A chamfering, deburring, and grinding device for brake disc production.

Abstract

This invention relates to the field of grinding equipment technology, specifically proposing a chamfering and deburring grinding device for brake disc production. The device includes a switching shaft, multiple air duct grinding heads, and a first and second disc. When the multiple air duct grinding heads are adjacent and tightly pressed together, they form a sealing ring. When both ends of the sealing ring are synchronously pressed against the first and second discs, a grinding chamber for closed grinding of the brake disc is formed, and the air duct grinding heads are in synchronous contact with the two discs. During grinding, the first and second discs maintain synchronous vibration through the transmission of the air duct grinding heads, and the grinding end of the air duct grinding heads reciprocates along the air duct for grinding. The device provided by this invention can perform targeted deburring grinding on specific brake discs, enabling continuous, automated, and dust-free grinding operations, solving the problems of inconvenient grinding, inadequate burr removal, and damage to the roughness of the brake surface in existing deburring grinding methods.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and specifically proposes a chamfering and deburring grinding device for brake disc production. Background Technology

[0002] Brake discs are important components in vehicle braking systems that work with brake pads to decelerate or brake. To prevent brake discs from overheating and failing during braking and to extend their service life, most existing brake discs have heat dissipation holes on the brake surface and air ducts on the annular sidewalls, so that heat can be dissipated in a timely manner through the heat dissipation holes and air ducts.

[0003] During brake disc manufacturing, burrs are prone to appear on the edge of the disc, especially in areas such as heat dissipation holes and air ducts. These burrs directly affect the assembly accuracy, braking performance, safety, and durability of the brake disc. In large-scale factory production, abrasive grinding and sandblasting are commonly used to remove burrs from the brake disc surface. However, these methods involve indiscriminate grinding of the brake disc surface, which requires a certain level of roughness. Vibratory grinding reduces the surface roughness, leading to decreased braking force, while sandblasting increases surface roughness, accelerating brake pad wear and affecting braking smoothness. The adverse effects of these grinding methods can be further amplified if the operation or abrasive selection is inappropriate. Furthermore, deburring air ducts, especially those with a large curvature, becomes more difficult, increasing the risk of incomplete cleaning. Additionally, sandblasting generates a large amount of dust, posing a significant health hazard. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a chamfering, deburring, and grinding device for brake disc production, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a chamfering and deburring grinding device for brake disc production, comprising a switching shaft, multiple air duct grinding heads, and a first disc and a second disc; the switching shaft includes a first shaft and a second shaft that rotate horizontally coaxially and synchronously and move axially relative to each other; a positioning head for coaxial placement of the brake disc is fixed at the shaft end of the first shaft, and an air duct for ventilation to all air ducts of the brake disc is provided between the first shaft and the positioning head; the multiple air duct grinding heads are circumferentially arranged around the switching shaft. The air ducts are evenly distributed and located between the first and second rotating shafts, and can extend into or move out of the brake disc synchronously. When multiple air duct grinding heads are close together, they form a sealing ring, and the grinding ends of the air duct grinding heads flexibly extend into the air ducts of the brake disc. The first and second discs are both connected and mounted on the first and second rotating shafts by key fitting along the axial direction with elastic force. Multiple sets of heat dissipation hole grinding heads for grinding burrs on the same side end face of the brake disc can be detachably installed on both discs. The first or second disc is set to vibrate axially.

[0006] When the two ends of the sealing ring are synchronously pressed against the first and second discs, a grinding chamber for sealing and grinding the brake disc is formed, and the air duct grinding head contacts the two discs synchronously. During grinding, the first and second discs maintain synchronous vibration through the transmission of the air duct grinding head, and the grinding end of the air duct grinding head moves back and forth along the air duct for grinding.

[0007] Preferably, it also includes a circular frame frame arranged between the first rotating shaft and the second rotating shaft, the circular frame frame having a circular frame coaxial with the switching rotating shaft; multiple air duct grinding heads are evenly distributed along the circumference of the circular frame, and multiple air duct grinding heads are all slidably mounted on the circular frame frame along the radial direction of the circular frame.

[0008] Preferably, the air duct grinding head includes a guide rod slidably mounted on a circular frame and an arc block fixed to one end of the guide rod, the arc block being located inside the circular frame; when the centers of the arc blocks of multiple air duct grinding heads coincide, the multiple arc blocks contact each other and form a sealing ring; when forming a grinding chamber, the first disc and the second disc are elastically pressed against the side wall of the arc block.

