Some questions about a Collet Chuck

Some questions about a Collet Chuck

This topic has 6 replies, 5 voices, and was last updated 5 December 2018 at 21:15 by Michael Gilligan.

Viewing 7 posts - 1 through 7 (of 7 total)

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4 December 2018 at 21:17 #383862
Chris1234
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@chris1234
Evening,

I have to build a machine that cuts slots in something.

It needs to cut a number of slots at the same time.

My plan is to use several collet holders in bearings mounted into a platform, they would all be belt / chain driven.

I'm wondering if the shaft on the collet holder below would press straight into a bearing or would it be a loose fit?

Thanks.

https://www.rdgtools.co.uk/acatalog/20MM-STRAIGHT-SHANK-COLLET-CHUCK-ER32-1268.html
Advert

4 December 2018 at 21:17 #26326
Chris1234
Participant
@chris1234
5 December 2018 at 15:19 #383992
Martin Connelly
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@martinconnelly55370
I have an ER32 and a smaller ER11 (I think) with nominal Ø16 shanks. As far as I can measure without a temperature controlled workshop and un-calibrated mics and Vernier callipers (real Vernier, not digital) they are parallel and consistently Ø15.98. However I may just have been lucky and some out there may be a bit more variable.

Martin C
5 December 2018 at 16:41 #384014
HOWARDT
Participant
@howardt
Can’t you use a single spindle and arbor to gang mill the slots or do you have to use slot drills.
5 December 2018 at 17:56 #384030
IanT
Participant
@iant
Sounds a little bit like gang milling on a horizontal mill…?

IanT
5 December 2018 at 19:11 #384043
Chris1234
Participant
@chris1234
Hi, thanks for the replies, the shape of the slots needs to be as an endmill would make them, an extended circle. ie. two parallel sides and a radius at each end. So I can't use a single spindle unfortunately.

I will order some collet holders tomorrow and try them, if they are not press fit then I will use bearing with grub screw (RA?).

Thanks for your help.
5 December 2018 at 21:15 #384062
Michael Gilligan
Participant
@michaelgilligan61133
Posted by Chris1234 on 05/12/2018 19:11:06:

I will order some collet holders tomorrow and try them, if they are not press fit then I will use bearing with grub screw (RA?).

.

Loctite 'Bearing Fit' would [in my opinion] do a better job than a grub screw.

MichaelG.
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