Patent ID: 7134949

Claim:
A constant angular grinding tool comprising: a profile wheel whose grinding face is formed with a predetermined inclination angle extending from a front face thereof to a new face thereof with respect to the axis of a spindle of a rotary electric tool; a first guide plate which is a disc member attached rotatably to a spindle between said profile wheel and said rotary electric tool so as to guide for a grinding direction by bringing the edge of the disc member into a contact with the reference level of a material to control the inclination angle; and a second guide plate which is a disc member attached rotatably to a spindle between said first guide plate and said profile wheel and whose outer peripheral end face makes contact with the edge of said material to control a grinding distance from the edge, wherein said profile wheel, the first guide plate and the second guide plate are fixed to the spindle of said rotary electric tool with a lock nut such that they are perpendicular thereto, and wherein said first guide plate is a disc member having a bearing fitting hole in the center thereof and larger than the maximum diameter of the grinding face of said profile wheel and mounting thereof to the spindle of said rotary electric tool is carried out through a first bearing fitted to the bearing fitting hole for mounting said first guide plate to the spindle.