Profile four-edge R angle machine

Abstract

The invention relates to the technical field of profile edge milling and rounding, and discloses a profile four-edge R-angle machine which comprises a machine tool and a distance adjusting system, and a left milling system and a right milling system are arranged on the distance adjusting system in a mirror image mode. An oil supplementing and chip storing assembly and a chip cleaning assembly which are positioned in the machine tool are arranged between the left milling system and the right milling system; the left-right milling system consists of a left milling system and a right milling system which are symmetrically arranged; each of the left milling system and the right milling system consists of a sliding seat, a milling mounting frame and an adjustable milling assembly; the left milling system and the right milling system move oppositely to clamp the profile; according to profiles of different sizes, the Y-axis position or the X-axis gap of the milling machining part needs to be adjusted to meet the clamping requirement, four-corner positioning of the profiles is achieved, a cutter head is driven to rotate through a servo motor, and when the rotating cutter head makes contact with the edges of the profiles and cuts the edges of the profiles, due to the shape and the movement track of the cutter head, the clamping requirement is met. The right-angle edges of the edges of the profiles can be gradually cut into round corners, and multi-edge synchronous machining is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of profile edge milling and rounding, and more particularly to a profile four-side R-angle machine. Background Art

[0002] In the technical field of profile processing, as a key equipment for realizing the rounded transition of the edges of profiles, the technology development of four-side R-angle processing equipment has mainly experienced the evolution process from manual grinding to mechanical milling. The numerically controlled milling processing scheme commonly used in the prior art (such as the profile avoidance R-angle forming machine disclosed in CN216541042U) realizes the mechanized processing of profile R-angles to a certain extent by constructing an equipment architecture including an X / Y-axis motion platform, a clamping and flipping mechanism, and a driving cutting system. Although this technical scheme improves the clamping efficiency through structural designs such as a pneumatic pressing device and a flip-over positioning plate, it essentially still belongs to a single-tool sequential processing mode and has the following technical defects:

[0003] (1) Insufficient stability of machining accuracy: Since a single milling cutter is used to continuously machine the four edges, the tool wear amount increases cumulatively, resulting in a significant reduction in the consistency of the rounded corner size in the later stage of machining, and it is difficult to meet the process requirements of high-precision profiles;

[0004] (2) There is a bottleneck in machining efficiency: The existing equipment is restricted by problems such as the tool commutation time and the too high proportion of the idle stroke. When machining long-sized profiles, the effective cutting time only accounts for 40% - 60% of the machining cycle;

[0005] In view of the above technical problems, there is an urgent need in the industry to develop a new type of R-angle processing equipment with the ability of multi-tool collaborative processing and equipped with an on-line wear compensation system to break through the limitations of the prior art in terms of production efficiency, machining accuracy, and process adaptability. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a profile four-side R-angle machine to solve the problems of large influence of continuous tool wear and low multi-side synchronous machining efficiency existing in the above background art.

[0007] The present invention provides the following technical solution: A profile four-side R-angle machine includes a machine tool and a spacing adjustment system, and left and right milling systems are mirror-symmetrically arranged on the spacing adjustment system; between the left and right milling systems, there is an oil replenishment and chip storage assembly and a chip cleaning assembly located inside the machine tool; the left and right milling systems are composed of symmetrically arranged left and right milling systems; both the left and right milling systems are composed of a slide base, a milling installation frame, and an adjustable milling assembly;

[0008] The sliding seat drive is arranged on the spacing adjustment system, and a milling mounting frame is fixedly connected to the middle of its top. Two groups of adjustable milling assemblies arranged in central symmetry are provided on the front and rear sides of the milling mounting frame. The adjustable milling assembly is composed of a multi-directional adjustment assembly and a milling processing part. Among them, the multi-directional adjustment assembly is assembled on the outside of the milling mounting frame, and the output end of the milling processing part faces inward; the four milling processing parts respectively correspond to the four edges of the profile; a lubrication supply assembly is assembled on the milling processing part;

[0009] The milling processing part includes a box body, a cutter head and a positioning wheel. Positioning wheels are provided on the front and rear sides of the cutter head. Conical protrusions distributed in a circular pattern are provided on one side wall of the positioning wheel close to the box body, and the piston rod in the lubrication supply assembly is periodically pressed during its rotation;

[0010] The oil replenishment and chip storage assembly is composed of a main cavity, a dynamic top cover, a guide slider, an inclined rail linkage rod and a floating piston plate. Among them, the main cavity is fixedly installed inside the machine tool, and a dynamic top cover is movably sleeved on the top of its inner cavity. Guide sliders are fixedly connected to the four corners of the top of the dynamic top cover. One end of the inclined rail linkage rod is fixedly connected to the sliding seat and the other end is embedded in the inclined slide rail of the guide slider. A floating piston plate is assembled on the bottom wall of the dynamic top cover through a connecting rod. The floating piston plate and the bottom wall of the main cavity jointly enclose a variable liquid cavity.

