Numerical control machine tool for burr treatment on surface of metal accessory of agricultural machinery

Abstract

The application relates to the technical field of numerical control machine tools, and discloses a numerical control machine tool for treating surface burrs of metal parts of agricultural machinery; the numerical control machine tool is provided with an auxiliary grinding disc; when the auxiliary grinding disc is located at the edge position of the metal part, the auxiliary grinding disc can be inclined to the edge to treat the edge burrs of the metal part, so that the treatment of the burrs of the metal part is comprehensive; meanwhile, the edge of the auxiliary grinding disc is provided with a cleaning scraper; when the auxiliary grinding disc is in a horizontal state, the cleaning scraper scrapes and conveys the stains inside the annular isolation plate to a debris dust collection groove; when the auxiliary grinding disc is in an inclined position, the dust collection groove baffle in the lower area of the inclined position is opened to discharge the stains in the debris dust collection groove, so that the stains are collected and transferred, the stains are prevented from damaging the metal parts of the machine during the grinding process, and the product quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and in particular to a CNC machine tool for deburring the surface of metal parts for agricultural machinery. Background Technology

[0002] CNC machine tools, also known as computer numerical control machine tools, are high-precision machining equipment that uses computer programs to automatically control the movement and machining process of machine tools. They have changed the traditional machine tool model that relies on manual operation, and can achieve precise, efficient, and batch processing of parts through preset digital instructions. They are the core equipment of modern manufacturing industry.

[0003] Chinese Patent Publication No. CN221290607U discloses a burr removal mechanism for metal casting processing. This utility model relates to the field of metal casting processing technology, and more particularly to a burr removal mechanism for metal casting processing. It includes a three-axis machine tool with an angle adjustment mechanism. A processing table is fixedly mounted on the three-axis machine tool, and a positioning plate is fixedly mounted on the top of the processing table. A first slide rail is fixed inside the processing table, and a first limiting plate is slidably mounted on the first slide rail. A first electric push rod is mounted on the first slide rail, and the output end of the first electric push rod is connected to the first limiting plate. This invention solves the problem that when cleaning burrs from some small and thin metal castings, the lack of an estimation mechanism for the metal casting causes the metal casting to shift position during the deburring process of the grinding brush, thus damaging the casting surface and affecting processing accuracy.

[0004] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: When using existing CNC machine tools for surface burr removal of agricultural machinery metal parts, most of them adopt a planar transition method to clean the burrs on the surface of the machinery metal parts. However, the burrs of machinery metal parts are mainly concentrated on the surface and edge areas. This method may result in the edge burrs not being cleaned properly, leading to insufficient burr removal and thus affecting product quality. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantage of not being able to clean the burrs on the edges of metal parts. To this end, we propose a CNC machine tool for surface burr treatment of metal parts for agricultural machinery.

[0006] To achieve the above objectives, this application adopts the following technical solution: A CNC machine tool for deburring the surface of metal parts for agricultural machinery, comprising: a CNC machine tool body for deburring metal parts, a drive mechanism internally connected to the machine tool body, a mounting plate fixedly connected to the bottom of the drive mechanism, a main grinding plate disposed at the bottom of the mounting plate, a grinding device fixedly connected to the side of the mounting plate, a connecting plate fixedly connected to the bottom of the grinding device, a bushing fixedly connected to the bottom of the connecting plate, a universal joint internally engaged with the bushing, a connecting piece fixedly connected to the bottom of the universal joint, a return spring fixedly connected to the side of the connecting piece, and a ring fixedly connected to the bottom of the connecting piece. The annular isolation plate has an auxiliary grinding disc rotatably connected inside. The outer wall of the auxiliary grinding disc has a guide groove. A cleaning scraper is fixedly connected to the side of the auxiliary grinding disc. A debris and dust collection trough is opened on the side of the annular isolation plate. A dust collection trough baffle is tightly fitted to the outer wall of the debris and dust collection trough. A baffle shaft is movably connected to the top of the dust collection trough baffle. A first shaft is movably connected to the outer wall of the dust collection trough baffle. A telescopic inner rod is fixedly connected to the top of the first shaft. A limit pin is fixedly connected to the top of the telescopic inner rod. A device spring is fixedly connected to the top of the limit pin. A telescopic outer shell is engaged with the outer wall of the device spring. A second shaft is movably connected to the top of the telescopic outer shell. A fixing block is fixedly connected to the top of the second shaft.

[0007] Preferably, the grinding device has ten points at equal angles to the vertical centerline of the main grinding disc, and the grinding device is used to control the operation of the auxiliary grinding disc.

