An adjustable multi-angle trimming and deburring device for automotive parts processing.

Abstract

This invention relates to the field of automotive parts manufacturing technology and discloses an adjustable multi-angle trimming and deburring device for automotive parts processing. Addressing the problems of low efficiency and inaccurate positioning in existing technologies for cleaning burrs and flash at the center hole and heat sink of brake discs, this invention proposes a solution combining a trimming machine with a multi-angle trimming mechanism. The device uses a drive motor to rotate the brake disc with a four-jaw chuck. Utilizing components such as ball screws, moving blocks, and connecting rods, four sets of trimming blades simultaneously trim the center hole, the inner and outer sides of the heat sink, and the bottom corners. A buffer rod combined with a spring absorbs impact, and the design of the skewed shaft and magnets ensures precise tool operation. Compared to traditional technologies, this solution achieves one-time cleaning of burrs at multiple locations, eliminates clamping errors, reduces energy consumption and tool wear, has a compact structure, and is suitable for automated trimming of brake discs of different sizes, significantly improving processing efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, and in particular to an adjustable multi-angle trimming and deburring device for processing automotive parts. Background Technology

[0002] In the automotive parts manufacturing industry, brake discs are a critical safety component, and their machining quality directly affects vehicle braking performance. Traditional brake discs, after casting, will produce multiple burrs and flash, mainly concentrated in structurally complex areas such as the center hole and the inner and outer openings of the heat dissipation grooves. These burrs not only affect the product's appearance but may also cause abnormal noise during braking and even affect heat dissipation performance.

[0003] Existing technologies typically employ manual grinding or a single trimming tool, which suffers from the following drawbacks: manual grinding is inefficient and produces inconsistent quality; a single tool struggles to simultaneously handle burrs at different angles; rigid contact can easily damage both the tool and the workpiece; and simultaneous trimming of the inner and outer sides of the center hole is impossible. Particularly for brake discs with complex heat dissipation grooves, traditional trimming equipment often requires multiple clamping and tool changes, resulting in low processing efficiency and difficulty in ensuring consistent trimming quality across different parts. Furthermore, the lack of an effective buffering protection mechanism during trimming makes the equipment susceptible to damage due to rigid contact between the tool and the workpiece. These problems severely restrict the efficiency and quality stability of mass production of brake discs.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing grinding devices have the disadvantage of being unable to handle burrs at different angles at the same time. To this end, we propose an adjustable multi-angle trimming and deburring device for automotive parts processing.

[0006] To achieve the above objectives, this application adopts the following technical solution: an adjustable multi-angle trimming and deburring device for processing automotive parts, comprising: a trimming machine tool, which serves as the basic load-bearing structure of the entire equipment, providing a stable mounting platform for other components and ensuring the stability of the equipment during operation; a drive motor is fixedly installed on the machine tool, which serves as a power source to provide power for the rotation of the brake disc; a four-jaw chuck is driven through a transmission connection; the four-jaw chuck can accurately clamp brake discs of different specifications and shapes to be processed, ensuring that the brake disc is fixed in position during processing and will not be displaced; a slide rail is also provided on the trimming machine tool, which provides a linear sliding track for the slide block, ensuring that the slide block is accurate in direction and runs smoothly during movement; a slide block is slidably connected on the slide rail, which is used to support the multi-angle trimming mechanism and can move flexibly on the slide rail to adjust the relative position between the multi-angle trimming mechanism and the brake disc; and a multi-angle trimming mechanism is fixedly installed on the slide block.

[0007] The multi-angle trimming mechanism includes a buffer rod, one end of which is inserted into the slide block, and the other end of which is rotatably connected to a ball screw. The buffer rod connects the slide block and the ball screw and provides cushioning when subjected to external impact, preventing the multi-angle trimming mechanism from being damaged due to excessive force. The end of the ball screw is fixedly connected to a fixed end, which is used to install and fix components such as the first trimming knife, and at the same time provides a positioning reference for the multi-angle trimming mechanism inside the brake disc. Four sets of tilting shafts are arranged around the fixed end, which provide a rotation fulcrum for the first trimming knife, so that the first trimming knife can flexibly adjust its angle according to the contact with the inner wall of the brake disc. The tilting shafts are rotatably connected to the first trimming knife.

[0008] The ball screw sleeve is equipped with a first movable block, which serves as an auxiliary support and guide. When the ball screw rotates, it guides the second movable block to move along the ball screw. A second movable block is provided on one side of the first movable block. The second movable block is connected to the ball screw through a ball nut. Driven by the ball screw, the second movable block can move linearly along the ball screw, thereby driving the second trimming knife to move closer to or away from the brake disc. A first connecting rod is rotatably connected to the first movable block, and a second connecting rod is rotatably connected to the second movable block. The first connecting rod and the second connecting rod form a linkage mechanism. Through the rotational cooperation of the two, the movement conversion of the second trimming knife in the axial and radial directions can be realized. The second trimming knife is rotatably connected to the ends of the first connecting rod and the second connecting rod.

[0009] A third movable block is provided on one side of the second movable block. The third movable block is sleeved on the outside of the ball screw. The third movable block also moves axially under the drive of the ball screw. Under the action of the spring, it can drive the third trimming knife to achieve a compound axial and radial movement. A fourth movable block is provided on one side of the third movable block. The fourth movable block moves under the drive of the ball screw. Under the action of the spring force, it cooperates with the third movable block to precisely control the movement trajectory of the third trimming knife. A third connecting rod is rotatably connected to the third movable block, and a fourth connecting rod is rotatably connected to the fourth movable block. The linkage mechanism composed of the third and fourth connecting rods can realize the precise trimming operation of the third trimming knife at different positions inside the brake disc. The third trimming knife is rotatably connected to the ends of the third and fourth connecting rods.

[0010] Preferably, a limiting groove is machined on the buffer insert rod, and the buffer insert rod is engaged with the slide block through the limiting groove. This engaging connection method can limit the rotation of the buffer insert rod in the slide block, ensuring that the buffer insert rod only performs buffering movement in the axial direction. A first spring is also sleeved on the outside of the buffer insert rod, and the first spring is located between the buffer insert rod and the slide block. When the ball screw is subjected to axial thrust, the buffer insert rod can compress the first spring, thereby avoiding damage to the multi-angle trimming mechanism, playing a role in protecting the core components of the equipment, and extending the service life of the equipment.

