Cutter changing type automatic chamfering equipment for scraper strip machining

Abstract

The invention relates to the technical field of automatic chamfering equipment, in particular to tool changing type automatic chamfering equipment for scraper strip machining, and relates to the technical field of automatic chamfering equipment. The tool changing type automatic chamfering equipment comprises a numerical control box and a plurality of tools, and a pair of transverse electric sliding rails is fixedly installed on the upper wall face in the numerical control box; according to the tool changing type automatic chamfering equipment for scraper strip machining, the bearing blocks and the bearing grooves are designed in the tool magazine box, so that multiple tools of different specifications can be contained, the 180-degree switching function of the automatic tool changing device is matched, the tool changing efficiency is improved, and the tool changing efficiency is improved. The special chamfering machine tool can quickly respond to the machining requirements of scraper strips of different specifications, special tools or complex adjusting equipment do not need to be replaced, the product model changing time is greatly shortened, the problem that a traditional special chamfering machine tool is insufficient in flexibility is solved, and the special chamfering machine tool is suitable for the multi-variety and small-batch production mode of the modern manufacturing industry.

Description

Technical Field

[0001] This invention relates to the field of automated chamfering equipment technology, specifically a tool-changing automated chamfering device for scraper blade processing. Background Technology

[0002] In fields such as precision machining, mold manufacturing, and automotive parts production, scraper blades are key components, and the quality of their chamfered edges directly affects the product's assembly accuracy, performance, and service life. Therefore, chamfering is one of the core processes in scraper blade production.

[0003] Currently, the mainstream chamfering methods in the industry are mainly divided into three categories: First, hand-held tool chamfering, which relies entirely on the operator's skill and experience. This method is not only inefficient but also makes it difficult to ensure the consistency of chamfer dimensions and angles in mass production, failing to meet the actual needs of high-precision, high-volume production. Second, dedicated chamfering machine tools, although designed specifically for the chamfering process, have limited functionality and lack flexibility. When it is necessary to quickly change models to accommodate different specifications and models of scraper strips, complex adjustments to the equipment are required, or even the replacement of dedicated tooling, which greatly affects the production rhythm and is difficult to adapt to the multi-variety, small-batch production mode of modern manufacturing. Third, programmed processing based on general-purpose CNC machine tools (such as machining centers) supplemented by chamfering tools. Although this method has a certain level of processing accuracy, in actual production, key steps such as tool loading and unloading and tool setting still require manual intervention. This not only increases production support time and reduces overall production efficiency but also easily introduces the risk of accuracy fluctuations due to human error, leading to a decrease in product qualification rate. It also increases the professional skill requirements for operators.

[0004] In summary, existing chamfering technologies generally suffer from low efficiency, poor precision and stability, insufficient flexibility, and reliance on manual operation. They struggle to balance production efficiency, processing accuracy, and product compatibility, failing to fully meet the urgent needs of the scraper strip processing industry for efficient, precise, flexible, and automated production. Therefore, developing a tool-changing automated chamfering device that can solve the above-mentioned technical pain points has significant practical importance and industry value. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a tool-changing automated chamfering device for scraper strip processing. This solves the problems of current common chamfering methods, which mainly include handheld tool chamfering, dedicated chamfering machine tool processing, and programmed processing based on general-purpose CNC machine tools (such as machining centers) supplemented by chamfering tools. Handheld tool chamfering relies on operator skills, resulting in low efficiency and poor consistency, making it difficult to meet the demands of large-volume, high-precision production. Dedicated chamfering machine tools, while highly specialized, have limited functionality and insufficient flexibility, making them difficult to adapt to rapid product changes. Furthermore, chamfering on machining centers and similar equipment typically requires manual intervention for tool loading, unloading, and tool setting, which not only increases auxiliary time and affects overall production efficiency but also introduces the risk of precision fluctuations due to human factors.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automated chamfering device for scraper blade processing, comprising a CNC box and several cutting tools. A pair of transverse electric slide rails are fixedly installed on the upper wall of the CNC box. A longitudinal electric slide rail is connected between the moving ends of the transverse electric slide rails. A first hydraulic cylinder is fixedly installed on the moving end of the longitudinal electric slide rail. A cylinder is fixedly installed on the telescopic end of the first hydraulic cylinder. A clamping assembly is provided inside the cylinder. The cutting tools are connected to the clamping assembly. A tool magazine box is fixedly installed on the rear wall of the CNC box. An opening is provided on the wall of the tool magazine box near the CNC box. A roller shutter door is installed in the opening. A tool changing device is installed on the upper wall of the tool magazine box. A first motor is fixedly installed on the lower wall of the tool magazine box. A bearing block is fixedly installed on the drive end of the first motor. Several bearing grooves are provided on the bearing block, and several cutting tools are inserted into the bearing grooves.

