CN111633347A - A laser cutting equipment with electromagnetic assisted pretreatment - Google Patents

Abstract

The invention belongs to the technical field of laser cutting, and discloses a laser cutting equipment with electromagnetic auxiliary pretreatment. The laser cutting equipment comprises an input and output device, an integrated industrial computer, a laser generator, an electric motion mechanism of a laser cutting machine tool, a laser cutting head and a The electromagnetic induction heating device, the input and output device, the laser generator, the laser cutting head, the electric motion mechanism of the laser cutting machine tool and the electromagnetic induction heating device are respectively connected to the integrated industrial computer, and the laser cutting head and the electromagnetic induction heating device are respectively connected to the electric motor of the laser cutting machine Movement mechanism; the input and output device is used to input various process parameters to the integrated industrial computer, and the integrated industrial computer is used to control the laser generator, the electric movement mechanism of the laser cutting machine tool, the laser cutting head and the electromagnetic induction correspondingly according to the received process parameters. heating equipment. The invention improves the cutting quality and efficiency and reduces the cost.

Description

A laser cutting equipment with electromagnetic assisted pretreatment

technical field

The invention belongs to the technical field of laser cutting, and more particularly, relates to a laser cutting device with electromagnetic auxiliary pretreatment.

Background technique

At present, the laser power of the most widely used laser cutting equipment in industrial applications is generally around several kilowatts, and the metal materials to be cut are mainly concentrated in thin plates below 4.5mm and medium and thick plates from a few millimeters to a dozen millimeters. In recent years, with the rapid development of 10,000-watt fiber lasers at home and abroad, and the needs of laser cutting of thick metal plates with a thickness of more than 25mm in various industry applications, ultra-high-power laser cutting equipment with a thickness of more than 10,000 watts is used. The plan of cutting thick plates is being gradually promoted in the field of industrial applications.

Laser cutting of thick metal plates has the following two outstanding problems: 1. It is difficult for the laser beam to penetrate the metal plate to form a discharge channel for molten metal in the slit, so that the slit cannot be formed with the movement of the laser beam relative to the plate. 2. For thick plates, due to the larger size in the thickness direction, the path for the molten metal to flow downward in the slit is longer. During the downward flow of the molten metal, it exchanges heat with the plate and auxiliary gas, so that the temperature gradually decreases and the viscosity increases. Slag is formed at the bottom and even blocks the kerf so that the cut sheets cannot be separated.

For thick plate laser cutting, the industrial method is to use ultra-high-power lasers of more than 10,000 watts as much as possible, but the accompanying problem is that the price of ultra-high-power lasers of more than 10,000 watts is still very expensive. For metal materials such as aluminum alloys, the higher the laser power, the more energy is lost, resulting in huge waste in industrial production.

At present, those skilled in the art have done some research. For example, patent CN103659004A discloses a laser cutting pretreatment device, a laser cutting device and a laser cutting method, which use a laser as an auxiliary heat source to preprocess thermoplastic polymer materials. Heat, so that the material at the position to be cut is heated in the solid-liquid mixed phase area, and then the solid-liquid mixed phase area is cut by laser. Another example is the patent CN110293324A which discloses an electromagnetic field-assisted laser cutting method, which uses an electromagnetic coil as an auxiliary device. By adding an electromagnetic field during the laser cutting process, a downward external force-Lorentz force is generated on the molten metal cut by the laser, so as to reduce the amount of laser cutting. Strengthen the downward flow of molten metal, and finally solve the problem of "reverse spray" of molten metal upward at the corners of laser cutting thick plates, resulting in the inability to continue cutting.

