Upper millstone capable of realizing regional pressure regulation and pressure regulation method of upper millstone

Abstract

The invention discloses an upper grinding disc capable of achieving regional pressure adjustment and a pressure adjustment method of the upper grinding disc. The upper grinding disc capable of achieving regional pressure adjustment comprises an outer pressing ring, an inner pressing disc, a connecting assembly and a pressure adjustment device. The outer pressing ring is connected with the connecting assembly, the connecting assembly is connected with the pressure adjusting device so that the pressure between the outer pressing ring and a workpiece to be ground can be adjusted through the connecting assembly, the inner pressing disc is arranged in the outer pressing ring, and the outer wall of the inner pressing disc makes contact with the inner circle side wall of the outer pressing ring. The top of the inner pressure plate is connected with a pressure adjusting device through a connecting assembly so as to adjust the pressure between the inner pressure plate and the workpiece to be ground. According to the upper grinding disc, the outer pressing ring and the inner pressing disc are arranged in a separated and modularized mode, the pressure adjusting device is connected with the outer pressing ring and the inner pressing disc so as to adjust the pressure, acting on a product, of the outer pressing ring and the inner pressing disc, and the pressure, acting on the product, of the outer pressing ring and the inner pressing disc is adjusted so as to compensate for the removal amount difference caused by the linear speed difference; and the inner / outer ring consistency of the to-be-ground product is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of polishing devices, and more specifically, to an upper grinding disc with zone-by-zone pressure regulation and a pressure regulation method thereof. Background Art

[0002] In the grinding (polishing) process, the loading pressure and linear speed of the workpiece disc directly affect the processing efficiency and the surface quality of the workpiece. However, the existing processing workpiece disc usually has a high linear speed in the outer ring area of ​​the workpiece disc, high grinding efficiency, and a low linear speed in the inner ring area, low grinding efficiency. This makes the inner / outer ring product removal amount of the workpiece disc different and the consistency poor during the existing grinding and polishing process, which often leads to inconsistent grinding degrees of the inner and outer ring surfaces of the workpiece being ground and polished, and the inner and outer ring linear speeds of the workpiece disc are often difficult to adjust.

[0003] Therefore, in order to solve the above problems, there is an urgent need for a workpiece disc that can adjust the product grinding removal rate of the inner and outer rings. Summary of the invention

[0004] The purpose of the present invention is to provide an upper grinding disc with zone-by-zone pressure regulation. The upper grinding disc with zone-by-zone pressure regulation provided by the present invention connects and controls the inner and outer rings of the upper grinding disc in different zones, and compensates for the difference in product surface removal caused by the difference in linear speed between the inner and outer rings of the upper grinding disc by adjusting the pressure between the inner and outer rings of the upper grinding disc and the product.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] An upper grinding disc with zone-by-zone pressure adjustment, the upper grinding disc is used for polishing the upper surface of a workpiece, and the upper grinding disc with zone-by-zone pressure adjustment comprises: an outer pressure ring, an inner pressure plate, a connecting assembly and a pressure adjustment device;

[0007] The outer pressure ring is connected to the connecting assembly, and the connecting assembly is connected to the pressure regulating device to adjust the pressure between the outer pressure ring and the workpiece to be ground through the connecting assembly. The inner pressure plate is arranged in the outer pressure ring and the outer wall of the inner pressure plate is in contact with the inner circular side wall of the outer pressure ring. The top of the inner pressure plate is connected to the pressure regulating device through the connecting assembly to adjust the pressure between the inner pressure plate and the workpiece to be ground.

[0008] Preferably, the pressure regulating device comprises a cylinder and an air bag;

[0009] The cylinder is arranged on the connecting component, and the output end of the cylinder is connected to the connecting component to adjust the pressure of the outer pressure ring and the inner pressure plate through the connecting component. The airbag is arranged in the connecting component and the airbag can adjust the pressure of the outer pressure ring and the inner pressure plate. The force generated by the airbag and the cylinder acts in opposite directions.

[0010] Preferably, the connection assembly includes a connection flange and a limit plate;

[0011] The top of the connecting flange is connected to the cylinder, the bottom of the connecting flange is connected to the outer pressure ring, a clamping groove is provided at the bottom of the connecting flange, the limit plate is clamped on the clamping groove, a cavity is formed between the limit plate and the connecting flange, the airbag is arranged in the cavity, and the inner pressure plate is connected to the limit plate.

