Cutting machine for metal working

Abstract

The application relates to a cutting machine for metal processing and relates to the technical field of metal processing, which comprises a supporting seat, a cutting assembly for cutting a steel grating is arranged at one end of the supporting seat, a pushing cylinder is arranged at the other end of the supporting seat, the setting direction of the pushing cylinder is consistent with the extending direction of the supporting seat, a piston rod of the pushing cylinder is connected with a pushing plate, the pushing plate is slidably connected with the supporting seat, two positioning plates are arranged at the two sides of the supporting seat, the two positioning plates are oppositely arranged, the positioning plates are arranged in extension along the length direction of the supporting seat, two bidirectional screws are arranged in the supporting seat, the two bidirectional screws are respectively threadedly connected with the two positioning plates, the two bidirectional screws are arranged at the two ends of the positioning plates, two driving motors are arranged outside the supporting seat, output shafts of the two driving motors are respectively coaxially fixedly connected with the two bidirectional screws. The application limits the moving direction of the steel grating by additionally arranging the positioning plates, so that the stability of the cutting process is ensured.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to a cutting machine tool for metal processing. Background Technology

[0002] Metal processing often involves steel grating fabrication, and steel grating cutting equipment is a specialized machine used for precise cutting of steel grating. Steel grating is a metal product made by arranging flat steel bars at specific intervals and crossbars, through pressure welding or handcrafting. It is widely used in industrial platforms, stair treads, guardrails, and other fields. Due to its diverse applications, steel grating often requires customized cutting based on specific needs.

[0003] Related technology can be found in patent application CN107297540A, which discloses a multi-specification adjustable steel plate cutting machine, including a base and a steel plate. The base has a front support and a rear support. A front fixed plate is located on the top of the front support, and a rear fixed plate is located on the top of the rear support. A second reduction motor is located on the top left side of the front support, and a first screw is connected to the rear motor shaft. The first screw is rotatably connected to the front and rear fixed plates, and a first spiral seat is connected to the first screw. A third reduction motor is located on the top right side of the front support, and a second screw is connected to the rear motor shaft. The second screw is rotatably connected to the front and rear fixed plates, and a second spiral seat is connected to the second screw. Cutting blades are rotatably connected to the bottom of both the first and second spiral seats. This application is simple to operate and convenient to use. The width of the steel plate cut can be adjusted by rotating the first screw, and the length of the steel plate cut can be adjusted by changing the number of teeth on the drive gear.

[0004] Regarding the aforementioned technologies, when cutting steel grating, certain internal stresses are generated in the steel grating itself. This causes the steel grating to wobble during the cutting process, affecting cutting efficiency and the quality of the finished product. Therefore, there is an urgent need for a metal processing cutting machine tool to solve the above-mentioned technical problems. Summary of the Invention

[0005] To improve cutting efficiency and the quality of finished products, this invention provides a metal cutting machine tool.

[0006] This invention provides a metal cutting machine tool, which adopts the following technical solution: A metal cutting machine tool includes a support base. One end of the support base is provided with a cutting assembly for cutting steel grating, and the other end is provided with a push cylinder. The push cylinder is positioned in the same direction as the extension direction of the support base. The piston rod of the push cylinder is connected to a push plate, which is slidably connected to the support base. Two positioning plates are provided on both sides of the support base, which are arranged opposite to each other and extend along the length of the support base. Two bidirectional screws are provided inside the support base, which are threadedly connected to the two positioning plates respectively. The positioning plates are slidably connected to the support base, and the two bidirectional screws are located at both ends of the positioning plates. Two drive motors are provided on the outside of the support base, and the output shafts of the two drive motors are coaxially fixedly connected to the two bidirectional screws respectively.

