Abstract: Disclosed is a storage case for a cutting tool, the storage case including a bit housing for receiving a tool bit of the cutting tool and a shank housing for receiving a shank, of which a lower end of the bit housing is overlapped with an upper end of the shank housing. A sleeve that is rotatably fitted on an upper portion of the shank housing, and the lower end of the shank housing is fitted onto an outer peripheral surface of the sleeve. An inner peripheral surface of the sleeve and an outer peripheral surface of an upper portion of the shank housing are provided with complementary recessed portions, in which in a process of rotating the shank housing while holding the bit housing, the recessed portions are not aligned with each other, and the sleeve gets wider outwardly to fix the bit housing, while the upper portion of the shank housing gets narrower inwardly to fix the shank.

Abstract: Disclosed is a storage case for a cutting tool, the storage case including a bit housing for receiving a tool bit of the cutting tool and a shank housing for receiving a shank, of which a lower end of the bit housing is overlapped with an upper end of the shank housing. A sleeve that is rotatably fitted on an upper portion of the shank housing, and the lower end of the shank housing is fitted onto an outer peripheral surface of the sleeve. An inner peripheral surface of the sleeve and an outer peripheral surface of an upper portion of the shank housing are provided with complementary recessed portions, in which in a process of rotating the shank housing while holding the bit housing, the recessed portions are not aligned with each other, and the sleeve gets wider outwardly to fix the bit housing, while the upper portion of the shank housing gets narrower inwardly to fix the shank.