| 摘要 |
<p>A radial arm saw, comprising a base having a column mounted thereon with a guide arm supported vertically movably on the column. The guide arm has an inverted U-shape. A saw member slides along the bottom of the guide arm by means of bearings engaging symmetrically arranged longitudinal grooves in the side walls of the arm. The grooves have lower faces inclined downwards towards the centerline. The bearings are similarly inclined and can be adjusted axially. A rectangular U-shaped locking spring is engaged with the saw member support so as to have one of the arm side walls between its arms. When the locking spring is compressed, the saw member is locked along the arm. An integral switch case is fitted within the arm and has an integral bendable cover to cover a recess for a power switch. The switch has an ON-button which can be locked to be inoperative. The back of the switch case and the arm support on the column have corresponding U-shaped grooves for fitting a wire support tray. The arm support includes a clamp guided by a key following a slot in the column. The saw blade is covered by a lower cover that swings upwardly as guided by matching ribs on the lower and upper covers.</p> |
