Fundamentals of Mechanical Prototyping - University of Pennsylvania

alliance.seas.upenn.edu
  • No tags were found...

Fundamentals of Mechanical Prototyping - University of Pennsylvania

MEAM 150Fundamentals of Mechanical Prototypingcomputer-numericalcontrolled machining© 2009, Jonathan Fiene, University of Pennsylvania1


title© 2009, Jonathan Fiene, University of Pennsylvania2


CNC Machiningbenefits:drawbacks:automatedexpensivecut complex shapessetup timerepeatablelimited availability© 2009, Jonathan Fiene, University of Pennsylvania3


machining centerretrofit millflood coolantauto tool changerX16” x Y12” x Z10”manual coolantmanual tool changerX31” x Y16” x Z23.5”© 2009, Jonathan Fiene, University of Pennsylvania4


the prototrak retrofit mill© 2009, Jonathan Fiene, University of Pennsylvania5


the controller© 2009, Jonathan Fiene, University of Pennsylvania6


Digital-Readout Mode© 2009, Jonathan Fiene, University of Pennsylvania7


DRO mode3-axisdigital readoutjogpower feedto set absolute zero on an axis:press X, Y, or Z, then ABS SETto set incremental zero on an axis:press X, Y, or Z, then INC SETto preset an axis:press X, Y, or Z, enter number, then INC SET.© 2009, Jonathan Fiene, University of Pennsylvania8


DRO mode3-axisdigital readoutjogpower feedto jog:press jog key (message will flash)check “feed rate” box - sign = directionpress X, Y, or Z to jogpress return© 2009, Jonathan Fiene, University of Pennsylvania9


DRO mode3-axisdigital readoutjogpower feedpower feed:press power feed keypress X, Y, or Zenter the distance to move, then INC SETpress gorate auto sets to 10 IPM© 2009, Jonathan Fiene, University of Pennsylvania10


DRO mode3-axisdigital readoutjogpower feeddo one:do a single CNC operationgo to (only works on electronic handwheels):sets a virtual stop at a given pointreturn abs 0:move the table and ram to your absolute zerospin speed:press SPIN SPEED, enter value, press SET© 2009, Jonathan Fiene, University of Pennsylvania11


Programming Options© 2009, Jonathan Fiene, University of Pennsylvania12


programming: 2 optionsconversational programming @ the machinefaster for simple operationsties up the machineCAD > CAM > machinedefine more complex partsneed to learn the software© 2009, Jonathan Fiene, University of Pennsylvania13


3d2.5d© 2009, Jonathan Fiene, University of Pennsylvania14


© 2009, Jonathan Fiene, University of Pennsylvania15


programming 2.5d© 2009, Jonathan Fiene, University of Pennsylvania16


program modebasic procedure1. enter header info2. program “events”3. execute© 2009, Jonathan Fiene, University of Pennsylvania17


assumed inputs when programmingtool offsetfeedratetool #either 0 or last usedlast usedsame as last used# pecks 1conrad 0© 2009, Jonathan Fiene, University of Pennsylvania18


programming eventsthe header is “event o”to move to the next event, press either SET keyposndrillbolt holemillarcpocketprofile© 2009, Jonathan Fiene, University of Pennsylvania19


programming eventsposndrillbolt holemillarcpocketprofile© 2009, Jonathan Fiene, University of Pennsylvania20


U8(2X) 4-40 UNCprogramming.250eventsTHRU11/16.188posn.234 1.250.500drill.42330.0°SECTION A-A1.0381.036R.813bolt hole1.1563/8millarcpocket.047.625AA1.625(3X) EQUALLY SPACED .116THRU, 1.344 B.C.profileUNLESS OTHERWISE SPECIFIED:DIMENSIONS ARE IN INCHESTOLERANCES:ANGULAR: MACH 1 BENDTWO PLACE DECIMAL .01© 2009, Jonathan Fiene, University of PennsylvaniaTHREE PLACE DECIMAL .005NAME DATEDRAWN 9/1CHECKEDJHCX 2/8TITLE:22


programming eventsposndrillbolt holemillarcx endy endx centery center(dir=2)x beginy beginpocketprofile© 2009, Jonathan Fiene, University of Pennsylvania24


programming eventsposndrillbolt holemillarccuts an interior circular,rectangular, or irregularpocket with an optionalfinish passpocketprofile© 2009, Jonathan Fiene, University of Pennsylvania25


programming eventsposndrillbolt holemillarccuts an exterior circular,rectangular, or irregularprofile with an optionalfinish passpocketprofile© 2009, Jonathan Fiene, University of Pennsylvania26


look© 2009, Jonathan Fiene, University of Pennsylvania27


set up mode© 2009, Jonathan Fiene, University of Pennsylvania28


tool table© 2009, Jonathan Fiene, University of Pennsylvania29


tool pathprocesses the program and displays tool pathsverify plandiscover errors!© 2009, Jonathan Fiene, University of Pennsylvania30


un mode© 2009, Jonathan Fiene, University of Pennsylvania31

More magazines by this user
Similar magazines