Lathe bed structure of assembled machine tool, laser cutting machine and assembling method

Abstract

The invention discloses a lathe bed structure of an assembled machine tool, a laser cutting machine and an assembling method, and belongs to the technical field of lathe beds of machine tools, the lathe bed structure comprises a rack, the rack comprises a first longitudinal beam, a second longitudinal beam and an assembling beam, and the first longitudinal beam and the second longitudinal beam are oppositely arranged in parallel; the two ends of the splicing beam are detachably connected with the opposite side walls of the first longitudinal beam and the second longitudinal beam correspondingly, splicing bases are arranged on the opposite side walls of the first longitudinal beam and the second longitudinal beam correspondingly, splicing heads are arranged at the two ends of the splicing beam, and the splicing bases and the splicing heads are detachably connected through slope fit. The assembled building block can be transported after being disassembled and can be quickly assembled in a site, the overall lightweight design is achieved, and the transportation and installation cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tool bed, in particular to a bed structure of an assembled machine tool, a laser cutting machine and a laser cutting machine assembling method. BACKGROUND

[0002] The laser cutting machine is widely used in the plate processing industry for its high precision and high efficiency, and is used for the precision machining of metal plates. At present, the bed structure of the laser cutting machine is generally welded and spliced from pipes or plates. However, the welding process has many problems: welding deformation and precision influence: high heat generated during the welding process is easy to cause the bed structure to deform, and the quality of the weld directly affects the overall strength and precision of the bed, thereby reducing the machining stability of the equipment. After long-term use, the weld may produce uncontrollable deformation due to stress release or fatigue, and needs to be repaired or even processed again, which greatly increases the maintenance cost; insufficient rigidity or excessive weight of the cross beam: the existing cross beam is mostly made of aluminum to reduce weight, but the rigidity is insufficient; if steel is used, the rigidity can be improved, but the cross beam is too heavy, affecting the dynamic performance of the equipment; high transportation cost: the traditional bed is a whole welded structure and cannot be disassembled, so it needs to occupy the whole cabinet space during transportation, especially when transported overseas, the cost is significantly increased, and it is difficult to meet the packing requirements of standard containers.

[0003] In addition, the installation and adjustment of the main beam in the prior art rely on manual positioning, and the precision is difficult to guarantee, and the local high temperature generated by welding is easy to cause structural thermal deformation, further aggravating the machining error. In view of the above problems, a new type of laser cutting machine structure is needed, which can reduce welding deformation, improve the rigidity of the bed, realize modular disassembly to reduce transportation cost, and optimize the design of the cross beam to meet the lightweight and high rigidity requirements. SUMMARY

[0004] One of the purposes of the present application is to provide a bed structure of an assembled machine tool, which solves the problems of welding affecting the forming precision, insufficient rigidity of aluminum parts being easily affected by temperature, and high packaging and transportation cost.

[0005] To achieve the above-mentioned purposes of the application, the technical solutions adopted by the present application are as follows:

[0006] A bed structure of an assembled machine tool, comprising a rack, the rack comprising a first longitudinal beam, a second longitudinal beam and an assembled beam, the first longitudinal beam and the second longitudinal beam being arranged in parallel opposite to each other, and the two ends of the assembled beam being detachably connected with the opposite side walls of the first longitudinal beam and the second longitudinal beam respectively, the opposite side walls of the first longitudinal beam and the second longitudinal beam are each provided with a splicing seat, and the two ends of the assembled beam are provided with splicing heads, the splicing seat and the splicing head are detachably connected through the cooperation of the inclined surfaces, can be disassembled for transportation, can be quickly assembled in the site, the overall design is lightweight, and the transportation and installation costs are reduced.

[0007] Furthermore, it also includes a movable crossbeam, which is slidably connected to the first longitudinal beam and the second longitudinal beam. The movable crossbeam includes a first main beam and a second main beam. The first main beam and the second main beam are stacked by inclined planes to form the movable crossbeam, which reduces the overall weight, ensures the support strength, and facilitates transportation and assembly.

[0008] Furthermore, the first and second support beams have the same structure. The cross-section of the first support beam is triangular. The first support beam includes two connected straight sides and a first inclined side. A joint opening and a first dead side extending outward along the joint opening are provided on one of the straight sides of the first support beam. The first inclined sides of the first and second support beams are in contact with each other. This design is easy to manufacture and provides localized strength for the load-bearing parts, ensuring service life.

