Thanks: 0
Likes: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 11 of 11
Thread: Radii and a DRO on Mill
-
23rd December 2013, 06:10 PM #1Intermediate Member
- Join Date
- Apr 2011
- Location
- Mandurah, WA
- Posts
- 40
Radii and a DRO on Mill
I am working on a project which calls for a fair bit of radius cutting: 1.5R, 3R, 6R, 5.5R etc.
OK, I am not 100% sure what all this means,I imagine the 3R for example, means the radius is 3mm 'deep'.
I do have a X Y DRO on the mill, a HM-46, the DRO has a radius function but I am unable to get the radius correct. It is a generic DRO of eBay.
Can anyone shed some light on setting the DRO and milling cutter for a 3R radius that has an arc of 75mm as an example?
appreciate any advise.
Merry Christmas to all.
Mike.
-
23rd December 2013 06:10 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
23rd December 2013, 09:07 PM #2Intermediate Member
- Join Date
- Apr 2009
- Location
- Tas
- Age
- 66
- Posts
- 40
Radius Function with the ShumaTech DRO-550 - YouTube Does his help?
Also is the 1R , 1.5R etc. refer to tool radius?
-
23rd December 2013, 10:39 PM #3
Just to get me on the right track, do you want to cut a radius with a round over cutter?
That would give you say a 75mm radius on the x an y side and a 3mm between the side and top.
DaveUsing Tapatalk
-
23rd December 2013, 11:28 PM #4Intermediate Member
- Join Date
- Apr 2011
- Location
- Mandurah, WA
- Posts
- 40
Thanks Driftabout, that vid has helped me out mate. Still need to work out this 5R, 1.5R 7R business though. I thought it was to do with the depth, from the side, of the radius. Now I don't think this is correct.
Can anyone explain in layman terms what say, 5R n a drawing means? I need to put a radius on the side of a work piece, only need to use the X and Y movements. It is in 2D if that helps.
Mike
-
24th December 2013, 08:58 AM #5
I am really not sure about your drawings but the smaller the tool will make finishing easier but take longer to do.
Can you put up a picture of part of the plan.
I have used this feature a few times but just dont understand what the drawing is asking for.
DaveUsing Tapatalk
-
24th December 2013, 10:11 AM #6GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,775
Dont you need a DRO on the Z axis to this?
-
24th December 2013, 12:01 PM #7Senior Member
- Join Date
- Feb 2013
- Location
- Laidley, SE Qld
- Posts
- 368
When I see 6R I take it that the job has a curve of radius 6mm. Presumably you are talking external features here, for internal features of course you would use a 12mm drill to give you an internal 6mm radius.
External radii are best done on a rotary table, but if that is not an option the XY radius cutting feature built into your DRO will get you close. The radius will need filing afterwards to smooth out the little steps. You will be able to nominate the size of the increments in the DRO, so set them as fine as your patience will allow.
I'd be tempted to practice on scrap before tackling the actual job.
-
24th December 2013, 12:05 PM #8
-
24th December 2013, 12:10 PM #9GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,775
If you're looking to machine the radius with the Z axis. I'd just use PCD(mainly coz I know how to do that hehe)
Pictures would help
Also for the smaller radii(radiuses) I'd think you'd be better off with a form cutter.(although that wont work in Z)
Stuart
-
24th December 2013, 12:11 PM #10
Just to add to what Bob said,use the biggest end mill you have to help smooth out the steps.
I think it is George? Over on home machinist building the motors and gear boxes to scale, he shows the results of this DRO feature and the files amd sands to finish.
I have used this feature and it's slow going.
DaveUsing Tapatalk
-
24th December 2013, 12:12 PM #11GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,775
Similar Threads
-
combination circular saw blade for saw mill (lucas mill)
By Tim Creeper in forum SMALL TIMBER MILLINGReplies: 17Last Post: 26th April 2013, 12:48 PM -
Selecting a small Mill / Mill/Drill
By Wombat200 in forum METALWORK FORUMReplies: 31Last Post: 15th March 2012, 10:58 PM -
Arboga EM825 mill vs Hercus model 0 mill?
By neksmerj in forum METALWORK FORUMReplies: 23Last Post: 14th May 2011, 03:16 PM -
No. 0 Mill Serial Number and Mill at Work Photos
By Anorak Bob in forum THE HERCUS AREAReplies: 1Last Post: 30th December 2008, 03:31 AM -
Comparison Between C.S Mill & Bandsaw Mill
By echnidna in forum SMALL TIMBER MILLINGReplies: 2Last Post: 7th October 2007, 04:26 PM