Cross beam vibration suppression damper, cross beam provided with damper and laser cutting machine

Abstract

The utility model discloses a cross beam vibration suppression damper, a cross beam equipped with the damper and a laser cutting machine, the cross beam vibration suppression damper comprises a plurality of guide rods and balancing weights sleeved on the outer sides of the plurality of guide rods in a sliding mode, and each end of each guide rod is sequentially sleeved with a damping block and a fixing piece. Elastic pieces are arranged between the two sides of the balancing weight and the damping blocks respectively. The cross beam vibration suppression dampers are installed at the two ends of the cross beam, the specifications of all components forming the dampers are adjusted, then the absorption frequency of the dampers is changed so as to adapt to cross beams of different specifications, when the cross beam generates excitation in the horizontal direction, due to the action of the dampers, part of vibration can be absorbed preferentially, and the cross beam vibration suppression effect is improved. Therefore, the vibration of the cross beam is obviously reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cutting equipment, and in particular relates to a beam vibration suppression damper, a beam equipped with the damper, and a laser cutting machine. Background Art

[0002] Laser cutting machines are a common type of cutting equipment in the metalworking industry. They use laser beams instead of traditional mechanical knives to process workpieces. They offer high cutting precision, fast cutting speed, freedom from cutting pattern restrictions, automatic layout to save material, smooth cuts, and low processing costs. They are poised to gradually improve upon or even replace traditional metal cutting equipment. Currently, market demand for laser cutting machines is increasing, leading to ever-longer gantry beams for laser cutting equipment. This increased beam length, due to insufficient beam rigidity, can cause noticeable vibration under high acceleration. Even after the beam is in place, this vibration takes time to dissipate. When processing complex trajectories, this vibration can lead to inaccurate machining and wavy edges on the workpiece. To improve precision, existing methods can only reduce processing speed, which compromises efficiency. Therefore, suppressing vibration in long beams of cutting equipment has become a pressing challenge within the industry. Utility Model Content

[0003] In response to the defects in the background technology, the utility model provides a beam vibration suppression damper, a beam equipped with the damper, and a laser cutting machine to solve the problem in the prior art that the long beam of the laser cutting machine vibrates significantly under high acceleration.

[0004] According to one aspect of the present application, a beam vibration suppression damper is provided, comprising a plurality of guide rods and counterweight blocks slidably sleeved on the outside of the plurality of guide rods, a damping block and a fixing member being sleeved on each end of each guide rod in sequence, and elastic members being respectively arranged on both sides of the counterweight block and between each damping block.

[0005] Furthermore, there are two guide rods, and two parallel through holes are symmetrically provided on both sides of the counterweight block, and the two guide rods are respectively slidably inserted into the two through holes of the counterweight block.

[0006] Furthermore, the elastic member is a spring sleeved on the outside of the guide rod.

[0007] Furthermore, both ends of each guide rod are provided with external threads, and the fixing member includes a nut connected to the external threads at the end of the guide rod.

[0008] Furthermore, the fixing member further includes a guide sleeve which is sleeved on the end of the guide rod and located between the damping block and the nut.

[0009] Furthermore, the guide sleeves are provided with a plurality of through holes and are equipped with fixing screws.

[0010] Furthermore, a circular groove adapted to the front end of the guide sleeve is provided on the side of the damping block corresponding to the guide sleeve.

[0011] According to another aspect of the present application, a beam is provided, comprising a beam body with a hollow inner side, and the beam body is equipped with a beam vibration suppression damper as described in the above technical solution, the two ends of each guide rod of the beam vibration suppression damper respectively pass through the side wall of the beam body, the damping blocks and fixing parts at each end of each guide rod are respectively arranged on the inner and outer sides of the side wall of the beam body, the two ends of each elastic part are respectively in contact with the counterweight block and the damping block and are in a compressed state under the action of the two, and the damping block is tightly attached to the inner side of the side wall of the beam body, and the fixing part fixes the beam vibration suppression damper on the outer side of the side wall of the beam body.

