Hand Tools - Part A Flashcards
Hacksaws are made up of 4 main parts, which are they
Frame,
Blade,
Handle,
Adjustable nut
Hacksaw frames are available in either _______ and _______ types
Hacksaw frames are available in either solid and adjustable types
Hacksaw blades are sized by ____, _____ and _______.
Hacksaw blades are sized by length, width and thickness
Hacksaw blade length is the distance between the ______ of the holes at each end of the blade
Centres
Standard hacksaw blades are available in two lengths
10 and 12 inches in length, standard 1/2 inch width and 0.025
Saw blade pitch refers to the number of _________
Saw blade pitch refers to the number of saw blade teeth per inch
Hacksaw blades are manufactured in pitches of ___, ___, ___ and ___.
14, 18, 24 and 32
The 14-pitch blade is used for cutting
Soft, thick, heavy cross sections of steel, iron, brass, bronze, copper and aluminum.
The 18-pitch blade is used for
Alloy steals, iron pipe and light angle iron.
Most satisfactory blade pitch for general shop use is
18-pitch blade
The 24-pitch blade is used for cutting material with a small cross-section, which includes
High carbon steel drill rod, medium sheet metal and heavy tubing
The 32-pitch blade is used for
Thin sheet metal and tubing, stainless steels and tool steels
Choose a coarse pitch blade for
Soft material
Choose a fine pitch blade for
Hard materials
Choose a coarse pitch blade for large heavy sections but take into account the _______ of the material
Hardness
A coarse pitch blade provides better _____ ______, which prevents chips from clogging the blade
Chip clearance
How many saw blade teeth must be in contact either the work piece at all times
Atleast 3
The types of blade sets used for hacksaw are:
The straight set blade, with one tooth set to the right and the next to the left,
The wavy set, with one set of waves to the right and the next to the left
The term used to identify the width of the cut in the work material is the
Kerf, the measurement between the left teeth to the right teeth, measuring the full cut
A hole saw set is used to
Core out a hole
Name the 6 parts of a file
Tang Heel Face Length Edge Point
The tang is the pointed section where the file ______ is fitted
Handle
The length of a file is measured from the _____ to the _____
Point to the heel, the tang is not included
What is a safe edge on a file?
When the edge is left smooth, allows you to file a shoulder without damaging a finished surface
Cuts of a file
Single cut
Double cut
Rasp
Curved
What files are the most common types found in the workplace
Single and double cut files
Single cut files have
One set of teeth running parallel to each other, 45° to 85°
Single cut files produce a ______ finish
Smooth
Double cut files have
Two intersecting rows of teeth which cross the face of the file
The intersecting rows of a double cut file provides
Effortless chip removal and high metal removal rate
Rasp files are generally used for
Large material removal of soft materials (wood, plastic)
Curved tooth files are are used in autonomy trade to remove
Body filler on flat or curved surfaces
Special Curved tooth files can remove metal quickly while producing a
Smooth finish
The coarseness of a file is defined in sequence by the terms:
Rough Coarse Bayard Second-cut Smooth Dead smooth
There are five main classes of files, which are
Mill or saw files Machinist Swiss pattern Rasps Curved tooth
This cutting tool has an unbroken continuous tooth form and is made from both carbide and high speed steel
Rotary burrs
Rotary burrs are used for cutting non-ferrous metals such as
Brass
Aluminum
Bronze
These tools differ from burrs in that the cutting tooth line is broken
Rotary files
Rotary files are useful for cutting what
Tool steels
Tough alloy steels
Casting
Forgings
Cross filling is used when
Large amounts of material have to be removed
Draw filing is used to produce
A good surface finish
The 3 common types of scrapers are
Flat
Triangular
Bearing
Deburring tools are used to
Debur holes and internal curved surfaces
Types of chisels (4)
Flat or cold chisels
Cape chisels
Diamond point chisels
Round nose chisels
The flat or cold chisels can be used to
Cut the heads of rivets
Spilt nuts
Cut sheet metal
Reduce the size of a flat surface
The cape chisel can be used for
Cutting keyseats in shafts and for chipping narrow grooves and channels is metal
Round nose chisels are used to cut
Oil grooves in journal bearings
The diamond point chisels are used for
Squaring 90° corners of a key seat in a shaft
Snips used primarily for straight cuts are (3)
Tinners (straight pattern)
Combination snips
Bulldog snips
Snips used primarily for curved cutd are (2)
Compound action snips
Circle snips
The two types of vise used by millwrights are
Bench vises
Pipe vises
The size of a bench vise in designated by the width of
It’s jaws
Most common hammer used in machinery construction or maintenance is
The ball-peen hammer
The ____________ hammer has a wedge shape that is parallel to the axis of the hammer shaft
The straight-peen hammer
Cross-peen hammer is similar to the straight-peen hammer with one difference, which is
The position of the wedge, which is perpendicular to the hammer shaft
The _________ is a hammer used where larger forces are required
Sledgehammer
Soft hammers are used where hard steel hammers would damage
A finished surface
A ___________ hammer is a plastic hammer with a head filled with steel or lead shot.
Dead-blow hammer
What punches are used to mark the location of holes to be drilled
Centre punch
What punches are used to mark out permanent layout lines on work pieces
Prick punches
What punch makes marked of a uniform size without the use of a hammer?
Automatic centre punch
What punches have a long shank, which should be slightly undersized from the punchs nominal diameter
A pin punch
What punches are tapered and are used to align holes in two or more pieces of plate or parts that must be joined together
A drift punch
What is a transfer punch used for
To transfer positions of the hole from one piece to another
What is used to mark a work piece permanently
Metal stamps
What types of screw drivers are most commonly used in industry (3)
Phillips
Robertson
Standard (flat blade)
What wrench fully encloses the nut or bolt head
Box-end wrenches
Box end wrenches come in what point designs
6 and 12 point design
What wrench is open at one end of the wrench and box end at the opposite side, both ends being the same size
Combination wrench
Sockets are made with __ or __ points of contact
6 or 12
This wrench is useful for odd-sized nuts or for holding a bolt head while the nut is torqued with the correct sized wrench
Adjustable wrench
When using an adjustable wrench, position it so the force acts against the
Solid jaws rather than the movable jaw
This wrench is designed to fit into the socket of a set screw or a socket head cap screw
Hexagon socket wrenches (Allen wrenches)
What wrench is a precision tool that is used for tightening fasteners that prevents over or under tightening
Torque wrench
What wrench is designed with serrated adjustable jaws, which makes it possible to grip round pipe and other cylindrical parts
A pipe wrench
What are pinch bars used for
Prying
Separating machine components
Alignment
What pliers are adjustable over a wider range than slip joint pliers and ensures a good grip even when the force is on only one handle
The tongue and groove pliers
What pliers are used for holding and gripping small parts in situations where it is unsafe or inconvenient to use your hands
Slip joint (combination pliers)
What pliers are made with cutting blades on one side of the jaws and are used mostly for gripping, bending and cutting wire
Lineman pliers
These types of plies are manufactured with a thin nose or jaws
Needle nose pliers
Pliers with adjustable jaws that provide unusually high gripping power are called
Locking pliers (vise grips)
Type of clamp to hold a work piece during layout assembly or disassembly
C-clamps
Heavy duty c-clamps are used to hold steel while
Fitting or welding operations
