temperature control between two adjacent sections of solidified high-temperature phase change material and the low-temperature phase change material, causing partial or complete phase change of the low-temperature phase change material, resulting in partial or complete volume change of the phase change material, causing one or more parts inside the low-temperature phase change material to be displaced due to expansion force and / or suction force, and achieving scraping of the channel to be processed due to the displacement. N4: Temperature control is used to solidify the high-temperature phase change material, making it soften or liquefy. The low-temperature phase change material is then moved and solidified by temperature control. N3 is then executed until all parts of the processing channel have completed the scraping action.

[0010] Preferably, it further includes any of the following configurations: The temperature control component is directly controlled by external heating and / or cooling equipment, or by electrical control. The temperature control component is equipped with an electromagnet, which is arranged circumferentially along the workpiece; the abrasive grains are magnetic particles, and the electromagnet achieves temperature control by heating the abrasive grains through electromagnetic induction. The workpiece being processed is a conductor.

[0011] Preferably, the electromagnet is a plurality of electromagnetic coils arranged continuously along the circumference of the workpiece.

[0012] Preferably, the electromagnet is a plurality of electromagnetic coils arranged sequentially along the extension direction of the channel to be processed.

[0013] Preferably, it further includes a driving mechanism that can drive the phase change material to move in the processing channel.

[0014] Preferably, the phase change material includes at least one of the following: paraffin; asphalt; plastic; tin; bismuth; Wood alloy; Tin-bismuth alloy; Gallium indium tin alloy.

[0015] Preferably, it further includes a controller, which is signal-connected to the electromagnet and thus capable of timing control of multiple electromagnetic coils in the electromagnet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention fills the processing channel of the workpiece with phase change material and configures abrasive grains in the phase change material. By controlling the temperature of one or more parts of the phase change material, the phase change material undergoes a phase change, which in turn causes a volume change in the phase change material. This displacement of the phase change material results in scraping and grinding of the processing channel, achieving the effect of precision machining of the inner wall of the processing channel.

[0017] 2. This invention fills the processing channel with low-temperature phase change material and high-temperature phase change material, and through temperature control, the high-temperature phase change material is repeatedly cured and subjected to shaping and scraping actions, which can achieve precision processing of the inner wall of the processing channel. Furthermore, the position of the high-temperature phase change material can be changed by driving fluid with a pump, ultimately achieving full shaping processing of the inner wall of the processing channel. This solves the problem of difficulty in ensuring accuracy when processing complex cavities and improves processing accuracy.

[0018] 3. In this invention, the abrasive grains are subjected to magnetic force by an electromagnet. While the fluid drives the abrasive grains to scrape the inner wall of the channel to be processed, the magnetic field force can drive the abrasive grains to generate directional force, so that the abrasive grains can be directionally attracted and guided, with good accessibility, which greatly improves the processing accuracy of the inner wall of the channel to be processed. Attached Figure Description

[0019] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic cross-sectional view of the structure of the present invention, wherein the fluid is a phase change material; Figure 2 This is a schematic cross-sectional view of the structure of the present invention, wherein the fluid is a combination of low-temperature phase change material and high-temperature phase change material; Figure 3 A cross-sectional schematic diagram of a workpiece heated by electrodes. Figure 4 This is a magnified schematic diagram of abrasive grinding in the channel to be processed. Figure 5 This is a schematic diagram of the cross-section of an electromagnetic coil continuously arranged along the circumference of the workpiece.

[0020] The diagram shows: Low-temperature phase change materials 001; High-temperature phase change material 002; Workpiece 1; Processing channel 11; Electromagnet 2; Electromagnetic coil 21; Drive mechanism 3; Control valve 31; Connecting pipe 32. Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0022] Example 1: This invention provides a contouring processing apparatus, including a temperature control component. The workpiece 1 has one or more processing channels 11, and at least one phase change material is disposed in the processing channel 11. The phase change material contains abrasive grains. The phase change material in the processing channel 11 can be temperature-controlled at least one part by the temperature control component, thereby causing part or all of the phase change material to undergo a phase change, resulting in part or all of the phase change material undergoing a volume change. One or more parts inside the phase change material are displaced due to expansion force and / or suction force, and the displacement achieves scraping of the processing channel 11.

