| 摘要 |
<p>A power tool spindle and tool-element assembly is provided which allows the tool element (10) to be threadably engaged with and tightened onto the spindle stud (18), and then subsequently removed after use, without the use of tools. The tool element (10) comprises a cut-off disc or saw blade (12) fitted with a fixed internally-threaded hub (14) that engages the threaded end (18) of the spindle (20). A shoulder (22) is formed on the spindle behind the threaded stud (18) and a thrust bearing (24) is positioned between the hub (14) and the shoulder (22) so as to take the axial clamping load as the tool element (10) is tightened onto the spindle. The thrust bearing allows ready removal of the tool element even though it may self-tighten onto the spindle under spin-up or heavy loading.</p> |
