Calculated Industries MACHINIST CALC PRO User manual

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MACHINIST CALC™ PRO
The Machinist Calc™ Pro Advanced Machining Math and
Reference Tool (Model 4089) provides fast, precise solutions for
your every day machining calculations. With the Machinist Calc Pro
you will spend less time looking up your most-needed calculations
on charts, in books or on the Internet and more time machining.
The Machinist Calc Pro gives you hundreds of machining-specific
calculations, including:
• Cutting Speed, Spindle Speed (RPM)
• Feed Rate, Cutting Feed, Feed per Tooth (Chip Load)
• Built-in Drill and Thread Size reference tables
• Drill Point Cut Depth solutions
• Wire Sizes and 3-Wire Measurements
• Bolt Pattern hole layouts with center x, y coordinate
• Right triangle math
• Trigonometric solutions
• Work in and convert between U.S. and Metric units, including:
• m, mm, cm
• Decimal Inches/Mils
• Feet-Inch-Fractions
• Area, Volume and Weight
Note: The Machinist Calc Pro calculator Model 4089 and User’s Guide are
designed for machinists who work with metric drill, screw and thread sizes
and metric thread tolerance classes. The calculator can be used for non-metric
applications, so some examples for working in U.S. units – numeric, letter,
and inch drill sizes and numeric and fractional thread sizes and classes –
are included in the Appendix of this User’s Guide.
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Us e r 'sGU i d e — 1
TABLE OF CONTENTS
GETTING STARTED ............................................................................................. 4
KEY DEFINITIONS ............................................................................................ 4
Basic Function Keys........................................................................................ 4
Dimensional Function Keys............................................................................. 5
Weight and Volume Function Keys ................................................................. 6
Trigonometric Function Keys .......................................................................... 6
Miscellaneous Functions ................................................................................. 7
Machinist Function Keys ................................................................................. 8
PREFERENCE SETTINGS ............................................................................. 12
ENTERING DIMENSIONS .............................................................................. 13
Linear Dimensions......................................................................................... 13
Square and Cubic Dimensions...................................................................... 13
CONVERSIONS............................................................................................... 14
Linear Conversions........................................................................................ 14
Square and Cubic Conversions.................................................................... 14
Weight Conversions ...................................................................................... 14
Weight per Volume and Volume Conversions .............................................. 15
BASIC MATH OPERATIONS........................................................................... 15
Adding and Subtracting Dimensions............................................................. 15
Multiplying Dimensions.................................................................................. 16
Dividing Dimensions...................................................................................... 16
Calculating Percentages ............................................................................... 16
MEMORY OPERATION................................................................................... 17
Using M+ ....................................................................................................... 17
Using Memory Storage Keys (M1 – M9)....................................................... 18
PAPERLESS TAPE OPERATION.................................................................... 18
USING THE MACHINIST CALC PRO................................................................ 20
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2 — Ma c h i n i s t ca l c ™Pr o
RPM (SPINDLE SPEED)................................................................................. 20
RPM – Milling ................................................................................................ 21
RPM – Turning............................................................................................... 22
RPM – Drilling................................................................................................ 22
FEED RATE ..................................................................................................... 23
Feed Rate – Based on Cutting Feed and RPM (for Turning)........................ 23
Feed Rate – Based on Cutting Feed and RPM (for Drilling)......................... 23
Feed Rate – Based on Feed per Tooth, RPM and # of Teeth....................... 24
CUTTING SPEED............................................................................................ 25
Cutting Speed – Milling ................................................................................. 25
Cutting Speed – Turning................................................................................ 26
Cutting Speed – Drilling................................................................................. 26
FEED PER TOOTH (CHIP LOAD) .................................................................. 27
Feed per Tooth – Based on Cutting Feed and # of Teeth ............................ 27
Feed per Tooth – Based on Feed Rate, RPM and # of Teeth ...................... 27
RADIAL CHIP THINNING ................................................................................ 28
Radial Chip Thinning –
Based on Feed per Tooth, Tool Diameter and Cut Depth ............................ 28
CUTTING FEED............................................................................................... 29