However, patent CN103659004A uses a laser as an auxiliary heat source to preheat the position of the material to be cut, and proposes two examples. Example 1 uses two sets of laser equipment, one set is used for preheating the material to be cut, and the other set is used for laser cutting the material. Since the laser is the core component of laser cutting equipment, its price occupies the most important part of the whole set of cutting equipment. Therefore, the use of two sets of laser cutting equipment will inevitably increase the input cost, and the operation process is cumbersome, which is not conducive to the promotion of industrial applications. In Example 2, a laser is used, and a beam splitting device is used to split the laser beam into two, one for preheating the material, and the other for cutting the material. Since this solution requires light splitting, the required laser power must be large enough, which directly increases the equipment cost, and the light splitting device is a precision optical device that can withstand a high power density laser beam, and the price is also expensive. In addition, due to some metal materials that are highly reflective to the laser, such as aluminum alloys, a large amount of laser energy will be reflected and lost during the laser irradiation process. After heating, the absorption of the cutting laser will be improved to a certain extent, but during preheating, it will have a high reaction to the preheating laser, and a large amount of preheating laser energy will be lost and the preheating effect will be poor.

Patent CN110293324A uses electromagnetic coil as an auxiliary device, and through the introduction of electromagnetic field to generate a downward external force on cutting molten metal - Lorentz force, the fluidity of molten metal is improved, and the flow and discharge effect of molten metal in the slit is enhanced, thereby Solved the phenomenon of "reverse spray" at the corners of the cutting path. Although this scheme improves the flow of molten metal during the cutting process by adding auxiliary means, but for the starting point position of cutting, the position where the material is to be cut needs to absorb enough energy to achieve the melting penetration effect before forming molten metal. Flow discharge channels, the use of electromagnetic coils to apply Lorentz force to the molten metal obviously cannot solve this problem. In addition, the scope of application of the patented solution is only applicable to solving the phenomenon of "reverse jetting" at the corners of the cutting path, and cannot produce a complete auxiliary improvement effect for the entire laser cutting process.

SUMMARY OF THE INVENTION

In view of the above defects or improvement needs of the prior art, the present invention provides a laser cutting equipment with electromagnetic auxiliary pretreatment. When the thick plate is laser cut, the laser beam is not easy to penetrate the plate to form a molten metal discharge channel, and the molten metal flows and discharges in the cutting slot is not smooth, which causes cutting slag and obstructs the discharge channel, and improves the cutting efficiency and quality. cost.

In order to achieve the above object, according to one aspect of the present invention, a laser cutting equipment with electromagnetic auxiliary pretreatment is provided, the laser cutting equipment includes an input and output device, an integrated industrial computer, a laser generator, an electric motion mechanism of a laser cutting machine tool, Laser cutting head and electromagnetic induction heating device, the input and output device, the laser generator, the laser cutting head, the electric motion mechanism of the laser cutting machine tool and the electromagnetic induction heating device are respectively connected to the integrated industrial computer , the laser cutting head and the electromagnetic induction heating device are respectively connected to the electric motion mechanism of the laser cutting machine;

The input and output device is used to input various process parameters to the integrated industrial computer, and the integrated industrial computer is used to respectively control the laser generator and the electric motion mechanism of the laser cutting machine according to the received process parameters. , the laser cutting head and the electromagnetic induction heating device;

When working, the electromagnetic induction heating device is in front and the laser cutting head is behind. The electromagnetic induction heating device is used to inductively preheat the position of the material to be cut. The laser beam emitted by the laser generator and the cutting gas The coaxial output from the laser cutting head is used to cut the position of the material to be cut.

Further, the laser cutting equipment includes a water cooling system, and the water cooling system is respectively connected to the laser generator and the laser cutting head.

Further, the laser cutting equipment includes an air compressor and a cutting gas generating device, and the air compressor and the cutting gas generating device are respectively connected to the laser cutting head.

Further, the electromagnetic induction heating device includes an electromagnetic induction coil clamping mechanism and an electromagnetic induction coil, the electromagnetic induction coil clamping mechanism is connected to the electric motion mechanism of the laser cutting machine tool, and the electromagnetic induction coil is arranged on the electric motor. Magnetic induction coil clamping mechanism.

Further, various process parameters include the output power of the laser generator, the motion path and motion speed of the electric motion mechanism of the laser cutting machine tool, the parameters of the laser cutting head and the parameters of the electromagnetic induction coil.

Further, the electric motion mechanism of the laser cutting machine tool is used to drive the laser cutting head and the electromagnetic induction heating device to complete the preset motion trajectory according to the preset speed V according to the signal communicated by the integrated industrial computer.

Further, the cutting gas is active gas, inactive gas or inert gas.

