Numerical control engraving and milling machine for processing plate

Abstract

This invention discloses a CNC milling machine for sheet metal processing, relating to the field of sheet metal processing technology. It includes a frame, a base, a processing table mounted above the base, a drive motor, and a sheet metal body. A milling cutter is fixedly mounted on the working end of the drive motor. A flipping mechanism is provided on the processing table. Through the flipping mechanism, a suspended ring, combined with a first double-rod cylinder and a second double-rod cylinder arranged in a cross shape, along with a matching reduction motor and a rotating shaft, allows for switching between two sets of first and second semi-circular plates to clamp different opposite sides of the sheet metal body. Combined with multi-angle automatic flipping, milling of the entire outer surface of the sheet metal body (top, bottom, and all four sides) can be completed in a single clamping operation without manual disassembly and flipping. This significantly reduces the time spent on manual clamping and flipping, improving overall processing efficiency. Simultaneously, a supporting mesh plate lifts and supports the sheet metal body, preventing deformation and breakage of thin sheet metal bodies during suspended milling.

Description

Technical Field

[0001] This invention belongs to the field of sheet metal processing technology, specifically a CNC milling machine for sheet metal processing. Background Technology

[0002] CNC engraving and milling machines are composite high-speed precision CNC machine tools controlled by CNC systems and equipped with high-speed electric spindles. They have both fine engraving and light milling capabilities. They fill the functional gap between ordinary advertising engraving machines (which can only process soft materials and focus on engraving) and CNC machining centers (which focus on heavy cutting and roughing). They are core processing equipment for precision sheet metal, small molds, 3C electronic parts and other scenarios.

[0003] In existing technologies, when milling small-sized sheet metal, the sheet metal is directly placed on the processing table and clamped in place by a fixing device. After the milling cutter finishes milling the top surface of the sheet metal, only one side of the sheet metal can be milled. When it is necessary to process the other surfaces such as the reverse and sides of the sheet metal, the machine needs to be stopped for manual disassembly, flipping, and re-clamping. Then, the milling cutter can be used to mill the remaining surfaces of the sheet metal. This process is cumbersome, the clamping time is long, and the overall processing efficiency is reduced. To address this issue, we propose a CNC milling machine for sheet metal processing. Summary of the Invention

[0004] The purpose of this invention is to provide a CNC engraving and milling machine for sheet metal processing, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a CNC engraving and milling machine for sheet metal processing, comprising a frame, a base, a processing table disposed above the base, a drive motor, and a sheet metal body; a milling cutter is fixedly disposed at the working end of the drive motor; and a flipping mechanism is disposed on the processing table, the flipping mechanism comprising: The suspended ring, two first double-rod cylinders, and two second double-rod cylinders are set above the processing table. The working end of the first double-rod cylinder is fixedly provided with a first semi-circular plate, and the working end of the second double-rod cylinder is fixedly provided with a second semi-circular plate. The first semi-circular plate and the second semi-circular plate are used to clamp and fix the plate body. Both the first and second double-rod cylinders are rotatably equipped with rotating shafts, and the ends of the rotating shafts extend into the interior of the suspended ring. Two geared motors are fixedly installed on the outside of the suspended ring. The geared motors are fixedly connected to the ends of the rotating shafts and are used to drive the plate body to rotate in the front-back and left-right directions.

[0006] Preferably, a hydraulic cylinder is embedded inside the processing table, and a support mesh plate is fixedly installed at the working end of the hydraulic cylinder for supporting and correcting the position of the sheet material.

[0007] Preferably, the bottom of the suspended ring is fixedly provided with two support pillars.

[0008] Preferably, both the first and second semicircular plates are provided with adaptive clamping components for clamping the outer surface of the irregularly shaped plate body. The adaptive clamping components include a first arc plate rotatably disposed inside the first and second semicircular plates, and two second arc plates rotatably disposed inside the first arc plate.

[0009] Preferably, the second arc-shaped plate has two third arc-shaped plates rotatably arranged inside it, and the third arc-shaped plates are provided with multiple toothed racks for stable contact with the outer surface of the irregular contour of the plate body.