[0009] Preferably, the air duct grinding head further includes a slider that is slidably mounted on the inner side of the arc of the arc block along the radial direction of the arc block; spring plates are symmetrically hinged on the slider, and both spring plates are fixed on the arc block; a flexible rib is fixed on the slider; a flexible grinding head is fitted on the flexible rib, and the end of the flexible grinding head is clamped between the two spring plates.

[0010] Preferably, a transmission shaft is provided between the arc block and the slider. The transmission shaft is slidably mounted on the arc block along the axial direction. A spring sleeve is fitted and fixed on the transmission shaft and fixed on the arc block. The transmission shaft is provided with an annular conical surface and contacts the slider. When the first and second discs are in close contact with the sealing ring, both ends of the transmission shaft are in contact with the first and second discs. When the first and second discs vibrate synchronously, the transmission shaft vibrates synchronously along the axial direction of the arc block and drives the slider through the annular conical surface, thereby driving the flexible grinding head to reciprocate along the air duct for grinding.

[0011] Preferably, the flexible grinding head includes a rubber sleeve fitted on a flexible rib, with open and closed ends respectively. A retaining ring is fixed to the open end of the rubber sleeve, and a grinding brush is fixed on the rubber sleeve; the retaining ring is clamped between two spring plates.

[0012] Preferably, a drive ring is coaxially driven and installed on the circular frame frame, and the drive ring has multiple drive holes that correspond one-to-one with multiple air duct grinding heads. A movable pin that moves along the corresponding drive hole is fixed on the arc block.

[0013] Preferably, the positioning head includes an air plug fixed to one end of a first rotating shaft for insertion into the mounting cap on the brake disc; a retaining ring is provided at one end of the air plug connected to the first rotating shaft, and multiple positioning pins are fixed at the other end of the air plug for corresponding insertion into the fixing holes on the brake disc; the first rotating shaft is a tube structure and is in communication with the air plug, and multiple air ports for ventilation into the air duct are opened on the side wall of the air plug.

[0014] Preferably, the heat dissipation hole grinding head is divided into an abrasive section, a flexible section and a screw section in sequence along the axial direction, and the heat dissipation hole grinding head is threadedly connected to the first or second disc through the screw section.

[0015] The above technical solution has the following advantages or beneficial effects: This invention provides a chamfering and deburring grinding device for brake disc production. Through a heat dissipation hole grinding head detachably mounted on a first and second disc, each heat dissipation hole on the two brake surfaces of the brake disc can be ground and contacted accordingly. Multiple circumferentially distributed air duct grinding heads, driven by a drive ring, can flexibly extend into multiple air ducts. Vibration drive and indirect transmission are used to drive the heat dissipation hole grinding heads to vibrate and grind the corresponding heat dissipation hole burrs, and to drive the air duct grinding heads to perform full-coverage, flexible, and tight grinding and cleaning of the burrs within the air ducts. The grinding process is unified. First, it is controllable; it adopts a targeted deburring and grinding method, replacing the indiscriminate grinding and deburring method used in existing large-scale processing, avoiding adverse effects on the surface quality of the brake disc and brake surface, and solving the problems of inconvenient and incomplete burr removal in the air duct; it adopts a single-group synchronous grinding and multiple-group intermittent rotation switching method to realize automated and continuous operation of burr removal; in addition, the basic structure of the mounting grinding head naturally forms a closed grinding chamber, which can realize closed grinding, facilitate the thorough cleaning of burr residue in the air duct, and collect and discharge the metal powder generated by grinding, avoiding the health hazards of dust.

[0016] In summary, the device provided by the present invention can perform targeted deburring and polishing on specific brake discs, enabling continuous, automated, and dust-free polishing operations. It solves the problems of inconvenience, inadequate burr removal, and damage to the roughness of the brake surface that exist in existing deburring and polishing methods. Attached Figure Description

[0017] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0018] Figure 1 This is a three-dimensional structural diagram of a chamfering, deburring, and grinding device used in brake disc production.

[0019] Figure 2 This is a top view of a portion of the structure of a chamfering, deburring, and grinding device used in brake disc production.

[0020] Figure 3 yes Figure 2 Sectional view of AA.

[0021] Figure 4 It is a three-dimensional sectional view of the assembly of the air duct grinding head, drive ring and circular frame.

[0022] Figure 5 yes Figure 4 The diagram shows the working state of the assembly structure for deburring and polishing the air duct of the brake disc.

[0023] Figure 6 It is a three-dimensional structural diagram of the assembly of the No. 1 rotating shaft, the positioning head, the No. 1 disc, and the grinding head with heat dissipation holes.

[0024] Figure 7 It is a three-dimensional sectional view of the assembly of the No. 1 rotating shaft and the positioning head.

