Metal plate chamfering and milling method

Abstract

The invention discloses a metal plate chamfering and milling method, and relates to the technical field of chamfering and milling, and the method comprises the following steps: S1, following milling: enabling a conical tooth milling cutter to adapt to contour changes of four side edges within one circle of rotation of a plate through a profiling plate and an elastic following assembly, and completing chamfering forming of upper and lower edges of all the side edges at one time; s2, uniform milling is conducted, periodic separation and closing of an upper bevel-tooth milling cutter and a lower bevel-tooth milling cutter are achieved through a concave-convex sliding block and a sliding separation assembly, cutting points are periodically migrated on the conical surface, and uniform abrasion distribution and chip breakage are achieved; and S3, multi-point fixing is conducted, distributed negative pressure is formed between the multiple supporting cylinders and the plate through cooperation of the lower pressing grooves and the lower pressing blocks, and full-area adsorption and fixing of the plate are achieved. By means of the method, chamfering of the upper and lower edges of the four edges of the plate can be completed at a time, repeated clamping errors are avoided, and machining efficiency is improved; and meanwhile, uniform abrasion and stable cutting of the cutter are achieved, machining vibration is effectively restrained through multi-point negative pressure adsorption, and the chamfering quality is improved.

Description

Technical Field

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

[0002] Sheet metal, as a flat and multifunctional flat material, is widely sourced from raw materials such as wood and metal, and is produced through fine processing. Its excellent processing performance and flexibility of use make it widely used in various fields such as chemical engineering, container manufacturing, construction, metal products, and metal structures. However, in practical applications, sheet metal often needs to be cut into specific shapes according to requirements, but this process often results in the generation of sharp burrs on the edges, which not only affects the final product's performance but may also pose safety hazards to operators. Therefore, chamfering and grinding the edges of sheet metal is a necessary step to eliminate burrs and improve both safety and aesthetics.

[0003] In sheet metal processing, existing chamfering equipment generally includes the following types: handheld chamfering machines and tabletop chamfering machines. Handheld chamfering machines are very inconvenient to use, as the chamfering quality relies entirely on manual operation, making it difficult to guarantee quality and ensuring uniform edges. Tabletop chamfering machines are generally single-sided chamfering devices; after chamfering one edge, the sheet metal needs to be flipped over to chamfer the other edge. For sheets requiring chamfering on both sides or even all four sides, the operator must manually flip, reposition, and clamp multiple times. This repetitive operation is not only inefficient but also introduces cumulative positioning errors during multiple clamping operations, resulting in inconsistent chamfering dimensions and poor symmetry, failing to meet the precision manufacturing requirements for high consistency. Summary of the Invention

[0004] The purpose of this invention is to provide a method for chamfering and milling metal sheets to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a method for chamfering and milling metal sheets, comprising the following steps:

[0006] S1: Follow milling, place the material to be processed on the drive seat, start motor two to drive the bevel milling cutter to cut into the edge of the material to the preset depth, then start motor one to drive the profile plate and the material to rotate synchronously, and through the elastic follow component to keep the follow rod always in contact with the edge of the profile plate, converting the radial change of the profile plate contour into the forward and backward movement of the follow rod, driving the bevel milling cutter to continuously adapt to the contour change of its four sides within one rotation of the material, and complete the chamfering of all the upper and lower edges of the sides in one go;

[0007] S2: Uniform milling. During the following milling process, the convex and concave sliders at the bottom of the following rod drive its periodic rise and fall. With the help of the tension spring and the inclined surface of the support rod, the support rod produces a secondary micro-amplitude forward and backward displacement. This displacement is transmitted to the trigger rod through connecting rod one and connecting rod two. Its conical trigger head slides in the semi-circular groove, squeezing the support frame to overcome the elastic force of spring two, forcing the two spline sleeves to slide in opposite directions along the spline section of the rotating shaft. This enables the upper and lower bevel milling cutters to periodically separate and approach while continuously rotating and milling, so that the cutting point periodically migrates on its conical surface, achieving uniform wear distribution and chip breakage.

[0008] S3: Multi-point fixation. In the initial stage of the drive seat rotation, the pressure groove fixed on the chassis contacts the inclined surface of the pressure block on the milling table, forcing the chassis to overcome the three elastic forces of the spring and move downward, driving multiple pull rods to pull down the support cylinder synchronously, so that the sealing gasket at the top of the cylinder fits against the bottom surface of the plate to form a sealed cavity. During the continuous rotation of the drive seat, the pressure block is stuck into the pressure groove to maintain the downward pressure state, forming a distributed negative pressure between multiple support cylinders and the plate, realizing the full-area adsorption and fixation of the plate.

