Numerically-controlled machine tool for processing burrs on surfaces of metal accessories of agricultural machinery

Abstract

The invention relates to the technical field of numerical control machine tools, and discloses a numerical control machine tool for surface burr treatment of agricultural machinery metal accessories. The device is provided with the auxiliary millstone, when the auxiliary millstone is located at the edge position of a metal accessory, the auxiliary millstone can be attached to the edge to incline, burrs on the edge of the metal accessory are treated, it is guaranteed that the device comprehensively treats the burrs of the metal accessory, meanwhile, a cleaning scraper is arranged on the edge of the auxiliary millstone, and when the auxiliary millstone is in a horizontal state, the auxiliary millstone is cleaned. When the auxiliary millstone is located at the inclined position, the dust collection groove baffle located in the lower area of the inclined position is opened at the moment, the stains in the scrap dust collection groove are discharged, and collection and transfer of the stains are achieved; damage to the mechanical metal parts caused by the stain particles in the polishing process is effectively avoided, and the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool for processing surface burrs of agricultural machinery metal parts. BACKGROUND

[0002] A numerical control machine tool, full name computer numerical control machine tool, is a high-precision machining equipment that automatically controls the movement and processing of machine tools through computer programs, which changes the traditional mode of manual operation of machine tools and realizes precise, efficient and batch processing of parts through preset digital instructions. It is the core equipment of modern manufacturing industry.

[0003] In the Chinese patent No. CN221290607U, a burr processing mechanism for metal casting machining is disclosed. The utility model relates to the technical field of metal casting machining, especially a burr processing mechanism for metal casting machining, which comprises a three-axis machine tool, an angle adjusting mechanism is arranged on the three-axis machine tool, a processing table is fixedly installed on the three-axis machine tool, a positioning plate is fixedly arranged on the top of the processing table, a first sliding rail is fixedly arranged in the processing table, a first limiting plate is slidably installed on the first sliding rail, a first electric push rod is installed on the first sliding rail, and the output end of the first electric push rod is connected with the first limiting plate. The problem of the lack of an estimation mechanism for metal castings during burr cleaning of some small and thin metal castings, which causes the metal castings to shift position during the rotation of the grinding brush, thereby damaging the surface of the castings and affecting the processing precision, is solved.

[0004] In view of the above and existing related technologies, the inventors believe that the following defects often exist: the existing numerical control machine tool for processing surface burrs of agricultural machinery metal parts mostly uses a flat transition method to clean the burrs on the surface of the metal parts. However, the burrs on the metal parts are mainly concentrated on the surface and edge area, which may result in incomplete edge burr processing, leading to incomplete burr cleaning and affecting product quality. SUMMARY

[0005] The technical problem to be solved by the present application is the incomplete edge burr cleaning in the prior art. Therefore, we propose a numerical control machine tool for processing surface burrs of agricultural machinery metal parts.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is as follows: a numerical control machine tool for burr treatment of metal parts of agricultural machinery, comprising: a metal part burr treatment numerical control machine tool body, a driving mechanism movably connected inside the metal part burr treatment numerical control machine tool body, a mounting disc fixedly connected to the bottom of the driving mechanism, a main grinding disc provided at the bottom of the mounting disc, a polishing device fixedly connected to the side of the mounting disc, a connecting disc fixedly connected to the bottom of the polishing device, a shaft sleeve fixedly connected to the bottom of the connecting disc, a universal shaft snap-connected inside the shaft sleeve, a connecting piece fixedly connected to the bottom of the universal shaft, a return spring fixedly connected to the side of the connecting piece, an annular isolation plate fixedly connected to the bottom of the connecting piece, an auxiliary grinding disc rotatably connected inside the annular isolation plate, a flow guide groove formed in the outer wall of the auxiliary grinding disc, a cleaning scraper fixedly connected to the side of the auxiliary grinding disc, a debris dust collection groove formed in the side of the annular isolation plate, a dust collection groove baffle closely attached to the outer wall of the debris dust collection groove, a baffle shaft movably connected to the top of the dust collection groove baffle, a first shaft movably connected to the outer wall of the dust collection groove baffle, a telescopic inner rod fixedly connected to the top of the first shaft, a limiting pin fixedly connected to the top of the telescopic inner rod, a device spring fixedly connected to the top of the limiting pin, a telescopic outer shell snap-connected to the outer wall of the device spring, a second shaft movably connected to the top of the telescopic outer shell, and a fixed block fixedly connected to the top of the second shaft.