Further, the integrated industrial computer adjusts the distance between the nozzle end of the laser cutting head and the surface of the material to be cut to a preset value in real time through the electric motion mechanism of the laser cutting machine tool.

Further, the working modes of the laser cutting equipment include starting point preheating mode, follow-up heating method, starting point preheating + follow-up heating method, starting point preheating + variable speed cutting method, follow-up heating + variable speed cutting method, and starting point preheating method. Heat + follow-up heating + variable speed cutting mode.

In general, compared with the prior art, the electromagnetic-assisted pretreatment laser cutting equipment provided by the present invention mainly has the following beneficial effects:

1. The electromagnetic induction coil is used to preheat the thick metal plate to be cut, and the electromagnetic induction coil and the laser beam are integrated. Through the two synergistic effects on the workpiece to be cut, the cutting starting point position is easier to penetrate and form melting under the action of the laser. The metal flows and discharges the channel, and the temperature of the metal substrate to be cut is increased by preheating during the laser cutting process, and the viscous force between the cut surface and the molten metal piece is reduced, which is more conducive to the flow and discharge of the molten metal from the slit, forming a well-shaped cut surface , improve the cutting quality and efficiency.

2. After the electromagnetic auxiliary preheating device is used to input enough heat to the cutting material, the cutting speed can be increased to a certain extent, which solves the problem that the starting position of the material cutting needs to input high enough energy to reach a certain temperature threshold before it can melt and penetrate, forming a molten The problem of metal flow and discharge channel is solved, and the cutting surface needs to maintain a certain temperature during the cutting process, so as to avoid the viscous force between the molten metal force model and the cutting surface being too large and staying in the cutting seam, reducing the cutting quality. problem, improves the fluidity of the molten metal and improves the cutting quality.

3. Due to the use of electromagnetic auxiliary preheating, the phenomenon of high reflection of aluminum alloy and other materials when using laser as auxiliary heat source for preheating is solved, which can produce better preheating effect.

4. Since the temperature of the metal material increases after the electromagnetic auxiliary preheating is used, the absorption rate of the laser is improved to a certain extent. Therefore, the output power of the laser can be reduced compared with the electromagnetic auxiliary preheating.

5. The laser cutting equipment has a simple structure, is easy to operate, has a lower price than high-power laser equipment, and saves economic costs.

Description of drawings

Fig. 1 is the schematic diagram of the laser cutting equipment of electromagnetic-assisted pretreatment provided by the present invention;

Fig. 2 is the schematic diagram of the laser cutting head and the electromagnetic induction coil of the laser cutting equipment of the electromagnetic auxiliary pretreatment in Fig. 1;

Fig. 3 is the working schematic diagram of the laser cutting equipment of electromagnetic auxiliary pretreatment in Fig. 1 adopting the starting point preheating mode;

Fig. 4 is the working schematic diagram of the laser cutting equipment of electromagnetic auxiliary pretreatment in Fig. 1 adopting the follow-up heating method and the starting point preheating+follow-up heating method;

Fig. 5 is the working schematic diagram of the laser cutting equipment of electromagnetic auxiliary pretreatment in Fig. 1 adopting the starting point preheating + variable speed cutting mode;

FIG. 6 is a working schematic diagram of the electromagnetic-assisted pretreatment laser cutting equipment in FIG. 1 adopting the follow-up heating + variable-speed cutting method and the starting point preheating + follow-up heating + variable-speed cutting method.

In all drawings, the same reference numerals are used to denote the same elements or structures, wherein: 10-laser cutting metal workpiece, 11-laser cutting machine table, 12-laser cutting head, 13-electromagnetic induction heating device, 131- Electromagnetic induction coil clamping mechanism, 132- Electromagnetic induction coil, 14- Cutting gas generator, 141- Cutting gas, 15- Air compression system, 16- Water cooling system, 17- Laser generator, 171- Laser beam, 18 -Integrated industrial computer, 19-input and output device, 20-electric motion mechanism of laser cutting machine tool.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Please refer to FIG. 1 and FIG. 2 , the laser cutting equipment provided by the present invention provides electromagnetic auxiliary pretreatment. The laser cutting equipment adopts electromagnetic auxiliary device as a preheating heat source to perform auxiliary preheating in the laser cutting process. The purpose of improving the laser cutting effect of metal thick plates.