[0009] Preferably, the elastic following component in step S1 includes a sliding column, a spring, and a pressing block. The pressing block presses against the following rod under the elastic force of the spring, keeping it in close contact during the rotation of the profile plate, thereby realizing the radial advance and retraction movement of the bevel milling cutter.

[0010] Preferably, a sliding lifting assembly is used in step S2. The sliding lifting assembly includes a support base, a limiting groove, a tension spring, a concave-convex slider, and a lifting groove. By following the rod and moving it up and down on the wavy trajectory of the concave-convex slider, the support rod is driven to generate a secondary micro-displacement, which in turn controls the trigger rod to drive the bevel milling cutter to achieve axial sliding.

[0011] Preferably, the milling table used has an internal cavity, a drive seat is rotatably connected to the bottom inner wall of the milling table, a processing plate is placed on the top of the drive seat, and a bevel milling cutter is respectively provided on the upper and lower edges of one side of the processing plate.

[0012] The inner wall of the cavity is provided with a following forming component. The following forming component includes a motor fixedly installed on the inner wall at the bottom of the cavity. A contour plate is fixedly connected to the outer wall of the output shaft of the motor. The output shaft of the motor is fixedly connected to the bottom of the drive seat. A sliding groove is opened through the top inner wall of the cavity. A following rod is slidably connected to the inner wall of the sliding groove. The outer wall of the following rod is slidably attached to the outer wall of the contour plate through an elastic following component. When the contour plate rotates, two oppositely arranged bevel milling cutters will move radially forward and backward through the elastic following component.

[0013] It also includes a uniform milling component, which includes spline sleeves that are fixedly connected to the interior of two bevel milling cutters. The outer walls of the two spline sleeves are provided with sliding separation components. A support rod is provided at the top of the follower rod, and an inclined surface is provided at one end of the bottom side of the support rod. When the profile plate rotates, the follower rod will drive the support rod to move back and forth a second time through the sliding lifting component. At this time, the two bevel milling cutters will separate up and down through the sliding separation component.

[0014] Preferably, the elastic following component includes:

[0015] A sliding column has two ends fixedly connected to the inner wall of a sliding groove, and a spring is fitted to the outer wall of the sliding column. One end of the spring is fixedly connected to the inner wall of the sliding groove, and the other end of the spring is fixedly connected to a pressing block. The inner wall of the pressing block is slidably connected to the outer wall of the sliding column, and one end of the pressing block is pressed against the outer wall of the following rod by the spring.

[0016] Preferably, a second motor is fixedly installed on the top of the support rod, and one end of the output shaft of the second motor is fixedly connected to a rotating shaft corresponding to two bevel milling cutters.

[0017] Preferably, the sliding separation component includes:

[0018] Two support frames are rotatably connected to the outer walls of the opposite ends of two splined sleeves. The inner walls of the splined sleeves are slidably connected to the outer wall of the rotating shaft in a spline manner. A connecting rod 1 is fixedly connected to one outer wall of the following rod, and a connecting rod 2 is fixedly connected to the other end of the connecting rod 1. Mounting brackets are rotatably connected to the outer walls of both ends of the rotating shaft. A trigger rod is fixedly connected to the side of the connecting rod 2 facing the mounting bracket. The inner wall of the mounting bracket is slidably connected to the outer wall of the trigger rod. Semicircular grooves are respectively opened on the side of the two support frames facing each other corresponding to the trigger rod. A trigger head is fixedly connected to the end of the trigger rod away from the connecting rod 2, and the trigger head is conical in shape. Spring 2 is fixedly connected to the upper and lower inner walls of the mounting bracket, and the opposite ends of the two spring 2 are respectively fixedly connected to the opposite sides of the two support frames.

[0019] Preferably, the sliding lifting assembly includes:

[0020] A support base is provided, the top of which is fixed to the bottom side of one end of the support rod. A limiting groove is provided on the bottom inner wall of the milling table corresponding to the support base, and the bottom of the support base is slidably connected to the inner wall of the limiting groove. The bottom of the support base is inverted T-shaped. A tension spring is fixedly connected to the inner wall of the limiting groove. The other end of the tension spring is fixedly connected to the side of the support base away from the follower rod. A concave-convex slider is fixedly connected to the bottom inner wall of the inner cavity. The top of the concave-convex slider is wavy. The bottom of the follower rod is slidably connected to the top of the concave-convex slider. A lifting groove is provided on the side wall of the follower rod corresponding to the sliding column.

[0021] Preferably, the outer wall of the drive seat is provided with an adaptation and fixing component, which includes three support blocks fixedly connected to the outer wall of the drive seat. The inner wall of the support block is fixedly connected to a support cylinder, and the inner wall of the support cylinder is slidably connected to a pull rod. The bottom of each of the three pull rods is fixedly connected to a chassis, and the inner wall of the chassis is slidably connected to the outer wall of the drive seat. The bottom inner wall of the milling table is fixedly connected to an installation rod, and a pressing block is fixedly connected to one side of the top of the installation rod. The bottom of the pressing block is inclined, and a pressing groove is opened on one side of the outer wall of the chassis corresponding to the pressing block.

