Drill Presses & Chucks
Last updated on
Monday, November 25, 2019 06:05:52 AM
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Mill Drill,
Floor Drill Press,
Drill Chucks,
Z-axis DRO,
Indicating 1,
Table Work Stop,
Table Clamp
Toe-clamp Set,
Super Chuck,
Bench Drill Press,
Indicating 2,
Fence,
Machine Work Light
Micro Chucks,
Miniature Drill Press,
Dremel Drill Press,
Hand Drill,
Micro Push
Drill,
Mortising Attachment
Drilling a hole through metal is one of the most basic machining tasks.
However, there are many interacting
variables associated with successful execution thus
requiring careful consideration of: the
material to be drilled,
setup rigidity, bit design, bit material, sharpness, length, RPM, feed rate, chip removal,
heat, &
lubrication.
Drill bits,
Reamers & Counter Bores
How to drill a hole Guide for Cutting Speeds
& Feeds for Drills
Machinist Calculator
Tables
Metric & Inch Equivalents
Inch
to Millimeter Conversion Table
Millimeter to Inch Conversion Table
Decimal
Equivalents of 8ths, 16ths, 32nds,
64ths
Decimal
Equivalents of Letter Size Drills
Decimal
Equivalents of Number Size Drills
American
Standard Pipe Thread & Tap Drill
Sizes
Tap Drill Sizes For Fractional Size
Threads
Millimeter
Tap Drill Sizes
National /Unified Coarse/Fine Thread
Dimensions & Tap Drill Sizes
CAUTION:
Always clamp
the piece to the table before drilling. Do not hold by hand. Standard drills will grab
soft metals like brass, lift the
work piece, even with a
small vise, & dangerously spin them at high speed.
Clamp or
bolt down the part.
Assure that the drill press head & table are locked onto the column, too.
Using a mill with a clamped part & fine down feed is a safer method to drill soft metals.
Wear Eye Protection
Rong Fu RF-25
Mill Drill
The DRO-equipped Rong Fu RF-25 mill is also an excellent drill press.
It is massive, rigid, precise,
powerful,
has a 110 to 2600 RPM speed range, &
is equipped with a large (75-lbs.), strong,
high-clamping pressure
milling vise.
A wide variety of precision work-holding fixtures are available.
R-8 Accessories
Mill Accessories
Drill Bits
An R-8 mounted Super Chuck (1/8" ~
5/8"
or 3mm ~ 16mm),
turning at a high speed, on the RF-25 Mill.
Two parts are secured in the mill's vise with small clamps.
Short, stiff,
stub drill bits used.
An aluminum holder for spare imperial & metric hex wrenches.
The 1/4" top plate helps guide the keys to the bottom plate.
Both plate holes have heavy champers.
The feet have felt pads. I could have 1/4-24
tapped the top plate.
Floor Drill Press
Sixteen speed, 16.5" swing,
floor-standing
Jet
drill press.
The low, 200 RPM speed is good for drilling
larger holes. Its
uses
a
removable MT2 (Morse taper) to
JT3 chuck arbor. This type of arbor arrangement
allows mounting
the
Jacobs ball bearing, 0" ~
1/2" (0mm
~ 13mm),
Super Chuck.
The low-cost chuck arbors
come in a large number of
size combinations allowing adaptation
of almost any chuck
to a given spindle.
An
adjustable work-stop peg fits into a table slot. Refer to the
Jet JDP-17 drill press manual.
16 speeds: 200, 290, 350, 430, 500, 580, 640, 720, 800, 870,
1440, 1630, 1820, 2380, 2540, & 3630 RPM.
A
1/64" to 3/4"
capacity keyed drill chuck with a JT3-MT2 arbor.
This large chuck is 2.95" in
diameter (Taiwan) & can hold large-shank reamers.
The arbor eject access slot in the floor drill press is
exposed by extending the spindle & rotating the chuck.
Arbor ejection wedge.
Drill Chucks
Thirteen drill chucks of various sizes & arbors in a wooden holder.
I have no rusting issues using wooden stands. See additional information on
Drill
Chucks.
Never use a taper-mounted chuck without a drawbar if side forces are being
applied.
Side forces can cause a taper-mounted chuck to loosen & spin-off at
dangerously high speeds causing injury.
Click on linked thumbnails
Drill Press Z-axis DRO
Installed a scale onto the large
floor drill press spindle while retaining the Jet's depth stop gauge.
Two-inches of the eight-inch scale were hack-sawed off & the end diamond ground with radii
corners.
The top end free floats like the
RF-25 mill Z-axis
modification & will retract via the spring.
Eight-inch scale supplied with adjustable surface-mounting brackets.
The original aluminum depth stop was not square so it
needed to be milled first.
Sometimes cast parts have angled sides so they can be easily popped-out of their
molds.
A 1/4" plate bracket was made. The M3-0.5 mounting screws are located
in-between the OEM mounting
bolts.