[0023] The present invention also provides a contouring processing method, comprising the following steps: S1: At least one phase change material is disposed in one or more processing channels 11 on the workpiece 1, and abrasive grains are disposed in the phase change material; S2: At least one part of the phase change material in the processing channel 11 is temperature controlled by a temperature control component, thereby causing partial or complete phase change of the phase change material, resulting in partial or complete volume change of the phase change material. This causes one or more parts inside the phase change material to be displaced due to expansion force and / or suction force, and the displacement achieves scraping of the processing channel 11.

[0024] It should be noted that temperature control of at least one part of the phase change material includes, but is not limited to, heating or cooling at one point or multiple points spaced apart in the phase change material, heating or cooling all phase change materials in the processing channel 11, heating at least one location in the processing channel 11, and cooling at least one location. In short, temperature control causes partial or complete volume changes in the phase change material, resulting in displacement of one or more parts inside the phase change material due to expansion force and / or suction. This displacement causes the phase change material to drive abrasive particles to scrape the inner wall of the processing channel 11, thereby achieving the scraping and grinding of the processing channel 11.

[0025] The processing channel 11 in this invention can also be configured with various phase change materials with different melting points, so that when the phase change materials are heated, the different phase change materials experience mutual extrusion due to the volume change caused by the phase change, and generate a reciprocating scraping stroke due to the extrusion force. Specifically, this invention also provides a contouring processing method, such as... Figure 4 As shown, it includes the following steps: M1: At least one low-temperature phase change material 001 and at least one high-temperature phase change material 002 are configured in one or more processing channels 11 on the workpiece 1, and the high-temperature phase change material 002 is configured with abrasive particles; it should be emphasized that the low-temperature phase change material 001 may or may not be configured with abrasive particles, and can be flexibly selected according to the specific scenario. M2: The phase change material in the channel 11 to be processed is temperature controlled by the temperature control component, so that the high temperature phase change material 002 is solidified to form the first shape-forming body. Then, the low temperature phase change material 001 is controlled by temperature to drive the first shape-forming body to grind the inner wall of the channel 11 to be processed. M3: The first profiling body is liquefied again by temperature control and then solidified with high-temperature phase change material 002 to form the second profiling body. The second profiling body is then driven by low-temperature phase change material 001 to grind the inner wall of the channel 11 to be processed until the nth profiling body matches the inner cavity of the channel 11 to be processed when the processing requirements are met, and then the processing stops.

[0026] It should be noted that the processing of the channel 11 is completed and the processing standard is met when each part in the length direction of the channel 11 meets the requirements of the inner cavity matching between the nth model and the inner wall of the channel 11.

[0027] The present invention also provides a contouring processing method, comprising the following steps: N1: At least one low-temperature phase change material 001 and at least one high-temperature phase change material 002 are configured in one or more processing channels 11 on the workpiece 1, and the low-temperature phase change material 001 is configured with abrasive particles; it should be emphasized that the high-temperature phase change material 002 may or may not be configured with abrasive particles, and can be flexibly selected according to the specific scenario. N2: The phase change material in the processing channel 11 is temperature-controlled by a temperature control component, thereby enabling the high-temperature phase change material 002 to be cured in segments. N3: Temperature control between two adjacent sections of high-temperature phase change material 002 and low-temperature phase change material 001 causes partial or complete phase change of low-temperature phase change material 001, resulting in partial or complete volume change of low-temperature phase change material 001. This causes one or more parts inside low-temperature phase change material 001 to be displaced due to expansion force and / or suction force, and the displacement achieves scraping of the channel 11 to be processed. N4: Temperature control is used to solidify the high-temperature phase change material 002, making it soft or liquefied. The low-temperature phase change material 001 is used to control the temperature, causing the high-temperature phase change material 002 to move and solidify. N3 is then executed until all parts in the processing channel 11 have completed the scraping action.

[0028] In this embodiment, an electromagnet 2 is also provided. The temperature is controlled by the electromagnet 2. The electromagnet 2 is arranged around the circumference of the workpiece 1. The abrasive particles are magnetic particles, preferably ferromagnetic particles. The electromagnet 2 can heat up the abrasive particles through electromagnetic induction to achieve temperature rise. After the electromagnet 2 is de-energized, the abrasive particles no longer heat up to achieve temperature drop. Through the above control, the temperature of the phase change material can be controlled by adjusting the temperature of the abrasive particles.