[0025] Figure 8 It is a three-dimensional structural diagram of the assembly of the No. 2 rotating shaft, the No. 2 disc, and the grinding head with heat dissipation holes.

[0026] Figure 9 This is a three-dimensional sectional view of the air duct grinding head.

[0027] Figure 10 It is a three-dimensional structural diagram of the arc block.

[0028] Figure 11 It is a three-dimensional sectional view of the assembly of the slider, flexible rib, and flexible grinding head.

[0029] Figure 12 This is a 3D structural diagram of the brake disc.

[0030] In the diagram: 1. Worktable; 11. Rotary seat No. 1; 12. Rotary shaft No. 1; 13. Positioning head; 131. Air plug; 132. Retaining ring; 133. Positioning pin; 134. Air port; 14. Rotary seat No. 2; 15. Rotary shaft No. 2; 16. Circular frame frame; 2. Air duct grinding head; 21. Guide rod; 22. Arc block; 221. Slide groove; 222. Moving pin; 23. Slider; 231. Notch groove; 24. Spring plate; 25. 26. Flexible rib; 261. Slot ring; 262. Rubber sleeve; 263. Grinding brush; 27. Transmission shaft; 271. Spring sleeve; 272. Annular conical surface; 3. Drive ring; 31. Drive hole; 4. No. 1 disc; 41. No. 1 spring; 5. No. 2 disc; 51. Bushing; 52. No. 2 spring; 6. Grinding head with heat dissipation hole; 7. Brake disc; 71. Mounting cap; 72. Fixing hole; 73. Air duct; 74. Heat dissipation hole. Detailed Implementation

[0031] 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.

[0032] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1and Figure 12 As shown, a deburring and polishing device for brake disc production, referred to simply as a deburring and polishing device, is used for processes such as... Figure 12 The burrs on the brake disc 7 shown are removed by grinding, using a dedicated deburring and grinding device for this brake disc 7. Figure 12 The diagram shows a brake disc 7 with air ducts 73 and heat dissipation holes 74. Multiple air ducts 73 are separated by air guide plates and are evenly distributed circumferentially. Multiple sets of heat dissipation holes 74 are evenly distributed circumferentially, extending through both sides of the brake disc 7. Each set contains three heat dissipation holes 74, distributed along the curve of the air guide plate. Additionally, a mounting cap 71 located at the center of the brake disc 7 has six evenly distributed fixing holes 72 for bolt fixing. In this invention, the deburring and polishing device can specifically deburr and polish the air ducts 73 and heat dissipation holes 74 of the brake disc 7 within a polishing chamber, ventilate and clean the polished air ducts 73, and collect and discharge the metal dust generated during polishing.

[0034] like Figure 1 and Figure 2 As shown, the deburring and grinding device includes a worktable 1. A first rotating seat 11 is fixed to the worktable 1 by bolts. A second rotating seat 14 is horizontally slidably mounted on the worktable 1 via a slide rail. A first rotating shaft 12 is horizontally rotatably mounted on the first rotating seat 11 via bearings. A second rotating shaft 15 is horizontally rotatably mounted on the second rotating seat 14 via bearings. The second rotating shaft 15 is coaxially arranged with the first rotating shaft 12, and the axial direction of the second rotating shaft 15 is in the same direction as the sliding direction of the second rotating seat 14. An electric hydraulic cylinder (not shown in the figure) is horizontally fixed to the worktable 1 by bolts, and the second rotating seat 14 is fixed to the output end of the electric hydraulic cylinder by bolts. Then, the electric hydraulic cylinder drives the second rotating seat 14 to slide, so as to realize the axial movement of the second rotating shaft 15 relative to the first rotating shaft 12. In this example, there is no connection between the first rotating shaft 12 and the second rotating shaft 15, but they need to maintain synchronous rotation and synchronous braking. According to existing technology, the following methods are available: the first rotating shaft 12 and the second rotating shaft 15 can achieve master-slave synchronous rotation through a transmission shaft and gear train, and an electromagnetic brake disc can be installed on the transmission shaft to achieve synchronous braking; or, the first rotating shaft 12 and the second rotating shaft 15 are both driven independently by motors, both of which are brake motors with their own brakes, and both motors are connected to the same signal controller. The signal controller issues start and brake signals in a unified manner to achieve synchronous rotation and synchronous braking between the first rotating shaft 12 and the second rotating shaft 15. It should be emphasized that both of the above methods can be selected and implemented based on existing technology. More specific structural composition and control logic will not be described here.

