Chamfer milling device for metal plate

Abstract

The invention relates to the technical field of chamfering and milling, and discloses a metal plate chamfering and milling device which comprises a main body frame, two groups of milling systems which are symmetrically distributed are symmetrically arranged outside the main body frame close to the side of a transmission device, and guide toothed plates which are arranged on the inner side of the main body frame in parallel in the length direction. Cleaning mechanisms which are symmetrically distributed are installed at the end, away from the transmission device, of the guide toothed plate, an I-shaped butt joint opening is formed in the guide toothed plate, and when the I-shaped butt joint opening is aligned to the milling system, the guide toothed plate can be connected with the shape-changed milling system in an aligned mode; the milling system is composed of a bearing mechanism arranged on the outer side of the main body frame in a sliding mode, milling assemblies assembled on the upper side and the lower side of the bearing mechanism, lubricating coating assemblies arranged on the upper portion and the lower portion of the inner side of the bearing mechanism, and telescopic drivers arranged outside the lubricating coating assemblies. Through the arrangement, the loss rate of the milling cutter is reduced, and the adverse effect of dust on the abrasion reducing means is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of chamfer milling, and more particularly to a chamfer milling device for metal plates. Background Art

[0002] In the field of sheet metal processing technology, four-side chamfering equipment, as key equipment for achieving the chamfer transition of profile edges, has undergone an evolutionary process from manual grinding to mechanical milling. The CNC milling processing solution commonly used in the existing technology (such as the invention patent with announcement number CN112108889B) uses an adaptive mechanism to keep the above-mentioned cutter head in close contact with the plate edge, avoiding uneven cutting depth and damage to the plate edge after chamfering. It can complete high-precision chamfering of four sides without changing the direction of the plate, thereby improving processing efficiency. However, it has the following technical defects: Insufficient machining accuracy and stability: The existing equipment uses a process solution for continuously machining four edges, resulting in a cumulative effect of milling cutter wear. As the machining process progresses, tool wear continues to increase, directly affecting the accuracy and consistency of the fillet size in the later stages of machining. Ultimately, it is necessary to stop the machine and replace the tool, seriously affecting machining efficiency.

[0003] ‌Problem of missing pre-treatment function‌: Since the equipment is not equipped with a pre-treatment process, the dust attached to the surface of the plate cannot be effectively removed. This not only significantly reduces the uniformity and effectiveness of the lubricating coating, but also causes quality defects in the subsequent coating process, affecting the surface treatment effect of the final product.

[0004] The above technical defects restrict the processing accuracy and production efficiency of four-side chamfering processing equipment, and urgently need to be improved through technological innovation. Summary of the Invention

[0005] 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 above-mentioned background technology: how to reduce the loss rate of the milling cutter and avoid the adverse effects of dust on the wear reduction means.