[0009] Furthermore, both the first and second support beams have quadrilateral cross-sections, each including at least one inclined side. The second inclined side of the first support beam and the third inclined side of the second support beam are in contact. The upward-facing side of the first support beam has a first joint and a second dead side extending outward along the first joint. The third inclined side has an opening and a third dead side extending outward along the opening. The second dead side and the third dead side are respectively located on the two adjacent side walls of the movable crossbeam, facilitating height adjustment during installation.

[0010] Furthermore, the first longitudinal beam and the second longitudinal beam are mirror symmetrical in structure. The top wall of the first longitudinal beam is provided with an interface and a fourth dead edge extending outward along the interface. The opposite side walls of the first longitudinal beam and the second longitudinal beam are provided with a receiving part to improve the strength of the connection and leave room for component installation.

[0011] Furthermore, the first longitudinal beam and the second longitudinal beam each have several mounting slots on their opposite sidewalls, and several splicing seats are arranged one-to-one in the several mounting slots to connect the splicing seats and to act as reinforcements to improve the torsional strength of the longitudinal beam.

[0012] Furthermore, the splicing base includes an inclined surface, a guide strip, and a connecting hole. The connecting hole is disposed on the inclined surface, and the guide strip is disposed on the inclined surface along its length. The splicing joint is provided with a guide groove. When the splicing base and the splicing joint are wedge-shaped, the guide strip is embedded in the guide groove, which serves to constrain the direction, reduce safety difficulties, and improve installation accuracy.

[0013] Furthermore, the splicing base includes an inclined surface, a guide groove, and a connecting hole. The guide groove and the connecting hole are both provided on the inclined surface. When the splicing base and the splicing joint are wedge-shaped, the splicing joint is embedded in the guide groove, which serves to constrain the direction, reduce safety difficulties, and improve installation accuracy.

[0014] The second objective of this invention is to provide a laser cutting machine that solves the problems of transportation and installation difficulties and high costs associated with existing laser cutting machines.

[0015] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0016] A laser cutting machine includes a bed structure of the assembled machine tool, a laser cutting head, and several toothed plates. The laser cutting head is mounted on the bed structure of the assembled machine tool. The several toothed plates are connected side by side and mounted on the frame. Each toothed plate includes multiple racks, a transverse connector, a support base, and a positioning plate. The multiple racks are spaced apart, and both ends of the multiple racks overlap the support base. The positioning plate fixes the multiple racks to the support base. The transverse connector is arranged at the bottom of the multiple racks in a direction parallel to the support base. After the components are lightweight, they can be transported separately and assembled quickly, reducing transportation and assembly costs.

[0017] The third objective of this invention is to provide a method for assembling a laser cutting machine, which solves the problems of high transportation costs and difficult assembly of existing laser cutting machines.

[0018] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0019] A laser cutting machine assembly method includes the following steps:

[0020] S1. Place the first longitudinal beam and the second longitudinal beam on a flat ground, aligning the two ends of the first longitudinal beam and the second longitudinal beam with a certain distance between them.

[0021] S2. Take the assembly beam, place the splicing joints at both ends of the assembly beam onto the splicing seat to form a wedge fit, adjust the depth of the wedge fit to fix the distance between the first longitudinal beam and the second longitudinal beam, then fix the assembly beam onto the first longitudinal beam and the second longitudinal beam, and install the remaining assembly beams in sequence to make the frame completely fixed.

[0022] S3. Take the plurality of toothed plates and install them onto the frame, and connect the plurality of toothed plates together;

[0023] S4. The movable crossbeam is installed on the first longitudinal beam and the second longitudinal beam, and then the laser cutting head is installed on the movable crossbeam. The installation operation is convenient and can ensure the accuracy of use.

[0024] The beneficial effects of this invention are as follows:

[0025] (1) The bed structure of this modular machine tool adopts a modular bed structure. The connection of the two longitudinal beams is achieved through the wedge-shaped fit between the splicing seat and the splicing joint. There is no need to use welding process, avoiding the thermal deformation problem caused by traditional welding process. The bed has strong overall rigidity and is not easy to deform after long-term use, ensuring stable processing accuracy of the equipment. The wedge-shaped fit between the splicing seat and the splicing joint can adjust the width of the frame, improve the assembly accuracy and reduce the assembly difficulty.

