I-shaped grinding wheel and manufacturing method thereof

Abstract

The invention discloses an I-shaped grinding wheel and a manufacturing method thereof. The manufacturing method comprises the following steps that (1) an outer circle grinding layer is pasted on the outer surface of a first disc, and a first annular grinding layer is pasted on the inner surface of the first disc; (2) a second annular polishing layer is adhered to the inner surface of a second disc, and a magic tape felt surface is adhered to the outer surface of the second disc; (3) preparing a supporting column; (4) one end of the supporting column is bonded to the first disc, and the other end of the supporting column is bonded to the second disc; the manufacturing method provided by the invention is simple, easy to implement and high in production efficiency, and the I-shaped grinding wheel can be quickly produced. The manufactured I-shaped grinding wheel is integrally in an I shape, three-face grinding can be efficiently completed on one device only through one consumable, the consumable does not need to be replaced or a workpiece does not need to be turned over, the operation process is greatly simplified, the grinding consistency and automation level are improved, the production efficiency is improved, and the automatic production requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing wheels, in particular to a I-shaped polishing wheel and a manufacturing method thereof. BACKGROUND

[0002] When polishing a workpiece, sandpaper is usually used, which is attached to the base of the grinding disc by magic tape. For example, a new type of polishing disc is disclosed in the utility model patent with the publication number "CN212706168U" and the name "a new type of polishing disc", which includes a grinding disc base, a magic tape and a sponge sandpaper. The back of the grinding disc base is provided with a screw rod for connecting to the grinding equipment. The magic tape is fixedly connected to the bottom of the grinding disc base. The sponge sandpaper is attached to the magic tape.

[0003] When polishing, for example, the middle frame workpiece of a mobile phone, which generally includes three surfaces to be polished: A surface (upper small plane), B surface (outer plane) and C surface (lower small plane). During the polishing process, large-size sandpaper (such as 3 inches, diameter 75 mm) is usually used to polish the B surface, and then small-size sandpaper (1 inch or 2 inches) is used to polish the A surface and the C surface respectively. When polishing the C surface, the middle frame needs to be disassembled and turned over before being clamped again. This method not only requires frequent replacement of sandpaper and turning over of the workpiece, resulting in prolonged polishing time, but also highly depends on manual operation, which is low in efficiency and cannot meet the needs of automatic production. SUMMARY

[0004] In view of the above problems, the present application aims to provide a I-shaped polishing wheel with multiple surfaces that can be polished and a manufacturing method thereof.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present application is as follows:

[0006] A manufacturing method of a I-shaped polishing wheel, comprising the following steps:

[0007] (1) preparing a first disc, an outer circular polishing layer is attached to the outer surface of the first disc, and a first annular polishing layer is attached to the inner surface of the first disc;

[0008] (2) preparing a second disc, the outer diameter of the second disc is equal to that of the first disc, a second annular polishing layer is attached to the inner surface of the second disc, the inner hole diameter of the second annular polishing layer is consistent with that of the first annular polishing layer, and a magic tape felt surface is attached to the outer surface of the second disc;

[0009] (3) preparing a support column, the outer diameter of the support column is equal to or slightly smaller than the inner hole diameter of the first annular polishing layer or the second annular polishing layer, and the height of the support column is greater than the thickness of the workpiece to be polished;

[0010] (4) Attach one end of the support column to the center of the inner surface of the first disk, and attach the other end of the support column to the center of the inner surface of the second disk.

[0011] Steps (1), (2), and (3) are not in any particular order.

[0012] As a preferred embodiment of the present invention, step (1) includes the following steps:

[0013] Prepare EVA, sponge or polyurethane foam with a thickness of 3-7mm and a hardness of 40-90HC, and cut it to obtain a first disc with a circular shape.

[0014] A pyramid-shaped sandpaper with a thickness of 0.1-0.7mm is prepared and cut to obtain a first circular sandpaper and a first ring-shaped sandpaper. The first circular sandpaper is adhered to the outer surface of the first disc using a water-based adhesive to form an outer circular sanding layer. The first ring-shaped sandpaper is adhered to the inner surface of the first disc using the same water-based adhesive to form a first ring-shaped sanding layer. The first disc, with a hardness of 40-90HC, provides stable support and can accommodate minor surface irregularities, improving sanding uniformity. The water-based adhesive is environmentally friendly and has high bonding strength, avoiding the volatile pollution and peeling problems associated with traditional adhesives. The material cutting process is simple, suitable for mass production, and reduces manufacturing costs.

