CNC Milling Operations II

This course discusses the principle operations of both vertical and horizontal CNC milling machines. You will learn about the basic CNC machining center, principle operations, manual controls, programming methods, tool-offsets, G54-G59 work offsets, cutter radius compensation, and tool selection methods. General operator skills and basic setup skills will be stressed.

Locate, identify and explain the purpose of the basic components of a CNC machine

II.  Explain the coordinate grid system and how it relates to the CNC machine

   III.  Define absolute programming and the use of coordinates

IV.  Define incremental programming and the use of signed    incremental distances

  V.  Explain the four most common axes, X, Y, Z, and B

VI.  Perform basic operations using the CRT and soft keys

   VII.  Explain what makes up a part program

  VIII.  Explain what makes a block

IX.  Define basic G codes, M codes, and what F, P, S, T, X, Y, and Z address as words and their functions

  X.  Explain modal codes and address words non-modal codes and address words Locate, identify, and explain the use of the basic controls on the operator control panel

XI.  Reset an (E-Stop) condition and perform a manual reference point return operation

   XII.  Unload a finished part and load a workpiece into a fixture and start an active program

  XIII.  Use the program text and program check screens to monitor program execution

   XIV.  Explain tool length offsets and why are they used

XV.  Activate a program already stored in memory

   XVI.  Use G28 to return the machine to a reference point

  XVII.  Jog the machine using the jog buttons and handwheel

 XVIII.  Remove and install a fixture or fixtures into the machine bed

   XIX.  Remove tooling from and load tooling into the tool magazine

XX.  Manually remove a tool form and load a tool into the machine spindle

   XXI.  Establish program zero location by dialing in on a set point hole and use ALTER editing to establish the point in the G92 block

  XXII.  Establish program zero location by use of G54 through G59  

 XXIII.  Display, clear, and enter values into the tool offset table

  XXIV.  Perform INSERT, ALTER, and DELETE editing

   XXV.  Prepare and control and start the trial run

  XXVI.  Calculate coordinates and correction values to correct a tool path

 XXVII.  Identify and correct problems caused by tooling

XXVIII.  Stop and restart the program and machine all or part of a tool path by rerunning blocks

  XXIX.  Define the basic circular-cut information needed to produce arcs and complete circles

   XXX.  Explain the information used in the circular cut data blocks required to produce a circular feature and describe the tool path

  XXXI.  Edit a complete circle feature to bring the feature into a proper location and size

 XXXII.  Explain the basic operation and basic format of a canned cycle

XXXIII.  Explain the drilling and reaming canned cycle

 XXXIV.  Explain the tapping cycle

  XXXV.  Explain the boring canned cycles