A brake pad surface grinding device

Abstract

This utility model provides a brake pad surface grinding device, including a grinding box. A limiting member for clamping and limiting the brake pad is provided on the lower surface of the grinding box. A strip-shaped opening is provided on the upper surface of the grinding box, and a first motor is disposed within the strip-shaped opening. The output end of the first motor is connected to a first screw. First moving blocks are spirally sleeved on both the left and right ends of the first screw. Multiple telescopic cylinders are embedded in the first moving blocks. A grinding element for grinding the brake pad surface is provided at the end of the telescopic rod of each telescopic cylinder. This utility model can grind the surface of brake pads and improve the clamping stability and grinding accuracy of the brake pads.

Description

Technical Field

[0001] This utility model relates to the field of brake pad processing technology, and in particular to a brake pad surface grinding device. Background Technology

[0002] As a core component of the vehicle braking system, the processing quality of the friction surface of automotive brake pads directly affects braking performance and service life. During the manufacturing or repair / replacement of brake pads, precision grinding of their friction surfaces is typically required to meet specified flatness tolerances, surface roughness requirements, and remove burrs and other machining defects. Currently, common brake pad grinding equipment on the market exhibits several technical bottlenecks in practical applications: First, the equipment lacks versatility. Most grinding devices use fixed clamp designs, only adaptable to specific brake pad sizes. When dealing with brake pads of different lengths, widths, thicknesses, or with special curvature requirements, specialized clamps must be replaced or complex mechanical adjustments must be made. This not only significantly reduces production efficiency but also substantially increases equipment modification costs. Second, traditional limiting mechanisms lack sufficient clamping stability for irregularly shaped brake pads, especially when processing products with significant dimensional differences. This can easily lead to clamping loosening or processing vibrations. Such unstable clamping conditions can cause workpiece displacement or vibration during grinding, resulting in quality defects such as ripples and scratches on the ground surface, severely impacting product yield. In addition, the existing equipment is highly complex to operate. Adjusting the limit mechanism to accommodate different brake pad specifications often requires operators to have professional experience and is time-consuming, which is not conducive to the rapid changeover requirements of modern production lines. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a brake pad surface grinding device that can grind the surface of brake pads and improve the clamping stability and grinding accuracy of brake pads.

[0004] This utility model is implemented using the following method: a brake pad surface grinding device, including a grinding box, wherein a limiting member for clamping and limiting the brake pad is provided on the lower surface of the grinding box, and a strip-shaped opening is provided on the upper surface of the grinding box. A first motor is provided in the strip-shaped opening, and a first screw is connected to the output end of the first motor. A first moving block is spirally sleeved on both the left and right ends of the first screw. A multi-section telescopic cylinder is embedded in the first moving block, and a grinding element for grinding the brake pad surface is provided at the end of the telescopic rod of the multi-section telescopic cylinder.

[0005] Furthermore, the limiting component includes an L-shaped limiting block. The bottom surface of the grinding box is provided with strip grooves at both ends. A second motor is provided in the strip groove. The output end of the second motor is connected to a second screw. A second moving block is spirally sleeved on the second screw. The L-shaped limiting block is provided on the upper surface of the second moving block. An anti-slip layer is provided on the inner side of the vertical plate of the L-shaped limiting block.

[0006] Furthermore, a telescopic protective sleeve is provided at the upper end of the strip-shaped groove.

[0007] Furthermore, the grinding component includes a grinding belt, an L-shaped bracket is provided at the end of the telescopic rod of the multi-section telescopic cylinder, a support block is provided on the lower surface of the cross plate of the L-shaped bracket, a swing block is provided on the lower surface of the support block via a third motor, a support plate is provided on the lower surface of the swing block, and the grinding belt is provided on the lower surface of the support plate.

[0008] Furthermore, a dust collection hopper is provided on the inner side of the vertical plate of the L-shaped bracket, and the dust collection hopper is connected to the external dust collection pipe. The dust collection hopper is correspondingly provided to the polishing belt.

