Laser cutting machine body expansion structure

Abstract

This utility model discloses a laser cutting machine bed expansion structure, including a bed body and a support beam. A sliding guide mechanism is provided at the connection between the bed body and the support beam. An adjustable fastening assembly is installed inside the sliding guide mechanism. The sliding guide mechanism includes an L-shaped slide, a movable plate on the side of the L-shaped slide, and a limiting guide rail penetrating through the inner side of the movable plate. One end of the limiting guide rail is fixedly connected to the L-shaped slide. The limiting guide rail extends along the length of the support beam and has a T-shaped cross-section. The T-shaped guide rail design ensures axial sliding freedom and prevents lateral displacement through geometric constraints, forming a stable guiding system. The adjustable fastening assembly includes a support bolt, an elastic washer, and a spring. The elastic washer and spring are both located on the outer side of the movable plate and are penetrated by the support bolt. This utility model has the advantages of thermal expansion adaptive compensation and multi-directional constraint, avoiding deformation and damage to the support beam due to bed expansion.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting machine technology, and in particular relates to a laser cutting machine bed expansion structure. Background Technology

[0002] A laser cutting machine is a device that uses laser technology for cutting. The mechanical parts do not contact the workpiece, preventing scratches on the workpiece surface. It offers advantages such as minimal material deformation, narrow kerf, small heat-affected zone, no mechanical stress on the cut, high processing precision, good repeatability, and no damage to the material surface. Furthermore, laser cutting machines are not limited by cutting patterns, offer automatic layout to save material, produce smooth cuts, and have low processing costs.

[0003] Existing laser cutting machine beds mostly adopt a rigid connection structure, with the bed body directly fixed to the support beam. During continuous operation and thermal expansion, this rigid connection structure easily leads to lateral compressive stress on the support beam, causing structural deformation and reduced positioning accuracy, thus affecting the machine's lifespan and machining precision. There is an urgent need to develop a bed connection structure with adaptive thermal expansion compensation, reliable multi-directional constraints, and frictional stability. Utility Model Content

[0004] The purpose of this invention is to provide a laser cutting machine bed expansion structure to solve the common problems of laser cutting head machine bed expansion caused by heat expansion, which leads to compression and deformation of the cutting machine beam.

[0005] The present invention achieves the above objectives through the following technical solution: it includes a bed body and a support beam, wherein a sliding guide mechanism is provided at the connection between the bed body and the support beam, and an adjustable fastening component is assembled inside the sliding guide mechanism;

[0006] The sliding guide mechanism includes an L-shaped slide block with a movable plate on its side. A limiting guide rail is provided through the inner side of the movable plate. One end of the limiting guide rail is fixedly connected to the L-shaped slide block. The limiting guide rail extends along the length of the support beam and has a T-shaped cross-section. The T-shaped cross-section guide rail design ensures axial sliding freedom and prevents lateral displacement through geometric constraints, forming a stable guiding system.

[0007] The adjustable fastening assembly includes a support bolt, an elastic washer, and a spring. The elastic washer and the spring are both located on the outside of the movable plate and are penetrated by the support bolt. After penetrating the movable plate, the support bolt is connected to the support beam by a thread.

[0008] Furthermore, the sliding guide mechanism and the adjustable fastening assembly are provided with a wear-resistant ceramic coating with a thickness of 0.5-1.2 mm and a surface roughness Ra≤0.8 μm.

[0009] Furthermore, connecting guard plates are fixedly provided on both sides of the L-shaped slide, and the connecting guard plates are slidably connected to the support beam. The bottom of the L-shaped slide is connected to the bed body and the slider through a slide rail.

[0010] Furthermore, a length-limiting positioning plate is fixedly provided at the bottom of the support beam. The two ends of the length-limiting positioning plate abut against the L-shaped slide. When the length-limiting positioning plate abuts against the L-shaped slide, it reaches the maximum retraction stroke to avoid excessive retraction of the bed body. At the same time, the length-limiting positioning plate and the L-shaped slide can prevent the support beam from sliding arbitrarily to avoid positional displacement.

