A production device and method of a brake disc based on pure cast steel

Abstract

The application discloses a kind of based on pure cast steel brake disc production device and method, belong to brake disc production technical field.The application includes raw material to be cut and polished, advancing table, cutting frame, polishing frame, blanking table, the raw material is arranged on advancing table, advancing table is equipped with advancing assembly, cutting frame is arranged on the side of advancing table, polishing frame is arranged on the end of cutting frame away from advancing table, blanking table is arranged on the side of polishing frame away from cutting frame, tailstock and headstock are arranged on advancing table, at least a pair of cams are rotationally arranged inside headstock, at least a pair of the cams are evenly arranged, anti-skid rubber is arranged on the surface of each cam, a coil spring is mounted at the rotation connection between each cam and headstock, one end of the raw material is passed through the headstock, the cam on the headstock is in contact with the raw material under the action of the coil spring, the other end of the raw material abuts against the tailstock, the raw material is attracted by the electromagnetic chuck when it is powered on, and the tailstock drives the raw material to move gradually.

Description

Technical Field

[0001] This invention relates to the field of brake disc manufacturing technology, specifically to a brake disc manufacturing apparatus and method based on pure cast steel. Background Technology

[0002] High-speed rail brake discs are an indispensable and important part of the high-speed rail braking system. High-speed rail brake discs are usually cast individually using coated sand molding. After casting, they are then ground and finished. Although this method of production is convenient for mold making and quick, the surface quality of the molded parts is not high, and more time is needed for subsequent finishing. Using a molded metal mold increases the cost of the mold, but it eliminates many finishing steps in the subsequent processing. The two methods of obtaining the final product of the brake disc each have their advantages and disadvantages, and there is a situation where you can't have your cake and eat it too.

[0003] Using large castings for cutting and manufacturing not only meets the requirements that the thickness of the cast structure cannot be too small and the shape should not be too complex, but also avoids the problem of poor fluidity of molten steel. It can also greatly save equipment costs. However, in general sawing, the tail material is clamped and cannot be processed, resulting in material waste. The brake disc surface after cutting is rough and cannot be formed in one go, so more processing equipment is still needed for subsequent processing. Summary of the Invention

[0004] The purpose of this invention is to provide a brake disc production apparatus and method based on pure cast steel to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a brake disc production device based on pure cast steel, comprising raw material to be cut and ground, a feeding platform, a cutting frame, a grinding frame, and a unloading platform. The raw material is placed on the feeding platform, and a feeding assembly is installed on the feeding platform. The cutting frame is placed on one side of the feeding platform, and the grinding frame is placed at the end of the cutting frame away from the feeding platform. The unloading platform is placed on the side of the grinding frame away from the cutting frame. A tail frame and a head frame are provided on the feeding platform. At least one pair of cams are rotatably arranged inside the head frame. The at least one pair of cams are evenly distributed. Anti-slip rubber is provided on the surface of each cam. A coil spring is installed at the rotatable connection between each cam and the head frame. One end of the raw material passes through the head frame, and the cam on the head frame contacts the raw material under the action of the coil spring. The other end of the raw material abuts against the tail frame. An electromagnetic chuck is energized to attract the raw material, and the tail frame drives the raw material to move gradually.

[0006] Furthermore, the propulsion assembly includes an electromagnetic chuck, which is mounted on the tailstock and adsorbs the raw material. A flat shaft is rotatably mounted inside the propulsion platform, with one end of the flat shaft extending out of the propulsion platform and a handle provided at the point where the flat shaft extends out of the propulsion platform.

