Polishing pad surface shape modification apparatus and method

Abstract

The application discloses a polishing disc surface shape trimming device and method, wherein the polishing disc surface shape trimming device comprises a base, a supporting disc is arranged on the base, a lower polishing disc can be mounted on the supporting disc, a cover disc is arranged above the supporting disc, an upper polishing disc can be mounted below the cover disc, a plurality of carrier discs are distributed between the lower polishing disc and the upper polishing disc, and a plurality of grinding wheels penetrating the carrier discs are arranged in each carrier disc. Compared with the prior art, the application provides an efficient, accurate, clean and adjustable disc surface trimming solution, helps to improve product quality and processing efficiency, and reduces resource waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical parts repair, in particular to a polishing disc surface shape trimming device and method. BACKGROUND

[0002] The polishing disc surface shape trimming device is a kind of equipment for trimming and polishing the surface of industrial products, which is widely used in various industries, including metal processing, ceramic manufacturing, glass industry, etc. These industrial products usually require high-precision surface quality, so the polishing disc surface shape trimming device plays a crucial role in modern manufacturing processes. The polishing disc needs to maintain good flatness and surface shape, and the material stability should be good, so during the part processing stage, heat treatment should be done well to fully eliminate stress, and the deformation of the polishing disc in the later stage is mainly caused by improper heat treatment. With the passage of time, the internal stress of the polishing disc gradually releases, which directly reflects the deformation of the polishing disc, and further leads to the decline of the quality of the polished product until it is out of specification. The upper polishing disc is suspended for a long time, and due to the action of gravity, the upper polishing disc will also deform. The outer edge of the polishing disc has relatively poor rigidity, and the suspended upper polishing disc will have a concave core phenomenon and poor flatness. Deformation caused by other reasons during use also needs to be corrected.

[0003] Usually, the polishing disc is disassembled or the entire equipment is sent back to the factory for regrinding and processing to obtain the required precision. For large polishing machines, the cost of maintenance work is extremely high, the time is long, the cost is large, and it has a great impact on the production of equipment users. Moreover, the existing polishing disc surface shape trimming device can only trim one side at a time, which limits the production efficiency. During the trimming and polishing process, a large amount of heat is generated by mechanical friction, which can easily cause the disc surface to overheat, thereby reducing the surface quality of the workpiece. The existing equipment lacks an effective cooling system, and since cooling water is needed during the trimming process, the existing device often has water pollution problems: the wastewater may contain a large amount of abrasive particles and cuttings, which can affect the trimming effect, and more water resources are needed to flush the wastewater, increasing the environmental burden.

[0004] Therefore, it is necessary to provide a polishing disc surface shape trimming device and method to solve the problems raised in the background. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a polishing disc surface shape trimming device, comprising a base, a support disc is provided on the base, a lower polishing disc is installed on the support disc, a cover disc is provided above the support disc, an upper polishing disc is installed below the cover disc, a plurality of carrier discs are distributed between the lower polishing disc and the upper polishing disc, and a plurality of sand wheels are installed in each carrier disc.

[0006] The base has a cavity, the center of the base is provided with a center column, the center column is rotatably provided with a rotating disc, the center column is provided with a driving motor capable of driving the rotating disc to rotate;

[0007] The rotating disc is circumferentially provided with a plurality of supporting balls, the supporting balls are attached to the bottom of the supporting disc, one of the supporting balls is connected to the rotating disc through an adjusting seat, and the adjusting seat can adjust the height through a bolt.

[0008] Further, as a preferred, the inside of the supporting disc is provided with an inner ring gear, the center of the supporting disc is rotatably provided with a gear, the outer wall of the carrier disc is provided with an outer ring gear, and the carrier disc is engaged with the supporting disc and the gear respectively, and the gear is connected to the rotating disc through a universal joint.

[0009] Further, as a preferred, the cover disc is supported by a plurality of support rods above the cover disc, an annular water inlet groove is supported by the plurality of support rods, a water inlet pipe is connected to the water inlet groove, and the bottom of the water inlet groove is connected to the cover disc through a plurality of liquid outlet pipes;

[0010] And the edge of the bottom of the supporting disc has a hollow drain hole.