[0006] The present invention provides the following technical solutions: a chamfering and milling device for metal plates, comprising a main frame and supporting structures installed at the left and right ends of the main frame, positioning and clamping assemblies are installed at the left and right ends above the main frame, a driving device and a matching transmission device are provided at one end inside the main frame, two groups of symmetrically distributed milling systems are symmetrically arranged on the outside of the main frame near the transmission device, a guide tooth plate is arranged parallel to the length direction on the inside of the main frame, a symmetrically distributed cleaning mechanism is installed at the end of the guide tooth plate away from the transmission device, a work-shaped docking port is provided on the guide tooth plate, and when the work-shaped docking port is aligned with the milling system, the guide tooth plate can be aligned and connected with the milling system after the shape is changed; the milling system consists of a carrying mechanism slidably arranged on the outside of the main frame, a milling assembly installed on the upper and lower sides of the carrying mechanism, a lubricating coating assembly arranged on the upper and lower sides of the inner side of the carrying mechanism, and a telescopic drive provided on the outside of the lubricating coating assembly; The lubricating coating assembly includes an adjusting beam, a piston guide rod, a spring, an oiling roller, an oil distribution box, an oil pipe, an oil inlet pipe and a locking pin plug-in, wherein the adjusting beam is arranged on the inner side of the supporting mechanism and its side away from the plate is connected to the piston guide rod passing through the supporting frame, the spring is sleeved on the surface of the piston guide rod and is located outside the supporting mechanism, and the left and right ends of the adjusting beam are rotatably connected to the oiling roller located on the side of the milling assembly through bearings, and the oiling roller is arranged axially parallel to the milling assembly; two oil distribution boxes arranged symmetrically on the top and bottom of the supporting mechanism are respectively connected to the lubricating oil and coating oil supply sources through the oil inlet pipe; the piston guide rod passes through the left and right oil distribution boxes and its side wall is provided with a guide hole that can be aligned and connected with the inner cavity of the oil distribution box; one end of the oil pipe is rotatably engaged with the oiling roller, and the other end is connected to the inner cavity end of the oil distribution box for controlling the discharge of liquid flow; the inner side walls of the upper and lower adjusting beams are equipped with locking pin plug-ins that can be plugged into each other, and the locking pin plug-in is arranged between the milling assembly and the oiling roller.

[0007] Furthermore, the bearing mechanism is composed of a bearing frame, a lateral inspection cover and a limiting pulley group; the bearing frame adopts a double-layer symmetrical cabin, and each cabin is equipped with a milling assembly; removable lateral inspection covers are provided on both sides of the bearing frame, and a limiting pulley group is installed at the axial center position of the bearing frame adjacent to the main frame, and the limiting pulley group and the guide rail of the main frame are in a limiting sliding connection.

[0008] Furthermore, the milling assembly consists of a servo motor, a milling cutter and a second hydraulic cylinder; the servo motor is located in the carrier cabin, and the milling cutter is assembled on the output shaft end; the second hydraulic cylinder is symmetrically installed on the upper cabin top wall and the lower cabin bottom wall, and the base of the servo motor is fixedly connected to the telescopic end of the second hydraulic cylinder; the side walls of the carrier and the adjusting beam are provided with guide grooves perpendicular to the axis of the milling cutter.

[0009] Furthermore, the guide tooth plate is provided with an I-shaped docking interface at the end adjacent to the cleaning mechanism, which is composed of a narrow opening, a transition opening and a wide opening from the outside to the inside, and the three-section opening structure is continuously connected; when the I-shaped docking interface is aligned with the milling system, the locking pin plug-in is precisely located on the upper and lower sides of the narrow opening of the I-shaped docking interface, and at the same time, the oiling roller is precisely located on the upper and lower sides of the wide opening of the I-shaped docking interface, and the milling cutter is precisely located on the upper and lower sides of the transition opening of the I-shaped docking interface.

[0010] Furthermore, the oiling roller and the milling cutter are arranged in the same plane, the interior of the oiling roller is a hollow cavity, and the roller end face is processed with an annular groove; the inner wall of the annular groove is provided with an oil drainage hole connected to the hollow cavity; and a flexible coating layer is inlaid on the working surface of the groove.

[0011] Furthermore, the transmission device is two mutually meshing transmission gears, and the outer edges of the two transmission gears are respectively meshed with the corresponding contacting guide tooth plates; the driving device is a reversible motor, and the transmission gears are assembled with the output shaft of the reversible motor.

[0012] Furthermore, the main frame structure is formed by welding two longitudinally parallel guide rails and two transversely parallel beams, wherein the beam installation position is arranged biased towards the lower edge of the guide rail, thereby providing the metal sheet with the retreat space required for suspension; the guide tooth plate is close to the top of the beam, and a dovetail slide is provided near the inner wall of the main frame, and the side wall of the main frame is provided with a slide rail adapted to the dovetail slide, and 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 the two for the smooth sliding of the cleaning mechanism.

