Roland is a late-80s Roland 2200 pen plotter, previously used by Telecom Australia, donated to the space in 2014. At that stage, it had been communicated to via serial by the previous owners, however the pen effector was not operable.
The aim is to make it into a demonstrator CnC machine, showing the basic principles of X/Y motion, homing/endstops, G-code sending and different possible end effectors (Pen, Dremel/CnC +/- 3d printer).
— Lauren Shearer 2016/01/15 13:54
Project Champion: Lauren Shearer (L.Shearer@vicpaeds.com)
Alternate Contact: John Stewart
Project Status: Not yet complete / Build in progress
During build; interim assessment
|Risk Assessment: Roland the CnC Demonstration Machine|
|Personal Injury||Low||Possibility of crush injury from exposed moving parts|
|Injury to Others||Negligible||One operator at a time|
|Risk of Fire||Negligible||Testing electronics excluded|
|Damage to Equipment||Low||Unit in testing|
|Damage to Space||Negligible|
|Notes/Special Equipment||Unit in build; damage may occure due to unexpected movement or incorrect wiring. Not for general use|
|One operator at a time. Others to stand clear during operation|
|Assessment by||Lauren Shearer||2016/01/15 13:24|
Breakdown of the unit was completed on 13/1/2015. The unit was stripped of previous electronics, coverings were removed and the mechanics were reviewed.
Electronics: Original logic board Original Motor Driver board (Note the 5 h-bridges and very large heatsink). 240vac - 24vac transformer x-gantry electronic board end-effector electronic board pen-loader microswitch board (broken) Information panel with 2 x 4-digit 7-segment LEDs Control panel with many microswitches
Mechanics: X-axis: One linear rail, ~12mm, One rolling bearing guide, with driving cable on both sides. Small microswitch homing to left, microswitch mounted on gantry. M3 x ~25mm screw on motor mount adjusts the endstop. X-axis stepper: Sanyo 5-phase, 10-wire stepper (Essentially NEMA23). Significant reduction gearing Y-axis: One linear rail, ~18mm, additional rolling guide, single driving cable (out-and-back). Small microswitch homing to top, microswitch hounted on end effector mount. No obvious adjustment. Y-axis stepper: Smaller, 5-phase, 10wire stepper (Essentially NEMA17). 1:1 drive of y-axis cable. End effector: Mounted low over current bed. Has an ~18mm circular mount, as well as the y-axis endstop.
Base: The base is made of sheet metal (steel) and has several areas of rust. These will have to be repaired. The lid is mounted on several piano-style hinges and opens towards the bottom of the case. When closed, the lid forms the work surface and is sloped towards the operator
Fairing: The fairing has been removed. There is usually fairing covering all the mechanics; it has been suggested that these should be left off to show the mechanics, although I would prefer replace them with something safe but transparent. The lower panel contained manual control mechanics including x, y-axis position and manual adjustment. It would be nice to be able to reuse some of this space although the actual controls are not useful
— Lauren Shearer 2016/01/15 14:03
As of 13/1/15: