Machine tool cross beam

Abstract

The utility model discloses a machine tool cross beam, which relates to the technical field of laser cutting and comprises a cross beam body, motor accommodating cavities are arranged in two ends of the cross beam body, and a through hole for a motor shaft to pass through is arranged at the bottom of the cross beam body corresponding to the motor accommodating cavities; connecting parts of a sliding mechanism used for being in sliding connection with a machine tool sliding rail are fixedly arranged below the two ends of the beam body. The motor containing cavities are formed in the two ends of the cross beam body and used for installing the corresponding motors, stress is more uniform, the overall strength is higher, and high-speed stable operation can be supported; the motor is located above the sliding structure of the cross beam body, so that the situation that the cross beam body drives the motor to generate position deviation is reduced, the cross beam body can obtain the optimal force bearing point, and therefore the load of the motor is reduced; the arrangement of the motor accommodating cavity can also form an external protection structure for the installed motor, so that the motor is protected from external collision.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a machine tool crossbeam. 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 laterally on the beam, and then the linear drive device drives the beam to move in translation, so that the laser head moves 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 the front end of the travel direction of the beam, which seriously compresses the effective use stroke; and because the beam carries other equipment that needs to be moved, including the laser head, the existing method of setting a stepper motor at the front end, after running for a long time, the stepper motor gradually deviates downward due to the deformation driven by its own center of gravity and the beam, causing the gear meshing surface on the output shaft of the stepper motor to deviate downward, thereby increasing the friction between the gear and the rack, increasing the wear on the gear and the rack, greatly increasing the load on the motor, and causing errors in the movement of the laser head. Utility Model Content

[0004] The purpose of the utility model is to provide a machine tool crossbeam to solve the problems existing in the above-mentioned prior art, reasonably set the motor layout position, ensure the effective use of the stroke, and reduce the load of the motor.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a machine tool crossbeam, including a crossbeam body, wherein motor accommodating cavities are arranged inside both ends of the crossbeam body, and through holes for the motor shaft to pass through are opened at the bottom of the crossbeam body corresponding to the motor accommodating cavity; connecting parts of a sliding mechanism for sliding connection with a machine tool slide rail are fixedly arranged below both ends of the crossbeam body.

[0007] Preferably, both ends of the beam body are respectively provided with placement holes communicating with the corresponding motor accommodating cavity, and at least one side wall of the end of the beam body is provided with a communication hole communicating with the corresponding motor accommodating cavity.

[0008] Preferably, the interior of the crossbeam body has a penetrating hollow cavity along its length extension direction, and internal ribs are fixed in the hollow cavity.

[0009] Preferably, the beam body is integrally formed.

[0010] Preferably, the crossbeam body is made of HT300 grey cast iron.

[0011] Preferably, the bottoms of both ends of the beam body are provided with mounting seats, the bottoms of the mounting seats are lower than the bottom of the beam body, and the bottoms of the mounting seats are provided with the through holes and the connecting portions.

[0012] Preferably, arched connecting ribs are fixedly provided on both sides of the bottom of the beam body along the traveling direction, and the ends of each arched connecting rib are respectively fixedly connected to the corresponding mounting seat; a plurality of reinforcing ribs are fixedly provided between two of the arched connecting ribs, and each of the reinforcing ribs is respectively fixedly connected to the bottom of the beam body.

[0013] Preferably, a plurality of weight-reducing holes are provided on the circumferential side walls of the beam body, and each of the weight-reducing holes is connected to the hollow cavity.

[0014] Preferably, each of the mounting seats, each of the arched connecting ribs and each of the reinforcing ribs are integrally formed with the beam body.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The machine tool crossbeam provided by the utility model is used to install the corresponding motor by arranging motor accommodating cavities inside the two ends of the crossbeam body, so that the force is more evenly distributed and the overall strength is stronger, so it can support high-speed and stable operation; and the motor is located above the sliding structure of the crossbeam body, which reduces the situation where the motor is deformed and causes the motor to produce positional deviation, reduces the extrusion between the output gear of the motor and the corresponding rack, reduces the motor load, and enables the crossbeam body to obtain the best force point; the setting of the motor accommodating cavity can also form an external protective structure for the installed motor to protect it from external collisions.