[0022] The outer wall of the drive seat is provided with a spring three. The bottom of the spring three is fixedly connected to the bottom inner wall of the milling table. The top of the spring three is pressed against the bottom of the chassis. The top of the support cylinder is equipped with a sealing gasket.

[0023] Preferably, a vacuum cleaner is fixedly installed on the top of the milling table.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. When chamfering metal sheets, the motor and drive base synchronously drive the sheet and the profile plate to rotate. During the chamfering of the upper and lower edges of one side of the sheet by two opposing bevel milling cutters, the radial movement of the follower rod is converted into the radial advance and retraction motion of the bevel milling cutter relative to the edge of the sheet by the outward pushing of the profile plate and the inward movement of the spring. This allows the upper and lower edges of all four sides to be chamfered automatically in one rotation of the sheet, eliminating the reference conversion error caused by multiple clamping and realizing continuous chamfering milling of the edges of the sheet, thus ensuring the efficiency of chamfering milling of metal sheets.

[0026] 2. When chamfering metal sheets, to avoid the situation where only a very narrow area on the cone surface of a traditional milling cutter continuously participates in cutting, leading to rapid wear and concentrated temperature in that area, a follower rod and a sliding block are used to allow the two bevel milling cutters to move back and forth evenly in a secondary, minute forward and backward motion, in addition to the follower-type forward and backward movement. Combined with the support frame and trigger head, this allows for vertical separation and sliding, ensuring a constant cutting depth at the contact point with the sheet metal edge. This actively and evenly distributes the milling load across the entire effective area of ​​the cutter cone surface, preventing annealing or built-up edge at the cutter tip due to high temperatures, stabilizing chamfering milling performance, breaking continuous chips, and solving the problem of long chip entanglement, thus ensuring the quality of chamfering milling on metal sheets.

[0027] 3. When chamfering metal sheets, the drive seat rotates the chassis, which, through the cooperation of the pressure block and the pressure groove, automatically moves the pull rods in the three support cylinders downward. This utilizes negative pressure to automatically fix the non-machined area of ​​the bottom of the sheet at multiple points during processing, applying clamping force to the large non-machined bottom surface of the sheet and fully exposing all four sides. This provides absolutely free physical space for the tool's continuous, interference-free movement, providing a uniformly distributed suction force for the sheet, especially large or thin sheets. This support method effectively suppresses the slight vibration caused by the lateral cutting force generated during chamfering, thus ensuring the quality of chamfering milling of metal sheets. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the chamfering milling process of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the milling table of the present invention;

[0031] Figure 4 This is a schematic diagram illustrating the kinematic relationship between the contour plate and the follower rod in this invention.

[0032] Figure 5 This is a structural schematic diagram showing the installation positions of the support base, the concave and convex sliders, and the trigger rod of the present invention;

[0033] Figure 6 This is a schematic diagram showing the installation position of the bevel milling cutter and spline sleeve of the present invention;

[0034] Figure 7 This is a schematic diagram illustrating the kinematic relationship between the chassis and the lower pressure block of the present invention.

[0035] In the diagram: 1. Milling table; 2. Inner cavity; 6. Vacuum cleaner; 3. Following forming component; 301. Motor 1; 302. Drive base; 303. Processing sheet; 304. Profile plate; 305. Sliding groove; 306. Following rod; 307. Support rod; 308. Motor 2; 309. Rotating shaft; 310. Bevel end mill; 311. Sliding column; 312. Spring 1; 313. Pressing block; 4. Uniform milling component; 401. Spline sleeve; 402. Support frame; 403. Spring 2; 4 04. Semicircular groove; 405. Support base; 406. Limiting groove; 407. Tension spring; 408. Concave-convex slider; 409. Lifting groove; 410. Connecting rod one; 411. Connecting rod two; 412. Trigger rod; 413. Mounting bracket; 414. Trigger head; 5. Adaptive fixing component; 501. Support block; 502. Support cylinder; 503. Pull rod; 504. Chassis; 505. Lower pressure groove; 506. Mounting rod; 507. Lower pressure block; 508. Spring three; 509. Sealing gasket. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] For examples, please refer to Figures 1-7 This invention provides a method for chamfering and milling metal sheets, comprising the following steps:

[0038] S1: Follow-up milling. Place the workpiece 303 on the drive seat 302. Start motor 2 308 to drive the bevel milling cutter 310 to cut into the edge of the workpiece to the preset depth. Then start motor 1 301 to drive the profile plate 304 to rotate synchronously with the workpiece. The follower rod 306 is always in contact with the edge of the profile plate 304 through the elastic follower component. The radial change of the profile plate contour is converted into the forward and backward movement of the follower rod. The bevel milling cutter continuously adapts to the contour change of the four sides within one rotation of the workpiece, and completes the chamfering of all the upper and lower edges of the sides in one go.

