Member postings for Michael Gilligan

All sorted now ... Panic over

MichaelG.

Can somebody [perhaps a moderator] please help me here ?

I clicked on ‘Message member’ and sent a note to IanT

... but received the following reply:

[quote]

[/quote]

Surely we can’t have two members with the same account !!

MichaelG.

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Ian

if you eMail the .png to me, I can easily convert it to .jpg and post it here

I will send you a PM with my address

MichaelG.

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My apologies, Bob

... at the price quoted, I wrongly assumed that it was a Gates timing belt you were breaking.

Please ignore my input.

MichaelG.

This [from the horse’s mouth] might help, Bob : **LINK**

https://www.gatestechzone.com/en/problem-diagnosis/synchronous-drive-system

MichaelG.

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I would be grateful if you could explain that, Dave [my emboldening]

My little brain is screaming “Does not Compute”
... but perhaps it is thinking of saw blades

MichaelG.

Thanks for that, Lainchy ... I’ve already ordered some, anyway.

MichaelG.

Digressing slightly: When I worked in the vibration test lab, we used cap-head screws down deep counterbores in the alloy ‘head expanders’ on the shakers. ... These were always used with properly engineered thick plain washers [which I believe to be a standard commercial product].

MichaelG.

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Edit: The general style is shown in the second image on this page

https://www.engineersedge.com/iso_flat_washer.htm

... but we typically used M8

Edited By Michael Gilligan on 19/11/2019 08:34:44

I’m bewildered, Phil

Is this the vice to which you refer ? : **LINK** ?

https://www.arceurotrade.co.uk/Catalogue/Workholding/Machine-Vices/Precision-Tool-Vices-Type-2

... if so, it would appear that all you need is a thicker [and/or better fitting] washer under the screw-head.

MichaelG.

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Edited By Michael Gilligan on 19/11/2019 08:14:10

Excellent logic, Sir

MichaelG.

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P.S. I just looked back at your first post [in 2014] and note that the link appears to be dead

In the spirit of what you have done on this thread ... is the resource still available ?

Edited By Michael Gilligan on 19/11/2019 07:38:05

.

That sounds very promising ... Thanks for the reference.

I realise that this is a rather subjective question, but:

How durable would you say it is ?

MichaelG.

Nice demonstration, Andrew ... Results as expected.

The only ‘question’ is: How likely is it that, in any foreseeable circumstances on a machine tool, the whole joint would get temperature-soaked to 300°C ?

MichaelG.

No problem, Nick

It was the ‘No fix, No fee’ offering that first attracted me.

i’ve never had cause to use them, but assume that you have.

MichaelG.

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Mmm ... deja vu

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You’re welcome, Gary

Here is the window that you should be seeing [grabbed on the iPad just now]
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If any of those documents would help ... Please send me a P.M. with your eMail address and I’ll try downloading them for you.

MichaelG.

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But a BSF chaser would be reasonably agnostic regarding diameter.

MichaelG.

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P.S. ... I must echo Ian’s congratulations !!

Not sure [because it’s way out of my league] ... but I think everything you need to know is in here:

**LINK**

http://210.61.79.108/i/fb/333/01.pdf

MichaelG.

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But there’s more available here: http://www.ctek.com.tw/EN/Download.htm

Edited By Michael Gilligan on 17/11/2019 11:09:07

Gary,

This page mentions C-Tek **LINK**

https://www.tphmachinetools.co.uk/products/1399-new-powercentre-km80

... is that any help ?

MichaelG.

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http://www.ctek.com.tw/EN/company.htm

Edited By Michael Gilligan on 17/11/2019 10:26:07

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Intrigued by that revelation, I found this document: **LINK**

https://www.mitutoyo.com/wp-content/uploads/2016/08/H-section.pdf

Which incidentally includes this gem, on page H-15

*1: The exact value is 0.0048828125μm since the 20μm signal is divided by 4096.

Humbling, is it not ?

MichaelG.

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Edit: If all else fails, it might be worth trying here

https://www.gtprecision.co.uk/digital-readout-systems.php

Edited By Michael Gilligan on 16/11/2019 22:31:00

Alan,

Bob gives good advice

The 6mm, 8mm and 10mm sizes are most common, although I do have one [Boley design] with 6.5mm collets.

In all cases the measurement refers to the body diameter of the collets.

Numbers on the front of the collet refer to the bore, in tenths of a millimetre.

Beware though, there are many different threads for the draw-tube.

MichaelG.

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The tabulation on this page was published in several books, and remains a useful reference:

http://www.lathes.co.uk/collets/

Edited By Michael Gilligan on 16/11/2019 22:14:56