[0026] (2) The movable crossbeam structure on the bed of the assembled machine tool takes into account both rigidity and lightweight. It adopts a split movable crossbeam, which is composed of the first main beam and the second main beam stacked together by the inclined plane. While ensuring the rigidity of the steel, the overall weight is reduced through structural optimization, avoiding the problems of insufficient rigidity of traditional aluminum crossbeams or excessive weight of steel crossbeams, and improving the dynamic performance of the equipment. The first main beam and the second main beam are both steel parts and molded, with high forming accuracy, and are not easily affected by temperature during use.

[0027] (3) The laser cutting machine adopts a detachable assembly structure, which is convenient for disassembly and packing for transportation. The whole machine has no welding structure, which is especially suitable for overseas standard container transportation. Compared with the traditional integral welded bed, it can significantly reduce the transportation space occupation, reduce logistics costs, and improve on-site assembly efficiency. Attached Figure Description

[0028] Figure 1 The isometric drawing of the laser cutting machine provided by this invention;

[0029] Figure 2 Axonometric drawing of the frame and gear plate assembly provided for this invention;

[0030] Figure 3 Axonometric views of the movable crossbeam and support column provided for this invention;

[0031] Figure 4 This is a structural diagram of a combination of multiple toothed plates provided by the present invention;

[0032] Figure 5 An isometric view of the frame provided for this invention;

[0033] Figure 6 Axonometric drawing of the assembled beam provided by the present invention;

[0034] Figure 7 Structural diagrams of the first and second longitudinal beams provided for this invention;

[0035] Figure 8 A partially enlarged view of the first longitudinal beam provided for this invention;

[0036] Figure 9 A cross-sectional view of the first longitudinal beam provided for this invention;

[0037] Figure 10 This is a structural diagram of the assembly base provided by the present invention;

[0038] Figure 11 This is a structural diagram of the assembly base two provided by the present invention;

[0039] Figure 12 The structural diagram of the movable crossbeam provided by the present invention;

[0040] Figure 13 The cross-section of the movable beam provided by the present invention Figure 1 ;

[0041] Figure 14 The cross-section of the movable beam provided by the present invention Figure 2 .

[0042] Figure label:

[0043] 1. Frame; 11. First longitudinal beam; 111. Hollow section; 112. Receiving section; 113. Fourth dead edge; 114. Interface; 115. Groove; 116. Smoke vent; 12. Second longitudinal beam; 13. Cable chain; 14. Assembling beam; 141. Splicing joint; 15. Splicing seat; 151. Inclined component; 152. Guide strip; 153. Connecting hole; 154. Guide groove; 155. Scale line; 16. Support leg; 2. Moving crossbeam; 21. First main support beam; 211. First 212. Beam wall; 213. Second dead edge; 214. First joint; 215. Second bevel; 216. Joint opening; 217. First bevel; 22. Second support beam; 221. Second beam wall; 222. Third dead edge; 223. Opening; 224. Third bevel; 23. Left support column; 24. Right support column; 25. Protective cover; 3. Toothed plate; 31. Toothed rack; 32. Transverse connector; 33. Support base; 34. Positioning pressure plate; 4. Laser cutting head. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] like Figures 1-14As shown, this embodiment discloses a bed structure for an assembled machine tool, including a frame 1. The frame 1 includes a first longitudinal beam 11, a second longitudinal beam 12, and several assembled beams 14. The first longitudinal beam 11 and the second longitudinal beam 12 are arranged in parallel opposite directions. The two ends of the assembled beams 14 are detachably connected to the side walls opposite to the first longitudinal beam 11 and the second longitudinal beam 12, respectively. Each of the opposite side walls of the first longitudinal beam 11 and the second longitudinal beam 12 is provided with a splicing seat 15. Both ends of the assembled beams 14 are provided with splicing joints 141. The splicing seat 15 and the splicing joint 141 are detachably connected through a bevel engagement. Specifically, the assembled beams 14... Both ends of the assembly beam 14 form a wedge-shaped fit with the first longitudinal beam 11 and the second longitudinal beam 12, and the movement direction of the wedge-shaped fit is perpendicular to the ground. The two ends of the assembly beam 14 can be directly placed on the splicing seat 15 during assembly, which can be operated by a single person, reducing the difficulty of operation. The splicing seat 15 and the splicing joint 141 are wedge-shaped fits. The width of the forming frame 1 can be determined according to the distance between the upper end face of the assembly beam 14 and the upper end face of the longitudinal beam, making assembly and positioning convenient. Two or more assembly beams 14 connected with the first longitudinal beam 11 and the second longitudinal beam 12 can form a stable frame structure. The main frame structure is weld-free, ensuring the installation accuracy.