Cutting Feed – Based on Feed per Tooth and # of Teeth............................. 29
Cutting Feed – Based on Feed Rate and RPM ........................................... 30
DRILL SIZES .................................................................................................... 30
DRILL POINT ................................................................................................... 31
THREAD SIZING ............................................................................................. 32
Internal Thread .............................................................................................. 32
External Thread ............................................................................................. 33
Thread Classification..................................................................................... 33
Changing a Thread Classification ................................................................. 33
Thread Size ................................................................................................... 34
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Us e r 'sGU i d e — 3
Custom Thread Percentage .......................................................................... 35
WIRE SIZES AND 3-WIRE MEASUREMENTS .............................................. 36
Wire Size ....................................................................................................... 36
3-Wire Measurement – Known Thread Size and Wire Size ......................... 37
Pitch Diameter – Known 3-Wire Measurement and Wire Size..................... 38
BOLT PATTERN ............................................................................................... 39
Bolt Pattern.................................................................................................... 40
RIGHT TRIANGLE FUNCTIONS..................................................................... 41
Right Triangle – Based on Adjacent and Opposite Legs .............................. 41
Right Triangle – Based on Hypotenuse and Angle ....................................... 42
CIRCLE CALCULATIONS ............................................................................... 42
Circumference and Area – Based on Diameter ............................................ 42
Circumference and Area – Based on Radius................................................ 43
BASIC D:M:S AND TRIGONOMETRY EXAMPLES ....................................... 43
Converting Degrees:Minutes:Seconds ......................................................... 43
Time Calculations Using D:M:S..................................................................... 44
Trigonometric Functions ................................................................................ 44
APPENDIX A – U.S. MODE EXAMPLES.......................................................... 45
APPENDIX B – DEFAULT SETTINGS............................................................... 52
APPENDIX C – PREFERENCE SETTINGS................................................... 53
APPENDIX D – CARE INSTRUCTIONS ........................................................ 56
APPENDIX E – ACCURACY/ERRORS, AUTO SHUT-OFF,
BATTERIES, RESET ...................................................................................... 56
ACCURACY/ERRORS ................................................................................ 56
AUTO SHUT-OFF ........................................................................................ 57
BATTERIES ................................................................................................. 57
Battery Replacement Instructions ............................................................. 57
RESET ......................................................................................................... 57
REPAIR AND RETURN................................................................................... 58
WARRANTY.................................................................................................... 59
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4 — Ma c h i n i s t ca l c ™Pr o
GETTING STARTED
KEY DEFINITIONS
Basic Function Keys
O
On/Clear Key — Turns on power. Pressing once clears
the last entry and the display. Pressing twice clears all
non-permanent values.
o
Off — Turns all power off. Clears all
non-permanent values.
+-*
,=
Arithmetic operation keys.
0-9
and.
Keys used for entering numbers.
g
Convert — Used with the dimensional keys to convert
between units or with other keys to access special functions.
S
Store — Used for storing values.
S
1-9
Storage Registers M1 through M9 — Used to store
values in Memory registers 1 through 9.
r
Recall — Used with other keys to recall stored values
and settings.
gr
Memory Clear (M-R/C) — Clears Accumulative Memory
without changing current display.
rr
Memory Clear — Clears Accumulative Memory and
displays total.
M
Accumulative Memory — Adds displayed value to
Accumulative Memory.
gM
M- — Subtracts displayed value from
Accumulative Memory.
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Us e r 'sGU i d e — 5
Dimensional Function Keys
mMillimeters — Identies entry as millimeters, with
repeated presses toggling between linear, area and
volume units. Converts dimensional value to units of
millimeters, with repeated presses toggling between
millimeters and meters.
g5 Centimeters (cm) — Identies entry as centimeters,
with repeated presses toggling between linear, area
and volume units.
g9 Meters (m) — Identies entry as meters, with
repeated presses toggling between linear, area and
volume units.
g7 Feet — Identies entry as Feet, with repeated
presses of
g 7 toggling between linear, area and
volume units. Also used with iand /for entering
Feet-Inch values. Repeated presses of g 7 during
conversions toggle between fractional Feet-Inch and
decimal Feet.
iInch — Identies entry as Inches, with repeated
presses toggling between linear, area and volume
units. Entry can be whole or decimal numbers. Also
used with
/ for entering fractional Inch values (e.g.,
9i1/2). Repeated presses during conversions
toggle between fractional and decimal Inches.