[0011] Preferably, the brake disc has a center hole and heat dissipation grooves around its perimeter. During the casting process, most of the flash and burrs on the brake disc are located at the center hole and the openings at both ends of the heat dissipation grooves. The design of the center hole and heat dissipation grooves is a key structure for the brake disc to achieve its heat dissipation and installation functions. However, these parts are prone to flash and burrs during the casting process, which affects the quality and performance of the brake disc. Therefore, special trimming treatment is required.

[0012] Preferably, the first trimming blade is L-shaped, with the oblique pivot located outside the corner of the first trimming blade. The distance between the long sides of the two opposing sets of first trimming blades is smaller than the diameter of the central hole, and the distance between the short sides of the two opposing sets of first trimming blades is larger than the diameter of the central hole. Thus, when the first trimming blade enters the central hole of the brake disc, the short side of the first trimming blade will collide with the inner wall of the brake disc, causing the first trimming blade to rotate around the oblique pivot. This allows the two blades of the first trimming blade to contact the corners on both sides of the central hole. This design enables the first trimming blade to automatically adapt to the shape of the central hole without the need for a complex adjustment mechanism, achieving efficient cleaning of burrs and flash at the corners of the central hole, thus improving trimming efficiency and quality.

[0013] Preferably, a central magnet is fixedly connected to the fixed end, so that the central magnet can attract the steel first trimming knife, causing the long side of the first trimming knife to move towards the center, avoiding affecting the first trimming knife's entry into the center hole of the brake disc. When the equipment is not working or during the movement of the first trimming knife, the attraction of the central magnet can maintain the stability of the first trimming knife, preventing it from accidentally shaking or interfering, and ensuring the safety and reliability of the equipment operation.

[0014] Preferably, a first replacement trimming blade is fixedly connected to the second trimming blade. The first replacement trimming blade is L-shaped, with its short side in contact with the bottom surface of the brake disc and its long side in contact with the side surface of the brake disc. This cleans the burrs at the bottom corners of the brake disc and the outer opening of the heat dissipation groove. The L-shaped first replacement trimming blade can trim multiple parts of the bottom and side surfaces of the brake disc simultaneously, reducing trimming steps, improving trimming efficiency, and reducing equipment maintenance costs by replacing the worn first replacement trimming blade.

[0015] Preferably, a second replacement trimming blade is fixedly connected to the third trimming blade. The second replacement trimming blade is L-shaped and fits against the inner wall of the brake disc, thereby cleaning the burrs on the inner wall of the brake disc and the inner opening of the heat dissipation groove. The shape and position design of the second replacement trimming blade enable it to penetrate deep into the complex inner opening of the heat dissipation groove inside the brake disc, accurately removing burrs that are difficult to clean, and ensuring the quality of the internal structure of the brake disc.

[0016] Preferably, a first gear is provided at the end of the first connecting rod, and a second gear is provided at the end of the second connecting rod. The first gear and the second gear mesh with each other, thereby ensuring that the first connecting rod and the second connecting rod always rotate synchronously, thus keeping the angle of the second trimming cutter constant. This gear transmission structure can accurately transmit motion, ensuring the stability and accuracy of the second trimming cutter during the trimming process, and avoiding unstable trimming quality due to angle changes. A third gear is provided at the end of the third connecting rod, and a fourth gear is provided at the end of the fourth connecting rod. The third gear and the fourth gear mesh with each other, thereby ensuring that the third connecting rod and the fourth connecting rod always rotate synchronously, thus keeping the angle of the third trimming cutter constant. This ensures that the third trimming cutter can always maintain the correct cutting angle when performing trimming operations inside the brake disc, improving the trimming effect.

[0017] Preferably, one end of the buffer rod is fixedly connected to four rotation limit rods, which are parallel to the ball screw and pass through the second and third movable blocks. The second and third movable blocks are slidably connected to the rotation limit rods. The ends of the four rotation limit rods are fixedly connected to a connecting plate, which is rotatably connected to the ball screw. The connecting plate is used to reinforce the four rotation limit rods and enhance their overall stability. The four rotation limit rods restrict the rotation of the second and third movable blocks, so that when the ball screw rotates, the second and third movable blocks can move along the ball screw, ensuring the accurate movement direction of the second and third movable blocks and avoiding deviation in the trimming position due to rotation.

[0018] Preferably, a second spring is provided between the second and third movable blocks, a third spring is provided between the third and fourth movable blocks, and a fourth spring is provided between the fourth movable block and the connecting plate. When the ball screw rotates, the third movable block pushes the fourth movable block via the third spring, and the connecting plate also exerts a thrust on the fourth movable block via the fourth spring. Under the action of these three sets of springs, the third and fourth movable blocks move towards the brake disc while simultaneously approaching each other. This, in turn, pushes the third trimming cutter towards the inner wall of the brake disc via the connecting rod. At the same time, the second movable block is also compressed. The second spring moves closer to the third movable block, thereby driving the second trimming blade closer to the bottom surface of the brake disc. After the first replacement trimming edge of the second trimming blade contacts the bottom surface of the brake disc, the second trimming blade can no longer move axially. At this time, when the second movable block moves rapidly, it will drive the first and second connecting rods to rotate, thereby causing the second trimming blade to move radially closer to the outer edge of the brake disc. The spring setting can provide buffer and elastic force for the movement of each movable block, so that the trimming blade can adaptively adjust its position when approaching and contacting the brake disc, ensuring that the trimming blade is in close contact with the surface of the brake disc and improving the trimming quality.

[0019] The technical effects and advantages of this invention are as follows:

[0020] This solution boasts significant core technological advantages and remarkable effectiveness. Through a cleverly designed multi-angle trimming mechanism, coupled with buffer rods, springs, and gear transmission, it efficiently cleans burrs and flash from the center hole, bottom edges, and inner and outer openings of the heat dissipation grooves on the brake disc, solving the challenge of trimming complex areas after brake disc casting. Compared to traditional trimming methods, this solution eliminates the need for complex adjustment mechanisms, automatically adapts to the brake disc shape, and reduces processing steps through the collaborative work of multiple trimming blades. High-precision transmission components and limiting structures ensure trimming accuracy and stability. Replaceable trimming blades reduce maintenance costs, while spring buffers and magnetic fixing effectively protect the equipment and workpiece, extending equipment lifespan and operational safety, and significantly improving the quality and efficiency of brake disc trimming. Attached Figure Description

[0021] 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:

[0022] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the slide structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the multi-angle trimming mechanism and brake disc structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the multi-angle trimming mechanism of the present invention;

[0026] Figure 5 This is a cross-sectional view of the multi-angle trimming mechanism and brake disc of the present invention;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the multi-angle trimming mechanism of the present invention;

[0028] Figure 7 This is a schematic diagram of the second trimming knife driving structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the third trimming knife driving structure of the present invention;

[0030] Figure 9 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0031] Figure 10 This is a schematic diagram of the first trimming knife rotation structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the brake disc structure of the present invention.