[0009] The beneficial effects of this utility model are as follows: This utility model achieves stable clamping of brake pads through limiting components, and combines adjustable grinding components to perform precise grinding on the surface of brake pads, which solves the problems of poor versatility, unstable clamping and complicated operation of traditional equipment. It has the advantages of improving the clamping stability and grinding accuracy of brake pads, enhancing the versatility of equipment and simplifying the operation process. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the structure of the grinding component.

[0012] Figure 3 This is a schematic diagram of the structure of the limiting member. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Please see Figures 1 to 3As shown, this utility model provides an embodiment: a brake pad surface grinding device, including a grinding box 1. The lower inner surface of the grinding box 1 is provided with a limiting member 2 for clamping and limiting the brake pad. The upper surface of the grinding box 1 is provided with a strip-shaped opening 3. A first motor (not shown) is provided in the strip-shaped opening 3. The output end of the first motor is connected to a first screw 4. The left and right ends of the first screw 4 are both spirally fitted with first moving blocks 41. A multi-section telescopic cylinder 42 is embedded in the first moving block 41. The telescopic rod end of the multi-section telescopic cylinder 42 is provided with a grinding member 5 for grinding the brake pad surface.

[0015] Among them, the limiting component 2 refers to the assembly set at the bottom of the box for fixing the workpiece, which can be implemented by a moving block structure with a drive mechanism, and the clamping distance can be adjusted by lateral displacement. The strip opening 3 refers to the through slot opened along the length of the box, which can be implemented by a straight slot structure, providing movement space for the moving assembly. The multi-section telescopic cylinder 42 refers to the power element with a multi-stage telescopic structure, which can be implemented by a multi-stage piston structure driven by hydraulic or pneumatic pressure, and is used to adjust the height position of the grinding component. The grinding component 5 refers to the assembly that performs cutting processing on the surface of the workpiece, which can be implemented by a rotary grinding head or a strip grinding wheel structure, and the surface treatment is completed by contact friction.

[0016] Specifically, when the brake pads are placed inside the housing, the limiting component adjusts the clamping distance laterally to accommodate the workpiece width. When the motor-driven screw rotates, it causes the moving blocks on both sides to move synchronously in opposite directions along the strip-shaped opening, thereby adjusting the lateral coverage of the grinding component. The multi-section telescopic cylinder adjusts the height of the grinding component according to the workpiece thickness, ensuring uniform distribution of grinding pressure. Driven by the cylinder, the grinding component contacts the workpiece surface and completes the grinding process through reciprocating motion.

[0017] Compared to existing technologies, traditional devices use clamping mechanisms with fixed spacing, while this solution achieves dynamic adjustment of the clamping range through movable limit blocks. Existing equipment typically uses a single-position grinding head, while this solution achieves synchronous adjustment between two positions through a screw drive mechanism. Conventional devices require manual adjustment of the processing height, while this solution achieves automated height control through multi-stage telescopic cylinders.

[0018] Through the above technical solution, this application can adapt to the processing requirements of brake pads of different sizes. The mechanical transmission mechanism enables automatic adjustment of the clamping distance and processing position, effectively improving the equipment's versatility. The movable design of the limiting components enhances the workpiece's fixing stability, preventing positional deviation during processing. The integrated adjustment mechanism simplifies the operation process and reduces the technical requirements for operators.

[0019] Please continue reading. Figure 1 and Figure 3As shown, in one embodiment of the present invention, the limiting member 2 includes an L-shaped limiting block 21. The bottom surface of the grinding box 1 is provided with strip grooves 22 at both ends. A second motor (not shown) is provided in the strip grooves 22. The output end of the second motor is connected to a second screw 23. A second moving block 24 is spirally sleeved on the second screw 23. The L-shaped limiting block 21 is provided on the upper surface of the second moving block 24. An anti-slip layer 25 is provided on the inner side of the vertical plate of the L-shaped limiting block 21.