[0007] Preferably, the clamping assembly includes a first cylinder, which is fixedly installed on the upper wall of the cylinder body. A second motor is fixedly installed on the telescopic end of the first cylinder, and a limiting cylinder is fixedly installed on the drive end of the second motor. A rotating cylinder is rotatably installed inside the cylinder body and below the limiting cylinder, and the limiting cylinder passes through the rotating cylinder.

[0008] Preferably, the limiting cylinder has a hexagonal prism structure, and the inner wall of the rotating cylinder has a hexagonal prism structure.

[0009] Preferably, the lower end of the limiting cylinder is provided with a first inclined surface towards the center of the limiting cylinder, and the limiting cylinder is provided with a second inclined surface above the inclined surface in the opposite direction to the center of the limiting cylinder. The outer wall surface of the lower end of the limiting cylinder is provided with a plurality of openings, and the outer diameter of the limiting cylinder gradually increases from top to bottom.

[0010] Preferably, the cutting tool includes a handle and a cutting head. The handle has a hexagonal prism structure. A support rod is fixedly installed on the upper outer wall of the handle. A limit ball is fixedly installed on the support rod. The cutting head is fixedly installed on the lower wall of the handle. A limit plate is fixedly installed on the side wall of the handle.

[0011] Preferably, the tool changing device includes a second hydraulic cylinder, which is fixedly installed on the upper wall of the tool magazine box. A rotary motor is fixedly installed on the telescopic end of the second hydraulic cylinder, and a housing is fixedly installed on the drive end of the rotary motor. A partition is fixedly installed at the center of the housing. The housing has an open structure at both ends. A pair of moving rods are movably installed inside the housing. One end of each moving rod is exposed outside the housing and is fixedly installed with a gripping assembly. The other end of each moving rod has a threaded groove. Lead screws are rotatably installed on the two walls of the partition. The other end of each lead screw is screwed into the threaded groove. A driven gear is fixedly installed on each lead screw. A pair of third motors are fixedly installed on the lower wall of the housing. The drive end of each third motor passes through the housing and is fixedly installed with a driving gear. The driving gear meshes with the driven gear.

[0012] Preferably, both the driving gear and the driven gear are bevel gear structures.

[0013] Preferably, the gripping assembly includes a U-shaped plate and a pair of clamping plates. The U-shaped plate is fixedly installed on the exposed end of the moving rod. A second cylinder is fixedly installed on the side wall of the U-shaped plate. A moving block is fixedly installed on the telescopic end of the second cylinder. Two pairs of rotating rods are hinged to the moving block. A stop bar is fixedly installed between the upper and lower walls of the U-shaped plate and on both sides of the moving block. A guide groove is provided on the clamping plate. The clamping plate is slidably installed on the stop bar through the guide groove. The other end of the rotating rod is hinged to the clamping plate. Beneficial effects

[0014] 1. High degree of automation, reducing reliance on manual labor and labor intensity: This invention integrates a three-axis moving mechanism consisting of a transverse electric slide rail, a longitudinal electric slide rail, and a first hydraulic cylinder, along with an automated tool changer and clamping components, to achieve full automation of tool loading and unloading, machining position adjustment, and chamfering operations. It eliminates the need for manual intervention in tool changing and tool setting, effectively solving the problem of high reliance on operator skills in traditional machining methods, significantly reducing labor intensity, and avoiding human error, thus providing a stable guarantee for mass production.