[0013] Furthermore, the cleaning mechanism is composed of a connecting block and cleaning strips attached to the upper and lower walls of the metal plate. The connecting block and the upper and lower cleaning strips are combined to form a U-shaped structure. Cleaning bristles are provided on the side of the cleaning strip close to the metal plate, and the connecting block is detachably mounted on the guide tooth plate.

[0014] Furthermore, the positioning and clamping assembly consists of an electric push rod fixedly mounted on the crossbeam of the main frame and an electric pliers connected to its end; the jaw plane of the electric pliers coincides with the center plane of the metal sheet, and the metal sheet suspension position is located at the inner center of the guide rail of the main frame; the positioning and clamping assemblies on the left and right sides have an extension stroke that completely covers the area where the cleaning mechanism and the transmission gear are located in the initial position, and the inner space of the main frame between the two constitutes the processing area for chamfering the metal sheet.

[0015] Furthermore, the telescopic drive includes a first hydraulic cylinder and a pressure plate, wherein the first hydraulic cylinder is installed outside the supporting mechanism and its telescopic end is connected to the pressure plate, and the pressure plate is in contact with the top end of the piston guide rod.

[0016] Technical effects and advantages of the present invention: 1. The present invention incorporates a transmission gear, a guide tooth plate, and a cleaning mechanism. This facilitates the transmission of torque by the drive device through the transmission gear, causing the guide tooth plate to move along the inner wall slide rail of the main frame, driving the cleaning mechanism to clean the four edges of the plate, removing loose dust. This creates ideal conditions for subsequent processes and prevents the adverse effects of dust on the wear reduction mechanism.

[0017] 2. The present invention, through the provision of a guide tooth plate and milling system, facilitates alignment of the workpiece interface with the milling system. This facilitates precise assembly and connection. When the cleaning mechanism completes cleaning, the locking pin insert, oiling roller, and milling cutter are precisely aligned with the openings of the workpiece interface. The first hydraulic cylinder is activated, and the piston guide rod drives the adjusting beam toward the sheet metal. The upper and lower oiling rollers and locking pin insert respectively enter the wide and narrow openings to the predetermined positions, completing the docking assembly and providing stable power for processing. Simultaneously, the linkage mechanism ensures that oil evenly penetrates the oiling roller surface through a specific path, providing lubrication and coating conditions for subsequent processing. This reduces milling cutter wear and provides a protective coating to the sheet metal after chamfering. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention and the connection equipped with a rebound device.

[0019] Figure 2 This is a schematic diagram of the overall structure of the metal plate after being made visible and transparent according to the present invention.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the local structure on the middle left.

[0021] Figure 4 For the present invention Figure 2 Schematic diagram of the local structure on the middle right.

[0022] Figure 5 For the present invention Figure 2 Right view orthographic projection of the structure in the middle.

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0024] Figure 7 For the present invention Figure 4 Schematic diagram of the local connection structure of the main frame and a set of milling systems.

[0025] Figure 8 It is a schematic diagram of the milling system of the present invention and its partial cross-sectional structure.

[0026] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point B.

[0027] Figure 10 For the present invention Figure 8 Further cross-sectional structural diagram of the milling system.

[0028] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point C in the middle.

[0029] Figure 12 It is a schematic diagram of the I-shaped docking port in the guide tooth plate of the present invention being driven to the position directly below the milling system and entering the docking assembly state.

[0030] Figure 13 For the present invention Figure 12 Schematic diagram of the structure at point D in the middle.