[0020] The L-shaped limiting block 21 is a right-angled structural component with both vertical and horizontal surfaces, which can be made of cast aluminum alloy. It achieves lateral limiting by contacting the side of the brake pad with its vertical surface. The strip groove 22 is a U-shaped channel extending along the length of the grinding housing, which can be machined using a CNC milling machine. It houses the transmission mechanism of the second motor and the second screw. The second motor is the power device that drives the screw to rotate; it can be a stepper motor for precise displacement control. The second moving block is a sliding component with internal threads, which can be made of copper-based self-lubricating bearing material. It achieves linear movement through threaded engagement with the second screw. The anti-slip layer 25 is a friction-enhancing material attached to the contact surface of the limiting block; it can be vulcanized rubber or a polyurethane coating. It increases surface roughness to prevent brake pad slippage.

[0021] Specifically, when the brake pad is placed inside the grinding chamber, the second motor drives the second screw to rotate, causing the second moving block to move along the strip groove. This causes the two sets of L-shaped limiting blocks on the left and right to move towards the center synchronously until the anti-slip layer tightly adheres to the two edges of the brake pad. During this process, the vertical surface of the L-shaped limiting block provides lateral constraint on the brake pad, while the horizontal surface supports the bottom of the brake pad. The symmetrical movement of the two sets of limiting blocks can accommodate brake pads of different widths. The anti-slip layer generates static friction during clamping, effectively counteracting the lateral vibrations generated during the grinding operation.

[0022] Compared to existing technologies, traditional fixed clamps require manual replacement of limit blocks of different specifications. This solution, however, achieves automatic adjustment of the limit blocks through a motor-driven screw transmission mechanism, eliminating the need for clamp replacement. Existing technologies using flat clamping plates are prone to instability due to insufficient contact area, while the L-shaped limit block's bidirectional limiting structure can simultaneously constrain the vertical and horizontal degrees of freedom of the brake pads.

[0023] Through the above technical solution, this application can automatically adjust the limit spacing according to the width of the brake pad, which significantly improves the adaptability of the equipment to products of different sizes; the bidirectional limit structure of the L-shaped limit block, together with the anti-slip layer, effectively suppresses the workpiece displacement during the grinding process and ensures the processing accuracy; the motor-driven adjustment method simplifies the operation process and can complete the size adaptation without the need for professional technicians.

[0024] Please continue reading. Figure 1 As shown, in one embodiment of the present invention, a telescopic protective sleeve 26 is provided at the upper end of the strip groove 22.

[0025] The telescopic protective sleeve 26 refers to a retractable structure covering the opening of the strip-shaped groove. It can be implemented using a corrugated tube or a folded sleeve structure, and its material can be rubber, silicone, or flexible plastic. This protective sleeve adapts to the displacement of the moving block through telescopic deformation, preventing external debris or grinding dust from entering the groove.

[0026] Specifically, the telescopic protective sleeve is arranged along the length of the strip-shaped groove, with its two ends fixed to the edge of the groove opening and the top of the moving block, respectively. When the second motor drives the second screw to move the moving block along the groove, the protective sleeve extends and retracts synchronously with the moving block, always keeping the groove opening closed. For example, when the moving block slides towards one end of the groove, the folded portion of the protective sleeve unfolds to cover the newly opened area; when moving in the opposite direction, the folded portion retracts to avoid interference. Thus, metal shavings, dust, and other contaminants generated during grinding are blocked outside the groove, preventing debris from accumulating in the transmission area between the screw and the moving block.

[0027] Compared to existing technologies, traditional equipment typically features open-type grooves, allowing grinding debris to easily fall into the grooves and adhere to the screw threads or the surface of the moving block slide rails, leading to increased transmission resistance or even jamming. This application addresses this issue by adding a telescopic protective sleeve, which effectively isolates contaminants from entering while allowing the moving block to slide freely, preventing a decrease in transmission accuracy or accelerated component wear caused by debris accumulation.

