A motor built-in beam for a linear drive device of a laser cutting machine

Abstract

The present invention relates to the field of laser cutting technology, and specifically to a motor-built-in beam of a linear drive device of a laser cutting machine, comprising a beam, both ends of the beam are integrally formed with supporting seats, each supporting seat comprises a motor mounting seat and a supporting plate, the motor mounting seat is integrally formed by a horizontally arranged mounting panel, a plurality of supporting main plates and a plurality of supporting sub-plates, all supporting main plates are provided with four supporting notches, a supporting portion is extended toward the square of the beam from the middle section of the supporting sub-plate, a supporting groove for avoiding a square rod is provided at the bottom of the supporting portion of the supporting sub-plate, a slider is provided at the bottom of the supporting plate just below the supporting notch, the two stepping motors of the present invention and the center line of the beam are on the same horizontal line, so as to avoid the stepping motor from generating torque in the length direction of the beam, reduce the wear of the gear and rack of the stepping motor, and improve the stability of the beam during translation.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, in particular to a motor-built-in crossbeam of a linear drive device of a laser cutting machine. Background Art

[0002] Laser cutting machine is to focus the laser emitted from the laser into a high power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and the workpiece moves, the material is eventually cut, thereby achieving the purpose of cutting.

[0003] The laser head of the laser cutting machine moves horizontally on the beam, and then the linear drive device drives the beam to move in translation, so that the laser head can move in three-dimensional space to meet the required cutting trajectory. However, the two stepper motors of the existing linear drive device are respectively installed at both ends of the beam. The laser head of the laser cutting machine is heavy, so the laser head needs to be installed behind the beam, and the center of gravity of the laser head and the beam needs to be adjusted. Since the existing installation positions of the stepper motors at both ends of the beam are mostly installed at the ends of the beam through cantilever seats, the gears on the stepper motors are meshed with the racks. After the stepper motors are used for a long time, the stepper motors gradually deviate downward under the action of their own center of gravity, causing the gear meshing surface on the output shaft of the stepper motor to deviate downward, increasing the friction between the gears and the racks, increasing the wear on the gears and the racks, and causing errors in the movement of the laser head, resulting in material waste.

[0004] A laser cutting machine and its crossbeam are disclosed with patent number CN201821617151.1. The stepper motor of this solution is installed on one side of the crossbeam, which can solve the problem of gear wear caused by the downward tilt of the stepper motor. However, the installation position of the stepper motor makes it more difficult to adjust the center of gravity of the laser head, the crossbeam and the stepper motor. After long-term use, the laser head gradually tilts downward under the action of its own center of gravity, which will also cause cutting errors. The installation position of the stepper motor generates a torque in the length direction of the crossbeam, which increases the load of the stepper motor and reduces the service life of the stepper motor and the crossbeam. Summary of the invention

[0005] The purpose of the present invention is to provide a motor-mounted beam for a linear drive device of a laser cutting machine to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is:

[0007] A motor-built-in crossbeam for a linear drive device of a laser cutting machine comprises a crossbeam, both ends of the crossbeam are integrally formed with supporting seats, the cross section of the crossbeam in a direction perpendicular to its own length is a square structure, the crossbeam is a hollow structure, each long side of the crossbeam is a square rod, each supporting seat comprises a motor mounting seat and a supporting plate fixed to the bottom of the mounting seat, the motor mounting seat is integrally formed by a horizontally arranged mounting panel, a plurality of supporting main plates and a plurality of supporting sub-plates, the plane where the supporting main plate and the plane where the supporting sub-plate are located are both vertically arranged and perpendicular to each other, the plane where the supporting main plate is located is perpendicular to the length direction of the crossbeam, all supporting main plates are provided with four supporting notches for supporting the ends of the square rods, the middle section of the supporting sub-plate extends a supporting portion toward the square of the crossbeam, the supporting sub-plate is provided with a supporting groove for avoiding the square rod at the bottom of the supporting portion, and a slider is provided at the bottom of the supporting plate directly below the supporting notch.

