Double-sided polishing and deburring device for brake disc

Abstract

The invention relates to the field of grinding and polishing, in particular to a brake disc double-face grinding and deburring device which comprises a lifting system and a rotating main shaft system capable of horizontally moving, a disc body carrier is arranged at the lifting output end of the lifting system, and an inner positioning clamp assembly is arranged at the rotating output end of the rotating main shaft system. A double-face polishing assembly and a translation guide rail assembly are further arranged on the side of the disc body carrier, the double-face polishing assembly comprises two roller polishing brushes which can be close to each other oppositely, and the double-face polishing assembly is connected with the disc body carrier through a long connecting rod. The double faces of the brake disc are synchronously ground and polished through the drum-type polishing brush, and compared with a traditional mode, the machining efficiency is greatly improved; the situation that the polishing assembly collides with the clamp assembly is avoided through pure mechanical structural relevance, and the clamping efficiency of the brake disc is greatly improved through the inner supporting type positioning clamp.

Description

Technical Field

[0001] The present invention relates to the field of grinding and polishing, and particularly to a device for double-sided grinding and deburring of brake discs. Background Art

[0002] The quality and performance of brake discs are crucial for vehicle braking safety. During the processing of brake discs, such as after casting, forging, or machining (such as turning, drilling, etc.), burrs will be generated on their surfaces and edges. If these burrs are not removed, they will have many adverse effects on the installation and use of brake discs.

[0003] From the perspective of installation, a brake disc with burrs may not be correctly installed into the vehicle's braking system. The burrs will affect the fit between the brake disc and components such as the wheel hub, resulting in uneven installation and possible vibrations and noises during vehicle driving.

[0004] Regarding the performance of brake discs during use, burrs will affect the contact between the brake pads and the brake disc. During braking, uneven contact may lead to a decrease in braking effect, presenting safety hazards such as unstable braking and longer braking distances. Moreover, the presence of burrs may accelerate the wear of the brake pads, shorten the service life of the brake pads, and increase the vehicle's operating costs.

[0005] Currently, for deburring, mechanical grinding is one of the most common methods. By using a special grinding machine, the brake disc is installed on the workbench, and the surface and edge of the brake disc are ground with a high-speed rotating grinding wheel. However, the traditional grinding method can only complete the grinding of one side of the disc at a time, and secondary clamping is required to complete the grinding of the other side. At the same time, the fixtures used in traditional grinding mostly match conventional brake discs (i.e., the mounting hole diameter is vehicle-specific, and the disc body and hub are integrally formed). For some modified brake discs, the disc body and hub are of a split structure, and the vehicle-specific aluminum alloy hub needs to be installed after the disc surface is ground. For such brake discs, the fixtures of traditional grinding machines do not have universality. Summary of the Invention

[0006] Based on this, in view of the problems in the prior art, it is necessary to provide a device for double-sided grinding and deburring of brake discs to perform efficient deburring and grinding operations on the double surfaces of brake discs.

[0007] To solve the problems in the prior art, the technical solution adopted by the present invention is as follows: A double-sided grinding and deburring device for brake discs, comprising a lifting system and a rotating main shaft system capable of horizontal movement. A disc carrier is arranged on the lifting output end of the lifting system, and an inner positioning fixture assembly is arranged on the rotating output end of the rotating main shaft system. A double-sided polishing assembly and a translation guide rail assembly are also arranged beside the disc carrier. The double-sided polishing assembly is movably arranged on the translation guide rail assembly. The double-sided polishing assembly includes two roller polishing brushes capable of approaching each other. The two roller polishing brushes are respectively located on both sides of the brake disc. The translation guide rail assembly is fixedly arranged in a horizontal state and is perpendicular to the rotating main shaft system. The double-sided polishing assembly is connected to the disc carrier by a long connecting rod.

[0008] Further, the disc carrier includes a rectangular base, two support rollers arranged inside the rectangular base, two guiding columns arranged inside the rectangular base, and two pairs of centering elastic pieces arranged at both ends of the rectangular base. A receiving through groove extending downward from the top is formed on the rectangular base. V-shaped avoidance notches with the same shape and extending downward are formed on both side walls of the rectangular base. The two support rollers are respectively pivotally connected to the bottoms of both ends of the receiving through groove. A rotating mechanism for driving one of the support rollers to rotate is also arranged on the rectangular base. The two guiding columns are respectively fixedly arranged on the upper halves of both ends of the receiving through groove. The upper end of each guiding column extends upward. Oblique angle portions for guiding the brake disc to slide downward are formed on the inner sides of the upper ends of the two guiding columns. The two pairs of centering elastic pieces are respectively arranged at the tops of both ends of the rectangular base. The number of each pair of centering elastic pieces is two. The lower end of each centering elastic piece is fixedly connected to the inner wall of the receiving through groove. The upper half of each centering elastic piece is of an arc-shaped plate structure, and the arc tops of each pair of centering elastic pieces face each other. The two guiding columns are respectively arranged at the middle positions of the two pairs of centering elastic pieces.