[0017] Furthermore, the arrangement of the placement holes can facilitate the assembly and disassembly of the motor in the motor accommodating cavity, and the arrangement of the connecting holes can also provide a wider installation space for the connection position of the motor in the motor accommodating cavity, thereby improving installation convenience.

[0018] Furthermore, the hollow cavity setting of the beam body can reduce the weight of the beam body, improve flexibility, and reduce manufacturing consumables; the internal ribs arranged inside can ensure its overall rigidity while reducing the weight of the beam body, ensuring safe use.

[0019] Furthermore, the beam body is manufactured in an integrated manner, and has high overall rigidity and strength. Compared with the existing beams welded from multiple plate steel structures, it will not have problems such as insufficient rigidity and vibration under high-speed operation, thereby ensuring cutting accuracy and high-speed and stable operation.

[0020] Furthermore, the crossbeam body is made of HT300 grey cast iron, which has high strength and good wear resistance, and can ensure the overall support strength and extend the service life.

[0021] Furthermore, the mounting seats provided at the bottom of both ends of the beam body can enhance the overall strength of the ends, ensuring a smoother reciprocating movement in the direction of travel.

[0022] Furthermore, the arched connecting ribs can increase the bearing strength of the beam body, and the reinforcing ribs arranged at the bottom can further enhance its overall strength, ensuring that it has good bearing capacity and improving the stable and smooth operation of the carried components.

[0023] Furthermore, the provision of the weight-reducing holes can reduce the weight of the crossbeam body itself and increase the lightweight degree of the component.

[0024] Furthermore, the mounting seat, arched connecting ribs and reinforcing ribs are all integrally formed with the crossbeam body, which can ensure the overall strength of the crossbeam body, provide a more stable and reliable load-bearing capacity and a high-speed and stable operation effect on the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the overall structure of the machine tool crossbeam provided by the utility model;

[0027] Figure 2 Another structural schematic diagram of the machine tool crossbeam provided by the utility model from another perspective;

[0028] Figure 3 A schematic diagram of the structure of the motor installed on the machine tool crossbeam provided by the utility model;

[0029] Figure 4 The utility model is a schematic diagram of installing the machine tool crossbeam on the machine tool.

[0030] In the figure:

[0031] 100-machine tool beam;

[0032] 1- beam body; 11- motor accommodating cavity; 12- placement hole; 13- communication hole; 14- weight reduction hole;

[0033] 2-mounting seat; 21-perforation; 22-connecting part;

[0034] 3-Arched connecting ribs;

[0035] 4-Reinforcement rib plate;

[0036] 5-Driven gear. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] The utility model aims to provide a machine tool crossbeam to solve the problems existing in the prior art, reasonably set the motor layout position, ensure the effective use of the stroke, and reduce the load of the motor.

[0039] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] Embodiment 1

[0041] This embodiment provides a machine tool beam 100, which is mainly but not limited to use on a laser cutting machine. Figure 1 to Figure 4 As shown, it includes a beam body 1, and a motor accommodating cavity 11 is arranged inside both ends of the beam body 1, and a through hole 21 for the motor shaft to pass through is opened at the bottom of the beam body 1 corresponding to the motor accommodating cavity 11; a connecting part 22 of a sliding mechanism for slidingly connecting with the machine tool slide rail is fixedly arranged below both ends of the beam body 1. By arranging the motor accommodating cavity 11 inside both ends of the beam body 1, the corresponding motor is installed, the force is more uniform, and the overall strength is stronger, which can support high-speed and stable operation; and the motor is located above the sliding structure of the beam body 1, which reduces the situation that the deformation of the beam body 1 itself drives the motor to produce position deviation, reduces the extrusion between the output gear of the motor and the corresponding rack, and reduces the load of the motor; it can enable the beam body 1 to obtain the best force point; the setting of the motor accommodating cavity 11 can also form an external protective structure for the installed motor to protect it from external bumps.

