Machinist Grinder 4th Sem - NSQF - Module 4 : Thread grinding

What is marked as ‘x’ in thread grinder?

• Head stock

• Draw bar

• Face plate

• Steel blocks

Where the work holding device is mounted on the thread grinding machine?

• Wheel head
• Cutter head
• Head stock
• Tail stock

What is the type of operation?

• Thread grinding

• Thread cutting

• Gear hobbing

• Gear grinding

How to calculate depth of square thread?

• 0.05
• N 0.5
• 0.5
• N 0.005

What type of wheel is used to grind crest of the thread?

• Multi rib wheel
• Flat face wheel
• Single rib wheel
• Dual rib wheel

Which type of wheel is selected to grind annular grooves?

• Multi rib wheel
• Flat face wheel
• Single rib wheel
• Dual rib wheel

Which work holding device is used for grinding similar parts?

• Magnetic chuck
• Face plate
• Jigs
• Chuck

Which method is used for grinding coarse pitch and double start threads?

• Multi rib method
• Single rib method
• Plunge grinding
• Dual-rib method

How the depth of worm thread is calculated?

• 0.623 x P
• 0.523 x P
• 0.723 x P
• 0.423 x P

Which type of wheel is used for grinding hobs?

• Single rib wheel
• Flat face wheel
• Multi rib wheel
• Dual-rib wheel