[0007] By adopting the above technical solution, when steel grating needs to be cut, the worker places the steel grating on the support base, then starts the drive motor. The drive motor drives the bidirectional screw to rotate, thereby causing the two positioning plates to move towards each other, achieving the operation of clamping the steel grating. Then, the push cylinder is started. Under the limitation of the positioning plates, the push plate of the push cylinder pushes the steel grating to the bottom of the cutting component, thereby realizing the cutting of the steel grating. Under the limiting effect of the positioning plates, the movement direction and movement space of the positioning plates are restricted, thereby preventing the steel grating itself from shaking during the cutting process, thus improving the cutting efficiency and the quality of the finished product.

[0008] Optionally, the cutting assembly includes a lifting platform, a connecting block fixedly connected to the lower end face of the lifting platform, three cutting blades rotatably connected to the connecting block, a cutting motor provided on one side of the connecting block, the output shaft of the cutting motor being coaxially and fixedly connected to the cutting blades, two lifting screws provided on both sides of the support base, the two ends of the lifting platform being threadedly connected to the two lifting screws respectively, a drive wheel provided on the side of the support base away from the drive motor, the drive wheel being coaxially and fixedly connected to the bidirectional screw, a driven wheel provided on the side of the support base near the drive wheel, a chain provided between the drive wheel and the driven wheel, both the drive wheel and the driven wheel meshing with the chain, a linkage shaft provided inside the support base, one end of the linkage shaft being connected to the lifting screw through a bevel gear pair, and the other end being coaxially and fixedly connected to the driven wheel.

[0009] By adopting the above technical solution, when the steel grating needs to be cut using the cutting assembly, the worker starts the drive motor, the drive wheel rotates, the drive wheel drives the driven wheel to rotate, and the driven wheel drives the lifting screw to rotate, thereby lowering the lifting platform. This fixes the position of the steel grating and lowers the cutting blades to put them into working condition. Then, the cutting motor is started, and the cutting motor drives the three cutting blades to start working, realizing the four-part processing of the steel grating, which helps to improve work efficiency.

[0010] Optionally, the lifting platform is provided with connecting frames on both sides. The connecting frames are vertically arranged on the upper surface of the support base. A baffle is slidably connected inside the connecting frame. In the non-working state, the baffle abuts against the support base to block the cutting blade. In the working state, the baffle is located at the upper end of the connecting frame to facilitate observation of the working status of the cutting blade.

[0011] By adopting the above technical solution and setting two states for the baffle, it is easy to observe the working status of the cutting blade when it is working; when the cutting blade finishes its cutting task, the baffle covers it to prevent workers from accidentally touching it, which helps to improve its safety.

[0012] Optionally, a first rack is fixedly connected to the side of the baffle near the lifting platform, and a second rack is fixedly connected to the end of the lifting platform near the baffle. A gear is provided between the first rack and the second rack. A first side plate and a second side plate are provided between the two connecting frames. The first side plate is located at the end of the connecting frame near the push cylinder, and the second side plate is located at the other end. A connecting shaft is provided on the second side plate, and the connecting shaft is coaxially and fixedly connected to the gear.

[0013] By adopting the above technical solution, when cutting steel grating, the operator starts the drive motor, which moves the two positioning plates closer together to determine the movement range of the steel grating. Simultaneously, the lifting platform descends. As the lifting platform descends, the gears and the first and second racks work together to simultaneously raise the baffle, making it easier to observe the working status of the cutting blade. After cutting, the operator starts the drive motor again, moving the two positioning plates apart and raising the lifting platform. As the lifting platform rises, the gears and the first and second racks work together to simultaneously lower the baffle, covering the cutting blade from both sides to prevent the operator from accidentally touching the cutting blade and getting injured, thus improving the safety of the device.

[0014] Optionally, each of the connecting frames is equipped with a pressure sensor at its top, which is located directly above the baffle. An elastic layer is fixedly connected to the top of the baffle, and a protective layer is provided on both positioning plates.

