A kind of grooving equipment for brake disc machining

Abstract

This invention discloses a grooving device for brake disc machining, belonging to the field of automotive parts machining technology. It includes a main support assembly, a clamping assembly, a drilling assembly, an execution assembly, and a transmission assembly. The clamping assembly clamps the brake disc and can rotate around its own axis; the drilling assembly is located above the clamping assembly and can move up and down; the execution assembly can translate horizontally and drive the drilling assembly to translate; the transmission assembly connects the drilling assembly and the clamping assembly. Its engagement state is triggered by the descent of the drilling assembly, establishing a transmission connection between the transmission assembly and the clamping assembly; the disengagement state is triggered by the rise of the drilling assembly. In the engaged state, the translational movement of the execution assembly drives the rotation of the clamping assembly through the transmission assembly. Combined with the translation and rotation of the drilling assembly, an arc-shaped groove is machined on the brake disc. This invention utilizes the tool feed power to drive the brake disc rotation, eliminating the need for a separate drive component, thus saving costs; the control system is simple, easy to control and program, and has a low failure rate.

Description

Technical Field

[0001] This invention relates to a grooving device for processing brake discs, belonging to the field of automotive parts processing technology. Background Technology

[0002] Brake discs are a key safety component in automotive braking systems. Their surfaces typically have several circumferentially distributed grooves. These grooves serve to dissipate heat, remove debris, and increase friction, which is of great significance for improving braking performance and extending service life.

[0003] Currently, brake disc grooving mainly relies on CNC milling machines or special grooving equipment. Existing equipment usually uses a combination of indexing plate and milling mechanism: the brake disc is driven to rotate intermittently to a predetermined position by an independent indexing drive mechanism (such as a servo motor or stepper motor with a reducer), and then the milling mechanism performs linear or circular feed machining.

[0004] However, this traditional structure has the following shortcomings: First, the equipment needs to be equipped with at least two independent drive sources (indexing drive and milling feed drive), which increases the cost of the equipment and the complexity of the electrical control system; second, the coordinated operation of multiple drive sources requires precise synchronous control, which is difficult to program and has a relatively high failure rate; third, due to the need for frequent start-stop and positioning, the impact on the transmission components is greater, and long-term operation can easily lead to a decrease in positioning accuracy.

[0005] To address the aforementioned issues, it is necessary to optimize the structure of existing brake disc grooving equipment to simplify the transmission system, reduce manufacturing costs, and improve control reliability. Summary of the Invention

[0006] The purpose of this invention is to provide a grooving device for processing brake discs, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: Compared with the prior art, the present invention provides a grooving device for processing brake discs, comprising: Main support components; A clamping assembly, mounted on the main support assembly, is used to clamp the brake disc and is capable of rotating about its own axis; A drilling assembly, positioned above the clamping assembly, is capable of vertical movement relative to the clamping assembly and is used to mill and slot the brake disc. An execution component is mounted on the main support component and is capable of horizontal translational movement. The drilling component is connected to the execution component and is driven by the execution component to translate. A transmission assembly is connected between the drilling assembly and the clamping assembly. The transmission assembly has an engaged state and a disengaged state. The engaged state is triggered by the downward movement of the drilling assembly, which drives the transmission assembly to the clamping assembly. The disengaged state is triggered by the upward movement of the drilling assembly, which disengages the transmission assembly from the clamping assembly. In the engaged state, the translational motion of the actuating component is transmitted to the clamping component through the transmission component, driving the clamping component to rotate, thereby causing the brake disc to rotate with the clamping component during milling, and cooperating with the translational and rotational motion of the drilling component to process an arc-shaped groove on the brake disc.

[0008] Furthermore, the main support component includes a processing table.

[0009] Furthermore, the clamping assembly includes: Three-jaw chuck; A rotating shaft, with the three-jaw chuck fixed at its upper end; A support base is fixed on the processing table, and the rotating shaft is rotatably connected to the support base.