The laser cutting equipment includes an input and output device 19, an integrated industrial computer 18, a laser generator 17, an electric motion mechanism of a laser cutting machine tool 20, a laser cutting head 12, an electromagnetic induction heating device 13, a cutting gas generating device 14, and a laser cutting machine tool. Table 11, air compression system 15 and water cooling system 16, the laser cutting head 12 and the electromagnetic induction heating device 13 are respectively connected to the electric motion mechanism 20 of the laser cutting machine tool, the laser generator 17, the laser cutting The machine tool electric motion mechanism 20 and the input and output device 19 are respectively connected to the integrated industrial computer 18 . The air compressor 15 and the cutting gas generating device 14 are respectively connected to the laser cutting head 12 . The water cooling system 16 is respectively connected to the laser generator 17 and the laser cutting head 12 , and the laser generator 17 is connected to the laser cutting head 12 . The laser cutting machine table 11 is located below the laser cutting head 12 , which is used to carry the laser cutting metal workpiece 10 .

In this embodiment, the electromagnetic induction heating device 13 includes an electromagnetic induction coil clamping mechanism 131 and an electromagnetic induction coil 132. The electromagnetic induction coil clamping mechanism 131 is connected to the electric motion mechanism 20 of the laser cutting machine tool. The magnetic induction coil 132 is arranged on the electromagnetic induction coil clamping mechanism 131 ; the laser cutting head 12 and the electromagnetic induction heating device 13 are respectively connected to the integrated industrial computer 18 .

The input and output device 19 is used to input various process parameters to the integrated industrial computer 18, and the process parameters include setting the output power of the laser generator 17, the motion path of the electric motion mechanism 20 of the laser cutting machine tool, and Movement speed, parameters of the laser cutting head 12 , parameters of the electromagnetic induction coil 132 , and execution feedback of various parameters of the integrated industrial computer 18 are displayed.

The integrated industrial computer 18 is used to convert the various process parameters from the input and output device 19 into parameters that can be combined with the laser generator 17, the electric motion mechanism 20 of the laser cutting machine tool, the laser cutting head 12, and all other components. The electromagnetic induction coil 132 communicates the signal, so that the above-mentioned equipment completes the set action according to the signal, and the monitoring device records the implementation of the signal in real time.

The laser generator 17 is used to generate a laser beam 171 for cutting materials, and control the power P1 of the output laser according to the signal communicated by the integrated industrial computer 18. The laser generator 17 is connected to the laser cutting head through an optical fiber. 12. The electric motion mechanism 20 of the laser cutting machine is used to drive the laser cutting head 12 and the electromagnetic induction heating device 13 to complete a preset motion trajectory at a preset speed V according to the signal communicated by the integrated industrial computer 18 .

The laser cutting head 12 is used to output the laser light transmitted from the optical fiber to the position where the material is to be cut, and adjust the spatial position of the optical components inside it according to the signal communicated by the integrated industrial computer 18 to adjust the laser beam 171 . Focus position and focal length f; according to the signal of the integrated industrial computer 18, adjust the cutting gas output pressure Pa through the matching solenoid valve mechanism, wherein the cutting gas type can choose active gas, inactive gas and inert gas according to different cutting materials, The cutting gas is output coaxially with the laser beam 171; according to the signal of the integrated industrial computer 18, the distance between the nozzle end of the laser cutting head 12 and the surface of the cutting material is adjusted to a preset value Δd, and the The capacitive sensor and its internal electric motion device or the electric motion mechanism of the cutting machine drive the laser cutting head 12 to adjust the spatial position in real time during the cutting process, so as to ensure that the distance Δd between the nozzle end and the material surface does not follow the material during the cutting process. The surface is uneven or the material is changed due to thermal expansion and vibration.

The electromagnetic induction heating device 13 is used to adjust the output power for heating the material according to the signal of the integrated industrial computer 18, and is driven by the electric motion mechanism 20 of the laser cutting machine to adjust the electromagnetic induction heating device 13 distance from the cut material.

