A profiling grinding device

Abstract

The utility model relates to the field of workpiece polishing processing, concretely relates to a profiling polishing device, including polishing subassembly and be used for installing the support of polishing subassembly, the support includes base and installs the front support and rear support on the base, the base below is provided with the wheel subassembly who moves along workpiece datum plane, be provided with telescopic mechanism on the front support, and the telescopic mechanism includes pivot, the guide rod who is worn on the pivot and the spring who sets up on the guide rod, be provided with the adjusting mechanism who is used for adjusting the angle of polishing subassembly on the rear support, the utility model restraints device motion trajectory on the workpiece surface geometry feature, makes the polishing piece passive recurrence workpiece appearance, thereby realizes profiling polishing operation, reduces the influence of artificial factor, and provides the pre -tightening force through the spring, realizes the real -time compensation of workpiece processing surface local undulation, guarantees stable contact pressure again, guarantees the polishing quality.

Description

Technical Field

[0001] This utility model relates to the field of workpiece grinding and processing, and specifically to a contour grinding device. Background Technology

[0002] Current product manufacturing and repair processes involve numerous technical steps related to welding and grinding, which are crucial to the product's sealing performance and overall quality. However, existing technologies present some significant problems and challenges, particularly in the treatment of locally machined surfaces and the repair of dynamic seals.

[0003] Firstly, for situations where welded plugs are required on partially machined product surfaces, traditional processes typically rely on manual grinding of the weld seam after the plug welding is completed to achieve a sealing standard. Secondly, for certain dynamic seals that are in constant relative motion with the seal, wear is particularly severe. These seals are often difficult to disassemble and return to the factory for repair on-site, making on-site repair a common practice. However, in the aforementioned scenarios of grinding welded plugs on partially machined surfaces and on-site repair of dynamic seals, the manual grinding process also faces significant challenges. On the one hand, manual grinding is labor-intensive, requiring a high level of skill and experience from the operators; on the other hand, due to the complex and variable on-site environment, the grinding quality is difficult to guarantee, thus affecting the repair effect and service life of the seal.

[0004] More importantly, current grinding devices cannot perform synchronous contour grinding based on the geometric features of the workpiece surface. This results in deviations in the grinding trajectory, poor grinding accuracy, and severely impacts the grinding effect, failing to meet practical application requirements. Therefore, there is an urgent need to develop a contour grinding device to reduce the influence of human factors and improve grinding efficiency and quality stability. Summary of the Invention

[0005] To address the problem that current grinding devices cannot perform synchronous contour grinding based on the geometric features of the workpiece surface, resulting in deviations in the motion trajectory, poor grinding accuracy, and severely impacting the grinding effect, this invention proposes a contour grinding device. This device constrains the motion trajectory of the device to the geometric features of the workpiece surface, allowing the grinding disc to passively reproduce the workpiece shape, thereby achieving contour grinding and reducing the influence of human factors. Furthermore, by providing preload through a spring, real-time compensation for local undulations on the workpiece's machined surface is achieved, while maintaining stable contact pressure and ensuring grinding quality.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A contour grinding device includes a grinding assembly and a bracket for mounting the grinding assembly. The bracket includes a base and a front bracket and a rear bracket mounted on the base. A wheel assembly is disposed below the base. A telescopic mechanism is provided on the front bracket, the telescopic mechanism including a rotating shaft, a guide rod passing through the rotating shaft, and a spring sleeved on the guide rod. An adjustment mechanism for adjusting the angle of the grinding assembly is provided on the rear bracket. When the operator pushes the device along the workpiece reference surface, the movement trajectory of the device is constrained to the geometric features of the workpiece surface, so that the grinding assembly passively reproduces the shape of the workpiece, realizing contour grinding operation.

[0007] Furthermore, the front support has two lugs at its top, and the rotating shaft is rotatably mounted on the two lugs. A clearance hole is also provided at the center of the top of the front support. The upper end of the guide rod passes through the rotating shaft and is inserted into the clearance hole. The lower end of the guide rod passes through the rotating shaft and has a limiting platform. Both ends of the spring abut against the limiting platform and the rotating shaft, respectively. The grinding assembly has a front clamp, and the limiting platform at the lower end of the guide rod is connected to the front clamp via a pin. The upper and lower ends of the guide rod abut against the spring via the rotating shaft and the limiting platform, respectively, ensuring the stability of the grinding disc during the floating process.

[0008] Furthermore, a nut is provided above the rotating shaft, and the nut is threaded onto the guide rod.

