| 摘要 |
<p>A tool attachment assembly comprising: a housing (22) having a central axis; a tool holder (14) having a central axis; and means (54, 56) cooperating between the housing characterised by (22) and tool holder (14) for maintaining the tool holder in an operative state on the housing (22) and for guiding movement of the tool holder (14) axially relative to the housing (22) between a) a first portion, wherein relative radial movement between the housing (22) and tool holder (14) is substantially prevented and b) a second position wherein the tool holder can float radially relative to the housing. <IMAGE></p> |