M3-0.5 screws hold the scale's transducer to the stationary
bracket.
Now that the mechanical stop
is milled square, the stop nut makes even contact thus making the stop more
robust with increased repeatability. Note the washer in-between the two stop nuts
helps adjustment & locking.
The washer works well enough that I placed one in-between the adjustment nuts of
the bench drill press, too.
The Jet also has a third nut that can hold the spindle
extended to a set depth. It too now has even contact.
This bracket attaches
through a W-sized hole to the Jet's 3/8-16 depth gauge bolt & spindle bracket.
The scale's original clamp & screws were retained to capture the scale's end.
If the M3-0.5 screws are too long they will touch & interfere
with the slide's movement.
Spindle fully extended 4.4" (111mm) travel. Displays imperial or metric units &
zeroes at any location.
The
bottom edge of the transducer aligns with the zero thus functionalizing the
mechanical inch & metric scales.
Click on linked thumbnails
Indicating 1
Aligning the drill press table.
Alignment animation;
sweeping the table.
Table Work Stop
Adjustable aluminum table stop to keep the part from turning.
Place the part or vise against it before drilling.
Exploded view showing the stop's construction.
Table Clamp
Vise-Grip adjustable table clamp. The clamp foot has a removable rubber boot.
Exploded view of the steel T-adapters & hardened washers that
hold the clamp base securely in the table slot.
The T-adapters keeps the slots from being worn & gouged by the smaller base under
heavy clamping pressures.
Select 3", 4", 5" & 6" jaw widths.
Jorgensen No. 1623 drill press table hold-down surface clamp (USA).
Specifications: 3" opening capacity, 1-3/4" throat depth,
9/16" Acme screw, 2000-lbs. normal load limit, cast iron.
The cotter pin allows quick installation
Well made product & easy to use.
A useful accessory for the drill press that increases safety & precision.
The original table height adjustment (plastic) handle cracked
so a longer aluminum one was fabricated.
Toe-clamp Set
The
slots
for both the bench &
floor drill presses
require
5/8" T-Nuts using
1/2"
studs.
Super Chuck
The imported
chucks supplied with most tradesman drill presses can have a relatively
high total indicated
readout (TIR) & marginal gripping power. Upgraded
both drill presses with
Jacobs chucks (USA).
The Jacobs
Super Chuck is of
superior quality having low TIR & the ball bearing design
affords very high gripping power.
Bench Drill Press
10-inch bench drill press with a upgraded Jacobs chuck. Drill press exploded diagram.
The magnetic-based work light was replaced with a fixed-base model.
Five speeds: 540, 880, 1600, 2610, & 3600 RPM.
A heavy duty Jacobs taper JT33 0" ~ 1/2" (0mm ~ 13mm), keyed chuck on the bench drill press.
The extra large jaws & key, coupled with high quality, totally eliminated any drill bit slippage.
A washer in-between the two stop nuts help adjustment & locking. Copied from the Jet floor drill press design.Indicating 2
Indicating the small drill press table.
Alignment animation.
Adjustable brass table stop to keep the part or vise from turning.Fence
Adjustable drill-press fence; a supplied accessory.Machine Work Light
An upgraded task/machine work light (USA) for the bench drill-press setup.
It uses up to a 100W (maximum) halogen or incandescent lamp.
Machinists call it "autographing" when one drills or cuts the machine instead of the part.
Double-walled shade with a finned aluminum heat sink keep it cool to the touch & extends switch life.
The lamp's head can be directed more effectively than the previous light.
The lamp is used for both the drill press & bench top illumination.
The original base bolts were 1/4-20 which were also used to bolt the base to the drill-press head.
The hollow head is only 3/16" thick cast iron so strong, 75% threads were easily tapped.
Now the lamp is very secure when moving the head & there is no magnet to attract metal swarf.
Micro Chucks
The picture shows a ViseGrip drill press hold down clamp. A Royal micro-sensitive feed attachment with a
Jacobs JT0 keyed chuck (0" ~ 5/32") for small hole drilling. Its straight shank is 1/2" in diameter;
overall drill travel is 3/4". Use the highest RPM. Hold the aluminum ring between your fingers. It is mounted
in a ball bearing to decouple it from the rotating shaft. Apply light downward pressure. It has far less drilling
pressure than the drill press rack & pinion. An internal coil spring automatically retracts the chuck.
Jacobs keyed chuck (USA), 0 to 1/4" (0 to 6.5mm) with a JT2 - 3/8"-24 threaded arbor.
Jacobs keyed chuck (USA), 0 to 5/32" (0 to 4mm) with a Royal JT0 - 1/2" micro-sensitive feed attachment.
Albrecht precision keyless chuck (Germany), 0 to 1/8" (0 to 3mm) with a JT0 - 1/2" arbor.
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Albrecht precision keyless chuck (Germany), 0 to 0.06" (0 to 1.5mm) with a JT0 - 3/8" arbor.