[0008] Preferably, the return spring and the connecting plate are fixedly connected, and the return spring has six springs arranged at equal angles about the vertical central axis of the connecting plate.

[0009] Preferably, the guide groove is arc-shaped, and there are six guide grooves arranged at equal angles to the vertical central axis of the auxiliary grinding disc.

[0010] Preferably, the cleaning scraper is triangular in shape and is used to scrape off dirt from the inner wall of the annular partition plate.

[0011] Preferably, the debris collection trough is an inclined pipe-shaped arrangement, used to collect the dirt scraped off by the cleaning scraper.

[0012] Preferably, the baffle shaft and the annular isolation plate are fixedly connected, and the baffle shaft is provided with six equal angles about the vertical central axis of the annular isolation plate.

[0013] Preferably, the inner wall of the dust collection trough baffle is arc-shaped, and the fitting part of the dust collection trough baffle and the annular isolation plate has the same shape.

[0014] Preferably, the limiting pin slides on the inner wall of the telescopic housing, and the device spring acts as a buffer.

[0015] Preferably, the fixing block and the connecting plate are fixedly connected, and the fixing block has six angles set at the same angles about the vertical centerline of the connecting plate.

[0016] The technical effects and advantages of this invention are as follows:

[0017] In this invention, an auxiliary grinding disc is provided. When the auxiliary grinding disc is located at the edge of the metal part, it can be tilted to fit the edge, thus removing burrs from the metal part and ensuring comprehensive burr removal. Simultaneously, a cleaning scraper is provided on the edge of the auxiliary grinding disc. When the auxiliary grinding disc is horizontal, the cleaning scraper removes dirt from inside the annular isolation plate and transports it to the debris collection trough. When the auxiliary grinding disc is tilted, the baffle in the lower part of the tilted area opens, discharging dirt from the debris collection trough. This achieves the collection and transfer of dirt, effectively preventing damage to the mechanical metal parts during grinding and ensuring product quality. Attached Figure Description

[0018] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0019] Figure 1 This is a front view of the CNC machine tool for surface deburring of metal parts for agricultural machinery according to the present invention;

[0020] Figure 2 This is an enlarged structural schematic diagram of the mounting disk portion of the present invention;

[0021] Figure 3 This is an enlarged structural schematic diagram of the polishing device part of the present invention;

[0022] Figure 4 This is an enlarged structural schematic diagram of the universal joint portion of the present invention;

[0023] Figure 5 This is an exploded structural diagram of the universal joint portion of the present invention;

[0024] Figure 6 This is an enlarged structural schematic diagram of the auxiliary grinding disc part of the present invention;

[0025] Figure 7 This is an enlarged structural schematic diagram of the telescopic outer shell portion of the present invention;

[0026] Figure 8 This is a cross-sectional structural diagram of the telescopic outer shell portion of the present invention.

[0027] Legend: 1. CNC machine tool body for deburring metal parts; 2. Mounting plate; 3. Grinding device; 4. Connecting plate; 5. Bushing; 6. Universal joint; 7. Connecting piece; 8. Return spring; 9. Annular isolation plate; 10. Auxiliary grinding disc; 11. Guide channel; 12. Cleaning scraper; 13. Debris collection trough; 14. Dust collection trough baffle; 15. Baffle shaft; 16. No. 1 shaft; 17. Telescopic inner rod; 18. Limit pin; 19. Device spring; 20. Telescopic outer shell; 21. No. 2 shaft; 22. Fixing block; 23. Main grinding disc; 24. Drive mechanism. Detailed Implementation

[0028] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0029] According to one embodiment of the present invention, Figures 1 to 8 As shown.

[0030] In the current automated production process of agricultural machinery metal parts, CNC machine tools are used as the core processing equipment for surface deburring. The mainstream deburring method is still planar transition grinding. A CNC program drives a grinding disc to perform uniform reciprocating or rotating motions along the planar area of ​​the part. The burrs generated by previous processing such as cutting, stamping, and welding are removed through frictional contact between the grinding disc and the metal surface. However, the distribution of burrs on agricultural machinery metal parts is not limited to the planar area; they are mainly concentrated in the planar and edge areas. CNC machine tools are usually set with fixed grinding paths and pressures. Burrs in edge areas often require localized, intensified grinding. Flat surface grinding with fixed parameters is difficult to achieve simultaneously; either insufficient pressure fails to cut off the root of the burrs, or incomplete path coverage results in blind spots at the edges. While this method effectively removes burrs from flat areas, a significant amount of burrs remain in the edge areas, ultimately leading to an incomplete overall cleaning effect. The residual edge burrs have a particularly significant impact on the product quality of agricultural machinery parts. To solve this problem, this invention incorporates the following design on a CNC machine tool for surface burr treatment of agricultural machinery metal parts:

[0031] A CNC machine tool for deburring the surface of metal parts for agricultural machinery includes: a machine body 1 specifically designed for metal parts on agricultural machinery. The machine body 1 uses a computer program to control a cutting tool or grinding mechanism to automatically remove residual burrs from the surface of the parts after production, ensuring both precision and surface quality. A drive mechanism 24 is internally connected to the machine body 1. The drive mechanism 24 is the core device in the machine that converts energy into mechanical motion; it acts as a bridge between power transmission and motion control. One end connects to an energy source, and the other end connects to the actuator of the equipment, ultimately driving the actuator to achieve a preset motion. The speed, direction, force, and precision of the motion can be controlled. A mounting plate 2 is fixedly connected to the bottom of the drive mechanism 24. A main grinding plate 23 is located at the bottom of the mounting plate 2. A grinding device 3 is fixedly connected to the side of the mounting plate 2. The grinding device 3 is used to grind and polish the surface of a workpiece to remove surface defects and improve surface quality. A connecting disc 4 is fixedly connected. A bushing 5 is fixedly connected to the bottom of the connecting disc 4. A universal joint 6 is engaged inside the bushing 5. A connecting piece 7 is fixedly connected to the bottom of the universal joint 6. A return spring 8 is fixedly connected to the side of the connecting piece 7. An annular isolation plate 9 is fixedly connected to the bottom of the connecting piece 7. An auxiliary grinding disc 10 is rotatably connected inside the annular isolation plate 9. A guide groove 11 is formed on the outer wall of the auxiliary grinding disc 10. A cleaning scraper 12 is fixedly connected to the side of the auxiliary grinding disc 10. A debris and dust collection groove 13 is formed on the side of the annular isolation plate 9. A dust collection trough baffle 14 is tightly fitted to the outer wall. A baffle shaft 15 is movably connected to the top of the dust collection trough baffle 14. A first shaft 16 is movably connected to the outer wall of the dust collection trough baffle 14. A telescopic inner rod 17 is fixedly connected to the top of the first shaft 16. A limit pin 18 is fixedly connected to the top of the telescopic inner rod 17. A device spring 19 is fixedly connected to the top of the limit pin 18. A telescopic outer shell 20 is engaged with the outer wall of the device spring 19. A second shaft 21 is movably connected to the top of the telescopic outer shell 20. A fixing block 22 is fixedly connected to the top of the second shaft 21.

[0032] When the device is in use, the metal parts of agricultural machinery are fixed on the grinding platform inside the body 1 of the CNC machine tool for deburring metal parts. Then, the drive mechanism 24 is started to control the operation of the device. During the grinding process, the main grinding disc 23 deburrs the surface of the metal parts. At the same time, the grinding device 3 controls the operation of the auxiliary grinding disc 10. When grinding the flat area, the auxiliary grinding disc 10 assists in grinding the area around the main grinding disc 23. The auxiliary grinding disc 10 discharges the grinding debris through the guide groove 11 and stores it in the annular isolation plate 9. With the rotation of the cleaning scraper 12, the cleaning scraper 12 scrapes away the debris and dirt inside the annular isolation plate 9. The inclined cleaning scraper 12 can push the debris and dirt into the debris and dust collection groove 13 to achieve centralized transfer of debris and dirt. When the auxiliary grinding disc 10 is at the edge When in position, the auxiliary grinding disc 10 is in contact with the edge of the metal parts of the agricultural machinery. The universal shaft 6 tilts inside the bushing 5, and the corresponding return spring 8 extends and retracts to achieve adaptive adjustment. When the annular isolation plate 9 tilts, the dust collection groove baffle 14 in the downward tilting area of ​​the annular isolation plate 9 is pulled by the telescopic inner rod 17. The dust collection groove baffle 14 opens around the baffle shaft 15, and the debris dust collection groove 13 is in a flow state, allowing the debris and dirt inside to be discharged. The dust collection groove baffle 14 in the upward tilting area of ​​the annular isolation plate 9 drives the telescopic inner rod 17 to move upward. At this time, the device spring 19 begins to contract, strengthening the closing effect of the dust collection groove baffle 14 and preventing debris and dirt from being discharged to the metal parts. The first rotating shaft 16 and the second rotating shaft 21 are used to cooperate with the tilting of the annular isolation plate 9 to ensure the stable operation of the device.