[0031] The accompanying drawings are marked as follows: 1. Main frame; 2. Support structure; 3. Positioning and clamping assembly; 301. Electric push rod; 302. Electric pliers; 4. Transmission gear; 5. Guide gear plate; 501. I-shaped docking interface; 6. Cleaning mechanism; 7. Carrying mechanism; 701. Carrying frame; 702. Lateral inspection cover; 703. Limiting pulley group; 8. Lubrication coating assembly; 801. Adjusting beam; 802. Piston guide rod; 803. Spring; 804. Oiling roller; 805. Oil distribution box; 806. Oil pipeline; 807. Oil inlet pipe; 808. Locking pin plug-in; 9. Telescopic drive; 901. First hydraulic cylinder; 902. Pressure plate; 10. Rebound device; 11. Milling assembly; 1101. Servo motor; 1102. Milling cutter; 1103. Second hydraulic cylinder. DETAILED DESCRIPTION

[0032] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The chamfering milling device for metal plates involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Reference Figure 1-13The present invention provides a chamfering and 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, positioning and clamping assemblies 3 are installed at the left and right ends above the main frame 1, a driving device and a matching transmission device are provided at one end inside the main frame 1, and two groups 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 inside of the main frame 1, and a symmetrically distributed cleaning mechanism 6 is installed at the end of the guide tooth plate 5 away from the transmission device, and a work-shaped docking port 501 is provided on the guide tooth plate 5. When the work-shaped docking port 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; The milling system consists of a supporting mechanism 7 slidingly arranged on the outside of the main frame ‌1, a milling assembly 11 symmetrically assembled on the upper and lower sides of the supporting mechanism 7, a lubricating coating assembly 8 symmetrically arranged on the upper and lower sides of the inner side of the supporting mechanism 7, and a telescopic drive 9 arranged outside the lubricating coating assembly 8.

[0034] In this embodiment, it should be specifically explained that the transmission device can be configured as two mutually meshing transmission gears 4, and the outer edges of the two transmission gears 4 are respectively meshed with the corresponding contacting guide tooth plates 5 to form a meshing connection; the driving device can optionally be a reversible motor, and power transmission is achieved by integrating the transmission gears 4 with the output shaft of the reversible motor; The main frame ‌1 structure is formed by welding two longitudinally parallel guide rails and two transversely parallel beams. The beams are installed at an angle to the lower edge of the guide rails to provide the necessary clearance for the metal sheet to be suspended. The guide tooth plate 5 is close to the top of the beams, and a dovetail-shaped slide is provided near the inner wall of the main frame ‌1. The side wall of the main frame ‌1 is provided with a slide rail that adapts to the dovetail slide rail, so that the guide tooth plate 5 can move horizontally and stably along the slide rail without derailing under the drive 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-contacting, and a gap is reserved between the two for the smooth sliding of the cleaning mechanism 6. The cleaning mechanism 6 consists of a connecting block and cleaning strips attached to the upper and lower walls of the metal sheet. The connecting block and the upper and lower cleaning strips form a U-shaped structure. The cleaning strips are provided with cleaning bristles on the side close to the metal sheet. Cleaning bristles can be optionally added to the inner wall of the connecting block, and they are detachably mounted on the guide tooth plate 5 for easy removal, cleaning, or replacement. The cleaning mechanism 6 can move synchronously with the guide tooth plate 5 to clean the upper and lower four edges of the metal sheet. The cleaning mechanism 6 can also be replaced with a cleaning structure such as a rotating brush or a negative pressure adsorption system. The positioning and clamping assembly 3 consists of an electric push rod 301 fixedly mounted 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 spacing between it and the upper and lower sets of lubricating 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 transmission gear 4 in the initial position are completely covered, and the inner space of the main frame 1 between the two constitutes a dedicated working area for chamfering of metal sheets, that is, the processing area; and 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, spatial interference with the transmission gear 4 is completely avoided; Support structure 2 is fixed on the ground. Its longitudinal dimensions must be precisely designed according to actual production conditions to ensure that the milling system maintains a safe clearance from the ground at the maximum working stroke. The chamfer milling device also includes a control system, which receives execution instructions to regulate the operation of the power component; In this article, all the positional relationships we discuss about front, back, left, and right are based on Figure 1-2 These directions are defined by the perspective presented. They have no actual geographical or physical meaning. They are merely a reference framework to help readers understand the content of the article more intuitively. In this way, we can more clearly show the relative position relationship between the various parts, making the entire discussion process easier to understand and follow. Please note that this custom direction identification is only for internal use in this article and does not represent any absolute direction or position in the real world.