[0011] Further, the milling processing part further includes a servo motor. The servo motor is arranged in the middle of the box body. The output shaft of the servo motor passes through the box body and is coaxially assembled with the cutter head. The positioning wheel is rotatably connected to the box body through a bearing.

[0012] Further, a chip storage cavity is formed between the dynamic top cover and the floating piston plate, and a metal chip collection trough can be placed above the floating piston plate; a stop valve is connected to the side wall of the variable liquid cavity.

[0013] Further, the lubrication supply assembly includes a heating chamber, an oil delivery pipe, a variable pressure flow control pipe, a high-pressure oil pipe, an oil spraying cover, a supply pipe, a piston rod and a spring. Among them, the heating chamber is fixedly installed inside the box body, and its bottom end is hermetically connected to the oil delivery pipe. The oil delivery pipe adopts a telescopic structure and extends downward to communicate with the variable liquid cavity; the variable pressure flow control pipe is also installed inside the box body, and a partition with a through hole is arranged inside it. The partition divides the inside of the variable pressure flow control pipe into two chambers, namely a transmission chamber and a variable pressure chamber; one end of the piston rod is inserted into the transmission chamber of the variable pressure flow control pipe and is connected to the spring inside it, and the other end penetrates through the box body and extends to the positioning wheel and is closely attached to it; the variable pressure chamber of the variable pressure flow control pipe is communicated with the high-pressure oil pipe and the supply pipe respectively through two one-way valves. The high-pressure oil pipe extends to the oil spraying cover and is communicated with it, and the supply pipe extends to the bottom position of the inner cavity of the heating chamber.

[0014] Further, the cutter head and the positioning wheel are arranged in the same plane, and a hydraulic cylinder is provided at the bottom of the servo motor.

[0015] Further, the milling machining part further includes an oil baffle and an infrared detector. The oil baffle is fixedly installed at the front and rear ends of the box body and is arranged obliquely, and its lower end extends to near the positioning wheel but does not interfere with the contact area between the positioning wheel and the profile. An infrared detector is provided on the inner side wall of the box body near the bottom edge of the positioning wheel for detecting whether the profile is in place, and the output end of the infrared detector is electrically connected to the input end of the control system.

[0016] Further, the lubrication supply assembly further includes an oil pump. The oil pump connects the variable pressure chamber of the variable pressure control flow pipe with the heating chamber, and the input end of the oil pump is electrically connected to the output end of the control system.

[0017] Further, the multi-directional adjustment assembly is composed of a first cylinder, a feed slide table and a second cylinder. The first cylinder is installed at the top and bottom edges outside the milling installation frame. The telescopic end of the first cylinder is connected to the outer edge of the feed slide table. A second cylinder is installed on the outer edge of the feed slide table, and the telescopic end of the second cylinder is connected to the box body.

[0018] Further, blanking ports are provided at the left and right side edges of the dynamic top cover. The top wall of the dynamic top cover adopts an inclined structure with a lower outer side and a higher inner side. A chip cleaning assembly is provided above the dynamic top cover.

[0019] Further, the chip cleaning assembly is composed of a corrugated pipe, a drainage pipe and a support frame. The corrugated pipe is hermetically connected to the middle of the dynamic top cover and is communicated with it. Drainage pipes are respectively connected to the front and rear sides of the corrugated pipe. The cover plate is hermetically fitted at the blanking ports on the front and rear sides of the dynamic top cover. The drainage pipe and the cover plate are fixedly installed on the main cavity through the support frame, and the outer end of the drainage pipe is communicated with the negative pressure absorption device.

[0020] The technical effects and advantages of the present invention:

[0021] 1. By providing left and right milling systems, the present invention is conducive to clamping the profile by the opposite movement of the left and right milling systems when the profile is suspended. For profiles of different sizes, it is necessary to adjust the Y-axis position or X-axis gap of the milling machining part to meet the clamping requirements, so as to realize the four-corner positioning of the profile. The cutter head is driven to rotate by the servo motor. When the rotating cutter head contacts the edge of the profile and cuts it, due to the shape of the cutter head and the movement track, it will gradually cut the right-angle edge of the edge of the profile into a rounded corner, realizing multi-sided synchronous machining.