Miniature Drill Press
Variable-speed miniature drill press (China). The head is cast aluminum but the base
is ground cast iron.
The column is solid 1.181-inches (30 mm) diameter
chrome-plated steel.
Miniature drill press manual.
VARIABLE-SPEED MINIATURE DRILL PRESS SPECIFICATIONS | |
FEATURE | QUALITY |
Maximum spindle travel | 1-9/16-inches (40mm) |
Chuck to base distance | 8-inches (203mm) |
Swing distance | 6-1/2-inches (165mm) |
Column diameter | 1.181-inches (30mm) |
Chuck capacity | 1/64" ~ 1/4-inch (0.4mm ~ 6.4mm) |
Drive system | 2-step pulley with 150W variable speed DC motor |
Variable spindle speeds (PWM) | 0 to 3600 RPM & 0 to 5000 RPM. JT1 taper (male) |
Base size | 6-1/2-inches x 10-13/16-inches (165 x 275mm) |
Headstock & base construction | Machined cast aluminum & cast iron |
Digital depth gauge (auto ON/OFF) | inches or mm |
Height | 16-inches (406mm) |
Weight | 27-lbs. (12-1/4-kgs) |
The base has two T-slots.
The steel spindle has an auto-ON/OFF digital depth gauge
with 0.0005" (0.01 mm) resolution.
It retains selected units (inches or mm) but resets to zero after an auto
OFF/ON cycle.
When the spindle is extended, the digital gauge slide is
exposed.
The JT1 keyed
chuck has a 1/64" through 1/4" capacity. The spindle runs on
multiple, sealed bearings.
There is an adjustable depth stop. The original set screw
was replaced with a metal adjustment knob.
The DC motor's speed ranges are adjustable via a
pulse-width modulation (PWM) circuit.
Under the cover is a two-step pulley for intermediate
(3600 RPM max) & high speed (5000 RPM max) ranges.
The drill press required several hours
break-in period to achieve its maximum RPM (about 5300 RPM).
RPM varies with belt tension; the higher the tension the lower the RPM. The
round belt eases pulley changes.
Replaced the two, OEM cover-retaining bolts, with knobbed M5-0.8 x 50mm
bolts affording tool-less removal.
The bolt for the adjustable column
locking ring was replaced with a ratchet lever for tool-less adjustments.
A small, X-Y table accessory (Japan) shown mounted. The
knob scales (0.001" resolution) can be zeroed.
Detail of the settable X-axis scale. The index mark is too
thick (even though it's a V-groove).
Attach the table to the base with the supplied M5-0.8 T-nuts then
lubricate/check/adjust the both X & Y gibs.
Hold a square to the two bases first for a quick initial alignment.
Align the X-axis using standard
technique.
The dial test gauge is indicating off the
inner top back edge of the T-slot.
1" precision vise with integrated parallels, attached to the
table using fitted L-brackets. The hardened
vise has six (4 side & 2 bottom) M5-0.8 tapped holes.
Indicate the solid jaw using standard
technique.
An example of four, 7/64" diameter drilled holes having 0.25" depth & 0.200"
center-to-center distances.
The two bench drill presses shown for size comparisons.
Click on linked thumbnails
Dremel Drill Press
Dremel Moto-tool (395 Type 3) mounted into its aluminum &
plastic drill press
fixture. Not sturdy or precise.
Dremel
Moto-tool Model 395 Type 3 Manual
A set screw was added to the back of the plastic depth gauge
guide to remove
most of the rotational slack.
A collet with chuck being used to hold a micro-saw blade on a 1/8" shaft.
Three-jaw chuck. Note the shaft lock for tightening/loosening.
A collar removes to screw-on various accessories.
The right-angle head can be set & locked at different positions.
Note the hole near the chuck; a 1/8" shaft (any bit) is inserted to lock the shaft
for tightening/loosening.
A router attachment.
A flex-shaft accessory. The Dremel has a rear hook to suspend it.
There is a hole near the collet chuck; a 1/8" shaft (any bit) is inserted to lock
the shaft for tightening/loosening.
Buffers, cutters, grinders, brushes, drills, burrs, cut-off wheels, micro-saw
blades, sanders.
Hand Drill
Stanley (England) No. 03-803 hand drill.
Drill shown with its accessory handle, attached.
Micro
Push Drill
Brass jeweler's 3-1/2"
long push drill (India) for 0.2-1mm micro-drill bits. Free-spinning fingertip
end (right).
Mortising Attachment
Jet Mortising Attachment (JMA-581 manual), installed. Only shown for illustrative purposes.
Mill Drill,
Floor Drill Press,
Drill Chucks,
Z-axis DRO,
Indicating 1,
Table Work Stop,
Table Clamp
Toe-clamp Set,
Super Chuck,
Bench Drill Press,
Indicating 2,
Fence,
Machine Work Light
Micro Chucks,
Miniature Drill Press,
Dremel Drill Press,
Hand Drill,
Micro Push
Drill,
Mortising Attachment