[0010] Preferably, the first arc-shaped plate is provided with a cleaning component, which includes: A hollow semi-circular plate is fixed to the top and bottom of the first arc-shaped plate. Multiple oblique blowing holes are opened on the outer arc-shaped surface of the hollow semi-circular plate to blow away and clean the debris attached to the two sides of the plate body.

[0011] Preferably, a pipeline is fixedly installed on the hollow semi-circular plate, the shaft on the second double-rod cylinder is hollow inside, and a slip ring is sleeved on the outside of the shaft on the second double-rod cylinder.

[0012] Preferably, the frame is provided with an X-axis module, and the X-axis module is provided with a Z-axis module.

[0013] Preferably, the drive motor is fixed on the Z-axis module, and the top of the base is provided with a Y-axis module.

[0014] Preferably, the processing table is provided with telescopic plates on both the front and back sides for protecting the Y-axis module.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) Through the flipping mechanism, the suspended ring is combined with the first double rod cylinder and the second double rod cylinder arranged in a cross shape, and the matching geared motor and rotating shaft combination. Two sets of first semicircular plates and second semicircular plates can be switched to clamp different opposite sides of the plate body respectively. With multi-angle automatic flipping, the upper, lower and four sides of the plate body can be milled in one clamping without manual disassembly and flipping. This greatly reduces the time for manual clamping and flipping, and improves the overall processing efficiency. At the same time, the support mesh plate lifts and supports the plate body to avoid deformation and breakage of the thin plate body during suspended milling.

[0016] (2) By using the adaptive clamping component in conjunction with the flipping mechanism, the plate body can be flipped and switched on multiple sides and continuously engraved and milled on the entire surface in one clamping. At the same time, it can adaptively fit and clamp the plate body with various irregular contours such as arc surface and inclined surface, effectively improving the clamping stability during the flipping station switching and engraving and milling process, and significantly increasing the applicability of the equipment to plate bodies with different contour shapes.

