Question
Download Solution PDFWhich machine is used to make accurate holes?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Bench type drilling machine: This is used for light duty drilling work. It is designed to drill small holes.
Pillar type drilling machine: It is fixed on the floor with a long pillar. It is used to drill large holes.
Portable type drilling machine:
- It is a very small, compact and self-contained unit carrying a small electric motor inside it.
- It is very commonly used for drilling holes in such components that cannot be transported to the shop due to their size or weight.
Gang type drilling machine:
- It is a type of multiple spindle drilling machine, in which the spindles are arranged in a row.
- These spindles may be driven either separately or collectively.
- This machine is very useful when the nature of work is such that a number of operations like drilling, reaming, counter boring and tapping, etc. are to be performed in succession on it.
- This machine is used to make accurate holes. This is used in mass production.
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