Podcast
Questions and Answers
What is one reason for the use of hand tools?
What is one reason for the use of hand tools?
- To increase production speed
- To enhance automation
- To maintain high precision
- The work piece is too large (correct)
Hand tools are typically used to remove large amounts of material from extensive areas.
Hand tools are typically used to remove large amounts of material from extensive areas.
False (B)
What are the three classifications of hand files?
What are the three classifications of hand files?
Length, shape, cut
Hand tools are primarily used when __________ is too expensive to implement.
Hand tools are primarily used when __________ is too expensive to implement.
Match the hand tool functions with their descriptions:
Match the hand tool functions with their descriptions:
Flashcards
Hand Tools
Hand Tools
Tools used to remove small amounts of material from workpieces, typically in small areas.
Reasons for Using Hand Tools
Reasons for Using Hand Tools
Hand tools are essential when machines are unavailable or unsuitable for the workpiece size or shape.
Hand File
Hand File
A type of hand tool used for shaping and smoothing surfaces by removing small amounts of material.
Classifications of Hand Files
Classifications of Hand Files
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Cut (Tooth Shape) of Hand Files
Cut (Tooth Shape) of Hand Files
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Study Notes
Workshop Technology - Hand Processes
- Hand tools are used to remove small amounts of material from small areas of the workpiece.
- Hand tools are used when:
- No machine is available.
- The workpiece is too large.
- The workpiece shape is complicated.
- It is too expensive to set a machine.
Sample Hand Tools
- Screwdriver
- C-Clamp
- Pliers
- File
- Hammer
- Chisel
- Hacksaw
- Copying Saw
- Wood File
- Bench Drill
- Hand Drill
- Grinder
- Gimlet
- Adjustable Spanner
- Spanner/Wrench
- Vise
Other Hand Tools
- Engineer's files: Made of high carbon and heat-treated steel alloys, tougher than the materials being filed.
- Hacksaw: Used to cut various materials (steel, plastics, wood). The frame can be adjusted to accommodate different blade sizes. Blade size is measured by the number of teeth per inch (TPI). Higher TPI = finer blade.
- Cold Chisels: Used to cut metal, wood, or plastic. Made from hardened and tempered high-carbon steel. Types include firmer, bevel-edge, mortise, and gouge chisels. Correct cutting angle is crucial; 90° for digging, 0° for slipping.
- Scrapers: Used in metalworking to remove surface defects and high spots on machined parts. Also used in woodworking to smooth curved surfaces.
- Hammers: Made of hardened and tempered high-carbon steel. Vary in mass (0.1kg to 1kg). Usually have a wooden handle. Two ends: Face (flat striking surface) and Pein (various shapes for specific applications). Soft-faced hammers are used for soft metals like aluminum, often with copper or plastic inserts.
- ScrewDrivers: Common tools made of toughened alloy steel. Used only for tightening or loosening screws.
Hand Files
- Classified by:
- Length
- Shape
- Cut (tooth shape)
- Types:
- Flat (hand) Files: Used for general filing of metals like steel. Rectangular in section, safe edges.
- Half Round Files: Used for filing curved surfaces not suitable for flat files.
- Three Square Files: Useful for filing tight corners/sharp angles. Have three rectangular surfaces on a triangular section and allows fit into corners.
- Round Files: Very thin and fit into small holes/openings.
- Square Files: Thin and useful for filing slots with right corners.
- Grades: Rough, Bastard, Second Cut, Smooth, Very Smooth, based on teeth roughness/smoothness.
General Remarks
- Hand tools are used for scratching, filing, cutting, chiseling, and hammering.
- They are made from hardened and tempered high-quality steels.
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