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M

aCHInIsT 

C

alC

™ 

P

Ro

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.

UG4089E-A-inside.indd   61

6/9/2011   3:16:19 PM

Summary of Contents for 4089

Page 1: ...UG4089E A cover indd 1 6 9 2011 2 02 07 PM...

Page 2: ...oint 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...

Page 3: ...ensions 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 1...

Page 4: ...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 To...

Page 5: ...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...

Page 6: ...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...

Page 7: ...rea and volume units Also used with i and for entering Feet Inch values Repeated presses of g7 during conversions toggle between fractional Feet Inch and decimal Feet i Inch Identifies entry as Inches...

Page 8: ...t 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...

Page 9: ...ted presses will toggle between the two formats Percentage Used to find a given percent of a number g x2 Squares the value on the display A Backspace Function Used to delete entries one keystroke at a...

Page 10: ...culates 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...

Page 11: ...Number of Bolt Holes Starting Angle optional and Center x and y coordinates optional gb Thread Classification Thread Class Used to select the Tolerance Class for metric Threads and the Thread Class f...

Page 12: ...th Number of Teeth Enters the Number of Teeth on a tool Default value is 1 F Feed per Tooth Enters or calculates Feed per Tooth Chip Load Unitless entries assumed millimeters in Metric mode Inches in...

Page 13: ...right triangle Calculates Adjacent value given two other right triangle values Also enters the Center x coordinate of a Bolt Pattern p Opposite Enters or calculates the Opposite vertical leg or height...

Page 14: ...gs to the default values see Appendix for more information KEYSTROKE DISPLAY gSS Prefs Functional Result Rounding F RND 0 0000 F RND 0 000 F RND FLOAT repeats options F RND 0 0000 Third press of S Def...

Page 15: ...ear dimensions are entered press O after each entry DIMENSIONS KEYSTROKE 201 meters 201g9 95 millimeters 95m 23 mils 23B 4 5 Inches 4 5i 1 320 Feet 1320g7 Square and Cubic Dimensions Examples of how s...

Page 16: ...d Cubic Conversions Convert 0 05 cubic meters to other dimensions KEYSTROKE DISPLAY OO 0 05g999 m 0 05 CU M gm 50000000 CU MM g5 cm 50000 CU CM gi 3051 1872 CU INCH g7 Feet 1 7657333 CU FEET Weight Co...

Page 17: ...s tonnes pounds and tons g1 kg 44 88 KG g3 tonne 0 04488 MTON g4 lbs 98 943463 LBS g6 tons 0 0494717 TON 4 Change the weight per volume back to the default value 490S00 wt vol 490 LBS CU FEET The numb...

Page 18: ...ensions Divide 8 75 mm by 4 KEYSTROKE DISPLAY 8 75m 4 2 1875 MM Calculating Percentages The key can be used for finding a given percent of a number or for working add on discount or division percentag...

Page 19: ...l total in Memory rM Display Clear Memory rr Clear Memory gr Memory is semi permanent clearing only when you do one of the following turn off the calculator press rr press gr press g Clear All When Me...

Page 20: ...n replace a value in one of these Memory registers by storing a new value in place of the stored value FUNCTION KEYSTROKE Store single value in M1 S1 Clear M1 0S1 Recall M1 r1 Store 175 into M1 recall...

Page 21: ...on the display When exiting the last entry or TTL will be displayed allowing you to continue using the last tape value for another operation if desired Note The Paperless Tape is cleared when you do o...

Page 22: ...st functions without having stored the minimum required values the calculation will not be performed Instead the currently stored value for the selected function will be displayed See Key Definitions...

Page 23: ...STROKE DISPLAY OO 0 1 Enter the bit Diameter 9 3d DIA 9 3 MM 2 Enter the Cutting Speed 90C CUT 90 M MIN 3 Calculate the Spindle Speed RPM R RPM 3080 R CUT 90 M MIN R DIA 9 3 MM rR RPM 3080 4183 The ca...

Page 24: ...of R will toggle through the inputs and outputs starting with the entered Cutting Speed RPM Drilling Calculate what the RPM Spindle Speed should be set to when drilling into material with a recommende...

Page 25: ...you are turning a 25 mm steel round stock down with a Cutting Feed of 0 80 millimeters per revolution mm rev and a rotational speed of 900 RPM Spindle Speed KEYSTROKE DISPLAY OO 0 1 Enter the Cutting...

