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Laser Displacement Sensor Using Issue

Eva713

Member
Hi all,
Is anybody have a lead on a laser displacement sensor with a range of 100mm or so that can trigger a digital output when it encounters a rapid change in distance?

I have a CNC Router type machine that needs to find the edge of material that is set on the table quickly. I am hoping I can mount the sensor adjacent to the Z-Axis and just scan both edges of the material at either end of the table and trigger an output that I can use to capture the position and use this to automatically adjust G54 offsets.

The machine is an 8 x 12 table that will process rolls of conveyor belting and I don't want to have to worry about belt tracking so I am planning on scanning the belt location on the table after each 10 foot index.

Preferably I could fly the laser over the belt and send a digital output to the laser to learn that position and then fly it over the bare table and learn that position and then have it fire a digital output such that it is High when over the belt and Low when over the table . . . (and fast output response time as in tens or hundreds of usec) . . . anything beyond a msec and we will not be able to go fast enough to keep our cycle time down.

Best Regard.
 
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