[0015] 2. High machining precision, improving product quality and consistency: The clamping assembly adopts a hexagonal prism structure with a limiting cylinder and a rotating cylinder in combination. The inclined surface design of the limiting cylinder and the rigid clamping of the limiting ball achieve gapless fixation of the tool, ensuring the coaxiality and angular velocity consistency of the tool during rotation. The tool changing device, through the design of lead screw drive and bevel gear meshing, achieves translational positioning accuracy of ±0.01mm and circumferential switching positioning accuracy ≤0.02mm. Combined with the precise movement of the three-axis moving mechanism, it significantly improves the dimensional and angular accuracy of chamfering, effectively ensuring the uniformity of product quality in mass production and significantly reducing the product defect rate.

[0016] 3. High flexibility, adaptable to multiple product specifications and quick changeover: The tool magazine box is designed with support blocks and support grooves to accommodate multiple tools of different specifications. Combined with the 180° switching function of the automated tool changer, it can quickly respond to the processing needs of different specifications of scraper blades without the need to change special tooling or complex adjustment equipment. This greatly shortens the product changeover time and solves the problem of insufficient flexibility of traditional special chamfering machine tools. It is suitable for the multi-variety, small-batch production mode of modern manufacturing industry.

[0017] 4. Improved production efficiency and reduced production costs: The automated tool changer significantly shortens the auxiliary time for tool changing, and the three-axis moving mechanism enables rapid and precise adjustment of the machining position. Combined with the high-rigidity spindle drive design, it ensures continuous and efficient chamfering operations. Compared with traditional machining methods, production efficiency is significantly improved. At the same time, the increase in product qualification rate, the reduction in labor costs, and the shortening of production auxiliary time further reduce the overall production cost and enhance the company's market competitiveness.

[0018] 5. Reasonable structural design, strong stability and reliability: This invention adopts a modular design, with clear division of labor and stable connection of each component. The elastic opening structure and inclined surface design of the limiting cylinder not only ensure the firmness of the tool clamping, but also facilitate the smooth loading and unloading of the tool. The screw drive of the tool changing device and the linkage drive structure of the gripping assembly ensure smooth transmission and uniform force distribution, effectively extending the service life of the equipment. The roller shutter door design of the tool magazine box can protect the tools from dust, further improving the reliability of the equipment operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main view structure described in this invention; Figure 2 This is a schematic diagram of the main sectional view of the structure described in this invention; Figure 3 This is a schematic diagram of the side view structure described in this invention; Figure 4 This is a schematic diagram of the gripper assembly structure described in this invention; Figure 5This is a schematic cross-sectional view of the box structure described in this invention; Figure 6 This is a schematic diagram of the clamping assembly structure described in this invention; Figure 7 This is a cross-sectional view of the clamping assembly described in this invention; Figure 8 for Figure 7 Enlarged view of point A in the image.

[0020] Explanation of reference numerals in the attached drawings: 1. CNC box; 2. Tool; 3. Transverse electric slide rail; 4. Longitudinal electric slide rail; 5. First hydraulic cylinder; 6. Cylinder; 7. Tool magazine box; 8. Roller shutter door; 9. First motor; 10. Bearing block; 11. Bearing groove; 12. First cylinder; 13. Second motor; 14. Limiting cylinder; 15. Rotating cylinder; 16. Tool holder; 17. Tool head; 18. Support rod; 19. Limiting ball; 20. Limiting plate; 21. Second hydraulic cylinder; 22. Box body; 23. Partition plate; 24. Moving rod; 25. Lead screw; 26. Driven gear; 27. Third motor; 28. Driving gear; 29. ​​U-shaped plate; 30. Clamping plate; 31. Second cylinder; 32. Moving block; 33. Rotating rod; 34. Stop bar; 35. Guide groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-8 This invention provides a technical solution: an automated chamfering device with tool changing mechanism for scraper blade processing, comprising a CNC box 1 and several cutting tools 2. A pair of transverse electric slide rails 3 are fixedly installed on the upper inner wall of the CNC box 1. A longitudinal electric slide rail 4 is connected between the moving ends of the transverse electric slide rails 3. A first hydraulic cylinder 5 is fixedly installed on the moving end of the longitudinal electric slide rail 4. A cylinder 6 is fixedly installed on the telescopic end of the first hydraulic cylinder 5. A clamping assembly is provided inside the cylinder 6. The cutting tools 2 are connected to the clamping assembly. A tool magazine box 7 is fixedly installed on the outer rear wall of the CNC box 1. An opening is opened on the wall of the tool magazine box 7 near the CNC box 1. A roller shutter door 8 is installed in the opening. A tool changing device is installed on the upper inner wall of the tool magazine box 7. A first motor 9 is fixedly installed on the lower inner wall of the tool magazine box 7. A bearing block 10 is fixedly installed on the driving end of the first motor 9. Several bearing grooves 11 are opened on the bearing block 10. Several cutting tools 2 are inserted into the bearing grooves 11.

