CNCCMV2: Difference between revisions

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=Action Plan=
=Intro=


*Conceptual Design
[[CNCCMV2/Overview | CNC Circuit Mill V2 (CNCCMV2): Overview]]


*Specific Design
=Design=


*Sourcing
[[CNC Circuit Mill/V2 Design Rationale | Design Rationale]]


*Manufacturing
[[CNCCMV2/CAD | Part Files]]


*Testing
=Build Instructions=


*Documentation During All of the Above
[[CNCCMV2/Build_Rationale | Build Rationale]]


=Design Rationale=
[[CNCCMV2/Sourcing | Sourcing]]


[http://opensourceecology.org/wiki/CNC_Circuit_Mill/V2_Design_Rationale Thought Process]
[[CNCCMV2/Structure | Structure]]


=CAD and 2D Fabrication Drawings=
[[CNCCMV2/Electronics | Electronics]]


[http://opensourceecology.org/wiki/CNCubeDesign CNCube Design]
[[CNCCMV2/Software | Software]]


[http://opensourceecology.org/wiki/CNCPlateDesign CNC Plate Design]
=Modularity and Scaling=


=Connexions Modules=
[[CNCCMV2/Modularity | Modularity]]


[http://cnx.org/content/m43337/latest/ What is a CNC Circuit Mill?]
[[CNCCMV2/Scaling | Scaling]]


[http://cnx.org/content/m43342/latest/ How to Use the CNC Circuit Mill]
=Operation and Maintenance=


[http://cnx.org/content/m43353/latest/ How to Design a CNC Circuit Mill]
[[CNCCMV2/Usage | Operation]]


[http://cnx.org/content/m43355/latest/ Getting Git on Linux]
[[CNCCMV2/Maintenance | Maintenance]]


[http://cnx.org/content/m43354/latest/ Getting Ruby on Linux]
See also:
 
* [[CNC Circuit Mill]]
[http://cnx.org/content/m43356/latest/ Getting Arduino IDE]
* [[CNCCM]]
 
* [[User:Lennywayne | CNC router]]
[http://cnx.org/content/m43365/latest/ Making the Arduino IDE Work on Linux]
 
[http://cnx.org/content/m43393/latest/ Getting and Using Kicad]
 
[http://cnx.org/content/m43397/latest/ Getting pcb2gcode]
 
=Key Performance Specifications=
 
*X Axis Travel Range = 20cm
 
*Y Axis Travel Range = 20cm
 
*Z Axis Travel Range = 5cm
 
*Step Motor Torque at 12VDC = 3.2kg-cm
 
*Spindle Max Rotation Speed = 22600rpm no-load
 
*Spindle Motor Torque at 24VDC = 88.5g-cm at max efficiency
 
*Workpiece Holding Mechanism = Linear Bolt and Tensioning Nut
 
*For Prototype II, define goals based on study of industry standards. Include desired precision + accuracy + speed.
**Minimum step size for each axis plus variance
**Repeatability of motion (drift) (determined by going to certain locations a large number of times)
**Minimum spacing between traces (determined by minimum allowable size of bit + precision)
**Minimum trace size possible
**Goal: repeatability is as good as step size - ie, all inaccuracy is negligible compared to step size, and zero backlash at all practical milling speeds.
**Define practical milling speed range based on substrate
 
=Key Design Specifications=
 
*Step Motor Axis Drive
 
*Rotary-to-Linear Motion Converting Stainless Steel Leadscrew and Wear-compensating Leadscrew Nut
 
*Anti-friction Bronze Sleeve Bearings
 
*Precision Stainless Steel Axis-Supporting Shafts
 
*Versatile Holding Platform with Magnets
 
*Brushed DC Motor Spindle Drive
 
*Precision Stainless Steel Spindle Shaft
 
*Computer to Microcontroller to Stepper Driver Electronics Pathway
 
*Gcode Streamer to Gcode Interpreter Software Pathway
 
=Cost=
 
*Cost values in USD. In practice, some items must be purchased in greater quantity than necessary; the following values are equalized to the correct quantities. List excludes tools and shipping.
 