[0012] Preferably, the pressure regulating device further comprises an air pump and an electrical proportional valve, the airbag is connected to the air pump, and the cylinder and the airbag are provided with the electrical proportional valve in a one-to-one correspondence to adjust the pressure of the cylinder and the airbag.

[0013] Preferably, a limiting ring is provided on the outer ring side wall of the outer pressure ring, and the inner diameter of the limiting ring is equal to the outer ring diameter of the outer pressure ring to limit the movement of the workpiece to be ground.

[0014] The present invention also provides a method for regulating the pressure of an upper grinding disc in different regions, which is used to regulate the pressure of an outer pressure ring and an inner pressure plate in the upper grinding disc. The method for regulating the pressure of an upper grinding disc in different regions is implemented based on the upper grinding disc with different pressure regulation. The method for regulating the pressure of an upper grinding disc in different regions comprises:

[0015] When the linear speed of the outer pressure ring is greater than the linear speed of the inner pressure plate, the air pressure in the airbag is loaded through the electrical proportional valve arranged on the airbag. As the air pressure in the airbag increases, the pressure of the cylinder on the connecting flange gradually decreases, the pressure of the outer pressure ring decreases, and the pressure of the inner pressure plate increases.

[0016] The beneficial effects of the present invention are:

[0017] 1. The upper grinding disc is designed with an independent outer pressure ring / inner pressure plate structure, and the cylinder is used to apply overall loading pressure to the upper grinding disc, so that the pressure between the upper grinding disc and the product can be adjusted according to actual production needs.

[0018] 2. The airbag is used to adjust the pressure difference between the outer pressure ring and the inner pressure plate to compensate for the difference in removal caused by the difference in linear speed and ensure the consistency of the inner / outer ring products after grinding and polishing by the upper grinding disc.

[0019] The present invention provides an upper grinding disc with zone-based pressure regulation, which is modularly arranged by separating an outer pressure ring and an inner pressure plate, and connected to the outer pressure ring and the inner pressure plate through a pressure regulating device to adjust the pressure between the outer pressure ring and the inner pressure plate and the product. In addition, the setting of the pressure regulating device enables the upper grinding disc to compensate for the difference in the amount of product surface removal caused by the difference in linear speed of the inner and outer circles of the upper grinding disc during the grinding and polishing process by adjusting the force of the outer pressure ring and the inner pressure plate relative to the product surface, thereby ensuring the flatness of the product surface and the consistency of the amount of removal of the inner and outer circles of the upper grinding disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the upper grinding disc with zone-by-zone pressure regulation according to the present invention.

[0021] Description of reference numerals:

[0022] 1.1. External pressure ring; 1.2. Internal pressure plate; 1.3. Limit plate; 1.4. Air bag; 1.5. Connecting flange; 1.6. Limit ring. DETAILED DESCRIPTION

[0023] Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without violating the connotation of the present invention, so the present invention is not limited to the specific implementation disclosed below.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] like Figure 1As shown, an upper grinding disc with zone pressure regulation comprises: an outer pressure ring 1.1, an inner pressure plate 1.2, a connecting assembly and a pressure regulating device; the outer pressure ring 1.1 is connected to the connecting assembly, the connecting assembly is connected to the pressure regulating device to adjust the pressure between the outer pressure ring 1.1 and the workpiece to be ground through the connecting assembly, the inner pressure plate 1.2 is arranged in the outer pressure ring 1.1 and the outer wall of the inner pressure plate 1.2 is in contact with the inner circular side wall of the outer pressure ring 1.1, and the top of the inner pressure plate 1.2 is connected to the pressure regulating device through the connecting assembly to adjust the pressure between the inner pressure plate 1.2 and the workpiece to be ground.