[0029] Specifically, the phase change material can be made of various materials, including metallic or non-metallic materials. For example, it can be at least one of paraffin wax, asphalt, plastic, tin, bismuth, Wood's alloy, tin-bismuth alloy, and gallium-indium-tin alloy. The plastic can be any one of polyethylene, polypropylene, polyvinyl chloride, and ethylene-vinyl acetate copolymer, but is not limited to these types of plastics. The low-temperature phase change material 001 and the high-temperature phase change material 002 in this invention can be selected based on their melting points and combined for contour processing.

[0030] The processing channel 11 in this invention can be a straight channel, a curved channel, a combination of a straight channel and a curved channel, or other regular or irregular curved channels.

[0031] Example 2: The difference between this embodiment and the previous one is that the temperature is controlled directly by an external heating device and / or cooling device. For example, heating devices and / or cooling devices in the prior art such as electric heating wires and heating coils can be used, which will not be described in detail here.

[0032] Example 3: The difference between this embodiment and embodiment 1 is that the electromagnet 2 consists of multiple electromagnetic coils 21 continuously arranged along the circumference of the workpiece 1, such as... Figure 5 As shown, when multiple electromagnetic coils 21 are connected, a ring-shaped magnetic field can be formed.

[0033] When multiple electromagnetic coils 21 are energized one by one, a rotating magnetic field can be formed, achieving a special finishing effect driven by the rotation of ferromagnetic particles.

[0034] It should be noted that when current is passed through the electromagnet 2, a magnetic field is generated. This magnetic field acts on the abrasive grains, which can position the abrasive grains at a specific position or within a certain spatial range in the channel 11 to be processed. The electromagnetic force on the ferromagnetic particles can cause the ferromagnetic particles to produce a scraping action that adheres to the wall, resulting in a scraping effect inside the channel 11 to be processed, which can improve the finishing effect inside the channel 11 to be processed.

[0035] Example 4: The difference between this embodiment and embodiment 1 is that the electromagnet 2 consists of multiple electromagnetic coils 21 arranged sequentially along the length of the channel 11 to be processed. Different currents can be applied to different electromagnetic coils 21 extending along the length of the channel 11 to be processed, so as to achieve temperature control differences in various parts. This can generate complex displacements inside the phase change material and achieve smoothing of the inner wall of the channel 11 to be processed.

[0036] In practical applications, the electromagnet 2 can also be a heating element to heat the workpiece 1. When the temperature of the workpiece 1 is high and exceeds the temperature of the electromagnet 2, the electromagnet 2 can be used as a cooling element.

[0037] Example 5: The difference between this embodiment and embodiment 1 is that, Figure 1 As shown, it also includes a drive mechanism 3, which can drive the phase change material to move in the processing channel 11. Specifically, the drive mechanism 3 includes a power pump, a connecting pipe 32 and a control valve 31. The two ends of the processing channel 11 are connected to the power pump through the connecting pipe 32. The control valve 31 is configured on the connecting pipe 32 and is used to control the opening and closing of the connecting pipe 32.

[0038] Specifically, the control valve 31 on the connecting pipe 32 is opened, and one end of the processing channel 11 is connected to the inlet of the power pump and the other end is connected to the outlet of the power pump, forming an overall drive arrangement of suction and extraction to drive the fluid inside the processing channel 11. In this embodiment, while performing small displacement scraping operations inside the phase change material, a smoothing effect of large displacement circulation or reciprocating motion of the phase change material can be achieved. With the magnetic force control of the abrasive particles by the electromagnet 2, the smoothing effect can be better in certain processing scenarios.

[0039] It should be noted that the present invention can achieve the suction action by connecting one power pump to both ends of the processing channel 11, or by using multiple power pumps respectively arranged at both ends of the processing channel 11.

[0040] In this invention, the high-temperature phase change material 002 is processed by contour scraping in the processing channel 11 through accumulation in the length direction. The movement of the high-temperature phase change material 002 is preferably accomplished by the driving mechanism 3.

[0041] Example 6: The difference between this embodiment and embodiment 1 is that the contouring processing device is also equipped with a controller. The controller is connected to the electromagnet 2. The controller can perform timing control on multiple electromagnetic coils 21 in the electromagnet 2 according to the software settings, so that the temperature changes of various parts of the phase change material are more conducive to the scraping effect generated by the internal phase change volume change.

