DIAMOND DRILL / DIAMOND DRILL BIT - TERMINOLOGY
- The exactness of a measurement
produced compared to the desired result.
national standard institute
(ANSI) - A US private, non-profit organization that administers and coordinates voluntary
standards and systems.
This organization is responsible for setting standards for various industries
This organization is responsible for setting standards for various industries and applications.
tool with flat bottom tip diamond. Used to grind away material center core.
ability of bond matrix to hold diamonds in place. Life of diamond drill is
usually increased with bond hardness
- The composition or material that holds diamond particles/diamond crystals
together in a diamond drill matrix. Bonds for diamond drills may be sintered
(metal), electroplated, or braised.
in time amount of time it takes for diamond drill to start producing
fast, consistent and chip free drilling performance.
- A rough edge remaining on material after it has been drilled
diamond mesh (grit) size
large diamond particles designed for fast drilling, produces coarser surface
- A substance, usually liquid, used to reduce or maintain the temperature of a
part being ground.
volume amount of coolant and pressure applied at drilling zone.
- The degree to which a given dimension resembles a perfectly round circle or
- A small particle of material that is removed during grinding, cutting, or
holding device to hold tool/drill in drilling machine. forms
a collar around the object to be held and exerts a strong clamping force on the
object when it is tightened via a tapered outer collar.
process in which material such as stone, glass, ceramic or other materials
is shaped into intricate shape, geometry, or form. Using various shape and
pointed diamond carving points.
is a cylindrical section of a naturally occurring medium consistent enough to
hold a layered structure. Core sample is obtained by drilling into material with
diamond core drill. Core is than extracted from diamond core drill tube and
analysis is done on martial structure.
- A hole that has been slightly widened from one end to a particular depth. A
counterbored hole typically provides space for a recessed bolt or screw head.
- The hardest known substance. Made from carbon, diamond is both a naturally
occurring and manufactured abrasive.
concentration amount of
diamond particles obtain in diamond drill bond matrix. Typical diamond
concentrations include low, medium, and high. Diamond concentration will
influence the drilling speed.
mesh size size of diamond
crystals in diamond drill matrix. Plays major role in determining surface finish
quality, drilling speed, chipping level, and material micro structure you will
obtain. Hence diamond size is selected depending on surface finish and drilling
seed you wish to obtain.
accuracy how close drill produces desired hole to point (location)
depth thickness of
material drilling through
- specialized three-jaw chuck, usually fits up to ½ (12.7mm) shank
diameter diamond drills.
depth maximum thickness
of material a specific diamond drill can drill through.
- The point at which a diamond
drill is no longer useful for drilling or stops working. Lack of coolant
reaching drilling zone, using in appropriate RPMs, drilling at an angle, or
having material core stuck inside the diamond core drill eventually lead to
diamond drill failure.
drill wear - The rate at
which the diamond cutting edge of a drill wears away during drilling.
indicator - A device that
measures the angles at the drill point to assure the drill point is symmetrical
and on center
Drill Life typically calculated in number of parts, holes, or cores a
diamond drill will drill through before its diamond section completely wears
depth (height) height of
diamond crown (diamond core drill section). Portion that contains either
embedded diamonds or diamond coating. Diamond drill will stop working when this
is worn away.
- diamond drill tip that contains diamond particles. This is the portion
of the drill bit that actually does the drilling
- The process of using a diamond drill to penetrate the surface of a workpiece
and make a round hole.
size of diamond particles (diamond crystal) inside diamond drill bond
- The distance from edge to edge of the widest point of a circle.
