Grinding Machine Introduction

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What are the two types of cylindrical grinding machines mentioned in the text?

Plain and tapered

External and internal (correct)

Reciprocating and rotary

Vertical and horizontal

Which type of surface grinder is characterized by leaving a criss-cross pattern of grinding scratches on the work surface?

Vertical spindle and reciprocating table type

Vertical spindle and rotary table type (correct)

Horizontal spindle and reciprocating table type

Horizontal spindle and rotary table type

What operation involves removing excess material from metal parts using a grinding wheel made of hard abrasives?

Taper grinding

Cylindrical grinding (correct)

Gear grinding

Thread grinding

In which gear grinding process are two saucer shaped grinding wheels used?

Generating process Signup and view all the answers

What classification of grinding wheels is made up of many hard particles known as abrasives with sharp edges?

Solid grinding wheels Signup and view all the answers

Which principal group does diamond belong to according to abrasive classification?

Natural abrasives Signup and view all the answers

What is emery used for as an abrasive?

To grind softer materials only Signup and view all the answers

Which type of surface grinder has the majority that are of horizontal spindle types?

Horizontal spindle and rotary table type Signup and view all the answers

How does taper grinding on long workpieces differ from taper grinding on short workpieces?

By swivelling the upper table for long workpieces and swivelling the wheelhead for short workpieces. Signup and view all the answers

In thread grinding machines, how is the grinding wheel shaped?

To match the thread profile Signup and view all the answers

What is the main purpose of grinding in machining processes?

To obtain high dimensional accuracy Signup and view all the answers

Which type of grinding machine is used to remove excess metal from cast parts with no regard to accuracy?

Hand grinding machine Signup and view all the answers

What is the level of accuracy achieved in the grinding process?

0.000025mm Signup and view all the answers

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

Surface grinding machine Signup and view all the answers

What do precision grinders primarily focus on when finishing parts?

Accuracy of dimensions Signup and view all the answers

Which type of grinding machines are used to remove excess metal from welded joints?

Floor stands grinding machines Signup and view all the answers

What is the hardest available natural abrasive?

Diamond Signup and view all the answers

What substance is employed to hold abrasive grains together in the form of grinding wheels?

Bond Signup and view all the answers

Which abrasive material is used for grinding materials of low tensile strength like ceramic materials?

Silicon carbide Signup and view all the answers

Which abrasive material is better adapted for grinding materials of high tensile strength like most steels?

Aluminium oxide Signup and view all the answers

What is the grain size that indicates a large grain of abrasive in the grinding wheel?

Coarse Signup and view all the answers

What does the grade of a grinding wheel refer to?

'Soft' or 'hard' bond types Signup and view all the answers

What type of bond holds abrasive grains more securely in a grinding wheel?

'Hard' Signup and view all the answers

What does the structure of a grinding wheel refer to?

'Dense' or 'open' spacing between abrasives Signup and view all the answers

What Indian standard marking element represents the size of abrasive in a grinding wheel?

'Second element (number)' Signup and view all the answers

'Green grit' and 'black grit' are associated with which type of artificial abrasive?

'Silicon carbide abrasives' Signup and view all the answers