[0007] Furthermore, the propulsion assembly includes a one-way locking sleeve, which is fitted onto a flat shaft. A pair of small cams are evenly distributed inside the one-way locking sleeve. The connection method between the small cams and the one-way locking sleeve is the same as the connection method between the cams and the headstock. A limit sleeve is provided on the one-way locking sleeve. An electric push rod is provided at the bottom of the tailstock. The piston rod of the electric push rod is slidably disposed in the limit sleeve. A small slider is slidably disposed on the limit sleeve. A bolt is threaded onto the small slider. A scale is provided at the bottom of the limit sleeve. An indicator needle is connected to the bottom of the small slider. The operator first sets the distance the tailstock moves the raw material each time according to the cutting thickness of the brake disc. The operator then loosens the bolt and moves the small slider. By observing the scale indicated by the indicator needle, the operator moves the bolt to the desired position. The bolt is then tightened against the inner wall of the limit sleeve to fix the bolt's position. The electric push rod... When the rod is energized, it pushes out the piston rod. After the piston rod hits the bolt, it pushes the limiting sleeve to move. The limiting sleeve pushes the one-way locking sleeve to move. The small cam rolls along the surface of the flat shaft. As the small cam rolls, the distance between its outer contour and the center of rotation increases. The small cam clamps the flat shaft, preventing the one-way locking sleeve from moving. The tailstock is subjected to a reaction force, pushing the material to move a certain distance, allowing the material to extend out of the headstock for cutting. Then, the electric actuator retracts the piston rod, and the material moves towards the tailstock. The cam rolls with the material, increasing the distance between its outer contour and the center of rotation, clamping the material. The piston rod pulls the limiting sleeve to move, and the limiting sleeve drives the one-way locking sleeve to move. When the small cam rotates, the distance between its outer contour and the center of rotation decreases. The small cam releases the flat shaft, and the one-way locking sleeve moves towards the headstock. The relative position of the limiting sleeve and the tailstock remains unchanged from their initial positions. The closer the bolt is to the tailstock, the longer the tailstock moves each time, and the longer the material extends beyond the headstock. Conversely, the farther the bolt is from the tailstock, the shorter the tailstock moves each time, the shorter the material extends beyond the headstock, and the thinner the cut brake disc. The cutting thickness of the brake disc can be adjusted by adjusting the position of the bolt. By using an electromagnetic chuck to attract the material, the material can be cut directly at the tail section without being clamped, reducing waste of tail material.

[0008] Furthermore, the cutting frame includes two uprights. A driven slider is slidably mounted on one upright, and a power slider is slidably mounted on the other upright. An arched connecting frame connects the power slider and the driven slider. A cutting motor is installed inside the power slider. A crank is connected to the shaft of the cutting motor, and a connecting rod is rotatably connected to the crank. A saw blade is slidably connected between the power slider and the driven slider. One end of the saw blade is rotatably connected to the connecting rod. A lifting motor is installed on one side of one upright. A screw is installed on the lifting motor, and the screw is threadedly connected to the power slider. When the lifting motor is energized, it drives the screw to rotate, causing the power slider to move up and down. The power slider drives the driven slider to move synchronously through the connecting frame. When the power slider moves downward, the cutting motor is energized, driving the crank to rotate. The crank drives the saw blade to move back and forth through the connecting rod, and the saw blade cuts the raw material after contacting it.

[0009] Furthermore, both the power slider and the driven slider are equipped with limiting wheels, and an oil-throwing guide wire is connected between the two limiting wheels. A driven sprocket is coaxially connected to the limiting wheel located in the power slider. A drive sprocket is also coaxially connected to the cutting motor. A chain connects the drive sprocket and the driven sprocket. The surface of the oil-throwing guide wire has continuous spiral slits, and an oil sleeve is fitted onto the guide wire. The oil sleeve is connected to an oil tank via a pipe. The cutting motor drives the drive sprocket to rotate, and the drive sprocket drives the driven sprocket to rotate via the chain. A limit wheel rotates, which in turn drives the oil-throwing guide wire to move at high speed. As the saw blade cuts the material, the oil-throwing guide wire travels through the kerf. When the oil-throwing guide wire passes through the oil sleeve, the high-speed movement of the spiral slit increases the gas flow rate inside the oil sleeve, forming a low-pressure zone. The oil tank is connected to the atmosphere, and the oil in the oil tank is squeezed into the low-pressure zone in the oil sleeve by the atmosphere. Subsequently, it is thrown into the kerf by the oil-throwing guide wire, reducing the friction between the saw blade and the material, carrying away the heat from the saw blade, playing a role in lubrication and cooling, improving the roughness of the sawing surface, and reducing saw blade wear.

[0010] Furthermore, a grinding wheel housing is slidably mounted on the grinding frame, with grinding wheels symmetrically arranged on both sides of the grinding wheel housing. A guide wheel is provided above the grinding frame, and a steel cable is connected to the grinding wheel housing. The steel cable passes around the guide wheel and is connected to a counterweight. When the power slider drives the saw blade to move downward, the telescopic hook block is moved downward by the stop lever, causing the grinding wheel housing to move downward. The position of the grinding wheel is lower than that of the saw blade. Before the saw blade cuts the raw material, the grinding wheel first contacts the raw material to grind one end of the raw material.