- A measurement of space, especially length, width and height.
zone - The area of contact
between the diamond drill and material being drill.
process of re-exposing (re-sharpening) diamond particles on surface and
inside diamond drill. This
process removes swarf, dull diamond particles, and bonding material from diamond
drill. Hence rexposes the next diamond layer to start working
accessory used to help start drilling, keeps diamond drill in place and prevents
it from wobbling. Frequently used when drilling horizontal surface.
press - A
drill press is composed of a base that supports a column, the column in turn
supports a table. Work can be supported on the table with a vise or hold down
clamps, or the table can be swiveled out of the way to allow tall work to be
supported directly on the base. Height of the table can be adjusted with a table
lift crank than locked in place with a table lock. The column also supports a
head containing a motor. The motor turns the spindle at a speed controlled by a
variable speed control dial. The spindle holds a drill chuck to hold the cutting
tools such as diamond drills. A drill press is preferable to a hand drill when
the location and orientation of the hole must be controlled accurately.
extends useable drilling depth of diamond drill. Extensions are available in
different lengths and diameters. Extension diameter must be same or smaller than
diameter of diamond drill being used.
diamond bond An
industrial diamond (superabrasive) bond accomplished by immersing a diamond
drill in an electrically charged chemical bath that contains metal particles.
Only one layer or few layers of diamond stay on surface of the diamond drill
tip. Nickel is the binder that actually keeps diamond in place
bottom drill also known
as non core formation diamond drill. Grinds
away core in material being drilled. Typically used when drilling only partially
rate - velocity
(speed) at which the diamond drill is forced against material being drilled.
Usually measured by how fast diamond drill tip can penetrate given material per
specific time unit (time frame). For example some diamond drills can drill
2.0 of material per minute. Where other type of diamond drills can only drill
.010 thickness of material per minute.
diamond mesh (grit) size
small diamond particles, produce smooth surface finish quality. Will drill
slower than medium size or coarse diamond particles.
- The breaking apart of diamond particles in diamond drill during drilling. It
is part of the wheel's self-sharpening process.
of dressing number of times required to drill into dressing stick to
sharpen and rexpose diamond particles inside diamond drill. This will depend on
material being drilled, RPMs used, and performance of the diamond drill
- The unwanted formation of a smooth surface on a diamond drill. Glazing occurs
when the heat from drilling process reacts with a diamond drill.
speed air spindle
operate using air pressure.
Use for drilling micro holes where high degree of precision and accuracy is
- The ability of a metal to
resist scratching and penetration. usually
measured the Moh's scale or Knoop.
wall diamond core drill
sintered (metal bond) diamond core drill typically with 2.0mm to 3.00mm crown
large number of diamond particles in diamond bond. To increase life of the tool.
unit of measurement used to describe maximum power output of drilling
diamond drill diamond
core drill made with focus on Inside diameter. In order to obtain specific core
diamond concentration fewer diamond
particles present in tool bond. Produces softer and freer cutting bond.
- A substance, often a liquid, used to reduce or prevent friction, resistance,
heat, and wear during grinding.
- A build up of swarf in a diamond drill diamond section that clogs the spaces
between diamond particles in diamond drill bond
Geometry shape and configuration of material being drilled. Can be flat
piece of material, tube, rod, or irregularly shaped material.
Density amount of mass contained by cubic volume
scale of hardness scale used to measure material hardness. Uses minerals
of various harnesses by applying harder
material to scratch a softer material. diamond is at the top of the scale. The
hardness of a material is measured against the scale by finding the hardest
material that the given material can scratch, and/or the softest material that
can scratch the given material.
density - The relative
compactness of a material. Density is the mass of a material per unit volume.
hardness - The ability of a
material to resist penetration, indentation, or scratching.
method of placing diamond drill into drilling machine. Typically made from
steel or brass with female or male thread on to water swivel adapter / drill
allows diamond drill to be mounted directly into drilling machine spindle.
Most frequently used with milling machines. Morse Tapers come in eight sizes
identified by number between 0 and 7. Such as morse taper # 1, # 2, # 3 (most
popular) for use with diamond drills.
