Automatic cutting device for aluminum alloy die castings

Abstract

This invention relates to the field of casting cutting technology, and particularly to an automatic cutting device for aluminum alloy die castings; it includes a saw body with a concave structure; a saw blade is provided on the drive end of the saw body; the saw body is also provided with an energy absorption mechanism and a cleaning mechanism; through the coordinated work of the energy absorption mechanism and the cleaning mechanism, this invention absorbs and dissipates the impact energy in real time when the saw blade encounters hard points, effectively suppressing saw blade vibration, while continuously removing the built-up edge adhering to the surface of the saw blade, keeping chip removal smooth, thereby significantly improving cutting quality, extending the service life of the saw blade, and solving the problems of saw blade vibration and chip removal difficulties in the prior art.

Description

Technical Field

[0001] This invention relates to the field of casting cutting technology, and in particular to an automatic cutting device for aluminum alloy die castings. Background Technology

[0002] Aluminum alloy die castings are aluminum alloy parts formed by die casting. They have the advantages of being lightweight and high-strength, having high dimensional accuracy, and high production efficiency. They are widely used in industrial fields such as automobile manufacturing, communication equipment, home appliances, and aerospace. The die casting process involves filling a mold cavity with molten aluminum alloy at high speed under high pressure and then solidifying it under pressure.

[0003] After being die-cast, aluminum alloy die-cast parts usually need to be cut to remove gates, risers, and flash, or to divide the castings into the required sizes. Due to the characteristics of high production volume and high cutting precision requirements of aluminum alloy die-cast parts, band saws are one of the most commonly used cutting equipment. Band saws use a continuous motion of a ring saw blade for cutting, which has the advantages of high cutting efficiency, narrow kerf, low material loss, and suitability for mass production.

[0004] However, the following problems exist in the current cutting process of aluminum alloy die castings: 1. The problem of severe vibration of the saw blade caused by the impact of hard particles. During the die casting process, iron and other alloying elements added to prevent sticking to the mold are prone to forming large and hard intermetallic compound particles, i.e., hard particles, during solidification. These hard particles are randomly distributed inside the die casting and their hardness is much higher than that of the aluminum alloy matrix. When the saw blade encounters hard particles at high speed, it will generate an instantaneous impact load, forcing the saw blade to generate severe lateral vibration in its thickness direction. This vibration leads to saw tooth chipping and saw blade breakage. In the existing technology, rigid guide blocks can only constrain the position of the saw blade and cannot absorb impact energy, which is difficult to meet the actual production needs.

[0005] 2. Chip removal difficulties and surface contamination caused by aluminum chip adhesion: Due to the high silicon content and the presence of low melting point eutectic phase, die-cast aluminum alloy chips are very easy to adhere to the saw blade grooves and sides under high sawing temperatures, forming built-up edge. The periodic shedding of the built-up edge will scratch the machined surface, leading to a deterioration of the surface roughness. At the same time, the tooth groove blockage prevents chips from being discharged normally, and the accumulation of cutting heat intensifies, further worsening the cutting conditions.

[0006] Therefore, the problems of severe saw blade vibration caused by hard point impact and chip removal difficulties caused by aluminum chip adhesion are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0007] In view of the above problems, the present invention provides an automatic cutting device for aluminum alloy die castings to solve the aforementioned technical problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automatic cutting device for aluminum alloy die castings, comprising a saw body with a concave structure; a saw blade is provided on the drive end of the saw body, and an energy absorption mechanism and a cleaning mechanism are also provided on the saw body.

[0009] The energy absorption mechanism includes a support plate fixedly installed on the horizontal section below the main body of the saw. A worktable is fixedly installed on the upper part of the support plate by multiple pillars. A pair of fixed seats are detachably installed on the support plate. The fixed seats have a Z-shaped structure. A pair of levers are rotatably installed on the fixed seats via a shaft. A roller that lightly contacts the saw blade is rotatably installed on the upper end of each pair of levers. A rotating shaft is also rotatably installed on the fixed seats via a shaft seat. A pendulum is movably installed on the rotating shaft. A gear set is provided between the levers and the pendulum. The gear set and the pendulum are magnetically engaged.

