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NIOS Silver Jubilee Year
NIOS

Grinding

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Rural Technology

A grinding machine is a machine with abrasive wheel as the cutting tool. A job is hold against rotating wheel. It is mainly used for surface finish and to make tools sharp. Bench grinder is commonly found in workshop. Other types of grinder are belt grinder, surface grinder, cylindrical grinder etc.

Intext Questions

Match the following:

  1. Application........................ Tool
  2. To cut threads on bolt ................Lathe
  3. Cutting MS bar of 100mm dia............ drilling machine
  4. Sharpening of turning tool............. die
  5. To reduce diameter of a bar.............hacksaw
  6. To cut a drill on plate .............. grinding machine

What you have learnt

In this lesson, you have learnt about different types of manufacturing processes and tools used for the same. You learned about welding, drilling, threading tapping, turning and grinding. You also learned about different uses of lathe. You also learned about safety precautions to be taken while working in the workshop.

5.9 Terminal questions

1) Write down different types of operations that can be performed on lathe machine. 2) Write down safety rules for working in the workshop.

Answer to intext Questions

5.1 i) forged ii) butt iii) Oxy-acetylene 5.2 Match the folowing Application Tool To cut threads on bolt die Cutting MS bar of 100mm dia. hacksaw Sharpening of turning tool grinding machine To reduce diameter of a bar lathe To cut a drill on plate drilling machine

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Rural Technology