[0033] Legend: 1. Trimming machine tool; 2. Drive motor; 3. Four-jaw chuck; 4. Brake disc; 401. Center hole; 402. Heat dissipation groove; 5. Slide rail; 6. Slide block; 7. Multi-angle trimming mechanism; 8. Buffer rod; 801. Limiting groove; 9. First spring; 10. Ball screw; 11. Fixed end; 12. Skew shaft; 13. First trimming cutter; 14. Center magnet; 15. First movable block; 16. Second movable block; 17. First connecting rod; 17 01. First gear; 18. Second connecting rod; 1801. Second gear; 19. Second trimming blade; 20. First replacement trimming blade; 21. Third movable block; 22. Fourth movable block; 23. Third connecting rod; 2301. Third gear; 24. Fourth connecting rod; 2401. Fourth gear; 25. Third trimming blade; 26. Second replacement trimming blade; 27. Rotation limit rod; 28. Connecting plate; 29. ​​Second spring; 30. Third spring; 31. Fourth spring. Detailed Implementation

[0034] 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.

[0035] In existing technologies, burrs and flash are easily formed at the openings of the center hole 401 and the heat dissipation groove 402 during the casting process of the brake disc 4. Traditional trimming equipment typically uses a single tool for step-by-step processing, making it impossible to clean multiple complex areas simultaneously. In the field of machining, there is a common problem of insufficient positioning accuracy in trimming mechanisms, which easily leads to rigid impacts when the tool contacts the workpiece, resulting in accelerated tool wear. Some automated equipment attempts to achieve complex contour machining through multi-axis linkage, but suffers from drawbacks such as complex structure and high maintenance costs, making it difficult to meet the special machining requirements of thin-walled annular workpieces like the brake disc 4.

[0036] To address the aforementioned issues, researchers discovered the need to develop a device capable of simultaneously processing burrs on the inner and outer sides of the center hole 401 and both sides of the heat dissipation groove 402. Analysis of the brake disc 4's structural features revealed that the geometric differences between the center hole 401 and the heat dissipation groove 402 prevented traditional cutting tools from being simultaneously adapted. During the research, it was found that utilizing the kinetic energy of the rotating workpiece to drive the trimming mechanism could simplify the power system design. The key breakthrough lay in how to automatically adjust the radial position of multiple trimming tools during axial advance and establish an effective buffer protection mechanism.

[0037] Therefore, this application proposes an apparatus including a trimming machine tool 1, with reference to Figures 1-11 A deburring machine tool 1 is fixedly mounted with a drive motor 2, which is driven by a four-jaw chuck 3 for clamping a brake disc 4. A slide block 6 is slidably connected to a slide rail 5, and a multi-angle deburring mechanism 7 is fixedly mounted on the slide block 6. This mechanism includes a buffer rod 8 inserted into the slide block 6, the other end of which is rotatably connected to a ball screw 10. The end of the ball screw 10 is fixedly connected to a fixed end 11 with four sets of skew shafts 12, and the skew shafts 12 are rotatably connected to a first deburring cutter 13. A first movable block 15 and a second movable block 16 are sleeved on the ball screw 10, and the second movable block 16 is driven by the ball screw 10 through a ball nut. The first movable block 15 is rotatably connected to a first connecting rod 17, and the second movable block 16 is rotatably connected to a second connecting rod 18. The ends of the two connecting rods are rotatably connected to a second deburring cutter 19. A third movable block 21 and a fourth movable block 22 are sleeved on the outside of the ball screw 10 and are respectively connected to a third deburring cutter 25 through connecting rods.

[0038] The buffer rod 8 is engaged with the slide block 6 via a limiting groove 801, and an external first spring 9 provides axial buffering to absorb impact energy when the tool contacts the workpiece. The ball screw 10 converts rotational motion into linear motion, driving the movable block to move axially. The skew shaft 12 allows the first trimming cutter 13 to deflect at an angle when it contacts the workpiece, so that the cutting edge automatically aligns with the edge of the center hole 401. The cooperative design of the movable block and connecting rod converts axial displacement into radial motion, controlling the feed trajectory of the second trimming cutter 19 and the third trimming cutter 25. The four sets of trimming cutters correspond to different processing parts of the brake disc 4, forming a three-dimensional trimming system.

[0039] Specifically, after the brake disc 4 is clamped, it rotates with the four-jaw chuck 3, and the slide 6 advances along the slide rail 5 to allow the fixed end 11 to enter the center hole 401. When the first trimming cutter 13 contacts the hole wall, it deflects around the skew shaft 12, and the double blades simultaneously treat the burrs on the inner and outer sides of the hole. The drive motor 2 drives the second movable block 16 to move axially through the ball screw 10, and the second trimming cutter 19 expands radially under the action of the connecting rod to treat the bottom corners and the outer side of the heat dissipation groove 402. The third movable block 21 moves synchronously to drive the third trimming cutter 25 to expand radially, cleaning the inner wall and the inner side of the heat dissipation groove 402. When each trimming cutter reaches the set position, the ball screw 10 self-locks to form a rigid cutting state, and the rotating workpiece and the fixed cutter generate relative motion to complete the trimming. During retraction, the first spring 9 reset mechanism restores each component to its initial position.

[0040] Compared with existing technologies, this solution achieves multi-tool collaborative operation through mechanical linkage, avoiding the control complexity caused by multiple power sources. Utilizing the workpiece's rotational kinetic energy to drive the trimming mechanism significantly reduces energy consumption. The combination of the buffer rod 8 and the first spring 9 effectively absorbs the impact load at the moment of tool contact, extending tool life. The coordinated design of four sets of moving blocks and connecting rods enables multi-dimensional motion under single-axis drive, ensuring that each trimming tool accurately reaches the predetermined processing position.

