A cutting equipment for automobile aluminum alloy die castings

Abstract

This invention relates to the field of edge trimming technology for aluminum alloy die castings, specifically to an edge trimming device for automotive aluminum alloy die castings, comprising: a circular saw, rotatably mounted on the upper part of a work platform, with multiple cutters evenly distributed around the axis of the circular saw on its outer periphery; multiple first guide channels, arranged in two groups, each group containing the same number of first guide channels as the number of cutters, the two groups being located at opposite ends of the circular saw, with all first guide channels in each group radially distributed around the center of the circular saw; two collecting channels, each communicating with one of the two groups of guide channels, located at the center of opposite ends of the circular saw; and a water supply shell, located on the side of the collecting channels away from the circular saw and communicating with the collecting channels, with a lubricating fluid supply system connected to the water supply shell. This invention reduces the probability of built-up edge formation and improves the edge trimming quality of the die castings.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy die casting edge trimming technology, specifically to an edge trimming device for automotive aluminum alloy die castings. Background Technology

[0002] After die casting, existing automotive aluminum alloy die-cast parts have burrs and cooling runners at their edges. Therefore, edge trimming is necessary, primarily achieved using die-casting edge trimming equipment. Various types of edge trimming equipment exist, such as integrated edge trimming machines (which use two trimming molds to completely remove burrs from the die-cast part's edges), CNC milling machines (which use milling cutters to mill the edges of the die-cast part), and circular saw edge trimming machines (which use a circular saw to roughly cut the burrs on the die-cast part, producing a straight cut; this type can be used in conjunction with CNC milling machines, first roughing with the circular saw and then finishing with the CNC milling machine). A search revealed Chinese Patent Publication No. CN222985839U, which discloses a cutting device for automotive aluminum alloy die-cast parts. This device includes a cutting blade for cutting the die-cast parts, and a linear actuator drives the blade to move and complete the cutting. However, this solution only provides vertical clamping and fixation for the die-cast parts during the cutting process, lacking lateral constraint and resulting in poor stability. Furthermore, the lateral cutting force generated when the circular saw blade cuts into the die-cast part, without lateral restraint, makes it prone to lateral displacement or deflection. In severe cases, this can lead to the cutting blade breaking or the die-cast part being blown away, resulting in low safety. Therefore, existing circular saw-type cutting devices are equipped with multi-directional restraint mechanisms to limit the movement of the die-cast parts.

[0003] However, the edge-cutting of aluminum alloy die-cast parts still faces the problem of built-up edge (BUE). Due to its low hardness and high plasticity, aluminum alloys, under medium cutting temperature ranges, exhibit chip adhesion (cold welding) between the bottom layer of chips and the circular saw blade face under high pressure, forming a stagnant layer that gradually accumulates into a BUE. The formation of BUE is closely related to factors such as cutting speed, cutting temperature, feed rate, tool rake angle, and workpiece material plasticity. Existing solutions involve using cooling and lubrication to reduce the temperature of the circular saw's working position. This involves using a large amount of lubricant to rush towards the working area of ​​the circular saw. The lubricant both cools the area and forms a protective layer at the saw blade tip, thus reducing the probability of aluminum alloy chips adhering to the saw blade tip. However, when the circular saw blade rotates at high speed, it creates accompanying airflow (air barrier) on and around the blade surface. This airflow pushes away the lubricant rushing towards the saw, causing a large amount of lubricant to be deflected before reaching the cutting area. Only a portion of the lubricant actually acts on the saw blade tip, resulting in limited cooling effect and requiring a large supply of lubricant. Summary of the Invention

[0004] To address the aforementioned issues, a cutting device for automotive aluminum alloy die-cast parts is provided. This device operates in conjunction with a working platform, a limiting and pushing unit, a circular saw, radially distributed first guide channels, a collecting channel, and a water supply shell. Utilizing the lubricant delivery structure comprised of the water supply shell, collecting channel, and first guide channels, the device leverages the centrifugal force of the rotating circular saw to deliver the lubricant. This reduces the obstruction and interference of the accompanying airflow generated during the circular saw's rotation on the lubricant, increases the effective throughput of lubricant reaching the cutting area of ​​the cutter head, improves the lubrication and cooling effect of the cutter head, reduces the phenomenon of cold welding and adhesion of aluminum chips, and lowers the probability of built-up edge formation.