[0012] Furthermore, the beam vibration suppression dampers are respectively installed at both ends of the beam body.

[0013] According to another aspect of the present application, a laser cutting machine including the beam described in the above technical solution is provided.

[0014] Compared with the prior art, the beam vibration suppression damper, the beam equipped with the damper, and the laser cutting machine provided by the present invention have the following beneficial effects:

[0015] (1) The structural design of the utility model is novel, simple and reasonable, and can effectively solve the problem of obvious vibration of the long beam of the laser cutting machine under high acceleration in the prior art.

[0016] (2) The utility model installs dampers at both ends of the beam. When the beam generates horizontal excitation, the dampers can preferentially absorb a portion of the vibration, thereby reducing the vibration of the beam itself.

[0017] (3) The utility model can change the absorption frequency of the damper to adapt to beams of different specifications by adjusting the specifications of the components of the damper (such as the mass of the counterweight block, the preload of the spring or the thickness of the spring, etc.).

[0018] (4) The utility model makes the installation of the guide rod more stable by setting the guide sleeve, and further improves the use effect of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the crossbeam vibration suppression damper of the utility model when used on a crossbeam;

[0020] Figure 2yes Figure 1 An enlarged schematic diagram of the end of the middle beam;

[0021] Figure 3 is a cross-sectional schematic diagram of the crossbeam vibration suppression damper when in use on the crossbeam;

[0022] Figure 4 yes Figure 3 Enlarged schematic diagram of the end of the center cross member vibration suppression damper when used on the cross member.

[0023] In the figure: 1. guide rod; 2. counterweight; 3. elastic member; 4. damping block; 5. fixing member; 51. guide sleeve; 52. fixing screw; 53. gasket; 54. nut; 6. beam body. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the common meanings understood by people with ordinary skills in the field to which this disclosure belongs. The terms "upper," "lower," "left," "right," "front," "back," "inside," "outside," etc. used in the patent application specification and claims of this disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. "Connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect. Any matters not described in detail in this utility model are generally known to those skilled in the art.

[0025] Example 1:

[0026] The present application provides a beam vibration suppression damper, which includes a plurality of cylindrical guide rods 1 and a counterweight block 2 slidably sleeved on the outside of the guide rods 1. A damping block 4 and a fixing member 5 are sequentially sleeved on each end of each guide rod 1. Elastic members 3 are respectively arranged between the two sides of the counterweight block 2 and each damping block 4. The elastic member 3 is preferably a spring, which is sleeved on the outside of the guide rod 1.

[0027] In this embodiment, the counterweight 2 is a regular, symmetrical structure, such as a rectangular parallelepiped. Taking two guide rods 1 as an example, the counterweight 2 has two parallel through-holes symmetrically defined on either side. The two guide rods 1 slide through the two through-holes of the counterweight 2, allowing the counterweight 2 to slide left and right on the two parallel guide rods 1. Preferably, the damping block 4 is cylindrical.

[0028] To facilitate the installation of the beam vibration suppression damper on the beam, external threads are provided at both ends of each guide rod 1, and the fixing part 5 includes a nut 54 connected to the external thread at the end of the guide rod 1. The damper can be fixed on the beam through the nuts 54 on both sides of the guide rod 1.

[0029] When the beam vibration suppression damper is in use, the elastic members 3 are in a compressed state due to the action of the counterweight block 2 and the damping blocks 4 .

[0030] Example 2:

[0031] Based on Example 1, the present application further provides a crossbeam vibration suppression damper, wherein the fixing member 5 further includes a guide sleeve 51 that is sleeved on the end of the guide rod 1 and located between the damping block 4 and the nut 54. In this embodiment, by fixing the guide sleeve 51 to the outside of the crossbeam, the guide rod 1 is easily installed, and the guide rod 1 can move along the guide sleeve 51, avoiding direct contact between the guide rod 1 and the crossbeam, thereby further improving the use effect of the entire device.