[0011] Further, as a preferred, two downward hydraulic cylinders are fixed above the water inlet groove, the piston rods of the downward hydraulic cylinders penetrate the support rods and the cover disc to the bottom of the cover disc and are attached to the upper throwing disc.

[0012] Further, as a preferred, the base is circumferentially provided with three pairs of V-shaped distributed hydraulic support rods, the upper ends of the hydraulic support rods are connected to the bottom of the supporting disc.

[0013] Further, as a preferred, an inner side edge of the base is fixed with a circle of drainage grooves, a plurality of supporting springs are distributed in the drainage grooves.

[0014] Further, as a preferred, the center of the water inlet groove is rotatably provided with a blocking disc embedded between the bottom of the water inlet groove and the liquid outlet pipe, and the blocking disc is provided with a water outlet in the water inlet groove;

[0015] The blocking disc is fixed to the gear through a center shaft below the blocking disc.

[0016] A polishing disc surface shape modification method, comprising the following steps:

[0017] S1, adjusting the height of the adjusting seat to determine the inclination angle of the supporting disc;

[0018] S2, installing the supporting disc on the base, fixing the hydraulic support rods with the supporting disc, and fixing the universal joint with the gear;

[0019] S3, install the lower throwing disc on the support disc, evenly place the carrier disc on the lower throwing disc, and ensure that the carrier disc is engaged with the gear and the inner wall of the support disc;

[0020] S4, install the upper throwing disc below the cover disc, and install the cover disc above the support disc, and ensure that the lower throwing disc is coaxially aligned;

[0021] S5, adjust the pressure between the upper throwing disc, the grinding wheel and the lower throwing disc by adjusting the pressure of the lower hydraulic cylinder, so as to adapt to the intensity of the repair;

[0022] S6, open the water inlet pipe in the water inlet groove, and inject water into the repair area;

[0023] S7, start the driving motor to rotate the rotating disc, and the gear can drive the carrier disc to perform planetary motion, so that the grinding wheel simultaneously grinds the lower throwing disc and the upper throwing disc to achieve the purpose of repairing the disc, and because the support ball on the adjusting seat is not consistent in height with other support balls, the support disc performs a circular swing motion, so that the waste water can flow into the drain groove, and the clean water can flow out of the water outlet to ensure that the heat and abrasive materials and cuttings in the machining area can be timely removed.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] In the present application, a plurality of carrier discs and grinding wheels are used, which can simultaneously grind the surfaces of the lower throwing disc and the upper throwing disc, greatly improving the efficiency of disc repair, and the complex trajectory motion of the grinding wheel helps to evenly grind the entire disc surface, resulting in good face type effect, ensuring that each area can be properly repaired, thereby improving product quality.

[0026] In the present application, through the design of the water inlet groove, water pipe and drain groove, cooling water can be injected into the repair area in time, effectively removing the heat generated during machining, reducing the temperature, preventing the disc surface from overheating and wear, and the water can also remove the abrasive materials and cuttings, keeping the repair process clean. And the design of the rotating disc makes the support disc and the parts above it perform a circular swing motion, which helps to timely drain the waste water and keep the water quality of the repair area clean, and the design of the baffle disc and the water outlet ensures that the clean water can flow through the entire repair area before being discharged, so as to maximize the removal of heat and abrasive materials, avoid wasting water resources, and improve the precision and efficiency of the repair.

[0027] In the present application, the use of hydraulic support rods and support springs ensures the stability of the support disc, even when tilted, it will not deviate from the center, by adjusting the height of the adjusting seat, the height of the support ball can be flexibly controlled, the inclination angle of the support disc is appropriate, the water discharge can be changed, the greater pressure of the lower hydraulic cylinder can be adapted to the grinding process, and the heat can be removed in time. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A schematic diagram of the device for shaping the surface of a polishing disc.

[0029] Figure 2 This is a structural diagram of the support plate and the base;

[0030] Figure 3 This is a schematic diagram of the turntable structure;

[0031] Figure 4 This is a schematic diagram of the water inlet tank.