[0011] Furthermore, a telescopic hook block is slidably mounted on the grinding wheel housing, and a rigid spring is installed between the telescopic hook block and the grinding wheel housing. A stop bar is installed at the position of the power slider corresponding to the telescopic hook block. The stop bar contacts the telescopic hook block. After the grinding wheel has completely ground the end face of the raw material, before the saw blade has cut the raw material, the power slider still drives the grinding wheel housing to move downward through the stop bar. The grinding wheel housing is limited by the grinding frame, and the stop bar pushes the telescopic hook block into the grinding wheel housing. Finally, the stop bar passes the telescopic hook block and continues to move downward. The counterweight pulls the grinding wheel housing upward through the steel cable.

[0012] Furthermore, a guide rail is provided below the unloading platform, and rollers and a drive motor are provided at the bottom of the unloading platform. The rollers are connected to the drive motor shaft. An electromagnet is provided at the position of the headstock on the unloading platform, and a guide plate is provided on the unloading platform. The guide plate is located below the electromagnet. The unloading platform is close to the raw material. Before the saw blade cuts the raw material, the electromagnet attracts one end of the raw material. After the cut brake disc is removed, the raw material extends under the push of the tailstock. The saw blade and the grinding wheel repeat the work of grinding and cutting. The side of the brake disc that is cut has not yet been ground. The unloading platform brings the attracted raw material close to the grinding wheel on the other side of the grinding wheel box. The grinding wheels on both sides grind one side of the raw material that is being cut and the brake disc attracted on the unloading platform at the same time. After the grinding wheels grind twice in sequence, both ends of the brake disc are completely ground. The electromagnet is de-energized and loses its attraction to the brake disc. The brake disc falls onto the guide plate and rolls along the guide plate to the subsequent processing stage.

[0013] A method for producing brake discs based on pure cast steel includes the following specific steps: Step S1: Feeding; Step S2: While cutting, grind one end face of the brake disc; Step S3: Remove the cut brake disc; Step S4: Cut the next brake disc, and grind one end face of the next brake disc while grinding the other end face of the brake disc that has been removed. Step S5: Introduce the brake disc, which has been polished on both sides, into the subsequent processing stage, and remove the brake disc that has been cut off.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. By setting a limit sleeve, the closer the bolt is fixed to the tailstock, the longer the tailstock moves each time, and the longer the material extends out of the headstock. Conversely, the shorter the extension, the thinner the cut brake disc. The cutting thickness of the brake disc can be adjusted by adjusting the position of the bolt. The material can be attracted by the electromagnetic chuck, so that the material does not need to be clamped in the tail section and can be cut directly, reducing waste of tail material.

[0015] 2. The cutting motor drives a limit wheel to rotate, which in turn drives the oil-throwing guide wire to move at high speed. As the saw blade cuts the raw material, the oil-throwing guide wire travels through the saw kerf. When the oil-throwing guide wire passes through the oil sleeve, the high-speed movement of the spiral slit increases the gas flow rate inside the oil sleeve, forming a low-pressure zone. The oil in the oil tank is drawn into the oil sleeve and then thrown into the saw kerf by the oil-throwing guide wire. This reduces the friction between the saw blade and the raw material, removes the heat from the saw blade, and plays a role in lubrication and cooling. It also improves the roughness of the sawing surface and reduces the wear of the saw blade.