[0032] In this embodiment, the guide sleeve 51 includes a guide circular tube and a mounting disc extending outward from one end of the guide circular tube. A plurality of through holes are evenly arranged on the mounting disc. Generally, there are three through holes, which are distributed in a circle with the center of the mounting disc as the center. A fixing screw 52 is arranged in the through hole, and the guide sleeve 51 is fixed to the beam by the fixing screw 52.

[0033] Preferably, the through hole is a countersunk hole and the fixing screw 52 is a countersunk bolt. This arrangement avoids interference with the installation of the nut 54 after the fixing screw 52 is installed, making it easier to install the subsequent nut 54.

[0034] In actual use, after the guide sleeve 51 is fixedly installed on the beam, one end of the guide sleeve 51 is located inside the beam, and the damping block 4 needs to fit on the inner wall of the beam. To avoid conflict between the two, a circular groove is formed on one side of the damping block 4 to adapt to the end of the guide sleeve 51.

[0035] Example 3:

[0036] Based on the same inventive concept, the present application also provides a beam, including a beam body 6 with a hollow inner side, which is illustrated as a beam body 16 with a quadrilateral structure. The beam body 6 is equipped with a beam vibration suppression damper in Example 1, and the installation position is usually at both ends of the beam body 16 close to the installation position of the drive device. The two ends of each guide rod 1 of the beam vibration suppression damper respectively pass through the side wall of the beam body 6, and the damping blocks 4 and fixing parts 5 at each end of each guide rod 1 are respectively tightly arranged on the inner and outer sides of the side wall of the beam body 6. The two ends of each elastic part 3 (spring) are respectively in contact with the counterweight block 2 and the damping block 4 and are in a compressed state under the action of the two, that is: under the action of the elastic part 3, the damping block 4 is in contact with the inner side wall of the beam body 6. At the same time, the entire beam vibration suppression damper is fixed to the beam body 6 through the nut 54 of the fixing part 5 on the outer side of the side wall of the beam body 6.

[0037] During operation, when the crossbeam reciprocates at high speed along the axial direction of the guide rod, the vibration generated by the crossbeam is preferentially absorbed by the damper, as the damper's first-order mode is similar to the mode in the direction of the beam's motion, and the counterweight is relatively light. When an external excitation frequency is transmitted to the crossbeam, the damper is preferentially energized, causing the counterweight to reciprocate along the guide rod. The dynamic mechanism composed of the spring and damper absorbs this vibration energy, thereby reducing the vibration of the crossbeam itself.

[0038] In order to meet the requirements of using the damper on beams of different specifications, the damper absorption frequency can be changed to adapt to beams of different specifications by adjusting factors such as the mass of the counterweight, the preload of the spring or the thickness of the spring to change the spring stiffness.

[0039] Example 4:

[0040] Based on the same inventive concept, the present application provides a crossbeam, including a crossbeam body 6 with a hollow interior, and is illustrated as a crossbeam body 16 with a quadrilateral structure. The crossbeam body 6 is equipped with a crossbeam vibration suppression damper in Example 2, that is, relative to Example 3, the crossbeam vibration suppression damper adds a guide sleeve 51 to improve the assembly effect of the guide rod 1 and the use effect of the entire crossbeam vibration suppression damper. The installation position of the damper is usually at both ends of the crossbeam body 16 near the installation position of the drive device. The guide sleeves of the two fixing members 5 at both ends of each guide rod 1 of the crossbeam vibration suppression damper 51 are respectively correspondingly penetrated on the side walls of the beam body 6, and each guide rod 1 is respectively penetrated in the corresponding guide sleeve 51. The damping blocks 4 at each end of each guide rod 1 and the nuts 54 of the fixing members 5 are respectively close to the inner wall of the beam body 6 and the outer side of the guide sleeve 51. The two ends of each elastic member 3 (spring) are respectively in contact with the counterweight block 2 and the damping block 4 and are in a compressed state under the action of the two, that is: under the action of the elastic member 3, the damping block 4 is in contact with the inner wall of the beam body 6, and the outer side of the side wall of the beam body 6 is fixed to the entire beam vibration suppression damper on the beam body 6 through the nuts 54 of the fixing members 5.