[0041] Through the above technical solution, this application achieves simultaneous edge trimming of the center hole 401, the inner and outer sides of the heat dissipation groove 402, and the bottom corners of the brake disc 4, eliminating multiple clamping errors in traditional processes. The mechanical linkage mechanism ensures precise coordination of the movement trajectories of each trimming blade, avoiding over-cutting or under-cutting. The buffer mechanism reduces the impact of equipment operation and improves the stability of the processing. The overall structure is compact and suitable for automated edge trimming operations of brake discs 4 of different sizes.

[0042] This application further proposes that a limiting groove 801 is machined on the buffer plug 8, and the buffer plug 8 is engaged with the slide block 6 through the limiting groove 801. A first spring 9 is also sleeved on the outside of the buffer plug 8. The first spring 9 is located between the buffer plug 8 and the slide block 6. When the ball screw 10 is subjected to axial thrust, the buffer plug 8 can compress the first spring 9, thereby avoiding damage to the multi-angle trimming mechanism 7.

[0043] The limiting groove 801 refers to a longitudinal groove structure provided on the surface of the buffer rod 8, which can be formed by milling. Its width matches the limiting protrusion inside the slide block 6, and is used to limit the axial movement range of the buffer rod 8. The snap-fit ​​connection refers to the limiting protrusion inside the slide block 6 embedding into the limiting groove 801 to form a sliding pair. For example, a clearance fit can be used to achieve axial sliding freedom while limiting circumferential rotation. The first spring 9 is a helical compression spring, whose two ends abut against the flange of the buffer rod 8 and the end face of the slide block 6, respectively. When the ball screw 10 is subjected to an external impact load, the spring is compressed to absorb energy.

[0044] Specifically, when the multi-angle trimming mechanism 7 advances into the center hole 401 of the brake disc 4, the ball screw 10 may generate an axial reaction force due to contact with the inner wall of the brake disc 4. At this time, the buffer rod 8 slides along the direction of the limiting groove 801, and the first spring 9 is compressed, causing the ball screw 10 to generate axial displacement buffer. The engaging structure between the limiting groove 801 and the slide 6 can prevent the buffer rod 8 from disengaging from the slide 6, while limiting its maximum compression stroke. For example, when the first trimming cutter 13 contacts the inner wall of the brake disc 4, the thrust on the ball screw 10 is transmitted to the first spring 9 through the buffer rod 8, avoiding rigid collision that could cause the cutter to break.

[0045] Compared with existing technologies, traditional trimming mechanisms lack axial buffer devices, making them prone to deformation or damage to transmission components due to impact loads when the tool contacts the workpiece. This solution utilizes the synergistic effect of the first spring 9 and the limiting groove 801 to convert impact energy into the elastic potential energy of the spring, while simultaneously protecting critical components through mechanical limiting.

[0046] Through the above technical solution, this application effectively reduces the risk of rigid collision between the tool and the workpiece during the trimming process, extends the service life of the multi-angle trimming mechanism 7, and ensures that the trimming tool can still maintain the predetermined working position after being impacted, avoiding the decrease in processing accuracy due to displacement deviation.

[0047] This application further proposes that the brake disc 4 has a central hole 401 in the center and heat dissipation grooves 402 around its perimeter. During the casting process, most of the flash and burrs on the brake disc 4 are located at the central hole 401 and the openings at both ends of the heat dissipation grooves 402.

[0048] The center hole 401 refers to a circular through hole located at the center of the brake disc 4, which can be formed by machining and is used to install shafts or fix components. This structure makes it easy for burrs to form on the edge of the hole at the core support part during the casting process. The heat dissipation groove 402 refers to the elongated grooves distributed on the outer circumference of the brake disc 4, which can be integrally formed by casting and is used to increase the heat dissipation area. Due to the complex core structure, flash is easily generated on both the inner and outer sides of the groove during demolding.

[0049] Specifically, after the brake disc 4 is clamped by the four-jaw chuck 3, the multi-angle trimming mechanism 7 moves along the slide rail 5 to the position of the center hole 401. When the first trimming blade 13 enters the center hole 401, its short side contacts the hole wall, causing the blade to rotate and fit the inner and outer corners; the second trimming blade 19 is adjusted to the bottom edge of the brake disc 4 through the linkage mechanism, and the L-shaped structure of the first replacement trimming blade 20 simultaneously cleans the bottom corners and the outer burrs of the heat dissipation groove 402; the third trimming blade 25 is pushed to fit against the inner wall of the brake disc 4 by the first spring 9, and the second replacement trimming blade 26 covers the inner opening area of ​​the heat dissipation groove 402. The three sets of trimming blades form a composite axial and radial motion under the drive of the ball screw 10, and act simultaneously on the three burr concentration areas of the center hole 401, the inner and outer ends of the heat dissipation groove 402.

[0050] Compared to existing technologies, traditional deburring equipment typically requires processing burrs at different locations in stages, such as processing the center hole 401 first and then the heat dissipation groove 402, or using different tools to clean the inner and outer burrs separately. This solution achieves simultaneous trimming at three key locations in one go through a multi-angle linkage mechanism, avoiding positioning errors caused by multiple clamping operations. At the same time, the first spring 9 buffer mechanism prevents the trimming blade from excessively squeezing the workpiece.

[0051] Through the above technical solution, this application effectively solves the technical problem of simultaneous cleaning of burrs in multiple positions of the complex structure brake disc 4. In particular, it addresses the problem of flash at the opening of the center hole 401 and the heat dissipation groove 402 caused by the core structure during the casting process. By using a specific trimming knife layout, the integrity and consistency of burr removal are ensured, avoiding assembly interference or subsequent processing accuracy problems caused by residual burrs.

[0052] This application further proposes an adjustable multi-angle trimming and deburring device for automotive parts processing, including a trimming machine tool 1, a drive motor 2, a four-jaw chuck 3, a slide rail 5, a slide block 6, and a multi-angle trimming mechanism 7. In the multi-angle trimming mechanism 7, the first trimming blade 13 is L-shaped, the deflection shaft 12 is located outside the corner of the first trimming blade 13, the distance between the long sides of two opposing sets of first trimming blades 13 is less than the diameter of the central hole 401, and the distance between the short sides of two opposing sets of first trimming blades 13 is greater than the diameter of the central hole 401.

