file Frage ATC problem

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06 Aug 2019 11:28 #57146 von Gregoire
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Hello,
I have an automatic tool changer (Item number: 10012) mounted on a spindle AMB 800 FME.
It is connected to a compressor (6 to 8 bars) and controlled by a 5/2 distributor (the air is ejected when the air is shut off)
I used it a few times.
Sometimes the ER11 clamp is stuck when I send air.
The only way to remove the tool holder is to force it by hand or with a screwdriver.
I added an air filter and an ISO VG32 oil for the lubrication at the outlet of the compressor, but the same result.
I do not use stepcraft support for the ER11 collie, but I made a support in wood with holes of 20 mm. The ER11 collar is dropped in a hole at 10 mm from the support.
When it is stuck, I tried without support under it, same result.
For now, I have never machined parts with spindle, so there is no dust in it.
Do you have an explanation why he stays stuck?
Does it need to be greased?
Thank you.

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06 Aug 2019 16:07 #57150 von Rahul
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Hi,
I got only the HF500-ATC and had the same problem.
It became better after cleaning both the collet's cone and the tool holder on teh ATC side.
I used an industrial detergent for cleaning brakes (in german it is called "Bremsenreinger").
It removes dirt and oily coating.

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06 Aug 2019 16:51 #57153 von Gregoire
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Hi,
Thanks for reference for cleaning ATC.
When we looking at the ER11 support of stepcraft, the entry of the ER11 clamp is done on the side.
But when we draw back the spindle, it is possible that ER11 is maintained by the support and that the spindle goes up, so it may need a force which hold the ER11.
And when ER11 is very clean it step-down whit out any force
Can anyone confirm this?
Thank you.

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