Needs Pictures: 0
Results 1 to 11 of 11
-
7th Jan 2020, 02:08 PM #1Member
- Join Date
- Nov 2018
- Location
- Tasmania
- Posts
- 97
Surface Grinder Travel Less than Mag Chuck
I've recently picked up a Kent KGS-200 Surface grinder
I need to resurface the mag chuck, but I had a look and the chuck is slightly longer than the overall table travel.
This will mean I get high points at each end. Not ideal
Unless anyone's got a better idea, I'm thinking of repositioning the chuck on the table so I can fully traverse to one end, grind that end slightly lower than required. Then shift the chuck and do the same at the other end.
After this I would recentre the chuck and surface the now full traversable surface between the ends.
Any better ideas?
20200107_135534.jpg
IMG_20191223_150343.jpg
IMG_20191223_150353.jpg
-
7th Jan 2020, 05:25 PM #2Novice
- Join Date
- Sep 2014
- Location
- Elimbah Qld
- Posts
- 24
If the chuck is longer than the travel I'd under cut the back only first then move the chuck so the full travel is achieved an able to put a fence up at the front that isn't under cut
-
7th Jan 2020, 07:17 PM #3Most Valued Member
- Join Date
- Aug 2011
- Location
- Melbourne
- Posts
- 4,779
What Steve said sounds like a plan. Another plan would be to sell this chuck and purchase another one that is suitable for your grinder.
Also, dont forget that the idea of dressing the surface of the chuck also allows (to a certain extent) for any fluxtuations in the surface that the mag chuck sits on, which also should be dressed. If you are moving your mag chuck to areas on the table that cannot and have never been dressed, then you will introduce other flatness issues that will be introduced on the surface of your mag chuck.
Having a mag chuck that is larger than the work envelope of your SG would be a right PITA.
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
-
7th Jan 2020, 07:44 PM #4
Hi Guys,
Is there a travel stop at the ends that can be temporarily removed ?Best Regards:
Baron J.
-
7th Jan 2020, 10:09 PM #5Member
- Join Date
- Nov 2018
- Location
- Tasmania
- Posts
- 97
No unfortunately, it's fully reaching the end of the table travel and bottoming out on the castings
The scary part is the table actually rides up about 3mm at one end if I fully let the castings collide
So I will need to have a stop at that end before I have a wheel explode or similar
-
7th Jan 2020, 10:36 PM #6Member
- Join Date
- Nov 2018
- Location
- Tasmania
- Posts
- 97
-
8th Jan 2020, 01:32 AM #7
Hi Tommy,
A fence is simply a raised edge to stop the work piece from being pushed off the end of the magnetic chuck.
Often there is one on the far edge as well.
10-12-2019-014.jpg 10-12-2019-013.jpg
If you look at these pictures you can see two fences. The long one held by two screws and a small one screwed on at the end. The sole purpose is to position the work piece and stop it being pushed off the end.Best Regards:
Baron J.
-
10th Jan 2020, 08:31 AM #8Member
- Join Date
- Nov 2018
- Location
- Tasmania
- Posts
- 97
-
19th Jan 2020, 09:38 PM #9Member
- Join Date
- Nov 2018
- Location
- Tasmania
- Posts
- 97
Well tonight a decided to tackle this
I shifted the chuck so I could fully reach the right end and I ground the first 30 mm of that end low by 0.3 mm
I then readjusted the chuck so I could traverse between the low spot and the other end and cleaned up the surface
It turned out ok, although with a little bit of chatter (maybe wheel balance?)
I don't think the chatter will be a problem for accuracy (I can't measure it), but I might dust it off for cosmetic purposes
I don't think I ever want to wet grind again! What a mess
20200119_210707.jpg
-
19th Jan 2020, 10:34 PM #10
Hi Tommy,
Yes you can see the chatter marking ! That wheel probably needs balancing and dressing.Best Regards:
Baron J.
-
20th Jan 2020, 07:24 PM #11Most Valued Member
- Join Date
- Aug 2011
- Location
- Melbourne
- Posts
- 4,779
Hi there,
Dressing your grinding wheel should get most of that out. Balancing may help. I run 250mm wheels on my Elliot SG and I have never balanced them (purely because I don't have the setup to do it) but I do dress them as required.
Simon
Sent from my SM-G970F using TapatalkGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
Similar Threads
-
Surface Grinder or T&G Grinder, which is best for adapting?
By TommyGMachining in forum METALWORK GENERALReplies: 6Last Post: 18th Jun 2019, 09:13 AM -
Surface grinder help
By DSEL74 in forum THE SMITHYReplies: 4Last Post: 2nd Mar 2017, 10:29 PM -
Surface Grinder Magnetic Chuck - Remagnetise
By electrosteam in forum METALWORK GENERALReplies: 18Last Post: 15th Jan 2017, 09:27 PM -
surface grinder
By allterrain50 in forum METALWORK GENERALReplies: 4Last Post: 27th Apr 2014, 04:06 PM -
surface grinder
By China in forum METALWORK GENERALReplies: 0Last Post: 19th Feb 2008, 12:48 AM