[0047] Preferably, the angle between the inclined surface of the wedge-shaped fit and the ground is greater than 15°, providing a large adjustment range and self-locking.

[0048] Furthermore, it also includes a movable crossbeam 2, which is slidably connected to the first longitudinal beam 11 and the second longitudinal beam 12. The movable crossbeam 2 includes a first support beam 21 and a second support beam 22. The first support beam 21 and the second support beam 22 are stacked together with inclined surfaces to form the movable crossbeam 2. The first support beam 21 and the second support beam 22 are stacked in a direction perpendicular to the ground. By adjusting the relative position of the first support beam 21 and the second support beam 22 in the horizontal direction, the height of the movable crossbeam 2 can be finely adjusted, thereby adjusting the height of the installation and processing device. The two support beams are combined and fixed to form the movable crossbeam 2, which improves the bending resistance and meets the load-bearing requirements.

[0049] Furthermore, a cable chain 13 is installed on the moving crossbeam 2 for connecting cables; a left support column 23 and a right support column 24 are provided on the lower wall near both ends of the moving crossbeam 2, and a support plate is provided on the left support column 23 and the right support column 24. The support plate is equipped with a slider, which cooperates with the guide rail to play a guiding role; a protective cover 25 is installed on the cable chain 13, and the moving parts are protected by a retractable one-piece protective cover.

[0050] See Figure 14In one embodiment, the first support beam 21 and the second support beam 22 have the same structure. The cross-section of the first support beam 21 is triangular. The first support beam 21 includes two connected straight sides and a first inclined side 217. A joint opening 216 and a first dead side 215 extending outward along the joint opening 216 are provided on one of the straight sides of the first support beam 21. The first dead side 215 overlaps with the wall surface at the joint opening 216, which improves the strength of the wall surface and is used for installing other components. The first inclined sides 217 of the first support beam 21 and the second support beam 22 are in contact with each other. The relative position of the first support beam 21 and the second support beam 22 can be adjusted up and down through the inclined contact, so as to adjust the height of the moving crossbeam 2 and meet the adjustment needs during installation.

[0051] See Figure 13 In one embodiment, the cross-sections of the first support beam 21 and the second support beam 22 are both quadrilateral and include at least one inclined side. The second inclined side 214 of the first support beam 21 and the third inclined side 224 of the second support beam 22 are in contact. The height of the moving crossbeam 2 can be adjusted during installation through the inclined contact. The first support beam 21 has a first joint 213 and a second dead side 212 extending outward along the first joint 213 on the upward side. The second dead side 212 overlaps with the wall surface at the first joint 213, which improves the load-bearing capacity of the surface. The third inclined side 224 has an opening groove 223 and a third dead side 222 extending outward along the opening groove 223. The third dead side 222 extends from the opening groove 223 to the side, which improves the load-bearing capacity of the second support beam 22 located below and prevents it from being deformed under pressure. The second dead side 212 and the third dead side 222 are respectively located on the adjacent side walls of the moving crossbeam 2 and are used to install guide rails and drive teeth.

[0052] Furthermore, the structures of the first longitudinal beam 11 and the second longitudinal beam 12 are mirror symmetrical. The first longitudinal beam 11 and the second longitudinal beam 12 are symmetrical along the center plane of the frame 1. The top wall of the first longitudinal beam 11 is provided with an interface 114 and a fourth dead edge 113 extending outward from the interface 114. The fourth dead edge 113 is stacked with the wall surface where the interface 114 is located. By thickening the wall surface, the load-bearing capacity and connection strength are improved, and deformation is prevented after being compressed. The side walls of the first longitudinal beam 11 and the second longitudinal beam 12 are provided with a receiving part 112. The receiving part 112 is used to install other components such as the toothed plate 3. The receiving part 112 is formed by the outward protrusion of the side wall of the first longitudinal beam 11 and / or the second longitudinal beam 12. Its upward end face is flat, and the side slope provides support for the upward end face, thereby improving the load-bearing capacity of the upward end face.