[0032] In the diagram: 1. Base; 2. Support plate; 21. Carrier plate; 22. Grinding wheel; 3. Cover plate; 4. Water inlet trough; 41. Water inlet pipe; 42. Lower liquid pipe; 43. Baffle plate; 44. Water outlet; 5. Support rod; 51. Lower hydraulic cylinder; 6. Lower throwing plate; 7. Upper throwing plate; 8. Gear; 9. Central shaft; 10. Central column; 11. Turntable; 12. Hydraulic support rod; 13. Drainage trough; 14. Support spring; 15. Support ball; 16. Adjustment seat; 17. Universal joint. Detailed Implementation

[0033] Please see Figure 1 and Figure 2 In this embodiment of the invention, the polishing disc surface shape trimming device includes a base 1, a support disc 2 on the base 1, a lower polishing disc 6 that can be installed on the support disc 2, a cover disc 3 above the support disc 2, an upper polishing disc 7 that can be installed below the cover disc 3, and a plurality of carrier discs 21 distributed between the lower polishing disc 6 and the upper polishing disc 7, each carrier disc 21 containing a plurality of grinding wheels 22 that pass through vertically.

[0034] In this embodiment, an internal gear ring is formed on the inner side of the support disk 2, and a gear 8 is rotatably provided at the center of the support disk 2. An external gear ring is formed on the outer wall of the carrier disk 21, and the carrier disk 21 meshes with both the support disk 2 and the gear 8. That is, rotating the gear 8 can drive the carrier disk 21 to perform planetary motion, and the grinding wheel 22 performs complex motion under the drive of the carrier disk 21. The grinding wheel 22 grinds the lower polishing disk 6 and the upper polishing disk 7 simultaneously to achieve the purpose of polishing the disk. In order to ensure that every area of ​​the working surface of the large disk can be polished, the distribution diameter of the grinding wheel 22 must exceed the inner and outer circles of the lower polishing disk 6 and the upper polishing disk 7.

[0035] In this embodiment, an annular water inlet trough 4 is supported above the cover plate 3 by multiple support rods 5. The water inlet trough 4 is connected to an oil inlet pipe 41, and the bottom of the water inlet trough 4 is connected to the cover plate 3 through multiple liquid drain pipes 42.

[0036] Furthermore, the bottom edge of the support plate 2 has a perforated drainage hole. By injecting water into the water inlet trough 4, water can flow into the grinding area between the lower polishing plate 6 and the upper polishing plate 7, which can promptly remove the heat from the processing area and the detached abrasive and chips, and drain them into the base 1 through the drainage hole at the bottom of the support plate 2.

[0037] In this embodiment, two downward hydraulic cylinders 51 are fixed above the water inlet tank 4. The piston rods of the downward hydraulic cylinders 51 pass through the support rod 5 and the cover plate 3 to the bottom of the cover plate 3 and are attached to the upper polishing plate 7. By adjusting the pressure of the downward hydraulic cylinders 51 on the upper polishing plate 7, the pressure between the upper polishing plate 7, the grinding wheel 22, and the lower polishing plate 6 can be adjusted to ensure that the friction force reaches the appropriate level for grinding.

[0038] In this embodiment, the base 1 has a cavity, a central column 10 is provided at the center of the base 1, a turntable 11 is rotatably provided on the central column 10, a drive motor capable of driving the turntable 11 to rotate is provided in the central column 10, and the gear 8 is connected to the turntable 11 through a universal joint 17.

[0039] Please see Figure 3 In this embodiment, a plurality of support balls 15 are circumferentially distributed on the turntable 11. The support balls 15 can fit against the bottom of the support disk 2. One of the support balls 15 is connected to the turntable 11 through an adjusting seat 16, the adjusting seat 16 of which can be adjusted in height by bolts. When the height of the adjusting seat 16 makes the support ball 15 higher than the other support balls 15, the support disk 2 will tilt.

[0040] In this embodiment, three pairs of V-shaped hydraulic support rods 12 are distributed around the inner circumference of the base 1, and the upper ends of the hydraulic support rods 12 are connected to the bottom of the support plate 2. The hydraulic support rods 12 ensure that the support plate 2 does not deviate from the center when tilted.