[0015] By adopting the above technical solution, the baffle rises synchronously while the cutting blade descends. Each time a cutting operation is performed, the operator starts the drive motor to synchronously lower the cutting blade to its lowest position. At this time, the elastic layer on the baffle abuts against the pressure sensor, and the protective layer on the positioning plate abuts against the steel grating. The pressure sensor feeds back the pressure value. When the cutting blade is not worn, the pressure value fed back before each cut is basically stable. When the pressure value fed back changes, it indicates that the cutting blade's descent distance has changed, and the cutting blade is worn, causing pressure changes. This allows the operator to replace the blade in a timely manner, which helps improve the stability of the device.

[0016] Optionally, an inspection port is provided on the second side plate, and a hinge plate is provided at the inspection port of the second side plate. The bottom end of the hinge plate is hinged to the side plate, and fixing plates for fixing the position of the hinge plate are provided on both sides of the hinge plate. A support rod is fixedly connected to the bottom end of each fixing plate, and the support rod is hinged to the second side plate.

[0017] By adopting the above technical solution, when the cutting blade needs to be replaced, the staff can open the hinge plate to open the inspection port, which makes it easier for the staff to replace or repair the cutting blade and improves work efficiency.

[0018] Optionally, a handle is fixedly connected to the hinge plate.

[0019] By adopting the above technical solution and setting a handle, it is easy for staff to open the hinge plate to complete the maintenance work, which helps to improve work efficiency.

[0020] Optionally, both ends of the push plate are fixedly connected with protrusions, which are located on the side of the push plate near the cutting component.

[0021] By adopting the above technical solution and setting protrusions, it is possible to avoid the cutting blade accidentally touching the blade push plate, and to provide stable thrust from both sides of the steel grating, which helps to improve the stability of the device.

[0022] Optionally, the positioning plate has through slots on opposite sides, and a bidirectional adjusting screw is provided in the through slot. Two auxiliary plates are threaded to both ends of the bidirectional adjusting screw. A sliding wheel is coaxially fixedly connected to the bidirectional adjusting screw, and the sliding wheel abuts against the upper end face of the support base. Two auxiliary rollers are provided on the side of the auxiliary plate away from the positioning plate.

[0023] Optionally, the auxiliary plate is provided with a connecting frame on the side near the positioning plate. The connecting frame is threadedly connected to the bidirectional adjusting screw. The auxiliary plate is located inside the connecting frame. A reset spring is provided between the auxiliary plate and the connecting frame. A moving wheel is provided on the side of the auxiliary plate near the positioning plate. The moving wheel meshes with the auxiliary plate. A connecting roller is provided between the auxiliary roller and the moving wheel. The connecting roller meshes with both the moving wheel and the auxiliary roller. The diameter of the moving wheel is smaller than the diameter of the auxiliary roller.

[0024] In summary, the present invention has at least one of the following beneficial technical effects: 1. By setting up a support base, cutting assembly, push cylinder, push plate, positioning plate, bidirectional screw, and drive motor, when steel grating needs to be cut, the worker places the steel grating on the support base, then starts the drive motor, which drives the bidirectional screw to rotate, thereby causing the two positioning plates to move towards each other, achieving the operation of clamping the steel grating. Then, the push cylinder is started, and the push plate of the push cylinder, under the limit of the positioning plate, pushes the steel grating to the bottom of the cutting assembly, thereby achieving the cutting of the steel grating. Under the limiting effect of the positioning plate, the movement direction and movement space of the positioning plate are restricted, thereby preventing the steel grating itself from shaking during the cutting process, thus improving cutting efficiency and the quality of the finished product; 2. By setting up a lifting platform, connecting block, cutting blade, cutting motor, lifting screw, drive wheel, driven wheel, and linkage shaft, when the steel grating needs to be cut using the cutting assembly, the worker starts the drive motor, the drive wheel rotates, the drive wheel drives the driven wheel to rotate, and the driven wheel drives the lifting screw to rotate, thereby lowering the lifting platform to fix the position of the steel grating and lowering the cutting blade to put it into working condition. Then, the cutting motor is started, and the cutting motor drives the three cutting blades to start working, realizing the four-part processing of the steel grating, which helps to improve work efficiency. 3. By setting protrusions, the cutting blade can be prevented from accidentally hitting the blade push plate, and a stable thrust can be provided from both sides of the steel grating, which helps to improve the stability of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a metal cutting machine tool.