[0042] Specifically, the beam body 1 may also be provided with a mounting structure, such as a mounting hole, of a driven tooth that is synchronously meshed with a rack that matches the gear output by the motor according to actual needs.

[0043] Specifically, an X-axis motor is installed in the motor accommodating cavity 11 , and an X-axis guide pair is installed at the connecting portion 22 below the two ends of the beam body 1 .

[0044] Among them, for the structure of the beam body 1:

[0045] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, the interior of the beam body 1 has a hollow cavity extending along its length, and an internal rib is fixed in the hollow cavity. The hollow cavity of the beam body 1 can reduce the weight of the beam body 1, improve flexibility, and reduce manufacturing consumables; the internal rib can ensure the overall rigidity of the beam body 1 while reducing its weight, ensuring safe use.

[0046] In the optional scheme of this embodiment, it is more preferred that the crossbeam body 1 is integrally formed. The crossbeam body 1 is made in an integrally formed manner, and its overall rigidity is large and its strength is high. Compared with the existing crossbeams welded with multiple plate steel structures, there will be no problems such as insufficient rigidity and vibration under high-speed operation, thereby ensuring cutting accuracy and high-speed and stable operation.

[0047] Specifically, the beam body 1 is made by sand casting process.

[0048] In the optional scheme of this embodiment, it is more preferred that the material of the beam body 1 is HT300 gray cast iron. The beam body 1 is made of HT300 gray cast iron, which has high strength and good wear resistance, can ensure the overall support strength and extend the service life.

[0049] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, both sides of the bottom of the crossbeam body 1 along the traveling direction are fixedly provided with arched connecting ribs 3, and the ends of each arched connecting rib 3 are respectively fixedly connected to the corresponding mounting seat 2; a plurality of reinforcing ribs 4 are fixedly provided between the two arched connecting ribs 3, and each reinforcing rib 4 is respectively fixedly connected to the bottom of the crossbeam body 1. The arched connecting ribs 3 can increase the bearing strength of the crossbeam body 1, and the reinforcing ribs 4 arranged at the bottom can further enhance its overall strength, ensure that it has good bearing capacity, and improve the stability and smoothness of the components carried.

[0050] Among them, for the structure for motor installation on the beam body 1:

[0051] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 3As shown, both ends of the beam body 1 are provided with placement holes 12 communicating with the corresponding motor accommodating cavity 11, and at least one side wall of the end of the beam body 1 is provided with a communication hole 13 communicating with the corresponding motor accommodating cavity 11. The arrangement of the placement holes 12 can facilitate the disassembly and assembly of the motor in the motor accommodating cavity 11, and the arrangement of the communication holes 13 can also facilitate the connection position of the motor in the motor accommodating cavity 11 to provide a wider installation space, thereby improving the convenience of installation.

[0052] Specifically, in order to ensure that the motor can be smoothly installed in the motor accommodating cavity 11 while reducing the size of the beam body 1, it can be arranged that in the installed state, the motor is installed and disassembled by being placed into the motor accommodating cavity 11 through the connecting hole 13 opened on the upper side wall of the end of the beam body 1. The operator provides an operating space for installing fasteners, etc. through the connecting holes 13 on both sides of the end of the beam body 1 along its travel direction and the placement holes 12 opened on the outer side of the end. At this time, the height of the beam body 1 can be made to be flush with the height of the installed motor, thereby reducing the size of the beam body 1.

[0053] Among them, for the sliding connection structure between the beam body 1 and the machine tool slide rail:

[0054] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, the bottom of both ends of the beam body 1 has a mounting seat 2, the bottom of the mounting seat 2 is lower than the bottom of the beam body 1, and the bottom of the mounting seat 2 has a through hole 21 and a connecting portion 22. The mounting seats 2 provided at the bottom of both ends of the beam body 1 can enhance the overall strength of the end, ensuring a more stable reciprocating movement in the traveling direction.