[0035] like Figure 3 , Figure 6 , Figure 7 and Figure 12 As shown, a positioning head 13 is fixed to the end of the first rotating shaft 12 to achieve coaxial positioning of the brake disc 7 based on the mounting cap 71. The positioning head 13 includes an air piston 131 welded to one end of the first rotating shaft 12 for insertion into the mounting cap 71 on the brake disc 7. The radius of the air piston 131 is slightly smaller than the inner diameter of the mounting cap 71. A retaining ring 132 is provided at the end of the air piston 131 connected to the first rotating shaft 12. The retaining ring 132 is an integrally formed structure on the air piston 131. Six positioning pins 133 are welded to the other end of the air piston 131 and can be inserted one by one into the six fixing holes 72 on the mounting cap 71. When placing the brake disc 7, the fixing holes 72 on the mounting cap 71 are aligned with the positioning pins 133 one by one. The positioning pins 133 are inserted into the corresponding fixing holes 72, so that the mounting cap 71 is fitted on the air piston 131 and abuts against the retaining ring 132, so that the brake disc 7 completes the center positioning, circumferential positioning and axial unilateral positioning.

[0036] like Figure 3 , Figure 7 and Figure 12 As shown, the first rotating shaft 12 is a tubular structure and is connected to the air plug 131. The side wall of the air plug 131 has eight circumferentially evenly distributed air ports 134 for ventilation into the air duct 73 of the brake disc 7. When the brake disc 7 is positioned on the positioning head 13, the air ports 134 are located in the inner cavity of the mounting cap 71. The shaft end of the first rotating shaft 12 can be connected to an external air pipe through a pipe joint, and the air pipe can be connected to an existing air pump to allow pressurized air to be introduced.

[0037] like Figure 3 , Figure 6 , Figure 8 and Figure 12 As shown, in order to remove and polish the burrs at the heat dissipation holes 74 on the two brake surfaces of the brake disc 7, a first disc 4 is coaxially slidably mounted on the first rotating shaft 12 via a key. Four first springs 41 are welded on the first disc 4. The four first springs 41 are evenly distributed around the first rotating shaft 12, and the other ends of the four first springs 41 are welded to the end face of the air piston 131 with a retaining ring 132. A second disc 5 is mounted on the second rotating shaft 15. A bushing 51 is coaxially welded to the end face of the second disc 5 facing away from the first disc 4. The bushing 51 is slidably mounted on the second rotating shaft 15 via a key. A second spring 52 is arranged inside the bushing 51, and the two ends of the second spring 52 are welded to the end face of the second disc 5 and the shaft end of the second rotating shaft 15, respectively. It should be noted that the brake disc 7 is designed and manufactured in a uniform manner, meaning that the distribution of multiple air ducts 73 and multiple sets of heat dissipation holes 74 is fixed relative to the distribution of the mounting cap 71 fixing holes 72. When the brake disc 7 is positioned on the positioning head 13, the standard is unified.

[0038] like Figure 6 , Figure 8 and Figure 12 As shown, eight sets of heat dissipation hole grinding heads 6 can be detachably installed on the facing surfaces of disk 4 and disk 5, with three grinding heads 6 per group. Each heat dissipation hole grinding head 6 on disk 4 or disk 5 can be aligned and fitted with each heat dissipation hole 74 on the same braking surface of the brake disc 7. The heat dissipation hole grinding heads 6 can be custom-made directly from the market according to the size of the heat dissipation hole 74. The heat dissipation hole grinding head 6 is divided into an abrasive section, a flexible section, and a screw section along the axial direction. The abrasive section is cylindrical, and its radius is slightly larger than that of the heat dissipation hole 74. It is only used to remove burrs from the opening of the heat dissipation hole 74. The abrasive section can be reasonably selected according to the available abrasive. The flexible section is made of rubber and is partially embedded in the abrasive section. The flexible section can perform axial compression buffering. The heat dissipation hole grinding head 6 is threadedly connected to disk 4 or disk 5 by the screw section. The exposed length of the heat dissipation hole grinding head 6 can be adjusted by controlling the screw depth. When the abrasive section is worn but still usable, it can be compensated for.