[0041] In this embodiment, the damping block 4 and the guide sleeve 5 of the crossbeam vibration suppression damper in Example 3 can be further optimized. A circular groove that matches the front end of the guide sleeve 51 is provided on the side of the damping block 4 corresponding to the guide sleeve 51. When in use, the front end of the guide sleeve 51 can extend into the circular groove of the guide sleeve 51. In addition, to improve the positioning and fixing effect of the fixing member 5, the guide sleeve 51 can also be provided with multiple through holes and removably connected to the side wall of the crossbeam body 6 through the through holes by fixing screws 52. A gasket 53 can also be provided between the nut 54 and the guide sleeve 51, and the crossbeam vibration suppression damper is tightened to the crossbeam body 6 through the nut 54 and the gasket 53. The through hole is preferably a countersunk hole, and the fixing screw 52 is preferably a countersunk bolt to facilitate the installation of the nut 54.

[0042] The usage of this embodiment and the adjustment method of the counterweight block and the spring to meet the needs of use on beams of different specifications are the same as those of Example 3.

[0043] Example 5:

[0044] Based on the same inventive concept, the present application provides a laser cutting machine comprising the crossbeam of embodiment 3 or 4, with components of the laser cutting machine (such as a laser processing head, etc.) disposed on the crossbeam. Furthermore, the crossbeam is also suitable for moving equipment with light loads and high acceleration and speed.

Claims

1. A beam vibration suppression damper, characterized in that: The invention comprises a plurality of guide rods (1) and counterweight blocks (2) slidably sleeved on the outside of the plurality of guide rods (1); a damping block (4) and a fixing member (5) are sleeved on each end of each guide rod (1); and elastic members (3) are respectively provided between the two sides of the counterweight block (2) and each damping block (4).

2. The beam vibration suppression damper according to claim 1, characterized in that: There are two guide rods (1), and two parallel through holes are symmetrically provided on both sides of the counterweight block (2). The two guide rods (1) are respectively slidably inserted into the two through holes of the counterweight block (2).

3. A beam vibration suppression damper according to claim 1 or 2, characterized in that: The elastic member (3) is a spring sleeved on the outside of the guide rod (1).

4. The beam vibration suppression damper according to claim 3, characterized in that: Each guide rod (1) is provided with external threads at both ends, and the fixing member (5) comprises a nut (54) connected to the external threads at the end of the guide rod (1).

5. The beam vibration suppression damper according to claim 4, characterized in that: The fixing member (5) further comprises a guide sleeve (51) sleeved on the end of the guide rod (1) and located between the damping block (4) and the nut (54).

6. The beam vibration suppression damper according to claim 5, characterized in that: The guide sleeves (51) are each provided with a plurality of through holes and are equipped with fixing screws (52).

7. A beam vibration suppression damper according to claim 5 or 6, characterized in that: A circular groove adapted to the front end of the guide sleeve (51) is provided on the side of the damping block (4) corresponding to the guide sleeve (51).

8. A beam comprising a beam body (6) with a hollow interior, characterized in that: The beam body (6) is equipped with a beam vibration suppression damper as described in any one of claims 1 to 7, and the two ends of each guide rod (1) of the beam vibration suppression damper respectively pass through the side wall of the beam body (6), and the damping blocks (4) and fixing members (5) at each end of each guide rod (1) are respectively arranged on the inner and outer sides of the side wall of the beam body (6), and the two ends of each elastic member (3) are respectively in contact with the counterweight block (2) and the damping block (4) and are in a compressed state under the action of the two, and the damping block (4) is tightly attached to the inner side of the side wall of the beam body (6), and the fixing member (5) fixes the beam vibration suppression damper on the outer side of the side wall of the beam body (6).

9. The crossbeam according to claim 8, characterized in that: Both ends of the crossbeam body (6) are respectively equipped with the crossbeam vibration suppression dampers.

10. A laser cutting machine comprising the beam according to claim 8 or 9.

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