[0035] Reference Figure 3 、 Figure 5-11 The guide tooth plate 5 is provided with an I-shaped docking port 501 at the end adjacent to the cleaning mechanism 6. The I-shaped docking port 501 is composed of a narrow opening, a transition opening, and a wide opening from the outside to the inside, with the three-section opening structure continuously connected. When the cleaning mechanism 6 completes the milling operation on all four sides of the metal sheet and leaves the workpiece surface, the I-shaped docking port 501 has moved horizontally 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. The supporting mechanism 7 consists of a supporting frame 701, a lateral inspection cover 702, and a limiting pulley assembly 703. The supporting frame 701 has a double-layer symmetrical compartment, each compartment is equipped with a milling assembly 11. Removable lateral inspection covers 702 are provided on both sides of the supporting frame 701 to facilitate maintenance of the components within the compartment. A limiting pulley assembly 703 is installed at the axial center of the supporting frame 701 near the main frame 1. The limiting pulley assembly 703 is connected to the guide rail of the main frame 1 in a limiting sliding manner, ensuring that the supporting mechanism 7 can achieve smooth linear motion along the track. 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 in the cabin of the carrier 701, with the milling cutter 1102 assembled on its output shaft end. Second hydraulic cylinders 1103 are symmetrically mounted on the upper cabin top wall and the lower cabin bottom wall. 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, that is, the distance between the upper and lower milling cutters 1102, can be adjusted, thereby achieving dynamic control of the milling depth of the milling cutter 1102. The lubricating 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 delivery pipe 806, an oil inlet pipe 807 and a locking pin plug-in 808, wherein the adjusting beam 801 is arranged on the inner side of the supporting mechanism 7 and its side away from the plate is connected to the piston guide rod 802 passing through the supporting frame 701, the spring 803 is sleeved on the surface of the piston guide rod 802 and is located outside the supporting mechanism 7, and the left and right ends of the adjusting beam 801 are rotatably connected to the oiling roller 804 located next to the milling assembly 11 through bearings, and the oiling roller 804 is arranged axially parallel to the milling cutter 1102; the supporting mechanism Two oil distribution boxes 805 are symmetrically arranged on the top and bottom of the 7, and each oil distribution box 805 is connected to the lubricating oil and coating oil supply sources respectively through an oil inlet pipe 807. The piston guide rod 802 passes through the left and right oil distribution boxes 805, and its side wall is provided with a guide hole that can be aligned and connected to the inner cavity of the oil distribution box 805. One end of the oil delivery pipe 806 is rotatably connected to the oiling roller 804, and the other end is connected to the end of the inner cavity of the oil distribution box 805 that controls the discharge of liquid. The inner walls of the upper and lower adjustment beams 801 are equipped with lock pin inserts 808 that can be inserted into each other, and the lock pin inserts 808 are located between the milling cutter 1102 and the oiling roller 804. The telescopic drive 9 includes a first hydraulic cylinder 901 and a pressure plate 902, wherein the first hydraulic cylinder 901 is installed outside the supporting mechanism 7 and its telescopic end is connected to the pressure plate 902, and the pressure plate 902 is in contact with the top of the piston guide rod 802; the telescopic drive 9 can also be replaced by other pressing mechanisms.