[0005] To address the problems of existing technologies, this invention provides a trimming device for automotive aluminum alloy die-cast parts, comprising a working platform, a trimming unit, and a limiting and pushing unit; The trimming unit includes: A circular saw is rotatably mounted on the upper part of the work platform, and multiple cutting heads are evenly distributed around the axis of the circular saw on its outer periphery. The first guide groove is provided in multiple ways and divided into two groups. The number of first guide grooves in each group is the same as the number of the cutter head. The two groups are respectively provided at both ends of the circular saw. All the first guide grooves in each group are radially distributed around the center of the circular saw. Two collection channels are provided and are respectively connected to the two sets of the flow guide groups. The two collection channels are respectively located at the center of both ends of the circular saw. A water supply shell is located on the side of the collection tank away from the circular saw and is connected to the collection tank. A lubricating fluid supply system is connected to the outside of the water supply shell.

[0006] Preferably, the cutting edge unit further includes: The cover plate is circular in shape and there are two of them. The two cover plates are coaxially arranged at both ends of the circular saw. The cover plates and the first guide groove form a sealed flow channel.

[0007] Preferably, a water inlet is provided through the cover plate along the axis of the cover plate, and one end of the water supply shell is rotatably connected to the water inlet.

[0008] Preferably, the cutting edge unit further includes: Two frustum components are provided and are respectively located at both ends of the circular saw. The frustum components are coaxially and fixedly connected to the circular saw. The end of the frustum component with the smaller diameter is away from the circular saw. The frustum component and the cover plate together form the collecting groove.

[0009] Preferably, the cutting edge unit further includes: The second guide groove corresponds to and is connected to the sealed flow channel, and the second guide groove extends to one side of the root of the cutter head; The third guide groove corresponds one-to-one with the cutter head and is formed on the circular saw. The third guide groove connects the two second guide grooves on both sides of the same cutter head and extends to the root of the cutter head.

[0010] Preferably, a guide block is provided inside the sealed flow channel near one end of the cutter head. The guide block is fixedly disposed at the end of the cover plate facing the circular saw. The end face of the guide block facing the circular saw is inclined from the cover plate to the end face of the circular saw along the flow direction of the lubricating fluid in the first guide groove.

[0011] Preferably, multiple cutting units are arranged horizontally, and in the direction of arrangement of the cutting units, the vertical distance from the bottom of the circular saw in the cutting unit to the working platform decreases linearly from the feed end of the cutting device.

[0012] Preferably, the upper part of the circular saw is fitted with a splash guard.

[0013] Preferably, each of the cutting edge units is vertically provided with a linear driver at its upper part. The linear driver is used to drive the cutting edge unit to rise and fall. When the cutting edge unit rises and falls, it forms a lifting path. A cleaning unit for cleaning the circular saw is provided on one side of the highest point of the lifting path.

[0014] Preferably, the cleaning unit includes: A cleaning roller is rotatably mounted on one side of the lifting path; A second rotary drive is disposed at the end of the cleaning roller and is used to drive the cleaning roller to rotate.

[0015] The advantages of this invention compared to the prior art are: 1. This invention operates in conjunction with a working platform, a limiting pusher unit, a circular saw, a radially distributed first guide channel, a collection channel, and a water supply shell. Relying on the lubricant delivery structure composed of the water supply shell, the collection channel, and the first guide channel, the lubricant is delivered by the centrifugal force of the circular saw rotation. This reduces the obstruction and interference of the accompanying airflow generated during the circular saw rotation on the lubricant, increases the effective throughput of the lubricant to the cutting area of ​​the cutter head, improves the lubrication and cooling effect of the cutter head, reduces the phenomenon of cold welding and adhesion of aluminum chips, reduces the probability of built-up edge formation, slows down the wear rate of the cutter head, and can also use the lubricant to flush away surface debris, thus optimizing the basic quality of the workpiece cutting edge.

[0016] 2. By adding a cover plate, water inlet, frustum component, second guide channel, third guide channel, and guide block, the lubricant delivery structure is optimized. The cover plate and the first guide channel form a sealed flow channel, reducing lubricant leakage and improving the rotational stability of the circular saw. By making the water supply shell and the cover plate rotatably connected, uninterrupted lubricant replenishment is achieved. The inclined sidewall of the frustum component completes the uniform distribution of lubricant. Combined with the guide block, second guide channel, and third guide channel, the lubricant is accurately delivered to the root of the cutter head, further reducing ineffective lubricant loss, improving the cooling effect and chip flushing effect in the high-temperature cutting area, balancing the fluid supply of each cutter head, further inhibiting the adhesion of built-up edge, and thus optimizing the flatness of the workpiece cutting edge.

