Question
Download Solution PDFChoose a drilling machine for drilling multiple holes of larger diameters
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFRadial drilling machine
The radial drilling 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 a centre.
Therefore, the drill spindle can cover the entire working surface of the table. The arm can be lifted or lowered.
Radial drilling machines are used to drill
- large diameter holes
- multiple holes in one setting of the work
- heavy and large work-pieces
Pillar drilling machine
Pillar drilling machine is an enlarged version of the sensitive bench drilling machine. These drilling machines are mounted on the floor and driven by more powerful electric motors.
These machines are provided with a rack and pinion mechanism to raise the table for setting the work. Parts of pillar drilling machines are shown here:
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