[0011] Furthermore, the limiting guide rail is made of copper-based composite material, and the surface of the limiting guide rail is provided with a plurality of oil storage micropores. The diameter of the oil storage micropores is 50-200μm and the depth is 0.3-0.8mm. The oil storage micropores are filled with oily lubricating fluid, and continuous lubrication is achieved through the oil storage micropores. During the sliding process, frictional heat causes the oily lubricating fluid in the micropores to precipitate and form an oil film.

[0012] Beneficial effects: This utility model is reasonably designed and has the following beneficial effects:

[0013] 1. In this utility model, the linear displacement caused by the thermal expansion of the bed is converted into the axial sliding degree of freedom of the movable plate through the synergistic effect of the sliding guide mechanism and the adjustable fastening assembly. The geometric constraint characteristics of the T-section enable the movable plate to move smoothly along the predetermined track. The separate elastic connection between the movable plate and the support beam enables the support beam to be unaffected by the bed and avoids the support beam from being deformed by lateral compression due to rigid connection.

[0014] 2. In this utility model, an oil storage micropore with a gradient pore size is used in conjunction with a copper-based composite material guide rail. When heat is generated by friction, lubricant is automatically released to form an oil film. Combined with the wear-resistant ceramic coating on the surface, the friction coefficient of the sliding pair is reduced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a partial structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of part A of the present invention.

[0018] In the diagram: 1-Bed body, 2-Support beam, 3-Sliding guide mechanism, 4-Adjustable fastening assembly;

[0019] 21-Length limiting positioning plate, 31-L-shaped slide, 32-Modible plate, 33-Limiting guide rail, 34-Connecting guard plate, 41-Support bolt, 42-Elastic washer, 43-Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Combination Figures 1 to 3 The laser cutting machine bed expansion structure shown includes a bed body 1 and a support beam 2. A sliding guide mechanism 3 is provided at the connection between the bed body 1 and the support beam 2. An adjustable fastening component 4 is installed inside the sliding guide mechanism 3.

[0022] The sliding guide mechanism 3 includes an L-shaped slide 31, a movable plate 32 on the side of the L-shaped slide 31, and a limiting guide rail 33 running through the inner side of the movable plate 32. One end of the limiting guide rail 33 is fixedly connected to the L-shaped slide 31. The limiting guide rail 33 extends along the length of the support beam 2 and has a T-shaped cross-section. The T-shaped cross-section guide rail design ensures axial sliding freedom and prevents lateral displacement through geometric constraints, forming a stable guiding system.

[0023] The adjustable fastening assembly 4 includes a support bolt 41, an elastic washer 42, and a spring 43. The elastic washer 42 and the spring 43 are both located on the outside of the movable plate 32 and are both penetrated by the support bolt 41. After penetrating the movable plate 32, the support bolt 41 is connected to the support beam 2 by a thread.

[0024] The sliding guide mechanism 3 and the adjustable fastening component 4 are provided with a wear-resistant ceramic coating with a thickness of 0.5-1.2 mm and a surface roughness Ra≤0.8 μm.

[0025] Connecting guard plates 34 are fixed on both sides of the L-shaped slide 31. The connecting guard plates 34 are slidably connected to the support beam 2. The bottom of the L-shaped slide 31 is connected to the bed body 1 through the slide rail and the slider.

[0026] The bottom of the support beam 2 is fixed with a length limiting positioning plate 21. The two ends of the length limiting positioning plate 21 abut against the L-shaped slide 31. When the length limiting positioning plate 21 abuts against the L-shaped slide, it reaches the maximum retraction stroke to avoid excessive retraction of the bed body 1. At the same time, the length limiting positioning plate 21 and the L-shaped slide 31 can prevent the support beam 2 from sliding arbitrarily to avoid positional displacement.