[0026] Figure 2 This is a schematic diagram of the overall structure of a metal cutting machine tool from another perspective.

[0027] Figure 3 This is a cross-sectional structural diagram of a metal cutting machine tool.

[0028] Figure 4 This is a schematic diagram of the internal structure of a metal cutting machine tool.

[0029] Figure 5 yes Figure 4 Enlarged view of section A.

[0030] Figure 6 This is a schematic diagram of the overall structure of a metal processing cutting machine tool according to another embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the overall structure of the auxiliary plate in another embodiment of the present invention.

[0032] Figure 8This is a schematic diagram of the internal structure of the auxiliary plate in another embodiment of the present invention.

[0033] Explanation of reference numerals in the attached drawings: 1. Support base; 2. Conveying assembly; 21. Push cylinder; 22. Protrusion; 23. Push plate; 24. Positioning plate; 241. Protective layer; 242. Bidirectional adjusting screw; 243. Auxiliary plate; 2431. Moving wheel; 2432. Connecting roller; 245. Sliding wheel; 246. Auxiliary roller; 247. Connecting frame; 248. Return spring; 25. Bidirectional screw; 26. Drive motor; 3. Cutting assembly; 31. Lifting platform; 32. Cutting blade; 33. Connecting... 34. Block; 35. Cutting motor; 36. Lifting screw; 37. Drive wheel; 38. Driven wheel; 39. Chain; 40. Linkage shaft; 41. Protective assembly; 42. Connecting frame; 43. First side plate; 44. Second side plate; 45. Inspection port; 46. Hinge plate; 47. Fixing plate; 48. Support rod; 49. Handle; 40. Baffle; 40. Elastic layer; 41. First rack; 42. Second rack; 40. Gear; 41. Connecting shaft; 42. Pressure sensor. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to all the accompanying drawings.

[0035] This invention discloses a metal cutting machine tool.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A metal processing cutting machine tool includes a support base 1, a conveying assembly 2, a cutting assembly 3, and a protective assembly 4. The conveying assembly 2 is disposed at one end of the support base 1, the cutting assembly 3 is disposed at the other end of the support base 1, and the protective assembly 4 is connected to the cutting assembly 3. The conveying assembly 2 transports steel gratings to the cutting assembly 3, the cutting assembly 3 performs the cutting process on the steel gratings, and the protective assembly 4 improves the safety of the equipment.

[0037] Reference Figure 2 and Figure 4The conveying assembly 2 includes a push cylinder 21 and two positioning plates 24. The push cylinder 21 is mounted on the support base 1, and the direction of the push cylinder 21 is consistent with the extension direction of the support base 1. The piston rod of the push cylinder 21 is connected to a push plate 23, and the push plate 23 is slidably connected to the support base 1. The two positioning plates 24 are mounted on both sides of the support base 1, and the two positioning plates 24 are arranged opposite to each other. The positioning plates 24 extend along the length direction of the support base 1. The support base 1 is provided with two bidirectional screws 25, which are threadedly connected to the two positioning plates 24 respectively. The positioning plates 24 are slidably connected to the support base 1. The two bidirectional screws 25 are located at both ends of the positioning plates 24. The outside of the support base 1 is provided with two drive motors 26, and the output shafts of the two drive motors 26 are coaxially fixedly connected to the two bidirectional screws 25 respectively.