[0016] 3. By setting the grinding wheel lower than the saw blade, before the saw blade cuts the raw material, the grinding wheel first contacts the raw material and grinds one end of the raw material. After the grinding wheel has completely ground the end face of the raw material, before the saw blade cuts the raw material, the unloading table approaches the raw material. Before the saw blade cuts the raw material, an electromagnet is used to hold one end of the raw material. After the cut brake disc is removed, the saw blade and grinding wheel repeat the grinding and cutting work. The unloading table brings the held raw material close to the grinding wheel on the other side of the grinding wheel box. The grinding wheels on both sides grind one side of the raw material being cut and the brake disc held on the unloading table at the same time. After the grinding wheels grind twice in sequence, both ends of the brake disc are completely ground. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the cutting frame part of the present invention; Figure 4 This is a schematic diagram of the grinding frame part of the present invention; Figure 5 This is a schematic diagram of the internal structure of the propulsion platform of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the limiting sleeve of the present invention; Figure 7 This is a schematic diagram of the arrangement structure of the head frame and raw materials in this invention; Figure 8 This is a schematic diagram of the internal structure of the power slider of the present invention; Figure 9 This is a schematic diagram of the internal structure of the power slider of the present invention; Figure 10 This is a schematic diagram of the telescopic hook block part of the present invention; In the diagram: 1. Feeding platform; 2. Raw material; 3. Cutting frame; 4. Grinding frame; 5. Unloading platform; 6. Tailstock; 7. Headstock; 8. Electromagnetic chuck; 9. Electric actuator; 10. Limit sleeve; 11. One-way locking sleeve; 12. Flat shaft; 13. Cam; 14. Power slider; 15. Connecting frame; 16. Driven slider; 17. Saw blade; 18. Connecting rod; 19. Crank disc; 20. Limit wheel; 21. Oil sleeve; 22. Oil slinger guide wire; 23. Screw; 24. Lifting motor; 25. Cutting motor; 26. Drive sprocket; 27. Driven sprocket; 28. Grinding wheel housing; 29. ​​Grinding wheel; 30. Steel cable; 31. Counterweight; 32. Telescopic hook block; 33. Electromagnet. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-10 This invention provides a technical solution: a brake disc production device based on pure cast steel, comprising a raw material 2 to be cut and ground, a feeding platform 1, a cutting frame 3, a grinding frame 4, and a unloading platform 5. The raw material 2 is placed on the feeding platform 1, and a feeding assembly is installed on the feeding platform 1. The cutting frame 3 is placed on one side of the feeding platform 1, and the grinding frame 4 is placed at the end of the cutting frame 3 away from the feeding platform 1. The unloading platform 5 is placed on the side of the grinding frame 4 away from the cutting frame 3. A tail frame 6 and a head frame 7 are provided on the feeding platform 1. At least one pair of cams 13 are rotatably arranged inside the head frame 7. The at least one pair of cams 13 are evenly distributed. Anti-slip rubber is provided on the surface of each cam 13. A coil spring is installed at the rotatable connection between each cam 13 and the head frame 7. The feeding assembly includes an electromagnetic suction device. The electromagnetic chuck 8 is mounted on the tailstock 6 and attracts the raw material 2. A flat shaft 12 is rotatably installed inside the push platform 1. One end of the flat shaft 12 extends out of the push platform 1, and a handle is provided at the end of the flat shaft 12 extending out of the push platform 1. One end of the raw material 2 is passed through the head frame 7, and the cam 13 on the head frame 7 contacts the raw material 2 under the action of the coil spring. The other end of the raw material 2 abuts against the tailstock 6. The electromagnetic chuck 8 is energized to attract the raw material 2, and the tailstock 6 drives the raw material 2 to move gradually. After the raw material 2 is processed, the operator pulls the handle to rotate the flat shaft 12. The two sides of the flat shaft 12 that have been cut off avoid contact with the small cam, so that the tailstock 6 moves back to its original position, and the moving raw material 2 can be reloaded.

[0020] The propulsion assembly includes a one-way locking sleeve 11, which is fitted onto a flat shaft 12. A pair of small cams are evenly distributed inside the one-way locking sleeve 11. The connection method between the small cams and the one-way locking sleeve 11 is the same as the connection method between the cam 13 and the headstock 7. A limit sleeve 10 is provided on the one-way locking sleeve 11. An electric push rod 9 is provided at the bottom of the tailstock 6. The piston rod of the electric push rod 9 is slidably disposed in the limit sleeve 10. A small slider is slidably disposed on the limit sleeve 10, and a bolt is threaded onto the small slider. A scale is provided at the bottom of the limit sleeve 10, and an indicator needle is connected to the bottom of the small slider. The operator first sets the distance that the tailstock 6 moves the raw material 2 each time according to the cutting thickness of the brake disc. The operator then loosens the bolt and moves the small slider, using the indicator needle to indicate the scale on the scale, moving the bolt to the desired position. The bolt is then tightened against the inner wall of the limit sleeve 10 to fix the bolt's position. The electric push rod 9 is then energized, pushing out the piston rod. After the bolt is reached, the limiting sleeve 10 is pushed to move, and the limiting sleeve 10 pushes the one-way locking sleeve 11 to move. The small cam rolls along the surface of the flat shaft 12. As the small cam rolls, the distance between its outer contour and the rotation center increases. The small cam clamps the flat shaft 12, making the one-way locking sleeve 11 unable to move. The tailstock 6 is subjected to a reaction force, which pushes the raw material 2 to move a certain distance, so that the raw material 2 extends out of the headstock 7 for cutting. Then the electric push rod 9 retracts the piston rod, and the raw material 2 moves towards the tailstock 6. The cam 13 rolls with the movement of the raw material 2. The distance between the outer contour of the cam 13 and the rotation center increases, clamping the raw material 2. The piston rod pulls the limiting sleeve 10 to move, and the limiting sleeve 10 drives the one-way locking sleeve 11 to move. When the small cam rotates, the distance between its outer contour and the rotation center decreases. The small cam releases the flat shaft 12, and the one-way locking sleeve 11 moves towards the headstock 7. The relative position of the limiting sleeve 10 and the tailstock 6 remains unchanged relative to the initial position. The closer the bolt is to the tailstock 6, the longer the tailstock 6 moves each time, and the longer the material 2 extends out of the headstock 7. The farther the bolt is from the tailstock 6, the shorter the tailstock 6 moves each time, the shorter the material 2 extends out of the headstock 7, and the thinner the cut brake disc. The cutting thickness of the brake disc can be adjusted by adjusting the position of the bolt. By using the electromagnetic chuck 8 to attract the material 2, the material 2 can be cut directly in the tail section without being clamped, reducing waste of tail material.