[0009] Further, the rotating mechanism includes a rotating motor, a synchronous belt, and two synchronous wheels connected by the synchronous belt. The rotating motor is fixedly arranged at one end of the rectangular base. The central axis of one of the support rollers close to the rotating motor extends to the outside of the rectangular base. The two synchronous wheels are respectively arranged on the output shaft of the rotating motor and the extended end of the corresponding support roller. A plurality of bearings for pivotally connecting the support rollers are embedded on both side walls of the rectangular base.

[0010] Further, the inner positioning fixture assembly includes a hollow cylindrical tube, a threaded collar movably disposed inside the hollow cylindrical tube, a long lead screw coaxially disposed inside the hollow cylindrical tube, a drive motor fixedly disposed at one end of the hollow cylindrical tube, a plurality of X-shaped linkages uniformly distributed on the outer side of the hollow cylindrical tube, and a plurality of positioning rods respectively disposed on the outer sides of the X-shaped linkages. A plurality of strip-shaped through holes uniformly distributed in the circumferential direction are formed on the tube wall of the hollow cylindrical tube. One hinge shaft is fixedly disposed at one end of each strip-shaped through hole. A plurality of first hinge seats uniformly distributed in the circumferential direction are formed on the outer wall of the threaded collar. Each first hinge seat is slidably inserted into the corresponding strip-shaped through hole. Both ends of each X-shaped linkage close to the hollow cylindrical tube are respectively connected to the corresponding hinge shaft and the first hinge seat. A second hinge seat is disposed at the inner end of each positioning rod, and a strip-shaped hole slide rail is formed at the other end. Both ends of the X-shaped linkage away from the hollow cylindrical tube are respectively connected to the second hinge seat and the strip-shaped hole slide rail. The drive motor is fixedly connected to one end of the long lead screw, and the long lead screw is threadedly connected to the threaded collar.

[0011] Further, the outer side wall of the positioning rod is of an arc surface structure. An inner support slider is slidably nested on the outer side of the positioning rod. Strip-shaped sliding grooves for slidably fitting the inner support slider are formed on both side walls of the positioning rod. A locking bolt for pressing against the outer wall of the positioning rod is screwed on the inner support slider.

[0012] Further, an umbrella-shaped cone head is fixedly connected to one end of the hollow cylindrical tube facing the brake pad. Bearing end caps for axially connecting both ends of the long lead screw are fixedly connected to both ends of the hollow cylindrical tube. A connecting column for sleeving the umbrella-shaped cone head is formed on the outer side of one of the bearing end caps. A bolt hole for fixedly connecting to the connecting column is formed at the center of the umbrella-shaped cone head. A connecting handle for connecting to the rotary spindle system is fixedly connected to the outer side of the other bearing end cap. The connecting handle is coaxially arranged with the hollow cylindrical tube.

[0013] Further, the double-sided polishing assembly further includes an opposing jaw assembly and two polishing motors respectively disposed at the two jaw ends of the opposing jaw assembly. The output shaft of each polishing motor is connected to the corresponding roller polishing brush. The opposing jaw assembly is connected to the translation guide rail assembly through a sliding seat. The upper end of the long connecting rod is connected to the bottom of the sliding seat, and the lower end is connected to one side of the disc carrier.

[0014] Further, the translation guide rail assembly includes a rectangular slide rail structure composed of two guide rods and two fasteners. First linear bearings are respectively installed at both ends of the sliding seat. The two first linear bearings are respectively slidably sleeved on the two guide rods.

