A steel structure milling machine

Abstract

This invention relates to the technical field of steel structure processing, specifically a steel structure milling machine, including a worktable, a middle platform and side platforms mounted on top of the worktable, and a first and second panel mounted on the platforms via first and second shock-absorbing pads, respectively. The worktable has an isosceles trapezoidal cross-section, with a chip removal groove at the top and a collection frame inside. The second panel has a placement platform at the top, inside which a clamping assembly drives a clamping plate to move to clamp the workpiece. During operation, the clamping assembly pushes the chips falling into the placement platform along an internal inclined plate through the chip removal port, effectively preventing chip accumulation and jamming. Vibration is reduced by the first and second shock-absorbing pads, and the processing vibration causes chips on the table surface to automatically fall along the inclined surface into the chip removal groove and into the collection frame for centralized processing. This invention solves the problems of chip intrusion into transmission components and inconvenient cleaning in traditional milling machines, improving equipment reliability and operational continuity.

Description

Technical Field

[0001] This invention relates to the technical field of steel structure processing, specifically a steel structure milling machine. Background Technology

[0002] In the field of steel structure manufacturing, edge milling is a crucial pretreatment step. After cutting, steel often has burrs, oxide layers, or irregular shapes on its edges, which directly affect the quality and precision of subsequent welding and assembly. Therefore, high-precision milling equipment is needed to cut the edges of steel components to obtain flat, smooth, and accurately angled bevels or straight edges, thereby ensuring the overall strength, connection reliability, and engineering safety of the steel structure. With the increasingly widespread and large-scale application of steel structures in construction, bridges, heavy equipment, and other fields, the demand for efficient and high-quality edge milling continues to grow.

[0003] Currently, existing milling machines typically employ the following workpiece clamping mechanism: a movable clamping plate is mounted on a placement table (workbench), and a drive structure such as a screw or lead screw moves the clamping plate to clamp and fix the steel workpiece from the side. To accommodate this drive structure (such as a screw) and its transmission components, a long, narrow slot is usually provided on the placement table. However, during milling, a large amount of metal debris is inevitably generated. This flying debris easily falls into the slot containing the drive structure, making it difficult to clean. Long-term accumulation can lead to wear and jamming of the drive mechanism, and even damage to the transmission threads, severely affecting clamping accuracy, equipment lifespan, and operational reliability. Furthermore, after processing, the debris accumulated on the workbench needs to be manually cleaned by the operator, a tedious process that interrupts processing, reduces work efficiency, and does not meet the requirements of modern production lines for automation and clean production.

[0004] In summary, existing milling machines have significant shortcomings in terms of chip protection and cleaning, and there is an urgent need for an improved solution that can effectively prevent chips from entering key moving parts and facilitate the cleaning of the work area. Summary of the Invention

[0005] The purpose of this invention is to provide a steel structure milling machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A steel structure milling machine includes a worktable, a central platform mounted at the top center of the worktable, and mirror-symmetrically distributed side platforms mounted on both sides of the top of the worktable. A first panel is mounted on the top of the side platforms, and a first shock-absorbing pad is clamped between the side platforms and the first panel. The side of the two first panels that are close to each other is an inclined surface. A second panel is mounted on the top of the central platform, and a second shock-absorbing pad is clamped between the central platform and the second panel. A placement platform is mounted on the top of the second panel, and the longitudinal section of the placement platform is an isosceles trapezoid. A collection frame is provided inside the worktable, and a chip removal groove is provided at the top of the worktable between the first and second panels.

[0008] A movable component is mounted on the top of the first panel, and a milling component is mounted on the movable component. The movable component is used to adjust the position of the milling component.

[0009] Several clamping components are arranged along the length of the placement platform. The bottom of the front and rear ends of the placement platform are provided with chip discharge ports. When the clamping components are in operation, they can drive the debris in the placement platform to be discharged from the chip discharge ports.