[0008] Furthermore, the mounting panel is provided with a square hole for avoiding the stepper motor, the mounting panel is fixed on the top of the supporting plate, a rectangular mounting groove is provided in the supporting plate, an adjustment plate for installing the stepper motor is provided in the mounting groove, and a plurality of waist-shaped mounting holes whose length direction is parallel to the length direction of the beam are provided on the edge of the adjusting plate.

[0009] Furthermore, the support plate is provided with a notch on the side of the mounting groove perpendicular to the length direction of the crossbeam, a closed strip is fixedly installed in the notch, an adjusting bolt threadedly installed on the closed strip is threadedly connected to the adjusting plate, a center line of the adjusting bolt is parallel to the length direction of the waist-shaped mounting hole, the adjusting plate is provided with a through hole for avoiding the output shaft of the stepper motor, and the support plate is provided with a waist-shaped through hole for avoiding the output shaft of the stepper motor.

[0010] Furthermore, the area of ​​the mounting groove is larger than the area of ​​the adjustment plate.

[0011] Furthermore, the four square rods of the crossbeam are fixedly connected to each other by a plurality of support rods, the outer sides of the support rods are closed by outer panels, and both ends of the crossbeam are hollow.

[0012] Furthermore, a helical gear is rotatably mounted on the bottom of the supporting plate, and the helical gear is rotatably connected to the supporting plate via a rotating shaft.

[0013] The present invention provides a motor built-in beam of a linear drive device for a laser cutting machine through improvement, which has the following improvements and advantages compared with the prior art:

[0014] First, the two stepper motors and the center line of the beam of the present invention are on the same horizontal line, which prevents the stepper motor from generating torque in the length direction of the beam, reduces the load of the stepper motor, and increases the service life of the stepper motor and the beam.

[0015] Second, the two stepper motors and the crossbeam of the present invention are supported by a supporting plate, which prevents the stepper motor cantilever from gradually tilting downward, reduces the wear of the gear and rack of the stepper motor, and reduces the error of the laser head in the moving position.

[0016] Thirdly, the present invention rotates the bevel gear installed on the supporting plate, thereby improving the stability of the beam during the translation process, reducing the amplitude of the beam, and improving the cutting accuracy of the laser head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further explained below in conjunction with the accompanying drawings and Examples:

[0018] Figure 1 It is a three-dimensional assembly diagram of the present invention and the fuselage;

[0019] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 4 It is a partial three-dimensional assembly schematic diagram of the crossbeam and the supporting seat of the present invention;

[0022] Figure 5 It is a partial top view of the adjustment plate, the supporting seat and the crossbeam of the present invention;

[0023] Figure 6 It is a partial front view of the adjustment plate, the supporting seat and the crossbeam of the present invention;

[0024] Figure 7 The three-dimensional structure diagram of the motor mounting base of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 8 The three-dimensional structure diagram of the motor mounting base of the present invention is shown in FIG. Figure 2 ;

[0026] Fig. 9 The three-dimensional structure of the stepping motor, the supporting plate and the helical gear of the present invention is shown in FIG. Figure 1 ;

[0027] Fig.10 The three-dimensional structure of the stepping motor, the supporting plate and the helical gear of the present invention is shown in FIG. Figure 2 ;

[0028] Fig.11 It is a schematic diagram of the three-dimensional structure of the supporting plate of the present invention;

[0029] Description of reference numerals:

[0030] Body 1, rack 2, slide 3, beam 4, square rod 41, outer panel 42, support rod 43, support seat 5, motor mounting seat 6, mounting panel 61, supporting main board 62, supporting sub-board 63, supporting notch 64, supporting part 65, supporting groove 66, supporting plate 7, slider 71, adjusting plate 72, mounting groove 73, waist-shaped through hole 74, waist-shaped mounting hole 75, closing strip plate 76, adjusting bolt 77, bevel gear 8, stepping motor 9. DETAILED DESCRIPTION