[0036] In this embodiment, it should be specifically noted that the side walls of the carrier 701 and the adjustment beam 801 are both provided with guide grooves perpendicular to the axis of the milling cutter 1102. 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 adjustment beam 801; and no motion interference occurs between the adjustment beam 801 and the power output of the servo motor 1101 during the full stroke movement. The supporting mechanism 7 can be connected to the wall through the rebound device 10. The rebound device 10 can be selected as an elastic member that can generate elastic potential energy. After the whole process is completed, the lock between the milling system and the guide tooth plate 5 is first released. At this time, the rebound device 10 will play a role, and under the action of its elastic force, the entire system will be pulled back to the initial position smoothly, reducing the reset process. The oiling roller 804 and the milling cutter 1102 are arranged coplanarly. The interior of the oiling roller 804 is a hollow cavity, and an annular groove is machined on the end surface of the roller. The inner wall of the annular groove is provided with an oil drain hole connected to the hollow cavity. The working surface of the groove is inlaid with a flexible coating layer. When the I-shaped docking port 501 reaches the docking area, that is, when the I-shaped docking port 501 is aligned with the milling system, the locking pin insert 808 is precisely aligned with the upper and lower sides of the narrow opening of the I-shaped docking port 501. At the same time, the oiling roller 804 is precisely aligned with the upper and lower sides of the wide opening of the I-shaped docking port 501. The milling cutter 1102 is precisely aligned with the upper and lower sides of the transition opening of the I-shaped docking port 501, creating precise alignment conditions for the combined connection of the lubricating coating assembly 8 and the guide gear plate 5. Of the two locking pin plug-ins 808 arranged in the same longitudinal axis, one is a hollow structure and the other can be smoothly inserted into it to achieve insertion; the movement trajectory of the cleaning mechanism 6 and the locking pin plug-in 808 adopt a spatial staggered layout design, that is, the movement trajectories of the two are set in parallel, thereby effectively avoiding interference between the two during movement.