[0015] Further, a sliding crossbeam is slidably arranged on the two guide rods. Second linear bearings for cooperating with the guide rods are installed at both ends of the sliding crossbeam. An adjusting screw rod is pivotally connected to the middle of the sliding crossbeam, and a flange screw sleeve for cooperating with the adjusting screw rod is arranged on the sliding seat.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: First, the present invention uses a drum-type polishing brush to synchronously polish and grind both sides of the brake disc, greatly improving the processing efficiency compared with the traditional method. Second, there is a purely mechanical structural correlation between the polishing component and the carrier of the present invention, ensuring the synchronous correlation of their movements and avoiding the situation where the polishing component collides with the fixture component. Third, the present invention uses an inner support type positioning fixture to quickly clamp the disc body of the split brake disc, greatly improving the clamping efficiency of the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the working state of the present invention Figure 1 ; Figure 2 is a three-dimensional structural schematic diagram of the working state of the present invention Figure 2 ; Figure 3 is Figure 2 a planar schematic diagram of Figure 4 is a three-dimensional structural schematic diagram of the disc carrier of the present invention; Figure 5 is Figure 2 a top view schematic diagram of Figure 6 is a three-dimensional structural schematic diagram of the inner positioning fixture component of the present invention clamping the brake disc; Figure 7 is a three-dimensional structural schematic diagram of the inner positioning fixture component of the present invention; Figure 8 is a planar cross-sectional schematic diagram of the inner positioning fixture component of the present invention; Figure 9 is a schematic diagram of the grinding position relationship between the double-sided polishing component and the brake disc of the present invention; Figure 10 is Figure 7 a magnified schematic diagram of the structure at A in The reference numerals in the figure are: 1 - disc carrier; 2 - inner positioning fixture assembly; 3 - double-sided polishing assembly; 4 - translation guide rail assembly; 5 - roller polishing brush; 6 - brake disc; 7 - arc-shaped opening; 8 - connecting ear; 9 - long connecting rod; 10 - rectangular base; 11 - support roller; 12 - guiding column; 13 - centering elastic piece; 14 - accommodating through groove; 15 - V-shaped avoidance notch; 16 - beveled corner; 17 - rotating motor; 18 - bearing; 19 - hollow cylindrical tube; 20 - threaded collar; 21 - long lead screw; 22 - driving motor; 23 - X-shaped connecting rod; 24 - positioning rod; 25 - strip-shaped through hole; 26 - hinge shaft; 27 - first hinge seat; 28 - second hinge seat; 29 - strip-shaped hole slide rail; 30 - inner support slider; 31 - strip-shaped chute; 32 - locking bolt; 33 - umbrella-shaped cone head; 34 - bearing end cover; 35 - connecting column; 36 - bolt hole; 37 - connecting handle; 38 - opposite clamping jaw assembly; 39 - grinding motor; 40 - slide base; 41 - guide rod; 42 - fastener; 43 - first linear bearing; 44 - sliding cross beam; 45 - second linear bearing; 46 - adjusting screw; 47 - flange screw sleeve. Detailed implementation mode

[0018] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation modes.

[0019] Refer to Figures 1 to 10 As shown, a device for double-sided grinding and deburring of a brake disc includes a lifting system and a rotating main shaft system capable of horizontal movement. It is characterized in that a disc carrier 1 is arranged on the lifting output end of the lifting system, and an inner positioning fixture assembly 2 is arranged on the rotating output end of the rotating main shaft system. A double-sided polishing assembly 3 and a translation guide rail assembly 4 are also arranged beside the disc carrier 1. The double-sided polishing assembly 3 is movably arranged on the translation guide rail assembly 4. The double-sided polishing assembly 3 includes two roller polishing brushes 5 capable of approaching each other. The two roller polishing brushes 5 are respectively located on both sides of the brake disc 6. The translation guide rail assembly 4 is fixedly arranged in a horizontal state and is perpendicular to the rotating main shaft system. The double-sided polishing assembly 3 is connected to the disc carrier 1 by a long connecting rod 9.

[0020] The device can place the brake disc 6 into the disc carrier 1 by mechanical feeding or manual feeding. Then, the main shaft system rotates and drives the inner positioning fixture assembly 2 to move towards the disc carrier 1 until the inner positioning fixture assembly 2 penetrates into the central hole of the brake disc 6 and starts to act to position, support and fix the brake disc 6. Then, the lifting system drives the disc carrier 1 to descend, so that the brake disc 6 is separated from the disc carrier 1. During the descent of the disc carrier 1, the double-sided polishing assembly 3 is pulled by the long connecting rod 9 to move. The pulled double-sided polishing assembly 3 moves horizontally on the translation guide rail assembly 4 towards and close to the brake disc 6 until the two roller polishing brushes 5 reach both sides of the brake disc 6. Then, the double-sided polishing assembly 3 acts to drive the two roller polishing brushes 5 to approach each other until they are pressed against the surfaces of the brake disc 6. Subsequently, the main shaft rotation system drives the brake disc 6 to rotate at high speed, cooperating with the roller polishing brushes 5 that also rotate at high speed to achieve the effect of double-sided synchronous grinding and polishing of the brake disc 6. Figure 1 and Figure 2 In, the vertical arrow indicates the movement direction of the lifting system driving the disc carrier 1, and the horizontal arrow indicates the movement direction of the rotating main shaft system driving the inner positioning fixture assembly 2.