[0053] Furthermore, the first longitudinal beam 11 and the second longitudinal beam 12 each have several mounting slots 115 on their opposite side walls, and several splicing seats 15 are correspondingly arranged in the mounting slots 115. The mounting slots 115 penetrate the opposite side walls of the first longitudinal beam 11 and the second longitudinal beam 12, forming slots 115 and mounting holes on the opposite side walls respectively. The support seat 33 is partially inserted into the slot 115 and falls into the mounting hole, which improves the connection strength and the torsional strength of the longitudinal beam. The first longitudinal beam 11 and the second longitudinal beam 12 each have a hollow part 111 in the middle, which can reduce the overall weight and facilitate transportation and assembly.

[0054] In one embodiment, the splicing base 15 includes a beveled member 151, a guide strip 152, and a connecting hole 153. The connecting hole 153 is disposed on the beveled member 151, and the guide strip 152 is disposed on the beveled member 151 along its length. The splicing joint 141 is provided with a guide groove. When the splicing base 15 and the splicing joint 141 are wedge-shaped, the guide strip 152 is embedded in the guide groove, and the beveled member 151 and the splicing joint 141 contact to form a wedge-shaped fit. The guide strip 152 cooperates with the guide groove to prevent the assembly beam 14 from being misaligned with the splicing base 15, and the width of the frame 1 can be adjusted by the assembly beam 14. The splicing joint 141 is provided with a slot for bolts to pass through the slot and connect to the connecting hole 153 for fixing the assembly beam 14.

[0055] Preferably, the splicing base 15 is also provided with a scale line 155. The scale line 155 is set on the guide strip 152 and is used as a width reference during installation, which ensures the consistency of the assembly and improves the installation accuracy.

[0056] In one embodiment, the splicing base 15 includes a beveled member 151, a guide groove 154, and a connecting hole 153. The guide groove 154 and the connecting hole 153 are both disposed on the beveled member 151. When the splicing base 15 and the splicing joint 141 are wedge-shaped engaged, the splicing joint 141 is embedded in the guide groove 154. The guide groove 154 is formed by guide strips installed on both sides of the beveled member 151. The splicing joint 141 can fall into the guide groove 154, restricting longitudinal movement and facilitating installation and width adjustment.

[0057] Preferably, the first longitudinal beam 11, the second longitudinal beam 12, and the first and second support beams 21 and 22 that make up the movable crossbeam 2 are all made of steel and formed by cold bending process, which has high dimensional accuracy and high surface hardness. Their cross sections are all provided with open sections to ensure the accuracy of forming and reduce the forming cost. Compared with aluminum profiles, steel has the advantages of load-bearing capacity, strength, less deformation due to temperature, and lower cost, which meets the requirements of high precision machining. The first beam wall 211 of the first support beam 21 and the second beam wall 221 of the second support beam 22 are both thin-walled steel parts, which achieves lightweighting of components while ensuring load-bearing capacity.

[0058] Preferably, exhaust holes 116 are provided on the opposite side walls of the first longitudinal beam 11 and the second longitudinal beam 12. The exhaust holes 116 are used to draw away the smoke and dust during processing after connecting to a fan. Baffles are provided at the open ends of the first longitudinal beam 11 and the second longitudinal beam 12 to improve the resistance to deformation.

[0059] Preferably, support feet 16 are provided on the bottom surfaces of the first longitudinal beam 11 and the second longitudinal beam 12 for adjusting the height off the ground.

[0060] Example 2

[0061] This embodiment also discloses a laser cutting machine, including a bed structure of an assembled machine tool, a laser cutting head 4, and several toothed plates 3. The laser cutting head 4 is disposed on the bed structure of the assembled machine tool. Specifically, the laser cutting head 4 is mounted on a moving crossbeam 2. Several toothed plates 3 are connected side by side and then mounted on a frame 1. Each toothed plate 3 includes multiple racks 31, a transverse connecting member 32, a support base 33, and a positioning plate 34. The multiple racks 31 are spaced apart, and both ends of the multiple racks 31 overlap the support base 33. The positioning plate 34 fixes the multiple racks 31 to the support base 33. The transverse connecting member 32 is disposed at the bottom of the multiple racks 31 in a direction parallel to the support base 33.

[0062] Furthermore, the transverse connecting parts 32 on different toothed plates 3 are connected, and the two ends of the toothed plates 3 are installed on the receiving part 112. They can be installed according to processing requirements and the laying area of ​​the toothed plates 3 can be flexibly allocated. Several slots are provided on the support base 33, and the end of the toothed rack 31 cooperates with the slots so that the teeth on the toothed rack 31 face upward.

[0063] Preferably, the open sections of each beam can be sealed by welding.

