I'm interested in camera recognition of fiducial marks on printed circuit boards as well as an upward looking camera to determine orientation of SMT components when picked with a vacuum head. This can be applied to stencil printers, solder paste printers, SMT pick-and-places, etc.
The SMT pick-and-place I have is made pretty well except the implementation could have been better. The XY servos are brushless DC Sanmotion drives by Sanyo and there are 12 steppers and stepper drivers on the main pick-and-place head. When the carriage whips around it puts stress on the cabling between the stepper drivers and steppers. The manufacturer used hot melt glue as a strain relief for the cable wires. Doesn't work too well. I have had to repair wire crimps a number of times. The manufacturer also did not have a proper pin crimper - looks like they used a pliers. Aside from some implementation issues like this it isn't too bad of a machine. If I had the time I would rewrite the application as it could use some refining. The biggest thing stopping me is the fire wire cameras and recognition routines. It's rated at 14,000 components/hour but I run it slower to keep it reliable. Dennis > -------Original Message------- > From: Ralph Stirling <[email protected]> > To: Enhanced Machine Controller (EMC) <[email protected]> > Subject: Re: [Emc-users] Rotate Workpiece Coordinate System? > Sent: Jul 03 '12 17:10 > > I had some success with using a USB microscope and the python > opencv libraries. I was looking for the center of a circle of specific > diameter and calculated the distance from this found center to > the desired position, then moved by that distance to home the axis. > It was a fairly quick-and-dirty test I did, but I was quite encouraged > by the results. > > -- Ralph ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
