Author Topic: Countersink in the Anchorplate  (Read 7212 times)

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Offline [DE] Heinz Wildgrube

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Countersink in the Anchorplate
« on: November 23, 2012, 03:02:37 AM »
Hello Coupling Group,

Please feel free to have a look to your anchoring1.pdf (see attachment).

As far as I can see you want us to use a M4 counter sunk screw DIN EN ISO 10642 (former DIN 7991) to fix the plate.

According to DIN 74 - F4 the diameter of the countersink should be 9.2 mm - but you told us 7.5 mm in the drawing  :-\

Could you please explain the difference to us to provide mistakes?

Thanks a lot!

Many greetings
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Heinz Wildgrube
CNC Network Coordinator
BBS TGHS Bad Kreuznach
Germany

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« Last Edit: November 23, 2012, 03:40:19 AM by [DE] Heinz Wildgrube »

Offline [AT STP] Mike Fahrafellner

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Re: Countersink in the Anchorplate
« Reply #1 on: November 23, 2012, 01:21:20 PM »
Hello,

I see what you have meant. We decided to make this 7,5mm to have a buffer to adapt the countersink to the screws.
Thatīs because we didnīt set a special screw. Every school is asked to take the screws mostly fit for them.

Many greetings!

Offline [DE] Heinz Wildgrube

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Re: Countersink in the Anchorplate
« Reply #2 on: November 24, 2012, 01:04:52 AM »
Hello Coupling Group,
Hello Mike,

It's not very clever to let the specification free for every partnerschool. And if we would like to adapt the countersink to the individual screws we should note that in the drawings, because otherwise the partnerschools will produce the parts with the dimension you tell us in the drawings.

Please think about: the "European Airbus Principle" will not work in case you don't define the specification of all parts - and this means also the dimensions of every little screw!

In my opinion it is very important to know the specification of all parts, because we should create a total part list of all parts we need for the undercarriage. This is a usual procedure which is also standard in industrial production.

As you may know every school in Europe (also the onces who are not involved in this project) should be able to copy our project and therefor they need the exact specification.

So again, please think about the specification.

Thanks a lot!

Many greetings
--
Heinz Wildgrube
CNC Network Coordinator
BBS TGHS Bad Kreuznach
Germany

News at:
http://www.cnc-network.eu
« Last Edit: November 25, 2012, 10:02:30 PM by [DE] Heinz Wildgrube »