A chamfering milling device for metal sheets

Abstract

This invention relates to the field of chamfering milling technology and discloses a chamfering milling device for metal sheets, including a main frame. Two sets of symmetrically distributed milling systems are symmetrically arranged on the outside of the main frame near the transmission device. A guide tooth plate is parallel to the main frame along its length. A symmetrically distributed cleaning mechanism is installed at the end of the guide tooth plate away from the transmission device. An I-shaped interface is provided on the guide tooth plate. When the I-shaped interface is aligned with the milling system, the guide tooth plate can be aligned and connected with the milling system after the change in shape. The milling system consists of a support mechanism slidably disposed on the outside of the main frame, milling assemblies assembled on the upper and lower sides of the support mechanism, a lubrication coating assembly arranged on the upper and lower sides of the inner side of the support mechanism, and a telescopic actuator disposed outside the lubrication coating assembly. This arrangement reduces the wear rate of the milling cutter and avoids the adverse effects of dust on the wear reduction mechanism.

Description

Technical Field

[0001] This invention relates to the field of chamfering milling technology, and more specifically to a chamfering milling apparatus for metal sheets. Background Technology

[0002] In the field of metal sheet processing technology, four-sided chamfering equipment is a key piece of equipment for achieving the chamfering transition of profile edges. Its technological development has evolved from manual grinding to mechanical milling. The CNC milling processing scheme commonly used in the existing technology (such as the invention patent with announcement number CN112108889B) uses an adaptive mechanism to keep the cutter head close to the edge of the sheet metal, avoiding uneven cutting depth and damage to the edge of the sheet metal after chamfering. This allows for high-precision chamfering of all four sides without changing the orientation of the sheet metal, improving processing efficiency. However, it has the following technical defects:

[0003] Problem of insufficient machining accuracy and stability: The existing equipment adopts a process scheme of continuously machining four edges, which leads to the cumulative effect of milling cutter wear. As the machining process progresses, the tool wear continues to intensify, directly affecting the accuracy and consistency of the fillet dimensions in the later stage of machining, and ultimately requiring machine shutdown to replace the tool, which seriously affects machining efficiency.

[0004] Issues related to the lack of pretreatment function: Since the equipment is not equipped with a pretreatment process, the dust attached to the surface of the board cannot be effectively removed. This not only significantly reduces the uniformity and effectiveness of lubricant coating, but also causes quality defects in subsequent coating processes, affecting the surface treatment effect of the final product.

[0005] The aforementioned technical defects have limited the processing accuracy and production efficiency of four-sided chamfering equipment, and urgently need to be improved through technological innovation. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a chamfering milling device for metal plates to solve the problems existing in the background art: how to reduce the wear rate of milling cutters and avoid the adverse effects of dust on the means of reducing wear.

[0007] This invention provides the following technical solution: a chamfering milling device for metal plates, comprising a main frame and support structures installed at the left and right ends of the main frame. Positioning and clamping assemblies are mounted at both ends of the main frame. A driving device and a matching transmission device are provided at one end of the inner side of the main frame. Two sets of symmetrically distributed milling systems are symmetrically arranged on the outside of the main frame near the transmission device. Guide tooth plates are parallel to each other along the length direction on the inner side of the main frame. A symmetrically distributed cleaning mechanism is installed at the end of the guide tooth plate away from the transmission device. An I-shaped interface is provided on the guide tooth plate. When the I-shaped interface is aligned with the milling system, the guide tooth plate can be aligned and connected with the milling system after the change in shape. The milling system consists of a bearing mechanism slidably disposed on the outside of the main frame, milling assemblies mounted on the upper and lower sides of the bearing mechanism, a lubrication and coating assembly arranged above and below the inner side of the bearing mechanism, and a telescopic actuator disposed outside the lubrication and coating assembly.

[0008] The lubrication and coating assembly includes an adjusting beam, a piston guide rod, a spring, an oiling roller, an oil distribution box, an oil supply pipe, an oil inlet pipe, and a locking pin insert. The adjusting beam is located inside the bearing mechanism, with its side away from the plate connected to the piston guide rod passing through the bearing frame. The spring is sleeved on the surface of the piston guide rod and located outside the bearing mechanism. The left and right ends of the adjusting beam are rotatably connected to the oiling roller located beside the milling assembly via bearings. The oiling roller is arranged parallel to the axial direction of the milling assembly. Two oil distribution boxes are symmetrically arranged on the top and bottom of the bearing mechanism, and each oil distribution box is connected to the lubricating oil and coating oil supply sources respectively through the oil inlet pipe. The piston guide rod passes through the left and right oil distribution boxes, and its side wall has a guide hole that can be aligned and communicated with the inner cavity of the oil distribution box. One end of the oil supply pipe is rotatably engaged with the oiling roller, and the other end is connected to the inner cavity end of the oil distribution box to control the liquid flow out of the oil. Locking pin inserts that can be inserted into each other are installed on the inner side walls of the adjusting beams on the upper and lower sides, and the locking pin inserts are located between the milling assembly and the oiling roller.