[0017] (3) Through the cleaning component, the hollow semi-circular plate continuously inputs high-pressure gas during the entire process of multi-face flipping processing of the plate body. The directional airflow formed by the oblique blowing hole blows away the processing debris attached to the surface of the plate body in real time. This can not only avoid the accumulation of chips that scratch the processed surface, but also remove residual chips on the outer surface of the plate body when switching the clamping station. This prevents the rack on the second semi-circular plate from pressing the chips and causing indentations or damage to the surface of the plate body. In conjunction with the multi-face processing of the flipping mechanism and the irregular clamping function of the adaptive clamping component, the processing efficiency and clamping adaptability are ensured, while further improving the surface quality of the milling processing of the finished plate body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the suspended ring structure of the present invention; Figure 4 This is a bottom view of the supporting mesh structure of the present invention; Figure 5 This is a schematic diagram of the structure of the first double-rod cylinder and the second double-rod cylinder of the present invention; Figure 6 This is a bottom view of the structure of the first and second semicircular plates of the present invention. Figure 7 This is a schematic diagram of the adaptive clamping component structure of the present invention; Figure 8 This is a bottom view of the first and second arc-shaped plates of the present invention. In the diagram: 100, base; 101, frame; 102, X-axis module; 103, drive motor; 104, Z-axis module; 105, processing table; 106, sheet metal body; 200, suspended ring; 201, first double-rod cylinder; 202, first semi-circular plate; 203, second semi-circular plate; 204, second double-rod cylinder; 205, hydraulic cylinder; 206, support mesh plate; 300, first arc-shaped plate; 301, rack; 302, second arc-shaped plate; 303, third arc-shaped plate; 400, pipeline; 401, air slip ring; 402, hollow semi-circular plate; 403, oblique blow hole. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0020] Example 1 Please see Figures 1-7 This invention provides a technical solution: a CNC engraving and milling machine for sheet metal processing, comprising a frame 101, a base 100, a processing table 105, a drive motor 103, and a sheet metal body 106. The working end of the drive motor 103 is fixedly equipped with an engraving and milling cutter. A tilting mechanism is provided on the processing table 105, the tilting mechanism comprising: The suspended ring 200, two first double-rod cylinders 201, and two second double-rod cylinders 204 are arranged above the processing table 105. The air supply of the first double-rod cylinders 201 and the second double-rod cylinders 204 is also connected to the suspended ring 200 through other pneumatic slip rings, which does not affect their air supply during operation. The pneumatic slip rings are connected to external air supply equipment. The two first double-rod cylinders 201 are arranged in a front-to-back arrangement, and the two second double-rod cylinders 204 are arranged in a left-to-right arrangement, and are distributed in a cross shape inside the suspended ring 200, respectively corresponding to two sets of opposite sides of the plate body 106. The working end of the first double-rod cylinder 201 is fixedly provided with a first semi-circular plate 202, and the working end of the second double-rod cylinder 204 is fixedly provided with a second semi-circular plate 203. The first semi-circular plate 202 and the second semi-circular plate 203 are used to clamp and fix the plate body 106. Both the first double-rod cylinder 201 and the second double-rod cylinder 204 are rotatably equipped with rotating shafts, and the ends of the rotating shafts extend into the interior of the suspended ring 200. Two geared motors are fixedly installed on the outside of the suspended ring 200 (the two geared motors are fixed to the back and right side of the suspended ring 200, respectively, and are connected to the ends of the rotating shafts on the first double-rod cylinder 201 near the back and the second double-rod cylinder 204 near the right, respectively. Only the rotating shaft on the second double-rod cylinder 204 is hollow inside, which facilitates the delivery of high-pressure gas for cleaning debris to the pipeline 400). The geared motors are fixedly connected to the ends of the rotating shafts. The geared motors are used to drive the plate body 106 to flip in the front-back and left-right directions. There is no need for manual disassembly and flipping. Multi-sided processing of the plate body 106 can be completed in one clamping, which greatly shortens the clamping time and improves the overall processing efficiency.

[0021] Example 2 Please refer to Example 1. Figures 1-7A hydraulic cylinder 205 is embedded inside the processing table 105. A support mesh plate 206 is fixedly installed at the working end of the hydraulic cylinder 205 to support and correct the position of the sheet metal body 106. When the sheet metal body 106 is flipped into place and enters the milling station, the piston rod in the hydraulic cylinder 205 extends and pushes the support mesh plate 206 upward until the top surface of the support mesh plate 206 is in contact with the lower surface of the sheet metal body 106, forming a full-range support for the suspended area in the middle of the sheet metal body 106, avoiding bending deformation or even breakage of the sheet metal body 106 due to vertical cutting force during the milling process; at the same time, during the rising process of the support mesh plate 206, the tilted sheet metal body 106 can be automatically straightened through the horizontal support surface, correcting the horizontal posture of the sheet metal body 106. This structure can effectively improve the structural rigidity and clamping accuracy of some thinner sheet metal bodies 106, and ensure the dimensional stability of the milling depth. Two pillars are fixedly installed at the bottom of the suspended ring 200, and the bottom of the pillars are fixedly connected to the processing table 105 by bolts. The two pillars support the suspended ring 200 at a set height above the processing table 105, providing sufficient space for the flipping action of the plate body 106 inside the suspended ring 200.