The cutting gas generating device 14 is used for outputting a specific type of cutting gas 141 according to application requirements, and it outputs the cutting gas 141 with a specific pressure to the laser cutting head 12 through an internal adjustment device.

The air compression system 15 is used to compress the air to a specific pressure, and output the compressed air of a specific pressure to the laser cutting head 12 through an internal pressure regulating device, so as to cool the nozzle of the laser cutting head 12 .

The water cooling system 16 is used to heat or cool the circulating water to a specific temperature T, and transmit the circulating water with a preset flow rate and temperature to the laser cutting head 12 , the fiber interface and the laser generator 17 for cooling.

When the laser cutting equipment is working, the electromagnetic induction coil 132 is in front and the laser cutting head 12 is behind. The electromagnetic induction coil 132 inductively preheats the position of the material to be cut. The coaxial output of the cutting gas 141 cuts the material at the position to be cut, wherein the heating range of the material by the electromagnetic induction coil 132 covers the irradiation position of the laser beam 171 . When performing the cutting process, the electromagnetic induction coil 132 stays above the cutting starting point position with a specific power P ₂ and heats for a preset period of time t, after which the electromagnetic induction coil 132 moves away rapidly, and at the same time the laser cutting head 12 rapidly moves to Above the position of the cutting starting point, and output the coaxial laser and cutting gas, according to the preset laser power P ₁ and the preset cutting pressure Pa, start from the cutting starting point and cut along the to-be-cutting path according to the preset cutting speed V; or the electromagnetic induction coil 132 moves synchronously with the laser cutting head 12 according to the preset cutting speed V, the electromagnetic induction coil 132 moves in accordance with the path to be cut with a specific power P ₂ and heats the material in real time, and the laser cutting head 12 follows The material is cut along the path to be cut according to the preset laser power P ₁ and the preset cutting air pressure Pa; the above two methods can also be combined, that is, the electromagnetic induction coil 132 stays above the cutting starting point with a specific power P ₂ and heats it After a preset duration t, the electromagnetic induction coil 132 and the laser cutting head 12 move synchronously along the path to be cut according to the preset cutting speed V, and the electromagnetic induction coil 132 moves along the cutting path with a specific power P ₂ The material is heated in real time, and the laser cutting head 12 starts to output the coaxial laser and cutting gas when it moves to the top of the cutting starting point. From then on, the preset cutting speed V is performed with the preset laser power P ₁ and the preset cutting pressure Pa. cut.

Since the position to be cut has been heated by the electromagnetic induction coil 132 before the laser beam acts on the metal cutting material, the starting point position of the cutting is easy to penetrate under the action of the laser to form a flow and discharge channel of the molten metal, and the molten metal and the cut surface are easily formed during the cutting process. The viscous force is small, and the molten metal is easy to flow out of the slit, forming a good quality cut surface. The above process parameters are set and selected according to the optimization results corresponding to different scene conditions in practical applications.

The laser cutting equipment has the following six preheat cutting methods designed according to different cutting process requirements:

Method 1: starting point preheating method, as shown in FIG. 3 , the electromagnetic induction coil 132 stays above the cutting starting point position A with a specific power P ₂ and heats for a preset period of time t, and then the electromagnetic induction coil 132 moves away quickly , at the same time, the laser cutting head 12 quickly moves to above the cutting starting point position A, and outputs the coaxial laser beam 171 and the cutting gas 141. According to the preset laser power P1 and the preset cutting pressure Pa, starting from the cutting starting point _A according to The preset cutting speed V cuts along the path to be cut.

Method 2: follow-up heating method, as shown in FIG. 4 , the electromagnetic induction coil 132 and the laser cutting head 12 move synchronously according to the preset cutting speed V, and the electromagnetic induction coil 132 starts from the starting point A along the to-be-cut While the path moves, the material is heated in real time with a specific power P ₂ , and the laser cutting head 12 follows it and outputs the coaxial laser beam 171 and the cutting gas 141 from the starting point A, according to the preset laser power P ₁ and preset laser power The cutting air pressure Pa is set to cut the material along the path to be cut.