[0042] Example 7: This embodiment is a preferred example of Embodiment 1, where the phase change material is paraffin, such as... Figure 1 As shown, when an alternating current is applied to the electromagnet 2, the abrasive grains are heated, which in turn generates heat, causing the paraffin wax to become liquid. By controlling different electromagnetic coils 21, the temperature of the phase change material in different parts can be made different. Due to the temperature change, the volume of the paraffin wax changes, causing the paraffin wax to expand or contract and thus causing a small displacement, which achieves the action of scraping the inner wall. At the same time, the driving mechanism 3 can make the liquid paraffin wax drive the abrasive grains to reciprocate or circulate in the processing channel 11 to achieve scraping and finishing.

[0043] Meanwhile, the magnetic field force generated by the electromagnet 2 can control the abrasive particles to adhere to the wall and rotate, achieving a specific scraping effect and improving the overall processing accuracy.

[0044] Example 8: The difference between this embodiment and Embodiment 1 is that the processing channel 11 is equipped with low-temperature phase change material 001 and high-temperature phase change material 002, which are arranged in segments at different positions within the processing channel 11. Figure 2As shown, when the temperature of the abrasive grains changes, the low-temperature phase change material 001 and / or the high-temperature phase change material 002 can undergo a phase change, resulting in a change in volume and generating a squeezing force between them, or a negative pressure space generated due to the decrease in volume, which generates a negative pressure pulling force. Due to the squeezing force, a reciprocating scraping stroke is generated. This scraping motion, together with the magnetic force acting on the abrasive grains and the fluid driving force of the drive mechanism 3, makes the scraping motion more complex and the finishing effect better.

[0045] In this embodiment, the low-temperature phase change material 001 can be paraffin or Wood's alloy, and the high-temperature phase change material 002 can be tin, bismuth, tin-bismuth alloy, gallium-indium-tin alloy, etc.

[0046] Example 9: In this embodiment, the workpiece 1 is a conductor, and electrodes 12 are respectively disposed at both ends of the workpiece 1, such as... Figure 3 As shown, the workpiece 1 can be electrically heated by the electrode 12, thereby achieving temperature control of the phase change material in the processing channel 11.

[0047] by Figure 2 For example, the working principle of this invention is as follows: First, a low-temperature phase change material 001 and a high-temperature phase change material 002 are disposed in the processing channel 11 on the workpiece 1, and abrasive particles are disposed in both the low-temperature phase change material 001 and the high-temperature phase change material 002. Secondly, the phase change material in the processing channel 11 is temperature controlled by a temperature control component, so that the high-temperature phase change material 002 solidifies to form the first profilotype. Then, the low-temperature phase change material 001 is used to drive the first profilotype to reciprocate grinding the inner wall of the processing channel 11. Next, the first profiling body is liquefied again and then solidified by temperature control to form a second profiling body by high-temperature phase change material 002. The second profiling body conforms to the inner wall of the channel 11 to be processed at the current location. Then, the second profiling body is driven by low-temperature phase change material 001 to grind the inner wall of the channel 11 to be processed until the nth profiling body matches the inner cavity of the channel 11 to be processed at the processing requirements, and then the processing stops. Finally, the high-temperature phase change material 002 is moved to the next processing position of the channel 11 to be processed and the above processing steps are continued. When each part of the channel 11 to be processed in the length direction meets the requirement of the nth model body matching the inner cavity of the inner wall of the channel 11 to be processed, the channel 11 to be processed is completed.

[0048] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A contouring processing device, characterized in that, Includes a temperature control component, and the workpiece (1) has one or more processing channels (11), wherein at least one phase change material is disposed in the processing channel (11), and the phase change material contains abrasive particles; The phase change material in the processing channel (11) can be temperature controlled at at least one part by the temperature control component, thereby causing partial or complete phase change of the phase change material, resulting in partial or complete volume change of the phase change material. This causes one or more parts inside the phase change material to be displaced due to expansion force and / or suction force, and the displacement achieves scraping of the processing channel (11).

