Cross beam driving device of high-precision plasma cutting machine

Abstract

The invention discloses a cross beam driving device of a high-precision plasma cutting machine, and relates to the technical field of plasma cutting equipment, the cross beam driving device comprises a machine tool and a cross beam main body slidably arranged on the machine tool, guide rails are fixedly arranged on the two sides of the machine tool, and magnetic suspension modules are arranged between the cross beam main body and the two guide rails; a guide structure used for guiding the beam body to move in the length direction of the guide rail is arranged on the guide rail, and a driving device used for driving the beam body to slide is arranged on the machine tool. The plasma cutting machine has the advantages that high-precision cutting operation of the plasma cutting machine can be considered, meanwhile, the plasma cutting machine can efficiently move to the position needing to be cut, and then the working efficiency of the plasma cutting machine is improved.

Description

Technical Field

[0001] The present application relates to the technical field of plasma cutting equipment, and in particular to a beam driving device of a high-precision plasma cutting machine. Background Art

[0002] Plasma cutting machines are widely used in the metal processing industry. With their high efficiency and precision, they play an important role in industrial production. As the manufacturing industry's requirements for processing accuracy and production efficiency continue to increase, the design and technology of plasma cutting machines are also constantly improving. Among them, the beam drive device is one of the key components to ensure cutting quality and efficiency.

[0003] At present, existing plasma cutting machines usually use stepper motors or servo motors as the driving device of the beam, and realize the movement of the beam through screw or belt transmission. Although these traditional driving methods meet the basic cutting needs to a certain extent, the friction between the beam and the machine tool will cause increased wear due to frequent reciprocating motion during long-term use, which will affect the cutting accuracy and equipment life. In addition, the moving speed of the beam on the machine tool is limited by the screw transmission method, and the plasma cutting machine cannot efficiently move to the position where cutting is required, resulting in low work efficiency. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a beam driving device for a high-precision plasma cutting machine.

[0005] The present application provides a beam driving device for a high-precision plasma cutting machine, which adopts the following technical solution: A beam driving device for a high-precision plasma cutting machine comprises a machine tool and a beam body slidably arranged on the machine tool, guide rails are fixedly arranged on both sides of the machine tool, a magnetic suspension module is arranged between the beam body and the two guide rails, and a guide structure is arranged on the guide rail for guiding the beam body to move along the length direction of the guide rail, and a driving device is arranged on the machine tool for driving the beam body to slide.

[0006] Optionally, the magnetic levitation module includes a permanent magnet, an electromagnet and an electronic control system, a plurality of the permanent magnets are arranged on the two guide rails, the permanent magnets on the same guide rail are distributed along the length direction of the corresponding guide rail, electromagnets are fixedly arranged on both sides of the machine tool, and the electromagnets correspond to the permanent magnets on the guide rail on the same side, and each electromagnet is electrically connected to the electronic control system.

[0007] Optionally, a speed sensor is provided on the beam body, and the speed sensor is used to detect the moving speed of the beam body. The speed sensor is electrically connected to an electronic control system, and the electronic control system controls the current of the electromagnet based on a speed signal detected by the speed sensor.

[0008] Optionally, the guide structure includes baffles installed on both sides of the guide rail, the length directions of the two baffles on the same guide rail are parallel, sliders are fixedly provided on both sides of the beam body, the sliders correspond to the guide rails one by one, and the sliders are slidably provided between the two baffles on the corresponding guide rails.

[0009] Optionally, the ends of the two baffles located on the same guide rail that are close to each other are both provided with elastic abutment plates, and the elastic abutment plates abut against the sliding block.

[0010] Optionally, the baffle is slidably disposed on the guide rail, an adjusting bolt is rotatably disposed on the baffle, and the adjusting bolt is threadably engaged with the guide rail.

[0011] Optionally, a mounting groove is provided at the top end of the guide rail, a top support rod is slidably arranged in the mounting groove along a vertical direction, the top support rod is used to abut against a sliding block, a servo cylinder is provided on the machine tool for driving the top support rod to slide, and the servo cylinder is electrically connected to the electronic control system.

[0012] Optionally, the driving device includes a linear motor, a guide rod is fixedly provided on the machine tool, a driving block is slidably provided on the guide rod, a contact plate is fixedly provided on the crossbeam body, a clamping assembly is provided on the driving block for driving the contact plate to press against the driving block, the linear motor is used to drive the driving block to slide, and the linear motor is electrically connected to the electronic control system.

