1982 Matsuura MC-500v Retrofit

While working on finishing the I/O. I have been thinking about the classic ladder for my ATC.

Sequence:

M6 T# called out
Z axis goes to change position (switches are located to detect if it is at position)
Spindle orientates
tool magazine moves in
Tool releases
Tool magazine moves down
Tool magazine rotates CW or CCW to the called tool
(Need to check if there is a air blast to clear the taper and chips before mag moves up)
Magazine moves up
Tool clamps
Magazine moves away

Machine goes back to work......

There are limit switches for

Mag in + out
Tool 1
Z axis tool change position
Mag up and down

Need to figure out how to use classic ladder to make this. I have never used CL before so this will be an interesting experience.

Almost finished with the wiring for all of the I/O. Down to my last 4 outputs on the 7i77 and if all goes well I will have exactly enough to complete the wiring. Inputs are not even close to being used up. (May need to by an additional output board)

Ran across two contacts that go up the tool change assembly. There are already two that go there so I am trying to figure out what those additional two would be used for?

The tool change assembly works (mag in , mag out, rotate cw, rotate ccw)so not sure why they second contacts. My guess is since one goes to magazine forward/reverse and the other goes to magazine cw/ccw is that they are brakes of some sort.

I will have to given them a trigger while rotating the tool changer and see if a brake is applied to dead stop the rotation. This would make sense to me as if I rotate the tool change now it seems to not always line up correctly. Seems to have a little free spin as the motor coast to stop.

I will update more about this later today or tomorrow.

Yes - probably the brakes. I had to do some funky stuff to get that to work in ladder. IIRC - I run the motor until it hits the limit - then apply the brake relay while the motor is still on for a short amount of time (power needs to be applied to the motor for the brake to work). Then both the motor and brake is turned off. (They motors get pretty hot if you leave the brake and motor on)

Both motors act the same (rotation and in-out)

sam

Nice write-up! Will be interesting to follow the classicladder part!

Cheers from Sweden

This is where the limits and connections are located for the ATC. (Pardon the mess. Previous owner must not liked to clean)

Draw bar limits



Tool magazine up and down limits



Tool magazine in and out limits



Connection points for the tool magazine CW and CCW. The limits are under the magazine



Junction box for all tool magazine limits, power, and goofy light. Also note the pneumatic valve for magazine down



Pneumatic valves for draw bar and taper clean out



That's all the updates I have for tonight. Hope to dive into the last (4) I/O connections tomorrow night and then start on the classic ladder.

Good Day chopper79,

Thanks for sharing your experience and description of your Matsuura mill refit.
This knowledge will be invaluable when I refit my matsuura vertical mill.
Cheers john