Thread: VMC300 Toolholder question
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14-12-2016 #1
Ok, I`m stuck here.
Looking at my toolholders for my VMC300, there`s a difference between them, and the toolholders at Coventry Toolholders.
(http://www.coveng.co.uk/group/covent...sy-change.html)
Mine has a machined groove in the top flange, and i do believe for my ATC holder(spring loaded fork). Se Attached Picture.
However the toolholders at Coventry has not :-\
Looking at the video on youtube, it seems they have 2 types. One With just the 2 notches on each side, and one With additional groove for a ATC Version With spring loaded fork.
Am i completely off track here, or is my assumption correct ?
Are there any drawings in some far away corner of the internet on these toolholders if i would make them myself ?
I could of course make my own drawing and plot it in.
They are a bit expencive if you need say more than 5-10pcs ER32 Easy Change Collet Chucks..
Any advice gents ?
Last edited by Proteus; 14-12-2016 at 11:21 PM. Reason: Forgot attachement
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15-12-2016 #2
Have you got any pictures of an existing tool holder?
I'm not aware that Coventry ever made anything suitable for an ATC, and I'd guess the ATC uses a more standard taper. A good list of standards with dimensions can be found at http://www.tools-n-gizmos.com/specs/Tapers.htmlAvoiding the rubbish customer service from AluminiumWarehouse since July '13.
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18-12-2016 #3
Don`t know if Coventry Toolholders is the correct one, but i do beleive to remember that name from another post somewhere here in the forum.
Took a Picture of it, and measured som of the Critical parts.
By the way i took a lokk at the link you gave me, but could not find anything even Close to it.
Maybe my Pictures could explain better, or hopefully somebody recognizes the holder...
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18-12-2016 #4
Looks like a compact version of a BT30 holder, with a pretty standard pull stud on top.
If my maths is correct, given the height on your photo, the diameter of the top would be about 22mm?
Unfortunately that means it's most likely a custom holder, so getting more will not be straightforward.Avoiding the rubbish customer service from AluminiumWarehouse since July '13.
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18-12-2016 #5
Yes m_c it does, but the closest i can find is the Easychange toolholder from Coventry.
The diameter on top is 22mm, and yes i think it`s a standard pull stud.
There`s 2 ways i can solve this. One is to send my measurements to Coventry Toolholders for confirmation and ask if they have the Version with the groove in the top flange.
And if the dimensions are the same but without the groove, it should be fairly simple to fix that with my lathe.
The second solution is to make them myself in the lathe. but that one is manual so far(which will produce a lot work work).
I got a bunch of the standard endmill holders with sidelock that i could sell out since i like the onces for collet chucks better.
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18-12-2016 #6
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