[0021] In order to facilitate the easier entry of the brake disc 6 into the disc carrier 1, the following features are specifically set: The disc carrier 1 includes a rectangular base 10, two support rollers 11 arranged inside the rectangular base 10, two guiding columns 12 arranged inside the rectangular base 10, and two pairs of centering elastic pieces 13 arranged at both ends of the rectangular base 10. A receiving through groove 14 extending downward from the top is formed on the rectangular base 10. V-shaped avoidance notches 15 with the same shape and extending downward are formed on both side walls of the rectangular base 10. The two support rollers 11 are respectively pivotally connected to the bottom ends of both ends of the receiving through groove 14. A rotating mechanism for driving one of the support rollers 11 to rotate is further arranged on the rectangular base 10. The two guiding columns 12 are respectively fixedly arranged on the upper half parts of both ends of the receiving through groove 14. The upper end of each guiding column 12 extends upward. Oblique angle parts 16 for guiding the downward sliding of the brake disc 6 are formed on the inner sides of the upper ends of the two guiding columns 12. The two pairs of centering elastic pieces 13 are respectively arranged at the top of both ends of the rectangular base 10. The number of each pair of centering elastic pieces 13 is two. The lower end of each centering elastic piece 13 is fixedly connected to the inner wall of the receiving through groove 14. The upper half part of each centering elastic piece 13 is in an arc-shaped plate structure, and the arc tops of each pair of centering elastic pieces 13 face each other. The two guiding columns 12 are respectively arranged at the middle positions of the two pairs of centering elastic pieces 13.

[0022] When the brake disc 6 enters the receiving through - slot 14 of the rectangular base 10, the outer edge of the brake disc 6 is blocked and limited by the guiding columns 12 on both sides. The distance between the two guiding columns 12 is greater than the diameter of the brake disc 6 to facilitate the smooth entry of the brake disc 6. The beveled parts 16 at the tops of the guiding columns 12 make it easier for the brake disc in contact with them to smoothly enter between the two. During the process of the brake disc 6 entering the rectangular base 10 downward, the brake disc 6 is elastically resisted and limited by two pairs of middle - elastic pieces 13. During the entry of the brake disc 6, the middle - elastic pieces 13 always keep in contact with its disc surface until the bottom of the brake disc 6 is finally placed on two support rollers 11. The outer layer of the support rollers 11 is an anti - slip layer, so that the rotating mechanism can smoothly drive the rotation of the brake disc 6 through the rotation of the support rollers 11. During the rotation of the brake disc 6, through the elastic contact of the two pairs of middle - elastic pieces 13, it is ensured that the brake disc 6 is located in the middle position of the rectangular base 10 after rotating several circles.

[0023] In order to facilitate driving the rotation of the brake disc 6 through the rotation of the support rollers 11, so as to adjust the position of the brake disc 6 for the subsequent inner positioning fixture assembly 2 to smoothly clamp the brake disc 6, the following features are specifically set: The rotating mechanism includes a rotating motor 17, a synchronous belt, and two synchronous wheels connected by the synchronous belt. The rotating motor 17 is fixedly arranged at one end of the rectangular base 10. The central axis of one of the support rollers 11 close to the rotating motor 17 extends outside the rectangular base 10. The two synchronous wheels are respectively arranged on the output shaft of the rotating motor 17 and the extended end of the corresponding support roller 11. A number of bearings 18 for axially connecting the support rollers 11 are embedded on both side walls of the rectangular base 10.

[0024] The rotating motor 17, in cooperation with the synchronous wheels and the synchronous belt, drives the rotation of the connected support roller 11. Through the rotation of the support roller 11, the brake disc 6 mounted thereon is driven to rotate. During the rotation, the middle - elastic pieces 13 keep the brake disc 6 in the central position of the rectangular base 10. During this process, the visual detection system is used to judge and adjust the rotational movement of the brake disc 6 in real - time.

[0025] In order to achieve the purpose of smoothly clamping the brake disc 6 and driving its rotation, the following features are specifically set: The inner positioning fixture assembly 2 includes a hollow cylindrical tube 19, a threaded collar 20 movably arranged inside the hollow cylindrical tube 19, a long lead screw 21 coaxially arranged inside the hollow cylindrical tube 19, a drive motor 22 fixedly arranged at one end of the hollow cylindrical tube 19, a plurality of X-shaped connecting rods 23 evenly distributed on the outer side of the hollow cylindrical tube 19, and a plurality of positioning rods 24 respectively arranged on the outer sides of the X-shaped connecting rods 23. A plurality of strip-shaped through holes 25 evenly distributed in the circumferential direction are formed on the tube wall of the hollow cylindrical tube 19. One hinge shaft 26 is fixedly arranged at one end of each strip-shaped through hole 25. A plurality of first hinge seats 27 evenly distributed in the circumferential direction are formed on the outer wall of the threaded collar 20. Each first hinge seat 27 is slidably inserted into the corresponding strip-shaped through hole 25. Both ends of each X-shaped connecting rod 23 close to the hollow cylindrical tube 19 are respectively connected to the corresponding hinge shaft 26 and the first hinge seat 27. A second hinge seat 28 is arranged at the inner end of each positioning rod 24, and a strip-shaped hole slide rail 29 is formed at the other end. Both ends of the X-shaped connecting rod 23 far from the hollow cylindrical tube 19 are respectively connected to the second hinge seat 28 and the strip-shaped hole slide rail 29. The drive motor 22 is fixedly connected to one end of the long lead screw 21, and the long lead screw 21 is in threaded connection with the threaded collar 20.