[0023] In this embodiment, the clamping assembly includes a first cylinder 12, which is fixedly installed on the upper inner wall of the cylinder 6. A second motor 13 is fixedly installed on the telescopic end of the first cylinder 12, and a limiting cylinder 14 is fixedly installed on the driving end of the second motor 13. A rotating cylinder 15 is rotatably installed inside the cylinder 6 and below the limiting cylinder 14, and the limiting cylinder 14 passes through the rotating cylinder 15.

[0024] In this embodiment, the limiting cylinder 14 is a hexagonal prism structure, and the inner wall of the rotating cylinder 15 is a hexagonal prism structure.

[0025] In this embodiment, the lower end of the limiting cylinder 14 is provided with a first inclined surface toward the center of the limiting cylinder 14, and the limiting cylinder 14 is provided with a second inclined surface above the inclined surface in the opposite direction to the center of the limiting cylinder 14. The outer wall surface of the lower end of the limiting cylinder 14 is provided with a plurality of openings, and the outer diameter of the limiting cylinder 14 gradually increases from top to bottom.

[0026] In this embodiment, the cutting tool 2 is further configured to include a handle 16 and a cutting head 17. The handle 16 has a hexagonal prism structure. A support rod 18 is fixedly installed on the upper outer wall of the handle 16. A limit ball 19 is fixedly installed on the support rod 18. The cutting head 17 is fixedly installed on the lower wall of the handle 16. A limit plate 20 is fixedly installed on the side wall of the handle 16.

[0027] When the tool 2 is installed and clamped, the tool holder 16 is inserted along the hexagonal prism inner wall of the rotating cylinder 15 until the limiting plate 20 is in contact with the lower end face of the rotating cylinder 15, achieving initial axial positioning. At this time, the first cylinder 12 is started and drives the limiting cylinder 14 to move upward. Since the outer diameter of the limiting cylinder 14 gradually increases from top to bottom and the lower end has an elastic opening structure, during the upward movement, the first inclined surface of the limiting cylinder 14 contacts the limiting ball 19 of the tool and generates radial extrusion force. As the limiting cylinder 14 continues to move upward, the extrusion force gradually increases until the limiting ball 19 is tightly clamped between the inclined surface of the limiting cylinder 14 and the inner wall of the rotating cylinder 15, completing the rigid clamping of the tool.

[0028] When the tool needs to be released, the first cylinder 12 drives the limiting cylinder 14 to move downward. The radial pressing force of the limiting cylinder 14 on the limiting ball 19 gradually decreases, the elastic opening at the lower end of the limiting cylinder 14 resets, the limiting ball 19 is released from the clamping constraint, and the tool can be smoothly removed or the tool can be changed.

[0029] When the second motor 13 starts, it drives the rotating cylinder 15 to rotate synchronously through the hexagonal prism structure of the limiting cylinder 14. The rotating cylinder 15 then drives the tool to rotate as a whole through the hexagonal prism of the tool holder 16. Since all mating surfaces are in rigid contact with hexagonal prisms and there is no transmission gap, it ensures that the angular velocity of the tool is consistent during the rotation process, providing a stable power output for high-precision chamfering.

