Re: [CAD_CAM_EDM_DRO] Robotic Arm

Hi Mark,

The stencil I use is 4mil mylar from http://www.smtstencil.com/

When I got it made I had the 4 panel mounting holes put onto the paste mask
file that I sent.

As the mounting holes are 3mm, I got some 3mm dowel pins and mounted 2 of them
into a piece of MDF. THE PCB panel was located on the Pins, then the mylar
stencil was then placed on the 2 pins. Perfect Alignment. I then used spare
PCBs to pack around the panel. A plastic putty spatula and some paste finished
the job.

Cheers,

Peter.

Mark Vaughan wrote:

> Peter
>
> What thickness Mylar are you using for your screen print?
>
>
>
> I’ve got my machine it’s an old Dynapert 318, but with a full set of spare
> parts and over two hundred parts feeders.
>
> I also bought a full conveyer oven, which arrived about a week ago, customs
> having ripped half the insulation out looking for drugs.
>
> Am awaiting my first batch of PCB’s for one of our marine products for a smt
> run.
>
> The mylar film, or stainless sheet laser cutting have all now given loads of
> options, but have very little advice.
>
> One of the US dealers has dropped the price of their Chinese conveyer ovens
> from $10,000 to about a quarter of that. It has three heating zones, and a
> big set of fans to cool the parts.
>
> Actually the oven would be the easiest thing to make, they say it’s all very
> hi tech, but as you know from your delonghi the technology is minimal. My
> conveyer oven does have a few safety issues, like the plug to the fans is a
> microphone connector with 240V on it, and live pins. My only complaint is
> the gap isn’t high enough to get a pizza through.
>
> I looked at an oven on ebay the other day, it went for £20, I was very
> tempted until I discovered it was 5m long, 3m wide and draws 50 amps on each
> of three phases. But for others that are interested there are box table top
> ovens for sale from China starting at around a thousand bucks ($).
>
>
>
> Regs Mark
>
>
>
> Dr. Mark Vaughan Ph'D. B.Eng. M0VAU
>
> Managing Director
>
> Vaughan Industries Ltd, reg in UK no 2561068
>
> Water Care Technology Ltd, reg in UK no 4129351
>
> Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
> Phone/Fax 44 1872 561288
>
> RSGB DRM111(Cornwall)
>
> _____
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Peter Homann
> Sent: 27 March 2007 06:36
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Robotic Arm
>
>
>
> Hi Jon,
>
> See below.
>
> Jon Elson wrote:
>> Peter Homann wrote:
>>> Hi Jon,
>>>
>>> Good choice. I received my Pick and place machine a couple of weeks ago.
>>> It is a Yamaha YM-84, commonly known in the USA as a Philips CSM-84.
>>>
>>> It came with about 50 feedersas well. I've already run out of feeder
>>> slots
>>> on the machine. It has 3 heads (0.7mm, 2mm and one about 4-5mm. It also
>>> has a pneumatic centering station plus an upwards looking centering
>>> vision
>>> camera. Plus a tray freeder
>>>
>>> Ran off a handful of ModIO panels and a DigiSpeed panel over the
>>> weekend.
>>> It's quite a fun machine to use.
>>>
>>> One of the thinks I need to make is a number of waffle trays to hold
>>> various components. One of them is the power inductor for the ModIO
>>> power
>>> supply. I purchase a part reel without the reel and the tape is all
>>> cracked up. Iplan to use some 4mm perspex to mill an array of pockets to
>>> suit the inductor. I'll draw it up in Autocad and use sheetcam to do the
>>> nesting array and produce the G-Code.
>>>
>>> I've had a days training on it, and it is now productive.
>> Great! I was worried that there was a malfuction, but I just
>> had to manually crank the axes into the center of the workspace
>> and then the error condition cleared up.
>>
>> I have a lot to learn on how the board conveyor and work stops
>> are supposed to be used. I don't think it would take too long
>> to get it placing parts, but I don't have any facility for
>> applying the solder paste or reflowing the boards, yet.
>
> The machine comes with a pendant that controls the menu on the RH screen.
> The interface is primitive and similar to a Nokia phone text interface. It
> hakes a while to get used to but is consistant.
>
> Do you have a manual with it? If you have questions I can answer them to
> the best of my limited knowledge.
>
>> What are you doing for that?
>
> I use a mylar laser cut stencil for applying paste. I also have a
> pnuematic paste despenser as well.
>
> For reflowing I use a fanforced toaster oven that I made a temperature
> controller for.
>
>> I see a solder paste dispenser is available, but this machine
>> didn't come with one. (I still have to go through all the boxes
>> of extra stuff, there could be one in there.)
>
> I was told that many have tried unsuccessfully to get the despenser to
> apply paste. It should only be used for adhesive.
>
>> Thanks,
>>
>> Jon
>>
>>
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