[0009] Furthermore, the bearing mechanism consists of a bearing frame, a side inspection cover, and a limiting pulley assembly; wherein the bearing frame adopts a double-layer symmetrical compartment, and each compartment is equipped with a milling assembly; the bearing frame is provided with detachable side inspection covers on both sides, and a limiting pulley assembly is installed at the axial center position of the bearing frame near the main frame, and the limiting pulley assembly and the guide rail of the main frame are connected in a limiting sliding connection.

[0010] Furthermore, the milling assembly consists of a servo motor, a milling cutter, and a second hydraulic cylinder; wherein the servo motor is located in the support frame compartment, and the milling cutter is mounted on its output shaft end; the second hydraulic cylinder is symmetrically installed on the upper top wall and the lower bottom wall of the compartment, and the base of the servo motor is fixedly connected to the telescopic end of the second hydraulic cylinder; the side walls of the support frame and the adjusting beam are both provided with guide grooves perpendicular to the axial direction of the milling cutter.

[0011] Furthermore, the guide tooth plate is provided with an I-shaped interface at the end adjacent to the cleaning mechanism. It consists of a narrow opening, a transition opening, and a wide opening from the outside to the inside, and the three opening structures are continuously connected. When the I-shaped interface is aligned with the milling system, the locking pin is precisely positioned on the upper and lower sides of the narrow opening of the I-shaped interface, while the oiling roller is accurately positioned on the upper and lower sides of the wide opening of the I-shaped interface, and the milling cutter is accurately positioned on the upper and lower sides of the transition opening of the I-shaped interface.

[0012] Furthermore, the oiling roller and the milling cutter are arranged coplanarly, the oiling roller has a hollow cavity inside, and an annular groove is machined on its end face; the inner peripheral wall of the annular groove is provided with an oil drain hole that connects to the hollow cavity; a flexible coating layer is embedded on the working surface of the groove.

[0013] Furthermore, the transmission device consists of two meshing transmission gears, with the outer edges of the two transmission gears respectively meshing with corresponding guide tooth plates; the drive device is a reversible motor, and the transmission gears are assembled with the output shaft of the reversible motor.

[0014] Furthermore, the main frame structure is formed by welding two longitudinally parallel guide rails and two transversely parallel crossbeams. The crossbeams are installed off-center from the lower edge of the guide rails, thus providing the necessary clearance for suspending the metal sheet. The guide tooth plate is close to the top of the crossbeam and has a dovetail-shaped slide bar near the inner wall of the main frame. The side wall of the main frame has a slide rail that matches the dovetail-shaped slide bar. The guide tooth plate and the bottom wall of the metal sheet suspended in the processing area are non-contact, and a gap space is reserved between them for the cleaning mechanism to slide smoothly.

[0015] Furthermore, the cleaning mechanism consists of a connecting block and cleaning strips attached to the upper and lower walls of the metal plate. The connecting block and the two cleaning strips combine to form a U-shaped structure. The cleaning strips have cleaning bristles on the side close to the metal plate. The connecting block is detachably installed on the guide tooth plate.

[0016] Furthermore, the positioning and clamping assembly consists of an electric push rod fixedly installed on the crossbeam of the main frame and an electric clamp connected to its end; the jaw plane of the electric clamp coincides with the center plane of the metal sheet, and the suspension position of the metal sheet is located at the inner center of the guide rail of the main frame; the extension stroke of the positioning and clamping assemblies on the left and right sides completely covers the area where the cleaning mechanism and transmission gear are located at the initial position, and the inner space of the main frame between the two constitutes the processing area for chamfering the metal sheet.

[0017] Furthermore, the telescopic actuator includes a first hydraulic cylinder and a pressure plate, wherein the first hydraulic cylinder is mounted outside the bearing mechanism and its telescopic end is connected to the pressure plate, which contacts the top end of the piston guide rod.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. The present invention, by incorporating a transmission gear, a guide toothed plate, and a cleaning mechanism, facilitates the transmission of torque by the drive device through the transmission gear, causing the guide toothed plate to move along the slide rail on the inner wall of the main frame, thereby driving the cleaning mechanism to clean the four edges of the plate, removing floating dust, creating ideal conditions for subsequent processes, and avoiding the adverse effects of dust on wear reduction methods.