[0007] Preferably, the polishing device is arranged at equal angles about the vertical central axis of the main grinding disc, and the polishing device is used to control the operation of the auxiliary grinding disc.

[0008] Preferably, the return spring is fixedly connected between the connecting disc, and the return spring is arranged at equal angles about the vertical central axis of the connecting disc.

[0009] Preferably, the flow guide groove is arranged in an arc shape, and the flow guide groove is arranged at equal angles about the vertical central axis of the auxiliary grinding disc.

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

[0011] Preferably, the debris dust collection groove is arranged in an inclined pipeline shape, and the debris dust collection groove is used to collect stains scraped off by the cleaning scraper.

[0012] Preferably, the baffle shaft is fixedly connected between the annular isolation plate, and the baffle shaft is arranged at equal angles about the vertical central axis of the annular isolation plate.

[0013] Preferably, the inner wall of the dust collection groove baffle is arranged in an arc shape, and the dust collection groove baffle is attached to the annular isolation plate in the same shape.

[0014] Preferably, the limiting pin slides in the inner wall of the telescopic outer shell, and the device spring plays a buffering role.

[0015] Preferably, the fixed blocks are fixedly connected with the connecting plates, and the fixed blocks are arranged at six equal angles about the vertical central axis of the connecting plates.

[0016] Technical effects and advantages of the present application: In the present application, the auxiliary grinding disc can be inclined to fit the edge when it is at the edge position of the metal fitting, so as to process the burrs on the edge of the metal fitting and ensure comprehensive burr processing of the device. Meanwhile, the edge of the auxiliary grinding disc is provided with a cleaning scraper, which can scrape and transport the stains inside the annular isolation plate to the debris dust collection groove when the auxiliary grinding disc is in a horizontal state. 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 as to collect and transfer the stains and effectively avoid damage to the mechanical metal fitting during the grinding process, which is conducive to ensuring the quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0017] The disclosed content of the present application is explained with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 It is a front view structural schematic diagram of the numerical control machine tool for processing the surface burrs of the metal fitting of the agricultural machinery of the present application; Figure 2 It is an enlarged structural schematic diagram of the mounting disc part of the present application; Figure 3 It is an enlarged structural schematic diagram of the polishing device part of the present application; Figure 4 It is an enlarged structural schematic diagram of the universal shaft part of the present application; Figure 5 It is an exploded structural schematic diagram of the universal shaft part of the present application; Figure 6 It is an enlarged structural schematic diagram of the auxiliary grinding disc part of the present application; Figure 7 It is an enlarged structural schematic diagram of the telescopic shell part of the present application; Figure 8 It is a cross-sectional structural schematic diagram of the telescopic shell part of the present application.

[0018] Legend: 1, metal parts burr processing CNC machine tool body; 2, mounting disc; 3, polishing device; 4, connecting disc; 5, shaft sleeve; 6, universal shaft; 7, connecting piece; 8, return spring; 9, annular isolation plate; 10, auxiliary grinding disc; 11, flow guide groove; 12, cleaning scraper; 13, debris dust collection groove; 14, dust collection groove baffle; 15, baffle shaft; 16, No. 1 rotating shaft; 17, telescopic inner rod; 18, limit pin; 19, device spring; 20, telescopic outer shell; 21, No. 2 rotating shaft; 22, fixed block; 23, main grinding disc; 24, driving mechanism. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical scheme of the present application, those skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary description of the technical scheme of the present application, and should not be regarded as the whole or as the limitation or restriction of the technical scheme of the present application.

[0020] According to an embodiment of the present application Figures 1 to 8 is shown.