[0010] Both ends of the side platform and both ends of the middle platform can be detachably installed with damage reduction connectors. One end of the first shock-absorbing pad and one end of the first panel can be detachably installed on the damage reduction connector at the corresponding position. One end of the second shock-absorbing pad and one end of the second panel can be detachably installed on the damage reduction connector at the corresponding position.

[0011] As a further embodiment of the present invention: the moving component includes a track frame, a crossbar plate, and an angle adjustment plate. A one-way threaded rod is rotatably connected inside the track frame. A first driving member is installed on the outer wall of one end of the track frame. The output end of the first driving member is connected to one end of the one-way threaded rod. A slider is threadedly connected to the one-way threaded rod. A crossbar plate is installed at the top of the slider. An angle adjustment plate is installed at the end of the crossbar plate near the placement platform. The milling component is installed on the angle adjustment plate.

[0012] As a further embodiment of the present invention: the angle adjustment plate is right-angled, and a slot is provided at the center of the top of the angle adjustment plate. The inner bottom surface of the angle adjustment plate is rotatably connected to the bottom end of the first mounting sleeve through a first rotating connector. A second mounting sleeve is rotatably connected in the slot. A telescopic component is installed in the second mounting sleeve. One end of the telescopic component is rotatably connected to the top end of the first mounting sleeve through a second rotating connector. The milling assembly is installed in the first mounting sleeve.

[0013] As a further embodiment of the present invention: the interior of the placement platform is divided into an active cavity and an installation cavity located on both sides of the active cavity by two symmetrically distributed partitions. A ramp plate is installed on the inner bottom surface of the active cavity. The top of the ramp plate is a slope that gradually slopes downward from the middle towards the front and rear ends. The end of the ramp plate extends into the chip discharge port.

[0014] As a further embodiment of the present invention: the clamping assembly includes sliding plates, a bidirectional threaded rod, and a track rod symmetrically distributed on both sides of the movable cavity. The bidirectional threaded rod is laterally rotatably connected to the movable cavity, and the track rod is laterally fixedly connected to the movable cavity. One end of the two sliding plates is symmetrically and threadedly connected to the bidirectional threaded rod, and the other end of the two sliding plates is symmetrically and interlockingly connected to the track rod. A second driving member is installed on the inner wall of the mounting cavity. The output end of the second driving member is connected to one end of the bidirectional threaded rod. The bottom end of the sliding plate is slidably attached to the top end of the ramp plate. A mounting block is provided at the top end of the sliding plate, and a clamping plate is installed at the top end of the mounting block.

[0015] As a further embodiment of the present invention: the top of the workbench is provided with a movable groove corresponding to the position of the mounting block, the mounting block is slidably disposed in the movable groove, the top of the mounting block is flush with the top of the placement table, the length of the clamping plate is greater than the width of the movable groove, and the bottom end of the clamping plate is slidably attached to the top of the placement table.

[0016] As a further embodiment of the present invention: the lower part of the clamping plate is L-shaped, and anti-slip pads are installed on the side of the two clamping plates that are close to each other.

[0017] As a further embodiment of the present invention: both sides of the side platform are provided with first embedding grooves, one end of the damage reduction connector is installed in the first embedding groove, both sides of the first shock-absorbing pad are integrally formed with plate-shaped vertical edges, both sides of the first platform are integrally formed with side sealing plates, and the bottom of the side sealing plates is installed at the other end of the damage reduction connector.

[0018] As a further embodiment of the present invention: the damage reduction connector includes a horizontal plate and a first vertical plate and a second vertical plate integrally formed at both ends of the horizontal plate. The first vertical plate is installed in a first embedding groove by a first bolt. The top end of the plate-shaped vertical edge is provided with a second embedding groove. The upper part of the second vertical plate is inserted into the second embedding groove. The side sealing plate is connected to the second vertical plate by a second bolt.

