GRINDING BIT FOR PINNING METHOD, PINNING METHOD USING IT, AND ANCHOR PIN FOR USE IN PINNING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a grinding bit for a pinning method, which can form a head storage hole, corresponding to the diameter of a pin head of an anchor pin, without the need for skills and which can prolong the life of a tool, the pinning method using the grinding bit, and the anchor pin for use in the pinning method.;SOLUTION: The grinding bit 20 for the pinning method, which is mounted on an electric drill 15, makes the head storage hole 11 for housing the pin head 31 of the anchor pin 30 formed at the opening edge of an inserting and filling hole 10, which is drilled to a predetermined depth in a skeleton 2 while penetrating a finishing material 3, in advance of the insertion and infilling of the anchor pin 30. The grinding bit 20 comprises a shank 21, the base end side of which is held by the electric drill 15, and a spherically-formed grinding stone 22 which is provided at the leading end of the shank 21. The grinding stone 22 is formed in such a shape that its diameter R1 is almost equal to the diameter R2 of the pin head 31 of the anchor pin 30 to be used.;COPYRIGHT: (C)2007,JPO&INPIT