RADIAL DRILLIING MACHINES
. state the features of a radial drilliing machine
Radial drilliing machines are used to drill
Large diameter holes
Multiple holes in one setting of the work
Heavy and large workpieces.
Features
The radial drilliing machine has a radial arm on which the spindle head is mounted. The spindle head can be moved along the radial arm and can be locked in any position.The arm is supported by a pillar (column). It can be rotated about with the pillar as centre. Therefore, the drill spindle can over the entire working surface of the table. The arm can be lifted or lowered. The motor mounted on the spindle head rotates the spindle. The variable speed gear box provides a large range of R.P.M. The spindle can be rotated in both clockwise and anticlockwise directions. Angular hols can be drilled on machines having tilting tables. A coolant tank is mounted on the base.
Hints
Ensure that the spindle-head and the arms are locked properly to avoid vibration
The workpiece and the drill should be rigidly held.
Bring back the spindle-head nearer to the pillar after use
Switch off power when not in use
Use the drill drift for removing the drills, chucks or sockets
Use a minimum number of sockets and sleeves to make for the spindle box size
Clean and oil the machine after use
Stop the machine to remove the swarf
Use a brush to clean the chips and swarf
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