[0038] Reference Figure 2 and Figure 4 When steel grating needs to be cut, the worker places the steel grating on the support base 1, and then starts the drive motor 26. The drive motor 26 drives the bidirectional screw 25 to rotate, thereby causing the two positioning plates 24 to move towards each other, realizing the operation of clamping the steel grating. Then, the push cylinder 21 is started. Under the limitation of the positioning plates 24, the push plate 23 of the push cylinder 21 pushes the steel grating to the bottom of the cutting component 3, thereby realizing the cutting of the steel grating. Under the limitation of the positioning plates 24, the movement direction and movement space of the positioning plates 24 are restricted, thereby preventing the steel grating itself from shaking during the cutting process, thus improving the cutting efficiency and the quality of the finished product.

[0039] Reference Figure 1 and Figure 3 Both ends of the push plate 23 are fixedly connected with protrusions 22, which are located on the side of the push plate 23 closest to the cutting assembly 3. By setting the protrusions 22, it is possible to prevent the cutting blade 32 from accidentally touching the push plate 23, and it can also provide a stable pushing force from both sides of the steel grating, which helps to improve the stability of the device.

[0040] Reference Figure 3 , Figure 4 and Figure 5The cutting assembly 3 includes a lifting platform 31 and three cutting blades 32. A connecting block 33 is fixedly connected to the lower end face of the lifting platform 31. The three cutting blades 32 are rotatably connected to the connecting block 33. A cutting motor 34 is provided on one side of the connecting block 33. The output shaft of the cutting motor 34 is coaxially and fixedly connected to the cutting blades 32. Two lifting screws 35 are provided on both sides of the support base 1. The two ends of the lifting platform 31 are threadedly connected to the two lifting screws 35 respectively. A drive wheel 36 is provided on the side of the support base 1 away from the drive motor 26. The drive wheel 36 is coaxially and fixedly connected to the bidirectional screw 25. A driven wheel 37 is provided on the side of the support base 1 close to the drive wheel 36. A chain 38 is provided between the drive wheel 36 and the driven wheel 37. Both the drive wheel 36 and the driven wheel 37 are meshed with the chain 38. A linkage shaft 39 is provided inside the support base 1. One end of the linkage shaft 39 is connected to the lifting screw 35 through a bevel gear pair, and the other end is coaxially and fixedly connected to the driven wheel 37.

[0041] Reference Figure 3 , Figure 4 and Figure 5 When the steel grating needs to be cut using the cutting assembly 3, the operator starts the drive motor 26, and the drive wheel 36 rotates. The drive wheel 36 drives the driven wheel 37 to rotate, and the driven wheel 37 drives the lifting screw 35 to rotate, thereby lowering the lifting platform 31. This fixes the position of the steel grating and lowers the cutting blade 32 to put it into working condition. Then, the cutting motor 34 is started, and the cutting motor 34 drives the three cutting blades 32 to start working, realizing the four-part cutting of the steel grating, which helps to improve work efficiency.

[0042] Reference Figure 2 and Figure 4 The protective component 4 includes two connecting frames 41, a first side plate 42, and a second side plate 43. The two connecting frames 41 are respectively disposed on both sides of the lifting platform 31. The connecting frames 41 are vertically disposed on the upper end surface of the support base 1. A baffle 44 is slidably connected inside the connecting frame 41. In the non-working state, the baffle 44 abuts against the support base 1 to block the cutting blade 32. In the working state, the baffle 44 is located at the upper end of the connecting frame 41 to facilitate observation of the working state of the cutting blade 32. A first rack 45 is fixedly connected to the side of the baffle 44 near the lifting platform 31, and a second rack 46 is fixedly connected to the end of the lifting platform 31 near the baffle 44. A gear 47 is provided between the first rack 45 and the second rack 46. The first side plate 42 and the second side plate 43 are disposed between the two connecting frames 41. The first side plate 42 is disposed at the end of the connecting frame 41 near the push cylinder 21, and the second side plate 43 is disposed at the other end. A connecting shaft 48 is provided on the second side plate 43. The connecting shaft 48 is coaxially fixedly connected to the gear 47.