[0041] In this embodiment, a drainage groove 13 is fixed on the inner side of the upper part of the base 1, and multiple support springs 14 are distributed in the drainage groove 13. Wastewater discharged from the drainage hole at the bottom of the support plate 2 can fall into the drainage groove 13 for unified collection, and the support springs 14 can support the edge of the support plate 2 to ensure the stability of the support plate 2.

[0042] In other words, the support plate 2 and the base 1 are elastically connected and can be tilted without deviating from the center. When the turntable 11 rotates, it will cause the support plate 2 and the components above it to swing in a circular motion, so that the support plate 2 tilts in each direction in turn. This is conducive to the timely discharge of wastewater generated during the grinding of the lower and upper grinding plates 6 and 7, ensuring that the water between the lower and upper grinding plates 6 and 7 is water with fewer impurities, so as to ensure the accuracy and efficiency of the grinding.

[0043] Please see Figure 4In this embodiment, the center of the water inlet tank 4 is rotatably provided with a baffle 43 embedded between the bottom of the water inlet tank 4 and the liquid outlet 42, and the baffle 43 has a water outlet 44 in the water inlet tank 4.

[0044] The lower part of the baffle 43 is fixed to the gear 8 via the central shaft 9.

[0045] The direction of the water outlet 44 is opposite to that of the adjusting seat 16. That is, the direction of the water outlet 44 is always towards the upward tilt of the support plate 2. The drainage direction of the support plate 2 is opposite, ensuring that the water flowing into the lower throwing plate 6 and the upper throwing plate 7 is opposite to the direction of the water discharged. This allows clean water to flow through the entire lower throwing plate 6 and the upper throwing plate 7 before being discharged, so that the clean water can carry away the heat and the detached abrasive and chips from the processing area before being discharged, thus preventing the clean water from being discharged and improving the water utilization efficiency.

[0046] In this embodiment, the method for shaping the surface of the polishing pad includes the following steps:

[0047] S1. Adjust the height of the adjusting seat 16 to ensure that the tilt angle of the support plate 2 is appropriate;

[0048] S2. Install the support plate 2 on the base 1, fix the hydraulic support rod 12 to the support plate 2, and fix the universal joint 17 to the gear 8;

[0049] S3. Install the lower throwing plate 6 on the support plate 2, and evenly place the carrier plate 21 on the lower throwing plate 6 to ensure that the carrier plate 21 meshes with the gear 8 and the inner wall of the support plate 2.

[0050] S4. Install the upper throwing plate 7 below the cover plate 3, and install the cover plate 3 above the support plate 2, ensuring that it is coaxially aligned with the lower throwing plate 6.

[0051] S5. Adjust the pressure between the upper polishing plate 7, the grinding wheel 22, and the lower polishing plate 6 by adjusting the pressure of the lower hydraulic cylinder 51 to adapt to the grinding force.

[0052] S6. Open the water inlet pipe 41 in the water inlet tank 4 and inject water into the repair and grinding area;

[0053] S7. Start the drive motor to make the turntable 11 rotate. The gear 8 can drive the carrier disc 21 to perform planetary motion. The grinding wheel 22 performs complex motion under the drive of the carrier disc 21. The grinding wheel 22 grinds the lower polishing disc 6 and the upper polishing disc 7 at the same time to achieve the purpose of polishing the disc. At the same time, because the support ball 15 on the adjusting seat 16 is not at the same height as other support ball 15, the support disc 2 performs a circular swinging motion, so that the wastewater can flow into the drainage trough 13, and the clean water can flow out from the outlet 44, so as to ensure that the heat of the processing area and the abrasive and chips can be carried away in time.

[0054] Furthermore, the higher the height of the adjusting seat 16, the greater the tilt angle of the support plate 2, and the faster the drainage speed. This allows for a grinding process that adapts to the greater pressure of the downward hydraulic cylinder 51, ensuring that heat can be carried away in a timely manner.