[0039] Furthermore, the milling table 1 has an inner cavity 2 inside, and a drive seat 302 is rotatably connected to the bottom inner wall of the milling table 1. A processing plate 303 is placed on the top of the drive seat 302, and a bevel milling cutter 310 is respectively provided on the upper and lower edges of one side of the processing plate 303.

[0040] The inner wall of the inner cavity 2 is provided with a following forming component 3. The following forming component 3 includes a motor 301 fixedly installed on the bottom inner wall of the inner cavity 2. A contour plate 304 is fixedly connected to the outer wall of the output shaft of the motor 301. The output shaft of the motor 301 is fixedly connected to the bottom of the drive seat 302. A sliding groove 305 is provided through the top inner wall of the inner cavity 2. A following rod 306 is slidably connected to the inner wall of the sliding groove 305. The outer wall of the following rod 306 is slidably attached to the outer wall of the contour plate 304 through an elastic following component.

[0041] A second motor 308 is fixedly installed on the top of the support rod 307. One end of the output shaft of the second motor 308 is fixedly connected to a rotating shaft 309 corresponding to two bevel milling cutters 310.

[0042] Specifically, in step S1, when chamfering the metal sheet, the sheet 303 to be processed is first placed on the drive base 302, with one side in contact with two bevel milling cutters 310. The motor 2 308 drives the two bevel milling cutters 310 to mill the initial chamfer depth. Then, the motor 1 301 is started. A contour plate 304 is fixedly connected to the outer wall of one output shaft of the motor 1 301. One output shaft of the motor 1 301 is fixedly connected to the bottom of the drive base 302, allowing the motor 1 301 to drive the contour plate 304 and the sheet 303 to rotate synchronously. At this time, a sliding groove 305 is formed through the top inner wall of the inner cavity 2, and the inner wall of the sliding groove 305 is slidably connected to a... The outer wall of the follower rod 306 slides against the outer wall of the profile plate 304 through an elastic following component. When the profile plate 304 rotates, it can squeeze the follower rod 306 to make it retract. When it passes the four corners of the processing plate 303, the elastic following component makes it spring back and move inward. The radial movement of the follower rod 306 is converted into the radial advance and retraction movement of the bevel milling cutter 310 relative to the edge of the processing plate 303. This allows the upper and lower edges of all four sides to be chamfered automatically in one rotation of the processing plate 303, eliminating the reference conversion error caused by multiple clamping and realizing continuous chamfering milling of the edges of the processing plate 303, thus ensuring the efficiency of chamfering milling of metal plates.

[0043] Furthermore, in step S1, the elastic following component includes a sliding column 311, a spring 312, and a pressing block 313. Under the elastic force of the spring 312, the pressing block 313 always presses against the following rod 306, so that it remains in close contact during the rotation of the contour plate 304, thereby realizing the radial advance and retraction movement of the bevel end mill 310.

[0044] The elastic follow component includes:

[0045] The sliding column 311 has its two ends fixedly connected to the inner wall of the sliding groove 305, and a spring 312 is attached to the outer wall of the sliding column 311. One end of the spring 312 is fixedly connected to the inner wall of the sliding groove 305, and the other end of the spring 312 is fixedly connected to a pressing block 313. The inner wall of the pressing block 313 is slidably connected to the outer wall of the sliding column 311, and one end of the pressing block 313 is pressed against the outer wall of the following rod 306 by the spring 312.

[0046] Specifically, when the follower rod 306 moves backward, it can press the abutment block 313 connected to the spring 312 backward, so that after passing a certain corner of the processed plate 303, the spring force of the spring 312 can drive the follower rod 306 to move forward and inward, thus realizing the following movement.

[0047] S2: Uniform milling. During the follow milling process, the follow rod 306 is driven to rise and fall periodically by the concave and convex slider 408 at the bottom. With the help of the tension spring 407 and the inclined surface of the support rod 307, the support rod produces a secondary micro-amplitude forward and backward displacement. This displacement is transmitted to the trigger rod 412 through the connecting rod 1 410 and the connecting rod 2 411. Its conical trigger head 414 slides in the semi-circular groove 404, squeezing the support frame 402 to overcome the elastic force of the spring 2 403, forcing the two spline sleeves 401 to slide in opposite directions along the spline section of the rotating shaft 309. This enables the upper and lower bevel milling cutters to periodically separate and approach while continuously rotating and milling, so that the cutting point migrates periodically on its conical surface, achieving uniform wear distribution and chip breakage.