[0043] Reference Figure 2 and Figure 4By setting two states for the baffle 44, it is easy to observe the working status of the cutting blade 32 when it is working; after the cutting task of the cutting blade 32 is completed, the baffle 44 covers the blade to prevent workers from accidentally touching it, thus improving safety. When the steel grating needs to be cut, the worker starts the drive motor 26, which moves the two positioning plates 24 closer together to determine the range of movement of the steel grating. At the same time, the lifting platform 31 is lowered. As the lifting platform 31 is lowered, the baffle 44 is raised simultaneously under the linkage of the gear 47 and the first rack 45 and the second rack 46, thus making it easy to observe the working status of the cutting blade 32. After the cutting is completed, the worker starts the drive motor 26 again, the two positioning plates 24 are moved away from each other, and the lifting platform 31 is raised. As the lifting platform 31 is raised, the baffle 44 is lowered simultaneously under the linkage of the gear 47 and the first rack 45 and the second rack 46, covering the cutting blade 32 from both sides to prevent workers from accidentally touching the cutting blade 32 and getting injured, thus improving the safety of the device.

[0044] Reference Figure 2 and Figure 4 Each connecting frame 41 is equipped with a pressure sensor 49 at its top, positioned directly above a baffle 44. An elastic layer 441 is fixedly connected to the top of the baffle 44, and protective layers 241 are provided on both positioning plates 24. As the cutting blade 32 descends, the baffle 44 rises synchronously. During each cutting operation, the operator starts the drive motor 26, which simultaneously lowers the cutting blade 32 to its lowest position. At this point, the elastic layer 441 on the baffle 44 abuts against the pressure sensor 49, and the protective layer 241 on the positioning plate 24 abuts against the steel grating. The pressure sensor 49 provides feedback on the pressure value. When the cutting blade 32 is not worn, the pressure value before each cut is relatively stable. When the pressure value changes, it indicates that the descent distance of the cutting blade 32 has changed, indicating wear and causing pressure changes. This allows the operator to replace the blade promptly, improving the stability of the device.

[0045] Reference Figure 2 The second side plate 43 has an access port 431, and a hinge plate 432 is provided at the access port 431. The bottom end of the hinge plate 432 is hinged to the side plate. Fixing plates 433 for fixing the position of the hinge plate 432 are provided on both sides of the hinge plate 432. A support rod 434 is fixedly connected to the bottom end of each fixing plate 433. The support rod 434 is hinged to the second side plate 43. A handle 435 is fixedly connected to the hinge plate 432. When the cutting blade 32 needs to be replaced, the operator pulls the handle 435 to open the hinge plate 432, thereby opening the access port 431, facilitating the replacement or repair of the cutting blade 32 and improving work efficiency.

[0046] Reference Figure 6 , Figure 7 and Figure 8 In another embodiment, the positioning plate 24 has through slots on opposite sides, and a bidirectional adjusting screw 242 is provided in the slot. Two auxiliary plates 243 are threaded to both ends of the bidirectional adjusting screw 242. A sliding wheel 245 is coaxially fixedly connected to the bidirectional adjusting screw 242, and the sliding wheel 245 abuts against the upper surface of the support base 1. Two auxiliary rollers 246 are provided on the side of the auxiliary plate 243 away from the positioning plate 24, and a connecting frame 247 is provided on the side of the auxiliary plate 243 closest to the positioning plate 24. 7 is threadedly connected to the bidirectional adjusting screw 242. The auxiliary plate 243 is located inside the connecting frame 247. A return spring 248 is provided between the auxiliary plate 243 and the connecting frame 247. A moving wheel 2431 is provided on the side of the auxiliary plate 243 near the positioning plate 24. The moving wheel 2431 meshes with the auxiliary plate 243. A connecting roller 2432 is provided between the auxiliary roller 246 and the moving wheel 2431. The connecting roller 2432 meshes with the moving wheel 2431 and the auxiliary roller 246 respectively. The diameter of the moving wheel 2431 is smaller than the diameter of the auxiliary roller 246.