[0009] Furthermore, the adjustment mechanism includes adjustment rods symmetrically distributed on both sides of the grinding assembly, an arc-shaped slot is provided on the rear bracket, one end of the adjustment rod passes through the arc-shaped slot and is threaded with a nut; the grinding assembly is also provided with a rear clamp, and the other end of the adjustment rod is fixed on the rear clamp.

[0010] Furthermore, the rear support is also provided with angle scale lines distributed along the arc direction of the arc-shaped groove. The arc-shaped groove and angle scale lines help operators quickly and accurately adjust the grinding angle.

[0011] Furthermore, the wheel assembly includes an axle rotatably mounted on a base, with wheels at both ends. The base also has a mounting groove at its bottom, within which a strong magnet is installed. The strong magnet allows the device to be firmly attached to the workpiece reference surface. Simultaneously, the wheels facilitate movement of the device along the workpiece reference surface, enabling relative movement between the device and the workpiece machining surface.

[0012] Furthermore, a lower limit rod is provided on the front bracket. The lower limit rod on the front bracket effectively limits the downward stroke of the guide rod, avoiding the risk of damage caused by excessive pressing of the grinding disc into the workpiece.

[0013] Furthermore, the polishing assembly includes a polishing disc and a motor for driving the polishing disc.

[0014] Furthermore, two rear supports are provided, with a handle positioned between them. This allows the operator to more easily control the movement of the device.

[0015] The beneficial effects of this utility model through the above technical solution are as follows: 1. The contour grinding device provided by this utility model has a structure including a grinding component, a telescopic mechanism, and an adjustment mechanism. A wheel assembly is provided under the support, which supports the device to move along the workpiece reference surface, easily realizing the relative movement between the device and the workpiece processing surface. When the operator pushes the device along the reference surface, the movement trajectory of the device is constrained to the geometric features of the workpiece surface, so that the grinding component passively reproduces the shape of the workpiece. That is, the workpiece is used as a mold, and the grinding component in the device processes the shape accordingly, thereby realizing contour grinding operation, reducing the influence of human factors, and the flatness of the workpiece surface after grinding is better, ensuring the grinding quality and expanding the application space of contour grinding.

[0016] 2. In this utility model, the spring provides preload. On the one hand, the spring preload is transmitted to the grinding assembly through the guide rod, so that the grinding assembly can compensate for local undulations such as pits and bosses on the workpiece surface in real time during the movement of the wheel assembly, thus ensuring the grinding quality. On the other hand, it ensures that the contact pressure between the grinding assembly and the workpiece surface is stable, effectively avoiding workpiece damage caused by overload. Attached Figure Description

[0017] Figure 1 This utility model provides a three-dimensional contour grinding device. Figure 1 ; Figure 2 This utility model provides a three-dimensional contour grinding device. Figure 2 ; Figure 3 This is a schematic diagram of the telescopic mechanism in a contour grinding device according to this utility model.

[0018] The numbers in the attached diagram are: 1. Bracket; 1-1. Base; 1-2. Rear bracket; 1-3. Front bracket; 1-4. Lower limit rod; 1-1-1. Axle; 1-1-2. Wheel; 1-1-3. Mounting slot; 1-1-4. Strong magnet block; 2. Adjusting rod; 3. Rear clamp; 4. Guide rod; 5. Rotating shaft; 6. Spring; 7. Pin; 8. Front clamp; 9. Grinding disc; 10. Nut 1. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-3As shown, this embodiment provides a contour grinding device, including a grinding assembly and a bracket 1 for mounting the grinding assembly. The bracket 1 includes a base 1-1 and a front bracket 1-3 and a rear bracket 1-2 mounted on the base 1-1. A wheel assembly that moves along the workpiece reference surface is provided below the base 1-1. A telescopic mechanism is provided on the front bracket 1-3, which includes a rotating shaft 5, a guide rod 4 passing through the rotating shaft 5, and a spring 6 sleeved on the guide rod 4. An adjustment mechanism for adjusting the angle of the grinding assembly is provided on the rear bracket 1-2.

[0020] The contour grinding device provided in this embodiment has a structure including a grinding component, a telescopic mechanism, and an adjustment mechanism. A wheel assembly is provided under the support 1. The wheel assembly supports the movement of the device along the workpiece reference surface, easily realizing the relative movement between the device and the workpiece processing surface. When the operator pushes the device along the reference surface, the movement trajectory of the device is constrained to the geometric features of the workpiece surface, so that the grinding component passively reproduces the shape of the workpiece. That is, the workpiece is used as a mold, and the grinding component in the device processes the shape accordingly, thereby realizing contour grinding operation, reducing the influence of human factors, and the flatness of the workpiece surface after grinding is better, thus expanding the application space of contour grinding.

