Thread: Floating Tap Holder.
Hybrid View
-
23-01-2018 #1
I have been trying to find a floating tap holder using ER collects and R8 shank. No luck.
All I can find are ISO or MT shanks.
How do these work? How does the tap (or reamer) float?
Could I just make one?
Will
-
23-01-2018 #2
I am not sure exactly what you want to do, but ArcEuro sell a set of sliding tap and die holders.
http://www.arceurotrade.co.uk/Catalo...ilstock-Turret
Then you would need to machine an R8 soft end to 16mm to hold it. This is a lathe accessory though and I can't imagine it being used in a milling machine quill.
-
23-01-2018 #3
I'm sure you could make a floating tap holder, it just needs to be spring loaded up and down so it floats in a central position but allows free movement for Z synch error on a mill without rigid tapping capability, then add a way to hold a tap.
Splines or a cross-pin can be used to provide drive whilst allowing vertical float.You think that's too expensive? You're not a Model Engineer are you? :D
-
23-01-2018 #4
If your mill doesn't support rigid tapping is Thread Milling an option for you?
You think that's too expensive? You're not a Model Engineer are you? :D
-
24-01-2018 #5
These pcm collets hold taps and are sprung loaded, they are available in the whole range of er sizes.
You can buy them from wnt but they are quite pricey, I found a few er25 on ebay that I use on my Denford triac. If you buy the largest diameter you can find you can make sleeves to hold smaller taps.
https://www.pcm.ch/en/products/tapping-collets
-
24-01-2018 #6
Cutwel also sell them if this is suitable for you...
https://www.cutwel.co.uk/tool-holdin...h-compensation
-
24-01-2018 #7
Thanks James but have you seen the price!! Over 100 per tap size. There are tapping collets available (Standard ER collects with a squarenhole at end to fit specific taps) at about a quarter of the price. Trouble is the collet holders are not available in R8. Question still is how do springs allow the tap (held rigidly by the collet) to float in the holder.
They have to be able to float in all 3 axes but still apply torque to the tap?
How are these floating holder designed?
-
24-01-2018 #8
@magicniner: I am only tapping up to say M10 so no need to thread mill
-
24-01-2018 #9
I Thread Mill down to M3, some things I make require a full thread right down to a shoulder, this has internal and external full threads to shoulders.
Internal and large external are both 1mm pitch and so were cut with one thread mill, if you are only tapping bolt holes milling may be overkill but it also allows you to produce any class of thread with one tool, unlike taps. ;-)You think that's too expensive? You're not a Model Engineer are you? :D
-
The Following User Says Thank You to magicniner For This Useful Post:
-
12-04-2018 #10
Floating tap holders, aka Tension/Compression Tap Holders are the perfect solution when you need to tap a hole. Bridging the synchronization gap between toolhodler and Z-axis feed, the spring mechanism compensates for the minute acceleration.
Factory Automation
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Knife holder
By eurikain in forum Woodworking Project ShowcaseReplies: 6Last Post: 25-08-2016, 11:30 PM -
Floating Head for 3020
By iBeta in forum Chinese MachinesReplies: 6Last Post: 29-02-2016, 10:31 PM -
I want to adapt 4x4 CNC for plasma. Do I need a floating head or THC?
By marbles in forum Plasma Table MachinesReplies: 3Last Post: 28-11-2015, 08:07 PM -
Plasma floating head...
By Davek0974 in forum Plasma Table MachinesReplies: 27Last Post: 01-01-2015, 01:52 PM -
Driving floating end (ballscrew)
By blackburn mark in forum Lead Screws, Nuts & SupportsReplies: 16Last Post: 11-09-2010, 11:55 AM
Bookmarks