[0010] The cleaning mechanism includes a pair of brushes that are slidably mounted on the upper part of a support plate, which is provided with a push-pull section.

[0011] The lever swings when the saw blade vibrates, driving the pendulum to magnetically attract or repel it via the gear set, and driving the pendulum to slide and swing along the axis to absorb vibration energy; the push-pull part drives the brush plate to reciprocate to remove the built-up edge on the saw blade.

[0012] As a preferred embodiment, the push-pull part includes a support plate that is slidably mounted on the support plate and corresponds one-to-one with the brush plate. The brush plate is fixedly mounted on the support plate. A drive plate is fixedly mounted on the upper end of the support plate. A rack is fixedly mounted on the opposite surface of the two drive plates. A spur gear meshes between the two racks. The spur gear is rotatably mounted on the support plate.

[0013] As a preferred embodiment, the lower end of the support plate is provided with a driving component for driving the brush plate to reciprocate. The driving component includes a stepper motor fixedly installed at the lower end of the support plate. The output shaft of the stepper motor rotates through the support plate and is fixedly installed on a turntable. A connecting rod is hinged between the eccentric position of the upper end of the turntable and one of the driving plates.

[0014] As a preferred embodiment, the gear set includes a shaft, with a shaft rotatably mounted on the lower end of each pair of levers, a gear ring coaxial with the corresponding shaft fixedly mounted on the shaft, and a driven gear meshing with the gear ring fixedly mounted on the rotating shaft.

[0015] As a preferred embodiment, the lower horizontal section of the fixing seat is provided with a waist groove, and the support plate is provided with threaded holes that correspond one-to-one with the waist groove.

[0016] As a preferred embodiment, the driven gear has magnets on both its front and rear sides, the pendulum is an electromagnet with changeable magnetic poles, and the shaft is made of a non-magnetic material.

[0017] As a preferred embodiment, the distance between the shaft and the roller is greater than the distance between the shaft and the axle.

[0018] As a preferred embodiment, the roller is made of ceramic.

[0019] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0020] I. This invention, through the coordinated operation of the energy-absorbing mechanism and the cleaning mechanism, absorbs and dissipates the impact energy in real time when the saw blade encounters a hard point, effectively suppressing saw blade vibration. At the same time, it continuously removes the built-up edge adhering to the surface of the saw blade, keeping the chip removal smooth, thereby significantly improving the cutting quality and extending the service life of the saw blade, solving the problems of saw blade vibration and chip removal difficulties in the prior art.

[0021] Second, this invention uses rollers to gently contact the two sides of the saw blade. When the saw blade vibrates, it pushes the lever to swing. Through the magnetic cooperation of the gear set and the pendulum, the kinetic energy of the saw blade vibration is converted into the kinetic energy of the pendulum swing and dissipated. This achieves real-time capture and absorption of impact energy, avoids the transmission of vibration to the sawing area, ensures a flat cut surface without vibration marks, and extends the service life of the saw blade.

[0022] Third, the present invention drives the brush plate to reciprocate in the idle section of the saw blade through the push-pull part, and the brush bristles actively brush the two sides of the saw blade and the tooth groove area, remove the adhering built-up edge in time, prevent the built-up edge from falling off and scratching the cut surface, ensure smooth chip discharge, and avoid the accumulation of cutting heat caused by chip blockage.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the energy absorption mechanism of the present invention.

[0027] Figure 3 This is a schematic diagram of the push-pull part of the present invention.

[0028] Figure 4 This is a schematic diagram of the gear set of the present invention.

[0029] Figure 5This is a schematic diagram of the structure of the driving component of the present invention.

