Question
Download Solution PDFThe taper shank drills are held on the machine by means of:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Taper shank drills:
- Taper shank drills have a morse taper.
- Sleeves and sockets are made with the same taper so that the taper shank of the drill.
- When engaged, it will give a good wedging action.
- Due to this reason, morse tapers are called self-holding tapers.
- The taper shank drills are held on the machine by means of sleeves.
- Drills are provided with five different sizes of morse tapers and are numbered from MT1 to MT5.
- In order to make up for the difference in sizes between the shanks of the drills and the type of machine spindles, sleeves of different sizes are used.
- When the drill taper shank is bigger than the machine spindle, taper sockets are used.
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While fixing the drill in a socket or sleeves the tang portion should align in the slot.
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This will facilitate the removal of the drill or sleeve from the machine spindle.
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Drift is used to remove the drills and sockets from the machine spindle.
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