| 主权项 |
1. A positioning sleeve assembly adapted for engaging with different tool parts, the tool parts including drill bit holder or screwdriver bit, the positioning sleeve assembly comprising:
a sleeve formed with a receiving hole which has a first opening and a second opening formed at both ends of the sleeve, in the receiving hole being formed an inner annular groove, and an engaging cavity extends inward from the first opening and is in communication with the receiving hole; a positioning device including a stationary end abutted against the second opening, and a restricting end, an annular stop rib being formed on an inner surface of a stationary member and located adjacent to the stationary end; and an engaging device being provided at one end thereof with a drive shaft which is hexagonal in cross section, another end of the engaging device being formed with an inserting hole, the engaging device being inserted in the receiving hole in such a manner that the drive shaft is located at the first opening, and the another end of the engaging device formed with the inserting hole is located at the second opening and received within the positioning device, the engaging device being further provided at two ends thereof with a first fixing groove and a second fixing groove, respectively, a first clamping ring being engaged in the first fixing groove, and a second clamping ring being engaged in the second fixing groove in such a manner that the first clamping ring is stopped against the first opening of the sleeve, and the second clamping ring is stopped against the annular stop rib of the positioning device, the engaging device being further provided with a plurality of round holes which are in communication with the inserting hole, and in each of the round holes being disposed a steel ball, the tool parts being inserted in the inserting hole, and in the inserting hole being formed a third fixing groove for holding a third clamping ring which is used to fix the tool part. |
