Tools and Holding Devices
Text-based version
Tools and Holding Devicesg Tools
Word
"A" - clamp
Meaning
Context
"A" shaped clamping
device.
More Information
These clamps are versatile and easy
to use. They use a cam powered
action. They prevent twisting of
workpieces.
"A" - clamp
angle plate
Angle plate is used in
layout work and in
setting up the work
piece for drilling or
milling at a 90 degree
to the table.
Angle plates are a common layout accessory.
"C" - clamp
Angle plate / layout
Using "C" - clamps workpieces can
be fastened to angle plates for layout
operations.
"C" shaped clamping
device.
"C" - clamps are available from 1 to
16 inches.
Clamping devices are used by the operator
for safe handling and ease of operation.
center punch
Center punch is used
to enlarge prick punch
holes.
Center punch has an included point angle of
90 degrees.
Center punches are used to mark the
workpiece prior to machining
operations such as drilling and should
not be used in place of a layout
punch.
dividers
Dividers transfer
distances directly from
the rule to the work
and are used to scribe
equally spaced
divisions.
They are also used to
scribe arcs and circles.
drill vise
Dividers are usually set to rules.
Similar to a pencil compass, it
consists of two sharp points.
Dividers are available in various sizes.
Drill vise is a holding
device used for
clamping most
workpieces while
drilling.
Points may be lightly honed for
sharpness.
The vises provide the quickest and
most efficient set up method for
parallel work.
One of the most commonly used work-holding Available in many sizes.
devices is also called a drill press vise.
gooseneck
clamp
Gooseneck is a hold
down device used to
fasten a work piece to
a table.
The gooseneck clamp allows the top
of the clamping bolt to be positioned
below the surface to be machined.
The measuring surfaces are lapped and
polished to 200 milionths of an inch.
Available in many sizes.
Hermaphrodite caliper
hermaphrodite locates and scribes
caliper
lines in a work piece
parallel to its side.
Reversible for inside lines.
The hermaphrodite caliper can also be used
to lay out the center of round stock.
It consists of two legs, one sharp
point and the other leg is a hook.
Kant-Twist clamps weight
approximately half as much as
comparable C-clamps.
Kant-Twist
clamp
Kant-Twist clamp is a
heavy duty clamping
devices.
They are superior to standard Cclamps.
Clamping devices are used for safe handling
and ease of operation.
laying out
They eliminate distortion and twisting
action.
Laying out or lay-out is The information measured and transferred
Accurate workmanship depends upon
the operation of
must be accurate. An error in layout will result the ability to use the proper
transferring reference in an error in the finished part.
marks from a blueprint
to the work piece.
parallel clamp
A parallel clamp is a
low reach heavy duty
clamping device, also
known as machinist or
toolmakers' clamp.
instruments and gages for measuring
precisely.
Clamping devices are used for safe
handling and ease of operation.
Stronger and smaller than a C-clamp.
Toolmakers' parallel clamp
prick punch
scriber
step blocks
Prick punch is used
lightly mark the
location of holes.
Scriber is a sharp,
pointed tool used to
draw straight sharp
lines.
The prick punch has an included point angle
of 30 degree.
A scriber is used with a square rule or
straight-edge for drawing straight lines. This
is particularly important when laying out.
The pocket scriber can be reversed in
the handle for safety. Available with
carbide or hardened steel point.
Step blocks are extremely useful
clamping aids.
Step blocks help to
support the work
piece.
The height of the work piece determines the
correct step block on which a clamp can be
placed to secure the work piece.
T-bolt
The prick punch is the only punch
that should be used in layout. It is
used to preserve the location of a
layout mark while doing minimum
damage to the work piece.
They are used in conjuction with
gooseneck, "U" - clamps and strap
clamps.
T-bolts are used on milling machines
tables and faceplates.
Head has a T-shape
and is used to fasten
work to the table.
The heads of the T-bolts often fit the
slots on the drill press tables.
T-slot bolt
trammel
Trammel measures
between two points
and scribes circles or
arcs that are too large
for dividers.
Trammel points can be attached to a
bar and set to circle dimensions or
they may be clamped directly by rule
graduations.
Trammel
Transfer punch can be used with any
shape of hole-round rectangular,
square, elongated, or tear-shaped
materials up to 2 inches or 50 mm
thick.
Transfer punch used
to transfer holes of any
transfer punch
diameter from 1/16th
to 2 inches.
Transfer punch set
"U" - clamp
"U" shaped device for
holding down a work
piece.
One advantage of the "U" - clamp is
that it can be removed without taking
the nut off the T-bolt.
It has a continuous
slot.
Clamping devices are used for safe handling
and ease of operation.
V-blocks
V-blocks hold round
stock for layout work.
Round work pieces can be securely fastened
in a set of V-blocks.
To prevent the shaft from bending
under cutting pressure a V-block and
screw jack can be used to support
the shaft.