[0013] Optionally, the clamping assembly includes a limit plate and an elastic member, the limit plate is slidably sleeved on the guide rod, the contact plate is arranged between the limit plate and the driving block, and the elastic member is used to drive the limit plate to slide toward the driving block.

[0014] Optionally, a plurality of spherical protrusions are fixedly provided on the ends of the driving block and the limiting plate that are close to each other.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application can effectively reduce the friction between the crossbeam body and the machine tool by setting a magnetic levitation module between the crossbeam body and the two guide rails, avoid wear between the crossbeam body and the machine tool, and extend the service life of the equipment; at the same time, in conjunction with the setting of the guide structure, it ensures the high-precision movement of the crossbeam body on the machine tool, so that the plasma cutting machine can perform high-precision cutting operations; and when working, the crossbeam body is suspended on the machine tool through the magnetic levitation module, so that the plasma cutting machine can efficiently move to the position where cutting is required, thereby improving the working efficiency of the plasma cutting machine.

[0016] 2. The present application sets a speed sensor on the beam body, monitors the speed of the beam body in real time during movement, and dynamically adjusts the current of the electromagnet through the electronic control system, so that the distance between the beam body and the guide rail remains consistent during movement, thereby ensuring the smooth operation of the beam body, reducing the cutting error caused by speed fluctuation, and improving the cutting accuracy; at the same time, this adaptive current control method can also extend the service life of the electromagnet and reduce maintenance costs.

[0017] 3. The present application ensures that the beam body always maintains linear motion when moving by arranging baffles on both sides of the guide rail. Furthermore, elastic abutment plates are arranged on the end surfaces of the two baffles that are close to each other, and the elastic abutment plates abut against the slider. When the beam body moves along the guide rail, the rigid collision between the slider and the baffle can be reduced, thereby reducing noise and wear, extending service life, and improving the operating stability and accuracy of the beam body.

[0018] 4. After the beam body moves to the cutting position with the plasma cutter, the electric control suction system controls the top support rod to slide upward and abut against the slider to support the beam body, ensuring the stability of the plasma cutter during the cutting process, thereby ensuring the cutting accuracy. When the equipment is shut down, the beam body is first supported by the top support rod, and then the beam body is slowly lowered to the two guide rails to prevent the beam body from falling due to gravity and colliding with the guide rails after the electromagnet is powered off.

[0019] 5. The drive device uses a linear motor to achieve fast and precise movement of the beam body, significantly improving the working efficiency and cutting accuracy of the plasma cutting machine. The use of a linear motor not only eliminates the error accumulation caused by traditional mechanical transmission, but also greatly reduces the complexity and maintenance cost of the transmission mechanism. Furthermore, considering that the beam body relies on magnetic suspension to be suspended above the machine tool, when the equipment is shut down, the beam body will fall onto the guide rail due to gravity. Therefore, the contact plate on the beam body is pressed onto the drive block through a clamping assembly, thereby achieving fast and precise drive of the beam body without affecting the relative movement between the beam body and the drive block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a cross-sectional view of the overall structure of an embodiment of the present application; Figure 3 yes Figure 2 A magnified view of part A; Figure 4 It is a partial structural diagram of an embodiment of the present application, used to express the connection relationship between the linear motor and the beam body.

[0021] Explanation of the accompanying drawings: 1. Machine tool; 11. Servo cylinder; 12. Guide rod; 2. Crossbeam body; 21. Slider; 22. Contact plate; 3. Guide rail; 31. Speed ​​sensor; 32. Baffle; 321. Elastic abutment plate; 322. Adjusting bolt; 33. Mounting groove; 34. Top support rod; 4. Magnetic levitation module; 41. Permanent magnet; 42. Electromagnet; 43. Electronic control system; 44. Control panel; 5. Linear motor; 6. Drive block; 61. Limit plate; 62. Elastic member; 63. Connecting rod; 631. End plate; 64. Spherical bump. DETAILED DESCRIPTION

[0022] The following will be combined with the attached Figure 1 -Attached Figure 4 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0023] The inventor of this application has found that in the long-term use of the existing plasma cutting machine, the friction between the beam and the machine tool will cause increased wear, thereby affecting the cutting accuracy and equipment life. In addition, the moving speed of the beam on the machine tool is limited by the screw drive, and the plasma cutting machine cannot efficiently move to the position where cutting is required, resulting in low work efficiency. To this end, this application discloses a beam drive device for a high-precision plasma cutting machine, which mainly adopts the following scheme: The embodiment of the present application discloses a beam driving device for a high-precision plasma cutting machine. Figure 1 , including a machine tool 1 and a beam body 2 slidably arranged on the machine tool 1, the plasma cutting machine is used on the beam body 2, guide rails 3 are fixedly arranged on both sides of the machine tool 1, magnetic levitation modules 4 are arranged between the beam body 2 and the two guide rails 3, and a driving device for driving the beam body 2 to slide is arranged on the machine tool 1.