[0021] In the current automatic production process of agricultural machinery metal parts, the surface burr processing CNC machine tool as the core processing equipment, the mainstream burr cleaning method is still mainly plane transition polishing, through the numerical control program driving grinding disc, along the plane area of the parts uniform speed reciprocating or rotating movement, relying on the friction contact between the grinding disc and the metal surface, removing the burr on the plane due to cutting, stamping, welding and other previous processing, however, the burr distribution of agricultural machinery metal parts is not limited to the plane area, mainly concentrated in the plane area and the edge area, the numerical control machine tool usually sets fixed polishing path and pressure, and the edge area burr often needs local strengthening polishing, and the plane transition polishing under fixed parameters is difficult to take into account, either because of insufficient pressure cannot cut off the root of the edge burr, or because the path is not fully covered, resulting in the edge position becoming a cleaning blind area, this way can make the burr on the plane area be effectively removed, but the burr on the edge area still remains, ultimately resulting in the overall cleaning effect not comprehensive enough, and the remaining of the edge burr has a significant impact on the product quality of agricultural machinery parts, in order to solve this problem, the present application makes the following design on the surface burr processing CNC machine tool of agricultural machinery metal parts: The utility model provides a numerical control machine tool for the surface burr treatment of agricultural machinery metal fittings, including: metal fittings burr treatment numerical control machine tool body 1, metal fittings burr treatment numerical control machine tool body 1 is specially designed for the metal fittings on agricultural machinery, and the numerical control machine tool for the surface burr treatment of agricultural machinery metal fittings is removed the burr of the surface of the fittings after production automatically through the computer program control tool or polishing mechanism, guarantees the precision and surface quality of fittings, driving mechanism 24 is rotatably connected in the inside of metal fittings burr treatment numerical control machine tool body 1, and driving mechanism 24 is the core device of energy conversion into mechanical movement in mechanical equipment, and its essence is the bridge of power transmission and motion control, connects energy source at one end, and connects the executing component of equipment at the other end, finally drives the executing component to realize the preset motion, and can control the speed, direction, strength and accuracy of motion, the bottom of driving mechanism 24 is fixedly connected with mounting disc 2, the bottom of mounting disc 2 is provided with main grinding disc 23, the side of mounting disc 2 is fixedly connected with polishing device 3, polishing device 3 is a kind of equipment for grinding, polishing and other processing to the surface of workpiece to remove surface defects and improve surface quality, the bottom of polishing device 3 is fixedly connected with connecting disc 4, the bottom of connecting disc 4 is fixedly connected with shaft sleeve 5, the inside of shaft sleeve 5 is clampedly connected with universal shaft 6, the bottom of universal shaft 6 is fixedly connected with connecting piece 7, the side of connecting piece 7 is fixedly connected with return spring 8, the bottom of connecting piece 7 is fixedly connected with annular isolation plate 9, the inside of annular isolation plate 9 is rotatably connected with auxiliary grinding disc 10, the outer wall of auxiliary grinding disc 10 is provided with flow guide groove 11, the side of auxiliary grinding disc 10 is fixedly connected with cleaning scraper 12, the side of annular isolation plate 9 is provided with scrap collecting groove 13, the outer wall of scrap collecting groove 13 is tightly attached with dust collecting groove baffle 14, the top of dust collecting groove baffle 14 is movably connected with baffle rotating shaft 15, the outer wall of dust collecting groove baffle 14 is movably connected with No.

[0022] The device is in use, the agricultural machinery metal fittings fixed in the metal fittings burr processing numerical control machine tool body 1 inside the polishing platform, and then start the drive mechanism 24, control device operation, in the polishing process, the main grinding disc 23 of metal fittings for surface burr processing, at the same time polishing device 3 control auxiliary grinding disc 10 operation, when the polishing of the plane area, auxiliary grinding disc 10 around the main grinding disc 23 area auxiliary grinding, auxiliary grinding disc 10 will be generated by polishing debris through the flow groove 11 discharge, stored in the annular isolation plate 9, with the rotation of the cleaning scraper 12, the cleaning scraper 12 will be on the inside of the annular isolation plate 9 of the debris stains scraping, the cleaning scraper 12 can be designed to push the debris stains to the debris dust collection tank 13, realize the centralized transfer of the debris stains, when the auxiliary grinding disc 10 is in the edge position, the auxiliary grinding disc 10 is attached to the edge of the agricultural machinery metal fittings, the universal shaft 6 in the shaft sleeve 5 inside the tilt, the corresponding reset spring 8 stretch, realize the self-adaptive adjustment, when the annular isolation plate 9 is inclined, the dust collection tank baffle 14 in the stretch of the inner rod 17 under the pull of the annular isolation plate 9 inclined to the downward area, the dust collection tank baffle 14 around the baffle shaft 15 open, at this time the debris dust collection tank 13 is in the flow state, the inside of the debris stains can be discharged, the annular isolation plate 9 inclined to the upward area of the dust collection tank baffle 14 drive stretch inner rod 17 up, at this time the device spring 19 begins to shrink, strengthen the dust collection tank baffle 14 closing effect, avoid the discharge of the debris stains to the metal fittings position, a shaft 16, two shaft 21 for the cooperation of the annular isolation plate 9 tilt, ensure the stability of the device operation.