- A measurement equal to one twenty-fifth of a thousandth of an inch (0.00004
- The use of a machine to remove material from the surface of a workpiece with a
rotating solid cylindrical tool.
diamond drill diamond
core drill manufactured specially to drill precision holes of a specific
Diameter) of the Diamond Drills/Bit is made larger (off center). OD (outside
diameter) is made smaller to accomplish this purpose.
drilling process. Typically used on cnc machines where predetermined amount of
pressure is used at consistent time intervals to achieve desired hole depth. The
user is able to control the depth of material the diamond drill drills through
at each pass (point of contact with material).
pressure per square inch. In
diamond drilling application this is typically referred to pressure of coolant
running through center of spindle.
Inside diameter of this
diamond drill is offset. It is still considered a diamond core drill because it
has a slot on side for coolant to pass through center of the diamond drill. This
type of diamond drill leaves no core behind (destroys core when drilling),
because its ID (inside diameter) is Offset.
part of the diamond drill that goes into drilling machine chuck or collet.
Most shank types used for diamond drills are a straight stem with or without
hole in center. Most frequently used shank diameters for diamond drills are Ό,
3/8, and ½.
most frequently found on precoussonary drilling equipment, such as hammer
drills. Fits into simple
spring-loaded chuck, so that diamond core bit can be chucked with a simple and
quick hand action. The diamond drill is not held solidly in the chuck, but can
slide back and forth like a piston.
diameter of straight stem to be placed into drilling machine chuck
length length of diamond
drill stem portion that goes into drilling machine.
hole diameter inside
hole diameter of stem
wall diamond core drill
sintered (metal bond) diamond core drills typically with 1.2mm to 2.0mm diamond
crown wall thickness
diamond core drill
- sintered (metal bond) diamond core drill with individual segments
braised or laser welded on to core drill tube steel body.
distance between diamond segments on surface of diamond core drill.
Feet per Minute (SFM)- unit
of velocity used in machining to identify the machinability ratings of a
- The gritty combination of chips, abrasive grains, and worn bonding material
that is produced during drilling.
adapter adapter with one
end with male thread and other end with cylindrical stem. This is used to allow
the operator to convert diamond drill with female or male thread to into
straight stem tool to place into drilling machine chuck.
technique in which diamond drill is fed into material into evenly timed up and
down cycles (movements). Drilling down for 30 seconds, than lifting diamond
drill up for 30 seconds, letting coolant penetrate deeper into material being
drilled and diamond drill cool in air.
finish quality amount of
chipping generated on face of material. Surface finish consists of three
components: form, waiveness, and roughness. There are many different ways to
measure surface finish quality.
- The rate at which the cutting edge
of the tool moves past the workpiece surface at the point of contact. For
turning, speed describes the rotation of the workpiece. For milling and
drilling, speed describes the rotation of the cutting tool.
Diamond Drill Design - Making slots
in diamond drill tip will usually make them drill faster and freer in hard
materials. Slots help reduce diamond drill heat generation, and better propel
coolant through the drilling zone. The width of slot depends on hardness of
material. Diamond Drills manufactured for drilling harder
materials require more slots than diamond drills made for softer materials.
Slots are recommended for thick wall diamond drills, helping increase drilling
speed and efficiency.
defined a maximum
allowable deviation from required size range on hole or core diameter produced
by diamond drill. Tolerance is usually specified for either diamond drill
outside or Inside diameter. If close tolerance is desired for hole diameter,
tolerance called out on OD of diamond drill for example: + / - .001, + / -
.005, and etc. same thing applied for diamond core drill inside diameter.
wall diamond core drill
-sintered (metal bond) diamond core drill typically with 0.5mm to 1mm
diamond crown wall thickness
- The dressing of a diamond drill in order to return the diamond drill to its
- The distance from the center to the edge of a circle.
workholding mechanical device with one fixed jaw and one movable jaw. Vices
for holding or clamping martial or object being drilled in place, in order to
prevent it from moving. There is a wide varity and types of vices available to accommodate
just about any material type, shape and geometry.
thickness thickness of
diamond core drill diamond section. Usually available from 0.5mm to 3mm
thickness. Proper diamond drill wall thickness selection is influenced by
material being drilled, drilling depth, drilling equipment being used, and
What you should know before you buy your next diamond drill?
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