[0022] 2. The present invention is provided with a positioning wheel, a lubrication supply assembly, and an oil replenishment and chip storage assembly, which is beneficial when the left and right milling systems approach. The inclined rail linkage rod presses downward through the inclined chute of the guiding slider, driving the guiding slider, the dynamic top cover, the floating piston plate, and the metal chip collection tank to sink, compressing the variable liquid cavity. The lubricating oil is preheated in the heating chamber through the oil delivery pipe and then its lubricity is enhanced; the profile traction causes the positioning wheel to rotate, and the protrusion on its back periodically presses the piston rod, causing pressure pulsation in the variable pressure flow control pipe under the action of the spring, spraying the oil in the heating chamber to the surface of the positioning wheel through the replenishment pipe, the high-pressure oil pipe, and the oil spraying cover, enhancing the cutting efficiency of the cutter head and reducing friction, thus realizing the effective utilization of resources.

[0023] 3. The present invention is provided with an oil replenishment and chip storage assembly and a chip cleaning assembly, which is beneficial when the equipment is reset. The bidirectional lead screw drives the left and right milling systems to separate, and the inclined rail linkage rod drives the guiding slider, the dynamic top cover, the floating piston plate, and the metal chip collection tank to move upward through the inclined chute of the guiding slider. The cover plate closes the blanking port to form a sealed chip storage cavity in the metal chip collection tank, and the negative pressure absorption device sucks the chips in the metal chip collection tank through the drainage pipe and recovers them through the corrugated pipe, realizing the centralized treatment of waste materials. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 is a schematic diagram of the overall structure and its partial sectional view of the present invention.

[0026] Figure 3 of the present invention Figure 2 schematic diagram of the remaining structure after stripping some components of the stripping machine tool and the spacing adjustment assembly.

[0027] Figure 4 is a schematic diagram of the connection structure of the slide seat, the milling installation frame, the multi-directional adjustment assembly, the milling processing part, and the lubrication supply assembly of the present invention.

[0028] Figure 5 of the present invention Figure 4 schematic diagram of the structure at position A.

[0029] Figure 6 of the present invention Figure 4 schematic diagram of the right view of the structure.

[0030] Figure 7 of the present invention Figure 4 schematic diagram of the left view of the structure.

[0031] Figure 8 is a schematic diagram of the connection structure of the slide seat, the oil replenishment and chip storage assembly, and the chip cleaning assembly of the present invention.

[0032] Figure 9Schematic diagram of the connection structure between the oil replenishment and chip storage assembly and the chip cleaning assembly of the present invention.

[0033] Figure 10 of the present invention Figure 9 Schematic diagram of the structure at position B in

[0034] Reference numerals are: 1, machine tool; 2, spacing adjustment assembly; 201, bidirectional lead screw; 202, speed reducer; 203, reversible motor; 3, sliding seat; 4, milling mounting bracket; 5, multi-directional adjustment assembly; 501, first cylinder; 502, feed slide; 503, second cylinder; 6, milling processing unit; 601, box body; 602, servo motor; 603, cutter head; 604, positioning wheel; 605, oil baffle; 606, infrared detector; 7, lubrication supply assembly; 701, heating chamber; 702, oil delivery pipe; 703, variable pressure flow control pipe; 704, high-pressure oil pipe; 705, oil spray hood; 706, supply pipe; 707, piston rod; 708, spring; 709, oil pump; 8, oil replenishment and chip storage assembly; 801, main cavity; 802, dynamic top cover; 803, guide slider; 804, inclined rail linkage rod; 805, floating piston plate; 806, metal chip collection trough; 9, chip cleaning assembly; 901, bellows; 902, drainage pipe; 903, support frame; 904, cover plate. Detailed implementation manners

[0035] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. In addition, the forms of each structure described in the following embodiments are merely examples, and a profile four-side R-angle machine related to the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0036] Referring to Figure 1-10 , the present invention provides a profile four-side R-angle machine, including a machine tool 1 and a spacing adjustment system, and left and right milling systems are mirror-symmetrically arranged on the spacing adjustment system; an oil replenishment and chip storage assembly 8 and a chip cleaning assembly 9 located inside the machine tool 1 are provided between the left and right milling systems;

[0037] The left and right milling systems are composed of symmetrically arranged left and right milling systems; both the left and right milling systems are composed of a sliding seat 3, a milling mounting bracket 4 and an adjustable milling assembly;

[0038] The sliding seat 3 is drivably arranged on the spacing adjustment system, and a milling mounting frame 4 is fixedly connected to the middle of its top. Two groups of adjustable milling assemblies arranged in central symmetry are provided on the front and rear sides of the milling mounting frame 4. The adjustable milling assembly is composed of a multi-directional adjustment assembly 5 and a milling processing unit 6. Among them, the multi-directional adjustment assembly 5 is assembled on the outside of the milling mounting frame 4, and the output end of the milling processing unit 6 faces inward; the four milling processing units 6 respectively correspond to the four edges of the profile to realize synchronous rounding processing; a lubrication supply assembly 7 is assembled on the milling processing unit 6.