[0053] The L-shaped trimming cutter features a structure with mutually perpendicular long and short sides, typically made of a high-hardness alloy. Angle adjustment is achieved via a deflection shaft 12 at the corner. This structure allows the trimming cutter to rotate upon contact with the inner wall of the central hole 401 via its short side, aligning the cutting edge with the burr area. The deflection shaft 12, located at the outer corner of the L-shaped trimming cutter, can be implemented using a miniature bearing to constrain the trimming cutter's rotational freedom within a single plane. This design ensures that the trimming cutter rotates only around a specific axis under external force, preventing motion interference. The long side spacing being less than the diameter of the central hole 401 means that the distance between the ends of the long sides of the two opposing trimming cutters is slightly smaller than the inner diameter of the hole to be processed, specifically 0.5-2 mm smaller than the hole diameter. This dimensional relationship ensures that the long side of the trimming cutter does not contact the hole wall when entering the central hole 401, with only the short side acting as a trigger mechanism. The setting that the short-side spacing is greater than the diameter of the center hole 401 means that the distance between the ends of the short sides of the two sets of opposing trimming cutters is slightly larger than the inner diameter of the hole to be processed. Specifically, it can be set to be 1-3 mm larger than the hole diameter. This dimensional relationship ensures that the short side of the trimming cutter will inevitably come into contact with the hole wall after entering the center hole 401, triggering the rotation action.

[0054] Specifically, when the trimming mechanism moves toward the center hole 401 of the brake disc 4, the long side of the L-shaped trimming cutter passes through the center hole 401 in a retracted state. When the short side contacts the inner wall of the hole, the impact force pushes the trimming cutter to rotate around the deflection shaft 12. At this time, the long side cutting edge unfolds outward to contact the burrs on the outer side of the hole, and the short side cutting edge unfolds inward to contact the burrs on the inner side of the hole. During this process, the first spring 9 inside the buffer rod 8 can absorb excessive impact and prevent rigid collisions from damaging the cutter. After the trimming cutter completes the angle adjustment, the rotational motion of the brake disc 4 drives the trimming cutter to simultaneously cut the burrs on both the inner and outer sides of the hole.

[0055] Compared to existing technologies, traditional trimming tools are mostly designed with a fixed angle, requiring separate treatment of burrs on both the inner and outer sides of the hole, and necessitating multiple adjustments to the tool position during operation. This solution, however, utilizes an L-shaped tool body and dimensional matching design, enabling a single tool to automatically locate and remove burrs on both the inner and outer sides in a single feed, significantly reducing machining steps.

[0056] Through the above technical solution, this application achieves simultaneous cleaning of burrs on both the inner and outer sides of the center hole 401 of the brake disc 4, eliminating the problem of repeatedly adjusting the tool angle in traditional processes, and increasing the burr cleaning efficiency by more than two times while ensuring machining accuracy. This design also avoids the use of complex active control systems by using a passive adjustment method of collision-triggered rotation, reducing equipment manufacturing costs and maintenance difficulty.

[0057] This application further proposes that a central magnet 14 is fixedly connected to the fixed end 11. The central magnet 14 can attract the steel first trimming knife 13, causing the long side of the first trimming knife 13 to move towards the center, so as to avoid affecting the central hole 401 of the first trimming knife 13 entering the center of the brake disc 4.

[0058] The central magnet 14 refers to a magnetic element installed inside the fixed end 11, which can be a permanent magnet or an electromagnet. The magnetic field it generates can exert an attractive force on the steel trimming knife. The first steel trimming knife 13 refers to a knife made of ferromagnetic material, specifically high-carbon steel or alloy steel, whose magnetic permeability allows it to be attracted by a magnet.

[0059] Specifically, when the multi-angle trimming mechanism 7 moves toward the center hole 401 of the brake disc 4, the central magnet 14 attracts the long side of the first trimming blade 13 towards the central axis through magnetic force, increasing the distance between the short sides of the two sets of opposing first trimming blades 13 to exceed the diameter of the center hole 401, thereby preventing the blade from rigidly colliding with the inner wall of the center hole 401. After the blade fully enters the center hole 401, the short side of the first trimming blade 13 is deflected by the pressure of the inner wall of the brake disc 4. At this time, the magnetic force continues to act on the long side, ensuring that the blade maintains a stable posture during the cutting process. When the trimming mechanism retracts, the magnetic force continues to guide the long side of the first trimming blade 13 back to its initial retracted state.

[0060] Compared to existing technologies, traditional trimming tools lack an active adjustment mechanism, making them prone to jamming or positioning deviations when entering narrow holes due to improper tool unfolding angle. This solution achieves dynamic tool retraction through magnetic adsorption, adaptively adjusting the tool's spatial posture without the need for an additional drive mechanism.

[0061] Through the above technical solution, this application realizes the automatic retraction function of the first trimming tool 13 when entering the center hole 401, which effectively reduces the frictional resistance between the tool and the workpiece, and at the same time ensures the accurate alignment of the tool and the burr contact surface during the cutting process, avoiding incomplete cutting or tool damage caused by tool deviation.

[0062] This application further proposes that a first replacement trimming blade 20 is fixedly connected to the second trimming blade 19. The first replacement trimming blade 20 is L-shaped, with its short side in contact with the bottom surface of the brake disc 4 and its long side in contact with the side surface of the brake disc 4, thereby cleaning the burrs at the bottom corners of the brake disc 4 and the outer opening of the heat dissipation groove 402.

[0063] The first replacement trimming blade 20 refers to an L-shaped cutting component that can be detachably mounted on the second trimming blade 19. Specifically, it can be made of cemented carbide and fixed with bolts. Its vertical structure of short and long sides can simultaneously cover the bottom corners and side areas of the brake disc 4. The burrs at the outer opening of the heat dissipation groove 402 refer to excess metal residue formed on the outer edge of the brake disc 4 during the casting process at the core parting surface. The long side of the L-shaped cutting edge can precisely fit this area for cutting by radial movement.

[0064] Specifically, when the second trimming cutter 19 moves axially until the short side of the first replacement trimming cutter 20 contacts the bottom surface of the brake disc 4, the axial movement is blocked, triggering a linkage mechanism to cause the cutting edge to expand radially. At this time, the short side of the L-shaped cutting edge continuously presses against the bottom edge corner, while the long side slides along the outer surface of the brake disc 4. During the rotation of the brake disc 4, the rounding of the bottom edge corner and the cutting of burrs on the outer opening of the heat dissipation groove 402 are completed simultaneously. In this process, the replaceable cutting edge design allows for quick replacement of the cutting parts according to the wear condition.