[0039] like Figure 2 , Figure 3 and Figure 4 As shown, a circular frame frame 16 is bolted to the worktable 1. The circular frame frame 16 is arranged between the first rotating shaft 12 and the second rotating shaft 15, and the first disc 4 and the second disc 5 are also distributed on both sides of the circular frame frame 16. The circular frame frame 16 is provided with a circular frame coaxial with the first rotating shaft 12. Eight air duct grinding heads 2 are mounted on the circular frame frame 16 for removing and polishing the burrs inside the air duct 73 of the brake disc 7. The eight air duct grinding heads 2 are evenly distributed circumferentially within the circular frame. It should be noted that... Figure 12 The total number of air ducts 73 on the brake disc 7 shown is an integer multiple of the eight air duct grinding heads 2. In actual grinding, it is only necessary to complete multiple switching grindings of the corresponding multiple number of times. The first rotating shaft 12 and the second rotating shaft 15 together form a switching shaft that can rotate and brake synchronously. In this embodiment, the first rotating shaft 12 can be used as the drive shaft. The motor connected to the first rotating shaft 12 can be a servo motor. The single switching angle of the servo motor can be based on the equal division angle of the air ducts 73. Then, the first rotating shaft 12 can drive the brake disc 7 to rotate and switch the position of the air ducts 73 through the positioning head 13.

[0040] like Figure 4 , Figure 5 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the air duct grinding head 2 includes a guide rod 21 that is radially slidably mounted on the circular frame frame 16. The guide rod 21 has a square cross-section. An arc block 22 is welded to one end of the guide rod 21 extending into the circular frame. The inner arc of the arc block 22 faces the center of the circular frame. A groove 221 is provided on the arc block 22. The guide rod 21 and the groove 221 are both centrally arranged relative to the two ends of the arc block 22, and the guide rod 21 and the groove 221 are located on the outer arc edge and inner arc edge of the arc block 22, respectively. At the edge, the guiding directions of both the guide rod 21 and the slide groove are located on the same radial direction of the arc block 22; a slider 23 is slidably installed in the slide groove 221, and two spring plates 24 are hinged on the slider 23. The two spring plates 24 are symmetrically distributed on both sides of the slider 23 about the central axis of the arc block 22, and the relatively far ends of the two spring plates 24 are fixed to the inner arc wall of the arc block 22 by rivets; a flexible rib is welded in the center on the end face of the slider 23 facing away from the arc block 22. 25. Flexible rib 25 is a steel wire; a flexible grinding head 26 is fitted on the flexible rib 25; the flexible grinding head 26 includes a rubber sleeve 262 fitted on the flexible rib 25. The rubber sleeve 262 is made of rubber material, and its two ends are respectively open and closed. A retaining ring 261 is fixed to the open end of the rubber sleeve 262. A grinding brush 263 is glued and fixed on the rubber sleeve 262. Based on the existing technology, the grinding brush 263 can be made of flexible materials such as nylon filaments and sponge as the base material and coated with abrasive. The outer wall of the retaining ring 261 has an annular retaining groove. The relatively close ends of the two spring plates 24 are clamped together in the retaining groove of the retaining ring 261, so as to quickly fit and fix the flexible grinding head 26 and facilitate quick disassembly. As a consumable, the flexible grinding head 26, like the heat dissipation hole grinding head 6, can also be mass-produced on the market. The length of the grinding brush 263 is greater than the curve length of the air duct 73, and the dimensions of the grinding brush 263 are adapted to the pores of the air duct 73. In its natural state, the flexible rib 25 has sufficient elastic stiffness, so that the flexible grinding head 26 is basically in a taut state.

[0041] like Figure 3 , Figure 4 , Figure 5 and Figure 12As shown, in order to drive the eight air duct grinding heads 2 to simultaneously extend into or move out of the air duct 73 of the brake disc 7, a slewing bearing is welded to the end face of the circular frame 16 facing the second circular disc 5. The slewing bearing is coaxially mounted with the circular frame, and a drive ring 3 is welded to the rotating part of the slewing bearing. The drive ring 3 has eight drive holes 31 distributed circumferentially, corresponding to the eight air duct grinding heads 2. The drive holes 31 are extension holes. A moving pin 222 that moves along the corresponding drive hole 31 is welded to the arc block 22. In this embodiment, at least one of the following two driving methods can be selected to drive the drive. Ring 3 rotates; Method 1: A rotary bearing with a built-in gear ring can be selected, and an electric hydraulic cylinder can be fixedly installed on the circular frame 16. The output end of the electric hydraulic cylinder can be fixed with a rack, and the rack meshes with the gear ring; Method 2: An electric hydraulic cylinder can be fixedly installed on the circular frame 16, and a connecting rod can be hinged between the output end of the electric hydraulic cylinder and the drive ring 3; It should be noted that the specific structure of the above driving methods is not shown in the attached drawings; When the drive ring 3 is driven to rotate by one of the driving methods, the moving pin 222 moves along the drive hole 31 to drive the air duct grinding head 2 to slide radially in the circular frame.