[0030] In this embodiment, the tool changing device includes a second hydraulic cylinder 21, which is fixedly installed on the upper wall of the tool magazine 7. A rotary motor is fixedly installed on the telescopic end of the second hydraulic cylinder 21, and a housing 22 is fixedly installed on the drive end of the rotary motor. A partition 23 is fixedly installed at the center of the housing 22. The housing 22 has an open structure at both ends. A pair of moving rods 24 are movably installed inside the housing 22. One end of the moving rod 24 is exposed outside the housing 22 and is fixedly installed with a gripping assembly. The other end of the moving rod 24 has a threaded groove. A lead screw 25 is rotatably installed on each of the two walls of the partition 23. The other end of the lead screw 25 is screwed into the threaded groove. A driven gear 26 is fixedly installed on the lead screw 25. A pair of third motors 27 are fixedly installed on the lower outer wall of the housing 22. The drive end of the third motor 27 passes through the housing 22 and is fixedly installed with a driving gear 28. The driving gear 28 meshes with the driven gear 26.

[0031] In this embodiment, both the driving gear 28 and the driven gear 26 are bevel gear structures.

[0032] In this embodiment, the gripping assembly includes a U-shaped plate 29 and a pair of clamping plates 30. The U-shaped plate 29 is fixedly installed on the exposed end of the moving rod 24. A second cylinder 31 is fixedly installed on the side wall of the U-shaped plate 29. A moving block 32 is fixedly installed on the telescopic end of the second cylinder 31. Two pairs of rotating rods 33 are hinged to the moving block 32. A stop rod 34 is fixedly installed between the upper and lower walls of the U-shaped plate 29 and on both sides of the moving block 32. A guide groove 35 is provided on the clamping plate 30. The clamping plate 30 is slidably installed on the stop rod 34 through the guide groove 35. The other end of the rotating rod 33 is hinged to the clamping plate 30.

[0033] Translation drive implementation: When it is necessary to extend or retract the moving rod 24, the third motor 27 starts, and its drive end drives the drive gear 28 to rotate. Since the drive gear 28 and the driven gear 26 are bevel gears, the rotational power in the horizontal direction is converted into torque in the vertical direction, which drives the lead screw 25 to rotate synchronously. The lead screw 25 and the moving rod 24 are screwed together, and the rotational motion of the lead screw 25 is converted into the linear translational motion of the moving rod 24. By controlling the forward and reverse rotation of the third motor 27, the extension and retraction of the moving rod 24 can be realized. The translational positioning accuracy can reach ±0.01mm.

[0034] Clamping action: When it is necessary to clamp the tool, the second cylinder 31 is activated and its telescopic end is retracted, pulling the moving block 32 towards the closed end of the U-shaped plate 29. The moving block 32 drives the rotating rods 33 on both sides to rotate around the hinge point. The other end of the rotating rod 33 pushes the clamping plate 30 to move inwards and towards each other along the axis of the stop rod 34 until the anti-slip texture of the clamping plate 30 is tightly fitted with the tool handle, thus completing the clamping. When it is necessary to release the tool, the telescopic end of the second cylinder 31 extends, pushing the moving block 32 towards the open end of the U-shaped plate 29. The rotating rod 33 pulls the clamping plate 30 to move outwards and in the opposite direction along the stop rod 34, releasing the clamping force and realizing the release of the tool.

[0035] 180° tool change switching implementation: A set of gripping components is installed at both ends of the housing 22 of the tool changer. When one gripping component holds the old tool and the other gripping component holds the new tool, the rotating motor is started, driving the housing 22 to rotate 180° around the axis of the rotating motor, completing the position switching between the old and new tools. The circumferential positioning accuracy during the switching process is ≤0.02mm, ensuring the coaxiality of subsequent tool installation.

