UNIT 3 specifications and selection, types of grinding process

Knowledge: Which of the following materials is NOT commonly used as a bond material in grinding wheels?

• a) Rubber
• b) Shellac
• c) Bakelite
• d) Iron

Comprehension: Which of the following is NOT a type of surface grinding machine?

• a) Horizontal-spindle, reciprocating table
• b) Vertical-spindle, rotary table
• c) Horizontal-spindle, rotary table
• d) Cylindrical

Application: What type of grinding wheel is best suited for grinding tungsten carbide tool bits?

• a) Aluminum oxide
• b) Silicon carbide
• c) Diamond
• d) CBN

Knowledge: Which of the following is a characteristic of a soft-grade grinding wheel?

• a) Harder and more brittle
• b) Longer wheel life
• c) Greater material removal rate
• d) Smoother finish

Comprehension: Which of the following types of grinding machines uses a regulating wheel to control workpiece rotation and feed rate?

• a) Surface grinder
• b) Cylindrical grinder
• c) Centerless grinder
• d) Tool and cutter grinder

Application: What is the primary function of the bond material in a grinding wheel?

• a) To hold the abrasive grains together
• b) To provide lubrication during grinding
• c) To cool the grinding zone
• d) To provide electrical conductivity