[0015] As a preferred embodiment of the present invention, step (2) includes the following steps:

[0016] Prepare EVA, sponge or polyurethane foam with a thickness of 3-7mm and a hardness of 40-90HC, and cut it to obtain a second disc with a circular shape.

[0017] Prepare a pyramid sandpaper with a thickness of 0.1-0.7mm, cut it to obtain a second ring sandpaper in the shape of a ring, and use a water-based adhesive to stick the first ring sandpaper to the inner surface of the second disc to form a second ring sanding layer.

[0018] Prepare long-pile fabric and cut it to obtain a pile layer with a circular shape. Use a water-based adhesive to stick the pile layer to the outer surface of the second disc to form a hook and loop felt surface. It has good adhesion properties and is easy to match with parts with hook and loop hook surfaces, which facilitates the installation and removal of the grinding wheel.

[0019] As a preferred embodiment of the present invention, step (3) includes the following steps:

[0020] EVA material with a thickness of 7-10mm and a hardness of 70-100HC is prepared and cut to obtain circular support columns. The use of EVA material for the support columns, with a hardness of 70-100HC, provides a certain degree of elasticity and strength, ensuring structural stability while adapting to vibrations during the grinding process. The specific thickness allows for grinding of workpieces of varying thicknesses, demonstrating good versatility.

[0021] In a preferred embodiment of the present invention, the number of support columns is one or two stacked and bonded together. When the workpiece is thick, two stacked and bonded support columns can be used to increase the support height, ensuring a proper positional relationship between the grinding wheel and the workpiece and grinding stability.

[0022] As a preferred embodiment of the present invention, the outer diameter of the support column is two-thirds to three-quarters of the outer diameter of the first disk, which improves the stability and reliability of the grinding wheel and is beneficial to improving grinding accuracy and efficiency.

[0023] An I-shaped grinding wheel is manufactured using the aforementioned I-shaped grinding wheel manufacturing method. The wheel is I-shaped in shape and rotates under the drive of a grinding device. The outer circular grinding layer and the second annular grinding layer are used to grind the B, A, and C surfaces of the workpiece, respectively. The Velcro felt surface facilitates the connection and disassembly of the grinding wheel with the device or other components.

[0024] The beneficial effects of this invention are as follows: The manufacturing method provided by this invention is simple, easy to implement, and has high production efficiency, enabling the rapid production of I-shaped grinding wheels. During grinding, the presence of the support column creates a suitable spatial relationship between the grinding wheel and the workpiece, allowing for grinding operations on different surfaces of the workpiece using the outer circular grinding layer, the first annular grinding layer, and the second annular grinding layer. This achieves efficient three-sided grinding on a single machine using only one consumable, without the need to change consumables or flip the workpiece, greatly simplifying the operation process, improving grinding consistency and automation, increasing production efficiency, and meeting the needs of automated production. Furthermore, the Velcro felt surface of the grinding wheel has excellent adhesion properties, facilitating its compatibility with components with Velcro hooks, and simplifying the installation and disassembly of the grinding wheel. Attached Figure Description

[0025] Figure 1 This is a flowchart of the manufacturing method of the present invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0028] Figure 4 This is an exploded structural diagram of the present invention. Detailed Implementation

[0029] Example: See Figures 1-4 This invention provides an I-shaped grinding wheel and its manufacturing method. The manufacturing method of the I-shaped grinding wheel includes the following steps:

[0030] (1) Prepare the first disc 1. Specifically, prepare EVA, sponge or polyurethane foam with a thickness of 3-7mm and a hardness of 40-90HC, and cut it to obtain the first disc 1 with a circular shape. The material cutting process is simple, suitable for mass production, and reduces manufacturing costs. The first disc 1 is preferably made of EVA with a hardness of 40-90HC, which has medium hardness and provides a certain degree of elasticity and cushioning, so that the outer circle grinding layer and the first ring grinding layer can better fit the workpiece during grinding and adapt to minor unevenness.