[0047] Reference Figure 6 , Figure 7 and Figure 8 When the positioning plate 24 clamps and fixes the steel grating, the auxiliary roller 246 of the auxiliary plate 243 is directly used to fix the position of the steel grating. Furthermore, when pushing the steel grating forward, the auxiliary roller 246 assists in its movement, preventing movement within a limited position and thus protecting the material of the steel grating. Simultaneously, during the fixing process, the sliding wheel 245 rotates, driving the bidirectional adjusting screw 242 to rotate, thereby moving the two auxiliary plates 243 and adjusting the distance between them to accommodate the cutting of different types of steel grating. This also facilitates the forward pushing of the steel grating. Simultaneously with the cutting of the steel grating, the auxiliary roller 246 rotates, which in turn drives the connecting roller 2432 to rotate. The connecting roller 2432 then drives the moving wheel 2431 to rotate, thereby moving the auxiliary plate 243 forward a certain distance to follow the steel grating. This prevents the steel grating from losing its fixation and shifting during the cutting process, thus affecting the cutting effect. The different wheel diameters ensure that the displacement distance of the auxiliary plate 243 is always less than the movement distance of the steel grating, ensuring the stability of its following process. After cutting, the auxiliary plate 243 will reset under the action of the return spring 248, which helps to improve the stability of the cutting process.

[0048] The implementation principle of a metal processing cutting machine tool according to an embodiment of the present invention is as follows: When cutting steel grating, the operator starts the drive motor 26, which drives the bidirectional screw 25 to rotate, thereby causing the two positioning plates 24 to move towards each other, thus clamping the steel grating. Then, the push cylinder 21 is started. Under the limit of the positioning plates 24, the push plate 23 of the push cylinder 21 pushes the steel grating to the bottom of the cutting assembly 3. At the same time, the drive motor 26 also drives the drive wheel 36 to rotate, which drives the driven wheel 37 to rotate. The driven wheel 37 drives the lifting screw 35 to rotate, thereby lowering the lifting platform 31, fixing the position of the steel grating and lowering the cutting blade 32 to put it into working state. Then, the cutting motor 34 is started, which drives the three cutting blades 32 to start working, realizing the four-part processing of the steel grating, which is beneficial to improving work efficiency.

[0049] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A metal cutting machine tool, comprising a support base (1), characterized in that: One end of the support base (1) is provided with a cutting assembly (3) for cutting steel grating, and the other end is provided with a push cylinder (21). The push cylinder (21) is set in the same direction as the extension direction of the support base (1). The piston rod of the push cylinder (21) is connected to a push plate (23). The push plate (23) is slidably connected to the support base (1). Two positioning plates (24) are provided on both sides of the support base (1). The two positioning plates (24) are arranged opposite to each other. The positioning plates (24) extend along the length direction of the support base (1). Two bidirectional screws (25) are provided inside the support base (1). The two bidirectional screws (25) are threadedly connected to the two positioning plates (24) respectively. The positioning plates (24) are slidably connected to the support base (1). The two bidirectional screws (25) are set at both ends of the positioning plates (24). Two drive motors (26) are provided on the outside of the support base (1). The output shafts of the two drive motors (26) are coaxially fixedly connected to the two bidirectional screws (25) respectively.

2. The metal cutting machine tool according to claim 1, characterized in that, The cutting assembly (3) includes a lifting platform (31), a connecting block (33) is fixedly connected to the lower end face of the lifting platform (31), three cutting blades (32) are rotatably connected to the connecting block (33), a cutting motor (34) is provided on one side of the connecting block (33), the output shaft of the cutting motor (34) is coaxially fixedly connected to the cutting blades (32), two lifting screws (35) are provided on both sides of the support base (1), the two ends of the lifting platform (31) are threadedly connected to the two lifting screws (35) respectively, and the support base (1) is away from the drive motor (26). One side of the support base (1) is provided with a drive wheel (36), which is coaxially fixedly connected to the bidirectional screw (25). The side of the support base (1) near the drive wheel (36) is provided with a driven wheel (37). A chain (38) is provided between the drive wheel (36) and the driven wheel (37). Both the drive wheel (36) and the driven wheel (37) are meshed with the chain (38). The support base (1) is provided with a linkage shaft (39). One end of the linkage shaft (39) is connected to the lifting screw (35) through a bevel gear pair, and the other end is coaxially fixedly connected to the driven wheel (37).

