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F G H I
J K L M
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A
-
Actuator
- A
mechanical device capable of producing motion, i.e. Blackalloy's
Drill Unit has capability of both linear and rotary motion.
- Air
- Term
loosely used to represent compressed air sources for use
in manufacturing.
- Ambient
- The
temperature and atmospheric conditions in the process area.
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B
-
Blackalloy
- The
name associated with industrial cutting operations for more
than half a century, and with precision Drill Units for
over 20 years.
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-
Clean Room
- Applications
characterized by the common requirement to minimize outside
contamination. These type applications limit the use of
lubricants and coolants. Special materials and seal materials
are necessary to meet these requirements. Many medical and
pharmaceutical applications require clean room features.
- Collet
- A
tool holding device designed for maximum holding capacity
and high accuracy. Each tooling size requires a separate
collet.
- Compressed
Air
- Industrial
process air available for control and process uses at 30
to 150 PSI.
- Counterbore
- The
larger diameter at the entrance of a drilled hole with a
flat bottom. Similar to a countersink except for the bottom
configuration.
- Countersink
- The
larger diameter at the entrance of a machined hole with
a conical bottom. Similar to a counterbore except for the
bottom configuration. The general use of a countersink is
for use with flat head screws and bolts.
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- Deep-Hole Drilling
- Arbitrarily
set at a depth/hole diameter ratio of 8:1. The torque required
is generally more than shallow depth drilling and frequent
tool retraction may be necessary to keep the flutes open.
- DRAP
- A
combination drill and tap that performs both operations
in one sequence. It is useful for applications where the
drilling and tapping settings are similar. The operation
must be on a thru-hole part since the drilling must be
finished before the tapping operation begins. Call for more
information.
- Drill
Unit
- A
self-feeding drill module that is designed to automate multiple
hole production drilling and other rotary/linear applications.
- Double
Feed Control
- The
ability to control the feed rate for both the extension
and retraction portions of the drilling cycle.
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-
Extended Rear Spindle
- Additional
length added to a Drill Unit spindle to allow the input
of liquid or gaseous media thru the center of the spindle.
The additional length is usually required to connect a rotary
union to the spindle. The extended spindle can also be useful
in heavy duty applications to increase the life of the spline
bushing.
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- Feed
- The
linear extension towards the work of a Drill Unit quill.
- Feed
Control
- The
method to control the drill extension towards/into the work.
The simplest method is pneumatic control. Another method
is hydraulic feed control, which has a more accurate feed
rate because of the incompressibility of oil.
- Flow
Control
- A
precision adjustable valve used to control the flow of a
gaseous or liquid media.
- FPR
- Abbreviation
for Feed per Revolution, a term used in drilling applications
to determine how fast the drill will go thru the material
per revolution of the cutting tool. It is a major factor
in determining the horsepower requirements for an application.
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- Gun
Drilling
- See
Deep-Hole Drilling
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I
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J
- Jacobs
Taper
- A
standard shaft configuration that allows attachment of tool
holders with minimal runout.
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L
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M
-
Multiple Spindle Head
- A
Drill Unit attachment with multiple drill or tap spindles
where the spindles are gear driven from the Drill Unit spindle.
They allow drilling or tapping of multiple holes in closer
proximity than is possible with Drill Units alone.
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O
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P
-
PSI
- Pounds
per Square Inch, a measure of the energy stored in industrial
compressed air or any other energy force.
- Parabolic
Drill
- Drill
designed for deep-hole drilling with good chip evacuation.
- Peck
Drilling
- A
technique where the tool is frequently retracted from the
hole to clear drill chips and prevent clogging. It's also
used to help drill straight precision holes. Generally used
when the hole depth is considered to be a deep-hole.
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-
Quill
- The
linear guided non-rotating portion of a Drill Unit. It's
purpose is to securely support the rotating spindle.
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- Rotary
Union
- A
mechanical device that allows the transfer of a medium (air,
water, coolant, etc.) from a stationary source to a rotating
component.
- Runout
- The
deviation from the desired surface or line in relation to
the axis during one complete revolution.
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- Self-Contained
- A
Drill Unit that includes the ability to turn and extend
in a compact package.
- Self-Feeding
- The
capability to automatically extend a drilling device towards
the work. The ability to automate a drilling process.
- Skip
Feed Control
- A
control valve option available with Models 151/251 Drill
Units that allows multiple uncontrolled and controlled sections
of the feed cycle. The valve essentially 'skips' the feed
control at desired portions of the feed cycle.
- Spindle
- The
high precision shaft that rotates within the quill and is
the attachment point for the tooling.
- Spline
Bushing
- The
part of a Drill Unit that transfers power from the input
shaft to the spindle.
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- Thru-holes
- The
hole drilled thru the spindle center to facilitate the introduction
of coolant and other media to the work area. It is also
useful for the introduction of a work or slug ejector pin.
- Thrust
- When
used as a drilling parameter it is the exertion forces of
a tool into the work transmitted by the Drill Unit.
- TIR
- Total
Indicator Reading is the total movement of a dial indicator
for the deviation of a surface from it's theoretical perfect
dimension. In drilling, it is an indication of the deviation
of the cutting tool's centerline axis from it's theoretical
true centerline.
- Trilobe
- Trilobe
is a superior polygon profile designed to eliminate the
common failures associated with splines and keyed shaft
attachment methods. It is used for mechanical connections
that are stronger, more precise and have a substantially
longer service life than other common methods. The trilobe
profile is self centering, a property important in maintaining
minimum spindle runout.
- Two-Hand
Anti-Tie-Down
- A
safety arrangement suited for machinery where position of
an operator's hands must be monitored. Operator must actuate
both push buttons simultaneously to obtain an output
signal.
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V
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W
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X
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Y
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Z
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