[0048] Furthermore, it also includes a uniform milling component 4, which includes spline sleeves 401 that are fixedly connected to the inside of two bevel milling cutters 310 respectively. The outer walls of the two spline sleeves 401 are provided with sliding separation components. A support rod 307 is provided at the top of the follower rod 306, and a slope is provided at one end of the bottom side of the support rod 307.

[0049] The sliding separation assembly includes:

[0050] Two support frames 402 are rotatably connected to the outer walls of the far ends of two splined sleeves 401, respectively. The inner walls of the splined sleeves 401 are slidably connected to the outer wall of the rotating shaft 309 in a spline manner. A connecting rod 410 is fixedly connected to one outer wall of the following rod 306, and a connecting rod 411 is fixedly connected to the other end of the connecting rod 410. Mounting brackets 413 are rotatably connected to the outer walls of both ends of the rotating shaft 309, and a trigger rod is fixedly connected to the side of the connecting rod 411 facing the mounting bracket 413. 412, the inner wall of the mounting bracket 413 is slidably connected to the outer wall of the trigger rod 412, and the two support brackets 402 are respectively provided with semi-circular grooves 404 on the side facing each other, corresponding to the trigger rod 412. The end of the trigger rod 412 away from the connecting rod 411 is fixedly connected to the trigger head 414, and the trigger head 414 is conical in shape. The upper and lower inner walls of the mounting bracket 413 are respectively fixedly connected to the springs 403, and the opposite ends of the two springs 403 are respectively fixedly connected to the opposite sides of the two support brackets 402.

[0051] Specifically, to avoid the rapid wear and temperature concentration in traditional milling cutters where only a very narrow area on the cone surface continuously participates in cutting, the two bevel milling cutters 310 located above the follower rod 306 can move back and forth a second time relative to the follower rod 306 via a sliding lifting assembly during the forward and backward movement of the follower rod 306. At this time, a connecting rod 410 is fixedly connected to one side of the outer wall of the follower rod 306, and a connecting rod 411 is fixedly connected to the other end of the connecting rod 410. Mounting brackets 413 are rotatably connected to the outer walls of both ends of the rotating shaft 309. A trigger rod 412 is fixedly connected to the side of the connecting rod 411 facing the mounting bracket 413. The inner wall of the mounting bracket 413 is slidably connected to the outer wall of the trigger rod 412. Semicircular grooves 404 are respectively opened on the sides of the two support brackets 402 facing each other, corresponding to the trigger rod 412. The trigger rod 412 is located away from the connecting rod 412. One end of rod 411 is fixedly connected to a trigger head 414, which is conical in shape. The upper and lower inner walls of the mounting bracket 413 are respectively fixedly connected to springs 403. The opposite ends of the two springs 403 are respectively fixedly connected to the opposite sides of the two support brackets 402, so that the two support brackets 402 can slide on the surface of the trigger head 414. This allows the two bevel milling cutters 310 to separate when they are closer to the workpiece 303 and to move closer to each other when they are farther away from the workpiece 303. This ensures that the cutting depth at the contact point with the edge of the workpiece remains constant and that the milling load is actively and evenly distributed over the entire effective area of ​​the cutter cone surface. This avoids annealing or built-up edge caused by high temperature at the cutter tip, stabilizes the chamfering milling performance, and can break continuous chips, solving the problem of long chip entanglement, thereby ensuring the chamfering quality of the metal sheet.

[0052] Furthermore, a vacuum cleaner 6 is fixedly installed on the top of the milling table 1. Through the spline sleeve 401 fixedly connected to the inside of the two bevel milling cutters 310, the inner wall of the spline sleeve 401 is slidably connected to the outer wall of the rotating shaft 309 in a spline manner. This allows for stable rotational milling even during the separation and sliding process of the bevel milling cutters 310. During the chamfering milling process, the vacuum cleaner 6 is used to absorb and discharge the milled debris.

[0053] Furthermore, in step S2, a sliding lifting assembly is used. The sliding lifting assembly includes a support base 405, a limiting groove 406, a tension spring 407, a concave-convex slider 408, and a lifting groove 409. By following the rod 306 to rise and fall on the wave-shaped trajectory on the surface of the concave-convex slider 408, the support rod 307 is driven to produce a secondary micro-displacement, thereby controlling the trigger rod 412 to drive the bevel milling cutter 310 to achieve axial sliding.