[0010] Furthermore, the transmission assembly includes: The gear is coaxially fixed on the rotating shaft; A rack is capable of meshing with the gear. The rack is linked to the drilling assembly and is driven by the drilling assembly to move up and down to achieve meshing or disengagement with the gear. The connecting bracket securely connects the rack and the drilling assembly; The movable seat is slidably connected to the processing table. The guide post is fixed on the movable seat; A guide sleeve is fixed on the rack and slidably connected to the guide post.

[0011] Furthermore, the width of the rack is greater than the thickness of the gear to ensure that the rack and the gear remain engaged when the drilling assembly descends to perform milling.

[0012] Furthermore, the width of the rack is twice the thickness of the gear.

[0013] Furthermore, the clamping assembly also includes a mounting bracket and a damping plate. The mounting bracket is fixed to one side of the support base, and the damping plate is fixed to the mounting bracket and abuts against the outer wall of the rotating shaft.

[0014] Furthermore, the drilling assembly includes: Lifting frame; An electric telescopic push rod is installed on the actuator, and the drive end of the electric telescopic push rod is connected to the lifting frame to drive the lifting frame to move up and down. The electric motor is fixed to the lifting frame; The cutting tool, connected to the output end of the electric motor, is used for milling the brake disc.

[0015] Furthermore, the execution component includes: A movable frame is slidably connected to the machining table, and the drilling assembly is mounted on the movable frame; A threaded rod is rotatably connected to the processing table and threadedly connected to the movable frame; A stepper motor, fixed on the processing table, drives the threaded rod to rotate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses the lifting and lowering motion of the drilling assembly as the clutch control signal for the transmission assembly, enabling the feed power of the actuator to simultaneously drive the brake disc rotation, thus achieving "one drive for multiple uses." Compared to traditional equipment that requires a separate indexing drive motor, this invention eliminates the need for a separate brake disc rotation drive, significantly reducing the number of drive components and lowering equipment manufacturing costs.

[0017] This invention only requires controlling two actions: the translation of the execution component and the lifting of the drilling component, to complete the continuous machining and intermittent indexing of the arc groove, eliminating the need for complex multi-axis synchronous control algorithms. The control logic is clear and intuitive, significantly reducing programming difficulty and the number of electrical components, thereby effectively reducing the complexity and failure rate of the control system and facilitating daily maintenance.

[0018] This invention utilizes the natural lifting and lowering of the drilling assembly to achieve smooth engagement and disengagement of the gear and rack, avoiding the impact and vibration caused by frequent start-stop cycles of traditional indexing mechanisms. Simultaneously, the damping plate provides appropriate rotational damping for the rotating shaft, making the brake disc rotate more smoothly during indexing, which helps maintain indexing accuracy and extend equipment lifespan over the long term. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a frontal perspective view of the present invention; Figure 2This is a schematic diagram of the three-dimensional structure of the present invention with partial side cross-section; Figure 3 The invention proposed Figure 2 A magnified schematic diagram of a portion of area A in the middle; Figure 4 This is a schematic diagram of the three-dimensional structure of the back part of the present invention; Figure 5 This is a schematic diagram of a partial cross-sectional view of the side of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the top surface of the present invention.

[0021] In the diagram: 1. Three-jaw chuck; 2. Rotary shaft; 3. Support base; 4. Machining table; 5. Lifting frame; 6. Electric telescopic push rod; 7. Motor; 8. Movable frame; 9. Threaded rod; 10. Stepper motor; 11. Moving base; 12. Rack; 13. Guide column; 14. Guide sleeve; 15. Gear; 16. Connecting frame; 17. Mounting frame; 18. Damping plate; 19. First dust cover; 20. Second dust cover; 21. Protective cover. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-6 The present invention provides a technical solution: A grooving device for processing brake discs includes a main support assembly, a clamping assembly, a drilling assembly, an execution assembly, and a transmission assembly.