[0021] The cutting frame 3 includes two uprights. A driven slider 16 is slidably mounted on one upright, and a powered slider 14 is slidably mounted on the other upright. An arched connecting frame 15 connects the powered slider 14 and the driven slider 16. A cutting motor 25 is installed inside the powered slider 14. A crank disc 19 is connected to the shaft of the cutting motor 25, and a connecting rod 18 is rotatably connected to the crank disc 19. A saw blade 17 is slidably connected between the powered slider 14 and the driven slider 16. One end of the saw blade 17 is rotatably connected to the connecting rod 18. A lifting motor 24 is installed on one side of one upright. 4 is equipped with a screw 23, which is threadedly connected to the power slider 14. Both the power slider 14 and the driven slider 16 are equipped with limit wheels 20. An oil-throwing guide wire 22 is connected between the two limit wheels 20. The limit wheel 20 located in the power slider 14 is coaxially connected to the driven sprocket 27. The cutting motor 25 is also coaxially connected to the drive sprocket 26. A chain is connected between the drive sprocket 26 and the driven sprocket 27. The surface of the oil-throwing guide wire 22 has continuous spiral gaps. An oil sleeve 21 is fitted on the oil-throwing guide wire 22. The oil sleeve 21 is connected to an oil tank through a pipe.

[0022] When the lifting motor 24 is energized, it drives the screw 23 to rotate. The screw 23 causes the power slider 14 to move up and down. The power slider 14 drives the driven slider 16 to move synchronously through the connecting frame 15. When the power slider 14 moves downward, the cutting motor 25 is energized, which drives the crank plate 19 to rotate. The crank plate 19 drives the saw blade 17 to move back and forth through the connecting rod 18. After the saw blade 17 contacts the raw material 2, it cuts. The cutting motor 25 drives the drive sprocket 26 to rotate. The drive sprocket 26 drives the driven sprocket 27 to rotate through the chain. The rotation of the driven sprocket 27 drives a limit wheel 20 to rotate, which limits the rotation of the limit wheel 20. The wheel 20 drives the oil-throwing guide wire 22 to move at high speed. As the saw blade 17 cuts the raw material 2, the oil-throwing guide wire 22 travels through the saw kerf. When the oil-throwing guide wire 22 passes through the oil sleeve 21, the high-speed movement of the spiral slit increases the gas flow rate inside the oil sleeve 21, forming a low-pressure area. The oil tank is connected to the atmospheric pressure. The oil in the oil tank is squeezed into the low-pressure area in the oil sleeve 21 by the atmosphere, and then thrown into the saw kerf by the oil-throwing guide wire 22. This reduces the friction between the saw blade 17 and the raw material 2, removes the temperature from the saw blade 17, and plays a role in lubrication and cooling. It also improves the roughness of the sawing surface and reduces the wear of the saw blade 17.