[0042] After the brake disc 7 is positioned on the positioning head 13, the movable second rotating seat 14 moves the second disc 5 closer to the first disc 4. Under the elastic force of the first spring 41 and the second spring 52, each heat dissipation hole grinding head 6 on the first disc 4 and the second disc 5 abuts against the corresponding heat dissipation hole 74 on the brake surface of the brake disc 7 on the same side. Driven by the drive ring 3, all eight air duct grinding heads 2 pass between the first disc 4 and the second disc 5 and move synchronously towards the center of the circular frame. As the eight grinding heads 2 move closer to the center of the circular frame, the centers of the eight arc blocks 22 coincide with the center of the circular frame, and the ends of the eight arc blocks 22 are in close contact with each other, forming a sealing ring. During the movement of the grinding heads 2, the taut flexible grinding head 26 is aligned with the port of the air duct 73, and the flexible grinding head 26 extends completely into the air duct 73 along the curve of the air duct 73 via the flexible rib 25. At this time, the eight arc blocks 22 forming the sealing ring are pressed tightly against the first... Between disc 4 and disc 5, in this invention, disc 4 and disc 5 serve as the basis for the burr removal and grinding structure of the heat dissipation holes 74 on both sides of the brake disc 7, and the sealing ring serves as the basis for the burr removal and grinding structure of the air duct 73 on the side wall of the brake disc 7. Together, they constitute a grinding chamber capable of sealing and grinding the brake disc 7. The brake disc 7 is located inside the grinding chamber. During the grinding process, pressurized air can be introduced into each brake disc 7 from the air port 134 through the first rotating shaft 12 and the air plug 131. Within the air duct 73, metal powder generated during deburring can be blown into the grinding chamber. An opening can be made on the first disc 4 or the second disc 5 and connected to an air pipe. The air pipe is connected to an external exhaust fan, which can further extract the metal powder through airflow and transport it to the existing dust removal chamber. The entire process can basically achieve dust-free grinding, solving the problem of large amounts of dust when deburring and grinding the brake disc 7, and minimizing the potential harm of dust to human health.

[0043] like Figure 3 , Figure 4 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, in this invention, grinding is performed by vibration drive. Specifically, two identical vibration motors controlled by a unified signal are bolted to the second disc 5. The two vibration motors are symmetrically arranged about the second rotating shaft 15, and the vibration direction of the installed vibration motors is arranged along the axial direction of the second rotating shaft 15. Vibration motors with suitable assembly size and amplitude range can be selected. The cooperation of the two vibration motors ensures the symmetry of the force on the second disc 5 and provides sufficient vibration driving force. When the two vibration motors are started, under the cooperation of the second spring 52, the second disc... The disc 5 reciprocates on the second rotating shaft 15. To achieve synchronous vibration of the first disc 4 with the second disc 5, and to synchronously drive the eight air duct grinding heads 2 for grinding, the air duct grinding head 2 is also equipped with a transmission shaft 27. The slide groove 221 is provided with a guide groove along the axial direction of the arc block 22. The slider 23 has a U-shaped notch 231 at one end near the arc block 22. The transmission shaft 27 slides in conjunction with the guide groove of the slide groove 221. The transmission shaft 27 is located in the notch 231. A spring sleeve 271 is welded onto the transmission shaft 27. The spring sleeve 271 is fixed to the arc block 22 by screws. The spring sleeve 271 is made of spring steel. The material, the transmission shaft 27 is provided with an annular conical surface 272. Under the restriction of the slider 23 by the two spring plates 24, the transmission shaft 27 contacts the notch 231. It should be noted that the radius of the arc of the notch 231 is the same as the radius of the non-annular conical surface 272 section of the transmission shaft 27; the two ends of the transmission shaft 27 extend relative to the arc blocks 22. When the first disk 4 and the second disk 5 are both in contact with the sealing ring formed by the arc blocks 22, the two ends of the transmission shaft 27 respectively touch the first disk 4 and the second disk 5. Moreover, the eight transmission shafts 27 are evenly distributed circumferentially with the air duct grinding head 2, ensuring the uniformity of the vibration driving force transmission distribution; when When the second disk 5 vibrates, it will push the transmission shaft 27, which in turn pushes the first disk 4. When the second disk 5 slides away from the transmission shaft 27, the transmission shaft 27 automatically resets under the elastic force of the spring sleeve 271, while the first disk 4 automatically resets under the elastic force of the four first springs 41. Then, under the transmission of the transmission shaft 27, the first disk 4 and the second disk 5 vibrate synchronously. At the same time, when the transmission shaft 27 slides back and forth, the annular conical surface 272 moves in and out of the notch groove 231. With the cooperation of the two spring plates 24, the slider 23 slides back and forth along the slide groove 221.