[0065] Compared to existing technologies, traditional brake disc trimming devices mostly use fixed single-edged cutters, which cannot simultaneously handle irregular burrs at the bottom corners and side openings. This solution, through the cooperation of an L-shaped replaceable cutting edge and a linkage mechanism, achieves one-time cleaning of burrs in two vertical directions, avoiding positioning errors caused by multiple clamping operations.

[0066] Through the above technical solution, this application effectively solves the technical problem that it is difficult to clean the composite burrs at the bottom corner of the brake disc 4 and the outer opening of the heat dissipation groove 402 at the same time. While ensuring the machining accuracy, it significantly improves the trimming efficiency, and reduces the tool maintenance cost through the modular cutting edge design.

[0067] This application further proposes that a second replacement trimming blade 26 is fixedly connected to the third trimming blade 25. The second replacement trimming blade 26 is L-shaped and fits against the inner wall of the brake disc 4, thereby cleaning the burrs on the inner wall of the brake disc 4 and the inner opening of the heat dissipation groove 402.

[0068] The second replacement trimming blade 26 is a detachable cutting component, specifically a carbide insert fixed to the main body of the third trimming blade 25 by bolts. This structure allows for quick replacement after the cutting edge wears out. The L-shaped structure means that the blade has two mutually perpendicular cutting surfaces, with the short side conforming to the axial end face of the brake disc 4 and the long side conforming to the radial inner wall of the brake disc 4. This geometric adaptation enables simultaneous trimming on both sides. The movement trajectory of the third trimming blade 25 is controlled by a movable block and linkage mechanism. Specifically, the ball screw 10 drives the movable block to move axially, and under the action of the first spring 9, pushes the linkage to change its radial position, ensuring that the second replacement trimming blade 26 always maintains contact pressure with the inner wall of the brake disc 4.

[0069] Specifically, when the ball screw 10 rotates, the third movable block 21 and the fourth movable block 22 move axially closer to the brake disc 4 under the push of the first spring 9. At the same time, the linkage between the third connecting rod 23 and the fourth connecting rod 24 forces the third trimming blade 25 to move radially outward. During this process, the short L-shaped edge of the second replacement trimming blade 26 first contacts the inner wall end face of the brake disc 4. As the radial movement increases, the long L-shaped edge gradually presses against the inner opening edge of the heat dissipation groove 402. Since the L-shaped contour of the second replacement trimming blade 26 matches the shape of the inner wall of the brake disc 4 and the opening of the heat dissipation groove 402, when the brake disc 4 rotates, the blade can simultaneously remove burrs from the inner wall surface and flash from the inner side of the heat dissipation groove 402.

[0070] Compared with existing technologies, traditional brake disc trimming devices typically use a single-direction cutting tool, requiring step-by-step processing of burrs on the inner wall and at the opening of the heat dissipation groove 402. In contrast, this solution uses an L-shaped three-dimensional cutting structure to replace the trimming blade, which can simultaneously clean burrs in two different directions in a single feed action, significantly reducing the processing time.

[0071] Through the above technical solution, this application realizes the synchronous trimming of the complex inner cavity structure of the brake disc 4. The geometric characteristics of the L-shaped blade are used to effectively cover the burr area of ​​the inner wall end face and the opening edge of the heat dissipation groove 402. At the same time, the maintenance efficiency problem caused by tool wear is solved by the detachable and replaceable blade structure.

[0072] This application further proposes that one end of the buffer rod 8 is fixedly connected to four rotation limiting rods 27, the rotation limiting rods 27 are parallel to the ball screw 10, the rotation limiting rods 27 pass through the second movable block 16 and the third movable block 21, the second movable block 16 and the third movable block 21 are slidably connected to the rotation limiting rods 27, and the ends of the four rotation limiting rods 27 are fixedly connected to the connecting plate 28, the connecting plate 28 is rotatably connected to the ball screw 10, the connecting plate 28 is used to reinforce the four rotation limiting rods 27, the four rotation limiting rods 27 restrict the rotation of the second movable block 16 and the third movable block 21, so that when the ball screw 10 rotates, the second movable block 16 and the third movable block 21 can move along the ball screw 10.

[0073] The rotation limit rod 27 is a rigid guide rod parallel to the axis of the ball screw 10. It can be made of stainless steel and passes through the movable block to form a sliding pair, restricting the degree of freedom of rotation of the movable block around the screw axis and ensuring that the movable block moves only axially. The connecting disc 28 is a ring-shaped reinforcing structure located at the end of the rotation limit rod 27. It can be made of high-strength steel plate, stamped and welded to the ends of the four rotation limit rods 27 to form a stable spatial frame structure, preventing deformation of the limit rods under stress.

[0074] Specifically, when the ball screw 10 rotates to drive the movable block to move, the rotation limit rod 27 forms a sliding constraint through the hole passing through the second movable block 16 and the third movable block 21. The four symmetrically distributed limit rods form a rectangular guide frame, effectively suppressing the circumferential deflection of the movable block during movement. The connecting plate 28 serves as a fixed node at the end of the limit rod, increasing structural rigidity to prevent bending deformation of the limit rod under axial load. This structure ensures that the second movable block 16 and the third movable block 21 can only move linearly under the drive of the ball screw, ensuring that the movement trajectory of the trimming tool is precisely aligned with the axis of the brake disc 4.

[0075] Compared with existing technologies, the moving block of traditional trimming equipment relies solely on the lead screw thread pair for guidance. This can easily lead to rotational deviation during high-speed movement or uneven force, resulting in decreased tool positioning accuracy. This solution utilizes a three-dimensional guiding mechanism composed of four limiting rods, forming a dual constraint mechanism. This eliminates the rotational degree of freedom of the moving block and enhances structural rigidity through the connecting plate 28, fundamentally solving the problem of deflection of moving parts.

[0076] Through the above technical solution, this application achieves precise control of the moving trajectory of the movable block, ensuring that the second trimming blade 19 and the third trimming blade 25 maintain their predetermined posture during axial movement. The symmetrical guide structure formed by the four limiting rods effectively disperses the motion load, avoiding wear of parts caused by local stress concentration. At the same time, the reinforcing effect of the connecting plate 28 significantly improves the overall structural stability, ensuring the operational reliability of the equipment under continuous working conditions.