[0023] A grinding wheel housing 28 is slidably mounted on the grinding frame 4. Grinding wheels 29 are symmetrically arranged on both sides of the grinding wheel housing 28. A guide wheel is provided above the grinding frame 4. A steel cable 30 is connected to the grinding wheel housing 28. The steel cable 30 passes around the guide wheel and is connected to a counterweight 31. A telescopic hook block 32 is slidably mounted on the grinding wheel housing 28. A stiff spring is provided between the telescopic hook block 32 and the grinding wheel housing 28. A stop bar is provided at the position of the power slider 14 corresponding to the telescopic hook block 32. The stop bar contacts the telescopic hook block 32. When the power slider 14 drives the saw blade 17 to move downward, the stop bar moves the telescopic hook block 32 to drive the grinding wheel. The grinding wheel housing 28 moves downward, and the position of the grinding wheel 29 is lower than that of the saw blade 17. Before the saw blade 17 cuts the raw material 2, the grinding wheel 29 first contacts the raw material 2 to grind one end of the raw material 2. After the grinding wheel 29 has completely ground the end face of the raw material 2, the saw blade 17 has not yet cut the raw material 2. The power slider 14 still drives the grinding wheel housing 28 to move downward through the stop bar. The grinding wheel housing 28 is limited by the grinding frame 4. The stop bar pushes the telescopic hook block 32 into the grinding wheel housing 28. Finally, the stop bar passes the telescopic hook block 32 and continues to move downward. The counterweight block 31 pulls the grinding wheel housing 28 upward through the steel cable 30.

[0024] A guide rail is installed below the unloading table 5, and rollers and a drive motor are installed at the bottom of the unloading table 5. The rollers are connected to the drive motor shaft. An electromagnet 33 is installed on the unloading table 5 at the position corresponding to the headstock 7. A guide plate is installed on the unloading table 5, located below the electromagnet 33. When the unloading table 5 approaches the raw material 2, the electromagnet 33 holds one end of the raw material 2 before the saw blade 17 cuts it. After the cut brake disc is removed, the raw material 2 extends under the push of the tailstock 6. The saw blade 17 and the grinding wheel 29 repeat the process. During the grinding and cutting process, the side of the brake disc being cut has not yet been ground. The unloading table 5 brings the suction-held material 2 close to the grinding wheel 29 on the other side of the grinding wheel housing 28. The grinding wheels 29 on both sides simultaneously grind one side of the material 2 being cut and the brake disc suctioned on the unloading table 5. After two successive grindings by the grinding wheels 29, both ends of the brake disc are completely ground. The electromagnet 33 is de-energized and loses its attraction to the brake disc. The brake disc falls onto the guide plate and rolls along the guide plate to the subsequent processing stage.

[0025] A method for producing brake discs based on pure cast steel includes the following specific steps: Step S1: Feeding; Step S2: While cutting, grind one end face of the brake disc; Step S3: Remove the cut brake disc; Step S4: Cut the next brake disc, and grind one end face of the next brake disc while grinding the other end face of the brake disc that has been removed. Step S5: Introduce the brake disc, which has been polished on both sides, into the subsequent processing stage, and remove the brake disc that has been cut off.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are: The working principle of this invention: When using the production device of this invention to produce brake discs, the operator first passes one end of the raw material 2 through the headstock 7. The cam 13 on the headstock 7 contacts the raw material 2 under the action of the coil spring, and the other end of the raw material 2 abuts against the tailstock 6. The electromagnetic chuck 8 is energized to attract the raw material 2. Then, according to the cutting thickness of the brake disc, the operator sets the distance that the tailstock 6 moves the raw material 2 each time, loosens the bolt and moves the small slider. By indicating the scale on the scale with the indicator needle, the bolt is moved to the required position. The bolt is tightened against the inner wall of the limiting sleeve 10 to fix the position of the bolt. The electric push rod 9 is energized to push out the piston rod. After the piston rod hits the bolt, it pushes the limiting sleeve 10 to move. The limiting sleeve 10 pushes the one-way locking sleeve 11 to move. The small cam moves along the surface of the flat shaft 12. As the small cam rolls, the distance between its outer contour and the center of rotation increases. The small cam clamps the flat shaft 12, preventing the one-way locking sleeve 11 from moving. The tailstock 6 is pushed by the reaction force to move the raw material 2 a certain distance, causing the raw material 2 to extend out of the headstock 7 for cutting. Then, the electric push rod 9 retracts the piston rod, and the raw material 2 moves towards the tailstock 6. The cam 13 rolls with the movement of the raw material 2, and the distance between the outer contour of the cam 13 and the center of rotation increases, clamping the raw material 2. The piston rod pulls the limiting sleeve 10 to move, and the limiting sleeve 10 drives the one-way locking sleeve 11 to move. When the small cam rotates, the distance between its outer contour and the center of rotation decreases, and the small cam releases the flat shaft 12. The one-way locking sleeve 11 moves towards the headstock 7, and the relative position of the limiting sleeve 10 and the tailstock 6 remains unchanged relative to the initial position. The closer the bolt is to the tailstock 6, the longer the tailstock 6 moves each time, and the longer the material 2 extends out of the headstock 7. The farther the bolt is from the tailstock 6, the shorter the tailstock 6 moves each time, the shorter the material 2 extends out of the headstock 7, and the thinner the cut brake disc. The cutting thickness of the brake disc can be adjusted by adjusting the position of the bolt. By using the electromagnetic chuck 8 to attract the material 2, the material 2 can be cut directly in the tail section without being clamped, reducing waste of tail material.