2. A contouring processing method, characterized in that, Includes the following steps: S1: At least one phase change material is disposed in one or more processing channels (11) on the workpiece (1) and abrasive grains are disposed in the phase change material; S2: Temperature control is applied to at least one part of the phase change material in the processing channel (11) by a temperature control component, thereby causing partial or complete phase change of the phase change material, resulting in partial or complete volume change of the phase change material. This causes one or more parts inside the phase change material to be displaced due to expansion force and / or suction force, and the displacement achieves scraping of the processing channel (11).

3. A contouring processing method, characterized in that, Includes the following steps: M1: At least one low-temperature phase change material (001) and at least one high-temperature phase change material (002) are disposed in one or more processing channels (11) on the workpiece (1), and the high-temperature phase change material (002) is provided with abrasive grains; M2: The phase change material in the channel to be processed (11) is temperature controlled by a temperature control component, so that the high-temperature phase change material (002) is solidified to form the first shape-forming body. Then, the low-temperature phase change material (001) is adjusted by temperature to drive the first shape-forming body to grind the inner wall of the channel to be processed (11). M3: The first profiling body is liquefied again by temperature control and then solidified by the high temperature phase change material (002) to form the second profiling body. The low temperature phase change material (001) is then used to drive the second profiling body to grind the inner wall of the channel to be processed (11) until the nth profiling body matches the inner cavity of the channel to be processed (11) when the processing requirements are met, and then the processing is stopped.

4. A contouring processing method, characterized in that, Includes the following steps: N1: At least one low-temperature phase change material (001) and at least one high-temperature phase change material (002) are disposed in one or more processing channels (11) on the workpiece (1), and the low-temperature phase change material (001) is provided with abrasive grains; N2: The phase change material in the channel to be processed (11) is temperature controlled by a temperature control component, thereby causing the high-temperature phase change material (002) to be solidified in segments; N3: Temperature control between two adjacent sections of solidified high-temperature phase change material (002) and the low-temperature phase change material (001) causes partial or complete phase change of the low-temperature phase change material (001), resulting in partial or complete volume change of the low-temperature phase change material (001). This causes one or more parts inside the low-temperature phase change material (001) to be displaced due to expansion force and / or suction force, and the displacement achieves scraping of the channel to be processed (11). N4: Temperature control is used to solidify the high-temperature phase change material (002) so that it is softened or liquefied. The low-temperature phase change material (001) is used to control the temperature so that the high-temperature phase change material (002) moves to a new position and is then solidified. N3 is then executed until all parts of the channel to be processed (11) have completed the scraping action.

5. The contouring processing method according to claim 3, characterized in that, When each part of the channel to be processed (11) in the length direction meets the requirement of matching the inner cavity of the nth model with the inner wall of the channel to be processed (11) in accordance with the processing requirements, the channel to be processed (11) is completed.

6. The contouring apparatus according to claim 1 or the contouring method according to any one of claims 2 to 5, characterized in that, It also includes any of the following configurations: The temperature control component is directly controlled by external heating and / or cooling equipment, or by electrical control. The temperature control component is equipped with an electromagnet (2), which is arranged circumferentially along the workpiece (1); the abrasive grains are magnetic particles, and the electromagnet (2) achieves temperature control by heating the abrasive grains through electromagnetic induction. The workpiece (1) being processed is a conductor.

7. The contouring processing apparatus or the contouring processing method according to claim 6, characterized in that, The electromagnet (2) is a plurality of electromagnetic coils (21) arranged continuously along the circumference of the workpiece (1); and / or the electromagnet (2) is a plurality of electromagnetic coils (21) arranged sequentially along the extension direction of the length of the channel to be processed (11).

8. The contouring apparatus according to claim 1 or the contouring method according to any one of claims 2 to 5, characterized in that, It also includes a drive mechanism (3); The drive mechanism (3) can drive the phase change material to move in the processing channel (11).

9. The contouring apparatus according to claim 1 or the contouring method according to any one of claims 2 to 5, characterized in that, The phase change material includes at least one of the following: paraffin; asphalt; plastic; tin; bismuth; Wood alloy; Tin-bismuth alloy; Gallium indium tin alloy.

10. The contouring processing apparatus or the contouring processing method according to claim 6, characterized in that, It also includes a controller that is signal-connected to the electromagnet (2) and is thus able to perform timing control on the multiple electromagnetic coils (21) in the electromagnet (2).

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