[0019] As a further embodiment of the present invention: the second shock-absorbing pad, the second platform, and the middle platform adopt the same structure and installation method as the first shock-absorbing pad, the first platform, and the side platform, and are connected with the corresponding damage reduction connectors.

[0020] The present invention has the following advantages:

[0021] 1. This milling machine features a placement platform with an internal cavity structure, which is linked to the operation of the clamping assembly. The placement platform contains a ramp plate, and the key moving parts of the clamping assembly, such as the bidirectional threaded rod, track rod, and sliding plate that drive the movement of the clamping plate, are all housed within the movable cavity above the ramp plate inside the placement platform. When the clamping assembly operates to drive the sliding plate and clamping plate to clamp or release the steel structure, the bottom of the sliding plate slides along the inclined surface of the ramp plate. This design not only fulfills the workpiece clamping function but also cleverly pushes and collects debris that might fall into the placement platform through the gaps in the movable slots towards the low-lying area at the bottom of the ramp plate. Chip discharge ports at the front and rear ends of the placement platform allow these collected chips to be easily discharged by gravity or during subsequent cleaning. This fundamentally changes the situation in the prior art where the drive structure (such as the screw) is exposed in the movable slot of the worktable and is susceptible to damage from debris. By placing the core transmission components in a relatively enclosed protective space with self-deflection capabilities, it effectively solves the problems of wear, jamming, and loss of precision caused by debris, and greatly improves the reliability and service life of the clamping mechanism.

[0022] 2. Through a multi-layered, integrated shock absorption and chip collection structure design, efficient automatic cleaning of the worktable surface is achieved. The worktable itself adopts an isosceles trapezoidal cross-section design, with a chip removal groove and a built-in collection frame at its top between the first and second panels, forming a complete chip collection channel. More importantly, a first shock-absorbing pad is installed between the side platform and the first panel, and a second shock-absorbing pad is installed between the middle platform and the second panel. These two layers of shock-absorbing pads not only effectively absorb the vibration generated during milling, improving machining accuracy and equipment stability, but their elastic properties also cause the first panel, second panel, and placement platform connected to them to generate moderate micro-vibrations during machining. This controlled vibration effect can continuously "shake off" the milling chips that fall on the worktable surface (especially the placement platform and the inclined surface of the first panel), causing them to slide along the inclined surface of the first panel or directly into the chip removal groove through the gaps, and finally into the collection frame. This mechanism enables real-time, automatic guided collection of debris during processing, completely eliminating the inconvenience of frequent manual shutdowns for cleaning the work surface in the previous technology, significantly improving the continuity and cleanliness of operations, and meeting the needs of automated production.

[0023] 3. By setting up a damping connector, the first and second vertical plates of the damping connector are connected to the side platform and the first panel (or the middle platform and the second panel) respectively. This indirect connection breaks the rigid connection between the panel and the platform. This design has two beneficial effects: First, it effectively isolates the vibration transmission path, so that the vibration generated by the first and second panels during processing will not be directly transmitted to the side platform and the middle platform. This allows the first and second damping pads to fully exert their buffering and damping effects, improving the stability and accuracy of milling and enhancing the effect of vibration-assisted chip removal. Second, it actively guides and confines the stress concentration and metal fatigue effect caused by long-term vibration loads to the detachable and independent component of the damping connector. After long-term use, the structural fatigue damage that may occur is mainly concentrated in the damping connector itself, while the side platform, the middle platform, and the first and second panels, which are the main supporting structures, are effectively protected, greatly extending their service life. When maintenance is required, only the worn shock-absorbing pads and wear-reducing connectors need to be replaced. There is no need for complex repairs or replacements of the main structural components, which greatly reduces the long-term maintenance costs and difficulties of the equipment and improves the sustainable use of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall external structure of an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the workbench in an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the moving component and the angle adjustment plate in an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the internal structure of the placement platform in an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram showing the positional relationship between the ramp plate and the sliding plate in an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the side platform structure in an embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the intermediate platform in an embodiment of the present invention.