[0024] Reference Figure 1 and Figure 2The magnetic suspension module 4 includes a permanent magnet 41, an electromagnet 42 and an electric control system 43. Multiple permanent magnets 41 are arranged on both guide rails 3. Each permanent magnet 41 on the same guide rail 3 is distributed along the length direction of the corresponding guide rail 3. Electromagnets 42 are fixedly arranged on both sides of the machine tool 1, and the electromagnets 42 correspond to each permanent magnet 41 on the guide rail 3 on the same side. The electric control system 43 is installed on the machine tool 1, and the electric control system 43 is electrically connected to a control panel 44, and each electromagnet 42 is electrically connected to the electric control system 43. Specifically, the permanent magnet 41 can be a neodymium iron boron permanent magnet 41 or a samarium cobalt permanent magnet 41. These two types of permanent magnets 41 have a high magnetic energy product and good temperature stability, and are suitable for long-term use in a high temperature environment. The electromagnet 42 selects a high-performance coil winding, and the electronic control system 43 is responsible for controlling the current of the electromagnet 42. The magnetic field strength of the electromagnet 42 can be adjusted according to actual needs, so as to achieve precise suspension and movement of the beam body 2. In addition, the electromagnet 42 can also use a ferrite electromagnet 42 or an aluminum nickel cobalt electromagnet 42. These two types of electromagnets 42 have good magnetic field strength and response speed.

[0025] Reference Figure 2 and Figure 3 The beam body 2 is provided with a speed sensor 31, which is used to detect the moving speed of the beam body 2. The speed sensor 31 is electrically connected to the electric control system 43, and the electric control system 43 controls the current of the electromagnet 42 based on the speed signal detected by the speed sensor 31. The speed sensor 31 uses a photoelectric encoder or a Hall effect sensor, which can monitor the moving speed of the beam body 2 in real time and transmit the data to the electric control system 43. The electric control system 43 dynamically adjusts the current of the electromagnet 42 according to the speed signal, so that the distance between the beam body 2 and the guide rail 3 is always consistent during the movement, thereby ensuring the smooth operation of the beam body 2, reducing the cutting error caused by speed fluctuations, and improving the cutting accuracy.

[0026] Reference Figure 3 In order to control the moving direction of the beam body 2 on the guide rail 3 and make the beam body 2 move along the length direction of the guide rail 3, a guide structure is provided on the guide rail 3. Specifically, the guide structure includes baffles 32 installed on both sides of the guide rail 3. The length directions of the two baffles 32 located on the same guide rail 3 are parallel. Slide blocks 21 are fixedly provided on both sides of the beam body 2. The slide blocks 21 correspond to the guide rails 3 one by one, and the slide blocks 21 are slidably provided between the two baffles 32 on the corresponding guide rails 3. The baffles 32 are made of high-strength aluminum alloy material, and the slide blocks 21 are made of copper alloy material, and the surface is chrome-plated.

[0027] Reference Figure 3The two baffles 32 located on the same guide rail 3 are each provided with an elastic abutment plate 321 at one end close to each other. The elastic abutment plate 321 abuts against the slider 21. The elastic abutment plate 321 is made of rubber or polyurethane material, has good elasticity and buffering performance, can effectively absorb the impact force between the slider 21 and the baffle 32, reduce noise and wear, extend service life, and at the same time improve the operation stability and accuracy of the beam body 2.

[0028] Reference Figure 3 In order to further ensure that the beam body 2 runs smoothly on the guide rail 3 and always maintains linear motion, the baffle 32 is slidably set on the guide rail 3. Specifically, an adjusting bolt 322 is rotatably set on the baffle 32, and the adjusting bolt 322 is threadedly matched with the guide rail 3. By rotating the adjusting bolt 322, the position of the baffle 32 can be fine-tuned, thereby adjusting the gap between the baffle 32 and the slider 21, ensuring that the beam body 2 always maintains linear motion when moving, and further improving the cutting accuracy.