/Fraction Bar — Used to enter fractions. Fractions
can be entered as proper (1/2, 1/8, 1/16) or improper
(3/2, 9/8). If the denominator (bottom) is not
entered, the calculator’s fractional accuracy setting
is automatically used. Results are always shown in
typical dimensional fractional format.
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(cont’d)
B1/1000" (mils) — Multiplies a dimensionless entry
by 0.001 Inch and displays the result as Inches.
Converts a linear entry to decimal Inches. For both
methods, the result is rounded and displayed to three
decimal places
Weight and Volume Function Keys
g6 Tons — Enters or converts a weight or volume value
to tons.
g4 Pounds (lbs) — Enters or converts a weight or
volume value to pounds.
g3 Tonnes (tonne) — Enters or converts a weight or
volume value to tonnes.
g2 Grams — Enters or converts a weight or volume
value to grams.
g1 Kilograms (kg) — Enters or converts a weight or
volume value to kilograms.
g0 Weight per Volume (wt/vol) — Stores a new weight
per volume as pounds per cubic foot or other format
as shown below. Default value is 490 pounds per
cubic foot of steel.
● Pounds per cubic foot
● Pounds per cubic inch
● Tonnes per cubic meter
● Kilograms per cubic meter
Trigonometric Function Keys
g# Sine (Sin) — Calculates the Sine of an entered
degree or unitless value.
ga Arcsine (Sin-1)—Calculates the angle for the
entered or calculated Sine value.
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Us e r 'sGU i d e — 7
gF Cosine (Cos) — Calculates the Cosine of an
entered degree or unitless value.
gp Arccosine (Cos-1)—Calculates the angle for the
entered or calculated Cosine value.
gc Tangent (Tan) — Calculates the Tangent of an
entered degree or unitless value.
gh Arctangent (Tan-1)—Calculates the angle for the
entered or calculated Tangent value.
Miscellaneous Functions
g.
Degrees:Minutes:Seconds (dms◄►deg) —
Converts between D:M:S and decimal degree
formats; repeated presses will toggle between the
two formats.
%Percentage — Used to nd a given percent
of a number.
g% x2— Squares the value on the display.
ABackspace Function — Used to delete entries one
keystroke at a time (unlike the O function, which
deletes the entire entry).
gA Square Root (!)—Calculates the Square Root of
the number on the display.
g, Reciprocal (1/x)—Finds the Reciprocal of a
number (e.g., 8g,= 0.125).
g* Clear All —Returns all stored values to the default
settings. Does not affect Preference Settings.
g- Change Sign (+/–) — Toggle displayed value
between negative and positive value.
g+ Pi — Displays value of π(3.1415927).
(cont’d)
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8 — Ma c h i n i s t ca l c ™Pr o
(cont’d)
g= Paperless Tape (Tape) — Accesses the Paperless
Tape mode (see Paperless Tape section), which
keeps track of your past 30 entries. Useful for
checking strings of numbers.
gS Preference Settings (Prefs) —Accesses various
customizable settings, such as dimensional answer
formats (see Preference Settings section).
Machinist Function Keys
CCutting Speed — Enters or calculates Cutting
Speed. Unitless entries assumed meters per minute
in Metric mode; feet per minute in U.S. mode.
Calculates Cutting Speed given entered Diameter
and RPM (Spindle Speed). Result is displayed as a
whole number.
gC Radial Chip Thinning (RCT) — Enters a Cut Depth
and calculates a Radial Chip Thinning factor to
increase the Feed Rate given Feed Per Tooth, Tool
Diameter and a Cut Depth that is less than one-
half the Tool Diameter. Unitless entries assumed
millimeters in Metric mode; Inches in U.S. mode.
RRevolutions per Minute — Enters or calculates
RPM (Spindle Speed). Calculates RPM given entered
Diameter and Cutting Speed. Result is displayed as a
whole number.
gR 3-Wire Measurement (3-W Measure) — Enters
or calculates a Three-Wire Measurement. Unitless
entries assumed millimeters in Metric mode;
Inches in U.S. mode. Calculates the minimum and
maximum Three-Wire Measurements and Pitch
Diameters given entered Thread Size and Wire Size,
assuming an External thread type. If a Three-Wire
Measurement value is entered, the Pitch Diameter
calculation is based on this entered measurement.
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