[0020] 2. This invention, by incorporating a guide toothed plate and a milling system, facilitates precise alignment of the I-beam interface with the milling system. This is because the cleaning mechanism has already completed cleaning, and the locking pin, oiling rollers, and milling cutter are precisely aligned with the openings of the I-beam interface, achieving accurate assembly and connection. The first hydraulic cylinder is activated, and the piston guide rod drives the adjusting beam and other components to move towards the sheet metal. The upper and lower oiling rollers and locking pins respectively enter the wide and narrow openings to their predetermined positions, completing the docking assembly and providing stable power for processing. Simultaneously, the linkage mechanism ensures that oil penetrates evenly to the surface of the oiling rollers through a specific path, providing lubrication and coating conditions for subsequent processing; reducing the wear rate of the milling cutter; and providing coating protection for the chamfered sheet metal. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention and the connection of the device equipped with the spring-loaded mechanism.

[0022] Figure 2 This is a schematic diagram of the overall structure of the metal sheet after it has been made transparent and visible according to the present invention.

[0023] Figure 3 For the present invention Figure 2 Diagram of the local structure on the left side of the middle section.

[0024] Figure 4 For the present invention Figure 2 Diagram of the local structure on the right side of the middle section.

[0025] Figure 5 For the present invention Figure 2 The right-side orthographic projection of the structure.

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0027] Figure 7 For the present invention Figure 4 A schematic diagram of the local connection structure of the main frame and a set of milling systems.

[0028] Figure 8 This is a schematic diagram of the milling system of the present invention and its partial cross-sectional structure.

[0029] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point B.

[0030] Figure 10 For the present invention Figure 8 A further cross-sectional structural diagram of the milling system.

[0031] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point C.

[0032] Figure 12 This is a schematic diagram showing the I-shaped interface in the guide tooth plate of the present invention being driven to the center of the milling system and entering the docking assembly state.

[0033] Figure 13 For the present invention Figure 12 Schematic diagram of the structure at point D.

[0034] The attached diagram is labeled as follows: 1. Main frame; 2. Support structure; 3. Positioning and clamping assembly; 301. Electric push rod; 302. Electric clamp; 4. Transmission gear; 5. Guide tooth plate; 501. I-shaped mating interface; 6. Cleaning mechanism; 7. Bearing mechanism; 701. Bearing frame; 702. Side inspection cover plate; 703. Limiting pulley block; 8. Lubrication and coating assembly; 801. Adjusting beam; 802. Piston guide rod; 803. Spring; 804. Oiling roller; 805. Oil distribution box; 806. Oil supply pipe; 807. Oil inlet pipe; 808. Locking pin insert; 9. Telescopic actuator; 901. First hydraulic cylinder; 902. Pressure plate; 10. Springback device; 11. Milling assembly; 1101. Servo motor; 1102. Milling cutter; 1103. Second hydraulic cylinder. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The chamfering milling device for metal plates involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figure 1-13This invention provides a chamfering milling device for metal sheets, including a main frame 1 and support structures 2 installed at the left and right ends of the main frame 1. Positioning and clamping assemblies 3 are installed at both the left and right ends of the main frame 1. A driving device and a matching transmission device are provided at one end of the inner side of the main frame 1. Two sets of symmetrically distributed milling systems are symmetrically arranged on the outside of the main frame 1 near the transmission device. Two guide tooth plates 5 are arranged parallel to each other along the length direction on the inner side of the main frame 1. A symmetrically distributed cleaning mechanism 6 is installed at the end of the guide tooth plate 5 away from the transmission device. An I-shaped interface 501 is provided on the guide tooth plate 5. When the I-shaped interface 501 is aligned with the milling system, the guide tooth plate 5 can be aligned and connected with the milling system after the shape change.

[0037] The milling system consists of a support mechanism 7 slidably disposed on the outside of the main frame 1, a milling assembly 11 symmetrically assembled on the upper and lower sides of the support mechanism 7, a lubrication coating assembly 8 symmetrically arranged on the upper and lower sides of the inner side of the support mechanism 7, and a telescopic actuator 9 disposed on the outside of the lubrication coating assembly 8.

[0038] In this embodiment, it should be specifically noted that the transmission device can be configured as two meshing transmission gears 4, and the outer edges of the two transmission gears 4 respectively form a meshing connection with the corresponding contacting guide tooth plates 5; the drive device can be a reversible motor, and power transmission is achieved by integrating the transmission gears 4 with the output shaft of the reversible motor.