[0026] When the rotary spindle system drives the inner positioning fixture assembly 2 to extend into a predetermined position in the central hole of the brake disc 6, the drive motor 22 operates to drive the long lead screw 21 to rotate. The rotation of the long lead screw 21 drives the threaded collar 20 in threaded cooperation with it to translate. The translation of the threaded collar 20 drives the angle of the X-shaped connecting rod 23 to change. The X-shaped connecting rod 23 is formed by hinging two connecting rods. During this process, the length of the X-shaped connecting rod 23 in the radial direction of the hollow cylindrical tube 19 becomes longer, so as to move the connected positioning rod 24 radially outward until the positioning rod 24 is completely embedded and tightened against the inner wall of the brake disc 6, thereby completing the inner support clamping of the brake disc 6. During the process of the X-shaped connecting rod 23 changing its angle as the threaded collar 20 moves, the strip-shaped hole slide rail 29 formed on the inner wall of the positioning rod 24 is used to adapt to the length change of the X-shaped connecting rod 23 in the generatrix direction of the hollow cylindrical tube 19, thereby effectively preventing jamming.

[0027] In order to more stably support and clamp the inner wall of the brake disc 6, the following features are specifically set: The outer side wall of the positioning rod 24 is an arc surface structure. An inner support slider 30 is slidably sleeved on the outer side of the positioning rod 24. Strip-shaped sliding grooves 31 for slidably fitting the inner support slider 30 are formed on both side walls of the positioning rod 24. A locking bolt 32 for pressing against the outer wall of the positioning rod 24 is screwed on the inner support slider 30.

[0028] During the rotation of the aforementioned brake disc 6, through the real-time detection of the visual detection system and finally making the arc-shaped opening 7 on the inner hole of the brake disc 6 (the arc-shaped opening 7 is the opening between several spaced connecting ears 8 formed on the inner ring of the brake disc 6, and the connecting ears 8 are connected to the adapter plate. For different vehicle models, the brake disc 6 is the same, and the difference lies in the adapter plate) correspond to the orientation of all the positioning rods 24 one by one. Then, during the process of the positioning rod 24 moving radially outward subsequently, it can directly embed into the arc-shaped opening 7. At this time, the inner support slider 30 outside the positioning rod 24 abuts tightly. Since the thickness of the aforementioned connecting ear 8 is less than the thickness of the brake disc 6, and for some special brake discs 6 due to their shapes, the distance from the arc top of the arc-shaped opening 7 to the center of the brake disc 6 is less than the inner diameter of the brake disc 6, an inner support slider 30 is added to adapt to such situations. At this time, the arc top of the arc-shaped opening 7 is tightened by the positioning rod 24, and the inner wall of the brake disc 6 is tightened by the inner support slider 30, thus ensuring the stability of the outer support clamping.

[0029] To ensure that in extreme cases such as when the brake disc 6 is not correctly positioned, the inner positioning fixture assembly 2 will not collide with the brake disc 6 during the process of moving towards the inner hole of the brake disc 6, the following features are specifically set: One end of the hollow cylindrical tube 19 facing the brake pad is fixedly connected with an umbrella-shaped cone head 33. Both ends of the hollow cylindrical tube 19 are fixedly connected with bearing end caps 34 for axially connecting the two ends of the long lead screw 21. A connecting column 35 for sleeving the umbrella-shaped cone head 33 is formed on the outer side of one of the bearing end caps 34. A bolt hole 36 for fixedly connecting with the connecting column 35 is formed at the center of the umbrella-shaped cone head 33. A connecting handle 37 for connecting with the rotating main shaft system is fixedly connected to the outer side of the other bearing end cap 34, and the connecting handle 37 is arranged coaxially with the hollow cylindrical tube 19.

