Transcript Peen Hammers - HanscombsGarage

Metals Processing 110
What Every Machinist Needs to Know
about
Metals Hand Tools
Machinist Vise
Solid Base Vise
Swivel Base Vise
Vise Jaw Caps
(Soft Jaws)
Used to prevent marking the work
Peen Hammers
Ball Peen Hammer
(Machinist’s Hammer)
Cross Peen Hammer
Straight and Cross
Peen Hammers
Soft Face Hammers
With Interchangeable Faces
Metal Stamps
For placing Names,
Serial Numbers, etc.
Hacksaws
Solid frame
hacksaw
Adjustable frame
hacksaw
Hacksaw Blades
Hacksaw teeth
Should point toward
The front end of the saw
Tooth Pitch
(Teeth per Inch)
Blades are made from
High carbon Steel
High Speed Steel (molybdenum alloy
or Tungsten alloy)
Saw Tooth Pitch
SET: bending the teeth
of a saw left and right to
make the KERF wider than
the saw blade
Blade
Set
Kerf
Saw Teeth Too Big???
Too Small???
Installing a Blade
1. Get correct blade
(length, pitch, material, type)
2. Adjust Frame
3. Place ends of blade on pins
with teeth pointing to front
and teeth down
4. Tighten wing nut finger tight
Pins
Wing nut for
tightening/loosening
blade
Sawing Sheet (Thin) Metal
Sandwich the metal
between strips of
wood.
This will keep the
thin metal from
vibrating and allows
2 or more teeth to
contact the work
Chisels
Cut Sheet
Metal
Cut V-Grooves
Cut Keyways
Cut Oil Grooves
Parts of a File
6
5
4
3
1.
2.
3.
4.
5.
6.
Tang
Heel
Edge
Face
Point
Length
2
1
File Grades of Coarseness
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Files come in different sizes and
degrees of coarseness
There are 4 common grades
plus 2 which are not often used
Dead Smooth
Smooth
Second Cut
Bastard
Coarse
Rough
Files are also sold in 7 different lengths in inches
4
8
6
12
10
16
14
Draw Filing
Draw filing allows you to
remove small amounts
of metal, keep a surface
flat and produces a nice,
smooth surface finish
Use a mill file
Hold the file crossways
Keep fingers close to the
Surface being filed
Press down
Move the file back and forth
Do not roll over the edges
Hand Taps
Flutes are grooves in the tap
Flutes provide cutting edges, provide chip
clearance and allow cutting fluid in
Used to cut screw threads inside a hole
So, What Does ½-UNC-13 Mean?
The fraction “1/2”
is the diameter in
inches of the threaded
part of the bolt or screw
½ inch
UNC means it is a Unified National Coarse series
Thread Inch threads are either Coarse or Fine (UNF)
The number after
the series (UNC)
is the Number of
threads per inch
13 threads
The pitch or size
of one thread here
Is 1/13 of an inch
So, What Does M30-3.5 Mean?
The letter “M” just means it’s a Metric thread
The number “30”
is the diameter of
the threaded part
Of the bolt or screw
30 mm
3.5 mm
The number after
The dash (3.5) is the
Pitch of the thread
Pitch (the size of one thread)
or how far the thread travels
when the screw makes one turn
A Set of Taps
A set of taps includes a taper tap, plug tap and bottoming tap
Taper Tap
Used to start
a thread in a
hole
Plug Tap
Bottoming Tap
Used to start
Used to thread to
a thread and go
the bottom
almost to the bottom
of a blind hole
of a blind hole
That’s All, Folks