[0027] In this embodiment, the upper grinding disc separates the outer pressure ring 1.1 and the inner pressure plate 1.2 into modular arrangements, and is connected to the outer pressure ring 1.1 and the inner pressure plate 1.2 via a pressure regulating device to adjust the pressure between the outer pressure ring 1.1 and the inner pressure plate 1.2 and the product. Due to the difference in diameter between the outer pressure ring 1.1 and the inner pressure plate 1.2, a conventional grinding and polishing grinding disc usually has a certain difference in the amount of removal between the inner and outer circles of the product during use. The setting of the pressure regulating device in the present application enables the upper grinding disc to compensate for the difference in the amount of removal on the product surface caused by the difference in linear speed of the inner and outer circles of the upper grinding disc during the grinding and polishing process by adjusting the pressure of the outer pressure ring 1.1 and the inner pressure plate 1.2 relative to the product surface, thereby ensuring the flatness of the product surface and the consistency of the amount of removal on the inner and outer circles of the upper grinding disc.

[0028] See also Figure 1 The pressure regulating device includes a cylinder and an airbag 1.4; the cylinder is arranged on the connecting component, and the output end of the cylinder is connected to the connecting component to adjust the pressure of the outer pressure ring 1.1 and the inner pressure plate 1.2 through the connecting component. The airbag 1.4 is arranged in the connecting component and the airbag 1.4 can adjust the pressure of the outer pressure ring 1.1 and the inner pressure plate 1.2. The force generated by the airbag 1.4 and the cylinder acts in opposite directions.

[0029] The connecting assembly includes a connecting flange 1.5 and a limit plate 1.3; the top of the connecting flange 1.5 is connected to the cylinder, the bottom of the connecting flange 1.5 is connected to the outer pressure ring 1.1, a snap-in groove is provided at the bottom of the connecting flange 1.5, the limit plate 1.3 is snap-fitted to the snap-in groove, a cavity is formed between the limit plate 1.3 and the connecting flange 1.5, the airbag 1.4 is provided in the cavity, and the inner pressure plate 1.2 is connected to the limit plate 1.3.

[0030] In this embodiment, the upper grinding disc applies pressure to the outer pressure ring 1.1 and the inner pressure plate 1.2 simultaneously through the cylinder, so that the upper grinding disc can accurately control and adjust the grinding removal amount of the product according to the actual production and use requirements. The airbag 1.4 is arranged between the connecting flange 1.5 and the limit plate 1.3, and the top of the airbag 1.4 abuts against the connecting flange 1.5, and the bottom of the airbag 1.4 abuts against the limit plate 1.3. By adjusting the air pressure in the airbag 1.4, the airbag 1.4 generates opposite forces on the connecting flange 1.5 and the limit plate 1.3, so that the outer pressure ring 1.1 connected to the bottom of the connecting flange 1.5 and the inner pressure plate 1.2 connected to the limit plate 1.3 are subjected to opposite forces from the airbag 1.4, so as to adjust the forces acting on the product by the outer pressure ring 1.1 and the inner pressure plate 1.2. When the air pressure in the airbag 1.4 increases, the force exerted by the inner pressure plate 1.2 on the product increases, and the force exerted by the outer pressure ring 1.1 on the product decreases, thereby compensating for the difference in removal amount caused by the difference in linear speed between the outer pressure ring 1.1 and the inner pressure plate 1.2.

[0031] In addition, the setting of the limit plate 1.3 can effectively prevent the inner pressure plate 1.2 from moving upward under the action of external force when working. The inner pressure plate 1.2 is fixedly clamped between the outer pressure ring 1.1 through the limit plate 1.3, so that the bottom surface of the inner pressure plate 1.2 and the bottom surface of the outer pressure ring 1.1 are always on the same horizontal plane, further ensuring the flatness of the product surface during the grinding and polishing process.

[0032] In one embodiment, the pressure regulating device further includes an air pump and an electrical proportional valve, the airbag 1.4 is connected to the air pump, and the cylinder and the airbag 1.4 are provided with electrical proportional valves corresponding to each other to adjust the pressure of the cylinder and the airbag 1.4. In this embodiment, the pressure of the cylinder and the airbag 1.4 is adjusted by the electrical proportional valve, so that the pressure of the outer pressure ring 1.1 and the inner pressure plate 1.2 on the surface of the product can be accurately controlled and adjusted. Furthermore, in order to make the pressure adjustment of the inner pressure plate 1.2 more accurate, an air pressure sensor can be provided in the airbag 1.4 to more accurately control the electrical proportional valve according to the air pressure sensor, thereby adjusting the input air pressure.

