Completny_Plan.pdf
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©2011 MyDIYCNC
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Table of Contents
Introduction .................................................................................................................................................. 6
What is a CNC Machine ? .......................................................................................................................... 6
What is a DIY Desktop CNC Machine ? ..................................................................................................... 7
Specifications ............................................................................................................................................ 8
Overall Dimensions ............................................................................................................................... 8
Working Area Dimensions (metal base version) ................................................................................... 9
Precision .............................................................................................................................................. 10
Speed .................................................................................................................................................. 10
Power Requirements .......................................................................................................................... 10
MyDIYCNC Standard Spindle Specifications........................................................................................ 10
Possibilities .............................................................................................................................................. 11
Limitations .............................................................................................................................................. 11
Build Tools Required ............................................................................................................................... 12
Chassis Build ........................................................................................................................................ 12
Electronics Build .................................................................................................................................. 12
Terms and Conditions ............................................................................................................................. 13
Products, Content and Specifications ................................................................................................. 13
Accuracy of Information ..................................................................................................................... 13
Use of this document .......................................................................................................................... 13
DISCLAIMERS ....................................................................................................................................... 14
Plans ........................................................................................................................................................ 15
Exploded Views ................................................................................................................................... 15
Chassis Frame ...................................................................................................................................... 16
Steel and Aluminum ............................................................................................................................ 17
Wood ................................................................................................................................................... 21
Uprights and Gantry Brace .................................................................................................................. 22
Bearings Sub Frames ........................................................................................................................... 25
Motors, Couplings, Rods and Screws .................................................................................................. 30
Anti-backlash Lead Nuts ...................................................................................................................... 33
X Table ................................................................................................................................................. 35
Y Carriage ............................................................................................................................................ 36
Z Carriage ............................................................................................................................................ 38
Z Motor Mount ................................................................................................................................... 39
Spindle Mount ..................................................................................................................................... 42
Wiring Diagrams .................................................................................................................................. 43
Hardware ............................................................................................................................................ 45
Electronics ........................................................................................................................................... 46
Stepper Controller Module ................................................................................................................. 46
Spindle Controller Module .................................................................................................................. 49
Creating your Parts ................................................................................................................................. 51
Notes on Precision Cutting and Drilling .............................................................................................. 51
Rods and Bearings. .............................................................................................................................. 51
Position of Axes in Relation to Each Other ......................................................................................... 53
Building your DIY Desktop CNC Machine .................................................................................................... 56
Chassis Frame.......................................................................................................................................... 57
Cutting and Preparing Rods and Lead Screws ........................................................................................ 60
Gantry Support Uprights and Brace ........................................................................................................ 60
X Rods, Bearings and Table ..................................................................................................................... 62
Gantry and Carriages .......................................................................................................................... 64
Y-Z Assembly ....................................................................................................................................... 64
Axes Drivetrains ...................................................................................................................................... 67
Motor Couplings ................................................................................................................................. 67
Drivetrain Assembly ............................................................................................................................ 68
Stepper Motor Mounting .................................................................................................................... 70
Test Your Axes ..................................................................................................................................... 71
Power Supply and Enclosure ................................................................................................................... 71
Modifying and Preparing your Power Supply ..................................................................................... 71
Mod for non-PC operation .................................................................................................................. 72
Selecting the Required Power Feeds .................................................................................................. 72
Attaching the Electronics Enclosure (optional) ................................................................................... 73
Wiring Motors and Limit Switches .......................................................................................................... 75
Stepper Motor Wiring ......................................................................................................................... 75
Limit Switches (optional)..................................................................................................................... 75
Electronics Wiring ................................................................................................................................... 78
Connecting a DB-25 male Connector .................................................................................................. 78
Wiring the PC Parallel Port Connector ................................................................................................ 79
Power Connections ................................................................................................................................. 80
Configuring your PC and CNC app ............................................................................................................... 81
General Setup ......................................................................................................................................... 82
DIY Desktop CNC Machine Software Configuration Parameters: ....................................................... 82
KCam (Windows XP/98) .......................................................................................................................... 83
EMC2 (Linux) ........................................................................................................................................... 89
Other CNC Applications (Mach3, TurboCNC, etc.) ................................................................................ 100
Expanding Your DIY Desktop CNC Machine .............................................................................................. 101
Workspace Dimensions ......................................................................................................................... 101
Table Travel Mod .............................................................................................................................. 101
Spindle Upgrades .................................................................................................................................. 102
Stepper Motor Upgrades ...................................................................................................................... 103
Larger Stepper Motors ...................................................................................................................... 103
Salvaged and Recycled Stepper Motors ............................................................................................ 104
Electronics Upgrades ............................................................................................................................ 107
The Spindle Control Module ............................................................................................................. 107
Alternate Stepper Motor Drivers ...................................................................................................... 109
Future MyDIYCNC Developments ..................................................................................................... 109
Getting Support ......................................................................................................................................... 110
Your MyDIYCNC account ....................................................................................................................... 110
The MyDIYCNC Online Forum ........................................................................................................... 110
Troubleshooting .................................................................................................................................... 110
Appendices ................................................................................................................................................ 121
DIY Desktop CNC Machine Master Bill of Materials ............................................................................. 121
MyDIYCNC Stepper Driver Module Bill of Materials ............................................................................. 125
MyDIYCNC Spindle Control Module Bill of Materials ........................................................................... 126
MyDIYCNC Stepper Motor Signal Exerciser .......................................................................................... 126
Wiring Diagram ..................................................................................................................................... 127
DIY Desktop CNC Machine Wiring Diagram color codes................................................................... 128
Stepper Motor Mount Holes (NEMA 17) .............................................................................................. 129
INDEX ........................................................................................................................................................ 130
NOTE
: For those who purchased a kit, you may jump ahead to the section
Building Your DIY Desktop CNC Machine
for instructions on assembly of your
DIY Desktop CNC Machine. Those instructions, along with the product-specific
instructions delivered with your kit, will guide you through building your DIY
Desktop CNC Machine.
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Rafael1979
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