[0039] In this embodiment, it should be specifically noted that the spacing adjustment system is a spacing adjustment assembly 2. The spacing adjustment assembly 2 includes a bidirectional lead screw 201, a speed reducer 202 and a reversible motor 203. Among them, the bidirectional lead screw 201 is rotatably mounted in the middle of the machine tool 1 and extends along the length direction. One end of the bidirectional lead screw 201 is assembled with a speed reducer 202 drivably connected thereto, and a reversible motor 203 is installed beside the speed reducer 202; the reversible motor 203 can transmit the driving torque to the speed reducer 202 and drive the bidirectional lead screw 201 to perform forward and reverse self-rotation movements through the speed reducer 202; among them, the forward and reverse self-rotation movements are respectively rotating along the clockwise and counterclockwise directions of the axis; other forms of spacing adjustment systems can be used for substitution, as long as the requirements for the in-phase or out-of-phase displacement of the left and right milling systems are met.

[0040] The top wall of the machine tool 1 is provided with a track extending along its length direction. The front and rear ends of the sliding seat 3 are slidably clamped on the track, and its bottom is threadedly sleeved with the bidirectional lead screw 201. The surface of the bidirectional lead screw 201 is provided with mirror threads to drive the left and right milling systems to realize in-phase or out-of-phase displacement when the bidirectional lead screw 201 rotates.

[0041] In this article, all the positional relationships regarding front, rear, left and right discussed are defined based on Figure 1-2 the presented perspective. These azimuth descriptions do not have actual geographical or physical meanings. They are only a reference framework set to help readers more intuitively understand the content in the article. In this way, we can more clearly show the relative positional relationships between various parts, so that the entire discussion process becomes easier to understand and follow. Please note that this custom azimuth identification is only applicable to the internal use of this article and does not represent any absolute direction or position in the real world.

[0042] Refer to Figure 2-7 As shown, the multi-directional adjustment assembly 5 is composed of a first cylinder 501, a feed slide 502 and a second cylinder 503. Among them, the first cylinder 501 is installed on the top and bottom edges outside the milling mounting frame 4. The telescopic end of the first cylinder 501 is connected to the outer edge of the feed slide 502. A second cylinder 503 is installed on the outer edge of the feed slide 502, and the telescopic end of the second cylinder 503 is connected to the box body 601.

[0043] The milling machining part 6 includes a box body 601, a servo motor 602, a cutter head 603 and a positioning wheel 604. Among them, the servo motor 602 is arranged in the middle of the box body 601. The output shaft of the servo motor 602 passes through the box body 601 and is coaxially assembled with the cutter head 603. The positioning wheels 604 are arranged on the front and rear sides of the cutter head 603, and are rotatably connected to the box body 601 through bearings;

[0044] The oil replenishment and chip storage assembly 8 is composed of a main cavity 801, a dynamic top cover 802, a guiding slider 803, an inclined rail linkage rod 804 and a floating piston plate 805. Among them, the main cavity 801 is fixedly installed inside the machine tool 1, and the dynamic top cover 802 is movably sleeved on the top of its inner cavity. Four corners of the top of the dynamic top cover 802 are fixedly connected with guiding sliders 803. One end of the inclined rail linkage rod 804 is fixedly connected to the slide seat 3, and the other end is embedded in the inclined slide rail of the guiding slider 803. The bottom wall of the dynamic top cover 802 is assembled with a floating piston plate 805 through a connecting rod. The floating piston plate 805 and the bottom wall of the main cavity 801 jointly enclose a variable liquid cavity; In addition, a chip storage cavity is formed between the dynamic top cover 802 and the floating piston plate 805, and a metal chip collection tank 806 can be placed above the floating piston plate 805; A stop valve is connected to the side wall of the variable liquid cavity, and oil can be replenished in time when the lubricating oil in the variable liquid cavity is insufficient.

[0045] The lubrication supply assembly 7 includes a heating chamber 701, an oil delivery pipe 702, a variable pressure flow control pipe 703, a high-pressure oil pipe 704, an oil injection cover 705, a supply pipe 706, a piston rod 707 and a spring 708. Among them, the heating chamber 701 is fixedly installed inside the box body 601, and its bottom end is hermetically connected to the oil delivery pipe 702. The oil delivery pipe 702 adopts a telescopic structure and extends downward to communicate with the variable liquid cavity; The variable pressure flow control pipe 703 is also installed inside the box body 601, and a partition with through holes is arranged inside it. The partition divides the inside of the variable pressure flow control pipe 703 into two chambers, namely a transmission chamber and a variable pressure chamber; One end of the piston rod 707 is inserted into the transmission chamber of the variable pressure flow control pipe 703 and is connected to the spring 708 inside it, and the other end penetrates through the box body 601 and extends to the positioning wheel 604 and is closely attached to it; The variable pressure chamber of the variable pressure flow control pipe 703 is communicated with the high-pressure oil pipe 704 and the supply pipe 706 respectively through two one-way valves. Among them, the high-pressure oil pipe 704 extends to the oil injection cover 705 and is communicated with it, and the supply pipe 706 extends to the bottom position of the inner cavity of the heating chamber 701.

