Carousel component- feature request. Please help andypugh!

Hi

I am retrofitting a Mitsui Seiki HR5 machining centre.

The ATC use 2 proximity sensors labeled A and B and an additional reference proxy for homing. The A and B proxy's switch on and off by reading the same trigger plate on the ATC chain in such a way that it produces a quadrature signal when the ATC rotates. The (any) tool pocket is in the correct position when both A and B signals are on. Rotating slightly fwd or backw, causes either one of these two signals to go off.

Problem. The carousel comp encoding schemes currently available does not cater for this. The closest match is Index mode. I got it working by using only the A signal and the reference signal in index encoding mode. This is working but I had to add some logic when the ATC rotates in reverse because it stops slightly out of position due to approaching the striker from the other side.

Not sure what will be the easiest solution here?

Maybe the the easiest would be to and2 the and B signals and use that instead of only A?

Or maybe add this encoding scheme to the comp?

Video here

Advice is always appreciated.

Hi Tommy
I am going to try that. Concern is that it will overshoot the position. Not sure what will happen in that case....try and see....

Henk wrote:

Hi

I am retrofitting a Mitsui Seiki HR5 machining centre.

The ATC use 2 proximity sensors labeled A and B and an additional reference for homing. The A and B proxy's switch on and off by reading the same trigger plate on the ATC chain in such a way that it produces a quadrature signal when the ATC rotates. The (any) tool pocket is in the correct position when both A and B signals are on. Rotating slightly fwd or backw, causes either one of these two signals to go off.

Problem. The carousel comp encoding schemes currently available does not cater for this. The closest match is Index mode. I got it working by using only the A signal and the reference signal in index encoding mode. This is working but I had to add some logic when the ATC rotates in reverse because it stops slightly out of position due to approaching the striker from the other side.

Not sure what will be the easiest solution here?

Maybe the the easiest would be to and2 the and B signals and use that instead of only A?

Or maybe add this encoding scheme to the comp?

Video here

Advice is always appreciated.

My husband had the same problem, did you find a solution?