JPH04109860U - diamond whetstone - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a diamond whetstone having a structure that prevents clogging of the whetstone without causing problems such as increase in noise and vibration. [Structure] When providing the abrasive grain surface 12 on the entire outer peripheral surface of the wheel 11 by electrodeposition, masking in the form of inclined grooves with insulating paint is provided on the base metal of the outer peripheral surface of the wheel 11 before electrodeposition, and then the diamond abrasive is applied. A desired pattern of non-abrasive portions 13 is formed on the abrasive grain surface 12 by electrodepositing the grains. [Effect] It promotes the discharge of abrasive powder generated during machining in the non-abrasive part of the abrasive grain size depth, prevents clogging, and has low noise.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is used for grinding ceramic materials by fixing abrasive grains on the outer circumferential surface using an electrodeposition method. Regarding the improvement of diamond whetstones such as full-sized rotating wheel type whetstones, we are developing abrasive grains. Abrasive-free areas where abrasive grains are not deposited are arranged in the required pattern on the rotating surface to which abrasive grains are deposited. , relating to a diamond grinding wheel that has low noise, less clogging, and a longer lifespan.

0002

[Conventional technology]

Conventional methods are used to grind ceramic materials such as ferrite materials into the desired shape. A diamond whetstone is used. Diamond whetstones come in various shapes depending on the shape of the base metal on which the diamond abrasive grains are attached. For example, a segment type in which abrasive grains are coated on the circumferential surface of a donut-shaped disk, There are full-sized grindstones that have abrasive grains coated on the outer circumferential surface of the wheel.

0003 For example, when manufacturing a ferrite material with an arch-shaped cross section by dividing a cylindrical body into multiple pieces, , a full-type grindstone with a convex outer peripheral surface for processing the inner curved surface and for processing the outer curved surface A full-type grindstone with a concave outer peripheral surface is used.

0004 As these diamond whetstones are used for long periods of time, the abrasive powder becomes hard to the diamond whetstone. Clogging occurs between grains, heat is generated between the grinding wheel and the workpiece, and the workpiece material is heated. There is a problem of peeling phenomena such as cracks in the inner parts.

[0005]

[Problem that the idea aims to solve]

Therefore, in order to prevent clogging, abrasive grains are electrodeposited on the circumferential surface of the disc-shaped segment type. When bonding small base metal plates of the desired shape, create a gap between adjacent base metal plates to prevent radiation. It has been proposed that a groove is provided in the shape of a groove. However, although clogging is prevented, processing There were problems with loud noise and vibration.

[0006] On the other hand, the above-mentioned full-type grindstone with a convex or concave outer peripheral surface is difficult to prevent clogging. For example, as with the segment type, there are no proposals for It is possible to cut grooves on the surface, but the wheel rotation speed of a full-sized grindstone is generally 200. It has a high rotation speed of 0 to 5000 rpm, and cutting a groove on the outer circumferential surface with a high circumferential speed results in grinding. It is difficult to put it into practical use because of the excessive noise during construction.

[0007] This idea eliminates clogging of the grinding wheel without causing problems such as increased noise and vibration. The purpose of the present invention is to provide a diamond whetstone having a structure that prevents this.

[0008]

[Means to solve the problem]

This idea is based on a diamond whetstone in which abrasive grains are fixed to the rotating surface by electrodeposition. It is characterized by the fact that abrasive-free areas to which abrasive grains are not deposited are arranged in a desired pattern on the rotating surface. It is a diamond whetstone.

[0009] To explain this idea specifically, in the case of a full-sized grindstone, abrasive grains are placed on the outer circumferential surface of the wheel. For full-form grindstones fixed by electrodeposition, the required pattern created on the wheel during electrodeposition. The abrasive-free area where abrasive grains are not adhered by masking is applied to the outer circumferential surface of the wheel with the required pattern. It is characterized by being arranged in a

0010 In addition, in the case of the segment type, this idea also allows electrodeposition of abrasive grains on the circumferential surface of the rotating disk. For segment-type grinding wheels that are fixed using a method, the required pattern created on the wheel during electrodeposition is The abrasive-free area where abrasive grains are not adhered by masking is applied to the circumferential surface of the wheel as required. It is characterized by being arranged in turns.

[0011]

[Effect]

This idea consists of arranging non-abrasive areas on the rotating surface in a desired pattern. This is a diamond whetstone that is characterized by For example, the abrasive-free part where no abrasive grains are deposited on the rotating surface to which abrasive grains are deposited is the required width and length. This abrasive-free part is a groove with the diameter and depth of the abrasive grains provided on the abrasive grain surface. It is equivalent to , and prevents clogging by promoting the discharge of abrasive powder generated during processing. be.