[0030] By setting the umbrella-shaped cone head 33, it is ensured that the brake disc 6 can still be smoothly picked up and clamped when it is displaced. The umbrella-shaped cone head 33 is fixedly connected to the head of the hollow cylindrical tube 19 through a bolt passing through the bolt hole 36. When all the rear positioning rods 24 retract into the strip-shaped through holes 25 on the hollow cylindrical tube 19, all the positioning rods 24 are within the coverage range of the umbrella-shaped cone head 33, thereby ensuring that during the process of the umbrella-shaped cone head 33 guiding itself into the inner ring of the brake disc 6 through its inclined surface, the rear positioning rods 24 will not hit the inner ring of the brake disc 6. In addition, the entire hollow cylindrical tube 19 is connected to the rotating output shaft of the rotating main shaft system through the connecting handle 37 at the tail end, so that the rotating main shaft system can drive the inner positioning fixture assembly 2 to perform translational and rotational movements.

[0031] To simply achieve double-sided synchronous grinding and polishing of the rotating brake disc 6, the following features are specifically set: The double-sided polishing assembly 3 also includes an opposing jaw assembly 38 and two groups of grinding motors 39 respectively arranged at the two jaw ends of the opposing jaw assembly 38. The output shaft of each grinding motor 39 is connected to the corresponding roller polishing brush 5. The opposing jaw assembly 38 is connected to the translation guide rail assembly 4 through a slide seat 40. The upper end of the long connecting rod 9 is connected to the bottom of the slide seat 40, and the lower end is connected to one side of the disc carrier 1.

[0032] Through the opposing clamping jaw assemblies 38 (mature existing technology, no longer described here), the grinding motors 39 are driven to approach each other until the two roller polishing brushes 5 respectively connected to the output shafts of the two grinding motors 39 are pressed against the disk surface of the brake disc 6, and the high-speed rotation of the grinding motor 39 is coordinated to achieve synchronous grinding and polishing of the double-sided disk surface of the brake disc 6.

[0033] During the mechanical grinding process of the brake disc 6, both the drum polishing brush 5 and the brake disc 6 may rotate, depending on the specific grinding equipment and process design.

[0034] 1. Rotary grinding with the roller polishing brush 5, which is the most common grinding method. The advantage of this method is that the rotation speed of the roller polishing brush 5 can be precisely controlled, and a stable and efficient cutting force can be provided. Due to the rotational motion of the roller polishing brush 5, the abrasive particles pass through the surface of the brake disc 6 at a very high speed, achieving the purpose of removing burrs and grinding. At the same time, by controlling the feed amount of the roller polishing brush 5, that is, the distance that the roller polishing brush 5 approaches the surface of the brake disc 6, the depth of grinding can be precisely controlled. For example, when the surface of the brake disc 6 needs to be finely ground, the feed amount can be set to a smaller value so that the thickness of each cutting of the roller polishing brush 5 is very thin, thereby obtaining a smooth surface.

[0035] 2. Rotational grinding of the brake disc 6: The rotation of the brake disc 6 can make the entire surface evenly pass through the roller polishing brush 5. For some large brake discs 6 with relatively regular shapes, this method helps to ensure the uniformity of grinding. Moreover, this method can better utilize the rotational inertia of the brake disc 6 itself, reduce vibration during the grinding process, and provide a more stable grinding effect, especially when grinding at high speed.

[0036] 3. The roller polishing brush 5 and the brake disc 6 are rotated and polished at the same time. This method combines the advantages of the above two methods. Their rotation directions can be the same or opposite. For example, when the roller polishing brush 5 and the brake disc 6 rotate in opposite directions, the relative speed will increase, thereby improving the efficiency of polishing. At the same time, this method can also have a good polishing effect on brake discs 6 with complex shapes. By reasonably adjusting the rotation speed and feed rate of the two, the polishing process can be made more flexible and precise. For example, when polishing a brake disc 6 with complex patterns or ventilation grooves, simultaneous rotation can ensure that all parts can be fully polished, and the polishing parameters can be dynamically adjusted according to the requirements of different parts.

[0037] In order to ensure that the disc carrier 1 can synchronously drive the double-sided polishing assembly 3 away from or close to the brake disc 6 during the lifting process, the following features are specifically set: The translation guide rail assembly 4 includes a rectangular slide rail structure composed of two guide rods 41 and two fasteners 42 . First linear bearings 43 are respectively embedded at both ends of the slide seat 40 . The two first linear bearings 43 are respectively slidably sleeved on the two guide rods 41 .

[0038] When the disc carrier 1 descends, the long connecting rod 9 drives the slide 40 on the two guide rods 41 to move horizontally, thereby driving the two roller polishing brushes 5 to approach the brake disc 6. When the disc carrier 1 rises to catch the disc, the long connecting rod 9 can drive the slide 40 together with the opposing clamping jaw assembly 38 and the two roller polishing brushes 5 to move away from the brake disc 6 synchronously, thereby ensuring the linkage between the disc carrier 1 and the double-sided polishing assembly 3 and avoiding the collision between the two.