[0028] Through the above technical solution, this application solves the problems of frequent maintenance and poor positioning stability caused by debris intrusion in the existing limiting mechanism. The sealing effect of the protective sleeve reduces the risk of foreign objects getting stuck between the screw and the moving block, ensuring that the limiting block maintains stable operation during adjustment, thereby improving the reliability of brake pad clamping and positioning, and reducing the frequency of equipment downtime for cleaning.

[0029] Please continue reading. Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the grinding component 5 includes a grinding belt 51, an L-shaped bracket 52 is provided at the end of the telescopic rod of the multi-section telescopic cylinder 42, a support block 53 is provided on the lower surface of the cross plate of the L-shaped bracket 52, a swing block 54 is provided on the lower surface of the support block 53 via a third motor, a support plate 55 is provided on the lower surface of the swing block 54, and the grinding belt 51 is provided on the lower surface of the support plate 55.

[0030] Among them, the L-shaped bracket 52 refers to a support component with vertical and horizontal extension structures, which can be implemented by welding or bolting metal plates, and is used to support the support block and adjust the horizontal position of the grinding belt.

[0031] Among them, the support block 53 refers to the rigid component connected to the bottom of the L-shaped bracket. It can be made of aluminum alloy or steel and is used to transmit the lifting and lowering action of the multi-section telescopic cylinder to the swing block.

[0032] The third motor refers to the power device that drives the swing block to rotate. Specifically, it can be implemented using a servo motor or a stepper motor. The angle of the swing block is controlled by a hinge structure to adapt to the surface of the brake pads with different curvatures.

[0033] Among them, the swing block 54 refers to the connecting component that can rotate around the hinge point. Specifically, it can be implemented by a metal block with bearings, and the tilt angle of the grinding belt can be changed by the drive of the third motor.

[0034] Among them, the support plate 55 refers to the mounting base plate for fixing the grinding belt. Specifically, it can be a steel plate with grooved surface. The grinding belt is fixed by bolts or buckles to ensure stability during the grinding process.

[0035] Specifically, a multi-section telescopic cylinder drives the L-shaped bracket to vertically raise and lower, adjusting the contact pressure between the grinding belt and the brake pad surface. A third motor, via a hinged structure, drives a swing block to rotate around a support block, creating different tilt angles between the support plate and the grinding belt to adapt to the curved contours of the brake pad. When the brake pad surface has curvature, the angle adjustment function of the swing block ensures that the grinding belt always maintains parallel contact with the surface to be processed, avoiding localized over-grinding or under-grinding. A dust collection hopper located inside the vertical plate of the L-shaped bracket connects to an external dust collection pipe, simultaneously adsorbing debris during grinding to prevent dust accumulation from affecting processing accuracy.

[0036] Compared to existing technologies, current grinding devices typically use grinding heads with fixed angles, making it difficult to adapt to the curved structure of brake pads. This solution, however, achieves dynamic adjustment of the grinding angle through the cooperation of a swing block and a third motor. Traditional equipment requires frequent changes of grinding heads of different specifications, while this solution, through the adjustable tilt function of the support plate, significantly improves the equipment's adaptability to brake pads of different curvatures. Furthermore, existing technologies require machine shutdown for dust cleaning, while this solution, through the integrated design of the dust collection hopper, enables grinding and cleaning to be performed simultaneously.

[0037] Through the above technical solutions, this application solves the problem of uneven grinding caused by the inability of existing equipment to adapt to curved brake pads. By adjusting the angle of the swing block, it ensures that the grinding belt and the brake pad surface are fully in contact, thus improving grinding accuracy. At the same time, the synchronous cleaning design of the dust collection bucket reduces the number of downtime cleanings and improves processing efficiency. The coordinated control of the multi-section telescopic cylinder and the third motor simplifies the operation process and reduces the technical requirements for operators.

[0038] Please continue reading. Figure 1As shown, in one embodiment of the present invention, a dust collection hopper 56 is provided on the inner side of the vertical plate of the L-shaped bracket 52. The dust collection hopper 56 is connected to the external dust collection pipe 57, and the dust collection hopper 56 is correspondingly provided to the polishing belt 51.