[0054] The sliding lifting assembly includes:

[0055] The support base 405 is fixed at its top to the bottom side of one end of the support rod 307. The bottom inner wall of the milling table 1 is provided with a limiting groove 406 corresponding to the support base 405, and the bottom of the support base 405 is slidably connected to the inner wall of the limiting groove 406. The bottom of the support base 405 is inverted T-shaped. A tension spring 407 is fixedly connected to the inner wall of the limiting groove 406. The other end of the tension spring 407 is fixedly connected to the side of the support base 405 away from the follower rod 306. A concave-convex slider 408 is fixedly connected to the bottom inner wall of the inner cavity 2. The top of the concave-convex slider 408 is wavy. The bottom of the follower rod 306 is slidably connected to the top of the concave-convex slider 408. A lifting groove 409 is provided through the side wall of the follower rod 306 corresponding to the sliding column 311.

[0056] Specifically, the top of the support base 405 is fixed to the bottom side of one end of the support rod 307. A limiting groove 406 is formed on the bottom inner wall of the milling table 1 corresponding to the support base 405, and the bottom of the support base 405 is slidably connected to the inner wall of the limiting groove 406. The bottom of the support base 405 is inverted T-shaped, thus limiting the height of the support rod 307 and preventing it from rising or falling. Then, a concave-convex slider 408 is fixedly connected to the bottom inner wall of the inner cavity 2. The top of the concave-convex slider 408 is wavy and slides along the bottom of the rod 306. The follower rod 306 is attached to the top of the concave-convex slider 408. When it slides to the concave point of the concave-convex slider 408, the follower rod 306 will move downward. At this time, the elastic force of the tension spring 407 will pull the support rod 307 to move a certain distance relative to the processing plate 303. When the follower rod 306 moves to the convex point of the concave-convex slider 408, the follower rod 306 will rise and squeeze the inclined surface of the support rod 307, so that the support rod 307 moves away from the processing plate 303 by a certain distance, thereby realizing a secondary small forward and backward movement.

[0057] Furthermore, the lifting slot 409 is used to provide lifting space for the follower rod 306.

[0058] S3: Multi-point fixation. In the initial stage of rotation of the drive seat 302, the pressure groove 505 fixed on the chassis 504 contacts the inclined surface of the pressure block 507 on the milling table 1, forcing the chassis 504 to overcome the elastic force of the spring 3 508 and move downward, driving multiple pull rods 503 to pull down the support cylinder 502 simultaneously, so that the sealing gasket 509 at its top fits against the bottom surface of the plate to form a sealed cavity; during the continuous rotation of the drive seat 302, the pressure block 507 is inserted into the pressure groove 505 to maintain the downward pressure state, forming a distributed negative pressure between multiple support cylinders 502 and the plate, realizing the full-area adsorption and fixation of the plate.

[0059] Furthermore, the outer wall of the drive seat 302 is provided with an adaptation fixing component 5. The adaptation fixing component 5 includes three support blocks 501 fixedly connected to the outer wall of the drive seat 302. The inner wall of the support block 501 is fixedly connected to a support cylinder 502. The inner wall of the support cylinder 502 is slidably connected to a pull rod 503. The bottom of each of the three pull rods 503 is fixedly connected to a chassis 504. The inner wall of the chassis 504 is slidably connected to the outer wall of the drive seat 302. The bottom inner wall of the milling table 1 is fixedly connected to an installation rod 506. The top side of the installation rod 506 is fixedly connected to a pressing block 507. The bottom of the pressing block 507 is inclined. A pressing groove 505 is opened on one side of the outer wall of the chassis 504 corresponding to the pressing block 507.

[0060] The outer wall of the drive base 302 is provided with a spring 508. The bottom of the spring 508 is fixedly connected to the bottom inner wall of the milling table 1. The top of the spring 508 is pressed and set at the bottom of the chassis 504. The top of the support cylinder 502 is equipped with a sealing gasket 509.