[0046] In this embodiment, it should be specifically noted that the feed slide 502 is slidably clamped on the longitudinal guide rail of the milling mounting frame 4, and the box body 601 is slidably clamped on the transverse guide rail of the feed slide 502; it is convenient to precisely adjust the longitudinal position (Y-axis direction) of the milling processing part 6 or the lateral gap (X-axis direction) between the milling processing part and the profile, and it can be adaptively adjusted according to the geometric characteristics of profiles with different specifications. Through multi-dimensional positioning, the spatial position stability of the profile during the processing process is ensured;

[0047] The cutter head 603 and the positioning wheel 604 are arranged coplanarly. A hydraulic cylinder can be provided at the bottom of the servo motor 602 for fine-tuning the longitudinal position of the servo motor 602 and the cutter head 603 connected to its output shaft. After the positioning wheel 604 completes the profile limiting, the fillet radius of the profile edge cutting is adjusted by adjusting the longitudinal offset of the cutter head 603;

[0048] On one side wall of the positioning wheel 604 close to the box body 601, there are conical protrusions distributed in a circumferential manner. During its rotation, it periodically presses the piston rod 707, and during its rotation, it will periodically press the piston rod 707, prompting it to reciprocate along the transmission cavity of the variable pressure flow control pipe 703 under the elastic reset action of the spring 708. This alternating action causes pressure pulsation in the variable pressure cavity of the variable pressure flow control pipe 703;

[0049] The milling processing part 6 further includes an oil baffle 605 and an infrared detector 606. The oil baffle 605 is fixedly installed at the front and rear ends of the box body 601 and is arranged obliquely. Its lower end extends to the vicinity of the positioning wheel 604 but does not interfere with the contact area between the positioning wheel 604 and the profile; an infrared detector 606 is provided on the inner side wall of the box body 601 near the bottom edge of the positioning wheel 604 for detecting whether the profile is in place. The output end of the infrared detector 606 is electrically connected to the input end of the control system; when the profile enters the detection range of the infrared detector 606, the infrared detector 606 immediately sends a stop signal to the control system, triggering the oil pump 709 to perform a valve closing action, thereby ensuring the one-way flow characteristic of the fluid in the variable pressure flow control pipe 703;

[0050] The lubrication supply assembly 7 further includes an oil pump 709. The oil pump 709 connects the variable pressure cavity of the variable pressure flow control pipe 703 with the heating chamber 701 to form a communication circuit. The input end of the oil pump 709 is electrically connected to the output end of the control system; when the milling process ends and there is no need to oil the profile edge, the oil pump 709 is turned on so that the residual lubricating oil in the transmission cavity of the variable pressure flow control pipe 703 is transferred through the heating chamber 701 and finally all flows back to the variable liquid cavity to complete the full closed-loop recovery of the lubrication medium in the system;

[0051] The lubrication supply assembly 7 is assembled at a position close to the front positioning wheel 604 in the same set of milling and processing units 6, and a coating layer is provided on the surface of the positioning wheel 604. The oil injection end of the oil injection cover 705 is closely attached to the surface of the positioning wheel 604. For the positioning wheel 604 for processing the upper edge of the profile, its bottom wall fits with the profile, so the corresponding oil injection cover 705 is arranged above the positioning wheel 604. For the positioning wheel 604 for processing the lower edge of the profile, its top wall fits with the profile, so the corresponding oil injection cover 705 is arranged below the positioning wheel 604. Regarding the layout orientation of other components of the lubrication supply assembly 7, those skilled in the art can flexibly adjust according to actual needs, but the overall working mechanism remains unchanged;

[0052] The variable pressure chamber of the variable pressure and flow control pipe 703 forms a directional flow path with the high-pressure oil pipe 704 and the supply pipe 706 through two one-way valves respectively. When the oil pump 709 is in the closed state, the liquid flow path is limited to only enter through the supply pipe 706 and discharge through the high-pressure oil pipe 704;

[0053] The top height of the guide slider 803 is always not higher than the plane where the bottom wall of the slide seat 3 is located, so as to ensure that the guide slider 803 and the slide seat 3 will not interfere with each other during the movement.

