Podcast
Questions and Answers
What is the angle between the tool face and the plane parallel to the tool's base called?
What is the angle between the tool face and the plane parallel to the tool's base called?
The normal back rake angle of a carbide single point cutting tool for machining aluminum is usually between 0 to 50 degrees.
The normal back rake angle of a carbide single point cutting tool for machining aluminum is usually between 0 to 50 degrees.
True
What is the recommended value of rake angle for machining aluminum with a cemented carbide tool?
What is the recommended value of rake angle for machining aluminum with a cemented carbide tool?
15 degrees
The side rake angle of a single point tool is crucial for controlling the ______ formation.
The side rake angle of a single point tool is crucial for controlling the ______ formation.
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Which of the following would NOT be an example of oblique cutting?
Which of the following would NOT be an example of oblique cutting?
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For softer materials, the point angle of a drill is recommended to be increased.
For softer materials, the point angle of a drill is recommended to be increased.
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What happens to the cutting force with an increase in the nose radius of a single point cutting tool?
What happens to the cutting force with an increase in the nose radius of a single point cutting tool?
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Match the following angles with their respective functions:
Match the following angles with their respective functions:
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Which work holding device is preferred for shaping a key-way in a cylindrical shaft?
Which work holding device is preferred for shaping a key-way in a cylindrical shaft?
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The feeding of the job in a shaper is done using the movement of the ram.
The feeding of the job in a shaper is done using the movement of the ram.
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What is the function of a clapper box in a shaper?
What is the function of a clapper box in a shaper?
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The size of a planer is specified by its ______.
The size of a planer is specified by its ______.
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Which of the following is not a part of a shaper?
Which of the following is not a part of a shaper?
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Match the following components with their functions in shaping:
Match the following components with their functions in shaping:
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For accurately spaced splines in a shaft, the work should be mounted in:
For accurately spaced splines in a shaft, the work should be mounted in:
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Spinning on a lathe is considered a non-chip removal process.
Spinning on a lathe is considered a non-chip removal process.
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Which of the following alloys is primarily used for cast tool alloys?
Which of the following alloys is primarily used for cast tool alloys?
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A fly cutter is used on a lathe.
A fly cutter is used on a lathe.
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What is the purpose of the tumbler gear?
What is the purpose of the tumbler gear?
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Power from the leadscrew to the carriage in a lathe is transmitted through a ______.
Power from the leadscrew to the carriage in a lathe is transmitted through a ______.
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Which machine tool applies feed motion to the tool?
Which machine tool applies feed motion to the tool?
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Match the machine tools with their uses:
Match the machine tools with their uses:
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Cobalt, boron, and aluminium are principal components of cast tool alloys.
Cobalt, boron, and aluminium are principal components of cast tool alloys.
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What type of machine tool uses a fly cutter?
What type of machine tool uses a fly cutter?
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Which type of file is preferred for filing brass or bronze?
Which type of file is preferred for filing brass or bronze?
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A band saw machine employs a continuous looped blade driven by two wheels.
A band saw machine employs a continuous looped blade driven by two wheels.
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What is the next higher spindle speed in a geometrical progression series if the given speeds are 160, 229, 328, and 496?
What is the next higher spindle speed in a geometrical progression series if the given speeds are 160, 229, 328, and 496?
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To clean a file, it should be cleaned with a __________.
To clean a file, it should be cleaned with a __________.
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What is the common ratio for spindle speeds in geometric progression?
What is the common ratio for spindle speeds in geometric progression?
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Collet chucks are suitable for machining castings on a lathe.
Collet chucks are suitable for machining castings on a lathe.
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What type of power saw is known for its continuous looped blade?
What type of power saw is known for its continuous looped blade?
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Match the following tools with their appropriate usage:
Match the following tools with their appropriate usage:
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What is the typical depth of cut for finish grinding of steel in a surface grinder?
What is the typical depth of cut for finish grinding of steel in a surface grinder?
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Goose neck tools are preferred on planers because they minimize digging in and scoring of the work.