[0029] Reference Figure 2 and Figure 3 The top of the guide rail 3 is also provided with a mounting groove 33, in which a top support rod 34 is slidably arranged in the vertical direction. A servo cylinder 11 is fixedly arranged on the machine tool 1, and the piston rod of the servo cylinder 11 is fixedly connected to the top support rod 34 and is used to drive the top support rod 34 to slide. The servo cylinder 11 is electrically connected to the electronic control system 43; the top support rod 34 can be made of high-strength alloy steel or aluminum alloy material, which has good mechanical strength and lightweight characteristics and is suitable for high-speed movement. The servo cylinder 11 can be an electric cylinder or a hydraulic cylinder, which has high precision and high response speed and can quickly respond to the instructions of the electronic control system 43 in a short time. When the beam body 2 moves to the cutting position with the plasma cutting machine, the servo cylinder 11 is controlled by the electronic control system 43 to move, and the top support rod 34 slides upward and abuts against the slider 21 to support the beam body 2, ensuring the stability of the plasma cutting machine during the cutting process, thereby ensuring the cutting accuracy. When the equipment is shut down, the crossbeam body 2 is first supported by the top support rod 34, and then the crossbeam body 2 is slowly lowered onto the two guide rails 3 to prevent the crossbeam body 2 from falling due to gravity and colliding with the guide rails 3 after the electromagnet 42 is powered off.

[0030] Reference Figure 3 and Figure 4, considering that the crossbeam body 2 is suspended on the machine tool 1 by magnetic suspension, when the equipment is stopped, the crossbeam body 2 will fall onto the guide rail 3 due to gravity, so the drive device is optimized. Specifically, the drive device includes a linear motor 5, a guide rod 12 is fixedly provided on the machine tool 1, the length direction of the guide rod 12 is parallel to the length direction of the two guide rails 3, a driving block 6 is slidably provided on the guide rod 12, the linear motor 5 is installed on the machine tool 1, and is used to drive the driving block 6 to slide, and the linear motor 5 is electrically connected to the electric control system 43. The guide rod 12 can be made of stainless steel or aluminum alloy. These two materials have good wear resistance and corrosion resistance and are suitable for long-term use. The drive block 6 can be made of high-strength alloy steel or aluminum alloy. These two materials have good mechanical strength and lightweight characteristics and are suitable for high-speed movement. A contact plate 22 is fixedly arranged on the beam body 2, and a clamping assembly for driving the contact plate 22 to press against the drive block 6 is arranged on the drive block 6. The contact plate 22 can be made of polyoxymethylene (POM) or polytetrafluoroethylene (PTFE). These two materials have a low friction coefficient and good self-lubricating properties, and can reduce friction losses during high-speed movement.

[0031] The use of the linear motor 5 realizes the rapid and precise movement of the beam body 2, significantly improving the working efficiency and cutting accuracy of the plasma cutting machine. The use of the linear motor 5 not only eliminates the error accumulation caused by the traditional mechanical transmission, but also greatly reduces the complexity and maintenance cost of the transmission mechanism. Furthermore, the contact plate 22 on the beam body 2 is pressed against the drive block 6 through a clamping assembly, thereby realizing rapid and precise driving of the movement of the beam body 2 without affecting the relative movement between the beam body 2 and the drive block 6.

[0032] Reference Figure 4 The clamping assembly includes a limit plate 61 and an elastic member 62. The limit plate 61 is slidably sleeved on the guide rod 12. A connecting rod 63 is fixedly provided on the driving block 6. The connecting rod 63 is slidably penetrated on the limit plate 61, and an end plate 631 is fixedly provided on the end of the connecting rod 63 away from the driving block 6. The contact plate 22 is arranged between the limit plate 61 and the driving block 6. The elastic member 62 includes a compression spring, which is sleeved on the connecting rod 63, and the two ends of the compression spring are respectively in contact with the limit plate 61 and the end plate 631, which is used to drive the limit plate 61 to slide in the direction close to the driving block 6, so that the contact plate 22 is pressed against the driving block 6. A plurality of spherical convex points 64 are fixedly provided on the ends of the driving block 6 and the limit plate 61 that are close to each other. The setting of the spherical convex points 64 can reduce the friction between the contact plate 22 and the driving block 6 or the limit plate 61, and avoid wear of the contact plate 22, the driving block 6 and the limit plate 61.