[0054] Referring to Figure 8-10 , blanking ports are provided at the left and right edges of the dynamic top cover 802. The top wall of the dynamic top cover 802 adopts an inclined surface structure with a lower outer part and a higher inner part. A chip cleaning assembly 9 is arranged above the dynamic top cover 802;

[0055] The chip cleaning assembly 9 is composed of a corrugated pipe 901, a drainage pipe 902 and a support frame 903. Among them, the corrugated pipe 901 is hermetically connected to the middle part of the dynamic top cover 802 and communicates with it. The drainage pipes 902 are respectively connected to the front and rear sides of the corrugated pipe 901. The cover plate 904 is hermetically fitted at the blanking ports on the front and rear sides of the dynamic top cover 802. The drainage pipes 902 and the cover plate 904 are fixedly installed on the main cavity 801 through the support frame 903, and the outer ends of the drainage pipes 902 are connected to a negative pressure absorption device.

[0056] In this embodiment, it should be specifically noted that the highest point of the chip cleaning assembly 9 is not higher than the plane where the bottom wall of the slide seat 3 is located, so as to avoid interfering with the movement of the slide seat 3. Except for the corrugated pipe 901 of the entire chip cleaning assembly 9 that will adaptively expand and contract with the lifting of the dynamic top cover 802, the rest of the components remain stationary relative to the dynamic top cover 802.

[0057] The working principle of the present invention:

[0058] When the profile is suspended between the left and right milling systems, after the equipment starts, the reversible motor 203 transmits the driving torque to the speed reducer 202, and drives the bidirectional lead screw 201 to perform a forward self-rotation movement through the speed reducer 202; this rotational movement causes the left and right milling systems, which are thread-connected to the surface of the bidirectional lead screw 201 and are symmetrically distributed, to generate an approaching displacement, gradually approaching the profile at the central position, and finally realizing the clamping and positioning of the profile; however, due to the differences in the thickness and width dimensions of different profiles, it is difficult to meet the diverse clamping requirements only by adjusting the spacing of the left and right milling systems; therefore, the system needs to further precisely adjust the longitudinal position (Y-axis direction) of the milling processing unit 6 or the lateral gap (X-axis direction) between the milling processing unit and the profile:

[0059] Upper / lower edge positioning condition: By controlling the corresponding first cylinder 501, its telescopic end drives the feed slide 502, the second cylinder 503, the milling processing unit 6 and the lubrication supply assembly 7 to move in the vertical direction until the positioning wheel 604 on this side is in complete contact with the upper / lower edge of the profile;

[0060] Side limit condition: By driving the corresponding second cylinder 503, its telescopic end drives the milling processing unit 6 and the lubrication supply assembly 7 to displace in the horizontal direction until the box body 601 on this side is in close contact with the left / right edge of the profile;

[0061] This dynamic adjustment mechanism can be adaptively adjusted according to the geometric characteristics of profiles of different specifications, and ensures the spatial position stability of the profile during the processing through multi-dimensional positioning, effectively preventing the occurrence of processing deviation phenomena;

[0062] When the left and right milling systems move synchronously toward the center position, the inclined rail linkage rod 804 rigidly connected to the slide seat 3 will produce a linkage displacement. The component is guided by the inclined slide groove of the guide slider 803, and simultaneously produces a downward pressure action during the horizontal displacement process, thereby driving the guide slider 803, the dynamic top cover 802, the floating piston plate 805 and the metal chip collection groove 806 connected in series to sink as a whole; this movement process applies pressure to the variable liquid cavity formed between the main cavity 801 and the floating piston plate 805, forcing the lubricating oil in the cavity to be transported to the heating chamber 701 through the oil pipe 702. After the lubricating oil in a non-high temperature state is treated with appropriate temperature increase, its metal surface permeability is significantly improved, which is conducive to forming a uniform lubricating film, effectively reducing the friction coefficient and optimizing the finish of the machined surface; during the milling of the edge of the profile, During the cutting process, the movement of pulling the profile at a uniform speed will cause the positioning wheel 604 to produce contact-type relative rotation with the profile surface. Since the back of the positioning wheel 604 is provided with circumferentially uniformly distributed conical protrusions, it will periodically press the piston rod 707 during its rotation, causing it to reciprocate along the transmission cavity of the voltage-changing control flow tube 703 under the elastic reset action of the spring 708; this alternating action causes pressure pulsation in the voltage-changing cavity of the voltage-changing control flow tube 703, pushing the preheated lubricating oil in the heating chamber 701 to pass through the supply pipe 706, the high-pressure oil pipe 704 and the oil spray cover 705 in turn, and finally forming a directional oil curtain to cover the working surface of the rotating positioning wheel 604. This lubrication mechanism can achieve continuous oil film replenishment when the edge of the profile is rolled and positioned, which not only enhances the cutting efficiency of the milling tool of the cutter head 603, but also reduces its wear rate;