[0031] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides a motor built-in beam of a linear drive device for a laser cutting machine through improvement, such as Figure 1-Figure 11 As shown, it includes a crossbeam 4, and both ends of the crossbeam 4 are integrally formed with a supporting seat 5. The cross section of the crossbeam 4 in the direction perpendicular to its own length is a square structure. The crossbeam 4 is a hollow structure, and each long side of the crossbeam 4 is a square rod 41. Each supporting seat 5 includes a motor mounting seat 6 and a supporting plate 7 fixed to the bottom of the mounting seat. The motor mounting seat 6 is integrally formed by a horizontally arranged mounting panel 61, a plurality of supporting main boards 62 and a plurality of supporting sub-boards 63. The plane where the supporting main board 62 is located is parallel to the supporting plate 7. The planes where the supporting sub-plates 63 are located are all vertically arranged and perpendicular to each other. The plane where the supporting main plate 62 is located is perpendicular to the length direction of the beam 4. All supporting main plates 62 are provided with four supporting notches 64 for supporting the ends of the square rods 41. The middle section of the supporting sub-plate 63 extends a supporting portion 65 toward the beam 4. The supporting sub-plate 63 is provided with a supporting groove 66 for avoiding the square rod 41 at the bottom of the supporting portion 65. The bottom of the supporting plate 7 is provided with a slider 71 directly below the supporting notch 64.

[0033] like Figure 1 As shown, a slideway 3 and a bevel rack 2 are provided on the body 1 of the laser cutting machine, a slider 71 at the bottom of the supporting plate 7 of the crossbeam 4 is slidably matched with the slideway 3, a stepper motor 9 is mounted on the motor mounting seat 6 through a flange seat, and a gear meshing with the bevel rack 2 is provided at the output end of the stepper motor 9, and the gear is a bevel gear.

[0034] The center lines of the two stepper motors 9 and the crossbeam 4 are on the same horizontal line, which prevents the stepper motor 9 from generating torque in the length direction of the crossbeam 4, reduces the load of the stepper motor 9, and increases the service life of the stepper motor 9 and the crossbeam 4.

[0035] The two stepper motors 9 and the crossbeam 4 are supported by the supporting plate 7, and the slider 71 is located directly below the end of the crossbeam 4 and the motor mounting seat 6, so as to avoid the cantilever of the stepper motor 9 from gradually tilting downward, reduce the wear of the gear and rack 2 of the stepper motor 9, and reduce the error of the laser head in the moving position.

[0036] The mounting panel 61 is provided with a square hole for avoiding the stepper motor 9. The mounting panel 61 is fixed on the top of the supporting plate 7. The supporting plate 7 is provided with a mounting groove 73 of a rectangular structure. The mounting groove 73 is provided with an adjustment plate 72 for installing the stepper motor 9. The edge of the adjustment plate 72 is provided with a plurality of waist-shaped mounting holes 75 whose length direction is parallel to the length direction of the beam 4. The stepper motor 9 is installed on the adjustment plate 72, and then the adjustment plate 72 is placed in the mounting groove 73, and then fixed to the supporting plate 7 by bolts passing through the waist-shaped mounting holes 75. By adjusting the position of the adjustment plate 72, the axis of the motor output shaft gradually approaches the rack 2, which facilitates the meshing of the gear and the rack 2.

[0037] The supporting plate 7 is provided with a notch on the side of the mounting groove 73 perpendicular to the length direction of the crossbeam 4, and a closed strip plate 76 is fixedly installed in the notch. The closed strip plate 76 is threadedly installed with an adjusting bolt 77 threadedly connected to the adjusting plate 72, and the center line of the adjusting bolt 77 is parallel to the length direction of the waist-shaped mounting hole 75. The adjusting plate 72 is provided with a through hole for avoiding the output shaft of the stepper motor 9, and the supporting plate 7 is provided with a waist-shaped through hole 74 for avoiding the output shaft of the stepper motor 9. The position of the adjusting plate 72 in the mounting groove 73 can be adjusted by screwing the adjusting bolt 77. After the position is adjusted, tighten the mounting bolt.

[0038] The area of ​​the mounting groove 73 is larger than the area of ​​the adjustment plate 72 , and the mounting groove 73 provides sufficient space for adjusting the position of the adjustment plate 72 .