[0033] The implementation principle of the beam driving device of a high-precision plasma cutting machine in the embodiment of the present application is as follows: by arranging a magnetic suspension module 4 between the beam body 2 and the two guide rails 3, the friction between the beam body 2 and the machine tool 1 can be effectively reduced, and wear between the beam body 2 and the machine tool 1 can be avoided, thereby extending the service life of the equipment; at the same time, in conjunction with the setting of the guide structure, it is ensured that the beam body 2 can move on the machine tool 1 along the length direction of the guide rail 3 with high precision, so that the plasma cutting machine can perform high-precision cutting operations; and when working, the beam body 2 is suspended on the machine tool 1 by the magnetic suspension module 4, and then the linear motor 5 is used to realize the rapid and precise movement of the beam body 2, so that the plasma cutting machine can efficiently move to the position where cutting is required, thereby improving the working efficiency of the plasma cutting machine.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A beam driving device for a high-precision plasma cutting machine, characterized in that: The invention comprises a machine tool (1) and a crossbeam body (2) slidably arranged on the machine tool (1), guide rails (3) being fixedly arranged on both sides of the machine tool (1), a magnetic suspension module (4) being arranged between the crossbeam body (2) and the two guide rails (3), and a guide structure for guiding the crossbeam body (2) to move along the length direction of the guide rails (3) being arranged on the guide rails (3), and a driving device for driving the crossbeam body (2) to slide being arranged on the machine tool (1).

2. The crossbeam driving device of a high-precision plasma cutting machine according to claim 1, characterized in that: The magnetic suspension module (4) comprises a permanent magnet (41), an electromagnet (42) and an electric control system (43); a plurality of the permanent magnets (41) are arranged on both guide rails (3); the permanent magnets (41) located on the same guide rail (3) are distributed along the length direction of the corresponding guide rail (3); electromagnets (42) are fixedly arranged on both sides of the machine tool (1); the electromagnets (42) correspond to the permanent magnets (41) on the guide rail (3) located on the same side; and the electromagnets (42) are electrically connected to the electric control system (43).

3. The crossbeam driving device of a high-precision plasma cutting machine according to claim 2, characterized in that: A speed sensor (31) is provided on the crossbeam body (2), and the speed sensor (31) is used to detect the moving speed of the crossbeam body (2). The speed sensor (31) is electrically connected to an electric control system (43), and the electric control system (43) controls the current of the electromagnet (42) based on a speed signal detected by the speed sensor (31).

4. The crossbeam driving device of a high-precision plasma cutting machine according to claim 1, characterized in that: The guide structure comprises baffles (32) mounted on both sides of the guide rail (3), the length directions of the two baffles (32) located on the same guide rail (3) are parallel, and sliders (21) are fixedly arranged on both sides of the crossbeam body (2), the sliders (21) correspond to the guide rails (3) one by one, and the sliders (21) are slidably arranged between the two baffles (32) on the corresponding guide rails (3).

5. The crossbeam driving device of a high-precision plasma cutting machine according to claim 4, characterized in that: The two baffles (32) located on the same guide rail (3) are both provided with elastic abutment plates (321) at their ends close to each other, and the elastic abutment plates (321) abut against the sliding block (21).

6. The crossbeam driving device of a high-precision plasma cutting machine according to claim 5, characterized in that: The baffle plate (32) is slidably arranged on the guide rail (3); an adjusting bolt (322) is rotatably arranged on the baffle plate (32); and the adjusting bolt (322) is threadably matched with the guide rail (3).

7. The crossbeam driving device of a high-precision plasma cutting machine according to claim 2, characterized in that: The top end of the guide rail (3) is provided with a mounting groove (33), a supporting rod (34) is slidably arranged in the vertical direction in the mounting groove (33), the supporting rod (34) is used to abut against the slide block (21), and a servo cylinder (11) is provided on the machine tool (1) for driving the supporting rod (34) to slide, and the servo cylinder (11) is electrically connected to the electric control system (43).

8. The crossbeam driving device of a high-precision plasma cutting machine according to claim 2, characterized in that: The driving device comprises a linear motor (5), a guide rod (12) is fixedly arranged on the machine tool (1), a driving block (6) is slidably arranged on the guide rod (12), a contact plate (22) is fixedly arranged on the crossbeam body (2), a clamping assembly for driving the contact plate (22) to press against the driving block (6) is arranged on the driving block (6), the linear motor (5) is used to drive the driving block (6) to slide, and the linear motor (5) is electrically connected to an electric control system (43).

9. The crossbeam driving device of a high-precision plasma cutting machine according to claim 8, characterized in that: The clamping assembly comprises a limit plate (61) and an elastic member (62); the limit plate (61) is slidably sleeved on the guide rod (12); the contact plate (22) is arranged between the limit plate (61) and the driving block (6); and the elastic member (62) is used to drive the limit plate (61) to slide in a direction close to the driving block (6).

10. The crossbeam driving device of a high-precision plasma cutting machine according to claim 9, characterized in that: A plurality of spherical convex points (64) are fixedly arranged on the ends of the driving block (6) and the limiting plate (61) that are close to each other.

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