Grinding Machine Introduction Quiz

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the purpose of grinding in the metal cutting operation?

To remove a large volume of metal

To increase the material removed from the work

To obtain very high dimensional accuracy (correct)

To create a rough surface finish

Which type of grinding machine is used to remove excess metal from cast parts and welded joints?

Hand grinding machine (correct)

Cylindrical grinding machine

Internal grinding machine

Surface grinding machine

What is the accuracy level of the grinding process mentioned in the text?

$0.000025mm$ (correct)

$0.00025mm$

$0.0000025mm$

$0.0025mm$

Which type of grinding machine is used to finish parts to very accurate dimensions?

Precision grinding machine Signup and view all the answers

Which type of grinding machine is used for removing stock with no reference to the accuracy of results?

Hand grinding machine Signup and view all the answers

What is the main cutting tool used during the grinding operation?

Abrasive wheel Signup and view all the answers

Which natural abrasive has a greater hardness and abrasive action than sandstone?

Corundum Signup and view all the answers

What is the manufacturing process for silicon carbide abrasives?

Mix silica, powdered coke, salt, and sawdust in a long rectangular electric furnace Signup and view all the answers

What is the trade name for silicon carbide abrasives?

Carborundum Signup and view all the answers

Which natural abrasive is used in making grinding wheels for cemented carbide tools?

Diamond Signup and view all the answers

Which abrasive material has a higher toughness compared to silicon carbide?

Aluminium oxide Signup and view all the answers

What does the grade of a grinding wheel refer to?

The resistance the bond offers to dislodging of abrasives Signup and view all the answers

What term refers to the relative spacing occupied by the abrasives and bond in a grinding wheel?

Structure Signup and view all the answers

What is the first element in the Indian standard marking system for grinding wheels?

Manufacturer's abrasive type symbol Signup and view all the answers

What is the main purpose of cylindrical grinders?

To grind external surfaces Signup and view all the answers

Which type of surface grinder leaves a criss-cross pattern of grinding scratches on the work surface?

Vertical spindle and reciprocating table type Signup and view all the answers

What is the main operation involved in removing excess material from metal parts using a grinding wheel?

Grinding operations Signup and view all the answers

Which type of grinding machine is used specifically for accurately grinding gears?

Gear grinding machine Signup and view all the answers

What is the main characteristic of a grinding wheel?

It is a multi-tooth cutter with hard abrasives having sharp edges Signup and view all the answers

Which category do grinding wheels fall into based on their construction?

Solid grinding wheels Signup and view all the answers

What is the purpose of a diamond tool dresser in taper grinding?

To true the face of the grinding wheel to the required angle Signup and view all the answers

Which abrasive is obtained from the Earth's crust and is used to grind softer materials only?

Emery Signup and view all the answers

Study Notes

Grinding Operation

The purpose of grinding in metal cutting is to remove excess material from metal parts.

Types of Grinding Machines

The type of grinding machine used to remove excess metal from cast parts and welded joints is a rough grinding machine.
The type of grinding machine used to finish parts to very accurate dimensions is a precision grinding machine.
The type of grinding machine used for removing stock with no reference to the accuracy of results is a rough grinding machine.

Accuracy of Grinding Process

The accuracy level of the grinding process is high, with a precision of up to 0.001 mm.

Cutting Tool

The main cutting tool used during the grinding operation is an abrasive wheel.

Abrasives

Corundum is a natural abrasive that has a greater hardness and abrasive action than sandstone.
Silicon carbide abrasives are manufactured through a process of reacting silica and carbon in an electric furnace.
The trade name for silicon carbide abrasives is Carborundum.
Diamond is used in making grinding wheels for cemented carbide tools.
Diamond has a higher toughness compared to silicon carbide.

Grinding Wheel Characteristics

The grade of a grinding wheel refers to its hardness.
The structure of a grinding wheel refers to the relative spacing occupied by the abrasives and bond.
The Indian standard marking system for grinding wheels starts with the letter "A".

Cylindrical Grinders

The main purpose of cylindrical grinders is to grind cylindrical surfaces.

Surface Grinders

The type of surface grinder that leaves a criss-cross pattern of grinding scratches on the work surface is a reciprocating surface grinder.

Gear Grinding

The type of grinding machine used specifically for accurately grinding gears is a gear grinder.

Grinding Wheel Construction

Grinding wheels fall into the category of bonded abrasives.
The main characteristic of a grinding wheel is its ability to cut and polish metal surfaces.

Diamond Tool Dresser

The purpose of a diamond tool dresser in taper grinding is to restore the grinding wheel's cutting ability.
Emery is an abrasive that is obtained from the Earth's crust and is used to grind softer materials only.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on the introduction to grinding machines and the grinding process, which involves metal cutting using abrasive wheels for high dimensional accuracy. Explore the importance of grinding in machining operations.