[0055] In order to improve the lightweight design of the beam body 1:

[0056] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, a plurality of weight-reducing holes 14 are provided on the circumferential side walls of the beam body 1, and each weight-reducing hole 14 is connected to the hollow cavity. The provision of the weight-reducing holes 14 can reduce the weight of the beam body 1 and improve the lightness of the component.

[0057] In order to ensure the overall strength and rigidity of the beam body 1 on the basis of lightweight design:

[0058] In the optional scheme of this embodiment, it is more preferred that each mounting seat 2, each arched connecting rib plate 3 and each reinforcing rib plate 4 are integrally formed with the beam body 1. The mounting seat 2, the arched connecting rib plate 3 and the reinforcing rib plate 4 are all integrally formed with the beam body 1, which can ensure the overall strength of the beam body 1, so that it provides a more stable and reliable load-bearing capacity and a high-speed and stable operation effect on the machine tool.

[0059] Specifically, during the design process of the crossbeam body 1, finite element stress analysis is performed after three-dimensional design to ensure its overall strength. After the finite element stress analysis, changes to the related strengthening structures such as the inner ribs, the arched connecting ribs 3, and the reinforcing ribs 4 can be set according to the actual situation, and combined with factors such as comprehensive materials and processing difficulty to ensure that it achieves the optimal effect suitable for actual use.

[0060] Among them, for other structures on the beam body 1:

[0061] Specifically, a guide rail or a guide rail installation connection portion 22 is fixedly provided on the crossbeam body 1 along its length direction, so that the carried equipment can reciprocate in its length direction.

[0062] Specifically, the beam body 1 may be provided with other existing structures according to actual needs, which will not be described in detail here.

[0063] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A machine tool beam, characterized in that: including a beam body; Both ends of the crossbeam body are provided with motor accommodating cavities, and the crossbeam body is provided with through holes corresponding to the bottom of the motor accommodating cavities for the motor shaft to pass through; Connecting parts of a sliding mechanism for sliding connection with the machine tool slide rails are fixedly arranged below the two ends of the crossbeam body.

2. The machine tool crossbeam according to claim 1, characterized in that: Both ends of the crossbeam body are respectively provided with placement holes communicating with the corresponding motor accommodating cavity, and at least one side wall of the end of the crossbeam body is provided with a communication hole communicating with the corresponding motor accommodating cavity.

3. The machine tool crossbeam according to claim 1, characterized in that: The interior of the crossbeam body is provided with a penetrating hollow cavity along the length extension direction thereof, and inner ribs are fixedly arranged in the hollow cavity.

4. The machine tool crossbeam according to claim 1, characterized in that: The crossbeam body is integrally formed.

5. The machine tool crossbeam according to claim 1, characterized in that: The material of the crossbeam body is HT300 grey cast iron.

6. The machine tool crossbeam according to claim 1, characterized in that: The bottoms of both ends of the beam body are provided with mounting seats, the bottoms of the mounting seats are lower than the bottom of the beam body, and the bottoms of the mounting seats are provided with the through holes and the connecting parts.

7. The machine tool crossbeam according to claim 6, characterized in that: Arched connecting ribs are fixedly provided on both sides of the bottom of the beam body along the traveling direction, and the ends of each arched connecting rib are respectively fixedly connected to the corresponding mounting seat; a plurality of reinforcing ribs are fixedly provided between two arched connecting ribs, and each reinforcing rib is respectively fixedly connected to the bottom of the beam body.

8. The machine tool crossbeam according to claim 3, characterized in that: A plurality of weight-reducing holes are provided on the circumferential side walls of the crossbeam body, and each of the weight-reducing holes is communicated with the hollow cavity.

9. The machine tool crossbeam according to claim 7, characterized in that: Each of the mounting seats, each of the arched connecting ribs and each of the reinforcing ribs are integrally formed with the crossbeam body.

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