[0039] The four square rods 41 of the cross beam 4 are fixedly connected to each other by a plurality of support rods 43 . The outer sides of the support rods 43 are closed by outer panels 42 . Both ends of the cross beam 4 are hollowed out to reduce the load of the stepper motor 9 .

[0040] A bevel gear 8 is rotatably installed at the bottom of the supporting plate 7, and the bevel gear 8 is rotatably connected to the supporting plate 7 through a rotating shaft. The bevel gear 8 rotatably installed on the supporting plate 7 improves the stability of the beam 4 during the translation process, reduces the amplitude of the beam 4, and improves the cutting accuracy of the laser head.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor-mounted beam for a linear drive device of a laser cutting machine, characterized in that: The invention comprises a cross beam (4), both ends of which are integrally formed with a supporting seat (5), the cross section of the cross beam (4) in a direction perpendicular to its own length is a square structure, the cross beam (4) is a hollow structure, each long side of the cross beam (4) is a square rod (41), each supporting seat (5) comprises a motor mounting seat (6) and a supporting plate (7) fixed to the bottom of the mounting seat, the motor mounting seat (6) is integrally formed by a horizontally arranged mounting panel (61), a plurality of supporting main plates (62) and a plurality of supporting sub-plates (63), the plane where the supporting main plate (62) is located is parallel to the plane where the supporting sub-plates (63) are located, and the motor mounting seat (6) is integrally formed by a horizontally arranged mounting panel (61), a plurality of supporting main plates (62) and a plurality of supporting sub-plates (63). The planes where the plates (63) are located are all vertically arranged and perpendicular to each other. The plane where the supporting main plate (62) is located is perpendicular to the length direction of the cross beam (4). All supporting main plates (62) are provided with four supporting notches (64) for supporting the ends of the square rods (41). The middle section of the supporting sub-plate (63) extends a supporting portion (65) toward the cross beam (4). The supporting sub-plate (63) is provided with a supporting groove (66) for avoiding the square rod (41) at the bottom of the supporting portion (65). The bottom of the supporting plate (7) is provided with a slider (71) directly below the supporting notch (64).

2. The motor built-in beam of the linear drive device of a laser cutting machine according to claim 1, characterized in that: The mounting panel (61) is provided with a square hole for avoiding the stepping motor (9); the mounting panel (61) is fixed on the top of the supporting plate (7); a mounting groove (73) of a rectangular structure is provided in the supporting plate (7); an adjustment plate (72) for installing the stepping motor (9) is provided in the mounting groove (73); and a plurality of waist-shaped mounting holes (75) are provided on the edge of the adjustment plate (72) whose length direction is parallel to the length direction of the crossbeam (4).

3. The motor-mounted beam of the linear drive device of a laser cutting machine according to claim 2, characterized in that: The supporting plate (7) is provided with a notch on the side of the mounting groove (73) perpendicular to the length direction of the crossbeam (4), a closing strip plate (76) is fixedly installed in the notch, an adjusting bolt (77) threadedly installed on the closing strip plate (76) and threadedly connected to the adjusting plate (72), a center line of the adjusting bolt (77) is parallel to the length direction of the waist-shaped mounting hole (75), the adjusting plate (72) is provided with a through hole for avoiding the output shaft of the stepping motor (9), and the supporting plate (7) is provided with a waist-shaped through hole (74) for avoiding the output shaft of the stepping motor (9).

4. The motor built-in beam of the linear drive device of a laser cutting machine according to claim 2, characterized in that: The area of ​​the mounting groove (73) is larger than the area of ​​the adjustment plate (72).

5. The motor built-in beam of the linear drive device of a laser cutting machine according to claim 1, characterized in that: The four square rods (41) of the cross beam (4) are fixedly connected to each other by a plurality of support rods (43), the outer sides of the support rods (43) are closed by outer panels (42), and both ends of the cross beam (4) are in a hollow state.

6. The motor built-in beam of the linear drive device of a laser cutting machine according to claim 1, characterized in that: A bevel gear (8) is rotatably mounted on the bottom of the supporting plate (7), and the bevel gear (8) is rotatably connected to the supporting plate (7) via a rotating shaft.

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