[0064] Preferably, the laser cutting head 4 includes a lifting platform and a laser head, and the focus of the laser head can be adjusted to facilitate the installation and use of different types of laser heads.

[0065] Example 3

[0066] This embodiment also discloses a laser cutting machine assembly method for assembling and using a laser cutting machine, including the following steps:

[0067] S1. Place the first longitudinal beam 11 and the second longitudinal beam 12 on a flat ground, aligning the two ends of the first longitudinal beam 11 and the second longitudinal beam 12 and setting a gap between them.

[0068] S2. Take the assembly beam 14, place the splicing joints 141 at both ends of the assembly beam 14 onto the splicing seat 15 to form a wedge fit, adjust the depth of the wedge fit to fix the distance between the first longitudinal beam 11 and the second longitudinal beam 12, then fix the assembly beam 14 onto the first longitudinal beam 11 and the second longitudinal beam 12, and install the remaining assembly beams 14 in sequence to make the frame 1 completely fixed.

[0069] S3. Take several toothed plates 3 and install them onto the frame 1, and connect the several toothed plates 3 together;

[0070] S4. Take the movable crossbeam 2 and install it onto the first longitudinal beam 11 and the second longitudinal beam 12, and then install the laser cutting head 4 onto the movable crossbeam 2.

[0071] The specific assembly process is as follows:

[0072] Ensure the ground is level. Place the first longitudinal beam 11 and the second longitudinal beam 12 parallel to each other. Initially set the spacing to the preset value using lines or laser marking. Use a laser rangefinder to calibrate the alignment at both ends. Confirm that the mounting slots 115 of the splicing seats 15 of the two longitudinal beams are mirror-symmetrical, with the receiving part 112 facing inward. Align the splice joint 141 of the assembled beam 14 with the inclined piece 151 of the splicing seat 15 and insert it perpendicular to the ground. Ensure that the guide strip 152 is embedded in the guide groove of the splice joint 141 or the splice joint is embedded in the guide groove 154 without jamming. Adjust the wedge fit depth by hammering or using a hydraulic jack until the longitudinal beam spacing meets the tolerance requirements. Use bolts to lock the assembled beam 14 through the connecting holes 153. Install the remaining assembled beams 14 in sequence, proceeding symmetrically from the middle to both ends to reduce [damage / contamination]. Accumulated error; after installation, check the diagonal length difference and overall flatness of frame 1; arrange multiple racks 31 at equal intervals on support base 33 and fix them with positioning pressure plates 34; then place the toothed plate 3 on the receiving part 112 of the first longitudinal beam 11 and the second longitudinal beam 12, and then connect each transverse connecting piece 32; fix the support base 33 to the longitudinal beam receiving part 112 with bolts; fit the first inclined side 217 of the first support beam 21 and the second support beam 22 together, adjust the beam height, and tighten the bolts; hoist the assembled moving crossbeam 2 onto the longitudinal beam guide rail, which is above the toothed plate 3, and push the moving crossbeam 2 back and forth to ensure smooth sliding; install the laser cutting head 4 on the crossbeam and calibrate the perpendicularity of the optical path to the plane of the toothed plate 3. The above assembly process can be completed by a single person with the help of a lifting device, and the assembly operation is quick.

[0073] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. The bed structure of an assembled machine tool, characterized in that: The assembly includes a frame (1), which includes a first longitudinal beam (11), a second longitudinal beam (12), and an assembly beam (14). The first longitudinal beam (11) and the second longitudinal beam (12) are arranged in parallel opposite directions. The two ends of the assembly beam (14) are detachably connected to the side walls opposite to the first longitudinal beam (11) and the second longitudinal beam (12), respectively. The side walls opposite to the first longitudinal beam (11) and the second longitudinal beam (12) are each provided with a splicing seat (15). The two ends of the assembly beam (14) are provided with splicing joints (141). The splicing seat (15) and the splicing joints (141) are detachably connected by a bevel engagement.

2. The bed structure of the assembled machine tool according to claim 1, characterized in that: It also includes a movable crossbeam (2), which is slidably connected to the first longitudinal beam (11) and the second longitudinal beam (12). The movable crossbeam (2) includes a first main beam (21) and a second main beam (22). The first main beam (21) and the second main beam (22) are stacked by inclined planes to form the movable crossbeam (2). The first main beam (21) and the second main beam (22) are stacked in a direction perpendicular to the ground.