[0039] In order to be able to fine-tune the precise position of the two roller polishing brushes 5 during operation, the following features are specifically set: A sliding beam 44 is provided between the long connecting rod 9 and the double-sided polishing assembly 3. The upper end of the long connecting rod 9 is hinged to the bottom of the sliding beam 44. Both ends of the sliding beam 44 are embedded with second linear bearings 45 that match the guide rod 41. An adjusting screw 46 is axially connected to the middle part of the sliding beam 44. A flange screw sleeve 47 for matching the adjusting screw 46 is provided on the sliding seat 40.

[0040] Before the grinding work is carried out, the working positions of the two roller polishing brushes 5 need to be pre-adjusted. The specific method is as follows: After the brake disc 6 is clamped and fixed on the inner positioning fixture assembly 2, the disc carrier 1 descends and stops. At this time, the long connecting rod 9 directly pulls the sliding cross beam 44 and indirectly drives the opposing jaw assembly 38 to move to the working position. At this time, both the rotating main shaft system and the grinding motor 39 do not work. At this time, the opposing jaw assembly 38 acts to drive the two roller polishing brushes 5 to approach and fit the disc surface of the brake disc 6. At this time, rotate the adjusting screw 46, and drive the slide seat 40 that is threadedly engaged with it to translate horizontally along the guide rod 41 by rotating the adjusting screw 46, so as to finely adjust the positions of the two roller polishing brushes 5 in the horizontal direction until the outermost end of the roller polishing brush 5 does not touch the positioning rod 24. By this method, the positions of the roller polishing brushes 5 are accurately adjusted to avoid the risk of collision with the rotating positioning rod 24 during subsequent formal work.

[0041] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A double-sided grinding and deburring device for a brake disc, comprising a lifting system and a rotating spindle system capable of horizontal movement, characterized in that: A disc carrier (1) is arranged on the lifting output end of the lifting system, an inner positioning fixture assembly (2) is arranged on the rotating output end of the rotating spindle system, and a double-sided polishing assembly (3) and a translation guide rail assembly (4) are also arranged on the side of the disc carrier (1), the double-sided polishing assembly (3) is movably arranged on the translation guide rail assembly (4), the double-sided polishing assembly (3) includes two roller polishing brushes (5) that can approach each other, and the two roller polishing brushes (5) are respectively located on both sides of the brake disc (6), the translation guide rail assembly (4) is fixedly arranged in a horizontal state and is perpendicular to the rotating spindle system, and the double-sided polishing assembly (3) and the disc carrier (1) are connected via a long connecting rod (9).

2. A double-sided grinding and deburring device for a brake disc according to claim 1, characterized in that: The disk carrier (1) comprises a rectangular base (10), two supporting rollers (11) arranged on the inner side of the rectangular base (10), two guiding columns (12) arranged on the inner side of the rectangular base (10), and two pairs of centering spring plates (13) arranged at both ends of the rectangular base (10); the rectangular base (10) is formed with a receiving groove (14) extending downward from the top; both side walls of the rectangular base (10) are provided with V-shaped avoidance notches (15) of the same shape and extending downward; the two supporting rollers (11) are respectively axially connected to the bottom of both ends of the receiving groove (14); the rectangular base (10) is also provided with a rotating mechanism for driving one of the supporting rollers (11) to rotate; the two guiding columns (12) are provided with a rotating mechanism for driving one of the supporting rollers (11) to rotate; The columns (12) are respectively fixedly arranged at the upper halves of both ends of the accommodating slot (14), the upper end of each of the guide columns (12) extends upward, and the inner sides of the upper ends of the two guide columns (12) are formed with an oblique angle portion (16) for guiding the brake disc (6) to slide down. Two pairs of centering springs (13) are respectively arranged at the top of both ends of the rectangular base (10), and the number of each pair of centering springs (13) is two. The lower end of each centering spring (13) is fixedly connected to the inner wall of the accommodating slot (14), the upper half of each centering spring (13) is an arc-shaped plate structure, and the arc tops of each pair of centering springs (13) are arranged facing each other, and the two guide columns (12) are respectively arranged at the middle position of the two pairs of centering springs (13).

3. A double-sided grinding and deburring device for brake discs according to claim 2, characterized in that: The rotating mechanism comprises a rotating motor (17), a synchronous belt and two synchronous wheels connected by the synchronous belt transmission, wherein the rotating motor (17) is fixedly arranged at one end of a rectangular base (10), wherein a central axis of a supporting roller (11) close to the rotating motor (17) extends to the outside of the rectangular base (10), and the two synchronous wheels are respectively arranged on the output shaft of the rotating motor (17) and the extended end of the corresponding supporting roller (11), and a plurality of bearings (18) for connecting the supporting roller (11) are embedded on both side walls of the rectangular base (10).