[0031] An outer circular polishing layer 2 is adhered to the outer surface of the first disc 1, and a first annular polishing layer 3 is adhered to the inner surface of the first disc 1. Specifically, pyramid sandpaper with a thickness of 0.1-0.7 mm is prepared and cut to obtain a first circular sandpaper and a first annular sandpaper. The first circular sandpaper is adhered to the outer surface of the first disc 1 to form the outer circular polishing layer 2 using a water-based adhesive, and the first annular sandpaper is adhered to the inner surface of the first disc 1 to form the first annular polishing layer 3 using a water-based adhesive. The water-based adhesive is environmentally friendly and has high bonding strength, avoiding the volatilization pollution and polishing layer peeling problems of traditional glues.

[0032] (2) Prepare a second disk 4. The outer diameter of the second disk 4 is equal to that of the first disk 1. Specifically, prepare EVA, sponge or polyurethane foam with a thickness of 3-7mm and a hardness of 40-90HC. Cut it to obtain a second disk 4 with a circular shape.

[0033] A second annular polishing layer 5 is attached to the inner surface of the second disc 4. The inner annular hole of the second annular polishing layer 5 is consistent with the diameter of the inner annular hole of the first annular polishing layer 3. Specifically, a pyramid sandpaper with a thickness of 0.1-0.7mm is prepared, cut to obtain a second annular sandpaper in an annular shape, and the first annular sandpaper is attached to the inner surface of the second disc 4 with a water-based adhesive to form the second annular polishing layer 5.

[0034] A Velcro felt surface 6 is attached to the outer surface of the second disc 4. Specifically, a long pile cloth is prepared and cut to obtain a pile cloth layer with a circular shape. The pile cloth layer is attached to the outer surface of the second disc 4 with a water-based adhesive to form a Velcro felt surface 6, which has good adhesion properties and is easy to cooperate with parts with Velcro hooks, facilitating the installation and removal of the grinding wheel.

[0035] (3) Prepare a support column 7. The outer diameter of the support column 7 is equal to or slightly smaller than the diameter of the inner ring hole of the first annular grinding layer 3 or the second annular grinding layer 5. The height of the support column 7 is greater than the thickness of the workpiece to be ground. Specifically, prepare EVA with a thickness of 7-10mm and a hardness of 70-100HC, and cut it to obtain a circular support column 7. The support column 7 is made of EVA material with a hardness of 70-100HC, which has certain elasticity and strength. It can adapt to vibration and other conditions during the grinding process while ensuring structural stability. The specific thickness setting can meet the grinding needs of workpieces with different thicknesses and has good versatility.

[0036] (4) One end of the support column 7 is bonded to the center of the inner surface of the first disk 1, and the other end of the support column 7 is bonded to the center of the inner surface of the second disk 4; the first disk 1 and the second disk 4 are connected by the support column 7, so that the two are kept at a certain distance. This distance is determined according to the thickness of the workpiece to be ground, so as to ensure that the grinding wheel can correctly grind different surfaces of the workpiece during the grinding process, and provide a suitable spatial structure for grinding. Preferably, the number of support columns 7 is one or two stacked and bonded together. That is, the support column 7 can be a single circular EVA column, or two circular EVA columns can be stacked and bonded together. The appropriate number and combination of support columns 7 can be selected according to factors such as the thickness of the workpiece, grinding requirements, and stress conditions during the grinding process. When the workpiece is thick, two overlapping and bonded support columns 7 can be used to increase the support height, thereby increasing the flexibility and adaptability of the support columns 7. They can be adjusted according to different situations in actual production to meet diverse grinding needs, improving the versatility and practicality of the grinding wheel, and ensuring a suitable positional relationship between the grinding wheel and the workpiece, as well as grinding stability. The outer diameter of the support column 7 is preferably two-thirds to three-quarters of the outer diameter of the first disc 1. This ensures that the support column 7 provides sufficient support area and stability for the first disc 1 and the second disc 4, making the entire grinding wheel structurally stable during the grinding process, which is beneficial for improving grinding accuracy and efficiency.

[0037] Steps (1), (2), and (3) are not in any particular order.

[0038] The manufacturing method provided by this invention is simple, easy to implement, and highly efficient, enabling the rapid production of I-shaped grinding wheels. The I-shaped grinding wheel produced using this method has an overall I-shape. The Velcro felt surface 6 on the I-shaped grinding wheel facilitates easy attachment to the Velcro hook surface of the grinding disc on a five-axis grinding machine, making installation and disassembly simple and convenient. Specifically, the grinding disc has a mounting shaft on its back and a Velcro hook surface on its front.

