Cutting tool holding device

摘要

A cutting tool holding device includes a base, a positioning tube and a positioning member. The base includes a mounting hole and a through hole, and the through hole is formed at a side of the mounting hole and communicated with the mounting hole. The positioning tube includes an axial receiving hole, an accommodated portion and a limiting groove. The axial receiving hole is formed within the positioning tube for receiving a cutting tool. The accommodated portion is disposed at an end of the positioning tube for being installed into the mounting hole. The limiting groove is formed on a side of the accommodated portion. The positioning member is positioned in the through hole of the base, wherein the positioning member abuts against the limiting groove of the positioning tube.

主权项

1. A cutting tool holding device, comprising:
a base, comprising:
a mounting hole; anda through hole formed at a side of the mounting hole and communicated with the mounting hole, wherein the through hole of the base is substantially circular, a screw member is disposed in one end of the through hole, and the screw member has a head and a threaded body; a positioning tube, comprising:
an axial receiving hole formed within the positioning tube for receiving a cutting tool;an accommodated portion disposed at an end of the positioning tube for being installed into the mounting hole;a limiting groove formed on a side of the accommodated portion; anda ridge portion disposed in the limiting groove of the positioning tube and having a first surface; and a positioning member positioned in the through hole of the base, wherein the positioning member abuts against the limiting groove of the positioning tube, the positioning member has a cross-sectional area changing gradually along an extending direction thereof which is configured for pressing the positioning tube, the positioning member is substantially formed in a tube shape corresponding to the through hole and is inserted into the through hole from the other end of the through hole, a positioning groove having an inclined plane is disposed on an outside of the positioning member, the positioning groove corresponds to the ridge portion, the inclined plane corresponds to and abuts against the first surface, a tightening thread is disposed on an inner surface of the positioning member for engaging with the threaded body of the screw member, whereby the positioning member is driven by the screw member for changing a pressing degree between the inclined plane and the positioning tube.