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| | name = PCB Mill/Micro CNC <!-- Name of the item. --> | | | name = PCB Mill/Micro CNC <!-- Name of the item. --> |
| | image = Hackspace_Unknown.png <!-- Image of the item. Leave with placeholder image if none exists. --> | | | image = Hackspace_Unknown.png <!-- Image of the item. Leave with placeholder image if none exists. --> |
| | model = Unknown <!-- Model --> | | | model = Dahlgren Wizzard 2000 ST (heavily hacked) <!-- Model --> |
| | category = Equipment <!-- Main category. Please leave alone to keep item in this category --> | | | category = Equipment <!-- Main category. Please leave alone to keep item in this category --> |
| | subcat = CNC <!-- Sub-category if one exists. Please check main listing to see other categories contained within the main one --> | | | subcat = CNC <!-- Sub-category if one exists. Please check main listing to see other categories contained within the main one --> |
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| | consumables = Unknown <!-- Any items used up in normal operation, such as; ink, paper, saw-blades, cutting disks, oil, etc.. --> | | | consumables = Unknown <!-- Any items used up in normal operation, such as; ink, paper, saw-blades, cutting disks, oil, etc.. --> |
| | accessories = Unknown <!-- Any items associated with the equipment but not consumable, such as; drill bits, safety gloves, goggles, etc.. --> | | | accessories = Unknown <!-- Any items associated with the equipment but not consumable, such as; drill bits, safety gloves, goggles, etc.. --> |
| | reqtraining = <!-- Is training required to use this equipment? Yes or no. --> | | | reqtraining = Yes <!-- Is training required to use this equipment? Yes or no. --> |
| | trainlink = Unknown <!-- If training is required, provide a link to training signup or contact page. Otherwise leave blank. --> | | | trainlink = Unknown <!-- If training is required, provide a link to training signup or contact page. Otherwise leave blank. --> |
| | acnode = <!-- Is the equipment ACnode locked? --> | | | acnode = <!-- Is the equipment ACnode locked? --> |
| | owner = LHS <!-- Provide a link to owners members page if other than LHS --> | | | owner = LHS <!-- Provide a link to owners members page if other than LHS --> |
| | origin = Donated <!-- If via pledge, please link to the completed pledge page on the wiki --> | | | origin = Donated <!-- If via pledge, please link to the completed pledge page on the wiki --> |
| | location = Basement, parts storage<!-- Floor, room/zone and location within that area --> | | | location = Arts/crafts corner ground <!-- Floor, room/zone and location within that area --> |
| | maintainers = Sci <!-- NO LINKS PLEASE; it currently breaks the template. If someone is nominated as managing the upkeep of this item, please list them here. --> | | | maintainers = Martin_p <!-- NO LINKS PLEASE; it currently breaks the template. If someone is nominated as managing the upkeep of this item, please list them here. --> |
| | template_ver = 1.1 <!-- Please do not change. Used for tracking out-of-date templates --> | | | template_ver = 1.1 <!-- Please do not change. Used for tracking out-of-date templates --> |
| }} | | }} |
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| This is a project to convert a CNC engraver to also allow it to operate as a CNC pcb drill. | | This is a project to convert a CNC engraver to also allow it to operate as a CNC pcb drill. The Engraver is a Dahlgren Wizzard 2000 ST. |
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| The Engraver is a Dahlgren Wizzard 2000 ST.
| | Currently, the engraver is actively worked on by [[User:Martin_p|Martin_p]], and for the time being lives on the floor in the arts/crafts corner. The original roadmap/discussion has been moved to [[Talk:Equipment/Dahlgren_Wizzard_2000_ST|discussion]] for this page. |
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| == It needs ==
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| * Cosmetic cleaning & minor surface rust removal.
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| * 3 x stepper motors (NEMA 14 by the looks of it)
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| **I've got a nema 17 and may be able to source 2 more. Would that fit ? -artag
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| ***This video shows the vertical motor in use as well as the spindle motor with pulley: http://www.youtube.com/watch?v=0nGC2vyW9VU
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| **Maybe consider getting 0.9 degree step stepper motors to increase precision -[[User:Senthil Seveelavanan|Senthil Seveelavanan]] ([[User talk:Senthil Seveelavanan|talk]]) 10:34, 5 July 2013 (UTC)
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| * a way of connecting the steppers to the leadscrews.