[0022] Example 3 Please refer to Example 2. Figures 1-8 Both the first semicircular plate 202 and the second semicircular plate 203 are equipped with adaptive clamping components for clamping the outer surface of the sheet body 106 with irregular contours (such as curved surfaces, inclined surfaces, etc.). The adaptive clamping components include a first arc-shaped plate 300 rotatably disposed inside the first semicircular plate 202 and the second semicircular plate 203, and two second arc-shaped plates 302 rotatably disposed inside the first arc-shaped plate 300. When the semicircular plate is fed into the sheet body 106 for clamping, the rack 301 on the third arc-shaped plate 303 first contacts the irregular surface of the sheet body 106. Under the clamping reaction force, the third arc plate 303 rotates autonomously to adjust its angle and fits the contour surface of the corresponding area; then the second arc plate 302 and the first arc plate 300 deflect synchronously with the overall contact state to adapt to a larger range of contour curvature. Through the hinged adaptive deflection of the multi-level arc plates, it can actively match non-planar contours such as arc surfaces and inclined surfaces, effectively increasing the clamping contact area and avoiding the problems of unstable clamping and slippage caused by point contact between ordinary planar clamping and the irregular plate body 106, significantly improving the reliability of clamping the irregular plate body 106. The second arc plate 302 has two third arc plates 303 internally arranged for rotation. Each third arc plate 303 has multiple racks 301 for stable contact with the irregularly shaped outer surface of the sheet body 106. When the outer surface of some sheet bodies 106 has an irregular shape, ordinary planar clamping methods cannot fully conform to the contour of the sheet body 106, making stable clamping difficult and prone to slippage and displacement during the flipping process. When the semi-circular plate is fed and clamped towards the sheet body 106, the first arc plate 300, the second arc plate 302, and the third arc plate 303 can move along with the sheet body... The outer contour of the body 106 can be autonomously rotated to adjust its angle. Through multi-level hinge deflection adaptive matching of various irregular contours such as curved surfaces and inclined surfaces, multiple sets of racks 301 can be tightly abutted against the outer surface of the irregular contour of the body 106. The clamping force is dispersed by multi-point contact, which not only ensures the stability of the irregular contour body 106 clamping and avoids slippage and deflection of the body 106 during flipping and milling, but also prevents local stress concentration from causing edge damage to the body 106. It effectively adapts to the multi-face milling processing needs of various contour shapes of the body 106.

[0023] Example 4 Please refer to Example 3. Figures 1-7 A cleaning component is provided on the first arc-shaped plate 300, and the cleaning component includes: Hollow semi-circular plates 402 are fixed at the top and bottom of the first arc plate 300. The oblique blowing holes 403 in the upper and lower hollow semi-circular plates 402 are inclined towards the surface of the plate body 106, which facilitates the directional blowing of debris attached to the surface of the plate body 106. Multiple oblique blowing holes 403 are opened on the outer arc surface of the hollow semi-circular plates 402 for blowing and cleaning debris attached to both sides of the plate body 106. The debris generated during processing can be cleaned in real time, avoiding debris accumulation and scratching the processed surface, and effectively improving the quality of the processed surface. Initial clamping and upper surface machining: The sheet body 106 is placed at the center of the suspension ring 200. The two first double-rod cylinders 201 are activated to drive the first semi-circular plate 202 to move toward the sheet body 106. The sheet body 106 is clamped and fixed by the two first semi-circular plates 202. At this time, the second semi-circular plate 203 is in a retracted state and does not clamp the sheet body 106. After clamping, the engraving and milling tool performs engraving and milling on the upper surface of the sheet body 106. The outer peripheral surface is rotated and processed sequentially: After the upper surface is milled, the reduction motor located on the back of the suspended ring 200 is started. Through the shaft transmission, the first double-rod cylinder 201 and the first semi-circular plate 202 on the corresponding side are rotated 90 degrees clockwise or counterclockwise as a whole, thereby driving the plate body 106 to rotate 90 degrees synchronously. After the rotation action is completed, the milling tool mills the plate body 106 to the upward side. The above rotation and processing actions are repeated to complete the processing of the other three sides of the plate body 106 in sequence, so as to realize the milling of all outer peripheral surfaces. Clamping station switching: After the peripheral surface is processed, the second double-rod cylinder 204 is activated to drive the second semi-circular plate 203 to move towards the plate body 106, and the plate body 106 is clamped and fixed by the two second semi-circular plates 203; after the clamping is stable, the first double-rod cylinder 201 drives the first semi-circular plate 202 to retract and disengage from the plate body 106, thus completing the clamping station switching. Front and back flipping processing: After the clamping switch is completed, the reduction motor located on the right side of the suspension ring 200 is started, which drives the second double rod cylinder 204 and the second semi-circular plate 203 on the corresponding side to rotate 90 degrees as a whole, so that the front or back of the plate body 106 is turned to the upward position, and the engraving and milling tool performs engraving and milling processing on this side; after the processing of this side is completed, the right reduction motor drives the plate body 106 to rotate 180 degrees again, so that the remaining unprocessed back or front is turned to the upward position and the engraving and milling is completed, finally realizing the all-round engraving and milling processing of all outer surfaces of the plate body 106; A pipe 400 is fixedly installed on the hollow semi-circular plate 402. The shaft of the second double-rod cylinder 204 is hollow inside. A slip ring 401 is sleeved on the outside of the shaft of the second double-rod cylinder 204 (the slip ring 401 is sleeved on the outside of the hollow shaft, and an external air source is connected to the fixed end of the slip ring 401, which can continuously deliver high-pressure gas to the internal cavity of the shaft while the shaft is rotating). The end of the pipe 400 is fixedly connected to the shaft, and the end of the pipe 400 extends into the inside of the shaft.