[0044] It is worth noting that, in order not to interfere with the reciprocating vibration of disk 4 and disk 5, rubber pads are covered on the contact surfaces of disks 4 and 5 that contact the arc block 22. The rubber pads can be self-compressed with vibration. In addition, in order to facilitate the smooth passage of the air duct grinding head 2 through disks 4 and 5 when it moves radially along the circular frame 16, the edges of disks 4 and 5 are rounded.

[0045] This invention provides a chamfering and deburring grinding device for brake disc production, used for targeted deburring and grinding of the heat dissipation holes 74 and air ducts 73 of a brake disc 7 with a specific structure. The specific processing procedure is as follows.

[0046] First, the brake disc 7 is positioned on the positioning head 13. Then, the second rotating seat 14 is moved so that the heat dissipation hole grinding heads 6 on the first disc 4 and the second disc 5 are both in contact with the corresponding heat dissipation holes 74 on the brake surface of the brake disc 7 on the same side. Next, the eight air duct grinding heads 2 are driven by the drive ring 3 to extend into the corresponding air ducts 73. During grinding, the airflow in the grinding chamber is kept circulating. The two vibration motors are started, and the first disc 4 and the second disc 5 vibrate synchronously. During vibration, the heat dissipation hole grinding heads 6 vibrate back and forth, thereby vibrating and cleaning the burrs at the heat dissipation holes 74. At the same time, the sliders 23 of the eight air duct grinding heads 2 slide back and forth in the radial direction of the circular frame, so that the flexible grinding heads 26 move back and forth along the direction of the air ducts 73 and perform flexible and close grinding, effectively removing the entire Burrs inside the air duct 73; after a set of air ducts 73 has been polished, the drive ring 3 starts again and drives eight air duct grinding heads 2 to move out of the air ducts 73 synchronously. The flexible grinding head 26 after being moved out remains taut under the action of the rigidity of the flexible rib 25. Then, the first rotating shaft 12 and the second rotating shaft 15 rotate synchronously, driving the brake disc 7 to rotate and switch, so that the next set of air ducts 73 is aligned with the air duct grinding head 2. Then, the air duct grinding head 2 is extended into the corresponding air duct 73 again and polished again. Then, through multiple intermittent rotation switching, the deburring and polishing of all air ducts 73 can be completed. The polishing is carried out in a closed polishing chamber, and the metal dust generated by the polishing is concentrated and discharged to the outside. After the polishing is completed, the air duct grinding head 2 is removed, the second disc 5 is removed, and the brake disc 7 is removed from the positioning head 13.

[0047] In this invention, the heat dissipation hole grinding head 6, detachably mounted on the first disc 4 and the second disc 5, can correspondingly grind and contact each heat dissipation hole 74 on the two braking surfaces of the brake disc 7. Multiple circumferentially distributed air duct grinding heads 2, driven by the drive ring 3, can flexibly extend into multiple air ducts 73. Vibration drive and indirect transmission are used to drive the heat dissipation hole grinding head 6 to vibrate and grind the burrs on the corresponding heat dissipation hole 74, and to drive the air duct grinding head 2 to perform full-coverage, flexible, and tight grinding and cleaning of the burrs within the air ducts 73. The grinding process is uniform and controllable. This targeted deburring method replaces the indiscriminate grinding method used in existing large-scale processing, avoiding uneven surface quality of the brake disc 7's braking surface. This invention addresses the problems of inconvenient and incomplete burr removal within the air duct 73. By employing a single-group synchronous grinding method and multiple groups of intermittent rotation switching, it achieves automated and continuous burr removal. Furthermore, the base structure for mounting the grinding head naturally forms a closed grinding chamber, enabling enclosed grinding and facilitating thorough cleaning of burr residue within the air duct 73. It also allows for the collection and discharge of metal powder generated during grinding, avoiding the health hazards of dust. In summary, the device provided by this invention can perform targeted deburring and grinding on specific brake discs 7, enabling continuous, automated, and dust-free grinding operations. It solves the problems of inconvenient grinding, incomplete burr removal, and damage to the roughness of the brake surface that exist in existing deburring and grinding methods.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A chamfer deburring polishing device for brake disc production, characterized in that, The application relates to a brake disc polishing device. The device comprises a switching shaft, a plurality of air channel grinding heads, a first disc and a second disc. The switching shaft comprises a first shaft and a second shaft which are coaxially horizontally synchronously rotated and axially oppositely moved; a positioning head for coaxially placing a brake disc is fixed at the end of the first shaft, and an air channel for ventilating all the air channels of the brake disc is arranged through the first shaft and the positioning head; The plurality of air channel grinding heads are evenly distributed around the switching shaft and located between the first shaft and the second shaft, and can synchronously extend to or move out of the air channels of the brake disc; when the plurality of air channel grinding heads are adjacently and closely attached, a sealing ring is formed, and the polishing end of the air channel grinding head is flexibly extended into the air channel of the brake disc; The first disc and the second disc are respectively axially elastically connected to the first shaft and the second shaft through key matching; a plurality of groups of heat dissipation hole grinding heads for polishing burrs on the heat dissipation holes on the same side surface of the brake disc are detachably mounted on the two discs; the first disc or the second disc is arranged to axially vibrate; 2. The chamfering, deburring and polishing device for brake disc production according to claim 1, characterized in that: When the two ends of the sealing ring are synchronously attached to the first disc and the second disc, a polishing cabin for closed polishing of the brake disc is formed, and the air channel grinding heads are synchronously contacted with the two discs; during polishing, the first disc and the second disc are synchronously vibrated through the air channel grinding heads, and the polishing end of the air channel grinding head reciprocally moves along the air channel for polishing.