[0017] 3. By deploying multiple sets of cutting edge units with decreasing heights, splash guards, linear actuators, and matching cleaning units, the staggered arrangement of the cutting edge units distributes the feed rate of a single cut, alleviating the cutting load and temperature rise pressure of a single saw blade, and slowing down the wear of the saw head and the adhesion rate of built-up edge; the splash guards constrain the splash range of debris and lubricant, optimizing the cleanliness of the equipment's working surface and improving operational safety; the linear actuators enable independent lifting and lowering of each cutting edge unit, and the cleaning rollers complete the on-demand cleaning of the saw head, removing debris and adhered blanks in advance, reducing manual maintenance workload, maintaining the cutting accuracy of the saw head, and extending the maintenance and replacement cycle of the circular saw and the overall service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a cutting device for automotive aluminum alloy die-casting parts according to the present invention.

[0019] Figure 2 This is a three-dimensional schematic diagram of the edge-cutting device for automotive aluminum alloy die-casting parts after the outer shell has been removed.

[0020] Figure 3 This is a planar schematic diagram of the edge-cutting device for automotive aluminum alloy die-casting parts after the outer shell has been removed.

[0021] Figure 4 This is a three-dimensional schematic diagram of the assembly of the trimming unit, bracket, linear driver and first rotary driver in the trimming equipment for automotive aluminum alloy die castings of the present invention.

[0022] Figure 5 This is a three-dimensional schematic diagram of the trimming unit in a trimming device for automotive aluminum alloy die-casting parts according to the present invention.

[0023] Figure 6 This invention relates to a trimming device for automotive aluminum alloy die-cast parts. Figure 5 A magnified view of a portion of point A in the middle.

[0024] Figure 7This is a partial cross-sectional three-dimensional schematic diagram of the trimming unit in the trimming equipment for automotive aluminum alloy die castings of the present invention.

[0025] Figure 8 This is a schematic cross-sectional view of the cutting unit in the cutting equipment for automotive aluminum alloy die castings of the present invention.

[0026] Figure 9 This is an exploded three-dimensional schematic diagram of the trimming unit in a trimming device for automotive aluminum alloy die-casting parts according to the present invention. Figure 1 .

[0027] Figure 10 This is an exploded three-dimensional schematic diagram of the trimming unit in a trimming device for automotive aluminum alloy die-casting parts according to the present invention. Figure 2 .

[0028] The following are the labels in the diagram: 1. Working platform; 2. Trimming unit; 21. Circular saw; 211. Cutting head; 22. First guide channel; 23. Collection channel; 24. Water supply shell; 25. Cover plate; 251. Water inlet; 252. Guide block; 26. Frustum component; 27. Second guide channel; 28. Third guide channel; 3. Limiting and pushing unit; 4. Support; 5. First rotary driver; 6. Splash shield; 7. Linear driver; 8. Cleaning unit; 81. Cleaning roller; 82. Second rotary driver. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 5 , Figure 7 and Figure 8 A cutting device for die-cast aluminum alloy parts for automobiles, comprising a working platform 1, a cutting unit 2, and a limiting and pushing unit 3; The cutting unit 2 includes: A circular saw 21 is rotatably mounted on the upper part of the working platform 1, and multiple cutter heads 211 are evenly distributed around the axis of the circular saw 21 on its outer periphery. The first guide groove 22 is provided in multiple ways and divided into two groups. The number of first guide grooves 22 in each group is the same as that of the cutter head 211. The two groups are respectively provided at both ends of the circular saw 21. All the first guide grooves 22 in each group are radially distributed around the center of the circular saw 21. There are two collection channels 23, which are respectively connected to the two sets of flow guide groups. The two collection channels 23 are respectively located at the center of both ends of the circular saw 21. A water supply shell 24 is located on the side of the collection tank 23 away from the circular saw 21 and is connected to the collection tank 23. A lubricating fluid supply system is connected to the water supply shell 24.

[0031] The limiting and pushing unit 3 can limit the die casting and push the limited die casting towards the circular saw 21. Since the limiting and pushing unit 3 is existing technology, it will not be described in detail here.