[0033] An auxiliary grinding disc 10 is provided. When the auxiliary grinding disc 10 is at the edge of the metal part, it can tilt to fit the edge, thus removing burrs and ensuring comprehensive burr removal. Simultaneously, a cleaning scraper 12 is provided on the edge of the auxiliary grinding disc 10. When the auxiliary grinding disc 10 is horizontal, it can assist in grinding the area surrounding the main grinding disc 23, enhancing the burr removal effect. The cleaning scraper 12 also scrapes away dirt from inside the annular isolation plate 9 and transports it to the debris collection trough 13. When the auxiliary grinding disc 10 is tilted, the baffle 14 in the lower part of the tilted area opens, discharging dirt from the debris collection trough 13, thus collecting and transferring dirt and effectively preventing damage to the mechanical metal parts during grinding. When the auxiliary grinding disc 10 moves to the edge of the metal part, it tilts and fits tightly to the edge, unlike traditional flat grinding discs which cannot penetrate deep into edge gaps. The problem is that it can directly act on the edge burrs to achieve fine grinding and avoid edge burr residue. In the horizontal state, the auxiliary grinding disc 10 can assist in grinding the area around the main grinding disc 23, forming a collaborative mode in which the main grinding disc 23 attacks the large area of ​​the plane and the auxiliary grinding disc 10 supplements the grinding. In the horizontal state, the cleaning scraper 12 can scrape the dirt inside the annular isolation plate 9 in real time and concentrate it into the debris collection trough 13, avoiding the accumulation of dirt in the grinding area. In traditional equipment, scattered debris will repeatedly rub the surface of the parts with the rotation of the grinding disc, resulting in fine scratches on the agricultural machinery parts. When the auxiliary grinding disc 10 is tilted, the dust collection trough baffle 14 automatically opens to discharge the debris, and the dirt can be transferred without manual intervention. If the debris accumulates in the grinding area for a long time, it may not only get stuck in the rotation mechanism of the main grinding disc 23 or the auxiliary grinding disc 10, but may also form indentations on the surface of the parts. By timely discharge of debris, it is not only avoided that the debris interferes with the movement accuracy of the grinding disc, but also prevents the parts from being deformed or crushed by the debris, which is conducive to ensuring the quality of the product.

[0034] Existing CNC machine tools for deburring the surface of metal parts in agricultural machinery mostly employ a single-grinding disc design. This single-grinding disc uses a planar grinding trajectory, processing only a localized area of ​​the part at a time. This results in low grinding efficiency, making it unsuitable for the mass production needs of agricultural machinery parts. It also leaves many blind spots, failing to achieve full coverage of the workpiece. This grinding method requires manual quality inspection, significantly impacting work efficiency. The limitations of the single-grinding disc method directly lead to reliance on manual labor in subsequent quality inspection processes. Because a single-grinding disc cannot guarantee complete burr removal, and in batch processing, some parts may meet the grinding standards while others have residual blind spots, requiring dedicated personnel to inspect each part. After grinding, the parts undergo full-area quality inspection. Inspectors must use magnifying glasses or specialized testing tools to examine each part's surface, edges, and openings to check for burrs, surface scratches, and other defects. If burrs are found, the parts must be returned to the CNC machine tool for secondary grinding. This grinding process requires repeated positioning and parameter adjustments, further increasing labor costs. Some parts with dimensional deviations due to secondary grinding are even scrapped, resulting in material waste. This process significantly reduces overall production efficiency and increases labor costs and product defect rates. To address this issue, this invention incorporates the following design on a CNC machine tool for deburring the surface of agricultural machinery metal parts:

[0035] The grinding device 3 has ten grinding points at equal angles to the vertical center axis of the main grinding disc 23. The grinding device 3 controls the operation of the auxiliary grinding disc 10. The return spring 8 is fixedly connected to the connecting disc 4. Six return springs 8 are arranged at equal angles to the vertical center axis of the connecting disc 4. The guide channel 11 is arc-shaped, with six guide channels arranged at equal angles to the vertical center axis of the auxiliary grinding disc 10. The cleaning scraper 12 is triangular and is used to scrape away dirt from the inner wall of the annular isolation plate 9. The debris collection trough 13 is an inclined pipe-shaped structure. 13 is used to collect the dirt scraped off by the cleaning scraper 12. The baffle shaft 15 is fixedly connected to the annular isolation plate 9. The baffle shaft 15 has six equal angles about the vertical center axis of the annular isolation plate 9. The inner wall of the dust collection trough baffle 14 is arc-shaped. The mating part of the dust collection trough baffle 14 and the annular isolation plate 9 has the same shape. The limit pin 18 slides on the inner wall of the telescopic outer shell 20. The device spring 19 plays a buffering role. The fixing block 22 is fixedly connected to the connecting plate 4. The fixing block 22 has six equal angles about the vertical center axis of the connecting plate 4.