Method 3: starting point preheating + follow-up heating method, as shown in FIG. 4 , the electromagnetic induction coil 132 stays above the cutting starting point A with a specific power P ₂ and heats for a preset time period t, and then the electromagnetic induction coil 132 The laser cutting head 12 moves synchronously with the laser cutting head 12 along the path to be cut according to the preset cutting speed V. _The electromagnetic induction coil 132 heats the material in real time with a specific power P2 while moving along the cutting path. The laser cutting head 12 The coaxial laser and cutting gas 141 are output when moving to above the cutting starting point position A. From then _on , cutting is carried out according to the preset laser power P1 and the preset cutting pressure Pa and according to the preset cutting speed V.

Method 4: starting point preheating + variable speed cutting method, as shown in FIG. 5 , the electromagnetic induction coil 132 stays above the cutting starting point position A with a specific power P ₂ and heats for a preset period of time t, and then the electromagnetic induction coil 132 Quickly move away, and at the same time, the laser cutting head 12 quickly moves to above the cutting starting point position A, and outputs the coaxial laser and cutting gas 141, starting from the cutting starting point _A according to the preset laser power P1 and the preset cutting gas pressure Pa According to the preset cutting speed V, the cutting is performed along the path to be cut to point B. During the process of moving the laser beam 171 from point A along the cutting path by _a certain distance d1 to point B, the metal substrate absorbs heat due to heat exchange while the slit is formed. With enough energy, the temperature of the metal substrate has increased significantly after thermal diffusion, forming a preheating effect. At this time, the molten metal flow and discharge effect is good, and the cutting speed can be appropriately increased while ensuring the cutting quality. speed for more efficient cutting.

Method 5: follow-up heating + variable speed cutting method, as shown in FIG. 6 , the electromagnetic induction coil 132 and the laser cutting head 12 move synchronously according to the preset cutting speed V, and the electromagnetic induction coil starts from the starting point A along the While the cutting path is moving, the material is heated in real time with a specific power P ₂ , and the laser cutting head 12 follows it and outputs a coaxial laser beam 171 and cutting gas from the starting point A, according to the preset laser power P ₁ and The preset cutting air pressure Pa cuts the material along the path to be cut to point B. During the process of moving the electromagnetic induction coil 132 and the laser beam 171 from point _A to point B along the cutting path by a specific distance d1, the slit formed At the same time, due to the heat exchange, the metal substrate absorbs enough energy. After the heat diffusion, the temperature of the metal substrate has increased significantly. Compared with the single laser cutting without electromagnetic auxiliary heating, the preheating effect is enhanced. At this time, the molten metal flows The discharge effect is good, and the cutting speed can be appropriately increased while ensuring the cutting quality, starting from point B to perform more efficient cutting at a faster speed.

Method 6: starting point preheating + follow-up heating + variable speed cutting mode, as shown in FIG. 6 , the electromagnetic induction coil 132 stays above the cutting starting point A with a specific power P ₂ and heats for a preset time period t, due to the position of the cutting starting point After the preheating is obtained, it is easier to penetrate the molten metal flow and discharge channel under the action of the laser, and then the electromagnetic induction coil 132 and the laser cutting head 12 move synchronously along the to-be-cutting path according to the preset cutting speed V, and the electromagnetic induction coil 132 moves synchronously along the path to be cut. 132 heats the material in real time with a specific power P ₂ while moving along the cutting path, the laser cutting head 12 starts to output the coaxial laser beam 171 and the cutting gas 141 when it moves above the cutting starting point position A, and from then on according to the preset Assume that the laser power P1 and the preset cutting air pressure Pa are cut to point _B according to the preset cutting speed V, and the electromagnetic induction coil 132 and the laser beam 171 move from point A along the cutting path by _a specific distance d1 to point B during the process , when the slit is formed, the metal substrate absorbs enough energy due to heat exchange, and the temperature of the metal substrate has increased significantly after thermal diffusion. Compared with single laser cutting without electromagnetic auxiliary heating, the preheating effect is enhanced. At this time The molten metal flow and discharge effect is good, and the cutting speed can be appropriately increased while ensuring the cutting quality, starting from point B to perform more efficient cutting at a faster speed.