3. The bed structure of the assembled machine tool according to claim 2, characterized in that: The first support beam (21) and the second support beam (22) have the same structure. The cross-section of the first support beam (21) is triangular. The first support beam (21) includes two connected straight sides and a first inclined side (217). A joint opening (216) and a first dead side (215) extending outward along the joint opening (216) are provided on one of the straight sides of the first support beam (21). The first inclined side (217) of the first support beam (21) and the second support beam (22) are in contact with each other.

4. The bed structure of the assembled machine tool according to claim 2, characterized in that: The cross-sections of the first support beam (21) and the second support beam (22) are both quadrilateral and include at least one inclined side. The second inclined side (214) of the first support beam (21) and the third inclined side (224) of the second support beam (22) are in contact. The first support beam (21) has a first joint (213) and a second dead side (212) extending outward along the first joint (213) on the upward side. The third inclined side (224) has an opening groove (223) and a third dead side (222) extending outward along the opening groove (223). The second dead side (212) and the third dead side (222) are respectively located on the two adjacent side walls of the movable crossbeam (2).

5. The bed structure of the assembled machine tool according to claim 1, characterized in that: The first longitudinal beam (11) and the second longitudinal beam (12) are mirror symmetrical in structure. The top wall of the first longitudinal beam (11) is provided with an interface (114) and a fourth dead edge (113) extending outward along the interface (114). The side walls of the first longitudinal beam (11) and the second longitudinal beam (12) are provided with a receiving part (112).

6. The bed structure of the assembled machine tool according to claim 5, characterized in that: The first longitudinal beam (11) and the second longitudinal beam (12) each have a number of mounting slots (115) on their opposite side walls, and a number of splicing seats (15) are arranged in the number of mounting slots (115) in a corresponding manner.

7. The bed structure of the assembled machine tool according to claim 1, characterized in that: The splicing base (15) includes a beveled part (151), a guide strip (152), and a connecting hole (153). The connecting hole (153) is disposed on the beveled part (151). The guide strip (152) is disposed on the beveled part (151) along the length direction of the beveled part (151). The splicing joint (141) is provided with a guide groove. When the splicing base (15) and the splicing joint (141) are wedge-shaped, the guide strip (152) is embedded in the guide groove.

8. The bed structure of the assembled machine tool according to claim 1, characterized in that: The splicing base (15) includes a beveled part (151), a guide groove (154), and a connecting hole (153). The guide groove (154) and the connecting hole (153) are both provided on the beveled part (151). When the splicing base (15) and the splicing joint (141) are wedge-shaped, the splicing joint (141) is embedded in the guide groove (154).

9. A laser cutting machine, characterized in that: The assembly includes the bed structure of the modular machine tool as described in any one of claims 1-8, a laser cutting head (4), and a plurality of toothed plates (3). The laser cutting head (4) is disposed on the bed structure of the modular machine tool. The plurality of toothed plates (3) are connected side by side and installed on the frame (1). The toothed plate (3) includes a plurality of racks (31), a transverse connector (32), a support base (33), and a positioning plate (34). The plurality of racks (31) are spaced apart, and both ends of the plurality of racks (31) overlap the support base (33). The positioning plate (34) fixes the plurality of racks (31) on the support base (33). The transverse connector (32) is disposed at the bottom of the plurality of racks (31) in a direction parallel to the support base (33).

10. A method for assembling a laser cutting machine, wherein the laser cutting machine is the laser cutting machine according to claim 9, characterized in that, Includes the following steps: S1. Place the first longitudinal beam (11) and the second longitudinal beam (12) on a flat ground, aligning the two ends of the first longitudinal beam (11) and the second longitudinal beam (12) with a distance between them; S2. Take the assembly beam (14), place the splicing joints (141) at both ends of the assembly beam (14) onto the splicing seat (15) to form a wedge fit, adjust the depth of the wedge fit to fix the distance between the first longitudinal beam (11) and the second longitudinal beam (12), then fix the assembly beam (14) onto the first longitudinal beam (11) and the second longitudinal beam (12), and install the remaining assembly beams (14) in sequence to make the frame (1) completely fixed; S3. Take the plurality of toothed plates (3) and install them onto the frame (1), and connect the plurality of toothed plates (3); S4. Take the movable crossbeam (2) and install it onto the first longitudinal beam (11) and the second longitudinal beam (12), and then install the laser cutting head (4) onto the movable crossbeam (2).

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