Goose neck tools are preferred on planers because they minimize digging in and scoring of the work.
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What angle should be used for drilling harder materials?
What angle should be used for drilling harder materials?
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The cylindrical job should always be clamped on a ______ for drilling operations.
The cylindrical job should always be clamped on a ______ for drilling operations.
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Match the machining operations with their characteristics:
Match the machining operations with their characteristics:
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For ferrous materials, what is the typical helix angle of a drill?
For ferrous materials, what is the typical helix angle of a drill?
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The cutting edges of a standard twist drill are called flutes.
The cutting edges of a standard twist drill are called flutes.
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What is the purpose of thinning the point of a twist drill?
What is the purpose of thinning the point of a twist drill?
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Which cutting fluid is suitable for use with carbide tools?
Which cutting fluid is suitable for use with carbide tools?
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Crater wear primarily occurs due to the phenomenon of diffusion.
Crater wear primarily occurs due to the phenomenon of diffusion.
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What is the best coolant and lubricant for steel and wrought iron?
What is the best coolant and lubricant for steel and wrought iron?
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Chips with built up edge can be expected when machining ______ materials.
Chips with built up edge can be expected when machining ______ materials.
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How is the sector arm in the indexing head adjusted?
How is the sector arm in the indexing head adjusted?
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What is the degree of movement produced by one complete turn of the index crank?
What is the degree of movement produced by one complete turn of the index crank?
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Match the following cutting phenomena with their definitions:
Match the following cutting phenomena with their definitions:
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The highest cutting speed with H.S.S tools is used while machining bronze.
The highest cutting speed with H.S.S tools is used while machining bronze.
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Study Notes
Work Holding Devices
- Cylindrical parts are held on planers using V-blocks, T-blocks, and clamps.
- Toe dogs and clamping stops are work holding devices.
- Magnetic vises are also used.
- V-blocks are preferred for shaping keyways in cylindrical shafts.
- A shaper vise is suitable for shaping splines.
- Workpieces are often held between indexing centers when accurately spacing splines.
Shaping Machine Operation
- The job is fed in a shaper by table movement.
- Feeding occurs at the end of the return stroke.
- Clapper box movements and/or ram movements don't feed the job.
- Shapers have tools as well as a table and ram. The cross slide is not a shaper part.
Cutting Tool Angles and Materials
- Rake angle is the angle between the tool face and a plane parallel to the tool's base.
- Rake angle affects chip formation.
- Recommended rake angle for aluminum machining with carbide tools is 15 degrees.
- Back rake angles for carbide tools machining aluminum are generally between 0 and 5 degrees.
- Point angles for drills are adjusted for material hardness—softer materials require smaller angles.
Drilling Operations
- Twist drill cutting edges are thinned to reduce axial feed pressure.
- Cylindrical jobs are typically clamped on V-blocks for drilling.
- Drilling is considered a uniform cutting process.
- Helix angle for ferrous materials is typically 30 degrees.
Other Machine Tools and Operations
- Tool alloys high-temperature strength and wear resistance are cobalt, chromium, and tungsten.
- Power from the lathe's leadscrew is transmitted through a half-nut.
- Fly cutters are used on milling machines.
- Tumbler gears are related to lathe mechanisms.
- Coolants like water-soluble oils are well-suited for steels and wrought iron.
- Tool wear such as crater wear is mostly due to diffusion.
- Finish grinding depth of cut is between 0.005 and 0.01 mm for steel.
- Goose-neck tools are preferred on planers and slotters to minimize digging in and scoring the workpiece.
- The number of holes between the indexing head's bevelled edges equals the indexing number plus one.
- Spindle speeds are often in geometric progressions
- File type preference for brass or bronze is the coarse-cut or rough-cut file.
- A file cleaning method is a file card.
- Band saws are continuous looped blade power saws.
- A lathe holding device for castings is a four-jaw chuck.
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Description
This quiz covers the essential work holding devices used in shaping machine operations, including various clamps and vises. It also explores cutting tool angles and materials for effective machining. Test your understanding of how these components interact in manufacturing processes.