[0027] The limiting guide rail 33 is made of copper-based composite material. The surface of the limiting guide rail 33 is provided with several oil storage micropores. The diameter of the oil storage micropores is 50-200μm and the depth is 0.3-0.8mm. The oil storage micropores are filled with oily lubricating fluid, which achieves continuous lubrication. During the sliding process, the frictional heat causes the oily lubricating fluid in the micropores to precipitate and form an oil film.

[0028] Working Principle: In use, after the bed body 1 expands due to heat, the movable plate 32 is pushed by the L-shaped slide 31 to linearly displace along the T-shaped limiting guide rail 33. The T-shaped guide rail design ensures axial sliding freedom and prevents lateral displacement through geometric constraints, forming a stable guiding system. In the adjustable fastening assembly 4, the spring 43 and the elastic washer 42 form a secondary elastic system. When the movable plate 32 is displaced, the pushing force causes the spring 43 to press its stroke. After the bed body 1 dissipates heat and contracts to its original position, the restoring force of the spring 43 pushes the movable plate 32 to return to its original position along with the L-shaped slide 31. When the length limiting positioning plate 21 abuts against the L-shaped slide 31, it reaches its maximum contraction stroke, thereby preventing the bed body 1 from excessively contracting. At the same time, since the connecting guard plate 34 is slidably connected to the support beam 2, the length limiting positioning plate 21 and the L-shaped slide 31 can prevent the support beam 2 from sliding arbitrarily to avoid positional displacement.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser cutting machine bedstock expansion structure comprising a bedstock body (1) and a support beam (2), characterized in that: The connecting part of the lathe body (1) and the support beam (2) is provided with a sliding guide mechanism (3), and the sliding guide mechanism (3) is internally fitted with an adjustable fastening assembly (4); The sliding guide mechanism (3) comprises an L-shaped sliding seat (31), the L-shaped sliding seat (31) is provided with a movable plate (32) on the side surface, a limiting guide rail (33) is penetratingly arranged on the inner side of the movable plate (32), one end of the limiting guide rail (33) is fixedly connected with the L-shaped sliding seat (31), and the limiting guide rail (33) extends along the length direction of the support beam (2) and has a T-shaped structure in section; The adjustable fastening assembly (4) comprises a support bolt (41), an elastic washer (42) and a spring (43), the elastic washer (42) and the spring (43) are arranged on the outer side of the movable plate (32) and are penetrated by the support bolt (41), and the support bolt (41) is threadedly connected with the support beam (2) after penetrating the movable plate (32).

2. The laser cutting machine body expansion structure according to claim 1, characterized in that: The sliding guide mechanism (3) and the adjustable fastening assembly (4) are provided with a wear-resistant ceramic coating on the surface, the coating thickness is 0.5-1.2mm, and the surface roughness Ra is less than or equal to 0.8μm.

3. The laser cutting machine body expansion structure according to claim 2, characterized in that: The L-shaped sliding seat (31) is fixedly provided with a connecting guard plate (34) on both sides, the connecting guard plate (34) is slidably connected with the support beam (2), and the bottom of the L-shaped sliding seat (31) is connected with the lathe body (1) through a sliding rail and a sliding block.

4. The laser cutting machine body expansion structure according to claim 3, characterized in that: A length-limiting positioning plate (21) is fixedly arranged at the bottom of the support beam (2), and the length-limiting positioning plate (21) is abutted with the L-shaped sliding seat (31) at both ends.

5. The laser cutting machine body expansion structure according to claim 4, characterized in that: The limiting guide rail (33) is made of copper-based composite material, a plurality of oil storage micropores are arranged on the surface of the limiting guide rail (33), the pore diameter of the oil storage micropores is 50-200μm, the pore depth is 0.3-0.8mm, and the oil storage micropores are filled with oil lubricating liquid.

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