| 摘要 |
An adapter for connecting a tool bit (9) to a drive device (13) which is provided with a chuck (12) and which is intended for rotating the tool bit forms a unit which is separate in relation to the drive device (13) and which is adapted to be firmly clamped in the chuck (12) and includes a tool-bit accommodating sleeve (1). This sleeve is adapted to be accommodated in the chuck (12) with substantially only a widened or flared forward end-part (2) of said sleeve located outside the chuck, said end-part having a coherent annular end-surface (7). The sleeve (1) is slotted (6) axially along a part of its length located rearwardly of said end-part, and the tool bit (9) can be firmly held in any selected axial position in the sleeve (1) by radial contraction of the slotted part of the sleeve by means of the chuck (12) when firmly clamping the sleeve in the chuck. |