[0039] The main frame 1 is formed by welding two longitudinally parallel guide rails and two transversely parallel crossbeams. The crossbeams are installed off-center from the lower edge of the guide rails, thus providing the necessary clearance for suspending the metal sheet. The guide tooth plate 5 is close to the top of the crossbeams and has a dovetail-shaped slide bar near the inner wall of the main frame 1. The side wall of the main frame 1 has a slide rail that matches the dovetail-shaped slide bar, so that the guide tooth plate 5 can move horizontally and stably along the slide rail without derailing under the transmission of the transmission gear 4. The guide tooth plate 5 and the bottom wall of the metal sheet suspended in the processing area are non-contact, and a gap space is reserved between them for the smooth sliding of the cleaning mechanism 6.

[0040] The cleaning mechanism 6 consists of a connecting block and cleaning strips attached to the upper and lower walls of the metal plate. The connecting block and the two cleaning strips combine to form a U-shaped structure. The cleaning strips have cleaning bristles on the side closest to the metal plate. Cleaning bristles can be optionally added to the inner wall of the connecting block, and they are detachably installed on the guide tooth plate 5 for easy disassembly, cleaning, or replacement. The cleaning mechanism 6 can move synchronously with the guide tooth plate 5 to clean the four edges of the upper and lower metal plate. The cleaning mechanism 6 can also be replaced by a rotating brush or a negative pressure adsorption system.

[0041] The positioning and clamping assembly 3 consists of an electric push rod 301 fixedly installed on the crossbeam of the main frame 1 and an electric clamp 302 connected to its end. The jaw plane of the electric clamp 302 coincides with the center plane of the metal sheet, and the metal sheet is suspended at the inner center of the guide rail of the main frame 1 to ensure that the distance between it and the upper and lower lubrication coating assemblies 8 of the milling system remains equal. At the same time, the extension stroke of the positioning and clamping assemblies 3 on the left and right sides must ensure that the cleaning mechanism 6 and the area where the transmission gear 4 is located at the initial position are completely covered. The inner space of the main frame 1 between the two constitutes a special working area for the chamfering of the metal sheet, i.e., the processing area. The electric push rod 301, the electric clamp 302 and the transmission gear 4 always maintain a non-contact state, thereby ensuring that when the electric push rod 301 drives the electric clamp 302 to move, it completely avoids spatial interference with the transmission gear 4.

[0042] Support structure 2 is installed on the ground. Its longitudinal dimension needs to be precisely designed according to the actual production situation to ensure that the milling system maintains a safe clearance from the ground even at the maximum working stroke.

[0043] The chamfering milling device also includes a control system, which receives execution commands to regulate the operation of the power components;

[0044] In this article, all our discussions of positional relationships, including front-back, left-right, and right-side relationships, are based on... Figure 1-2 Defined from the perspective presented, these directional descriptions do not have actual geographical or physical meaning. They are merely a reference framework set up to help readers understand the content of the text more intuitively. In this way, we can more clearly show the relative positional relationship between the various parts, making the entire argument process easier to understand and follow. Please note that these custom directional markers are only for use within this article and do not represent any absolute direction or position in the real world.

[0045] Reference Figure 3 , Figure 5-11 The guide tooth plate 5 is provided with an I-shaped mating interface 501 at the end adjacent to the cleaning mechanism 6. It consists of a narrow opening, a transition opening and a wide opening from the outside to the inside, and the three opening structures are continuously connected. After the cleaning mechanism 6 completes the four-sided milling operation of the metal plate and leaves the workpiece surface, the I-shaped mating interface 501 has moved along the guide rail to the docking area on the right side of the main frame 1, which is located directly below the initial position of the milling system.

[0046] The bearing mechanism 7 consists of a bearing frame 701, a side inspection cover 702, and a limiting pulley block 703. The bearing frame 701 adopts a double-layer symmetrical compartment, and each compartment is equipped with a milling assembly 11. The bearing frame 701 has detachable side inspection covers 702 on both sides to facilitate maintenance of the components inside the compartment. The limiting pulley block 703 is installed at the axial center position of the bearing frame 701 near the main frame 1. The limiting pulley block 703 is connected to the guide rail of the main frame 1 in a limiting sliding connection to ensure that the bearing mechanism 7 can achieve smooth linear movement along the rail.