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| **Hipster has some couplers of a type that are now really cheap on ebay
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| * a drill of some kind.
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| **Some people are using aero/quadcopter motors. Would the controller handle one ? might need a sensorfull motor
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| ***Liam said it took a straight DC motor. So proably PWM speed control if that's the case.
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| * a way to fix the drill to the x/y platform.
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| ** Spindle is an interchangable module. Any arrangement with the same OD of housing will fit. Will however need round-profile drive belt and motor pulley. Emco unimat spares may be suitable.
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| * chuck for the drill.
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| **Collets are much better than a chuck. An ER12 collet chuck would be better than the cheap dremel style, but needs a decent sized motor shaft. There may be something more suitable for auto toolchange (one day)
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| * small drill bits.
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| ** As standard does not take drills but "gravers" that go through the whole spindle for precise depth adjustment
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| ** It would be nice for it to actually be able to still engrave/mill rather than just drill holes when repaired.
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| * some rewireing to fix endstops etc.
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| At the moment the engraver comes with an embedded computer (386FX!), which powers up and works fine, and is connected to a control board that has 3 x [http://imshome.com/products/im481h.html stepper drivers] and a [http://www.onsemi.com/pub_link/Collateral/MC33035-D.PDF brushless dc motor controller] on it.
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| | |
| == Choices ==
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| We've got 3 main choices:
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| # Use the existing controller, but we'd need to give it the steppers and drill that it expects.
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| # Chuck the existing control board and use an arduino or something to talk to the [http://imshome.com/products/im481h.html existing drivers]
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| # Chuck all the electronics and do it all our selves.
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| The first may be the quickest, but we'd need to get identical parts - the manufacturer may sell them, which might make them more expensive. | |
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| The second will involve some hardware reverse enginerring to work out the pinouts to talk the existing drivers
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| The 3rd might also be fairly easy - presumably we can use the reprap style electronics with it??
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| *Solexious' stepper drivers could be used, though not with reprap controls. Might also be a good target for grbl.
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| | |
| == Proposed roadmap ==
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| It currently seems easiest, and possibly more reliable long-term, to fix rather than hack. I suggest we go with this until proven otherwise.
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| # Check pinout of control board output. Will provide nessesary info on stepper voltages, wiring and spindle motor control, as well as verify controller function.
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| # Presuming control output okay, obtain and fit steppers, wire in stops, test motion.
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| #* If controls damaged, then move to other controls
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| #* Check if brass wheel causes any motion difficulty
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| # Fit new spindle motor (see manual page 26 for stock assembly diagram)
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| # Make spindle bearing and collet holder (see page 25 of manual - this may be very very tricky. Many precision parts)
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| #* Alternately make missing parts for existing spindle mount. Not much use for immediate goals though.
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| # Fit replacement table
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| #* Pricing is hard to find, but many engraving machine suppliers sell replacement T-slot tables which will provide an optimum mounting solution.
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| #* A temporary table made of MDF or similar should be enough to test function crudely.
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| == Pics ==
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| * [http://pointless.net/photos/id/1363117805/ stepper drivers]
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| * [http://pointless.net/photos/id/1363117840/ other bits on the interface board]
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| * [http://pointless.net/photos/id/1363120494/ 386 computer + transformer]
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| * [http://pointless.net/photos/id/1363120499/ top view]
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| * [http://pointless.net/photos/id/1363120512/ view of the mounting thing for a stepper, NEMA 14?]
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| * [http://pointless.net/photos/id/1363120524/ the cover]
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| == Links ==
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| * Wizzard ST manual, includes parts numbers (ST High Lift not 2000): http://www.suregrave.com/downloads/manuals/Wizzard%20ST%20Manual.pdf
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| * Video of an 2000 ST opened up for stepper testing. Shows X/Y spindle motor. http://www.youtube.com/watch?v=0nGC2vyW9VU
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| * Some raw interfacing info: http://www.vectric.com/forum/viewtopic.php?f=4&t=11920
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| * Third Party support page. Some interesting points: http://www.engraversnetwork.com/Dahlgren/wizzard_tip001.htm
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| [[Category:PCB making]] | | [[Category:PCB making]] |
| [[Category:Projects]] | | [[Category:Projects]] |