[0024] The main support assembly includes a processing table 4, and a base is fixed to the lower side of the processing table 4 to support the entire equipment.

[0025] A protective cover 21 is slidably connected to the upper side of the processing table 4. A handle is fixed on the protective cover 21 for easy operation by the operator.

[0026] The protective cover 21 is equipped with an observation hole, and a transparent plate is fixed inside the observation hole to facilitate observation of the internal processing, while also serving as a safety protection and dust prevention function.

[0027] The clamping assembly is mounted on the main support assembly and is used to clamp the brake disc and is capable of rotating around its own axis. Specifically, the clamping assembly includes a three-jaw chuck 1, a rotating shaft 2, and a support base 3. The lower side of the three-jaw chuck 1 is fixed to the upper end of the rotating shaft 2, and the three-jaw chuck 1 is used to clamp the brake disc to be processed.

[0028] A support base 3 is rotatably connected to the outer periphery of the rotating shaft 2. The support base 3 is fixed on the upper side of the processing table 4. This structure allows the three-jaw chuck 1 and the brake disc it holds to rotate freely within the support base 3 along with the rotating shaft 2.

[0029] In order to provide appropriate rotational damping and prevent the brake disc from rotating randomly, a mounting bracket 17 is fixed on one side of the support base 3. A damping plate 18 is fixed on the mounting bracket 17. The damping plate 18 has an arc-shaped structure and abuts against the outer wall of the rotating shaft 2, providing stable rotational damping through friction.

[0030] The drilling assembly is positioned above the clamping assembly and can move up and down relative to the clamping assembly to mill and slot the brake disc. The drilling assembly includes a lifting frame 5, an electric telescopic push rod 6, a motor 7, and a cutting tool.

[0031] The shaft end of the electric telescopic push rod 6 is fixed on the lifting frame 5. The electric telescopic push rod 6 is connected to an external power supply and controller through wires to drive the lifting frame 5 to rise and fall.

[0032] An electric motor 7 is fixed to the upper bottom of the lifting frame 5. The electric motor 7 is also connected to an external power source and controller via wires.

[0033] A drill chuck is fixed to the shaft end of the motor 7. A cutting tool, which is a drill bit, is detachably mounted on the drill chuck for milling the brake disc.

[0034] The actuator is mounted on the main support assembly and can move horizontally. The drilling assembly is connected to the actuator and is driven to move horizontally by the actuator. The actuator includes a movable frame 8, a threaded rod 9, and a stepper motor 10.

[0035] The upper side of the movable frame 8 is provided with a mounting hole and two guide holes. The lifting frame 5 slides inside the guide holes, and the electric telescopic push rod 6 is fixed inside the mounting hole, thereby installing the drilling assembly on the movable frame 8.

[0036] The movable frame 8 is slidably connected to the upper side of the processing table 4, and can move smoothly in the horizontal direction.

[0037] The movable frame 8 has a threaded hole on one side, and a threaded rod 9 is connected to the inside of the threaded hole by a thread. A stepper motor 10 is fixed to one end of the threaded rod 9. The stepper motor 10 is fixed to the upper side of the processing table 4, and the threaded rod 9 is rotatably connected to the upper side of the processing table 4.

[0038] Stepper motor 10 drives threaded rod 9 to rotate, which in turn drives movable frame 8 to move horizontally through threaded transmission.

[0039] The transmission assembly is connected between the drilling assembly and the clamping assembly. The transmission assembly has an engaged state and a disengaged state. The specific structure includes a moving seat 11, a rack 12, a guide post 13, a guide sleeve 14, a gear 15, and a connecting frame 16.

[0040] The movable seat 11 is slidably connected to the upper side of the processing table 4. Several guide posts 13 are fixed on the upper side of the movable seat 11. The guide sleeve 14 is fixed on the rack 12 and slidably connected to the outer periphery of the guide post 13, so that the rack 12 can move freely up and down on the guide post 13.