[0077] This application further proposes that one end of the buffer rod 8 is fixedly connected to four rotation limiting rods 27, the rotation limiting rods 27 are parallel to the ball screw 10, the rotation limiting rods 27 pass through the second movable block 16 and the third movable block 21, and the second movable block 16 and the third movable block 21 are slidably connected to the rotation limiting rods 27. The ends of the four rotation limiting rods 27 are fixedly connected to a connecting plate 28, which is rotatably connected to the ball screw 10. The connecting plate 28 is used to reinforce the four rotation limiting rods 27. The four rotation limiting rods 27 restrict the rotation of the second movable block 16 and the third movable block 21, so that when the ball screw 10 rotates, the second movable block 16 and the third movable block 21 can move along the ball screw 10.

[0078] The rotating limit rod 27 is a rigid rod arranged parallel to the ball screw 10, which can be made of stainless steel or carbon steel. It passes through the movable block and restricts the degree of freedom of the movable block to rotate around the axis. Through a sliding connection, the movable block can move only along the axis of the ball screw 10. The connecting plate 28 is a disc-shaped structure fixedly connected to the ends of the four rotating limit rods 27. It can be connected by welding or bolts. It is used to enhance the overall rigidity of the rotating limit rod 27 system and prevent deformation of the multi-rod structure due to uneven stress. The rotating connection of the ball screw 10 means that the connecting plate 28 and the end of the ball screw 10 can rotate relative to each other through bearings or bushings. Specifically, deep groove ball bearings or sliding bearings can be used to ensure the free rotation of the screw while maintaining the fixed relationship between the connecting plate 28 and the limit rods.

[0079] Specifically, when the ball screw 10 rotates to drive the movable block to move, the rotation limit rod 27, through the hole passing through the second movable block 16 and the third movable block 21, restricts the movable block to only translate along the screw axis. The four rotation limit rods 27 are symmetrically distributed, forming a stable guide frame. The connecting plate 28 forms a rigid support by fixing the ends of the four rods, preventing the multi-rod structure from twisting and deforming due to the screw torque. This structure ensures that the second movable block 16 and the third movable block 21 can only move linearly under the screw drive, eliminating tool positioning deviation caused by the rotation of the movable block and ensuring that the trimming tool always moves along the predetermined trajectory.

[0080] In some specific embodiments, the diameter of the rotation limit rod 27 can be 8-12 mm, and its length is determined according to the lead screw stroke. For example, when the effective stroke of the lead screw is 200 mm, the length of the limit rod can be set to 250 mm. The thickness of the connecting plate 28 can be 10-15 mm, and its diameter is determined according to the distribution diameter of the four limit rods. For example, when the limit rods are distributed in a square with a side distance of 50 mm, the diameter of the connecting plate 28 can be set to 70 mm.

[0081] Compared to existing technologies, the movable block of a traditional trimming mechanism is driven only by a lead screw and nut, which is prone to circumferential displacement during high-speed movement, leading to tool trajectory deviation. This solution constructs a spatial guiding mechanism using four rotational limiting rods 27, restricting the movable block's degree of freedom to a single axial movement. Combined with the reinforcement effect of the connecting plate 28, this significantly improves motion stability. Compared to a single-rod limiting structure, the symmetrical four-rod layout can evenly bear the lateral force generated by the lead screw torque, avoiding unilateral wear of the guiding structure.

[0082] Through the above technical solution, this application effectively solves the technical problem of circumferential displacement of the moving block during lead screw drive, ensuring that multiple sets of trimming tools move along precise paths and improving the uniformity of burr removal. The combined structure of the rotating limit rod 27 and the connecting plate 28 enhances the rigidity of the moving components, reduces the vibration amplitude during high-speed movement, and extends the service life of the equipment. This design also simplifies the motion control logic; precise tool positioning can be achieved simply by controlling the lead screw speed, thus improving equipment reliability.

[0083] This application further proposes to provide a second spring 29 between the second movable block 16 and the third movable block 21, a third spring 30 between the third movable block 21 and the fourth movable block 22, and a fourth spring 31 between the fourth movable block 22 and the connecting plate 28. When the ball screw 10 rotates, the third movable block 21 pushes the fourth movable block 22 through the third spring 30, and the connecting plate 28 generates a thrust on the fourth movable block 22 through the fourth spring 31, so that the third movable block 21 and the fourth movable block 22 move closer to each other while moving towards the brake disc 4. The connecting rod pushes the third trimming knife 25 towards the inner wall of the brake disc 4. At the same time, the second movable block 16 compresses the second spring 29 and moves closer to the third movable block 21, causing the second trimming knife 19 to move closer to the bottom surface of the brake disc 4. After the second trimming knife 19 contacts the bottom surface of the brake disc 4, the second movable block 16 continues to move, causing the first connecting rod 17 and the second connecting rod 18 to rotate, causing the second trimming knife 19 to move radially.

[0084] The second spring 29 is an elastic element located between the second movable block 16 and the third movable block 21, specifically a helical spring, used to buffer the relative movement between the second movable block 16 and the third movable block 21 and provide a restoring force. The third spring 30 is an elastic element located between the third movable block 21 and the fourth movable block 22, specifically a disc spring, used to transmit axial thrust and maintain the relative position between the movable blocks. The fourth spring 31 is an elastic element located between the fourth movable block 22 and the connecting disc 28, specifically a wave spring, used to balance the reaction force generated by the axial movement and maintain the synchronization of movement. The three sets of springs form a linkage buffer system, which can convert the rotational motion of the ball screw 10 into multi-directional controllable linear displacement.

[0085] Specifically, when the ball screw 10 rotates and drives the third movable block 21 to move axially, the elastic force generated by the compression of the third spring 30 pushes the fourth movable block 22 to move synchronously. At the same time, the preload of the fourth spring 31 applies an auxiliary thrust to the fourth movable block 22 through the connecting plate 28. This dual action allows the distance between the third movable block 21 and the fourth movable block 22 to be dynamically adjusted during axial movement, thereby enabling the third trimming blade 25 to precisely conform to the inner wall contour of the brake disc 4 through the transmission of the third link 23 and the fourth link 24. When the second movable block 16 is driven to move towards the brake disc 4, the compression of the second spring 29 gradually increases. After the second trimming blade 19 contacts the bottom surface of the brake disc 4, the continuous movement of the second movable block 16 forces the first link 17 and the second link 18 to change angles, thereby converting the axial displacement into the radial feed motion of the second trimming blade 19.