3. A metal cutting machine tool according to claim 2, characterized in that, The lifting platform (31) is provided with connecting frames (41) on both sides. The connecting frames (41) are vertically set on the upper surface of the support base (1). A baffle (44) is slidably connected inside the connecting frame (41). In the non-working state, the baffle (44) abuts against the support base (1) to block the cutting blade (32). In the working state, the baffle (44) is located at the upper end of the connecting frame (41) to facilitate observation of the working state of the cutting blade (32).

4. A metal cutting machine tool according to claim 3, characterized in that, A first rack (45) is fixedly connected to the side of the baffle (44) near the lifting platform (31), and a second rack (46) is fixedly connected to the end of the lifting platform (31) near the baffle (44). A gear (47) is provided between the first rack (45) and the second rack (46). A first side plate (42) and a second side plate (43) are provided between the two connecting frames (41). The first side plate (42) is located at one end of the connecting frame (41) near the push cylinder (21), and the second side plate (43) is located at the other end. A connecting shaft (48) is provided on the second side plate (43), and the connecting shaft (48) is coaxially fixedly connected to the gear (47).

5. A metal cutting machine tool according to claim 4, characterized in that, The top of each connecting frame (41) is provided with a pressure sensor (49), which is located directly above the baffle (44). The top of the baffle (44) is fixedly connected with an elastic layer (441), and both positioning plates (24) are provided with a protective layer (241).

6. A metal cutting machine tool according to claim 4, characterized in that, The second side plate (43) has an inspection port (431). A hinge plate (432) is provided at the inspection port (431) of the second side plate (43). The bottom end of the hinge plate (432) is hinged to the side plate. Fixing plates (433) for fixing the position of the hinge plate (432) are provided on both sides of the hinge plate (432). A support rod (434) is fixedly connected to the bottom end of each fixing plate (433). The support rod (434) is hinged to the second side plate (43).

7. A metal cutting machine tool according to claim 6, characterized in that, A handle (435) is fixedly connected to the hinge plate (432).

8. A metal cutting machine tool according to claim 1, characterized in that, Both ends of the push plate (23) are fixedly connected with protrusions (22), and the protrusions (22) are located on the side of the push plate (23) close to the cutting component (3).

9. A metal cutting machine tool according to claim 1, characterized in that, The positioning plate (24) has through slots on opposite sides, and a bidirectional adjusting screw (242) is provided in the through slot. Two auxiliary plates (243) are threaded to both ends of the bidirectional adjusting screw (242). A sliding wheel (245) is coaxially fixedly connected to the bidirectional adjusting screw (242). The sliding wheel (245) abuts against the upper end face of the support base (1). Two auxiliary rollers (246) are provided on the side of the auxiliary plate (243) away from the positioning plate (24).

10. A metal cutting machine tool according to claim 9, characterized in that, The auxiliary plate (243) is provided with a connecting frame (247) on the side near the positioning plate (24). The connecting frame (247) is threadedly connected to the bidirectional adjusting screw (242). The auxiliary plate (243) is located inside the connecting frame (247). A return spring (248) is provided between the auxiliary plate (243) and the connecting frame (247). The auxiliary plate (243) is provided with a moving wheel (2431) on the side near the positioning plate (24). The moving wheel (2431) meshes with the auxiliary plate (243). A connecting roller (2432) is provided between the auxiliary roller (246) and the moving wheel (2431). The connecting roller (2432) meshes with the moving wheel (2431) and the auxiliary roller (246) respectively. The diameter of the moving wheel (2431) is smaller than the diameter of the auxiliary roller (246).

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