[0063] At the same time, as the guide slider 803, the dynamic top cover 802, the floating piston plate 805 and the metal chip collecting groove 806 move downward as a whole, the blanking openings on both sides of the top wall of the dynamic top cover 802 gradually break away from the closed state of the cover plate 904. At this time, the metal chips generated by milling are first accumulated on the inclined top wall of the dynamic top cover 802, which adopts a slope design with a low outside and a high inside. The chips slide along the slope under the action of gravity and finally enter the metal chip collecting groove 806 through the open blanking opening to achieve automatic collection;

[0064] When the milling process is completed and the equipment is reset, the bidirectional screw 201 performs reverse rotation drive, and the left and right milling systems perform back-to-back separation movement. This action is transmitted through the linkage of the inclined rail linkage rod 804, and the horizontal displacement is converted into a vertical lifting force through the guide conversion of the inclined slide groove of the guide slider 803, driving the guide slider 803, the dynamic top cover 802, the floating piston plate 805 and the metal chip collection groove 806 to move up and reset as a whole; at this time, the cover plate 904 re-closes the blanking port to form a closed metal chip collection groove 806 chip storage chamber; then the negative pressure absorption device connected to the drainage pipe 902 is started, and the metal chips accumulated in the metal chip collection groove 806 are recovered and processed through the bellows 901 and the drainage pipe 902 in turn through negative pressure suction;

[0065] The reset process simultaneously triggers three linkage mechanisms:

[0066] The lifting action of the floating piston plate 805 expands the volume of the variable liquid cavity between the main cavity 801 and the floating piston plate 805, generating a negative pressure siphon effect, which causes the lubricating oil in the preheater of the heating chamber 701 to flow back to the liquid cavity. At this time, the heating chamber 701 stops working and the heating function is cut off to achieve energy saving;

[0067] When the profile leaves the detection area of the infrared detector 606, the infrared detector 606 immediately sends a start signal to the control system, triggering the oil pump 709 to start the command;

[0068] The oil pump 709 is turned on to allow the residual lubricating oil in the transmission cavity of the variable pressure flow control tube 703 to be transferred through the heating chamber 701 and finally flow back to the variable liquid cavity, completing the full closed-loop recovery of the system lubricating medium.

[0069] 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, all of which should be included under the protection of the present invention.

Claims

1. A profile four-side R-angle machine, comprising a machine tool (1) and a spacing adjustment system, on which a left and right milling system is mirror-symmetrically arranged; characterized in that: An oil replenishment and chip storage assembly (8) and a chip cleaning assembly (9) located inside the machine tool (1) are provided between the left and right milling systems; the left and right milling systems are composed of symmetrically arranged left and right milling systems; the left and right milling systems are both composed of a slide seat (3), a milling mounting frame (4) and an adjustable milling assembly; The slide (3) is transmission-mounted on the spacing adjustment system, and the middle of the top thereof is fixedly connected to a milling mounting frame (4). The front and rear sides of the milling mounting frame (4) are provided with two sets of adjustable milling assemblies arranged in a central symmetrical manner. The adjustable milling assembly consists of a multi-directional adjustment assembly (5) and a milling processing part (6), wherein the multi-directional adjustment assembly (5) is mounted on the outer side of the milling mounting frame (4), and the output end of the milling processing part (6) faces the inner side; the four milling processing parts (6) correspond to the four edges of the profile respectively; and a lubrication supply assembly (7) is mounted on the milling processing part (6); The milling processing part (6) comprises a box body (601), a cutter disc (603) and a positioning wheel (604), wherein the positioning wheels (604) are provided on both the front and rear sides of the cutter disc (603), and the positioning wheel (604) is provided with conical protrusions distributed in a circumference on a side wall close to the box body (601), and the positioning wheel (604) periodically presses against a piston rod (707) in the lubrication supply assembly (7) during its rotation; The oil replenishment and chip storage assembly (8) is composed of a main cavity (801), a dynamic top cover (802), a guide slider (803), an inclined rail linkage rod (804) and a floating piston plate (805), wherein the main cavity (801) is fixedly installed inside the machine tool (1) and a dynamic top cover (802) is movably sleeved on the top of its inner cavity, the four corners of the top of the dynamic top cover (802) are fixedly connected to the guide slider (803), one end of the inclined rail linkage rod (804) is fixedly connected to the slide seat (3) and the other end is embedded in the inclined slide rail of the guide slider (803), the bottom wall of the dynamic top cover (802) is equipped with a floating piston plate (805) through a connecting rod, and the floating piston plate (805) and the bottom wall of the main cavity (801) together enclose a variable liquid cavity.

