Needs Pictures: 0
Results 1 to 15 of 26
Thread: Chuck back plate
-
1st Dec 2019, 06:50 PM #1
Chuck back plate
Lathe 4 jaw chuck rear.jpgThis chuck has been machined with the two surfaces shown by the green arrows, level with each other.
As it is impossible to source a cast iron back plate, or a suitable blank, I have started fabricating one, and I though it might be an idea to cut a few thou relief in the back plate surface, to make one of these two surfaces, the contact surface, rather than have both as contact surfaces, and I am leaning towards the outer.
Good idea, bad idea, doesn't matter??
-
1st Dec 2019, 07:12 PM #2Senior Member
- Join Date
- Nov 2010
- Location
- Frankston south
- Posts
- 102
Not sure how big the chuck is but most of the ones I have seen only use the smaller diameter
-
1st Dec 2019, 07:14 PM #3Most Valued Member
- Join Date
- Jun 2007
- Location
- sydney ( st marys )
- Age
- 64
- Posts
- 4,890
Wouldn't worry about touching the Outside face of the chuck, when the backing plate is made it should have a diameter about an inch bigger than the mounting holes PCD.
-
1st Dec 2019, 07:20 PM #4
Hi Guys,
I agree ! Don't worry about the outer edge. All the support should be in the centre part.
FWIW I've seen a cast iron steam pipe flange used as a chuck backplate !Best Regards:
Baron J.
-
1st Dec 2019, 07:50 PM #5
Well I wish I had asked a question BEFORE I bought and started machining a 210mm diameter piece of carbon steel, based on what the guy that sold me the chuck (200mm chuck) said.
Too late now, so it will be 200mm diam. back plate....too much work to make it smaller, so I'll shave a couple of thou off the outer edge of the plate
BaronJ, the flange would have had to be around 40+mm thick to provide the 24mm snout that goes over the spindle to the register, and even if I could have found on that thick, it would have been a LOT of machining to form the snout.
-
1st Dec 2019, 08:02 PM #6
Hi Phill,
Too late now, so it will be 200mm diam. back plate....too much work to make it smaller, so I'll shave a couple of thou off the outer edge of the plateBest Regards:
Baron J.
-
1st Dec 2019, 08:04 PM #7
-
1st Dec 2019, 08:09 PM #8Most Valued Member
- Join Date
- Jun 2007
- Location
- sydney ( st marys )
- Age
- 64
- Posts
- 4,890
Pity you didn't know what was really required as you could of sourced a piece of cast to suit.
-
1st Dec 2019, 08:38 PM #9
-
19th Dec 2019, 10:56 PM #10
20191219_193924.jpg20191219_193747.jpg
New chuck finally mounted.
In the end I had to machine down the backplate to the smaller diameter simply because when it was assembled the unit was too heavy for me to lift onto the spindle with any control. It took a fair amount of time, and produced two 25 litre bins full of steel wool, but well worth it in the end.
-
20th Dec 2019, 06:17 PM #11Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,195
50 litres of steel wool?
You will have the cleanest pots in Dardanup!
-
20th Dec 2019, 07:42 PM #12
Went straight in the bin. High tensile springs, all with rough edges all knotted together amounts to a real nightmare to clean up.
I tried the vacuum cleaner, blocked the hose in no time, and lots of time to get the damned things out, then a broom, but they clung onto the broom bristles like magnets, so in the end it was pick up by hand and buy a dedicated shed broom for the smaller bits.
In the end I was sooooo glad to see them going down the street in the truck
-
20th Dec 2019, 10:05 PM #13
Hi Phil, Guys,
You need a magnetic wand ! Unfortunately it doesn't do anything for brass or aluminium.
I made mine from magnets salvaged from hard disc drives. Saves a lot of grief blocking up the wife’s vac.Best Regards:
Baron J.
-
21st Dec 2019, 11:09 AM #14
-
21st Dec 2019, 02:12 PM #15Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,668
Chuck back plate
As the priest said to the actress....
Mine is probably bigger than most but take a look:
Outer is 50mm pvc with a cap on the end and a flange about 250mm back from the end
Inner is 40mm pvc pipe with a large magnet stuck in the end
In use you slide the inner all the way down, poke it at your dwarf to pick it up, take it to the bin and withdraw the inner.
Swarf falls off the end or follows the magnet up until it hits the flange and then falls off.
Simple
Steve
Similar Threads
-
Lathe chuck back plate
By naijin in forum METALWORK GENERALReplies: 3Last Post: 30th Aug 2018, 12:35 AM -
hercus ,qualos lathe face plate and chuck back plates
By KBs PensNmore in forum METALWORK - Machinery, Equipment, MARKETReplies: 4Last Post: 7th May 2017, 02:13 PM -
spare D-4 back plate for 8" chuck
By thorens in forum METALWORK GENERALReplies: 4Last Post: 26th Nov 2013, 09:08 PM -
Chuck back plate
By morrisman in forum METALWORK GENERALReplies: 38Last Post: 15th Dec 2011, 07:17 PM -
chuck back plate thread
By tanii51 in forum THE HERCUS AREAReplies: 13Last Post: 10th Jun 2011, 11:36 PM