Introduction to Gundrilling
Gundrilling makes it possible to produce close tolerance holes in
cast iron, carbon and alloy steel (including stainless steel), tool
steel, high temperature alloys, titanium, beryllium, copper, brass,
and aluminum, as well as graphite, wood and plastic. It offers size
location and straightness accuracy where critical tolerances are
important in on operation at low cost, often eliminating one or more
secondary operations, Gundrilling offers the capability of burr-free
holes and bottom forming of blind holes, as well as entry into
surfaces other than 90 degrees.
An important fact about gundrilling is that it is a highly
repeatable process. A rigid machine, a properly designed fixture and
a good quality drill will deliver consistent performance throughout
a production run. Once the conditions are established such as
spindle speed, feed rate, and coolant pressure, gundrilling becomes
a "push button" process independent of operator skill. The only
interruption in production should be for tool changing.
Gundrilling is now widely used for short batch job shop work as
well as high production setups. Applications range from the single
hole component to those with many hundreds of holes.
The main components in a gundrilling system are the drill,
gundrill sharpening fixture, gundrill guide bushing, Gizmo whip
guide, drilling machine, coolant supply and fixturing. Each one
plays a vital role in producing good results.
Our ambition with this web page is to share our knowledge on
these subjects plus other related topics of interest. What you see
today is just a start, but we think a good one. Please let us hear
from you with your comments and suggestions. Orders would be nice,
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