[0030] Reference numerals: 10. Sawing machine body; 11. Saw blade; 2. Energy absorption mechanism; 20. Support plate; 21. Fixed base; 22. Shaft column; 23. Lever; 24. Roller; 25. Rotating shaft; 26. Pendulum; 3. Gear set; 30. Shaft; 31. Gear ring; 32. Driven gear; 4. Cleaning mechanism; 40. Brush plate; 5. Push-pull part; 50. Support plate; 51. Drive plate; 52. Rack; 53. Spur gear; 6. Drive component; 60. Stepper motor; 61. Turntable; 62. Connecting rod. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] like Figure 1 and Figure 2 As shown, an automatic cutting device for aluminum alloy die castings includes a saw body 10 with a concave structure; a saw blade 11 is provided on the drive end of the saw body 10, and an energy absorption mechanism 2 and a cleaning mechanism 4 are also provided on the saw body 10.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the energy absorption mechanism 2 includes a support plate 20 fixedly installed on the horizontal section below the main body 10 of the saw. A worktable is fixedly installed on the upper end of the support plate 20 through multiple pillars. A pair of fixed seats 21 are detachably installed on the support plate 20. The fixed seats 21 have a Z-shaped structure. A pair of levers 23 are rotatably installed on the fixed seats 21 through a shaft 22. A roller 24 that lightly contacts the saw blade 11 is rotatably installed on the upper end of each pair of levers 23. A rotating shaft 25 is also rotatably installed on the fixed seats 21. A pendulum 26 is movably installed on the rotating shaft 25. A gear set 3 is provided between the levers 23 and the pendulum 26. The gear set 3 and the pendulum 26 are magnetically engaged.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the cleaning mechanism 4 includes a pair of brushes 40 that are slidably disposed on the upper end of the support plate 20, and the support plate 20 is provided with a push-pull part 5.

[0035] like Figure 2 and Figure 3As shown, a groove is provided on the lower horizontal section of the fixed seat 21, and threaded holes corresponding to the groove are provided on the support plate 20. By passing an external bolt through the groove and engaging with the threaded hole, the fixed seat 21 can be locked onto the support plate 20. After loosening the bolt, the front and rear positions of the fixed seat 21 can be adjusted along the length of the groove to adapt to the installation requirements of saw blades 11 of different specifications, ensuring that the left and right rollers 24 can accurately and lightly contact the left and right side planes of the saw blade 11, and ensuring the sensing accuracy and consistency of the energy absorption mechanism 2.

[0036] like Figure 2 and Figure 3 As shown, the roller 24 is made of ceramic.

[0037] like Figures 1 to 5 As shown, during actual operation, the saw blade 11 at the drive end of the main body 10 of the sawing machine starts to run continuously, preparing to cut the aluminum alloy die-casting. At the same time, the push-pull part 5 of the cleaning mechanism 4 drives a pair of brushes 40 to reciprocate linearly on the support plate 20. The two brushes 40 are located on the left and right sides of the saw blade 11 respectively. Their bristles continuously brush the two sides of the saw blade 11 and the tooth groove area in the idle section of the saw blade 11 to remove the adhering chip edge. The energy absorption mechanism 2 starts synchronously and is in standby state, working synchronously with the cleaning mechanism 4 without interfering with each other.

[0038] During cutting, the aluminum alloy die-cast part to be cut is conveyed to the worktable position, held by an external robotic arm and moved to the position of the saw blade 11. Then, the robotic arm pushes the aluminum alloy die-cast part towards the saw blade 11 at a set feed speed, so that the saw blade 11 gradually cuts into the aluminum alloy die-cast part. When the saw blade 11 is normally cutting the homogeneous area of ​​the aluminum alloy die-cast part, the energy absorption mechanism 2 is in standby state. The levers 23, which are rotatably mounted on the left and right fixed seats 21 via the shaft column 22, rotate under their own weight, causing the rollers 24 mounted on their upper ends to rotate together, and lightly press against the left side of the saw blade 11 with a small pressure. On the front and right side planes, the roller 24 is made of ceramic material, which has extremely high wear resistance and low coefficient of thermal expansion. It can maintain surface smoothness during long-term contact with the high-speed moving saw blade 11 and will not scratch the saw blade 11 due to burrs or rough surfaces caused by wear. At the same time, the coefficient of friction between the ceramic material and the aluminum alloy saw blade 11 is low, which can reduce contact resistance and avoid additional burden on the normal operation of the saw blade 11. At this time, the saw blade 11 runs smoothly, and the levers 23 on the left and right sides only swing slightly with the slight movement of the saw blade 11, which is not enough to drive the corresponding pendulum 26 through the gear set 3.