*Cube Frame Metal =
 
*Axes Structure Metal =
 
*Metal Shafts = 124
 
*Leadscrews and Leadscrew Nuts = 240
 
*Bearings = 65
 
*Fasteners = 70
 
*Control and Drive Electronics = 130
 
*Power Supply = 35
 
*Software = Open Source
 
*'''Total = '''
 
=Sourcing=
 
*Spreadsheet File
 
LINK HERE
 
*Prototyping Spreadsheet
 
<html><iframe width='1200' height='300' frameborder='0' src='
 
https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AlpsBarfpPkzdFk5aDY3dHM0eEhfZHNkWVppdV9EelE&output=html
 
'></iframe>
</html><br/>
 
*To edit or download the spreadsheet, click on the following link.
 
https://docs.google.com/spreadsheet/ccc?key=0AlpsBarfpPkzdFk5aDY3dHM0eEhfZHNkWVppdV9EelE
 
=Electronics=
 
=Soldering Connectors=
 
[http://opensourceecology.org/wiki/CNCCMV2/Electronics Electronics]
 
=Software=
 
=Ubuntu 10.04 LTS 32-Bit=
 
[http://opensourceecology.org/wiki/Git Get Git]
 
[http://opensourceecology.org/wiki/ArduinoIDE Get Arduino IDE]
 
[http://opensourceecology.org/wiki/Ruby Get Ruby]
 
[http://opensourceecology.org/wiki/GRBL Get GRBL]
 
[http://opensourceecology.org/wiki/Gctrl Get Gctrl]
 
[http://opensourceecology.org/wiki/Processing Get Processing]
 
[http://opensourceecology.org/wiki/RXTX Move RXTX files to make Arduino boards work with Processing]
 
[http://opensourceecology.org/wiki/Gctrl Modify Gctrl code for Easier Connection with Arduino on Linux]
 
[http://opensourceecology.org/wiki/GRBL Modify GRBL Files for enabling GRBL flashing to Arduino board on Linux]
 
[http://opensourceecology.org/wiki/GRBL Flashing GRBL to the Arduino]
 
[http://opensourceecology.org/wiki/Gctrl Run Gctrl]
 
[http://opensourceecology.org/wiki/GRBL Determine GRBL Configuration Changes Required]
 
[http://opensourceecology.org/wiki/GRBL How to Modify GRBL Settings]
 
=Design Modifications=
 
=Modularity=
 
*Different step motors and drive mechanisms can be mounted onto the axis support angles via mounting holes
 
*Different frames can be used, provided they have precise mounting holes for the axis support angles
 
*Different holding platforms can be used, provided they have mounting holes for the X axis moving angles
 
*Different spindle setups can be used, provided they have mounting holes for the Z axis moving angles
 
*Different stepper driver boards and power supplies can be used, provided they have compatible performance specifications within the electronics system
 
=Scaling=
 
*Scaling mainly consists of changing the size of the frame (to affect travel ranges) and the type of step motors (to affect travel rates)
 
*Other discrete components such as fasteners, leadscrews, and shafts need only be scaled if necessary for functionality or certain desired performance specifications
 
*The travel range calculation for the X axis:
 
(X Travel Range) = (Distance Between 2 Parallel Frame Angles Along Horizontal Plane) - (Length of Platform Along Axis)
 
*The travel range calculation for the Y axis:
 
(Y Travel Range) = (Distance Between 2 Parallel Frame Angles Along Vertical Plane) - (Length of Z Support Angles Along Axis)
 
=Usage=
 
*Circuit Schematic to Gcode File Toolchain
 
*See following link for list of electronic design suites:
 
http://en.wikipedia.org/wiki/Comparison_of_EDA_software
 
*PCB-Gcode Optimizer
 
http://cnc.goodbits.net/wiki/index.php5/Pcb-gcode_optimizer
 
http://www.millpcbs.com/index.php?option=com_content&view=article&id=10&Itemid=44
 
=Maintenance=
 
=Distributive Enterprise=
 
=GVCS Product Ecology=
 
[[Image:2b-Genfabecology.png|thumb|600px|CNC Circuit Mill [[Product Ecology]]]]
 
'''Uses'''
 
*Induction Furnace - Steel
 
*Aluminum Extractor - Aluminum
 
*Metal Roller - Fasteners, Metal Angles, and Flats
 
*Rod and Wire Mill - Wires, Shafts
 
*CNC Multimachine - Bearings, Leadscrews, Leadscrew Nuts
 
*Motors - XYZ Movement
 
*CNC Circuit Mill - Control Circuit Boards
 
*Universal Power Supply - Power
 
'''Creates'''
 
*Milled Circuit Boards
 
See [[Product Ecologies]] for more information.

Latest revision as of 02:04, 26 October 2012

Intro

CNC Circuit Mill V2 (CNCCMV2): Overview

Design

Design Rationale

Part Files

Build Instructions

Build Rationale

Sourcing

Structure

Electronics

Software

Modularity and Scaling

Modularity

Scaling

Operation and Maintenance

Operation

Maintenance

See also:

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