[0039] During polishing, because the I-shaped polishing wheel produced by this invention is I-shaped in overall form, the presence of the support column 7 creates a suitable spatial relationship between the polishing wheel and the workpiece, enabling the use of the outer circular polishing layer 2, the first annular polishing layer 3, and the second annular polishing layer 5 to polish different surfaces of the workpiece. Taking the polishing of a mobile phone frame as an example, the mobile phone frame generally includes three surfaces to be polished: surface A (upper small plane), surface B (outer plane), and surface C (lower small plane). During polishing, the mobile phone frame workpiece is inserted into the middle recess of the I-shaped polishing wheel. When the I-shaped polishing wheel descends, the first annular polishing layer 3 polishes surface A (upper surface) of the workpiece, and when the I-shaped polishing wheel rises, the second annular polishing layer 5 polishes surface C (lower surface) of the workpiece. The workpiece in the middle of the phone frame exits the concave position of the I-shaped grinding wheel. The I-shaped grinding wheel rotates 90 degrees, and the outer circular grinding layer 2 grinds the B side (side) of the workpiece. This allows for efficient three-sided grinding on a single machine using only one consumable, eliminating the need to change consumables or flip the workpiece. This greatly simplifies the operation process, improves grinding consistency and automation, increases production efficiency, and meets the needs of automated production. Furthermore, the Velcro felt surface 6 of the grinding wheel has excellent adhesion, facilitating its compatibility with components featuring Velcro hooks, and making the installation and removal of the grinding wheel convenient.

[0040] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention. Other grinding wheels and manufacturing methods that are the same as or similar to these are all within the protection scope of the present invention.

Claims

1. A method for manufacturing an I-shaped grinding wheel, characterized in that, It comprises the following steps: (1) preparing a first disc, an outer circle polishing layer is pasted on the outer surface of the first disc, and a first annular polishing layer is pasted on the inner surface of the first disc; (2) preparing a second disc, the outer diameter of the second disc is equal to that of the first disc, a second annular polishing layer is pasted on the inner surface of the second disc, the inner hole diameter of the second annular polishing layer is consistent with that of the first annular polishing layer, and a magic tape felt surface is pasted on the outer surface of the second disc; (3) preparing a support column, the outer diameter of the support column is equal to or slightly smaller than the inner hole diameter of the first annular polishing layer or the second annular polishing layer, and the height of the support column is greater than the thickness of the workpiece to be polished; (4) bonding one end of the support column to the center of the inner surface of the first disc, and bonding the other end of the support column to the center of the inner surface of the second disc; Steps (1), (2) and (3) are not in a specific order.

2. The method of claim 1 wherein, Step (1) comprises the following steps: Preparation of a first disc with a thickness of 3-7 mm and a hardness of 40-90 HC, cutting the first disc to obtain a circular shape; Preparation of a first circular sandpaper with a thickness of 0.1-0.7 mm, cutting the first circular sandpaper to obtain a circular shape, and pasting the first circular sandpaper on the outer surface of the first disc to form an outer circle polishing layer by using a water-based adhesive, and pasting a first annular sandpaper on the inner surface of the first disc to form a first annular polishing layer by using a water-based adhesive. Step (2) comprises the following steps:

3. The method of claim 1 wherein, Preparation of a second disc with a thickness of 3-7 mm and a hardness of 40-90 HC, cutting the second disc to obtain a circular shape; Preparation of a second annular sandpaper with a thickness of 0.1-0.7 mm, cutting the second annular sandpaper to obtain an annular shape, and pasting the first annular sandpaper on the inner surface of the second disc to form a second annular polishing layer by using a water-based adhesive; Preparation of long pile cloth, cutting the long pile cloth to obtain a circular shape, and pasting the long pile cloth on the outer surface of the second disc to form a magic tape felt surface by using a water-based adhesive. Step (3) comprises the following steps:

4. The method of claim 1 wherein, Preparation of an EVA with a thickness of 7-10 mm and a hardness of 70-100 HC, cutting the EVA to obtain a circular shape. The number of the support column is one or two.

5. The method of claim 1 wherein, The outer diameter of the support column is two-thirds to four-thirds of the outer diameter of the first disc.

6. The method of claim 1-5, wherein, It is made by the manufacturing method of the I-shaped polishing wheel according to any one of claims 1-6.

7. An I-beam sander wheel characterized by, ​

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