2. The profile four-side R-angle machine according to claim 1, characterized in that: The milling processing part (6) also includes a servo motor (602). The servo motor (602) is arranged in the middle of the box (601). The output shaft of the servo motor (602) passes through the box (601) and is coaxially assembled with the cutter disc (603). The positioning wheel (604) is rotatably connected to the box (601) via a bearing.

3. The profile four-side R-angle machine according to claim 1, characterized in that: A chip storage chamber is formed between the dynamic top cover (802) and the floating piston plate (805), and a metal chip collection trough (806) can be placed above the floating piston plate (805); a stop valve is connected to the side wall of the variable liquid chamber.

4. The profile four-side R-angle machine according to claim 1 or 2, characterized in that: The lubricating supply assembly (7) includes a heating chamber (701), an oil delivery pipe (702), a pressure-transforming and flow-controlling pipe (703), a high-pressure oil pipe (704), an oil injection cover (705), a supply pipe (706), a piston rod (707), and a spring (708). Among them, the heating chamber (701) is fixedly installed inside the box body (601), and its bottom end is hermetically connected to the oil delivery pipe (702). The oil delivery pipe (702) adopts a telescopic structure and extends downward to communicate with the variable liquid chamber. The pressure-transforming and flow-controlling pipe (703) is also installed inside the box body (601), and a partition with a through hole is provided inside it. This partition divides the interior of the pressure-transforming and flow-controlling pipe (703) into two chambers, namely a transmission chamber and a pressure-transforming chamber. One end of the piston rod (707) is inserted into the transmission chamber of the pressure-transforming and flow-controlling pipe (703) and is connected to the spring (708) inside it, and the other end penetrates through the box body (601) and extends to the positioning wheel (604) and closely adheres to it. The pressure-transforming chamber of the pressure-transforming and flow-controlling pipe (703) is communicated with the high-pressure oil pipe (704) and the supply pipe (706) respectively through two one-way valves. Among them, the high-pressure oil pipe (704) extends to the oil injection cover (705) and is communicated with it, and the supply pipe (706) extends to the bottom position of the inner cavity of the heating chamber (701).

5. The profile four-sided R-angle machine according to claim 2, characterized in that: The cutter head (603) and the positioning wheel (604) are arranged on the same plane, and a hydraulic cylinder is provided at the bottom of the servo motor (602).

6. The profile four-sided R-angle machine according to claim 1, wherein: The milling processing part (6) further includes an oil baffle (605) and an infrared detector (606). Among them, the oil baffle (605) is fixedly installed at the front and rear ends of the box body (601) and is arranged obliquely. Its lower end extends near the positioning wheel (604) but does not interfere with the contact area between the positioning wheel (604) and the profile. An infrared detector (606) is provided on the inner side wall of the box body (601) near the bottom edge of the positioning wheel (604) for detecting whether the profile is in place. The output end of the infrared detector (606) is electrically connected to the input end of the control system.

7. The profile four-side R-angle machine according to claim 6, wherein: The lubricating supply assembly (7) further includes an oil pump (709). The oil pump (709) connects the pressure-transforming chamber of the pressure-transforming and flow-controlling pipe (703) with the heating chamber (701), and the input end of the oil pump (709) is electrically connected to the output end of the control system.

8. The profile four-side R-angle machine according to claim 1, wherein: The multi-directional adjustment assembly (5) is composed of a first cylinder (501), a feed slide (502), and a second cylinder (503). Among them, the first cylinder (501) is installed at the top and bottom edges outside the milling installation frame (4). The telescopic end of the first cylinder (501) is connected to the outer edge of the feed slide (502). A second cylinder (503) is installed on the outer edge of the feed slide (502), and the telescopic end of the second cylinder (503) is connected to the box body (601).

9. The profile four-side R-angle machine according to claim 1, characterized in that: Falling openings are provided at the left and right side edges of the dynamic top cover (802). The top wall of the dynamic top cover (802) adopts an inclined structure with a lower outer side and a higher inner side. A chip cleaning assembly (9) is provided above the dynamic top cover (802).

10. The profile four-side R-angle machine according to claim 1 or 9, characterized in that: The chip cleaning assembly (9) is composed of a corrugated pipe (901), a drainage pipe (902) and a support frame (903). The corrugated pipe (901) is hermetically connected to the middle of the dynamic top cover (802) and communicates with it. The front and rear sides of the corrugated pipe (901) are respectively connected to the drainage pipe (902). The cover plate (904) is hermetically fitted at the blanking openings on the front and rear sides of the dynamic top cover (802). The drainage pipe (902) and the cover plate (904) are fixedly installed on the main cavity (801) through the support frame (903), and the outer end of the drainage pipe (902) is communicated with the negative pressure absorption device.

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