[0027] When the lifting motor 24 is energized, it drives the screw 23 to rotate. The screw 23 causes the power slider 14 to move up and down. The power slider 14 drives the driven slider 16 to move synchronously through the connecting frame 15. When the power slider 14 moves downward, the cutting motor 25 is energized, which drives the crank plate 19 to rotate. The crank plate 19 drives the saw blade 17 to move back and forth through the connecting rod 18. After the saw blade 17 contacts the raw material 2, it cuts. The cutting motor 25 drives the drive sprocket 26 to rotate. The drive sprocket 26 drives the driven sprocket 27 to rotate through the chain. The rotation of the driven sprocket 27 drives a limit wheel 20 to rotate, which limits the rotation of the limit wheel 20. The wheel 20 drives the oil-throwing guide wire 22 to move at high speed. As the saw blade 17 cuts the raw material 2, the oil-throwing guide wire 22 travels through the saw kerf. When the oil-throwing guide wire 22 passes through the oil sleeve 21, the high-speed movement of the spiral slit increases the gas flow rate inside the oil sleeve 21, forming a low-pressure area. The oil tank is connected to the atmospheric pressure. The oil in the oil tank is squeezed into the low-pressure area in the oil sleeve 21 by the atmosphere, and then thrown into the saw kerf by the oil-throwing guide wire 22. This reduces the friction between the saw blade 17 and the raw material 2, removes the temperature from the saw blade 17, and plays a role in lubrication and cooling. It also improves the roughness of the sawing surface and reduces the wear of the saw blade 17.

[0028] When the power slider 14 drives the saw blade 17 to move downward, it moves the telescopic hook block 32 through the stop lever to move the grinding wheel housing 28 downward. The position of the grinding wheel 29 is lower than that of the saw blade 17. Before the saw blade 17 cuts the raw material 2, the grinding wheel 29 first contacts the raw material 2 to grind one end of the raw material 2. After the grinding wheel 29 has completely ground the end face of the raw material 2, the saw blade 17 has not yet cut the raw material 2. The power slider 14 still drives the grinding wheel housing 28 to move downward through the stop lever. The grinding wheel housing 28 is limited by the grinding frame 4. The stop lever pushes the telescopic hook block 32 into the grinding wheel housing 28. Finally, the stop lever passes the telescopic hook block 32 and continues to move downward. The counterweight block 31 pulls the grinding wheel housing 28 upward through the steel cable 30.