[0086] This application further proposes machining a first gear 1701, a second gear 1801, a third gear 2301, and a fourth gear 2401 at the ends of the first connecting rod 17, the second connecting rod 18, the third connecting rod 23, and the fourth connecting rod 24, respectively. The first gear 1701 meshes with the second gear 1801, thereby ensuring that the first connecting rod 17 and the second connecting rod 18 always rotate synchronously, thus keeping the angle of the second trimming cutter 19 constant. This gear transmission structure can accurately transmit motion, ensuring the stability and accuracy of the second trimming cutter 19 during the trimming process and avoiding unstable trimming quality due to angle changes. The third gear 2301 and the fourth gear 2401 mesh with each other, thereby ensuring that the third connecting rod 23 and the fourth connecting rod 24 always rotate synchronously, thus keeping the angle of the third trimming cutter 25 constant. This ensures that the third trimming cutter 25 can always maintain the correct cutting angle when performing trimming operations inside the brake disc 4, improving the trimming effect.

[0087] Compared to existing technologies, traditional trimming devices typically employ rigid transmission mechanisms, making it difficult to achieve multi-dimensional motion coordination. This solution, however, utilizes the elastic coupling of three sets of springs to create a dynamic balance system among the three moving blocks during axial movement. This ensures flexible contact between the trimming tool and the workpiece surface while also enabling automatic conversion from axial to radial motion. Existing technologies with a single spring structure cannot simultaneously control the coordinated movement of multiple moving blocks, easily leading to tool positioning deviations or motion interference.

[0088] Through the above technical solution, this application realizes the automatic conversion and coordinated control of the axial and radial movements of multiple sets of trimming tools, effectively solving the technical problem of difficult tool trajectory adjustment during the deburring process of complex-shaped workpieces. The elastic transmission system composed of three sets of springs can avoid rigid impact while ensuring cutting accuracy, and is particularly suitable for the automated trimming of brake discs and other types of workpieces with a center hole 401 and a heat dissipation groove 402 structure.

[0089] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An adjustable multi-angle trimming and deburring device for processing automotive parts, characterized in that, include: A trimming machine (1) is provided with a drive motor (2) fixedly installed on the trimming machine (1). The drive motor (2) is connected to a four-jaw chuck (3) for transmission. The four-jaw chuck (3) clamps a brake disc (4) to be processed. The trimming machine (1) is also provided with a slide rail (5). A slide block (6) is slidably connected on the slide rail (5). A multi-angle trimming mechanism (7) is fixedly installed on the slide block (6). The multi-angle trimming mechanism (7) includes a buffer rod (8), one end of which is inserted into the slide (6), and the other end of which is rotatably connected to a ball screw (10). The end of the ball screw (10) is fixedly connected to a fixed end (11), and four sets of deflection shafts (12) are arranged around the fixed end (11). The deflection shafts (12) are rotatably connected to a first trimming knife (13). The buffer rod (8) is machined with a limiting groove (801), and the buffer rod (8) is engaged with the slide (6) through the limiting groove (801). A first spring (9) is also sleeved on the outside of the buffer rod (8), and the first spring (9) is located between the buffer rod (8) and the slide (6). The ball screw (10) is fitted with a first movable block (15), and a second movable block (16) is provided on one side of the first movable block (15). The second movable block (16) is connected to the ball screw (10) through a ball nut. A first connecting rod (17) is rotatably connected to the first movable block (15), and a second connecting rod (18) is rotatably connected to the second movable block (16). A second trimming knife (19) is rotatably connected to the ends of the first connecting rod (17) and the second connecting rod (18). A third movable block (21) is provided on one side of the second movable block (16). The third movable block (21) is sleeved on the outside of the ball screw (10). A fourth movable block (22) is provided on one side of the third movable block (21). A third connecting rod (23) is rotatably connected to the third movable block (21). A fourth connecting rod (24) is rotatably connected to the fourth movable block (22). A third trimming knife (25) is rotatably connected to the ends of the third connecting rod (23) and the fourth connecting rod (24). The buffer rod (8) is fixedly connected to four rotating limit rods (27) at one end. The rotating limit rods (27) are parallel to the ball screw (10). The rotating limit rods (27) pass through the second movable block (16) and the third movable block (21). The second movable block (16) and the third movable block (21) are slidably connected to the rotating limit rods (27). The ends of the four rotating limit rods (27) are fixedly connected to a connecting plate (28). The connecting plate (28) is rotatably connected to the ball screw (10). A second spring (29) is provided between the second movable block (16) and the third movable block (21), a third spring (30) is provided between the third movable block (21) and the fourth movable block (22), and a fourth spring (31) is provided between the fourth movable block (22) and the connecting plate (28).

2. The adjustable multi-angle trimming and deburring device for automotive parts processing according to claim 1, characterized in that, The brake disc (4) has a central hole (401) in the center and heat dissipation grooves (402) around its perimeter.

3. The adjustable multi-angle trimming and deburring device for automotive parts processing according to claim 2, characterized in that, The first trimming knife (13) is L-shaped. The skewed shaft (12) is located outside the corner of the first trimming knife (13). The distance between the long sides of the two sets of first trimming knives (13) is smaller than the diameter of the central hole (401), and the distance between the short sides of the two sets of first trimming knives (13) is larger than the diameter of the central hole (401).

4. The adjustable multi-angle trimming and deburring device for processing automotive parts according to claim 1, characterized in that, A central magnet (14) is fixedly connected to the fixed end (11).

5. The adjustable multi-angle trimming and deburring device for automotive parts processing according to claim 1, characterized in that, The second trimming knife (19) is fixedly connected to a first replacement trimming blade (20). The first replacement trimming blade (20) is L-shaped. The short side of the first replacement trimming blade (20) is in contact with the bottom surface of the brake disc (4), and the long side of the first replacement trimming blade (20) is in contact with the side surface of the brake disc (4).

6. The adjustable multi-angle trimming and deburring device for automotive parts processing according to claim 1, characterized in that, The third trimming knife (25) is fixedly connected to a second replacement trimming blade (26), which is L-shaped and fits against the inner wall of the brake disc (4).

7. The adjustable multi-angle trimming and deburring device for automotive parts processing according to claim 1, characterized in that, The first connecting rod (17) is provided with a first gear (1701) at its end, the second connecting rod (18) is provided with a second gear (1801) at its end, the first gear (1701) and the second gear (1801) mesh with each other, the third connecting rod (23) is provided with a third gear (2301) at its end, and the fourth connecting rod (24) is provided with a fourth gear (2401) at its end, the third gear (2301) and the fourth gear (2401) mesh with each other.

Images