[0039] When the saw blade 11 cuts to the location where there are hard points inside the aluminum alloy die casting, the saw teeth collide with the hard points at high speed, generating an instantaneous impact load. This forces the saw blade 11 to vibrate violently from side to side in its thickness direction, directly pushing the corresponding ceramic roller 24 to move. Because the ceramic roller 24 has high surface hardness and is not easily deformed, it can accurately and without damage transmit the thrust of the saw blade 11 to the corresponding lever 23, avoiding energy loss or response delay caused by deformation or wear of the roller 24. The roller 24 drives the lever 23, which is rotatably connected to it, to swing around the shaft column 22. The swing of the lever 23 is transmitted to the corresponding rotating shaft 25 through the magnetic cooperation of the corresponding gear set 3 and the pendulum 26, driving the pendulum 26 on the corresponding rotating shaft 25 to swing.

[0040] With this symmetrical energy absorption mechanism 2 design, no matter whether the saw blade 11 shakes to the left or right, the rollers 24 on both sides always keep in contact with the planes on both sides of the saw blade 11, and the levers 23 on both sides swing synchronously. Through the magnetic force of their respective gear sets 3 and corresponding pendulums 26, the pendulums 26 on both sides are driven to swing, converting the shaking kinetic energy of the saw blade 11 into the swinging kinetic energy of the pendulums 26 on both sides.

[0041] After the impact process ends, the saw blade 11 resumes stable operation, and the levers 23 on both sides float smoothly and no longer drive their respective gear sets 3. At this time, the pendulums 26 on both sides continue to swing under the action of inertia. However, during the swing process, the pendulums 26 are subjected to air resistance and frictional damping at the pivot 25, and their kinetic energy is gradually dissipated. After swinging several times, the pendulums 26 on both sides stop completely and return to their initial position by their own gravity or the action of the reset element, ready to meet the next impact.

[0042] Throughout the cutting process, the push-pull part 5 of the cleaning mechanism 4 continuously drives the brush plate 40 to reciprocate, and the brush bristles continuously brush the two sides of the saw blade 11 and the tooth groove area, removing the adhering burrs. The brushed-off aluminum chips are blown off and collected by the external blower, and will not re-enter the cutting area. After the cutting is completed, the external robotic arm clamps the cut aluminum alloy die casting and removes it, and transports the next aluminum alloy die casting to be cut to the worktable position to start a new round of cutting cycle.

[0043] Through the above-described process, the symmetrically arranged energy-absorbing mechanism 2 accurately senses vibrations and absorbs and dissipates impact energy in real time when the saw blade 11 encounters hard points via the ceramic rollers 24 on both sides, effectively suppressing the vibration of the saw blade 11. The cleaning mechanism 4 continuously removes the built-up edge adhering to the surface of the saw blade 11, ensuring smooth chip removal. Both mechanisms work independently in the idle section of the saw blade 11, without interfering with each other and spatially isolated from the sawing area. The slight pressure of the ceramic rollers 24 on the two sides of the saw blade 11 and the slight contact of the brush bristles with the surface of the saw blade 11 do not interfere with the sawing accuracy, thus solving the vibration and chip removal problems during the sawing process of aluminum alloy die-cast parts.

[0044] like Figure 2 , Figure 3 and Figure 5 As shown, the push-pull part 5 includes a support plate 50 that is slidably mounted on the support plate 20 and corresponds one-to-one with the brush plate 40. The brush plate 40 is fixedly mounted on the support plate 50. A drive plate 51 is fixedly mounted on the upper end of the support plate 50. A rack 52 is fixedly mounted on the opposite surface of the two drive plates 51. A spur gear 53 meshes between the two racks 52. The spur gear 53 is rotatably mounted on the support plate 20.