[0021] In this utility model, the front bracket 1-3 and the rear bracket 1-2 are arranged separately, which facilitates functional partitioning. The front bracket 1-3 carries the telescopic mechanism, and the rear bracket 1-2 is equipped with an adjustment mechanism, which reduces assembly complexity.

[0022] In this invention, spring 6 provides preload. On the one hand, the preload of spring 6 is transmitted to the grinding assembly through guide rod 4, so that the grinding assembly can compensate for local undulations such as pits and bosses on the workpiece surface in real time during the movement of the wheel assembly, thus ensuring the grinding quality. On the other hand, it ensures that the contact pressure between the grinding assembly and the workpiece surface is stable, effectively avoiding workpiece damage caused by overload.

[0023] In this invention, the front support 1-3 has two ear seats at its top, and the rotating shaft 5 is rotatably mounted on the two ear seats. A clearance hole is also provided at the center of the top of the front support 1-3. The upper end of the guide rod 4 passes through the rotating shaft 5 and is inserted into the clearance hole; the lower end of the guide rod 4 passes through the rotating shaft 5 and is provided with a limiting platform. The two ends of the spring 6 abut against the limiting platform and the rotating shaft 5 respectively. The grinding assembly has a front clamp 8, and the limiting platform at the lower end of the guide rod 4 is connected to the front clamp 8 via a pin 7. The upper and lower ends of the guide rod 4 abut against the spring 6 via the rotating shaft 5 and the limiting platform respectively, ensuring the stability of the grinding disc 9 during floating. Simultaneously, the front clamp 8 and the pin 7 on the grinding assembly act as connecting parts, making the connection between the grinding disc 9 and the guide rod 4 more secure and reliable, thus improving the safety of the grinding operation.

[0024] It is worth mentioning that a nut 10 is provided above the rotating shaft 5. The nut 10 is threaded onto the guide rod 4. Tightening the nut 10 clockwise will increase the compression of the spring 6 and increase the preload, which is suitable for rough grinding conditions that require high cutting forces. Loosening the nut 10 counterclockwise will reduce the preload, which is suitable for precision grinding. This design provides the flexibility to quickly adapt to different workpieces.

[0025] In this embodiment, the adjustment mechanism includes adjustment rods 2 symmetrically distributed on both sides of the grinding assembly. An arc-shaped groove is provided on the rear support 1-2, and one end of the adjustment rod 2 passes through the arc-shaped groove and is threadedly connected to a nut. A rear clamp 3 is also provided on the grinding assembly, and the other end of the adjustment rod 2 is fixed to the rear clamp 3. Furthermore, the rear support 1-2 is also provided with angle scale lines distributed along the arc direction of the arc-shaped groove. The arc-shaped groove and angle scale lines help the operator quickly and accurately adjust the grinding angle, and the nut can also fix the position of the adjustment rod 2, ensuring that the adjusted angle remains stable and improving the accuracy and reliability of the grinding operation.

[0026] In this embodiment, the wheel assembly includes an axle 1-1-1, which is rotatably mounted on a base 1-1. Wheels 1-1-2 are located at both ends of the axle 1-1-1. A mounting groove 1-1-3 is also provided at the bottom of the base 1-1, and a strong magnet 1-1-4 is disposed within the mounting groove 1-1-3. The design of the wheel assembly, including the axle 1-1-1, the wheels 1-1-2, and the strong magnet 1-1-4 within the mounting groove 1-1-3, allows the device to firmly adhere to the workpiece reference surface. Simultaneously, the placement of the wheels 1-1-2 facilitates flexible movement of the device along the workpiece reference surface, easily achieving relative movement between the device and the workpiece machining surface, thereby smoothly completing the contour grinding operation.

[0027] In this embodiment, a lower limit rod 1-4 is provided on the front bracket 1-3. The lower limit rod 1-4 on the front bracket 1-3 effectively limits the downward stroke of the guide rod 4, avoids the risk of damage caused by the grinding disc 9 being excessively pressed into the workpiece, protects the integrity of the workpiece surface, and ensures the safety of the grinding operation.

[0028] In this embodiment, the polishing assembly includes a polishing disc 9 and a motor for driving the polishing disc 9. The output shaft of the motor is connected to the polishing disc 96, thereby driving the rotation of the polishing disc 9.

[0029] In this embodiment, two rear supports 1-2 are provided, and a handle is provided between the two rear supports 1-2. The design of having two rear supports 1-2 and a handle between them makes it easier for the operator to control the movement of the device.