[0031] Figure 8 for Figure 6 Enlarged diagram of part A in the image.

[0032] In the diagram: 1. Workbench; 101. Opening door; 102. Control box; 103. Chip removal trough; 104. Collection frame; 2. Side platform; 201. First embedding groove; 202. First mounting hole; 3. First shock-absorbing pad; 301. Plate-shaped vertical edge; 302. Second embedding groove; 4. First table panel; 401. Side sealing plate; 402. Second mounting hole; 5. Moving component; 501. Track frame; 502. One-way threaded rod; 503. First driving component; 504. Slider; 505. Horizontal frame plate; 506. Angle adjustment plate; 507. First mounting sleeve; 508. Groove; 509. Second mounting sleeve; 510. Telescopic component; 511. First rotating connector; 512. Second rotating connector; 6. Middle platform; 7. 8. Second damping pad; 9. Second platform panel; 10. Placement platform; 11. Partition plate; 12. Movable cavity; 13. Mounting cavity; 14. Inclined plate; 15. Movable groove; 16. Chip discharge port; 17. Clamping assembly; 18. Sliding plate; 19. Bidirectional threaded rod; 10. Second driving component; 10. Track rod; 11. Mounting block; 12. Clamping plate; 13. Anti-slip pad; 14. Milling assembly; 15. Third driving component; 16. Milling head; 17. Damage reduction connector; 18. Horizontal plate; 19. First vertical plate; 10. Second vertical plate; 10. Third mounting hole; 11. Fourth mounting hole; 12. First bolt; 13. Second bolt. Detailed Implementation

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0035] Example: Please refer to Figures 1 to 7A steel structure milling machine includes a worktable 1. A central support 6 is mounted at the top center of the worktable 1, and mirror-symmetrically distributed side supports 2 are mounted on both sides of the top. The worktable 1 has a collection frame 104 for collecting debris inside, with an opening and closing door 101 at its front end for the collection frame 104 to enter and exit. The opening and closing door 101 can be installed via hinges or sliding rails for easy opening and closing. At the top of the worktable 1, between the first panel 4 and the second panel 8, a chip removal groove 103 is arranged around the worktable. The cross-section of the chip removal groove 103 is typically U-shaped or V-shaped to facilitate the sliding of debris.

[0036] The first panel 4 is mounted on the top of the side platform 2 via a first damping pad 3. The first damping pad 3 is made of elastic material such as high-damping rubber or polyurethane, and is clamped between the side platform 2 and the first panel 4, and fixed by bolt preload. The side of the two first panels 4 that are close to each other is machined into an inclined surface, which helps to guide the debris to slide off. The second panel 8 is mounted on the top of the middle platform 6 via a second damping pad 7, and a placement platform 9 is fixedly mounted on the top of the second panel 8. The material and installation method of the second damping pad 7 are the same as those of the first damping pad 3. The placement platform 9 is usually made of wear-resistant steel plate, and the longitudinal section of the placement platform 9 is an isosceles trapezoid. Several sets of clamping components 10 are arranged along the length of the placement platform 9 for fixing the workpiece. The bottom of the front and rear ends of the placement platform 9 are machined with chip discharge ports 906 for discharging internal debris.

[0037] A movable component 5 is bolted to the top of the first panel 4, and a milling component 11 is mounted on the movable component 5. The movable component 5 is used to drive the milling component 11 to perform multi-position adjustments. Specifically, the movable component 5 includes a track frame 501, a crossbar plate 505, and an angle adjustment plate 506. A one-way threaded rod 502 is rotatably connected to the track frame 501 through a bearing seat. A first driving component 503 (such as a servo motor or stepper motor) is fixed to the outer wall of one end of the track frame 501 through a mounting plate. The output end of the first driving component 503 is connected to one end of the one-way threaded rod 502 through a coupling. A slider 504 is threadedly connected to the one-way threaded rod 502, and the top end of the slider 504 is bolted to the crossbar plate 505. An angle adjustment plate 506 is bolted or welded to the end of the crossbar plate 505 near the placement platform 9. A lifting column can be installed between the crossbar plate 505 and the slider 504 to further improve the position adjustment effect of the milling component 11.