[0055] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for modifying the surface shape of a polishing disc, comprising a base (1), characterised in that, The base (1) is provided with a support disc (2), the support disc (2) is used for installing a lower throwing disc (6), the support disc (2) is provided with a cover disc (3) above, the cover disc (3) is used for installing an upper throwing disc (7), a plurality of carrier discs (21) are distributed between the lower throwing disc (6) and the upper throwing disc (7), a plurality of upper and lower penetrating grinding wheels (22) are arranged in each carrier disc (21); The base (1) has a cavity, the center of the base (1) is provided with a center column (10), the center column (10) is rotatably provided with a rotating disc (11), the center column (10) is provided with a driving motor capable of driving the rotating disc (11) to rotate; A plurality of support balls (15) are circumferentially distributed on the rotating disc (11), the support balls (15) are attached to the bottom of the support disc (2), one of the support balls (15) is connected to the rotating disc (11) through an adjusting seat (16), and the adjusting seat (16) can adjust the height through a bolt; The support disc (2) is provided with an inner ring gear on the inner side, the center of the support disc (2) is rotatably provided with a gear (8), the outer wall of the carrier disc (21) is provided with an outer ring gear, and the carrier disc (21) is respectively engaged with the support disc (2) and the gear (8), and the gear (8) is connected to the rotating disc (11) through a universal joint (17); The cover disc (3) is supported by a plurality of support rods (5) to support an annular water inlet groove (4) above, the water inlet groove (4) is connected with a water inlet pipe (41), and the bottom of the water inlet groove (4) is connected to the cover disc (3) through a plurality of lower liquid pipes (42); And the edge of the bottom of the support disc (2) has a hollow drain hole; The center of the water inlet groove (4) is rotatably provided with a blocking disc (43) embedded between the bottom of the water inlet groove (4) and the lower liquid pipe (42), and the blocking disc (43) is provided with a water outlet (44) in the water inlet groove (4); The blocking disc (43) is fixed to the gear (8) through a center shaft (9) below.

2. The polishing pad surface topography trimming apparatus of claim 1, wherein, Two downward hydraulic cylinders (51) are fixed on the water inlet groove (4), the piston rod of the downward hydraulic cylinder (51) penetrates the support rod (5) and the cover disc (3) to the bottom of the cover disc (3) and is attached to the upper throwing disc (7).

3. The polishing pad surface topography trimming apparatus of claim 2, wherein, Three pairs of V-shaped hydraulic support rods (12) are circumferentially distributed in the base (1), and the upper ends of the hydraulic support rods (12) are connected to the bottom of the support disc (2).

4. The polishing pad surface topography trimming apparatus of claim 3, wherein, The inner side of the top of the base (1) is fixed with a row of drainage grooves (13), and a plurality of supporting springs (14) are distributed in the drainage grooves (13).

5. A method of modifying the surface shape of a polishing pad using the polishing pad surface shape modifying apparatus according to claim 4, characterized by, The method comprises the following steps: S1, adjust the height of the adjusting seat (16) to determine the inclination angle of the support disc (2); S2, install the support disc (2) on the base (1), fix the hydraulic support rod (12) with the support disc (2), and fix the universal joint (17) with the gear (8); S3, install the lower throwing disc (6) on the support disc (2), evenly place the carrier disc (21) on the lower throwing disc (6), and ensure that the carrier disc (21) is engaged with the gear (8) and the inner wall of the support disc (2); S4, install the upper throwing disc (7) below the cover disc (3), install the cover disc (3) above the support disc (2), and ensure coaxial alignment with the lower throwing disc (6); S5, adjust the pressure between the upper throwing disc (7), the grinding wheel (22) and the lower throwing disc (6) by adjusting the pressure of the lower pressing hydraulic cylinder (51) to adapt to the intensity of the grinding; S6, open the water inlet pipe (41) in the water inlet tank (4) and inject water into the grinding area; S7, start the drive motor to rotate the rotating disc (11), the gear (8) can drive the carrier disc (21) to make planetary motion, so that the grinding wheel (22) grinds the lower throwing disc (6) and the upper throwing disc (7) at the same time, and the purpose of repairing the disc is achieved. At the same time, due to the fact that the support ball (15) on the adjusting seat (16) is not consistent in height with other support balls (15), the support disc (2) makes a circular swing motion, so that the waste water can flow into the drain tank (13), and the clean water can flow out from the water outlet (44), so as to ensure that the heat and abrasive, cutting chips in the processing area can be removed in time.

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