[0045] like Figure 2 and Figure 5 As shown, the lower end of the support plate 20 is provided with a driving component 6 for driving the brush plate 40 to move back and forth. The driving component 6 includes a stepper motor 60 fixedly installed at the lower end of the support plate 20. The output shaft of the stepper motor 60 rotates through the support plate 20 and is fixedly installed on a turntable 61. A connecting rod 62 is hinged between the upper eccentric position of the turntable 61 and one of the driving plates 51.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, the gear set 3 includes a shaft 30, and the lower end of each pair of levers 23 is rotatably mounted with a shaft 30. A gear ring 31 coaxial with the corresponding shaft column 22 is fixedly mounted on the shaft 30, and a driven gear 32 meshing with the gear ring 31 is fixedly mounted on the rotating shaft 25.

[0047] like Figure 2 , Figure 3 and Figure 4 As shown, the driven gear 32 has magnets on both the front and rear sides, the pendulum 26 is an electromagnet with changeable magnetic poles, and the rotating shaft 25 is made of non-magnetic material.

[0048] like Figure 3 and Figure 4 As shown, the distance between the shaft 22 and the roller 24 is greater than the distance between the shaft 22 and the shaft 30, so that the lever 23 forms a force-amplifying structure. When the saw blade 11 vibrates and pushes the roller 24 to produce a small displacement, the end of the shaft 30 can obtain an amplified displacement and force, thereby driving the gear set 3 and the pendulum 26 to move more effectively and improving the sensitivity to capture impact energy.

[0049] like Figures 1 to 5As shown, during actual operation, the stepper motor 60 of the cleaning mechanism 4 starts, and its output shaft drives the turntable 61 to rotate. The connecting rod 62 at the upper end of the turntable 61 drives the corresponding drive plate 51 to move back and forth. The drive plate 51 drives its corresponding support plate 50 and brush plate 40 to slide on the support plate 20. At the same time, the rack 52 on the drive plate 51 moves accordingly. The rack 52 meshes with the spur gear 53. After the spur gear 53 rotates, it drives the rack 52 on the other side to move in the opposite direction, thereby causing the other drive plate 51, support plate 50 and brush plate 40 to move in the opposite direction synchronously. Thus, the two brush plates 40 make reciprocating linear motions in opposite directions on the support plate 20. The bristles located on the left and right sides of the saw blade 11 continuously brush the two sides of the saw blade 11 and the tooth groove area in the idle section of the saw blade 11 to remove the adhering debris.

[0050] When the saw blade 11 cuts to a location inside the workpiece where there are hard points, the saw blade 11 will produce violent left-right lateral vibrations. The saw blade 11 will push the corresponding roller 24 to move, and the roller 24 will drive the corresponding lever 23 to swing. The shaft 30 at the lower end of the lever 23 will rotate accordingly. The gear ring 31 fixedly installed on the shaft 30 drives the driven gear 32 meshing with it to rotate. The driven gear 32 is fixedly installed on the rotating shaft 25, and the rotating shaft 25 will rotate accordingly. The pendulum 26 slidably installed on the rotating shaft 25 is an electromagnet. The energy absorption mechanism 2 is equipped with a control system. The control system is an existing structure that mainly includes displacement. The device consists of a sensor, a controller, and a drive circuit. The output of the controller is electrically connected to the pendulums on both sides through the drive circuit. When the displacement sensor detects that the saw blade 11 vibrates too much, the controller sends a current in the corresponding direction to the pendulum 26 through the drive circuit according to the vibration direction of the saw blade 11. This causes the magnetic pole of the pendulum 26 on the side closest to the driven gear 32 to be opposite to the magnetic poles of the magnets set on the front and rear sides of the driven gear 32, generating a magnetic force that attracts opposite poles. The pendulum 26 is attracted by the magnetic force and slides along the shaft 25 toward the driven gear 32 and is attracted to it. At the same time, the magnetic force drives the pendulum 26 to swing together with the shaft 25.

[0051] The control system adjusts the energizing direction and on / off state of the pendulums 26 on both sides in real time according to the shaking direction of the saw blade 11. In each shaking, the pendulum 26 in the driving direction attracts and is driven and accelerated by the driven gear 32, while the pendulum 26 in the non-driving direction is repelled and separated from the gear and does not participate in the driving. Each shaking converts a small part of the impact kinetic energy into the swing kinetic energy of the pendulum 26. As the high-frequency shaking continues, the kinetic energy of the pendulum 26 continues to accumulate, and the swing amplitude gradually increases.