[0032] A bracket 4 is provided on the upper part of the circular saw 21. The circular saw 21 is rotatably mounted on the bracket 4. A first rotary driver 5 is horizontally mounted on the bracket 4. The first rotary driver 5 is used to drive the circular saw 21 to rotate. The first rotary driver 5 is preferably a servo motor.

[0033] During equipment operation, the worker places the automotive aluminum alloy die-cast part to be processed into the limiting push unit 3 on the upper part of the work platform 1 through the feeding end of the equipment. After entering the corresponding processing parameters for the die-cast part, the limiting push unit 3 completes the clamping operation of the die-cast part and pushes the clamped and fixed die-cast part towards the cutting unit 2. At this time, the cutting unit 2 is started, and the lubricating fluid supply system continuously delivers lubricating fluid into the water supply shell 24 of the cutting unit 2. The lubricating fluid is introduced into the corresponding collection tank 23 through the water supply shell 24. There is a collection tank 23 at both ends of the circular saw 21. The collecting trough 23 can guide the lubricant to the two sets of guide groups respectively. Since all the first guide channels 22 in each guide group are arranged radially, the collecting trough 23 can guide the lubricant to the first guide channel 22. During the rotation of the circular saw 21, the end first guide channel 22 is driven to rotate synchronously. Relying on centrifugal force, the lubricant inside the guide channel is continuously transported to the cutter head 211. When the circular saw 21 cuts the burrs and casting channels of the die casting, the lubricant flows continuously to the cutter head 211 under the guidance of the first guide channel 22, thereby completing the continuous cooling of the cutter head 211.

[0034] By using the limiting and pushing unit 3 to provide multi-directional limiting constraints on the automotive aluminum alloy die-casting parts, the fixing effect during the die-casting cutting process is optimized, reducing the probability of workpiece displacement or deflection during cutting. This reduces the risk of blade damage and workpiece detachment from the processing station, improving equipment operation safety and processing stability. At the same time, the integrated lubricant delivery structure formed by the water supply shell 24, the collecting groove 23, and the radially arranged first guide groove 22 reduces the obstruction effect of the accompanying airflow generated by the high-speed rotation of the circular saw 21 on the lubricant, reduces ineffective lubricant loss, and increases the effective throughput of lubricant reaching the cutting area of ​​the circular saw 211 cutter head 211. This optimizes the cooling and lubrication effect in the cutting area, reduces the adhesion and cold welding phenomenon between chips and the cutter head 211 during the cutting of aluminum alloy workpieces, thereby reducing the probability of built-up edge formation. In addition, due to the improved cooling effect on the cutter head 211, the wear degree of the cutter head 211 is also reduced, extending the overall service life of the circular saw 21.

[0035] In addition, the lubricating fluid delivered by the lubricating fluid delivery structure can flush away the machining debris adhering to the surface of the cutter head 211, optimize the edge cutting and forming quality of the die-cast parts, and reduce equipment operation and maintenance and manual cleaning costs.

[0036] Reference Figure 7 and Figure 8 The cutting edge unit 2 further includes: The cover plate 25 is circular and there are two of them. The two cover plates 25 are coaxially arranged at both ends of the circular saw 21. The cover plate 25 and the first guide groove 22 form a sealed flow channel.

[0037] During equipment operation, the sealed flow channel guides the lubricant, causing it to flow toward the cutter head 211, and the sealed flow channel can constrain the flow trajectory of the lubricant.

[0038] The sealed flow channel formed by the cover plate 25 and the first guide groove 22 can constrain the flow path of the lubricant, reduce the leakage of lubricant from the first guide groove 22 during the rotation of the circular saw 21, reduce unnecessary consumption of lubricant, and allow the lubricant to flow towards the cutter head 211 as much as possible to cool the cutter head 211. At the same time, it can also reduce the phenomenon of the first guide groove 22 stirring the surrounding air and forming additional airflow when the circular saw 21 is rotating, thereby reducing the resistance encountered by the circular saw 21 due to the open first guide groove 22 when it is rotating, and improving the overall rotational stability of the circular saw 21.

[0039] Reference Figure 9 and Figure 10 A water inlet 251 is provided through the cover plate 25 along the axis of the cover plate 25, and one end of the water supply shell 24 is rotatably connected to the water inlet 251.

[0040] The water supply shell 24 is fixedly mounted on the bracket 4.

[0041] During the operation of the cover plate 25 rotating with the circular saw 21, the water supply shell 24 remains stationary, and the lubricating fluid continuously flows through the water supply shell 24 and into the rear collection tank 23 via the water inlet 251, completing the uninterrupted supply and delivery of lubricating fluid.

