Needs Pictures: 0
Results 31 to 45 of 50
Thread: Machining setup, thoughts needed
-
20th Sep 2018, 12:38 PM #31Most Valued Member
- Join Date
- Jun 2007
- Location
- sydney ( st marys )
- Age
- 64
- Posts
- 4,890
How much load do you have on your tapered lock nuts ?
Is it possible to also secure the job with a bolt through the leg just in case there is some type of vibration that may cause your locking nuts to come loose.
-
20th Sep 2018, 12:50 PM #32Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,561
Looks good so far (and believe it or not, along the lines of my original (vague) thoughts).
Spider for the free end?
Michael
-
20th Sep 2018, 02:22 PM #33Most Valued Member
- Join Date
- May 2011
- Location
- Murray Bridge S Aust.
- Age
- 71
- Posts
- 5,959
To grow old is mandatory, growing up is optional.
-
20th Sep 2018, 05:27 PM #34Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
Hi Peter
there is a good load but they are more for location and a bit of workholding. I definitely need something to secure it with more rigidity. I like your idea of a bolt through the leg as I was going to run a strap from the flange to the faceplate.
Hi Michael
Yeah, maybe not so vague. The beauty of this jig is that it will work on a milling table (should I ever get one).
A spider is the most secure way though with the gap I'm not sure the steady will still be able to sit on the ways. If it does, I'll have to give it a crack.
-
25th Sep 2018, 09:24 AM #35Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
Hi all
I returned the faceplate to the lathe (removing the insert for the gap was a lot easier this time) and made the necessary adjustments to get the governor to run about as true as it's going to.
Seems there was ample space for the fixed steady so I made a spider up for the support that was needed during machining.
I also did a short video of the governor turning in the lathe in case anyone would like to see it. The counterbalancing worked incredibly well I just wasn't game to run it too fast.
https://www.youtube.com/watch?v=26y8ldW53qs
Phil
20180924_141605 copy.jpg
-
25th Sep 2018, 06:10 PM #36Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,561
Brilliant Phil. I think the spider is a good idea just because you don't want things to move halfway through boring, and being an interupted cut, Murphy is watching carefully.
Michael
-
25th Sep 2018, 11:29 PM #37Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
-
26th Sep 2018, 07:38 AM #38Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,561
One trick I haven't tried but I'm told works (by someone who has talked to someone who has done it...) is sticking a lump of bluetack on the rotating part. This guy was talking about milling cutters but I would have thought it might work on a lathe. The rubbery nature is meant to damp down the tendancy for the metal to ring/ vibrate. Your part is a bit large probably for that trick but I wonder if you used say a worm drive hose clamp to hold some soft rubbery material in contact whether you would get the same effect?
Michael
-
26th Sep 2018, 08:13 AM #39Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
Yep anything to change the harmonics. Years ago on a particular job I put some big elastic bands around a drum roller I was machining and it shut it up beautifully.
Phil
-
26th Sep 2018, 09:28 AM #40
-
2nd Jul 2019, 09:59 AM #41Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
Wow, over 8 months since my last post.
I managed to machine the outrigger arm successfully which after reaming to final size, I finally had a decent bore to work with.
Next bit was the bush for the outrigger arm.
I will point out (and you know I'm going to always bang on about this) that there was no Loctite used but the 'Limits Fits and Tolerances chart got a decent work out. I figure if it can hold together for over a hundred years without Loctite, then it will again.
Phil
20190628_143817 copy.jpg 20190628_121349 copy.jpg 20190701_140206 copy.jpg 20190701_084824 copy.jpg 20190701_092727 copy.jpg 20190701_131909 copy.jpg 20190701_132058 copy.jpg 20190701_142043 copy.jpg 20190701_142048 copy.jpg 20190701_132705 copy.jpg
-
2nd Jul 2019, 09:25 PM #42Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,561
Well done Phil. I re-read the whole thread (twice) to get my head back around what you were doing, but it looks like you have nailed it.
Does this mean that Ballarat is now the world-wide centre for Pickering rebores?
Michael
-
2nd Jul 2019, 11:34 PM #43Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
-
3rd Jul 2019, 11:10 AM #44
-
4th Jul 2019, 09:39 AM #45Most Valued Member
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 3,103
Thanks Ray but you are being too kind.
This bit shows the repair to the taper pin in the bevel gear that goes on the shaft in the outrigger arm and the vein opening error I made.
Phil
20190702_121823 copy.jpg 20190702_121842 copy.jpg 20190702_123139 copy.jpg 20190702_123547 copy.jpg 20190702_141243 copy.jpg 20190702_141319 copy.jpg 20190702_142033 copy.jpg 20190702_143356 copy.jpg 20190703_125710 copy.jpg 20190703_130409 copy.jpg 20190703_130551 copy.jpg 20190703_140909 copy.jpg 20190703_141904 copy.jpg 20190703_141828 copy.jpg
Similar Threads
-
Machining job needed - any takers?
By Clinton1 in forum METALWORK GENERALReplies: 4Last Post: 3rd Jun 2013, 08:41 PM -
Urgent machining job needed in perth.
By lather in forum METALWORK GENERALReplies: 2Last Post: 22nd Feb 2012, 07:08 PM -
aluminium machining advice needed
By horse in forum METALWORK GENERALReplies: 1Last Post: 12th Jan 2010, 02:10 PM -
Hercus 260ATM Install & Initial Setup Details Needed
By jackafrica in forum THE HERCUS AREAReplies: 10Last Post: 28th Sep 2009, 07:34 PM -
Machining Needed in Sydney - low volume/prototype
By missionaryman in forum METALWORK GENERALReplies: 5Last Post: 29th Jan 2006, 08:01 PM