[0041] A gear 15 is fixed on the outer circumference of the rotating shaft 2. The gear 15 matches the rack 12 and can be connected by meshing transmission.

[0042] A connecting frame 16 is fixed to one side of the rack 12. The connecting frame 16 is fixed to one side of the lifting frame 5, thereby realizing the linkage between the rack 12 and the drilling assembly.

[0043] The width of rack 12 is greater than the thickness of gear 15. Both gear 15 and rack 12 are chamfered to facilitate engagement.

[0044] In another embodiment, the width of the rack 12 is twice the thickness of the gear 15 to ensure that the rack 12 remains engaged with the gear 15 when the drilling assembly descends to perform milling.

[0045] To prevent cutting chips and dust from falling into the transmission components, a first dust cover 19 is fixed to the upper side of the machining table 4, and the threaded rod 9 is located inside the first dust cover 19.

[0046] The upper side of the processing table 4 is also provided with a second dust cover 20, which is fixed to the upper end of the guide post 13 to protect the sliding mating surface of the guide post 13 and the guide sleeve 14.

[0047] The working principle and process of this embodiment are as follows: Initial state: The movable frame 8 is far from the three-jaw chuck 1, the electric telescopic push rod 6 is in the retracted state, the height of the drill bit is higher than the three-jaw chuck 1, the rack 12 is above the gear 15, and the rack 12 is separated from the gear 15.

[0048] Step 1: Clamping the workpiece: Clamp the brake disc to be processed on the three-jaw chuck 1.

[0049] Step 2, Feed Positioning: Control the stepper motor 10 to rotate, driving the threaded rod 9 to rotate, causing the movable frame 8 to move closer to the three-jaw chuck 1. When the movable frame 8 moves to the appropriate position (this position is determined according to the starting position of the arc groove to be machined), the stepper motor 10 pauses.

[0050] Step 3, meshing transmission: Control the electric telescopic push rod 6 to extend a certain length, so that the lifting frame 5 descends, and drives the rack 12 to descend together through the connecting frame 16 until the rack 12 meshes with the gear 15. At this time, the transmission component enters the engagement state.

[0051] Step 4: Machining the Arc-Shaped Groove: Control the stepper motor 10 to continue rotating in the same direction, and the movable frame 8 to continue translating. On one hand, the movable frame 8 drives the drilling assembly to translate; on the other hand, the meshing of the rack 12 and gear 15 drives the rotating shaft 2 to rotate, thereby driving the three-jaw chuck 1 and brake disc to rotate. When the drill bit reaches above the brake disc, first control the stepper motor 10 to stop rotating, then control the motor 7 to start, and the motor 7 drives the drill bit to rotate. Then control the electric telescopic push rod 6 to extend a certain length again, so that the drill bit descends to the predetermined depth (determined according to the groove depth), and the drill bit contacts the brake disc to begin drilling. Then control the stepper motor 10 to continue rotating in the same direction again, and while the drill bit is translating, the brake disc is also rotating slowly, thereby machining an arc-shaped groove on the brake disc. Since the width of the rack 12 is greater than the thickness of the gear 15, the rack 12 and gear 15 remain meshed throughout the drilling process.

[0052] Step 5, Reset: After slotting is completed, control the electric telescopic push rod 6 to fully retract, the lifting frame 5 to rise, driving the rack 12 to rise and separate from the gear 15 (the transmission assembly enters the disengaged state). During reset, the three-jaw chuck 1 will not rotate. Then control the stepper motor 10 to rotate in the opposite direction, causing the movable frame 8 to move away from the three-jaw chuck 1 and return to the initial position.

[0053] Step 6: Repeat steps 2 to 5 to process the next arc groove until all grooves are processed.

[0054] Step 7: Change the workpiece: After a single brake disc is finished, release the three-jaw chuck 1 and change to the next brake disc to be processed.