[0042] By rotating the water supply shell 24 and the water inlet 251 of the cover plate 25, the lubricant supply channel is kept continuously connected while the circular saw 21 is rotating continuously to carry out the cutting operation. The lubricant can be continuously replenished without stopping the machine, ensuring that the lubrication and cooling operation is carried out uninterrupted throughout the cutting process. This adapts to the continuous cutting processing requirements of the equipment, maintains a stable lubrication and cooling condition in the cutting area, and slows down the temperature rise rate of the cutter head 211.

[0043] Reference Figures 7 to 9 The cutting edge unit 2 further includes: Two frustum components 26 are provided and are respectively provided at both ends of the circular saw 21. The frustum components 26 are coaxially and fixedly connected to the circular saw 21. The smaller diameter end of the frustum component 26 is away from the circular saw 21. The frustum component 26 and the cover plate 25 together form the collecting groove 23.

[0044] The frustum 26 and the corresponding cover plate 25 cooperate to form a collection trough 23. After the lubricating fluid introduced through the inlet 251 enters the collection trough 23, under the guidance of the inclined side wall of the frustum 26, the lubricating fluid in the collection trough 23 is evenly distributed to the first guide trough 22 of each group. The even distribution and guidance of the lubricating fluid is completed in conjunction with the rotation of the circular saw 21.

[0045] By setting the frustum 26, the frustum 26 and the cover plate 25 together form the collecting groove 23, which ensures that when the lubricant is discharged into the collecting groove 23, the inclined side wall of the frustum 26 can be used to guide and distribute the lubricant inside the collecting groove 23. At the same time, under the action of the centrifugal force generated after the circular saw 21 rotates, the lubricant that is concentratedly input can be evenly distributed to all the first guide grooves 22, which improves the problem of uneven distribution of lubricant or insufficient supply of lubricant to some first guide grooves 22, and improves the uniformity of lubricant supply at each cutter head 211 position.

[0046] Reference Figure 6 and Figure 9 The cutting edge unit 2 further includes: The second guide groove 27 corresponds to and is connected to the sealed flow channel, and the second guide groove 27 extends to one side of the root of the cutter head 211. The third guide groove 28 corresponds one-to-one with the cutter head 211 and is formed on the circular saw 21. The third guide groove 28 connects the two second guide grooves 27 on both sides of the same cutter head 211 and extends to the root of the cutter head 211.

[0047] Each group of sealed flow channels is connected to a second flow guide groove 27, which extends to one side of the root of the cutter head 211. A third flow guide groove 28 is provided between two second flow guide grooves 27 located on both sides of the same cutter head 211 to connect the two. The third flow guide groove 28 extends to the root of the cutter head 211.

[0048] When the cutting unit 2 is running, the lubricant flows out through the sealed flow channel and then flows into the second guide groove 27. Finally, it is accurately delivered to the root position of the cutter head 211 through the third guide groove 28. The centrifugal force of the circular saw 21 accelerates the flow of the lubricant in the first guide groove 22, the second guide groove 27 and the third guide groove 28.

[0049] By setting a second guide channel 27 and a third guide channel connected to the first guide channel 22, the lubricant is precisely guided to the core cutting area at the root of the cutter head 211. This overcomes the shortcomings of traditional lubricant spraying from a distance, which makes it difficult to reach the cutting contact surface. It further avoids the problem of the circular saw 21 blocking the lubricant with the accompanying airflow, improves the lubricant coverage on the cutting surface, enhances the cooling efficiency of the high-temperature area at the root of the cutter head 211, and can use the directionally delivered lubricant to promptly flush away aluminum debris attached to the root of the cutter head 211, reducing the degree of cold welding adhesion of debris, further inhibiting the adhesion and formation of built-up edge, and slowing down the high-temperature wear rate at the root of the cutter head 211. This also optimizes the flatness of the cut edge of the die-cast part, thereby improving the cut edge quality of the die-cast part.

[0050] Reference Figure 10 A guide block 252 is provided inside the sealed flow channel near the end of the cutter head 211. The guide block 252 is fixedly disposed at the end of the cover plate 25 facing the circular saw 21. The end face of the guide block 252 facing the circular saw 21 is inclined from the cover plate 25 toward the end face of the circular saw 21 along the flow direction of the lubricating fluid in the first guide groove 22.