[0036] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0037] Example: As shown in the accompanying drawings, during use, all the above-mentioned electrical components are electrically connected to an external controller. The external controller controls the above-mentioned electrical components to complete the corresponding actions. After the external fixture is installed on the lower wall of the CNC box 1, the workpiece to be processed is placed on the fixture. At this time, the cutting tool 2 in the rotating cylinder 15 is replaced according to the processing requirements. First, the roller shutter door 8 is opened, and the third motor 27 near the roller shutter door 8 is started. The drive end of the third motor 27 drives the drive gear 28 to rotate. The drive gear 28 meshes with the driven gear 26, which in turn drives the lead screw 25 to rotate. Since the moving rod 24 is connected to the lead screw 25 through the threaded groove, 5. The engagement connection allows the lead screw 25 to rotate, driving the moving rod 24. The moving rod 24 moves outward from the housing 22 until the clamping plate 30 is positioned on both sides of the tool holder 16 on the rotating cylinder 15. At this point, the second cylinder 31 is activated, its extension end retracting, pulling the rotating rod 33. The rotating rod 33 pulls the clamping plate 30, which, under the action of the stop rod 34 and the guide groove 35, moves in opposite directions, thus clamping and fixing the tool holder 16. Then, the first cylinder 12 is activated, indirectly driving the limiting cylinder 14 downward, releasing the clamping force of the limiting ball 19. Finally, the second hydraulic cylinder 21 is activated, causing the tool 2 to move downward. Continue to activate the second hydraulic cylinder 21, causing the clamping plates 30 on the side closest to the support block 10 to move towards each other. Activate the third motor 27 on the side closest to the support block 10, causing the moving rod 24 to move out and positioning the clamping plates 30 on both sides of the tool 2 on the support block 10. The tool 2 to be replaced is clamped by the clamping plates 30. Activate the second hydraulic cylinder 21 again, causing the tool 2 to be replaced to move upwards. Activate the rotating motor, causing the clamps at both ends of the housing 22 to switch 180 degrees. Activate the second hydraulic cylinder 21 again, causing the housing 22 to move downwards, placing the replaced tool 2 into the support groove 11. Activate the second hydraulic cylinder 21 again, causing the tool holder 16 with the replacement tool to be inserted into the rotating... The ball 19 is inserted into the limiting cylinder 14, and the first cylinder 12 is activated. The first cylinder 12 drives the limiting cylinder 14 to move upward. Since the outer diameter of the limiting cylinder 14 gradually increases from top to bottom, the limiting cylinder 14 clamps and fixes the limiting ball 19. At this time, the clamping plate 30 is released, and the moving rod 24 is reset. The roller shutter door 8 is closed, and the first motor 9 is activated. The first motor 9 drives the limiting cylinder 14 to rotate, and the limiting cylinder 14 drives the rotating cylinder 15 to rotate, which in turn causes the cutter head 17 to rotate. The transverse electric slide rail 3, the longitudinal electric slide rail 4, and the first hydraulic cylinder 5 drive the cutter head 17 to perform a three-axis chamfering process on the workpiece.

[0038] In the description of this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this invention, "a plurality of" means two or more, unless otherwise expressly specified. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool-changing automated chamfering device for processing scraper strips, comprising a CNC box (1) and a plurality of cutting tools (2), characterized in that, A pair of transverse electric slide rails (3) are fixedly installed on the upper inner wall of the CNC box (1). A longitudinal electric slide rail (4) is connected between the moving ends of the transverse electric slide rails (3). A first hydraulic cylinder (5) is fixedly installed on the moving end of the longitudinal electric slide rail (4). A cylinder (6) is fixedly installed on the telescopic end of the first hydraulic cylinder (5). A clamping assembly is provided inside the cylinder (6). The cutting tool (2) is connected to the clamping assembly. A pair of transverse electric slide rails (3) are fixedly installed on the upper inner wall of the CNC box (1). Tool magazine box (7), the tool magazine box (7) has an opening on the wall near the CNC box (1), a roller shutter door (8) is installed in the opening, a tool changing device is installed on the upper wall inside the tool magazine box (7), a first motor (9) is fixedly installed on the lower wall inside the tool magazine box (7), a bearing block (10) is fixedly installed on the drive end of the first motor (9), a plurality of bearing grooves (11) are opened on the bearing block (10), and a plurality of the tools (2) are inserted into the bearing grooves (11).