[0055] Through the above process, this embodiment achieves the use of the power from the tool feed to drive the brake disc rotation, eliminating the need for a separate drive unit to rotate the brake disc. Simultaneously, when the tool resets, it can also drive the brake disc to rotate a certain angle, moving it to the next position requiring grooving. This structure saves on the drive unit required to rotate the brake disc, reducing production costs. The control system is simple, easy to control and program, and has a low failure rate.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grooving device for processing brake discs, characterized in that, include: Main support components; A clamping assembly, mounted on the main support assembly, is used to clamp the brake disc and is capable of rotating about its own axis; A drilling assembly, positioned above the clamping assembly, is capable of vertical movement relative to the clamping assembly and is used to mill and slot the brake disc. An execution component is mounted on the main support component and is capable of horizontal translational movement. The drilling component is connected to the execution component and is driven by the execution component to translate. A transmission assembly is connected between the drilling assembly and the clamping assembly. The transmission assembly has an engaged state and a disengaged state. The engaged state is triggered by the downward movement of the drilling assembly, which drives the transmission assembly to the clamping assembly. The disengaged state is triggered by the upward movement of the drilling assembly, which disengages the transmission assembly from the clamping assembly. In the engaged state, the translational motion of the actuating component is transmitted to the clamping component through the transmission component, driving the clamping component to rotate, thereby causing the brake disc to rotate with the clamping component during milling, and cooperating with the translational and rotational motion of the drilling component to process an arc-shaped groove on the brake disc.

2. The grooving equipment for brake disc processing according to claim 1, characterized in that, The main support component includes a processing table (4).

3. The grooving equipment for brake disc processing according to claim 2, characterized in that, The clamping assembly includes: Three-jaw chuck (1); Rotating shaft (2), the three-jaw chuck (1) is fixed at the upper end of the rotating shaft (2); The support base (3) is fixed on the processing table (4), and the rotating shaft (2) is rotatably connected to the support base (3).

4. The grooving equipment for brake disc processing according to claim 3, characterized in that, The transmission assembly includes: Gear (15) is coaxially fixed on the rotating shaft (2); The rack (12) is capable of meshing with the gear (15). The rack (12) is linked with the drilling assembly and is driven to rise and fall by the drilling assembly to achieve meshing or disengagement with the gear (15). A connecting bracket (16) is used to fix the rack (12) to the drilling assembly; The movable seat (11) is slidably connected to the processing table (4); The guide post (13) is fixed on the movable seat (11); The guide sleeve (14) is fixed on the rack (12) and is slidably connected to the guide post (13).

5. The grooving equipment for brake disc processing according to claim 4, characterized in that, The width of the rack (12) is greater than the thickness of the gear (15) to ensure that the rack (12) and the gear (15) remain engaged when the drilling assembly descends to perform milling.

6. The grooving equipment for brake disc processing according to claim 5, characterized in that, The width of the rack (12) is twice the thickness of the gear (15).

7. The grooving equipment for brake disc processing according to claim 3, characterized in that, The clamping assembly also includes a mounting bracket (17) and a damping plate (18). The mounting bracket (17) is fixed to one side of the support base (3), and the damping plate (18) is fixed on the mounting bracket (17) and abuts against the outer wall of the rotating shaft (2).

8. The grooving equipment for brake disc processing according to claim 2, characterized in that, The drilling assembly includes: Lifting frame (5); An electric telescopic push rod (6) is installed on the actuator. The drive end of the electric telescopic push rod (6) is connected to the lifting frame (5) to drive the lifting frame (5) to rise and fall. The electric motor (7) is fixed on the lifting frame (5); The cutting tool is connected to the output end of the electric motor (7) and is used to mill the brake disc.

9. The grooving equipment for brake disc processing according to claim 2, characterized in that, The execution component includes: The movable frame (8) is slidably connected to the processing table (4), and the drilling assembly is mounted on the movable frame (8); The threaded rod (9) is rotatably connected to the processing table (4) and threadedly connected to the movable frame (8); A stepper motor (10) is fixed on the processing table (4) and drives the threaded rod (9) to rotate.

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