[0051] After the lubricating fluid is output along the sealed flow channel, it is deflected and guided by the inclined guide block 252 end face, which directs the lubricating fluid into the second guide groove 27 and constrains the flow direction of the lubricating fluid.

[0052] The inclined guide block 252 corrects and guides the flow of lubricating fluid out of the sealed flow channel, reducing the possibility of lubricating fluid scattering or deviating from the guide path after flowing out of the sealed flow channel. This increases the flow rate of lubricating fluid into the second guide groove 27, reduces the amount of ineffective lubricating fluid loss, and further improves the efficiency of lubricating fluid delivery. This ensures that a sufficient amount of lubricating fluid stably reaches the cutting position of the cutter head 211, thereby improving the cooling effect and chip flushing effect on the high-temperature cutting area and helping to reduce the amount of built-up edge adhering to the cutter head 211.

[0053] Reference Figures 1 to 10 Multiple cutting units 2 are arranged horizontally. In the arrangement direction of the cutting units 2, the vertical distance from the bottom of the circular saw 21 in the cutting unit 2 to the working platform 1 decreases linearly from the feed end of the cutting device.

[0054] Multiple cutting units 2 are arranged horizontally. Starting from the feed end of the equipment, the vertical height of the bottom of the circular saw 21 inside each cutting unit 2 from the working platform 1 decreases sequentially. The limiting push unit 3 pushes the die casting through each cutting unit 2 in sequence. Multiple circular saws 21 with different heights work together to complete the cutting operation on the edge burrs or casting channels of the die casting step by step, and distribute the feed amount of a single cutting operation.

[0055] Multiple staggered cutting units 2 are used to complete the cutting process in steps, distributing the single cutting feed of a single circular saw 21. This alleviates the problem of excessive instantaneous cutting load and rapid temperature rise when a single cutting unit is cutting. It also reduces the probability of aluminum alloy chips sticking to the cutter head 211 under high feed conditions, reduces the heat dissipation pressure caused by continuous operation of a single circular saw 21 for a long time, and alleviates the problem of high temperature and subsequent wear and built-up edge adhesion of a single cutter head 211 due to long-term operation. At the same time, it reduces the cutting load of a single circular saw 21 and extends the service life of the circular saw 21.

[0056] Reference Figure 4 The upper part of the circular saw 21 is fitted with a splash guard 6.

[0057] By installing a splash guard 6 on the upper part of the circular saw 21, when the circular saw 21 rotates, the splash guard 6 can prevent aluminum chips and lubricating fluid generated during cutting from splashing outwards, reducing the probability of chips and lubricating fluid falling onto the work platform 1 and the surrounding area of ​​the equipment. This optimizes the cleanliness of the work platform 1, reduces the risk of dirt accumulation and chip jamming, reduces the workload of subsequent overall equipment cleaning, and avoids high-speed splashing chips from interfering with surrounding operators, thus slightly improving the safety of equipment operation.

[0058] Reference Figures 2 to 4 Each of the cutting edge units 2 is vertically provided with a linear driver 7 at its upper part. The linear driver 7 is used to drive the cutting edge unit 2 to rise and fall. When the cutting edge unit 2 rises and falls, it forms a lifting path. A cleaning unit 8 for cleaning the circular saw 21 is provided on one side of the highest point of the lifting path.

[0059] After the cutting unit 2 completes the cutting operation of the die casting in one go, the linear drive 7 drives the corresponding cutting unit 2 to lift, so that the circular saw 21 moves to the corresponding station of the cleaning unit 8 to wait for the cleaning operation.

[0060] The linear actuator 7 independently controls the lifting and lowering of a single cutting unit 2, enabling the cutting unit 2 to be lifted independently after a single cut without affecting the synchronous processing of the other cutting units 2, ensuring the continuous processing efficiency of the equipment. At the same time, the used circular saw 21 is immediately moved to one side of the cleaning unit 8, and then the cleaning unit 8 cleans the circular saw 21, avoiding the situation where some debris is not cleaned in time and adheres to the cutter head 211, thereby improving the quality of the circular saw 21 when cutting subsequent die-cast parts.

[0061] Reference Figure 4 The cleaning unit 8 includes: Cleaning roller 81 is rotatably mounted on one side of the lifting path; The second rotary driver 82 is disposed at the end of the cleaning roller 81 and is used to drive the cleaning roller 81 to rotate.