[0023] 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.

[0024] The existing numerical control machine tool for processing surface burrs of agricultural machinery metal parts mostly adopts single grinding disc design to process the burrs on the surface of the metal parts during use. The single grinding disc adopts a planar grinding track, and the single grinding disc can only process one local area of the part at a time, which has low grinding efficiency and cannot adapt to the batch production demand of agricultural machinery parts. The grinding blind area is large, and the whole area of the workpiece cannot be covered. This grinding mode needs manual quality inspection, which greatly affects the work efficiency. The limitation of the single grinding disc grinding mode directly leads to the subsequent quality inspection process relying on manual work. Since the single grinding disc cannot guarantee the full-area burr removal effect, and there are parts that meet the standard and parts that have blind area residues in batch processing, a special person needs to be arranged to conduct full-area quality inspection on each part after grinding. The quality inspector needs to hold a magnifying glass or a special detection tool to check the plane, edge, orifice and other areas of the part one by one to confirm whether there are burr residues, surface scratches and other problems. If burr residues are found, the part needs to be sent back to the numerical control machine tool for secondary grinding. The repositioning and parameter adjustment process further increases the labor cost, and some parts with size out-of-tolerance caused by secondary grinding may even be directly scrapped, causing material waste. This mode not only greatly reduces the overall production efficiency, but also increases the labor cost and product failure rate. In order to solve this problem, the following design is made on the numerical control machine tool for processing surface burrs of agricultural machinery metal parts: The ten polishing devices 3 are arranged at equal angles about the vertical central axis of the main grinding disc 23, and the polishing device 3 is used to control the operation of the auxiliary grinding disc 10. The reset spring 8 is fixedly connected between the connecting disc 4, and six reset springs 8 are arranged at equal angles about the vertical central axis of the connecting disc 4. The guide groove 11 is arranged in an arc shape, and six guide grooves 11 are arranged at equal angles about the vertical central axis of the auxiliary grinding disc 10. The cleaning scraper 12 is arranged in a triangular shape, and the cleaning scraper 12 is used to scrape off the dirt on the inner wall of the annular isolation plate 9. The debris dust collection groove 13 is arranged in an inclined pipeline shape, and the debris dust collection groove 13 is used to collect the stains scraped off by the cleaning scraper 12. The baffle shaft 15 is fixedly connected between the annular isolation plate 9, and six baffle shafts 15 are arranged at equal angles about the vertical central axis of the annular isolation plate 9. The inner wall of the dust collection groove baffle 14 is arranged in an arc shape, and the shape of the fitting part of the dust collection groove baffle 14 and the annular isolation plate 9 is the same. The limiting pin 18 slides in the inner wall of the telescopic shell 20, and the device spring 19 plays a buffering role. The fixed block 22 is fixedly connected between the connecting disc 4, and six fixed blocks 22 are arranged at equal angles about the vertical central axis of the connecting disc 4.