Page 26: ...RPM Spindle Speed Feed Rate Based on Feed per Tooth RPM and of Teeth Calculate the Feed Rate for a four fluted end mill using a Feed per Tooth Chip Load of 0 125 millimeters turning at 1 000 RPM Spind...

Page 27: ...f the cutting tool during a cut typically measured in surface meters per minute You can calculate Cutting Speed by entering the Diameter of the tool or material you re using and the RPM Spindle Speed...

Page 28: ...Enter the Diameter of the rod 100d DIA 100 MM 2 Enter the RPM 300R RPM 300 3 Calculate the Cutting Speed C CUT 94 M MIN Repeated presses of C will toggle through the inputs and outputs starting with t...

Page 29: ...ated given values for Number of Teeth Feed Rate and RPM Spindle Speed Feed per Tooth Based on Cutting Feed and of Teeth Calculate Feed per Tooth Chip Load with a Cutting Feed of 0 60 millimeters for 4...

Page 30: ...ing operation when the depth of a cut is less than half the diameter of the tool you can use the Radial Chip Thinning to determine a new faster and more efficient Chipload or Feed Tooth value Radial C...

Page 31: ...You can calculate Cutting Feed given values for Feed per Tooth Chip Load and Number of Teeth If these values are unknown you can calculate Cutting Feed with Feed Rate and RPM Spindle Speed Cutting Fee...

Page 32: ...ction of a desired metric Drill Size which can be entered as a millimeter value maximum of 78 mm If the entered value doesn t match a Drill Size the next smaller size is displayed To set the displayed...

Page 33: ...le of 118 If a different Angle is desired it can be stored using the Drill Point function for example 120gD stores 120 Find the Drill Point Cut Depth for a 12 5 millimeter drill with a 118 Cutting Ang...

Page 34: ...value pressing t after entering it in order to store the Thread Size Note Entries outside of the ranges mentioned above will result in an Entry Error The following tables list the available Thread cha...

Page 35: ...ernal 3g 3h 3e 3f 4g 4h 4e 4f 5g 5h 5e 5f 6g 6h 6e 6f 7g 7h 7e 7f 8g 8h 8e 8f 9g 9h 9e 9f Default setting Changing a Thread Classification To display the current Thread Classification press gb You can...

Page 36: ...read Size Find the available Internal and External Thread characteristics for a M5 x 0 75 screw with a Tolerance Class of 4H Note The default Metric Tolerance Class is 6H Internal To view the current...

Page 37: ...d the available External Thread characteristics gbb Thread Class EXT MM 4G t THRED SIZE 5 0 75 MM t Rod Size for Thread Cutting ROD SIZE 5 0000 MM t Rod Size for Cold Forming CFORM SIZE 4 4520 MM t Ma...

Page 38: ...ercentage to 50 and calculate the new Cut Tap and Roll Tap Drill Sizes 50gt Thread THRD SIZE 50 t THRED SIZE 3 5 0 6 MM t Cut Tap Drill Size TAP DRILL SIZE 3 1 MM t Roll Tap Drill Size R TAP DRILL SIZ...

Page 39: ...Wire Measurements and Pitch Diameters the calculator assumes the equivalent External Thread Type if an Internal Thread Type is set i e Internal 6H is assumed External 6H for Metric Threads Find the Mi...

Page 40: ...ted Ideal Wire Size will be used to find the 3 Wire Measurement Pitch Diameter Known 3 Wire Measurement and Wire Size You can also find the measured Pitch Diameter if you know the 3 Wire Measurement a...

Page 41: ...re Size will be used to find the Pitch Diameter Bolt Pattern With the Machinist Calc Pro you can determine a Bolt Pattern by entering the Bolt Circle Diameter the Number of Bolt Holes and the Angle of...

Page 42: ...E DISPLAY OO 0 1 Enter the Center x coordinate 250ma ADJ 250 MM 2 Enter the Center y coordinate 380mp OPP 380 MM 3 Enter the Start Angle 20n ANGLE 20 4 Enter Bolt Circle Diameter 90d DIA 90 MM 5 Enter...

Page 43: ...d on Adjacent and Opposite Legs Calculate the Hypotenuse Angle and Adjacent Angle of a right triangle with an Adjacent Leg of 75 mm and an Opposite Leg of 100 mm Opposite Leg 100 mm Hypotenuse A B Adj...