[0037] Working principle of the present invention: First, the operator suspends the metal sheet in the processing area inside the main frame ‌1 and starts the positioning clamping assembly 3 to perform the positioning operation; the specific implementation method is: the telescopic end of the electric push rod 301 drives the electric clamp 302 to extend toward the side wall of the sheet, so that the side edge of the sheet is accurately embedded in the jaws of the electric clamp 302; then the electric clamp 302 performs the jaw locking action, and the positioning clamping assembly 3 arranged symmetrically on the left and right works together to achieve reliable clamping of the metal sheet; this positioning system ensures that the sheet is stably suspended in the center of the processing area, providing an accurate operating 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 always maintain a non-contact state, and a gap space is reserved between the two 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-in 808 adopt a spatial staggered layout design, that is, the two are arranged in parallel, thereby effectively avoiding interference between the two during movement; Then, the driving device is started, which transmits the torque to any one of the transmission gears 4, and transmits the power outward to the two guide tooth plates 5 through the two meshing transmission gears 4. 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, and at the same time drive the cleaning mechanism 6 connected to the left end of the guide tooth plate 5 to move in coordination, so as to continuously approach the side of the transmission gear 4. The cleaning mechanism 6 gradually approaches the metal plate and slides to the edge of its surface. 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 in the extension direction of the plate, automatically remove surface dust, and create ideal pretreatment conditions for subsequent oiling, lubrication and coating processes. When the I-shaped docking port 501 on the surface of the guide tooth plate 5 slides to the docking area (such as Figure 12The cleaning mechanism 6 has completed the cleaning operation of the four edges of the metal sheet and separated from the surface of the sheet. At this time, the locking pin plug 808 is accurately positioned on the upper and lower sides of the narrow opening of the I-shaped docking interface 501. 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 docking interface 501. The milling cutter 1102 is accurately positioned on the upper and lower sides of the transition port of the I-shaped docking interface 501, creating a precise alignment condition for the combined connection of the lubricating coating assembly 8 and the guide tooth plate 5. The specific execution process is as follows: After the I-shaped docking interface 501 is aligned with the milling system, the first hydraulic cylinders 901 on the upper and lower sides of the milling system are started synchronously, and their telescopic ends drive the connected pressure plates 902 to perform the recovery action. During the recovery process, the pressure plates 902 press the piston guide rod 802 and compress the spring 803, driving the connected adjustment beam 801 and the oiling roller 804 and the lock pin plug-in 808 assembled thereon to move toward the metal plate as a whole, ultimately achieving: the adjacent ends of the oiling rollers 804 on the upper and lower sides enter the wide opening of the I-shaped docking interface 501 and accurately The locking pins 808 on the upper and lower sides of the plate are precisely aligned with the plane where the upper and lower edges of the plate are located, and at the same time, the locking pins 808 on the upper and lower sides pass through the narrow opening of the I-shaped interface 501 to achieve plug-in matching; this combined state allows an open space to be maintained between the corresponding oiling rollers 804 and the milling cutter 1102 on the upper and lower sides, ensuring that subsequent processing operations are not interfered with; in particular, the locking pins 808 inserted in the narrow opening can form a linkage with the horizontally moving guide tooth plate 5, thereby providing a stable propulsion power for the entire milling system; the special design of this system is that: when the piston guide rod 802 moves toward the plate When the sheet moves in the direction of the workpiece, the guide holes 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 coating oil to be respectively delivered to the corresponding oil distribution box 805 cavity through the oil inlet pipe 807, and then divided into the left and right oiling rollers 804 through the oil delivery pipe 806. Finally, the oil will evenly penetrate into the flexible coating layer on its surface through the special oil discharge holes at the end of the oiling roller 804, providing pre-prepared lubrication conditions for subsequent sheet processing and coating treatment of the cut part after processing; After completing the precise docking of the milling system and the guide tooth plate 5, the control system instructs the drive device to execute reverse output, and drives the guide tooth plate 5 and the lubricating coating assembly 8 connected thereto to move smoothly to the left as a whole through the transmission gear 4 transmission mechanism; as the milling system gradually approaches the metal plate and is located at the edge of its surface, the started servo motor 1101 drive unit immediately drives the milling cutter 1102 to rotate at high speed, and by adjusting the extension and contraction amount 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, so as to accurately control the milling depth of the milling cutter 1102, that is, the chamfer radius size; the system can perform synchronous chamfering processing on the upper and lower four edges on the plate travel path: the oiling roller 804 on the left performs pre-lubrication treatment on the contacted plate edge, and the oiling roller 804 on the right performs instant coating protection on the edge that has been chamfered. The entire processing process continues until the milling system completely leaves the plate surface, completing the full process processing of the workpiece; After the entire process is completed, the positioning clamping assembly 3 releases the fixed constraint on the plate, and the operator can remove the processed plate. At this time, the system provides two reset methods: Method 1: The driving device drives the milling system again to perform the reset action. After the milling system is completely reset, the connection lock between it and the guide tooth plate 5 is released; Method 2: First release the connection lock between the milling system and the guide tooth plate 5. At this time, the rebound device 10 will automatically play a role, and under the action of elastic force, the entire system will rebound smoothly to the initial position.