[0038] The angle adjustment plate 506 is right-angled, with a slot 508 machined at the center of its top. The inner bottom surface of the angle adjustment plate 506 is rotatably connected to the bottom end of the first mounting sleeve 507 via a first rotating connector 511 (such as a hinge or shaft). A second mounting sleeve 509 is rotatably connected to the slot 508 via a bearing, and a telescopic component 510 (such as a hydraulic cylinder, pneumatic cylinder, or electric push rod) is fixedly installed in the second mounting sleeve 509. The piston rod or push rod end of the telescopic component 510 is rotatably connected to the top end of the first mounting sleeve 507 via a second rotating connector 512 (such as a ball joint or U-joint). The milling assembly 11 includes a third drive component 1101 (such as a servo motor or stepper motor) and a milling head 1102 installed at the output end of the third drive component 1101. The third drive component 1101 is installed in the first mounting sleeve 507 via a flange or locking sleeve.

[0039] The interior of the placement platform 9 is divided into a central movable cavity 902 and mounting cavities 903 located on both sides of the movable cavity 902 by two symmetrically welded partitions 901. A ramp plate 904 is fixedly installed on the inner bottom surface of the movable cavity 902. The top of the ramp plate 904 is a slope that gradually slopes downward from the middle towards the front and rear ends. The lower end of the ramp plate 904 extends to and slightly beyond the chip discharge port 906 to ensure smooth chip discharge.

[0040] The clamping assembly 10 includes sliding plates 1001, a bidirectional threaded rod 1002, and a track rod 1004 symmetrically distributed on both sides of the movable cavity 902. The bidirectional threaded rod 1002 is laterally rotatably connected to the movable cavity 902 via bearings, and the track rod 1004 is laterally fixedly connected to the movable cavity 902 via supports and is parallel to the bidirectional threaded rod 1002. One end of each of the two sliding plates 1001 is symmetrically and threadedly connected to the bidirectional threaded rod 1002 via threaded holes, and the other end of each sliding plate 1001 is symmetrically and interlockingly connected to the track rod 1004 via linear bearings or sliding sleeves. A second drive component 1003 (such as a servo motor) is mounted on the inner wall of the mounting cavity 903 via a motor mount, and the output end of the second drive component 1003 is connected to one end of the bidirectional threaded rod 1002 via a coupling. A wear-resistant slider is machined or installed at the bottom end of each sliding plate 1001, which slides and fits against the top end of the ramp plate 904. A mounting block 1005 is welded or bolted to the top of the sliding plate 1001, and a clamping plate 1006 is bolted to the top of the mounting block 1005. A movable groove 905 is machined at the top of the worktable 1 at a position corresponding to the mounting block 1005. The mounting block 1005 is slidably disposed within the movable groove 905, and its top is machined to be flush with the top of the placement table 9. The length of the clamping plate 1006 is greater than the width of the movable groove 905, and the bottom end of the clamping plate 1006 slides against the top plane of the placement table 9, thereby scraping away debris from the table surface during movement. The lower part of the clamping plate 1006 is L-shaped to enhance structural rigidity, and anti-slip pads 1007 (such as polyurethane or rubber pads) are installed on the adjacent sides of the two clamping plates 1006 by adhesive or screws.

[0041] Combination Figure 1 , Figure 6 , Figure 7 , Figure 8 Both sides of the side platform 2 are machined with first embedding grooves 201, and one end of the damage reduction connector 12 is installed in the first embedding groove 201. The first shock-absorbing pad 3 has plate-shaped vertical edges 301 integrally formed on both sides, and the first platform 4 has side sealing plates 401 integrally formed on both sides, with the bottom of the side sealing plates 401 installed at the other end of the damage reduction connector 12.