[0025] The design of the main grinding disc 23 matching the auxiliary grinding disc 10 covers the plane and the edge, the main grinding disc 23 focuses on processing the large-area plane of the accessory, efficiently removing the planar granular burrs, the auxiliary grinding disc 10 is targeted to process the edge and the corner, the auxiliary grinding disc 10 can be flexibly inclined according to the edge form, the auxiliary grinding disc 10 can undertake the fine grinding task of the main grinding disc 23, after the main grinding disc 23 completes rough grinding, the auxiliary grinding disc immediately follows up fine polishing, without the need of replacing the grinding tool, the polishing smoothness is improved, the auxiliary grinding disc 10 relies on the self-adapted fine polishing tool, on the basis of the polishing track of the main grinding disc 23, the plane edge transition area, the corner and the hole periphery are synchronously finely polished, this immediate connection not only avoids the waiting time of grinding tool replacement, but also prevents the workpiece from being stained with debris or oxidized in the interval of replacing the grinding tool, ensures that the surface smoothness after fine polishing is uniform and consistent, simultaneously reduces the load pressure of the main grinding disc 23, prolongs the service life, and truly realizes the dual auxiliary values of efficient polishing and fine polishing.

[0026] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should all belong to the protection scope of the present application.

Claims

1. A CNC machine tool for deburring the surface of metal parts for agricultural machinery, characterized in that, Include: Metal fittings burr processing numerical control machine tool body, the inside of the metal fittings burr processing numerical control machine tool body is connected with driving mechanism, the bottom of the driving mechanism is fixedly connected with the mounting disc, the bottom of the mounting disc is provided with the main grinding disc, the side of the mounting disc is fixedly connected with the polishing device, the bottom of the polishing device is fixedly connected with the connecting disc, the bottom of the connecting disc is fixedly connected with the shaft sleeve, the inside of the shaft sleeve is connected with the universal shaft, the bottom of the universal shaft is fixedly connected with the connecting piece, the side of the connecting piece is fixedly connected with the return spring, the bottom of the connecting piece is fixedly connected with the annular isolation plate, the inside of the annular isolation plate is rotatably connected with the auxiliary grinding disc, the outer wall of the auxiliary grinding disc is provided with the flow guide groove, the side of the auxiliary grinding disc is fixedly connected with the cleaning scraper, the side of the annular isolation plate is provided with the debris dust collection groove, the outer wall of the debris dust collection groove is closely attached with the dust collection groove baffle, the top of the dust collection groove baffle is movably connected with the baffle rotating shaft, the outer wall of the dust collection groove baffle is movably connected with the No. 1 rotating shaft, the top of the No. 1 rotating shaft is fixedly connected with the telescopic inner rod, the top of the telescopic inner rod is fixedly connected with the limit pin, the top of the limit pin is fixedly connected with the device spring, the outer wall of the device spring is connected with the telescopic shell, the top of the telescopic shell is movably connected with the No. 2 rotating shaft, the top of the No. 2 rotating shaft is fixedly connected with the fixed block.

2. The numerically controlled machine tool for burr treatment of metal fitting surfaces of agricultural machines according to claim 1, characterized in that: The polishing device is arranged at equal angles about the vertical central axis of the main grinding disc, and the polishing device is used to control the operation of the auxiliary grinding disc.

3. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The return spring is fixedly connected between the connecting disc, and the return spring is arranged at equal angles about the vertical central axis of the connecting disc.

4. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The flow guide groove is arranged in an arc shape, and the flow guide groove is arranged at equal angles about the vertical central axis of the auxiliary grinding disc.

5. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The cleaning scraper is arranged in a triangular shape, and the cleaning scraper is used to scrape off dirt on the inner wall of the annular isolation plate.

6. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The debris dust collection groove is arranged in an inclined pipeline shape, and the debris dust collection groove is used to collect stains scraped off by the cleaning scraper.

7. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The baffle rotating shaft is fixedly connected between the annular isolation plate, and the baffle rotating shaft is arranged at equal angles about the vertical central axis of the annular isolation plate.

8. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The inner wall of the dust collection groove baffle is arranged in an arc shape, and the dust collection groove baffle is attached to the annular isolation plate in the same shape.

9. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The limit pin slides on the inner wall of the telescopic shell, and the device spring functions as a buffer.

10. The numerically controlled machine for burr treatment of metal parts of agricultural machines according to claim 1, characterized in that: The fixed block is fixedly connected between the connecting disc, and the fixed block is arranged at equal angles about the vertical central axis of the connecting disc.

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