What's this screw for? (1964 FP2, Y-axis lock & gauge block bar)

ballen · Aug 13, 2020

Could someone please enlighten me, what's this screw for? It's got a round tip, and in the hole I can see some sort of matching cup. This is on my 1964 FP2. The screw goes into the horizontal bar at the top, parallel to the Y axis, that carries the Y-axis scale (0-200mm), the Y-axis lock, and has a platform for holding gauge blocks for Y axis measurements. In the photo below, you can see the screw hole just above and to the right of the screw tip.

sneebot · Aug 13, 2020

It's a secondary axis lock for the Y axis.

ballen · Aug 13, 2020

sneebot said:
It's a secondary axis lock for the Y axis.

OMG, you are right! I've had the machine for seven years, and didn't know that.

To quote from the original German-language manual for the machine (my translation):

The Y axis lock is via the ball handle 20 (normal rotary lock at the rear of the axis) and for larger chip removal additionally via the socket head screw 14 (indicating the screw in question).

Thank you!

[EDIT: I have tested it, and this does indeed lock the Y axis very solidly. Does it press on the gib, or somewhere else?]

AlfaGTA · Aug 13, 2020

My take is this is there primarily for rigid locking of the "Y" axis when doing "plain horizontal milling" with and arbor an overarm support.

Cheers Ross

thanvg · Aug 14, 2020

Thanks for bringing that up Bruce,

it had been a piece of information that had left my conscious memory I guess only a while after I read about it ages ago. Nice to know it's there

BR,
Thanos

ballen · Aug 14, 2020

It's useful. There are times when I want to lock Y hard, and this is the way to do it.

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What's this screw for? (1964 FP2, Y-axis lock & gauge block bar)

ballen

Diamond

sneebot

Stainless

ballen

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AlfaGTA

Diamond

thanvg

Hot Rolled

ballen

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