[0042] The damage reduction connector 12 includes a horizontal plate 1201 and a first vertical plate 1202 and a second vertical plate 1203 integrally formed at both ends of the horizontal plate 1201. These three components are typically made of bent or cast steel plates. The first vertical plate 1202 is installed in the first embedding groove 201 by a first bolt 13. A second embedding groove 302 is machined at the top of the plate-shaped vertical edge 301. The upper part of the second vertical plate 1203 is inserted into the second embedding groove 302 for positioning. The side sealing plate 401 is connected to the second vertical plate 1203 by a second bolt 14, thereby pressing and fixing the ends of the first shock-absorbing pad 3 and the first platform 4 together. The second shock-absorbing pad 7, the second platform 8, and the intermediate platform 6 adopt the same structure and installation method as the first shock-absorbing pad 3, the first platform 4, and the side platform 2, and are connected by corresponding damage reduction connectors 12, realizing a modular and detachable shock-absorbing installation structure.

[0043] The workbench 1 is equipped with a control box 102, which integrates a programmable logic controller (PLC) or CNC system, electrical drive modules, and a human-machine interface. Operators can set and adjust various processing parameters and send control commands via buttons, knobs, or a touchscreen on its panel. Specifically, the control box 102, according to a preset program or real-time commands, outputs precise power and control signals to the first drive component 503 (controlling the longitudinal feed of the milling assembly 11), the second drive component 1003 (controlling the clamping and releasing of the clamping assembly 10), the telescopic component 510 (controlling the pitch angle of the milling assembly 11), and the third drive component 1101 (controlling the rotational speed and start / stop of the milling head 1102) through corresponding electrical circuits and drive modules. This coordinates the orderly and synchronous operation of each component, thereby achieving fully automated control from automatic workpiece clamping and multi-dimensional milling to automatic release after processing. Simultaneously, the control box 102 typically also has status monitoring and safety protection functions to ensure the reliability and safety of the equipment operation.

[0044] Working Principle: During operation, the steel structure workpiece to be processed is first placed on top of the placement table 9. Then, the clamping assembly 10 is activated via the control box 102. Specifically, the second drive component 1003 within the mounting cavity 903 drives the bidirectional threaded rod 1002 to rotate. Since the bidirectional threaded rod 1002 is threadedly engaged with two sliding plates 1001, and the other end of each sliding plate 1001 is constrained by the track rod 1004, the two sliding plates 1001 will move synchronously towards or away from each other within the movable cavity 902. The mounting block 1005 at the top of the sliding plate 1001 slides within the movable groove 905, driving the clamping plate 1006 to move until the clamping plates 1006 on both sides firmly clamp the workpiece onto the placement table 9 via the anti-slip pads 1007. This clamping process itself has a cleaning function: on the one hand, when the clamping plate 1006 moves, its bottom end can scrape the debris on the top surface of the placement platform 9 to both sides; on the other hand, the bottom end of the sliding plate 1001 always slides and fits against the inclined surface of the ramp plate 904. During the movement, it will push down the metal debris that may fall into the active cavity 902 through the gap of the active groove 905, so that it can be collected along the inclined surface of the ramp plate 904 at both ends of the low chip discharge port 906 and finally discharged, effectively preventing debris from accumulating at key transmission components (such as the bidirectional threaded rod 1002 and the track rod 1004).

[0045] After the workpiece is fixed, the milling operation is started. The operator can control the moving component 5 and the milling component 11 by setting a program through the control box 102 or by manual operation. First, the first drive component 503 drives the one-way threaded rod 502 to rotate, which drives the slider 504 and the upper cross plate 505, angle adjustment plate 506 and the entire milling component 11 to move precisely along the length direction of the track frame 501 (parallel to the length direction of the workpiece) to achieve longitudinal feed. Second, by controlling the extension and retraction of the telescopic component 510, the first mounting sleeve 507 can be pushed to rotate around the first rotating connector 511, thereby flexibly adjusting the pitch angle of the milling component 11 installed in the first mounting sleeve 507 to adapt to different milling bevel requirements. The rotation of the second mounting sleeve 509 in the slot 508 provides the necessary degree of freedom of movement. The third drive component 1101 of the milling component 11 drives the milling head 1102 to rotate at high speed to mill the edge of the workpiece.