0012 The method of arranging non-abrasive portions in the desired pattern on the abrasive grain surface of a diamond grinding wheel is the total type. To explain using the example of a grinding wheel, an abrasive grain surface is provided on the entire outer circumferential surface of the wheel using an electrodeposition method. Before installation, apply groove-shaped masking in the required pattern to the base metal of the wheel using insulating paint. Then, the wheel is soaked in the plating solution to serve as a cathode, and diamond abrasive grains are placed on the outer circumferential surface. When electroplating is performed, the plating metal is insulated with the diamond abrasive grains, which is an insulator. The plated metal is deposited on the base metal, avoiding the adhesive paint, and coated to a thickness of about 1/2 of the abrasive grain size. Deposit and complete electrodeposition, then wash with water, and then remove the insulating paint with a solvent etc. As shown in FIG. In step 3, it becomes fixed, and the part where the insulating paint is applied is abrasive-free where the abrasive grains are not attached. 4, which corresponds to a groove having the depth of the abrasive grain diameter provided on the abrasive grain surface.

[0013] In this invention, the arrangement pattern of the abrasive-free part is determined by the shape and dimensions of the grinding wheel base metal, and the abrasive grains. Depending on the particle size, rotation speed of the grinding wheel, etc., it is possible to prevent noise and promote the discharge of abrasive powder. For example, if we take the example of a full-type grindstone as an example, Non-abrasive parts are arranged at the required pitch on the outer circumferential surface of the wheel in the form of inclined grooves, or V-shaped It is possible to select and combine various patterns such as The pitch of the abrasive-free part is not constant, but a pattern is repeated in which the pitch is changed sequentially by several pitches. By superimposing the frequency of the noise generated during rotation, a peak at a specific frequency does not occur. In this way, noise can be reduced.

[0014] A ferrite material with a bow-shaped cross section is used in the production of a total material with a convex or concave outer peripheral surface. When using diamond abrasive grains with a particle size of 100 to 200 μm in a molded whetstone, The width of the abrasive-free portion is preferably about 2 mm, and the pitch is preferably about 30 to 50 mm.

[0015]

【Example】

The diamond grindstone shown in Figure 1 processes the outer curved surface of a ferrite material with a bow-shaped cross section. It is a full-sized grindstone 10 having a concave outer circumferential surface for grinding, and the wheel has an outer diameter of 190 mm. When providing an abrasive grain surface on the entire outer circumferential surface of the wheel 11 by electrodeposition, the outer circumferential surface of the wheel 11 is A sloped groove-shaped masking is provided on the base metal using insulating paint, and then electrodeposition is applied to the abrasive grain surface 12. Abrasive-free portions 13 with a width of 2 mm are formed at a pitch of 30 mm. to diamond abrasive grains A particle size of 100 μm was used.

[0016] The diamond grindstone shown in Figure 2 processes the inner curved surface of a ferrite material with a bow-shaped cross section. It is a full-type grindstone 20 having a convex outer circumferential surface for grinding, and similarly the outer circumferential surface of the wheel 21 On the abrasive grain surface 22, inclined groove-shaped non-abrasive portions 23 are provided at a pitch of 30 mm.

[0017] Using the full type grindstones 10 and 20 shown in FIGS. 1 and 2, the grindstone rotation speed is 3000 rpm, Under the conditions of machining time of 50 seconds/m, the R accuracy of the ferrite material with a bow-shaped cross section is ±0.05 ~ Finished with ±0.1 and surface roughness of 15S.

[0018] In addition, for comparison, we compared a conventional full-type grindstone with the same outer diameter and a wheel with a width of 2 m on the base metal on the outer circumferential surface of the wheel. Similarly, ferrite material was processed using a full-form grindstone with a groove of 1 mm in depth. In the case of the full-type grindstone developed by this invention, we found that the ferrite material had a peeling phenomenon. It does not occur at all and has a lifespan of more than 1.5 times that of conventional products. The noise level was 5 dB or more.

[0019]

[Effect of the idea]

The diamond grinding wheel of this invention has a rotating surface covered with abrasive grains. Since abrasive-free areas are provided in the required pattern to which abrasive particles are not deposited, no particles are generated during processing. It promotes the discharge of generated abrasive powder, prevents clogging, and extends the life of the grinding wheel. In addition, the abrasive-free part is only as deep as one layer of the diamond grinding wheel, making it a low-noise work environment. will not worsen.

[Brief explanation of drawings]

FIG. 1 is a perspective explanatory view of a full-form grindstone having a concave outer circumferential surface according to the present invention.

FIG. 2 is a perspective explanatory view of a full-form grindstone having a convex outer circumferential surface according to this invention.

FIG. 3 is an explanatory diagram showing the abrasive grain surface of the diamond grindstone according to this invention.

[Explanation of symbols]

1 base money 2 Diamond abrasive grain 3 Plated metal 4 Abrasive-free part 10,20 Full type whetstone 1121 Wheel 12, 22 Abrasive grain surface 13, 23 Abrasive-free part

Claims (1)

[Scope of utility model registration request] 1. A diamond whetstone having abrasive grains fixed to its rotating surface by electrodeposition, characterized in that an abrasive-free portion to which no abrasive grains are attached is arranged on the rotating surface in a desired pattern.