[0024] In this embodiment, an X-axis module 102 is provided on the frame 101, and a Z-axis module 104 is provided on the X-axis module 102. The X-axis module 102 is responsible for driving the engraving and milling cutter to complete the lateral feed motion, and the Z-axis module 104 is responsible for driving the engraving and milling cutter to complete the vertical cutting, lifting, and depth feed motion. The two work together to achieve precise displacement of the engraving and milling cutter in two dimensions, ensuring the lateral machining stroke and depth feed accuracy of the engraving and milling process.

[0025] In this embodiment, the drive motor 103 is fixed on the Z-axis module 104, the top of the base 100 is provided with a Y-axis module, and the processing table 105 is located on the Y-axis module. The modules of the X, Y, and Z axes cooperate with each other to form a three-axis linkage processing motion system, which can cover the entire processing range of the plate body 106, support the engraving and milling of complex paths, and ensure the dimensional accuracy and trajectory running accuracy of the processing.

[0026] In this embodiment, telescopic plates are provided on both the front and back of the processing table 105 to protect the Y-axis module.

[0027] Working principle and usage process of this invention: When using this invention, the plate body 106 is placed at the center of the suspension ring 200 during loading. The first double-rod cylinder 201 pushes the first semi-circular plate 202 to move closer to the plate body 106 for feeding. The rack 301 on the surface of the third arc plate 303 first contacts the surface of the plate body 106. Under the clamping reaction force, the third arc plate 303, the second arc plate 302, and the first arc plate 300 are driven to gradually and adaptively deflect, closely fitting the external planar contour or irregular contour of the plate body 106 to complete the initial clamping. The piston rod of the hydraulic cylinder 205 inside the processing table 105 extends, pushing the support mesh plate 206 to rise and support the bottom surface of the plate body 106, correcting the horizontal posture of the plate body 106 and providing rigid support at the bottom. During the engraving and milling process, the drive motor 103 drives the engraving and milling cutter to rotate at high speed. The X-axis module 102, Y-axis module, and Z-axis module 104 work together to complete the engraving and milling of the upper surface of the plate body 106. At the same time, external high-pressure gas is sent into the hollow semi-circular plate 402 through the air slip ring 401, hollow rotating shaft, and pipeline 400, and is sprayed out directionally from the oblique blow hole 403 to blow away the processing debris on the surface of the plate body 106 in real time. After the upper surface is processed, the hydraulic cylinder 205 drives the support mesh plate 206 to descend and avoid it. The reduction motor on the back of the suspension ring 200 drives the first double rod cylinder 201 and the first semi-circular plate 202 to rotate 90 degrees synchronously with the plate body 106 through the rotating shaft, so that the side of the plate body 106 is rotated to the upward position. The support mesh plate 206 rises again to provide support. The rotation and processing actions are repeated to complete the engraving and milling of the four sides of the plate body 106 in sequence. After the peripheral surface is processed, the second double-rod cylinder 204 pushes the second semi-circular plate 203 to move towards the plate body 106 for feeding, and clamps the other set of opposite edges of the plate body 106 through the adaptive clamping component; after the clamping is stable, the first double-rod cylinder 201 drives the first semi-circular plate 202 to retract and release, completing the clamping position switch. The reduction motor on the right side of the suspension ring 200 drives the second double-rod cylinder 204 to rotate 90 degrees with the plate body 106, so that the front of the plate body 106 turns to the upward position, and the support mesh plate 206 rises to support and complete the front milling; then the reduction motor drives the plate body 106 to rotate 180 degrees again to complete the back milling, and finally realizes the all-round processing of all outer surfaces of the plate body 106.

