JPH01271176A - Grinding wheel and its manufacture - Google Patents

Abstract

PURPOSE:To improve a grinding wheel in its grinding ability and durability by forming a grinding surface with a protruded abrasive grain-electrodeposited part and a recessed abrasive grain-nonelectrodeposited part. CONSTITUTION:A grinding wheel main unit 1 forms its grinding surface into an irregular shape with an abrasive grain-electrodeposited part 3 and an abrasive grain-nonelectrodeposited part 6. The grinding wheel efficiently grinds a workpiece by an edge part of this abrasive grain-electrodeposited part 3 while smoothly removes cutting chips by this recessed non-electrodeposited part 6, enabling grinding ability to be enhanced. Further this non-electrodeposited part 6 forms in its bottom surface a small thickness plating layer 7, and it connects the protrusive abrasive grain-electrodeposited parts in both sides. As the result, the abrasive grain-electrodeposited part 3 is prevented from easily generating exfoliation from its corner part, and the grinding wheel enables its durability to be improved with no possibility of exfoliation and/or falling of abrasive grain in the grinding wheel even when it is used for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a grinding wheel with excellent grinding properties and a method for manufacturing the same.

(Prior art) Grinding wheels with superabrasive grains such as cubic boron nitride low grains or diamond abrasive grains electrodeposited on the grinding surface have been known for a long time, but recently, in order to improve the grinding ability, A grinding wheel has been developed in which a convex portion and a concave portion are formed by an abrasive electrodeposited portion and an abrasive non-electrodeposited portion.

To manufacture such a grinding wheel, a masking material is bonded to the main body of the grinding wheel and abrasive grains are electrodeposited, but as shown in Figure 3, this masked part is exposed to the plating solution. The grinding wheel body (1
) becomes exposed, and when used for a long time, the superabrasive grains (4
) had the disadvantage that it was easy to peel off.

(Problems to be Solved by the Invention) The present invention solves these conventional problems and provides excellent grinding ability by forming an abrasive grain electrodeposition part and an abrasive grain non-electrodeposition part on the grinding surface. It was completed with the aim of creating a grinding wheel with excellent durability and a manufacturing method for the same, which is highly durable and does not easily peel off the abrasive grains from the boundary between the electrodeposited abrasive part and the non-electrodeposited part even after long-term use. It is something that

(Means for Solving the Problem) In the present invention, the grinding surface is constituted by a convex abrasive electrodeposited portion and a concave abrasive non-electrodeposited portion, and the abrasive non-electrodeposited portion is provided on both sides or A first invention relating to a grinding wheel characterized by forming a thin plating layer connecting surrounding abrasive electrodeposited parts, and a grinding wheel that allows electrolyte to penetrate into the surface of the grinding wheel body but prevents abrasive grains from adhering. It is characterized by partially masking with a masking material that can prevent grinding, and immersing it in an electrolytic solution containing abrasive grains to electrodeposit the abrasive grains on the surface of the grinding wheel body and forming a thin plating layer on the masked part. and a second invention relating to a method for manufacturing a grinding wheel.

(Example) Next, the present invention will be explained in more detail with reference to an example of the illustrated shaft-equipped grindstone. (11 is a cylindrical grindstone body formed at the tip of the shaft (2) An abrasive electrodeposition part (3) is formed, for example, in a spiral shape on the outer peripheral surface of the abrasive grain electrodeposition part (3), as shown in an enlarged view in FIG. Super abrasive grains (4) such as or diamond abrasive grains are fixed to the surface of the grinding wheel body (1) by a plating part (5) formed by electrodeposition, and a spiral non-electrodeposited part ( 6) is formed in a concave shape between the abrasive grain electrodeposition parts (3).In the present invention, the bottom surface of the abrasive grain non-electrodeposition part (6) is formed by exposing the grinding wheel body (1) as in the conventional case. It is not a completely non-electrodeposited part, but a thin plating layer (7) is formed as shown in the figure, and this plating layer (
7) has a structure in which the abrasive grain electrodeposition parts (3) and (3) on both sides are connected.

To manufacture such a grinding wheel, a material such as cotton thread, which allows the electrolyte to penetrate but prevents the adhesion of abrasive grains, is used as a masking material on the surface of the grinding wheel body (1), and this is used as a masking material on the surface of the grinding wheel body (1). Use a method of partially masking the surface of the main body (1) by wrapping it in a spiral shape, immersing it in an electrolytic solution containing superabrasive grains, and performing electrodeposition according to a conventional method. I can do it. In this way, the masking material can prevent the abrasive grains from adhering to the abrasive grain non-electrodeposited areas (
6), and the electrolytic solution soaked into the masking material forms a thin plating layer (7) on the bottom surface of the abrasive non-electrodeposited area (6). Although the embodiments described above relate to a whetstone with a shaft, the form of the grinding wheel is not limited to this, and may be in various forms such as a disc-shaped one, a cup-shaped one, or a grinding stick. I can do it. Further, the shape of the abrasive grain non-electrodeposited portion (6) is not limited to a spiral shape, but may have any irregular shape such as a lattice shape or a checkered pattern.

(Function) A grinding wheel constructed in this way can be attached to a grinding machine or other grinding tool and used for grinding the inner surface of a hole, grinding the surface of a mold, etc., in the same way as a conventional grinding wheel. Since the grinding surface of the grindstone body (1) is formed in an uneven shape by the abrasive electrodeposited portion (3) and the abrasive non-electrodeposited portion (6), the abrasive grain non-electrodeposited portion (6) is uneven. The workpiece is efficiently ground by the edge portion, and chips are smoothly removed by the abrasive non-electrodeposited portion (6), making it possible to exhibit excellent grinding ability.

Furthermore, in the present invention, a thin plating N (7) is formed on the bottom surface of the abrasive grain non-electrodeposited part (6), and the abrasive grain electrodeposition part (6) on both sides is formed with thin plating N (7).
3) and (3) are connected, so compared to the conventional one shown in Fig. 3, in which the abrasive grain electrodeposition part (3) was cut off, the abrasive grain electrodeposition part (3) can be removed from a part of the corner. Peeling may occur <<,
There is no risk of abrasive grains peeling off or falling off even after long-term use.

Further, according to the second invention, the above grinding wheel can be easily manufactured by simply changing the material of the masking material.

(Effects of the Invention) As is clear from the above description, the present invention exhibits excellent grinding ability by making the grinding surface consist of an abrasive electrodeposited area and an abrasive non-electrodeposited area. Moreover, it is highly durable and does not easily cause the abrasive grains to peel off or fall off, so it will greatly contribute to the development of industry as a grinding wheel and its manufacturing method that eliminates the problems of conventional grinding wheels.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part thereof, and FIG. 3 is an enlarged sectional view showing the main part of a conventional example. (1): Grinding wheel main body, (3): Abrasive grain electrodeposition part, (6): Abrasive grain non-electrodeposition part, (7): Plating layer. Patent applicant: FSK Co., Ltd. Representative: Akira Shima
Buma Watanuki Tatsu Likai Yamamoto
Figure 1

Claims (1)

[Claims] 1. The grinding surface is constituted by a convex abrasive grain electrodeposition part (3) and a concave abrasive grain non-electrodeposition part (6), and the abrasive grain non-electrodeposition part (
6) has abrasive electrodeposition parts (3), (3) on both sides or around it.
A grinding wheel characterized by forming a thin plating layer (7) connecting the two. 2. Partially mask the surface of the grinding wheel body (1) with a masking material that allows electrolyte to penetrate but prevents abrasive grains from adhering, and immerses it in the electrolyte containing abrasive grains to remove the whetstone. A method for manufacturing a grinding wheel, characterized by electrodepositing abrasive grains on the surface of a main body (1) and forming a thin plating layer (7) on a masking part.