Page 44: ...ngle of 35 34 KEYSTROKE DISPLAY OO 0 1 Enter the Hypotenuse 300mh HYP 300 MM 2 Enter the known Angle 35 34n ANGLE 35 34 3 Solve for the Adjacent Angle n ADJ 54 6600 4 Solve for the Adjacent Leg a ADJ...

Page 45: ...S and Trigonometry Examples Converting Degrees Minutes Seconds Convert 23 42 39 to decimal degrees KEYSTROKE DISPLAY OO 0 23 42 39 DMS 23 42 39 g dms deg 23 710833 Convert 44 29 to degrees minutes se...

Page 46: ...20 DMS 19 01 53 Trigonometric Functions The following drawing and formulas list basic trigonometric formulas for your reference 30 mm 40 mm 50 m m Given side A and angle a find Side C A a gF Cos e g 3...

Page 47: ...nists who work with metric drill screw thread classes and sizes Below are examples of how the calculator can be used for non metric applications with some examples for working in U S units numeric let...

Page 48: ...whole digits 1 through 97 Letter between A and Z Fractional or decimal Inch value maximum of 3 1 2 Inches After entering a Drill Size the selected Drill Size is displayed along with its decimal Inch e...

Page 49: ...letter is displayed or by entering the numerical order of the letter within the alphabet prior to entering Alpha Mode Select Drill Size E by toggling through Alpha Mode Then select Drill Size G by ent...

Page 50: ...r and next smaller sizes 3iD 7_60 MM DRILL SIZE 0 2992 INCH D N DRILL SIZE 0 3020 INCH 19 64 DRILL SIZE 0 2969 INCH 2 Enter the 1 hole size and view next larger and next smaller sizes 1iD 1 DRILL SIZE...

Page 51: ...or if you have a non common TPI you will need to directly enter the TPI value pressing t after entering it in order to store the Thread Size The following specifies the entry ranges that the calculato...

Page 52: ...1A 5 Change to U S Internal Thread Class 1 b INT 1B Fractional Thread Size Example Find the available Internal and External Thread characteristics for a 1 4 28 TPI screw KEYSTROKE DISPLAY g ALL CLEARE...

Page 53: ...Switch to Thread Class 2A and find the available External Thread characteristics gbb Thread Class EXT 2A t THRED SIZE 1 4 28 INCH t Rod Size for Thread Cutting ROD SIZE 0 2500 INCH t Rod Size for Cold...

Page 54: ...r batteries or perform a Full Reset press o hold down and press O your calculator will return to the following settings in addition to those listed above PREFERENCE SETTINGS DEFAULT VALUE Fractional R...

Page 55: ...4 displays fractional values to the nearest 64th of an Inch 1 2 displays fractional values to the nearest half Inch 1 4 displays fractional values to the nearest quarter of an Inch 1 8 displays fracti...

Page 56: ...are the same e g Feet x Feet area answers will remain in this format Square Feet but if units entered are different e g Inches x Feet area answers will be displayed in Square Feet Square Feet area an...

Page 57: ...me answers always displayed in Cubic Meters regardless of unit entry e g Feet x Feet x Feet Cubic Meters Cubic Inches volume answers always displayed in Cubic Inches regardless of unit entry e g Feet...

Page 58: ...play Capacity Your calculator has a twelve digit display made up of eight digits normal display and four fractional digits You may enter or calculate values up to 99 999 999 99 Each calculation is car...

Page 59: ...inist Calc Pro uses two LR 44 batteries Should your calculator display become very dim or erratic replace the batteries Note Please use caution when disposing of your old batteries as they contain haz...

Page 60: ...or returning any device for evaluation or repairs 2 If your product won t turn on check the batteries as outlined in the User s Guide 3 If you need more assistance please go to the website listed belo...

Page 61: ...LEAKAGE BENDING A BLACK INK SPOT OR VISIBLE CRACKING OF THE LCD WHICH ARE PRESUMED TO BE DAMAGES RESULTING FROM MISUSE OR ABUSE To obtain warranty service please contact the dealer who sold the produ...

Page 62: ...dition to this warranty Legal Notes Software copyrighted and licensed to Calculated Industries by Specialty Calculator Technologies LLC 2011 User s Guide copyrighted by Calculated Industries Inc 2011...

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