3. The chamfering, deburring and polishing device for brake disc production according to claim 2, characterized in that: The device further comprises a circular frame bracket arranged between the first shaft and the second shaft, and a circular frame coaxial with the switching shaft is arranged on the circular frame bracket; the plurality of air channel grinding heads are evenly distributed around the circular frame, and the plurality of air channel grinding heads are radially slidably mounted on the circular frame bracket.

4. The chamfering, deburring and polishing device for brake disc production according to claim 3, characterized in that: The air channel grinding head comprises a guide rod slidably mounted on the circular frame bracket and a circular arc block fixed at one end of the guide rod, and the circular arc block is located in the circular frame; when the centers of the plurality of circular arc blocks coincide, the plurality of circular arc blocks are contacted with each other and form a sealing ring; when the polishing cabin is formed, the first disc and the second disc are elastically attached to the side wall of the circular arc block.

5. The chamfering, deburring and polishing device for brake disc production according to claim 4, characterized in that: The air channel grinding head further comprises a sliding block slidably mounted on the inner side of the circular arc of the circular arc block; spring sheets are symmetrically hinged on the sliding block, and the two spring sheets are fixed on the circular arc block; a flexible tendon is fixed on the sliding block; a flexible grinding head is sleeved on the flexible tendon, and the end of the flexible grinding head is clamped between the two spring sheets.

6. The chamfering, deburring and polishing device for brake disc production according to claim 4, characterized in that: A transmission shaft is arranged between the circular arc block and the sliding block, the transmission shaft is axially slidably mounted on the circular arc block, a spring sheet sleeve is sleeved and fixed on the transmission shaft, the spring sheet sleeve is fixed on the circular arc block, an annular taper surface is arranged on the transmission shaft, the transmission shaft is contacted with the sliding block; when the first disc and the second disc are attached to the sealing ring, the two ends of the transmission shaft are contacted with the first disc and the second disc; when the first disc and the second disc synchronously vibrate, the transmission shaft synchronously vibrates along the circular arc block in the axial direction, and drives the sliding block through the annular taper surface, and drives the flexible grinding head to reciprocally polish along the air channel.

7. The chamfering, deburring and polishing device for brake disc production according to claim 3, characterized in that: The flexible grinding head comprises a rubber sleeve sleeved on the flexible tendon, the two ends of the rubber sleeve are respectively arranged as an open end and a closed end, a clamping groove ring is fixed on the open end of the rubber sleeve, and a grinding brush is fixed on the rubber sleeve; the clamping groove ring is clamped between the two spring sheets. A driving ring is coaxially and drivingly mounted on the circular frame bracket, a plurality of driving holes corresponding to the plurality of air channel grinding heads are arranged in the driving ring, and a moving pin moving along the corresponding driving hole is fixed on the circular arc block.

8. The chamfering, deburring and polishing device for brake disc production according to claim 1, characterized in that: The positioning head comprises an air plug column fixed at one end of a first rotating shaft for plugging into the inside of a mounting cap on the brake disc; the air plug column is provided with a check ring at the end connected with the first rotating shaft, and the other end of the air plug column is fixed with a plurality of positioning pins for corresponding insertion into fixing holes on the brake disc; the first rotating shaft is in a tube structure and penetrates through the air plug column, and a plurality of air ports for ventilation into the air duct are formed in the sidewall of the air plug column.

9. The chamfering, deburring and polishing device for brake disc production according to claim 1, characterized in that: The heat dissipation hole grinding head is sequentially divided into an abrasive section, a flexible section and a screw section in the axial direction, and the heat dissipation hole grinding head is threadedly connected to the first disc or the second disc through the screw section.

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