[0047] The milling assembly 11 consists of a servo motor 1101, a milling cutter 1102, and a second hydraulic cylinder 1103. The servo motor 1101 is located inside the support frame 701, and the milling cutter 1102 is mounted on its output shaft. The second hydraulic cylinder 1103 is symmetrically installed on the upper top wall and the lower bottom wall of the compartment. The base of the servo motor 1101 is fixedly connected to the telescopic end of the second hydraulic cylinder 1103. By adjusting the telescopic amount of the second hydraulic cylinder 1103, the spatial position of the servo motor 1101 and the milling cutter 1102, i.e., the distance between the upper and lower milling cutters 1102, can be adjusted, thereby realizing the dynamic control of the milling depth of the milling cutter 1102.

[0048] The lubrication coating assembly 8 includes an adjusting beam 801, a piston guide rod 802, a spring 803, an oiling roller 804, an oil distribution box 805, an oil supply pipe 806, an oil inlet pipe 807, and a locking pin insert 808. The adjusting beam 801 is located inside the bearing mechanism 7, with its side furthest from the plate connected to the piston guide rod 802 passing through the bearing frame 701. The spring 803 is sleeved on the surface of the piston guide rod 802 and located outside the bearing mechanism 7. The left and right ends of the adjusting beam 801 are rotatably connected via bearings to the oiling roller 804 located beside the milling assembly 11. The oiling roller 804 is arranged axially parallel to the milling cutter 1102. Two oil distribution boxes 805 are symmetrically arranged on the top and bottom, and each oil distribution box 805 is connected to the lubricating oil and coating oil supply sources respectively through the oil inlet pipe 807; the piston guide rod 802 passes through the left and right oil distribution boxes 805 and its side wall has a guide hole that can be aligned and communicated with the inner cavity of the oil distribution box 805; one end of the oil supply pipe 806 is rotatably engaged with the oiling roller 804, and the other end is connected to the end of the inner cavity of the control oil distribution box 805 to discharge the liquid; the inner side wall of the adjusting beam 801 on the upper and lower sides is equipped with locking pin inserts 808 that can be inserted into each other, and the locking pin inserts 808 are located between the milling cutter 1102 and the oiling roller 804;

[0049] The telescopic actuator 9 includes a first hydraulic cylinder 901 and a pressure plate 902, wherein the first hydraulic cylinder 901 is mounted outside the bearing mechanism 7 and its telescopic end is connected to the pressure plate 902, and the pressure plate 902 is in contact with the top end of the piston guide rod 802; the telescopic actuator 9 may also be replaced by other pressing mechanisms.

[0050] In this embodiment, it should be specifically noted that both the support frame 701 and the adjusting beam 801 have guide grooves perpendicular to the axis of the milling cutter 1102 on their side walls. The dimensions of the guide grooves meet the following technical requirements: ensuring that the output shaft of the servo motor 1101 can pass through without obstruction; the groove length must be compatible with the lifting requirements of the maximum stroke of the adjusting beam 801; and there should be no motion interference with the power output of the servo motor 1101 during the entire stroke of the adjusting beam 801.

[0051] The load-bearing mechanism 7 can be connected to the wall via the springback device 10. The springback device 10 can be selected as an elastic component that can generate elastic potential energy. After the entire process is completed, the locking of the milling system and the guide tooth plate 5 is released first. At this time, the springback device 10 will play a role and pull the entire system to smoothly spring back to the initial position under its elastic force, reducing the reset process.

[0052] The oiling roller 804 and the milling cutter 1102 are arranged on the same plane. The oiling roller 804 has a hollow cavity inside, and its roller end face is machined with an annular groove. The inner peripheral wall of the annular groove is provided with an oil drain hole that connects to the hollow cavity. A flexible coating layer is embedded on the working surface of the groove.

[0053] When the I-shaped interface 501 reaches the docking area, that is, when the I-shaped interface 501 is aligned with the milling system, the locking pin insert 808 is precisely positioned on the upper and lower sides of the narrow opening of the I-shaped interface 501, while the oiling roller 804 is accurately positioned on the upper and lower sides of the wide opening of the I-shaped interface 501, and the milling cutter 1102 is accurately positioned on the upper and lower sides of the transition port of the I-shaped interface 501, creating precise alignment conditions for the combined connection of the lubrication coating assembly 8 and the guide tooth plate 5.

[0054] Of the two locking pins 808 set within the same longitudinal axis, one is a hollow structure, and the other can be smoothly inserted into it to achieve engagement; the movement trajectory of the cleaning mechanism 6 and the locking pins 808 adopt a spatially staggered layout design, that is, the movement trajectories of the two are set in parallel, thereby effectively avoiding interference between the two during movement.