[0039] Among them, the dust collection hopper 56 refers to the dust collection structure installed on the inner side of the vertical plate of the L-shaped bracket. Specifically, it can be implemented using a conical or funnel-shaped metal shell, with its opening direction aligned with the working area of ​​the grinding belt, to directly capture scattered dust particles during the grinding process.

[0040] Among them, the suction pipe 57 refers to the pipe that connects the suction bucket to the external negative pressure equipment. Specifically, it can be implemented using a flexible corrugated pipe or a rigid plastic pipe. The dust collected by the suction bucket is transported to the filter device through the external negative pressure system.

[0041] The corresponding setting refers to the synchronization between the opening position of the dust collection hopper and the working trajectory of the grinding belt. This can be achieved through a linkage mechanism or a position sensor to ensure that the dust collection range always covers the contact area between the grinding belt and the brake pad.

[0042] Specifically, when the multi-section telescopic cylinder drives the grinding belt to contact the brake pad surface for grinding, the dust collection hopper moves synchronously with the L-shaped bracket. The dust generated during grinding is captured by the opening of the dust collection hopper during its dispersion and is continuously extracted through the connected suction pipe. The corresponding arrangement of the dust collection hopper and the grinding belt ensures that the dust collection area always covers the grinding work area, preventing dust from spreading inside the grinding chamber.

[0043] Compared to existing technologies, traditional equipment typically relies on independent dust removal devices or simple protective covers, resulting in low dust removal efficiency and a tendency for dust to be re-entrained. This solution integrates the dust collection bucket directly into the grinding mechanism, achieving zero-distance connection between the dust generation point and the collection point. Simultaneously, it utilizes an external negative pressure system to create directional airflow, significantly improving dust removal efficiency.

[0044] Through the above technical solution, this application solves the problems of equipment pollution and deterioration of the operating environment caused by dust accumulation during the grinding process, effectively maintains the cleanliness of the grinding box, reduces the impact of dust on the surface quality of brake pads, and at the same time reduces the frequency of manual cleaning and improves the continuous operation capability of the equipment.

[0045] The motor, multi-section telescopic cylinder, and grinding belt in this utility model are all existing technologies, which are already clearly understood by those skilled in the art, and will not be described in detail here.

[0046] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A brake pad surface grinding device, characterized in that: The device includes a grinding chamber. The lower surface of the grinding chamber is provided with a limiting member for clamping and limiting the brake pads. The upper surface of the grinding chamber has a strip-shaped opening. A first motor is installed in the strip-shaped opening. The output end of the first motor is connected to a first screw. Both the left and right ends of the first screw are spirally fitted with first moving blocks. A multi-section telescopic cylinder is embedded in the first moving block. The telescopic rod end of the multi-section telescopic cylinder is provided with a grinding element for grinding the surface of the brake pads.

2. The brake pad surface grinding device according to claim 1, characterized in that: The limiting component includes an L-shaped limiting block. The bottom surface of the grinding box is provided with strip grooves at both ends. A second motor is provided in the strip groove. The output end of the second motor is connected to a second screw. A second moving block is spirally sleeved on the second screw. The L-shaped limiting block is provided on the upper surface of the second moving block. An anti-slip layer is provided on the inner side of the vertical plate of the L-shaped limiting block.

3. The brake pad surface grinding device according to claim 2, characterized in that: A telescopic protective sleeve is provided at the upper end of the strip-shaped groove.

4. The brake pad surface grinding device according to claim 1, characterized in that: The grinding component includes a grinding belt. An L-shaped bracket is provided at the end of the telescopic rod of the multi-section telescopic cylinder. A support block is provided on the lower surface of the cross plate of the L-shaped bracket. A swing block is provided on the lower surface of the support block via a third motor. A support plate is provided on the lower surface of the swing block. The grinding belt is provided on the lower surface of the support plate.

5. The brake pad surface grinding device according to claim 4, characterized in that: The inner side of the vertical plate of the L-shaped bracket is provided with a dust suction hopper, which is connected to an external dust suction pipe and is correspondingly arranged with the grinding belt.

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