[0030] The working principle of this utility model is as follows: First, the installation and initial position of the grinding disc 9: After installation, the grinding disc 9 is lower than the bottom surface of the base 1-1. This ensures that when the base 1-1 is pressed against the workpiece reference surface via the wheel 1-1-2, the grinding disc 9 will pre-contact the workpiece machining surface. At this point, downward force is applied to make the wheel 1-1-2 fully press against the workpiece reference surface, the spring 6 is compressed, the guide rod 4 slides within the rotating shaft 5, the spring 6 provides preload, and the grinding disc 9 obtains a stable cutting force.

[0031] Grinding process: The operator pushes the device, and the wheels 1-1-2 move along the workpiece reference surface, driving the entire device to move. At the same time, the strong magnet 1-1-4 ensures that the device can firmly adhere to the workpiece reference surface for stable movement. When the operator pushes the device along the reference surface, the movement trajectory of the device is constrained to the geometric features of the workpiece surface. The movement trajectory of the grinding disc 9 is restricted to the contour of the workpiece surface, so that the grinding disc 9 passively reproduces the shape of the workpiece. That is, the workpiece is used as a mold, and the grinding disc 9 follows the shape to achieve contour grinding. During the grinding process, excessive feed rate should be avoided at one time.

[0032] Grinding quality inspection: Use specialized inspection tools, such as a template or feeler gauge, to check the fit against the ground surface. If the grinding is not done properly, the grinding operation must be repeated until the inspection is passed.

[0033] In summary, the key improvements of this utility model are as follows: the device moves along the workpiece reference surface to achieve relative movement between the device and the workpiece machining surface. When the operator pushes the device along the reference surface, the movement trajectory of the device is constrained to the geometric features of the workpiece surface, so that the grinding component passively reproduces the shape of the workpiece. That is, the workpiece is used as a mold, and the grinding component in the device follows the shape to achieve contour grinding operation and reduce the influence of human factors. In addition, the preload provided by the spring realizes real-time compensation for local undulations of the workpiece machining surface, ensures stable contact pressure, guarantees grinding quality, and avoids workpiece damage.

[0034] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A profiling sander device, characterized in that, The device includes a grinding assembly and a bracket (1) for mounting the grinding assembly. The bracket (1) includes a base (1-1) and a front bracket (1-3) and a rear bracket (1-2) mounted on the base (1-1). A wheel assembly that moves along the workpiece reference surface is provided below the base (1-1). A telescopic mechanism is provided on the front bracket (1-3). The telescopic mechanism includes a rotating shaft (5), a guide rod (4) passing through the rotating shaft (5), and a spring (6) sleeved on the guide rod (4). An adjustment mechanism for adjusting the angle of the grinding assembly is provided on the rear bracket (1-2).

2. A profiling sander according to claim 1, characterized in that The front bracket (1-3) is provided with two ear seats on its top. The rotating shaft (5) is rotatably mounted on the two ear seats. The front bracket (1-3) is also provided with a clearance hole in the center of its top. The upper end of the guide rod (4) passes through the rotating shaft (5) and is inserted into the clearance hole. The lower end of the guide rod (4) passes through the rotating shaft (5) and is provided with a limiting platform. The two ends of the spring (6) abut against the limiting platform and the rotating shaft (5) respectively. The grinding assembly is provided with a front clamp (8). The limiting platform at the lower end of the guide rod (4) is connected to the front clamp (8) through a pin (7).

3. A profiling sander according to claim 2, wherein, A nut (10) is provided above the rotating shaft (5), and the nut (10) is threaded onto the guide rod (4).

4. A profiling sander device according to claim 1, characterized in that The adjustment mechanism includes adjustment rods (2) symmetrically distributed on both sides of the grinding assembly. An arc-shaped slot is provided on the rear bracket (1-2). One end of the adjustment rod (2) passes through the arc-shaped slot and is threaded with a nut. The grinding assembly is also provided with a rear clamp (3). The other end of the adjustment rod (2) is fixed on the rear clamp (3).

5. A profiling sander according to claim 4, wherein, The rear bracket (1-2) is also provided with angle scale lines distributed along the arc direction of the arc-shaped slot.

6. A profiling sander device according to claim 1, characterized in that The wheel assembly includes an axle (1-1-1), which is rotatably mounted on a base (1-1), and wheels (1-1-2) are provided at both ends of the axle (1-1-1); a mounting groove (1-1-3) is also provided at the bottom of the base (1-1), and a strong magnet block (1-1-4) is provided in the mounting groove (1-1-3).

7. A profiling sander device according to claim 1, characterized in that The front bracket (1-3) is provided with a lower limit rod (1-4).

8. A profiling sander device according to claim 1, characterized in that The polishing assembly includes a polishing disc (9) and a motor for driving the polishing disc (9).

9. A profiling sander device according to claim 1, characterized in that The rear support (1-2) is provided in two parts, and a handle is provided between the two rear supports (1-2).

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