[0055] Working principle of this invention:

[0056] First, the operator suspends the metal sheet in the processing area inside the main frame 1 and starts the positioning clamping assembly 3 for positioning. Specifically, the telescopic end of the electric push rod 301 drives the electric clamp 302 to extend towards the side wall of the sheet, so that the side edge of the sheet is precisely embedded in the jaws of the electric clamp 302. Then, the electric clamp 302 performs a jaw locking action. Through the coordinated action of the symmetrically arranged positioning clamping assemblies 3, reliable clamping of the metal sheet is achieved. This positioning system ensures that the sheet is stably suspended in the center of the processing area, providing a precise working reference for the subsequent chamfering and milling process. It is particularly important to emphasize that the bottom wall of the metal sheet suspended in the processing area and the guide tooth plate 5 are always kept in a non-contact state, with a gap space reserved between them to ensure the smooth sliding of the cleaning mechanism 6. At the same time, the movement trajectory of the cleaning mechanism 6 and the locking pin plug 808 adopt a spatially staggered layout design, that is, they are set in parallel, thereby effectively avoiding interference between them during movement.

[0057] Subsequently, the drive unit is activated, which transmits torque to any one of the transmission gears 4. Through the two meshing transmission gears 4, the power is transmitted outward to the two guide tooth plates 5. During the transmission process, the two guide tooth plates 5 move smoothly in the same direction along the slide rails preset on the inner wall of the main frame 1. At the same time, the cleaning mechanism 6 connected to the left end of the guide tooth plate 5 moves in coordination to continuously approach the side of the transmission gear 4. The cleaning mechanism 6 gradually approaches the metal plate and slides to its surface edge. Then, during its movement, the cleaning mechanism 6 performs efficient cleaning operations on the edges of the plate it passes through. According to actual needs, the cleaning mechanism 6 can be configured as a rotating brush or a negative pressure adsorption system to ensure the best dust removal effect. Thanks to the symmetrical arrangement of the cleaning mechanism 6 on both sides of the plate, the system can simultaneously clean the four edges of the plate in the extension direction, automatically remove surface dust, and create ideal pretreatment conditions for subsequent oiling, lubrication and coating processes.

[0058] When the I-shaped interface 501 on the surface of the guide tooth plate 5 slides to the mating area (e.g. Figure 12In the state shown, that is, when facing the milling system, the cleaning mechanism 6 has completed the cleaning of the four edges of the metal sheet and detached from the sheet surface. At this time, the locking pin insert 808 is precisely aligned with the upper and lower sides of the narrow opening of the I-shaped interface 501, while the oiling roller 804 is accurately aligned with the upper and lower sides of the wide opening of the I-shaped interface 501, and the milling cutter 1102 is accurately aligned with the upper and lower sides of the transition opening of the I-shaped interface 501, creating precise alignment conditions for the combined connection of the lubrication coating assembly 8 and the guide tooth plate 5; the specific execution process is as follows: in the milling... After the I-shaped interface 501 is aligned with the milling system, the first hydraulic cylinders 901 on both the upper and lower sides of the milling system are simultaneously activated. Their extension and retraction ends drive the connected pressure plate 902 to perform a retraction action. During the retraction process, the pressure plate 902 presses the piston guide rod 802 and compresses the spring 803, driving the connected adjusting beam 801 and the oiling rollers 804 and locking pin inserts 808 mounted on it to move as a whole towards the metal sheet. Ultimately, the adjacent ends of the oiling rollers 804 on both the upper and lower sides enter the wide opening of the I-shaped interface 501 and are precisely aligned. The system accurately reaches the plane containing the upper and lower edges of the plate, while the locking pins 808 on both sides pass through the narrow opening of the I-shaped interface 501 to achieve a plug-in fit. This combination ensures that the corresponding oiled rollers 804 and milling cutters 1102 on both sides maintain an open space, ensuring that subsequent machining operations are not interfered with. In particular, the locking pins 808 inserted into the narrow opening can form a linkage with the horizontally moving guide tooth plate 5, thereby providing stable propulsion power for the entire milling system. The special design of this system is that when the piston guide rod 802 moves towards the plate... When the material moves in the direction of the material, the guide hole at the bottom of its side wall will be aligned and connected with the inner cavity of the oil distribution box 805. This linkage mechanism allows the lubricating oil and the coating oil to be delivered to the corresponding oil distribution box 805 cavity through the oil inlet pipe 807, and then distributed to the left and right oiling rollers 804 through the oil delivery pipe 806. Finally, the oil is evenly penetrated into the flexible coating layer on its surface through the oil drain hole specially provided at the end of the oiling roller 804, providing pre-prepared lubrication conditions for subsequent plate processing and coating treatment of the cutting area after processing.