[0038] Both reset methods ensure that the system returns safely to its initial position, ready for the next machining cycle.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or modifications within the technical scope disclosed by the present invention; according to the technical plan and its improved conception of the present invention, these 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) mounted on the left and right ends of the main frame (1), positioning clamping assemblies (3) are mounted on the left and right ends of the upper portion of the main frame (1), a driving device and a matching transmission device are provided at one inner end 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 guide tooth plate (5) is arranged parallel to the longitudinal direction on the inner side of the main frame (1), and a symmetrically distributed cleaning mechanism (6) is installed on the end of the guide tooth plate (5) away from the transmission device. The guide tooth plate (5) is provided with a shape docking interface (501). When the shape docking 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; the milling system consists of a supporting mechanism (7) slidingly arranged on the outer side of the main frame (1), a milling assembly (11) assembled on the upper and lower sides of the supporting mechanism (7), a lubricating coating assembly (8) arranged on the upper and lower sides of the inner side of the supporting mechanism (7), and a telescopic driver (9) arranged outside the lubricating coating assembly (8); The lubricating coating assembly (8) comprises an adjusting beam (801), a piston guide rod (802), a spring (803), an oiling roller (804), an oil distribution box (805), an oil delivery pipe (806), an oil inlet pipe (807) and a locking pin plug-in (808), wherein the adjusting beam (801) is arranged on the inner side of the bearing mechanism (7) and its side away from the plate is 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 is located outside the bearing mechanism (7), and the left and right ends of the adjusting beam (801) are rotatably connected to the oiling roller (804) located on the side of the milling assembly (11) through bearings, and the oiling roller (804) is parallel to the axial direction of the milling assembly (11). Arrangement; two oil distribution boxes (805) arranged on the left and right are symmetrically arranged at the top and bottom of the bearing mechanism (7), 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 has a guide hole on its side wall that can be aligned and connected with the inner cavity of the oil distribution box (805); one end of the oil delivery pipe (806) is rotatably connected to the oiling roller (804), and the other end is connected to the end of the inner cavity of the oil distribution box (805) for controlling the discharge of liquid flow; the inner side walls of the upper and lower adjustment beams (801) are equipped with lock pin plugs (808) that can be plugged into each other, and the lock pin plug (808) is arranged between the milling assembly (11) and the oiling roller (804).

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

3. The chamfering milling device for metal plates according to claim 2, characterized in that: The milling assembly (11) is composed of a servo motor (1101), a milling cutter (1102) and a second hydraulic cylinder (1103); wherein the servo motor (1101) is located in the cabin of the carrier (701), and the milling cutter (1102) is assembled on the output shaft end of the servo motor (1101); the second hydraulic cylinder (1103) is symmetrically installed on the upper cabin top wall and the lower cabin bottom wall, 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 carrier (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 milling device for metal plates according to claim 3, characterized in that: The guide tooth plate (5) is provided with an I-shaped docking interface (501) at the end adjacent to the cleaning mechanism (6), which is composed of a narrow opening, a transition opening and a wide opening from the outside to the inside, and the three-section opening structure is continuously connected; when the I-shaped docking interface (501) is aligned with the milling system, the locking pin plug (808) is accurately positioned on the upper and lower sides of the narrow opening of the I-shaped docking 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 docking interface (501), and the milling cutter (1102) is accurately positioned on the upper and lower sides of the transition opening of the I-shaped docking interface (501).

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

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

7. The chamfering milling device for metal plates 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 beams, wherein the beam installation position is arranged at a position offset from the lower edge of the guide rail, thereby providing the metal plate with the required retreat space for suspension; the guide tooth plate (5) is close to the top of the beam, and a dovetail-shaped slide is provided near the inner wall of the main frame (1), and the side wall of the main frame (1) is provided with a slide rail adapted to the dovetail-shaped slide, and the guide tooth plate (5) and the bottom wall of the metal plate suspended in the processing area are non-contact, and a gap space is reserved between the two for the cleaning mechanism (6) to slide smoothly.

8. The chamfering milling device for metal plates according to claim 1 or 7, characterized in that: The cleaning mechanism (6) is composed of a connecting block and cleaning strips attached to the upper and lower walls of the metal plate. The connecting block and the upper and lower cleaning strips are combined to form a U-shaped structure. Cleaning bristles are provided on the side of the cleaning strip close to the metal plate. The connecting block is detachably mounted on the guide tooth plate (5).

9. The chamfering milling device for metal plates according to claim 1, characterized in that: The positioning clamping assembly (3) is composed of an electric push rod (301) fixedly mounted 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 suspension position is located 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 the metal plate.

10. The chamfering milling device for metal plates according to claim 1, characterized in that: The telescopic drive (9) comprises a first hydraulic cylinder (901) and a pressure plate (902), wherein the first hydraulic cylinder (901) is installed outside the supporting 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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