The electromagnetic-assisted pretreatment laser cutting equipment provided by the present invention adopts the method of electromagnetic induction coil to preheat the thick metal plate to be cut, and integrates the electromagnetic induction coil and the laser beam. It is easier to penetrate the molten metal flow and discharge channel under the action of the laser, and during the laser cutting process, the copper drum is preheated to increase the temperature of the metal substrate to be cut, and the viscous force between the cut surface and the molten metal piece is reduced, which is more conducive to the removal of molten metal from the molten metal. The slits flow and discharge to form a well-shaped cut surface, which improves the cutting quality and efficiency.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (9)

1. a laser cutting equipment of electromagnetic auxiliary pretreatment is characterized in that: The laser cutting equipment includes an input and output device, an integrated industrial computer, a laser generator, an electric motion mechanism of a laser cutting machine tool, a laser cutting head and an electromagnetic induction heating device. The input and output device, the laser generator, the laser cutting The head, the electric motion mechanism of the laser cutting machine tool and the electromagnetic induction heating device are respectively connected to the integrated industrial computer, and the laser cutting head and the electromagnetic induction heating device are respectively connected to the electric motion mechanism of the laser cutting machine tool; The input and output device is used to input various process parameters to the integrated industrial computer, and the integrated industrial computer is used to respectively control the laser generator and the electric motion mechanism of the laser cutting machine according to the received process parameters. , the laser cutting head and the electromagnetic induction heating device; When working, the electromagnetic induction heating device is in front and the laser cutting head is behind. The electromagnetic induction heating device is used to inductively preheat the position of the material to be cut. The laser beam emitted by the laser generator and the cutting gas The coaxial output from the laser cutting head is used to cut the position of the material to be cut. 2 . The laser cutting equipment for electromagnetic-assisted pretreatment according to claim 1 , wherein the laser cutting equipment comprises a water cooling system, and the water cooling system is respectively connected to the laser generator and the laser cutting head. 3 . 3. The laser cutting equipment for electromagnetic-assisted pretreatment according to claim 1, wherein the laser cutting equipment comprises an air compressor and a cutting gas generating device, the air compressor and the cutting gas generating device are respectively connected to the laser cutting head. 4. The laser cutting equipment for electromagnetic-assisted pretreatment according to claim 1, wherein the electromagnetic induction heating device comprises an electromagnetic induction coil clamping mechanism and an electromagnetic induction coil, and the electromagnetic induction coil clamping mechanism is connected to a In the electric motion mechanism of the laser cutting machine, the electromagnetic induction coil is arranged on the electromagnetic induction coil clamping mechanism. 5. The laser cutting equipment of electromagnetic-assisted pretreatment as claimed in claim 4, wherein each process parameter comprises the output power of the laser generator, the motion path and the motion speed of the electric motion mechanism of the laser cutting machine tool , the parameters of the laser cutting head and the parameters of the electromagnetic induction coil. 6. The laser cutting equipment for electromagnetic-assisted pretreatment according to claim 4, wherein the electric motion mechanism of the laser cutting machine is used to drive the laser cutting head and all the laser cutting heads according to the signal communicated by the integrated industrial computer. The electromagnetic induction heating device completes the preset motion trajectory according to the preset speed V. 7 . The laser cutting equipment for electromagnetic-assisted pretreatment according to claim 1 , wherein the cutting gas is an active gas, an inactive gas or an inert gas. 8 . 8. The laser cutting equipment for electromagnetic-assisted pretreatment according to any one of claims 1 to 6, wherein the integrated industrial computer adjusts the nozzle of the laser cutting head in real time through the electric motion mechanism of the laser cutting machine tool The distance between the tip and the surface of the material to be cut is a preset value. 9. The laser cutting equipment for electromagnetic-assisted pretreatment according to any one of claims 1-6, wherein the working modes of the laser cutting equipment include a starting point preheating mode, a follow-up heating method, a starting point preheating+ Follow-up heating method, starting point preheating + variable speed cutting method, follow-up heating + variable speed cutting method, and starting point preheating + follow-up heating + variable speed cutting method.

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