Abstract: The present invention relates to a method of manufacturing a main body of a grinding tool fixture, a grinding tool fixture having a cap at a front, a sleeve and a coil spring consecutively connected, and a main body connected at a rear, and the main body having a body and a rotating shaft integrally formed with a rear of the body. The main body of the grinding tool fixture is turned, heat-treated, and then straightened. According to the present invention, a grinding tool for a grinder can be conveniently attached and detached by reciprocating a sleeve such that a separate working tool or fastener is not required, and the grinding tool can be immediately replaced even during use of the grinder.

Abstract: The present invention relates to a device for detaching/attaching a hand grinder polishing disk, the device being clamped on the rotating shaft of a grinder main body so as to enable the easier and quicker detachment/attachment of a consumable polishing disk used for finishing, cutting, severing, etc. the surface of a target object, or to enable the definite prevention of loosening, vibration phenomenon, etc.

Abstract: The present inventive concept relates to a hand grinder including a grinder main body, a coupler including a power transfer member coupled to a rotary shaft of a grinder main body and a main body provided between the grinder main body and power transfer member, and a grinding disc including a grinding stone having a hollow disc plate and a coupling portion provided at a central portion of the grinding stone and detachably coupled to the coupler. A plurality of hook steps are radially arranged along an outer circumference of an upper end portion of the power transfer member, and a plurality of coupling pieces are radially arranged on an inner circumference of a central portion of the coupling portion. When the grinding disc is assembled such that the hook steps pass between the coupling pieces and the main body is rotated, a lower surface of the hook steps is placed on an upper surface of the coupling pieces and the grinding disc is fixed to the coupler.

Abstract: The present invention relates to a method of manufacturing a main body of a grinding tool fixture, a grinding tool fixture having a cap at a front, a sleeve and a coil spring consecutively connected, and a main body connected at a rear, and the main body having a body and a rotating shaft integrally formed with a rear of the body. The main body of the grinding tool fixture is turned, heat-treated, and then straightened. According to the present invention, a grinding tool for a grinder can be conveniently attached and detached by reciprocating a sleeve such that a separate working tool or fastener is not required, and the grinding tool can be immediately replaced even during use of the grinder.