[0061] Specifically, a support cylinder 502 is fixedly connected to the inner wall of the support block 501, and a pull rod 503 is slidably connected to the inner wall of the support cylinder 502. The bottoms of the three pull rods 503 are all fixedly connected to a chassis 504, and the inner wall of the chassis 504 is slidably connected to the outer wall of the drive seat 302. Thus, when the drive seat 302 rotates, the pull rods 503 can drive the chassis 504 to rotate. At this time, an mounting rod 506 is fixedly connected to the bottom inner wall of the milling table 1, and a pressing block 507 is fixedly connected to one side of the top of the mounting rod 506. The bottom of the pressing block 507 is inclined, and a pressing groove 505 is formed on one side of the outer wall of the chassis 504 corresponding to the pressing block 507. Thus, through the cooperation of the pressing block 507 and the pressing groove 505, the chassis 504 can move downwards and maintain rotation, thereby driving the multiple pull rods 503 to rotate. The downward movement, combined with the setting of the sealing gasket 509, utilizes multiple support cylinders 502 to form a negative pressure adsorption fixation between the plate 303 and the processing plate. After the chamfering is completed, that is, after the lower pressure block 507 and the lower pressure groove 505 are realigned, the spring 3 508 drives the chassis 504 to rise again to release. This can automatically fix the bottom non-processed area of ​​the processing plate 303 at multiple points during the processing, applying the clamping force to the large non-processed bottom surface of the plate, completely exposing all four sides, providing absolutely free physical space for the tool's continuous movement without interference. It can provide a global and uniformly distributed adsorption force for the plate, especially large or thin plates. This support method can effectively suppress the slight vibration caused by the lateral cutting force generated by the chamfering of the edges during the processing, thereby ensuring the chamfering milling quality of the metal plate.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for chamfering and milling metal sheets, characterized in that, Includes the following steps: S1: Follow-up milling, place the plate to be processed (303) on the drive seat (302), start motor two (308) to drive the bevel milling cutter (310) to cut into the edge of the plate to the preset depth, then start motor one (301) to drive the profile plate (304) to rotate synchronously with the plate, and through the elastic follow component, make the follow rod (306) always fit the edge of the profile plate (304), convert the radial change of the profile of the profile plate into the forward and backward movement of the follow rod, drive the bevel milling cutter to continuously adapt to the profile change of its four sides within one rotation of the plate, and complete the chamfering of all the upper and lower edges of the sides in one go; S2: Uniform milling. During the following milling process, the concave and convex slider (408) at the bottom of the following rod (306) drives its periodic lifting and lowering. With the help of the tension spring (407) and the inclined surface of the support rod (307), the support rod produces a secondary micro-amplitude forward and backward displacement. This displacement is transmitted to the trigger rod (412) through the connecting rod one (410) and the connecting rod two (411). Its conical trigger head (414) slides in the semi-circular groove (404), squeezing the support frame (402) to overcome the elastic force of the spring two (403), forcing the two spline sleeves (401) to slide in opposite directions along the spline section of the rotating shaft (309). This enables the upper and lower bevel milling cutters to periodically separate and approach while continuously rotating and milling, so that the cutting point periodically migrates on its conical surface, achieving uniform wear distribution and chip breakage. S3: Multi-point fixation. In the initial stage of the rotation of the drive seat (302), the pressure groove (505) fixed on the chassis (504) contacts the inclined surface of the pressure block (507) on the milling table (1), forcing the chassis (504) to overcome the elastic force of the spring three (508) and move down, driving multiple pull rods (503) to pull down the support cylinder (502) simultaneously, so that the sealing gasket (509) on its top fits against the bottom surface of the plate to form a sealed cavity; during the continuous rotation of the drive seat (302), the pressure block (507) is inserted into the pressure groove (505) to maintain the pressure state, forming a distributed negative pressure between multiple support cylinders (502) and the plate, realizing the full-area adsorption and fixation of the plate.

2. The method for chamfering and milling metal sheets according to claim 1, characterized in that, The elastic following component in step S1 includes a sliding column (311), a spring (312), and a pressing block (313). The pressing block (313) presses against the following rod (306) under the elastic force of the spring (312), so that it remains in close contact with the profile plate (304) during rotation, thereby realizing the radial advance and retraction movement of the bevel end mill (310).

3. A method for chamfering and milling metal sheets according to claim 1 or 2, characterized in that, In step S2, a sliding lifting assembly is used. The sliding lifting assembly includes a support base (405), a limiting groove (406), a tension spring (407), a concave-convex slider (408), and a lifting groove (409). The follower rod (306) moves up and down on the wave-shaped trajectory on the surface of the concave-convex slider (408), driving the support rod (307) to generate a secondary micro-displacement, thereby controlling the trigger rod (412) to drive the bevel milling cutter (310) to achieve axial sliding.

4. The method for chamfering and milling metal sheets according to claim 1, characterized in that, The milling table (1) used is provided with an inner cavity (2) inside. A drive seat (302) is rotatably connected to the bottom inner wall of the milling table (1). A processing plate (303) is placed on the top of the drive seat (302). A bevel end mill (310) is provided on the upper and lower edges of one side of the processing plate (303). The inner wall of the inner cavity (2) is provided with a following forming component (3). The following forming component (3) includes a motor (301) fixedly installed on the bottom inner wall of the inner cavity (2). A contour plate (304) is fixedly connected to the outer wall of the output shaft of the motor (301). The output shaft of the motor (301) is fixedly connected to the bottom of the drive seat (302). A sliding groove (305) is opened through the top inner wall of the inner cavity (2). A following rod (306) is slidably connected to the inner wall of the sliding groove (305). The outer wall of the following rod (306) is slidably connected to the outer wall of the contour plate (304) through an elastic following component. When the contour plate (304) rotates, two oppositely arranged bevel milling cutters (310) will move radially forward and backward through the elastic following component. It also includes a uniform milling component (4), which includes a spline sleeve (401) that is fixedly connected to the inside of two bevel milling cutters (310). The outer walls of the two spline sleeves (401) are provided with sliding separation components. The top of the follower rod (306) is provided with a support rod (307). One end of the bottom side of the support rod (307) is provided with an inclined surface. When the contour plate (304) rotates, the follower rod (306) will drive the support rod (307) to move back and forth twice through the sliding lifting component. At this time, the two bevel milling cutters (310) will move up and down through the sliding separation component.

