Roland MDX-40A 3D Scanning Unit ZSC-1
The ZSC-1 Scanning Unit is included with the MDX-15/20 machine and is an option on the MDX-40A.
This was written for the MDX-40A but applies also to the MDX-15/20.
3D Scanning Unit
The addition of the ZSC-1 Scanning Probe will give the MDX-40A the ability to scan objects using the large flat table.
The ZSC-1 accomplishes scanning by using a small touch probe that goes back and forth across your model collecting points. The touch probe can touch hard objects like a plastic as well as soft objects like a strawberry very accurately. Its ability to detect and stop at the surface of very soft objects allows you to scan a variety of objects that could not be scanned by any other touch probe scanners.
The included DR. Picza 3 software is used to setup the scanning area. The Software and scanner operate very similar to a paper based flat bed scanner. When you set up your scanning in the Dr.Picza software you set an area that the scanner will scan. The table on the MDX-40A is laid out as a grid in the software and you draw a rectangle around the area you want scanned, you then tell the software where the approximate highest point is on the platform. The final setting is to tell the software how far apart it will collect each point, we call this pitch. The touch probe scanner can collect points at .002 inches apart, which is half the thickness of a piece of paper. There is no doubt that this level of detail is not required for most projects, but is there and available if needed. The tradeoff is the time it takes to scan since the machine will be collecting every point in the grid then it takes much longer with the higher detail. Dr Picza also has a automatic find feature so it can locate the object and set the parameters for scanning much like the preview mode on the flatbed scanner then you just let it know the resolution.
We are often asked how long it takes to do a scan, this is based on how big the object is and what pitch you set up. For every pitch setting you double the amount of points the machine has to collect which in turn almost doubles the number of points. We typically setup our scans to run over night and that gives the machine plenty of time to do the scan, there have been cases where we scanned a large item 8"x8"at the highest pitch and it took 30 hours, again this has to do with pitch and size.
To prepare the MDX-40A for scanning you will turn off the machine and remove the spindle and swap it out with the ZSC-1 scanning head. There is a hidden port that you plug the scanning head into that lets the machine know you will now be operating in scanning mode. You simply turn your machine back on and the MDX-40A is ready to start scanning.
The MDX-40A and ZSC-1 touchprobe scanner currently does not work with the rotary axis unit, it will only work with the rotary axis unit unplugged.
Compare to Laser Scanners
The ZSC-1 accomplishes scanning by using a small touch probe that goes back and forth across your model collecting points. When you compare the touch probe to a laser scanner you find that this is advantageous over the laser scanner because it actually touches the part, the laser scanner never touches the part so it is limited to the quality of the surface it is scanning as well as the reflective properties. The part you are touch probe scanning will not require you to prep it in any way.
Another advantage the touch probe has over the laser scanners is its ability to collect points at a closer pitch. The pitch is how far a part the scanner touches or takes a measurement. Look at the edge of a sheet of paper, the typical thickness is .004 in. So imagine on the edge of the piece of paper that the scanner collects 3 points one on the top edge, one on the middle and one on the bottom edge. That is a very small increment between the middle and the edges but that is the level of detail that the touch probe is able to collect. On the Roland laser scanners the min pitch is .008 or you can put 2 pieces of paper together and the distance from the top to the bottom edge. For most projects that detail is more then you would need but in the event that you have a really small feature with high detail the touch probe will be able to accomplish the task.
Product Description written by Product Development Inc