4. The double-sided grinding and deburring device for brake discs according to claim 1, characterized in that: The inner positioning fixture assembly (2) comprises a hollow cylindrical tube (19), a threaded collar (20) movably arranged on the inner side of the hollow cylindrical tube (19), a long screw rod (21) coaxially arranged on the inner side of the hollow cylindrical tube (19), a driving motor (22) fixedly arranged on one end of the hollow cylindrical tube (19), a plurality of X-shaped connecting rods (23) evenly distributed on the outer side of the hollow cylindrical tube (19), and a plurality of positioning rods (24) respectively arranged on the outer side of the X-shaped connecting rods (23), a plurality of strip-shaped through holes (25) evenly distributed along the circumferential direction are formed on the tube wall of the hollow cylindrical tube (19), one end of each of the strip-shaped through holes (25) is fixedly arranged with a hinge shaft (26), and a plurality of strip-shaped through holes (25) are formed on the outer wall of the threaded collar (20). A plurality of first hinge seats (27) are evenly distributed along the circumferential direction, each first hinge seat (27) is slidably embedded in the corresponding strip-shaped through hole (25), and the two ends of each X-shaped connecting rod (23) close to the hollow cylindrical tube (19) are respectively connected to the corresponding hinge shaft (26) and the first hinge seat (27), and the inner end of each positioning rod (24) is provided with a second hinge seat (28), and the other end is formed with a strip-shaped hole slide rail (29), and the two ends of the X-shaped connecting rod (23) away from the hollow cylindrical tube (19) are respectively connected to the second hinge seat (28) and the strip-shaped hole slide rail (29), and the driving motor (22) is fixedly connected to one end of the long lead screw (21), and the long lead screw (21) is threadedly connected to the threaded collar (20).

5. The double-sided grinding and deburring device for brake discs according to claim 4, characterized in that: The outer wall of the positioning rod (24) is a curved structure, and an inner support slider (30) is slidably embedded in the outer side of the positioning rod (24). The two side walls of the positioning rod (24) are formed with strip-shaped sliding grooves (31) for the inner support slider (30) to slide and fit in. The inner support slider (30) is screwed with a locking bolt (32) for pressing against the outer wall of the positioning rod (24).

6. The double-sided grinding and deburring device for brake discs according to claim 4, characterized in that: An umbrella-shaped cone head (33) is fixedly connected to one end of the hollow cylindrical tube (19) facing the brake pad, and bearing end covers (34) are fixedly connected to both ends of the hollow cylindrical tube (19) for axially connecting the two ends of the long screw rod (21), wherein a connecting column (35) for sleeve-mounting the umbrella-shaped cone head (33) is formed on the outer side of one of the bearing end covers (34), and a bolt hole (36) for connecting to the connecting column (35) is formed at the center of the umbrella-shaped cone head (33), and a connecting handle (37) for connecting to the rotating spindle system is fixedly connected to the outer side of the other bearing end cover (34), and the connecting handle (37) is coaxially arranged with the hollow cylindrical tube (19).

7. The double-sided grinding and deburring device for brake discs according to claim 1, characterized in that: The double-sided polishing assembly (3) further comprises an opposing clamping jaw assembly (38) and two groups of grinding motors (39) respectively arranged at the two claw ends of the opposing clamping jaw assembly (38), the output shaft of each grinding motor (39) being connected to the corresponding roller polishing brush (5), the opposing clamping jaw assembly (38) being connected to the translation guide rail assembly (4) via a slide seat (40), the upper end of the long connecting rod (9) being connected to the bottom of the slide seat (40), and the lower end being connected to one side of the disc carrier (1).

8. The double-sided grinding and deburring device for brake discs according to claim 7, characterized in that: The translation guide rail assembly (4) comprises a rectangular slide rail structure composed of two guide rods (41) and two fasteners (42); first linear bearings (43) are respectively embedded at both ends of the slide seat (40); and the two first linear bearings (43) are respectively slidably sleeved on the two guide rods (41).

9. The double-sided grinding and deburring device for brake discs according to claim 7, characterized in that: A sliding beam (44) is provided between the long connecting rod (9) and the double-sided polishing assembly (3), the upper end of the long connecting rod (9) is hinged to the bottom of the sliding beam (44), both ends of the sliding beam (44) are embedded with second linear bearings (45) that match the guide rod (41), the middle axis of the sliding beam (44) is connected to an adjusting screw (46), and the slide seat (40) is provided with a flange screw sleeve (47) for matching the adjusting screw (46).

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