[0028] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A CNC engraving and milling machine for sheet metal processing, comprising a frame, a base, a processing table disposed above the base, a drive motor, and a sheet metal body, wherein an engraving and milling cutter is fixedly disposed at the working end of the drive motor, and a flipping mechanism is disposed on the processing table, characterized in that, The flipping mechanism includes: The suspended ring, two first double-rod cylinders, and two second double-rod cylinders are set above the processing table. The working end of the first double-rod cylinder is fixedly provided with a first semi-circular plate, and the working end of the second double-rod cylinder is fixedly provided with a second semi-circular plate. The first semi-circular plate and the second semi-circular plate are used to clamp and fix the plate body. Both the first and second double-rod cylinders are rotatably equipped with rotating shafts, and the ends of the rotating shafts extend into the interior of the suspended ring. Two geared motors are fixedly installed on the outside of the suspended ring. The geared motors are fixedly connected to the ends of the rotating shafts and are used to drive the plate body to rotate in the front-back and left-right directions.

2. The CNC engraving and milling machine for sheet metal processing according to claim 1, characterized in that, A hydraulic cylinder is embedded inside the processing table, and a support mesh plate is fixedly installed at the working end of the hydraulic cylinder to support and correct the position of the plate body.

3. The CNC engraving and milling machine for sheet metal processing according to claim 1, characterized in that, Two support pillars are fixedly installed at the bottom of the suspended ring.

4. The CNC engraving and milling machine for sheet metal processing according to claim 1, characterized in that, Both the first and second semicircular plates are provided with adaptive clamping components for clamping the outer surface of the irregularly shaped plate body. The adaptive clamping components include a first arc plate rotatably disposed inside the first and second semicircular plates, and two second arc plates rotatably disposed inside the first arc plate.

5. A CNC engraving and milling machine for sheet metal processing according to claim 4, characterized in that, The second arc-shaped plate has two third arc-shaped plates inside for rotation. The third arc-shaped plates are provided with multiple toothed racks for stable contact with the outer surface of the irregular contour of the plate body.

6. A CNC engraving and milling machine for sheet metal processing according to claim 5, characterized in that, The first arc-shaped plate is provided with a cleaning component, which includes: A hollow semi-circular plate is fixed to the top and bottom of the first arc-shaped plate. Multiple oblique blowing holes are opened on the outer arc-shaped surface of the hollow semi-circular plate to blow away and clean the debris attached to the two sides of the plate body.

7. A CNC engraving and milling machine for sheet metal processing according to claim 6, characterized in that, Pipelines are fixedly installed on the hollow semi-circular plate. The shaft of the second double-rod cylinder is hollow inside, and a slip ring is sleeved on the outside of the shaft of the second double-rod cylinder.

8. A CNC engraving and milling machine for sheet metal processing according to claim 1, characterized in that, The frame is equipped with an X-axis module, and the X-axis module is equipped with a Z-axis module.

9. A CNC engraving and milling machine for sheet metal processing according to claim 8, characterized in that, The drive motor is fixed on the Z-axis module, and the Y-axis module is provided on the top of the base.

10. A CNC engraving and milling machine for sheet metal processing according to claim 1, characterized in that, The processing table is equipped with telescopic plates on both the front and back sides to protect the Y-axis module.

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