2. The tool-changing automated chamfering device for scraper blade processing according to claim 1, characterized in that... The clamping assembly includes a first cylinder (12), which is fixedly installed on the upper inner wall of the cylinder (6). A second motor (13) is fixedly installed on the telescopic end of the first cylinder (12). A limiting cylinder (14) is fixedly installed on the driving end of the second motor (13). A rotating cylinder (15) is rotatably installed inside the cylinder (6) and below the limiting cylinder (14). The limiting cylinder (14) passes through the rotating cylinder (15).

3. The automatic chamfering device for scraper blade processing according to claim 2, characterized in that... The limiting cylinder (14) has a hexagonal prism structure, and the inner wall of the rotating cylinder (15) has a hexagonal prism structure.

4. The tool-changing automated chamfering device for scraper blade processing according to claim 2, characterized in that... The lower end of the limiting cylinder (14) is provided with a first inclined surface towards the center of the limiting cylinder (14), and the limiting cylinder (14) is provided with a second inclined surface in the opposite direction to the center of the limiting cylinder (14) above the inclined surface. The outer wall surface of the lower end of the limiting cylinder (14) is provided with several openings, and the outer diameter of the limiting cylinder (14) gradually increases from top to bottom.

5. The tool-changing automated chamfering device for scraper blade processing according to claim 4, characterized in that... The cutting tool (2) includes a handle (16) and a cutting head (17). The handle (16) has a hexagonal prism structure. A support rod (18) is fixedly installed on the upper outer wall of the handle (16). A limit ball (19) is fixedly installed on the support rod (18). The cutting head (17) is fixedly installed on the lower wall of the handle (16). A limit plate (20) is fixedly installed on the side wall of the handle (16).

6. The tool-changing automated chamfering device for scraper blade processing according to claim 1, characterized in that... The tool changing device includes a second hydraulic cylinder (21), which is fixedly installed on the upper wall of the tool magazine box (7). A rotary motor is fixedly installed on the telescopic end of the second hydraulic cylinder (21), and a housing (22) is fixedly installed on the drive end of the rotary motor. A partition (23) is fixedly installed at the center of the housing (22). The housing (22) has an open structure at both ends. A pair of moving rods (24) are movably installed inside the housing (22). One end of the moving rod (24) is exposed outside the housing (22) and fixedly installed. Equipped with a gripping assembly, the other end of the moving rod (24) has a threaded groove, and the two walls of the partition (23) are respectively rotatably mounted with lead screws (25), the other end of the lead screws (25) is screwed into the threaded groove, and a driven gear (26) is fixedly mounted on the lead screws (25). A pair of third motors (27) are fixedly mounted on the lower outer wall of the housing (22), and the driving end of the third motors (27) passes through the housing (22) and is fixedly mounted with a driving gear (28). The driving gear (28) meshes with the driven gear (26).

7. The automatic chamfering device for scraper blade processing according to claim 6, characterized in that... Both the driving gear (28) and the driven gear (26) are bevel gear structures.

8. The tool-changing automated chamfering device for scraper blade processing according to claim 6, characterized in that... The gripping assembly includes a U-shaped plate (29) and a pair of clamping plates (30). The U-shaped plate (29) is fixedly installed on the exposed end of the moving rod (24). A second cylinder (31) is fixedly installed on the side wall of the U-shaped plate (29). A moving block (32) is fixedly installed on the telescopic end of the second cylinder (31). Two pairs of rotating rods (33) are hinged to the moving block (32). A stop rod (34) is fixedly installed between the upper and lower walls of the U-shaped plate (29) and on both sides of the moving block (32). A guide groove (35) is provided on the clamping plate (30). The clamping plate (30) is slidably installed on the stop rod (34) through the guide groove (35). The other end of the rotating rod (33) is hinged to the clamping plate (30).

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