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Author Topic: Hood's 12 tool tool changer  (Read 4975 times)

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Offline Hood

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Re: Hood's 12 tool tool changer
« Reply #10 on: January 07, 2015, 03:51:28 AM »
Russ, the original Curvic was actually 24 teeth, its the Hirth that is 48. Same thing applies though, no way of getting 10 positions from the curvic without making an offset tool plate.
Hood
Re: Hood's 12 tool tool changer
« Reply #11 on: January 07, 2015, 04:42:53 AM »
Thanks hood .
So i suppose you let a piston move the one away fron the other- then let the servo index and then
reclamp to the new position?
think of the trees-- use both sides of the computer paper

Offline Hood

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Re: Hood's 12 tool tool changer
« Reply #12 on: January 07, 2015, 05:41:06 AM »
Yes Fred, hydraulic cylinder pushes the whole plate with half coupling forward to disengage then rotates and clamps once there.
You obviously need some means of having the shaft move without the motor or pulley or whatever also moving. On my first turret I had a splined section  in the middle  of the shaft and the pulley was splined. On this one I have a splined section of shaft bolted onto the end of the shaft and use a splined bush on the end of the gearbox.
The gearbox is planetary box, so inline, with a 25:1 reduction. That way I can use a smallish servo to rotate it.

Hood
Re: Hood's 12 tool tool changer
« Reply #13 on: January 07, 2015, 07:09:17 AM »
Scots engineering at its most innovative
regards

fred
think of the trees-- use both sides of the computer paper

Offline Hood

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Re: Hood's 12 tool tool changer
« Reply #14 on: January 07, 2015, 05:26:43 PM »
Ha ha Fred, I think all these ideas were worked out long before I did them :)

Hood
Re: Hood's 12 tool tool changer
« Reply #15 on: August 14, 2015, 07:33:33 AM »
I recently got a lathe almost the same as the one Hood made the turret for.    I would sure like to copy hoods design, its the best I have seen yet for a DIY. 

Are any further details on the turret available?    I wonder about what was used for main shaft bearings that allowed the shaft to both rotate and slide for unlocking.   Details on how the coolant passages were done is also a mystery.

Hood,  any chance you still have some of this info?    I would sure like to make my own !

Thanks much!
George

Offline Hood

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Re: Hood's 12 tool tool changer
« Reply #16 on: August 19, 2015, 02:23:25 PM »
The VDI info/specs are available online, I just did a google for it.

I think most of the other info you asked is in this thread,
http://www.machsupport.com/forum/index.php/topic,22080.msg201728.html#msg201728

Hood
Re: Hood's 12 tool tool changer
« Reply #17 on: August 19, 2015, 08:30:28 PM »
Thanks Hood.   I thought I had read everything related to your turret but I never found all that info in the BT30 thread.