[0033] In a preferred embodiment, a limiting ring 1.6 is provided on the outer ring side wall of the outer pressure ring 1.1, and the inner diameter of the limiting ring 1.6 is equal to the outer ring diameter of the outer pressure ring 1.1 to limit the movement of the workpiece to be ground.

[0034] The present invention further provides a method for regulating the pressure of an upper grinding disc in different regions, which is used to regulate the pressure of an outer pressure ring 1.1 and an inner pressure plate 1.2 in the upper grinding disc. The method for regulating the pressure of an upper grinding disc in different regions is implemented based on the upper grinding disc with different region pressure regulation. The method for regulating the pressure of an upper grinding disc in different regions comprises:

[0035] When the linear speed of the outer pressure ring 1.1 is greater than the linear speed of the inner pressure plate 1.2, the air pressure in the airbag 1.4 is loaded through the electrical proportional valve arranged in the airbag 1.4. As the air pressure in the airbag 1.4 increases, the pressure of the cylinder on the connecting flange 1.5 gradually decreases, the pressure of the outer pressure ring 1.1 decreases, and the pressure of the inner pressure plate 1.2 increases.

[0036] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An upper grinding disc with zone-regulated pressure, the upper grinding disc is used for polishing the upper surface of a workpiece, characterized in that: The upper grinding plate with zone-by-zone pressure regulation comprises: an outer pressure ring, an inner pressure plate, a connecting assembly and a pressure regulating device; The outer pressure ring is connected to the connecting assembly, and the connecting assembly is connected to the pressure regulating device to adjust the pressure between the outer pressure ring and the workpiece to be ground through the connecting assembly. The inner pressure plate is arranged in the outer pressure ring and the outer wall of the inner pressure plate is in contact with the inner circular side wall of the outer pressure ring. The top of the inner pressure plate is connected to the pressure regulating device through the connecting assembly to adjust the pressure between the inner pressure plate and the workpiece to be ground.

2. The upper grinding disc with zone pressure regulation according to claim 1 is characterized in that: The pressure regulating device comprises a cylinder and an air bag; The cylinder is arranged on the connecting component, and the output end of the cylinder is connected to the connecting component to adjust the pressure of the outer pressure ring and the inner pressure plate through the connecting component. The airbag is arranged in the connecting component and the airbag can adjust the pressure of the outer pressure ring and the inner pressure plate. The force generated by the airbag and the cylinder acts in opposite directions.

3. The upper grinding disc with zone pressure regulation according to claim 2 is characterized in that: The connecting assembly includes a connecting flange and a limiting plate; The top of the connecting flange is connected to the cylinder, the bottom of the connecting flange is connected to the outer pressure ring, a clamping groove is provided at the bottom of the connecting flange, the limit plate is clamped on the clamping groove, a cavity is formed between the limit plate and the connecting flange, the airbag is arranged in the cavity, and the inner pressure plate is connected to the limit plate.

4. The upper grinding disc with zone pressure regulation according to claim 2 is characterized in that: The pressure regulating device also includes an air pump and an electric proportional valve. The airbag is connected to the air pump. The cylinder and the airbag are provided with the electric proportional valve in a one-to-one correspondence to adjust the pressure of the cylinder and the airbag.

5. The upper grinding disc with zone pressure regulation according to any one of claims 1 to 4, characterized in that: A limiting ring is arranged on the outer ring side wall of the outer pressure ring, and the inner diameter of the limiting ring is equal to the outer ring diameter of the outer pressure ring to limit the movement of the workpiece to be ground.

6. A method for regulating the pressure of an upper grinding disc in different regions, the method for regulating the pressure of an outer pressure ring and an inner pressure plate in the upper grinding disc, characterized in that: The method for regulating the pressure of the upper grinding disc in different regions is implemented based on the upper grinding disc with pressure regulation in different regions according to any one of claims 1 to 5, and the method for regulating the pressure of the upper grinding disc in different regions comprises: When the linear speed of the outer pressure ring is greater than the linear speed of the inner pressure plate, the air pressure in the airbag is loaded through the electrical proportional valve arranged on the airbag. As the air pressure in the airbag increases, the pressure of the cylinder on the connecting flange gradually decreases, the pressure of the outer pressure ring decreases, and the pressure of the inner pressure plate increases.

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