[0052] After the impact process ends, the saw blade 11 resumes stable operation, and the levers 23 on both sides are no longer pushed by the saw blade 11 and gradually stop swinging. At this time, the controller of the control system sends a reverse current to the pendulums 26 on both sides through the drive circuit, so that the magnetic pole of the side close to the driven gear 32 is the same as the magnetic pole of the magnet on the driven gear 32, generating a magnetic force of like poles repulsion, pushing the pendulum 26 away to a position where it is completely out of contact with the driven gear 32. The pendulum 26 continues to swing back and forth under the action of inertia, and the swing process is completely unaffected by the driven gear 32 and the levers 23. The kinetic energy of the pendulum 26 is gradually dissipated through air resistance and sliding friction between the pendulum 26 and the rotating shaft 25. After swinging several times, the pendulum 26 stops completely and returns to the initial position of the rotating shaft 25 under its own gravity, ready to receive the next impact.

[0053] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic cutting device for aluminum alloy die castings, comprising a saw bed main body in a concave structure; characterized in that: The main body of the sawing machine is equipped with a saw blade at the drive end, and the main body of the sawing machine is also equipped with an energy absorption mechanism and a cleaning mechanism; The energy absorption mechanism includes a support plate fixedly installed on the horizontal section below the main body of the saw. A worktable is fixedly installed on the upper part of the support plate by multiple pillars. A pair of fixed seats are detachably installed on the support plate. The fixed seats have a Z-shaped structure. A pair of levers are rotatably installed on the fixed seats through a shaft column. The upper end of each pair of levers is rotatably installed with a roller that lightly contacts the saw blade. A rotating shaft is also rotatably installed on the fixed seats through a shaft seat. A pendulum is movably installed on the rotating shaft. A gear set is set between the levers and the pendulum. The gear set and the pendulum are magnetically engaged. The cleaning mechanism includes a pair of brushes that are slidably mounted on the upper part of a support plate, and the support plate is provided with a push-pull part; The gear set includes a shaft, and the lower end of each pair of levers is rotatably mounted with a shaft. A toothed ring coaxial with the corresponding shaft is fixedly mounted on the shaft, and a driven gear meshing with the toothed ring is fixedly mounted on the rotating shaft. The driven gear has magnets on both the front and rear sides, the pendulum is an electromagnet with changeable magnetic poles, and the rotating shaft is made of non-magnetic material. The lever swings when the saw blade vibrates, driving the pendulum to magnetically attract or repel it via the gear set, and driving the pendulum to slide and swing along the axis to absorb vibration energy; the push-pull part drives the brush plate to reciprocate to remove the built-up edge on the saw blade.

2. The automatic cutting device for aluminum alloy die casting according to claim 1, characterized in that: The push-pull part includes a support plate that is slidably mounted on the support plate and corresponds one-to-one with the brush plate. The brush plate is fixedly mounted on the support plate. A drive plate is fixedly mounted on the upper end of the support plate. A rack is fixedly mounted on the opposite side of the two drive plates. A spur gear meshes between the two racks. The spur gear is rotatably mounted on the support plate.

3. The automatic cutting device for aluminum alloy die castings according to claim 2, characterized in that: The lower end of the support plate is provided with a driving component for driving the brush plate to move back and forth. The driving component includes a stepper motor fixedly installed at the lower end of the support plate. The output shaft of the stepper motor rotates through the support plate and is fixedly installed on a turntable. The upper eccentric position of the turntable is hinged to one of the driving plates by a connecting rod.

4. The automatic cutting device for aluminum alloy die casting according to claim 1, characterized in that: The lower horizontal section of the fixed seat is provided with a groove, and the support plate is provided with threaded holes that correspond one-to-one with the groove.

5. The automatic cutting device for aluminum alloy die castings according to claim 1, characterized in that: The distance between the shaft and the roller is greater than the distance between the shaft and the axle.

6. The automatic cutting device for aluminum alloy die castings according to claim 1, characterized in that: The rollers are made of ceramic.

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