[0059] After the milling system and the guide tooth plate 5 are precisely docked, the control system commands the drive device to execute the reverse output, which drives the guide tooth plate 5 and the lubrication coating assembly 8 docked with it to move smoothly to the left through the transmission mechanism of the transmission gear 4. As the milling system gradually approaches the metal plate and is located at its surface edge, the servo motor 1101 drive unit drives the milling cutter 1102 to rotate at high speed. By adjusting the extension and retraction of the second hydraulic cylinder 1103, the spatial position of the servo motor 1101 and the milling cutter 1102 can be adjusted in real time, thereby accurately controlling the milling depth of the milling cutter 1102, i.e., the chamfer radius. The system can perform simultaneous chamfering on the upper and lower four edges of the plate on the travel path: the oiling roller 804 on the left performs pre-lubrication on the contacting plate edge, and the oiling roller 804 on the right performs immediate coating protection on the chamfered edge. The entire processing continues until the milling system is completely removed from the plate surface, completing the full-process processing of the workpiece.

[0060] After the entire processing is completed, the positioning and clamping assembly 3 releases its fixing constraint on the sheet metal, and the operator can remove the processed sheet metal; at this time, the system provides two reset methods:

[0061] Method 1: Drive the milling system again to perform the reset action through the drive device. After the milling system is fully reset, release the connection lock between it and the guide tooth plate 5.

[0062] Method 2: First, release the connection lock between the milling system and the guide tooth plate 5. At this time, the springback device 10 will automatically play its role and pull the entire system back to the initial position under the action of elastic force.

[0063] Both reset methods ensure the system safely returns to its initial position, preparing it for the next processing cycle.

[0064] The above is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, in accordance with the technical plan and its improved concept, should be included under the protection of the present invention.

Claims

1. A chamfering milling device for metal plates, comprising a main frame (1) and support structures (2) installed at the left and right ends of the main frame (1), wherein positioning clamping assemblies (3) are installed at both the left and right ends above the main frame (1), a driving device and a matching transmission device are provided at one end of the inner side of the main frame (1), and two sets of symmetrically distributed milling systems are symmetrically arranged on the outside of the main frame (1) near the transmission device side, characterized in that: The main frame (1) has a guide tooth plate (5) arranged parallel to the length direction on the inner side. A cleaning mechanism (6) is installed at the end of the guide tooth plate (5) away from the transmission device. The milling system consists of a bearing mechanism (7) slidably arranged on the outside of the main frame (1), a milling assembly (11) assembled on the upper and lower sides of the bearing mechanism (7), a lubrication coating assembly (8) arranged on the upper and lower sides of the inner side of the bearing mechanism (7), and a telescopic actuator (9) arranged on the outside of the lubrication coating assembly (8). The lubrication coating assembly (8) includes an adjusting beam (801), a piston guide rod (802), a spring (803), an oiling roller (804), an oil distribution box (805), an oil supply pipe (806), an oil inlet pipe (807), and a locking pin insert (808). The adjusting beam (801) is located inside the bearing mechanism (7), and its side away from the plate is connected to the piston guide rod (802) that passes through the bearing frame (701). The spring (803) is sleeved on the surface of the piston guide rod (802) and located outside the bearing mechanism (7). The left and right ends of the adjusting beam (801) are rotatably connected to the oiling roller (804) located beside the milling assembly (11) through bearings. The oiling roller (804) is parallel to the axial direction of the milling assembly (11). Arrangement; The bearing mechanism (7) is symmetrically arranged with two oil distribution boxes (805) arranged on the left and right sides at the top and bottom. Each oil distribution box (805) is connected to the lubricating oil and coating oil supply sources through the oil inlet pipe (807); The piston guide rod (802) passes through the left and right oil distribution boxes (805) and its side wall is opened with a guide hole that can be aligned and communicated with the inner cavity of the oil distribution box (805); One end of the oil supply pipe (806) is rotated and snapped with the oiling roller (804), and the other end is connected to the end of the inner cavity of the control oil distribution box (805) to discharge the liquid; The inner side wall of the adjusting beam (801) on the upper and lower sides is equipped with locking pin inserts (808) that can be inserted into each other, and the locking pin inserts (808) are located between the milling assembly (11) and the oiling roller (804); The guide tooth plate (5) is provided with an I-shaped interface (501) at the end adjacent to the cleaning mechanism (6). It consists of a narrow opening, a transition opening and a wide opening from the outside to the inside, and the three opening structures are continuously connected. When the I-shaped interface (501) is aligned with the milling system, the locking pin plug (808) is precisely positioned on the upper and lower sides of the narrow opening of the I-shaped interface (501), and at the same time, the oiling roller (804) is accurately positioned on the upper and lower sides of the wide opening of the I-shaped interface (501). The guide tooth plate (5) can be aligned and connected with the milling system.

