DISPLAY Challenges
Machine Shop Project
( Computer Numeric Control ) Questions ? Please contact Frank Parker at : Email : franklin . parker @ nwtc . edu Phone : 920-498-6384
DISPLAY Challenges
TRADES & ENGINEERING TECHNOLOGIES
Student capacity : No limit
( Manual Machining ) Any metal , plastic , wood work piece or part which is machined on one or more types of manual / conventional machine tools ( milling machine , engine lathe , drill press ).
( Computer Numeric Control Machining ) Any metal , plastic , wood work piece or part which is drawn with any CAM ( Computer Aided Manufacturing ) software , or long-hand programmed with G & M code and then created on a CNC machine ( milling , turning , routing , waterjet , EDM ).
All displays will be evaluated on tolerances , surface finish , and workmanship , in addition to a display of the blueprint used for machining ( all submissions should have a blueprint ), additionally a CAM drawing with a print out of the machine code ( G & M code ) used for CNC parts .
Tolerances :
� Fractional Dimensions = +/ - 1 / 64 � ( Two place decimals ) . XX = +/ - . 01 � ( Three place decimals ) . XXX = +/ - . 005 � Angles = +/ - 1 / 2 degree
Surface finish :
� �
Machined surface should be a 125 Ra or better No burrs or sharp edges present
Workmanship considerations :
� Complexity of the part ( is the part or piece challenging )? � Functionality of assembled parts ( does the part or piece serve a purpose )?
Documentation : �
�
All submissions should have a blueprint with dimensions and tolerances ( hand-drawn sketch is acceptable ) CNC Parts should have a CAM drawing and Gcode print out
18