5. A method for chamfering and milling metal sheets according to claim 4, characterized in that, The elastic following component includes: A sliding column (311) is fixedly connected at both ends to the inner wall of a sliding groove (305), and a spring (312) is attached to the outer wall of the sliding column (311). One end of the spring (312) is fixedly connected to the inner wall of the sliding groove (305), and the other end of the spring (312) is fixedly connected to a pressing block (313). The inner wall of the pressing block (313) is slidably connected to the outer wall of the sliding column (311), and one end of the pressing block (313) is pressed against the outer wall of the following rod (306) by the spring (312).

6. A method for chamfering and milling metal sheets according to claim 5, characterized in that, The top of the support rod (307) is fixedly installed with a second motor (308), and one end of the output shaft of the second motor (308) is fixedly connected to a rotating shaft (309) corresponding to two bevel milling cutters (310).

7. A method for chamfering and milling metal sheets according to claim 6, characterized in that, The sliding separation component includes: Two support frames (402) are rotatably connected to the outer walls of the opposite ends of two splined sleeves (401), respectively. The inner wall of the splined sleeve (401) is slidably connected to the outer wall of the rotating shaft (309) in a spline manner. A connecting rod one (410) is fixedly connected to one side of the outer wall of the following rod (306), and a connecting rod two (411) is fixedly connected to the other end of the connecting rod one (410). Mounting brackets (413) are rotatably connected to the outer walls of both ends of the rotating shaft (309), and a connecting rod two (411) is fixedly connected to the side of the connecting rod two (411) facing the mounting bracket (413). The inner wall of the mounting bracket (413) is slidably connected to the outer wall of the trigger rod (412). The two support brackets (402) are respectively provided with semi-circular grooves (404) on the side facing each other, and the trigger rod (412) is fixedly connected to the end of the trigger rod (412) away from the connecting rod (411). The trigger head (414) is conical in shape. The upper and lower inner walls of the mounting bracket (413) are respectively fixedly connected to the springs (403). The opposite ends of the two springs (403) are respectively fixedly connected to the opposite sides of the two support brackets (402).

8. A method for chamfering and milling metal sheets according to claim 7, characterized in that, The sliding lifting assembly includes: A support base (405) is provided, the top of which is fixed to the bottom side of one end of the support rod (307). A limiting groove (406) is provided on the bottom inner wall of the milling table (1) corresponding to the support base (405), and the bottom of the support base (405) is slidably connected to the inner wall of the limiting groove (406). The bottom of the support base (405) is inverted T-shaped, and a tension spring (407) is fixedly connected to the inner wall of the limiting groove (406). The other end of the tension spring (407) is fixedly connected to the support base (405) on the side away from the follower rod (306). The bottom inner wall of the inner cavity (2) is fixedly connected to a concave-convex slider (408). The top of the concave-convex slider (408) is wavy. The bottom of the follower rod (306) is slidably connected to the top of the concave-convex slider (408). The side wall of the follower rod (306) is provided with a lifting groove (409) through the sliding column (311).

9. A method for chamfering and milling metal sheets according to claim 8, characterized in that, The outer wall of the drive seat (302) is provided with an adaptation fixing component (5). The adaptation fixing component (5) includes three support blocks (501) fixedly connected to the outer wall of the drive seat (302). The inner wall of the support block (501) is fixedly connected to a support cylinder (502). The inner wall of the support cylinder (502) is slidably connected to a pull rod (503). The bottom of each of the three pull rods (503) is fixedly connected to a chassis (504). The inner wall of the chassis (504) is slidably connected to the outer wall of the drive seat (302). The bottom inner wall of the milling table (1) is fixedly connected to an installation rod (506). The top side of the installation rod (506) is fixedly connected to a pressing block (507). The bottom of the pressing block (507) is inclined. The outer wall of one side of the chassis (504) is provided with a pressing groove (505) corresponding to the pressing block (507). The outer wall of the drive seat (302) is provided with a spring three (508), the bottom of the spring three (508) is fixedly connected to the bottom inner wall of the milling table (1), the top of the spring three (508) is pressed and disposed at the bottom of the chassis (504), and the top of the support cylinder (502) is provided with a sealing gasket (509).

10. A method for chamfering and milling metal sheets according to claim 1, characterized in that, A vacuum cleaner (6) is fixedly installed on the top of the milling table (1).

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