[0046] During milling, a large amount of chips will be generated and splash or fall onto the worktable. For chips on the surface of the placement table 9, after machining, the chips at the top of the placement table 9 can be pushed to the side of the placement table 9 and discharged by the mutual moving of the clamping plates 1006. Some chips that enter the placement table 9 through the movable groove 905 will slide down to the chip discharge port 906 and be discharged by the inclined guide of the ramp plate 904.

[0047] Furthermore, the vibrations generated during processing are effectively absorbed by the first damping pad 3 and the second damping pad 7, and partially converted into beneficial micro-vibrations on the table surface. This vibration allows debris falling onto the inclined first table panel 4 and the surface of the placement table 9 to continuously slide down the inclined surface. Simultaneously, the damage reduction connector 12, through its first vertical plate 1202 and second vertical plate 1203, indirectly connects to the side table 2 (or the middle table 6) and the first table panel 4 (or the second table panel 8), respectively. This effectively blocks the path of the table panel directly transmitting processing vibrations to the table and worktable 1 body, thereby ensuring that the first damping pad 3 and the second damping pad 7 can fully exert their elastic buffering and vibration isolation effects, improving damping efficiency and processing stability. This structure actively guides and primarily concentrates the stress concentration and metal fatigue at rigid connections caused by long-term vibration and load onto the detachable and easily replaceable independent component, the damage reduction connector 12. Therefore, even after long-term use, fatigue damage at the connection points is mainly limited to the damping connector 12 itself, while the pedestal and platform, as the main structural components, are effectively protected, greatly reducing their fatigue damage and extending the service life of the core structure. During maintenance, only the worn first damping pad 3, second damping pad 7, and damping connector 12 need to be replaced; large-scale repair or replacement of the pedestal or platform is unnecessary, significantly reducing maintenance costs and difficulty.

[0048] In addition, by fixing the damage reduction connector 12 with the first bolt 13 and the second bolt 14, a reliable and detachable connection is achieved between the first shock-absorbing pad 3, the first panel 4 and the side platform 2, and between the second shock-absorbing pad 7, the second panel 8 and the middle platform 6, which facilitates the maintenance or replacement of components such as the shock-absorbing pad in the future.

[0049] All components of this invention are general standard parts or parts known to those skilled in the art. Their structure and principles are readily known to those skilled in the art through technical manuals or conventional experimental methods. It is obvious to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] 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 steel structure milling machine, comprising a worktable, characterized in that, A central platform is installed at the top center of the workbench, and mirror-symmetrically distributed side platforms are installed on both sides of the top of the workbench. A first panel is installed on the top of the side platforms, and a first shock-absorbing pad is sandwiched between the side platforms and the first panel. The side of the two first panels that are close to each other is an inclined surface. A second panel is installed on the top of the central platform, and a second shock-absorbing pad is sandwiched between the central platform and the second panel. A placement platform is installed on the top of the second panel. The longitudinal section of the placement platform is an isosceles trapezoid. A collection frame is provided inside the workbench, and a chip removal groove is provided at the top of the workbench between the first and second panels. A movable component is mounted on the top of the first panel, and a milling component is mounted on the movable component. The movable component is used to adjust the position of the milling component. Several clamping components are arranged along the length of the placement platform. The bottom of the front and rear ends of the placement platform are provided with chip discharge ports. When the clamping components are in operation, they can drive the debris in the placement platform to be discharged from the chip discharge ports. Both ends of the side platform and both ends of the middle platform can be detachably installed with damage reduction connectors. One end of the first shock-absorbing pad and one end of the first panel can be detachably installed on the damage reduction connector at the corresponding position. One end of the second shock-absorbing pad and one end of the second panel can be detachably installed on the damage reduction connector at the corresponding position. Both sides of the side platform are provided with first embedding grooves, one end of the damage reduction connector is installed in the first embedding groove, the two sides of the first shock-absorbing pad are integrally formed with plate-shaped vertical edges, the two sides of the first platform are integrally formed with side sealing plates, and the bottom of the side sealing plates is installed at the other end of the damage reduction connector. The damage reduction connector includes a horizontal plate and a first vertical plate and a second vertical plate integrally formed at both ends of the horizontal plate. The first vertical plate is installed in a first embedding groove by a first bolt. A second embedding groove is provided at the top of the plate-shaped vertical edge. The upper part of the second vertical plate is inserted into the second embedding groove. The side sealing plate is connected to the second vertical plate by a second bolt. The second shock-absorbing pad, the second platform, and the middle platform adopt the same structure and installation method as the first shock-absorbing pad, the first platform, and the side platform, and are connected with the corresponding damage reduction connectors.