[0036] The design of the main grinding disc 23 in conjunction with the auxiliary grinding disc 10 covers both the flat surface and the edges. The main grinding disc 23 focuses on processing the large flat surfaces of the parts, efficiently removing granular burrs. The auxiliary grinding disc 10 specifically processes the edges and corners. The auxiliary grinding disc 10 can be flexibly tilted according to the edge shape. The auxiliary grinding disc 10 can undertake the fine grinding tasks of the main grinding disc 23. After the main grinding disc 23 completes the rough grinding, the auxiliary grinding disc immediately follows up with fine polishing without changing the grinding tools, improving the grinding surface finish. With its own compatible fine polishing grinding tools, the auxiliary grinding disc 10 simultaneously performs fine finishing on the transition areas of the flat edges, corners, and the periphery of holes based on the grinding trajectory of the main grinding disc 23. This instantaneous connection not only avoids the waiting time for changing grinding tools, but also prevents the workpiece from being contaminated with debris or oxidized during the grinding tool change interval, ensuring a uniform surface finish after fine polishing. At the same time, it reduces the load pressure on the main grinding disc 23, extends its service life, and truly achieves the dual auxiliary value of efficient grinding and fine finishing.

[0037] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A CNC machine tool for deburring the surface of metal parts for agricultural machinery, characterized in that, include: A CNC machine tool body for deburring metal parts includes a drive mechanism internally connected to the machine body. A mounting plate is fixedly connected to the bottom of the drive mechanism. A main grinding disc is located at the bottom of the mounting plate. A grinding device is fixedly connected to the side of the mounting plate. A connecting plate is fixedly connected to the bottom of the grinding device. A bushing is fixedly connected to the bottom of the connecting plate. A universal joint is internally engaged with the bushing. A connecting piece is fixedly connected to the bottom of the universal joint. A return spring is fixedly connected to the side of the connecting piece. An annular isolation plate is fixedly connected to the bottom of the connecting piece. An auxiliary grinding disc is rotatably connected inside the annular isolation plate. The outer wall of the grinding disc has a guide groove. A cleaning scraper is fixedly connected to the side of the auxiliary grinding disc. A debris and dust collection groove is provided on the side of the annular isolation plate. A dust collection groove baffle is tightly fitted to the outer wall of the debris and dust collection groove. A baffle rotating shaft is movably connected to the top of the dust collection groove baffle. A first rotating shaft is movably connected to the outer wall of the dust collection groove baffle. A telescopic inner rod is fixedly connected to the top of the first rotating shaft. A limit pin is fixedly connected to the top of the telescopic inner rod. A device spring is fixedly connected to the top of the limit pin. A telescopic outer shell is engaged with the outer wall of the device spring. A second rotating shaft is movably connected to the top of the telescopic outer shell. A fixing block is fixedly connected to the top of the second rotating shaft.

2. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The grinding device has ten points set at equal angles to the vertical center axis of the main grinding disc, and the grinding device is used to control the operation of the auxiliary grinding disc.

3. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The reset spring is fixedly connected to the connecting plate, and six reset springs are arranged at equal angles about the vertical central axis of the connecting plate.

4. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The guide groove is arc-shaped, and there are six guide grooves arranged at equal angles to the vertical central axis of the auxiliary grinding disc.

5. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The cleaning scraper is triangular in shape and is used to scrape off dirt from the inner wall of the annular partition plate.

6. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The debris collection trough is an inclined pipe-shaped structure used to collect the dirt scraped off by the cleaning scraper.

7. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The baffle shaft is fixedly connected to the annular isolation plate, and the baffle shaft has six equidistant points about the vertical central axis of the annular isolation plate.

8. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The inner wall of the dust collection trough baffle is arc-shaped, and the fitting part of the dust collection trough baffle and the annular isolation plate has the same shape.

9. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The limiting pin slides on the inner wall of the telescopic housing, and the spring in the device acts as a buffer.

10. The CNC machine tool for surface deburring of agricultural machinery metal parts according to claim 1, characterized in that: The fixing block and the connecting plate are fixedly connected, and the fixing block has six parts arranged at equal angles about the vertical centerline of the connecting plate.

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