iet 499c midterm
TRANSCRIPT
IET 499C Troubleshooting and Re-
modeling of USB CNC Control System at the AET
Manufacturing Systems Lab
CHRISTOPHER J. A MULLINSMentor: Dr. William Grise
Instructor: Dr. Hans ChapmanMarch 27, 2015
Table of Contents • Problem Statement • Solution Approach • Project Timeline • Research Phase • Concept Phase • Wiring and Connections• Connection Testing • What’s Next? • Expected Outcomes
PROBLEM STATEMENT
• A CNC machine in the Reed Hall AET lab calls for reinstatement of a controls system.
• Without this control system, the stepper motors will not be perform as the user would desire.
• It is the intent of this project to get the control system fully implemented and have the machine at operation standards.
SOLUTION APPROACH
• Research Phase/Concept Phase. Researching schematic, wiring guides, motor connections. Planning layout
• Wiring connections, doing troubleshooting of wiring
• Connection and Testing of Motors/ Circuit • CAD/Workstation layout, CAD Circuit Layout • Final setup/testing
PROJECT TIMELINE
RESEARCH PHASE • Researched Micro-step
Drivers • Found motor wiring guides • Power Supply
connections/grounding wiring
• Hand control operation • Spindle speed connections Figure 2: Simple motor connection guide.
CONCEPT PHASE• Labeled connections to
circuit• Motor placement and
movement • Hand control and USB
pictures
Figure 3: Control system before new wiring job and connections.
WIRING AND CONNECTIONS
• Current Phase • Connection of
motors and testing for correct Voltage to circuit without destroying all the drivers and circuit.
• Power switch was connected.
• All accomplished with 16 G wiring.
Figure 4: New circuit wiring. Including the motor power connections.
TESTING CONNECTION
• Testing the circuit to make sure none of the components will be damaged from too much voltage into the power supply or into the circuit board. Figure 5: Checking power supply to check if it is receiving the 120 volts of input.
Figure 5: Motor connection guide. 3 A Motors
WHATS NEXT? • Doing finalized motor connections (using 20 G
wires)• Installation of the CNC program onto the PC. • Calibration of the CNC machine after program is
loaded. • Running tests with program and toggle remote
and do any troubleshooting if needed. • Doing AUTOCAD drawing of circuit layout.
Expected Outcomes • Get the CNC moving successfully for student use. • The main goal of this project is to leave behind a
CNC machine that can be used for instruction or small student projects within the AET department.
• The machine should be able to perform small tasks and projects successfully.
References • Giorgos Lazaridis (7 May, 2010) How Stepper
Motors Work. Retrieved from http://www.pcbheaven.com/wikipages/How_Stepper_Motors_Work/
• Changzhou RATTM Motor Co. 4 Axis USBCNC Breakout Board User Manual.