[0062] The cleaning roller 81 enables the circular saw 211 to be cleaned as needed. It can remove residual aluminum shavings and adhered blanks from the surface of the blade head 211 before the built-up edge completely solidifies and forms. This slows down the build-up edge accumulation and reduces the probability of stubborn deposits adhering to the blade head. It also reduces the frequency and workload of manual disassembly and cleaning of the circular saw 211, maintains the flatness of the cutting edge of the blade head 211, ensures the cutting accuracy of the circular saw 211 under long-term cutting conditions, reduces the cutting vibration problem caused by deposits on the blade head 211, and further extends the maintenance and replacement cycle of the circular saw 211.

[0063] Working principle: When trimming automotive aluminum alloy die-cast parts, the die-cast parts are first placed in the limiting pusher unit 3. One side of the trimming equipment has a feed end for placing the die-cast parts. The operator completes the feeding of the die-cast parts through the feed end. A touch screen is also set on the upper part of the work platform 1. The operator can input the three-dimensional parameters and cutting data of the die-cast parts into the trimming equipment through the touch screen.

[0064] Subsequently, the limiting and pushing unit 3 clamps the die casting and pushes it toward the cutting unit 2. Multiple cutting units 2 are provided, and along the feeding direction of the die casting, the vertical distance between the lower part of the circular saw 21 and the working platform 1 in each cutting unit 2 gradually decreases. Therefore, when the cutting unit 2 cuts the die casting, all cutting units 2 will cut the die casting. This avoids the situation where the feed amount is too large and the built-up edge sticks to the cutter head 211 when using a single cutting unit 2 to cut the die casting. At the same time, it can also avoid the situation where the circular saw 21 is difficult to cool down due to long-term operation when using a single cutting unit 2, which may lead to wear of the cutter head 211 or the built-up edge sticking to the cutter head 211 due to high temperature.

[0065] During the cutting process of the die-cast part by a single circular saw 21, the lubricating fluid supply system continuously supplies lubricating fluid to the water supply shell 24. The lubricating fluid enters the manifold through the inlet 251 on the cover plate 25. Since the manifold is composed of the frustum 26 and the cover plate 25, and the cover plate 25 is fixedly connected to the end of the circular saw 21, the lubricating fluid is guided by the inclined surface of the frustum 26 after entering the manifold. Under the guidance of the frustum 26, the lubricating fluid flows evenly to the radially arranged first guide channel 22. Because the cover plate 25 is set at the end of the circular saw 21, the first guide channel 22 and the cover plate 25 form a sealed flow channel. The sealed flow channel can not only prevent the lubricating fluid from leaking out when the circular saw 21 rotates, but also prevent the first guide channel 22 from disturbing the surrounding air when it rotates with the circular saw 21, thus improving the stability of the circular saw 21 rotation.

[0066] The sealed flow channel guides the lubricant to the second guide groove 27. When the lubricant is discharged from the sealed flow channel, it flows towards the end of the circular saw 21 under the guidance of the guide block 252, ensuring that most of the lubricant can flow into the second guide groove 27. Then, under the guidance of the second guide groove 27, the lubricant flows into the third guide groove 28. The third guide groove 28 accurately guides the lubricant to the root of the cutter head 211, so that the lubricant can stably cool the cutter head 211. This avoids the situation in traditional lubrication and cooling methods where a large amount of lubricant is injected, but due to the airflow generated by the high-speed rotation of the circular saw 21, only a portion of the lubricant can cool the circular saw 21, and effective cooling cannot be achieved.

[0067] At the same time, the lubricant discharged from the root of the cutter head 211 can promptly wash away the debris that has just adhered to the cutter head 211.

[0068] In addition, since the first guide grooves 22 are arranged radially, when the circular saw 21 rotates, under the action of centrifugal force, the lubricant can always cool the cutter head 211 through each of the first guide grooves 22, the second guide groove 27 and the third guide groove 28, ensuring that the cutter head 211 is always in a cooled state. This not only avoids the case of the cutter head 211 being worn due to excessive temperature, but also prevents aluminum alloy debris from sticking to the cutter head 211 and forming a built-up edge.

[0069] Since there are multiple cutting units 2, each time a cutting unit 2 completes its cutting work, the linear driver 7 drives the support 4 on the upper part of the cutting unit 2 to rise. Since the cutting unit 2 is set on the support 4, the cutting unit 2 will rise synchronously with the support 4. When the cutting unit 2 rises to the highest position, the cleaning unit 8 cleans the circular saw 21 in the cutting unit 2. At this time, the second rotary driver 82 drives the cleaning roller 81 to rotate. The cleaning roller 81 is provided with copper wire on the outside. When the cleaning roller 81 rotates, it drives the copper wire to rotate, thereby removing the residue at the blade head 211 of the circular saw 21.

