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| [[Media:CNClatheExercise.pdf|HSMworks turning step by step]] . You will need a STEP file to work with this manual. | | [[Media:CNClatheExercise.pdf|HSMworks turning step by step]] . You will need a STEP file to work with this manual. |
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| ==CNC Lathe Notes==
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| Centroid controller
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| G-code with some extra M-codes
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| lathe motor is 10-HP, but, with VFD speed control %age of top speed corresponds to roughly the mount of HP availabe.
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| Uses Tri-Cool for coolant
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| Chk oil level on back, way oil
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| Turn on
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| Set home: Green button at lower right of controller will cause it to run through its homing procedure.
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| The tailstock will trip the furthest Z-limit switch, so move tailstock towards chuck. If it is not appearing to move switch from ‘Inc’ to ‘Cont.
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| MPG: Mean Pulse Generator
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| Part Design Considerations:
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| *Inside corners should have radii greater than that of the tool insert tip.
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| *Outside corners should be set to 0.005-0.010” radii to avoid burrs.
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| *Stock to leave for finish passes: 0.015” axial & 0.030” radial
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| *Can cut 0.1” off of radius with Aluminum
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| Define tools in HSMWorks<br>Define Tool Positions & Angles<br>Define Tool Feeds & Speeds
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| Parting in hard alloys should be 300SFM for carbide cutters
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| Parting defaults to 0.040”/rev., which leads to DESTRUCTION! Better to set at 0.0035”/rev.
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| Make sure that your tools have different numbers in the tool library for a single job
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| Inserts with a negative rake are mounted at an angle on the toolholder, so cannot cut away from the chuck as the rake is actually negative in that direction.
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| Set max spindle speed when changing gears and ranges. This is a global var?
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| Post-processing: Use FANUC
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| G53: Retract<br>G54: Work Offset
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| Keep in mind that G53 & G54 go to coords (0,0) which will be the face of the stock.
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| Tool changes are done explicitly by:
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| * Rapid Traverse - G53, G54, etc.
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| * Tool Offset
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| ** Home machine
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| ** Set 0s on stock
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| ** The set tool offsets
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| In graph mode we can get range to see only those moves due to those lines of code.
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| VS-Codes is good for editing G=code. Use G-code add-in
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| Use locknut on toolholder to avoid changing height when handling toolholder.
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| F1/Set-up
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| F2/Tools
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| * Offset Library
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| * Tool: may set to 0, or set offset to a Var
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| MPG: Can turn off to avoid changing values if you accidentally bump into the hand wheels during operation
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| F2/Measure
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| * Sets the offset
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| Set Z-Ref: 2” when using indicator
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| Move manually to where you expect (0,0) to be and look at the numbers on the screen as a check.
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| Run Menu
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| Set part count to 1
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| Re-set spindle speed and coolant back to Auto CTRL
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| For the big chuck, the max speed is 700RPM
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| For the Medium chuck, the max speed is 900RPM
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| For the collet closer, the max speed is 2-2,400RPM
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| == Lathe Tool Codes ==
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| Profiling and boring insert codes are 4 letters and 3 numbers (single digit is ANSI/inches, double digit is ISO/mm). Formatted ABCD123 (ANSI) or ABCD010203 (ISO)
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| Example code is D C M T 3 2.5 1
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| - Letters define shape of insert, numbers define size (not all TCMT inserts the same size)
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| - http://www.carbidedepot.com/formulas-insert-d.htm for more information
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| * A Shape code: T for triangular, R for round, many others
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| * B relief angle: N=0 degree, up to G=30 degree (lookup chart)
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| * C tolerance: when in doubt use "M" (loosest tolerance inserts)
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| * D cross section: is mounting hole countersunk? chipbreaker? one or both sides?
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| * 1 size: english - diameter of inscribed circle in 1/8" (1/32" for IC less than 1/4")
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| ** metric - diameter of inscribed circle in mm
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| * 2 thickness: english - thickness in 1/16" (1/32" if IC is less than ¼") decimals allowed
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| ** metric - approximate thickness in mm (look up exact values)
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| * - 3 nose radius: english - radius in 1/64" (0 = "sharp" = max radius 0.005")
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| ** metric - radius in 1/10 mm
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| #
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| # Tool holders have a nomenclature too. 5 letters, 2 numbers, letter (S D J C R 10 3 A)
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| - http://www.carbidedepot.com/formulas-th-d.htm for more information
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| - first letter (A) is how the insert is locked to the holder
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| - second letter is insert shape (redundant if you know insert code)
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| - third letter (C) is insert angle relative to holder (-5 degree, +3 degree, etc...) Note that a 0
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| degree tool has leading edge perpendicular to rotation axis. (Not a “neutral” tool)
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| For Right hand tool: positive rotation is CW, negative CCW from perpendicular.
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| For Left hand tool: positive rotation is CCW, negative CW from perpendicular.
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| - fourth letter is relief angle of insert (again redundant)
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| - fifth letter (E) is direction (Left, Neutral or Right handed)
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| - first number is square shank in 1/16” (10 = 5/8” = 10/16”, etc...)
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| - second number is insert IC size (redundant)
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| - last letter is overall length (look up or just measure)
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