2. The chamfering and milling device for metal sheets according to claim 1, characterized in that: The bearing mechanism (7) consists of a bearing frame (701), a side inspection cover plate (702), and a limiting pulley group (703); wherein the bearing frame (701) adopts a double-layer symmetrical compartment, and each compartment is equipped with a milling assembly (11); the bearing frame (701) is provided with detachable side inspection covers (702) on both sides, and a limiting pulley group (703) is installed at the axial center position of the bearing frame (701) near the main frame (1), and the limiting pulley group (703) and the guide rail of the main frame (1) are connected by a limiting sliding connection.

3. The chamfering and milling device for metal sheets according to claim 2, characterized in that: The milling assembly (11) consists of a servo motor (1101), a milling cutter (1102), and a second hydraulic cylinder (1103); wherein the servo motor (1101) is located in the compartment of the support frame (701), and the milling cutter (1102) is mounted on its output shaft end; the second hydraulic cylinder (1103) is symmetrically installed on the upper top wall and the lower bottom wall of the compartment, and the base of the servo motor (1101) is fixedly connected to the telescopic end of the second hydraulic cylinder (1103); the side walls of the support frame (701) and the adjusting beam (801) are both provided with guide grooves perpendicular to the axial direction of the milling cutter (1102).

4. The chamfering and milling device for metal sheets according to claim 3, characterized in that: The milling cutter (1102) is accurately positioned on the upper and lower sides of the transition port located at the I-shaped interface (501).

5. The chamfering and milling device for metal sheets according to claim 3, characterized in that: The oiling roller (804) and the milling cutter (1102) are arranged on the same plane. The inside of the oiling roller (804) is a hollow cavity, and an annular groove is machined on its roller end face. The inner peripheral wall of the annular groove is provided with an oil drain hole that connects to the hollow cavity. A flexible coating layer is embedded on the working surface of the groove.

6. The chamfering and milling device for metal sheets according to claim 1, characterized in that: The transmission device consists of two meshing transmission gears (4), the outer edges of which are respectively meshed with the corresponding guide tooth plates (5); the drive device is a reversible motor, and the transmission gears (4) are assembled with the output shaft of the reversible motor.

7. The chamfering and milling device for metal sheets according to claim 1, characterized in that: The main frame (1) structure is formed by welding two longitudinally parallel guide rails and two transversely parallel crossbeams. The crossbeams are installed at the lower edge of the guide rails, thereby providing the necessary clearance space for the metal sheet to be suspended. The guide tooth plate (5) is close to the top of the crossbeam and is provided with a dovetail slide near the inner wall of the main frame (1). The side wall of the main frame (1) is provided with a slide rail that matches the dovetail slide. The guide tooth plate (5) and the bottom wall of the metal sheet suspended in the processing area are non-contact. A gap space is reserved between them for the cleaning mechanism (6) to slide smoothly.

8. The chamfering and milling apparatus for metal sheets according to claim 1 or 7, characterized in that: The cleaning mechanism (6) consists of a connecting block and cleaning strips attached to the upper and lower walls of the metal plate. The connecting block and the two cleaning strips form a U-shaped structure. The cleaning strips are provided with cleaning bristles on the side close to the metal plate. The connecting block is detachably installed on the guide tooth plate (5).

9. The chamfering and milling device for metal sheets according to claim 1, characterized in that: The positioning clamping assembly (3) consists of an electric push rod (301) fixedly installed on the crossbeam of the main frame (1) and an electric clamp (302) connected to its end; the jaw plane of the electric clamp (302) coincides with the center plane of the metal plate, and the metal plate is suspended at the inner center of the guide rail of the main frame (1); the extension stroke of the positioning clamping assemblies (3) on the left and right sides completely covers the area where the cleaning mechanism (6) and the transmission gear (4) are located at the initial position, and the inner space of the main frame (1) between the two constitutes the processing area for chamfering of the metal plate.

10. The chamfering and milling apparatus for metal sheets according to claim 1, characterized in that: The telescopic actuator (9) includes a first hydraulic cylinder (901) and a pressure plate (902), wherein the first hydraulic cylinder (901) is installed outside the bearing mechanism (7) and its telescopic end is connected to the pressure plate (902), and the pressure plate (902) is in contact with the top end of the piston guide rod (802).

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