[0029] The unloading platform 5 approaches the raw material 2. Before the saw blade 17 cuts the raw material 2, the electromagnet 33 attracts one end of the raw material 2. After the cut brake disc is removed, the raw material 2 extends under the push of the tailstock 6. The saw blade 17 and the grinding wheel 29 repeat the grinding and cutting work. The side of the brake disc that was cut has not yet been ground. The unloading platform 5 brings the attracted raw material 2 close to the grinding wheel 29 on the other side of the grinding wheel housing 28. The grinding wheels 29 on both sides grind one side of the raw material 2 that is being cut and the brake disc attracted on the unloading platform 5 at the same time. After the grinding wheels 29 grind twice in sequence, both ends of the brake disc are completely ground. The electromagnet 33 is de-energized and loses its attraction to the brake disc. The brake disc falls onto the guide plate and rolls along the guide plate to the subsequent processing stage.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A brake disc production apparatus based on pure cast steel, comprising raw material (2) to be cut and ground, characterized in that: The assembly includes a push platform (1), a cutting frame (3), a grinding frame (4), and a feeding platform (5). The raw material (2) is placed on the push platform (1). A push assembly is installed on the push platform (1). The cutting frame (3) is placed on one side of the push platform (1). The grinding frame (4) is placed at the end of the cutting frame (3) away from the push platform (1). The feeding platform (5) is placed on the side of the grinding frame (4) away from the cutting frame (3). The push platform (1) is provided with a tail frame (6) and a head frame (7). At least one pair of cams (13) are rotatably arranged inside the head frame (7). At least one pair of cams (13) are evenly distributed. Anti-slip rubber is provided on the surface of each cam (13). A coil spring is installed at the rotatable connection between each cam (13) and the head frame (7). The cutting frame (3) includes two uprights. A driven slider (16) is slidably mounted on one upright and a power slider (14) is slidably mounted on the other upright. An arched connecting frame (15) connects the power slider (14) and the driven slider (16). A cutting motor (25) is installed inside the power slider (14). A crank disk (19) is connected to the shaft of the cutting motor (25). A connecting rod (18) is rotatably connected to the crank disk (19). A saw blade (17) is slidably connected between the power slider (14) and the driven slider (16). One end of the saw blade (17) is rotatably connected to the connecting rod (18). A lifting motor (24) is installed on one side of one upright. A screw (23) is installed on the lifting motor (24). The screw (23) is threadedly connected to the power slider (14). Both the power slider (14) and the driven slider (16) are equipped with limit wheels (20), and an oil-throwing guide wire (22) is connected between the two limit wheels (20). The limit wheels (20) located in the power slider (14) are coaxially connected to a driven sprocket (27). The cutting motor (25) is also shaft-connected to a drive sprocket (26). A chain is connected between the drive sprocket (26) and the driven sprocket (27). The surface of the oil-throwing guide wire (22) has continuous spiral gaps. An oil sleeve (21) is fitted on the oil-throwing guide wire (22). The oil sleeve (21) is connected to an oil tank through a pipe. A grinding wheel housing (28) is slidably mounted on the grinding frame (4). Grinding wheels (29) are symmetrically arranged on both sides of the grinding wheel housing (28). A guide wheel is provided above the grinding frame (4). A steel cable (30) is connected to the grinding wheel housing (28). The steel cable (30) passes around the guide wheel and is connected to a counterweight (31). A telescopic hook block (32) is slidably provided on the grinding wheel housing (28). A hard spring is provided between the telescopic hook block (32) and the grinding wheel housing (28). A stop bar is provided at the position of the power slider (14) corresponding to the telescopic hook block (32). The stop bar is in contact with the telescopic hook block (32).

2. The brake disc production apparatus based on pure cast steel according to claim 1, characterized in that: The propulsion assembly includes an electromagnetic chuck (8), which is mounted on the tailstock (6). The electromagnetic chuck (8) adsorbs the raw material (2). A flat shaft (12) is rotatably mounted inside the propulsion platform (1). One end of the flat shaft (12) extends out of the propulsion platform (1), and a handle is provided at the point where the flat shaft (12) extends out of the propulsion platform (1).

3. The brake disc production apparatus based on pure cast steel according to claim 2, characterized in that: The propulsion assembly includes a one-way locking sleeve (11), which is sleeved on a flat shaft (12). A pair of small cams are evenly distributed inside the one-way locking sleeve (11). The connection method between the small cams and the one-way locking sleeve (11) is the same as the connection method between the cam (13) and the head frame (7). A limit sleeve (10) is provided on the one-way locking sleeve (11). An electric push rod (9) is provided at the bottom of the tail frame (6). The piston rod of the electric push rod (9) is slidably disposed in the limit sleeve (10). A small slider is slidably disposed on the limit sleeve (10). A bolt is threaded onto the small slider. A scale is provided at the bottom of the limit sleeve (10). An indicator needle is connected to the bottom of the small slider.

4. The brake disc production apparatus based on pure cast steel according to claim 1, characterized in that: The unloading platform (5) is provided with a guide rail below it. The bottom of the unloading platform (5) is provided with rollers and a drive motor. The rollers are connected to the drive motor shaft. An electromagnet (33) is provided at the position of the unloading platform (5) corresponding to the head frame (7). A guide plate is provided on the unloading platform (5). The guide plate is located below the electromagnet (33).

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