[0070] During cleaning, the circular saw 21 rotates slowly, and the cutting unit 2 performs a self-cleaning process immediately after each use. This reduces the amount of manual cleaning and prevents the accumulation of chips at the cutter head 211 of the circular saw 21, thereby extending the service life of the circular saw 21 and improving the cutting quality of the circular saw 21 on die-cast parts.

[0071] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A trimming device for automotive aluminum alloy die castings, comprising a working platform (1), a trimming unit (2), and a limiting and pushing unit (3). characterized in that The cutting edge unit (2) includes: A circular saw (21) is rotatably mounted on the upper part of the working platform (1), and multiple cutter heads (211) are evenly distributed around the axis of the circular saw (21) on its outer periphery. The first guide groove (22) is provided in multiple and divided into two groups. The number of the first guide grooves (22) in each group is the same as that of the cutter head (211). The two groups are respectively set at both ends of the circular saw (21). All the first guide grooves (22) in each group are radially distributed around the center of the circular saw (21). Two collection channels (23) are provided and are respectively connected to the two sets of the guide groups. The two collection channels (23) are respectively located at the center of both ends of the circular saw (21). A water supply shell (24) is located on the side of the collection tank (23) away from the circular saw (21) and communicates with the collection tank (23). The water supply shell (24) is externally connected to a lubricating fluid supply system.

2. The apparatus according to claim 1, wherein The cutting edge unit (2) also includes: The cover plate (25) is circular and there are two of them. The two cover plates (25) are coaxially arranged at both ends of the circular saw (21). The cover plate (25) and the first guide groove (22) form a sealed flow channel.

3. The apparatus according to claim 2, wherein A water inlet (251) is provided on the cover plate (25) along the axis of the cover plate (25), and one end of the water supply shell (24) is rotatably connected to the water inlet (251).

4. The apparatus according to claim 3, wherein The cutting edge unit (2) also includes: Two frustum components (26) are provided and are respectively located at both ends of the circular saw (21). The frustum components (26) are coaxially fixedly connected to the circular saw (21). The smaller diameter end of the frustum component (26) is away from the circular saw (21). The frustum component (26) and the cover plate (25) together form the collection groove (23).

5. The apparatus for trimming an automobile aluminum alloy die casting according to claim 2, wherein The cutting edge unit (2) also includes: The second guide groove (27) corresponds to and is connected to the sealed flow channel. The second guide groove (27) extends to the root side of the cutter head (211). The third guide groove (28) corresponds one-to-one with the cutter head (211) and is opened on the circular saw (21). The third guide groove (28) connects the two second guide grooves (27) on both sides of the same cutter head (211) and extends to the root of the cutter head (211).

6. The apparatus according to claim 5, wherein A guide block (252) is provided inside the sealed flow channel near the end of the cutter head (211). The guide block (252) is fixedly disposed at the end of the cover plate (25) facing the circular saw (21). The end face of the guide block (252) facing the circular saw (21) is inclined from the cover plate (25) to the end face of the circular saw (21) along the flow direction of the lubricating fluid in the first guide groove (22).

7. The apparatus according to claim 1, wherein Multiple cutting units (2) are arranged in the horizontal direction. In the arrangement direction of the cutting units (2), the vertical distance from the bottom of the circular saw (21) in the cutting unit (2) to the working platform (1) decreases linearly from the feed end of the cutting device.

8. The apparatus according to claim 1, wherein The upper part of the circular saw (21) is fitted with a splash guard (6).

9. The apparatus according to claim 7, wherein Each of the cutting edge units (2) is vertically provided with a linear driver (7) at its upper part. The linear driver (7) is used to drive the cutting edge unit (2) to rise and fall. When the cutting edge unit (2) rises and falls, it forms a lifting path. A cleaning unit (8) for cleaning the circular saw (21) is provided on one side of the highest point of the lifting path.

10. The apparatus according to claim 9, wherein The cleaning unit (8) includes: Cleaning roller (81) is rotatably mounted on one side of the lifting path; A second rotary drive (82) is disposed at the end of the cleaning roller (81) for driving the cleaning roller (81) to rotate.

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