2. A steel structure milling machine according to claim 1, characterized in that, The moving component includes a track frame, a crossbar, and an angle adjustment plate. A one-way threaded rod is rotatably connected inside the track frame. A first driving component is installed on the outer wall of one end of the track frame. The output end of the first driving component is connected to one end of the one-way threaded rod. A slider is threadedly connected to the one-way threaded rod. A crossbar is installed on the top of the slider. An angle adjustment plate is installed on the end of the crossbar near the placement table. The milling component is installed on the angle adjustment plate.

3. A steel structure milling machine according to claim 2, characterized in that, The angle adjustment plate is right-angled, and a slot is provided at the center of the top of the angle adjustment plate. The inner bottom surface of the angle adjustment plate is rotatably connected to the bottom end of the first mounting sleeve through the first rotating connector. A second mounting sleeve is rotatably connected in the slot. A telescopic component is installed in the second mounting sleeve. One end of the telescopic component is rotatably connected to the top end of the first mounting sleeve through the second rotating connector. The milling assembly is installed in the first mounting sleeve.

4. A steel structure milling machine according to claim 1, characterized in that, The interior of the placement platform is divided into an active cavity and mounting cavities located on both sides of the active cavity by two symmetrically distributed partitions. A ramp plate is installed on the inner bottom surface of the active cavity. The top of the ramp plate is a slope that gradually slopes downward from the middle towards the front and rear ends, and the end of the ramp plate extends into the chip discharge port.

5. A steel structure milling machine according to claim 4, characterized in that, The clamping assembly includes sliding plates, a bidirectional threaded rod, and a track rod symmetrically distributed on both sides of the movable cavity. The bidirectional threaded rod is laterally rotatably connected to the movable cavity, and the track rod is laterally fixedly connected to the movable cavity. One end of each of the two sliding plates is symmetrically and threadedly connected to the bidirectional threaded rod, and the other end of each sliding plate is symmetrically and interlockingly connected to the track rod. A second driving member is installed on the inner wall of the mounting cavity. The output end of the second driving member is connected to one end of the bidirectional threaded rod. The bottom end of each sliding plate slides against the top end of the ramp plate. A mounting block is provided at the top end of each sliding plate, and a clamping plate is installed at the top end of the mounting block.

6. A steel structure milling machine according to claim 5, characterized in that, The top of the workbench is provided with a movable groove corresponding to the position of the mounting block. The mounting block is slidably disposed in the movable groove. The top of the mounting block is flush with the top of the placement table. The length of the clamping plate is greater than the width of the movable groove. The bottom end of the clamping plate is slidably attached to the top of the placement table.

7. A steel structure milling machine according to claim 6, characterized in that, The lower part of the clamping plate is L-shaped, and anti-slip pads are installed on the side of the two clamping plates that are close to each other.

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