Thanks: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 15 of 15
Thread: Belt grinder/linisher
-
30th Dec 2017, 12:57 AM #1China
- Join Date
- Dec 2005
- Location
- South Australia
- Posts
- 1,656
Belt grinder/linisher
Hi,
I have the need for a specific purpose belt grinder/linishing machine, my multitool is used too often to tie it up, so I have decided to build my own based on the well known KMG, I have
enough 'I will need that one day" stuff laying around the shed. I have a question is the radius on the tracking wheel critical or does it just need to be a even shallow radius.
-
30th Dec 2017, 06:21 AM #2
Hi,
Just make the crown on the drum a few mm larger than the outer edges. Say 3 mm for a 100 mm wide drum. It is not critical at all.Best Regards:
Baron J.
-
30th Dec 2017, 08:46 AM #3Golden Member
- Join Date
- Oct 2001
- Location
- ACT
- Posts
- 667
I made my own variable speed 48" knife style grinder/Linisher a few months back after collecting parts for ages. It can fit both48 and 72" belts, but I like the more compact nature of the 48. Still yet to make a couple of other attachments such as small radius wheel and mount for the rubber contact wheel.
I think mine would benefit if I re machined my tracking wheel - which I made at 2 degree taper from each side towards the middle. It works fine but can be sensitive to track well on some belts. THat taper gives it about 2mm more in the middle( depending on width of your wheel). Would agree with Baron to give it a little more in the centre to about 3 mm.
Cheers
-
30th Dec 2017, 11:05 AM #4Most Valued Member
- Join Date
- Jul 2006
- Location
- Athelstone, SA 5076
- Posts
- 4,255
I thought about making my own but considered it was easier to buy them
https://www.knifegrinderparts.com/collections/wheels
I'll get around to finishing it one day
-
30th Dec 2017, 11:12 AM #5Member: Blue and white apron brigade
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 7,182
On a 50mm wide drum even a couple of turns of electrical tape in the middle and 1 turn on either side of the middle turn can act as a sufficient crown.
-
30th Dec 2017, 02:41 PM #6Banned
- Join Date
- Feb 2015
- Location
- Oz
- Age
- 73
- Posts
- 459
I was going to make my own belt sander, and then I priced the parts. That put an end to that.
-
30th Dec 2017, 04:13 PM #7China
- Join Date
- Dec 2005
- Location
- South Australia
- Posts
- 1,656
Thanks for the replies, I thought about buying them, but I have a quantity of new bearings plus plenty of aluminium, so I will make them, only thing is I will need some one to broach the keyway
-
30th Dec 2017, 08:05 PM #8Golden Member
- Join Date
- Oct 2001
- Location
- ACT
- Posts
- 667
buying ready made parts like idler, tracking and contact wheels not to mention all different attachments can be very expensive. However not everyone is expensive, there is/was a guy in Poland making wheel sets for $100-120 including postage who was selling on ebay.
If you have a lathe and a welder, and find/pick up some raw materials cheaply and a few bearings then its pretty easy to make a decent grinder. Most expensive items for mine were a good 3phase motor and VFD.
Also fairly simple to cut a keyway in the lathe using a boring bar.
-
30th Dec 2017, 09:26 PM #9Most Valued Member
- Join Date
- Jul 2016
- Location
- Melbourne
- Age
- 35
- Posts
- 1,522
If you send the parts to melbourne im happy to broach them for you, although I dont have many metric broaches.
-
30th Dec 2017, 11:25 PM #10China
- Join Date
- Dec 2005
- Location
- South Australia
- Posts
- 1,656
I picked a pack of 20 NHK bearings a couple of years ago because they were ridiculously cheap and I have about 10 or so 55mm off cuts of aluminium bar so it seems pointless to buy ready made items
plus I have several motors collecting dust
Thanks for the offer caskwarrior I think I will be able find some one locally, I will keep you in mind just in case, I will investigate the above mentioned method of using a boring bar, only the drive wheel needs a key way
-
1st Jan 2018, 10:10 AM #11
If broaching isn’t an option could you drill a small hole on the PCD of what the centre hole OD will be then just file it square for the key way?
Sent from my iPad using Tapatalk…..Live a Quiet Life & Work with your Hands
-
1st Jan 2018, 08:08 PM #12Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,540
In this post here //metalworkforums.com/f65/t1848...52#post1871552 I had a look at that and the rule of thumb from Machinery's Handbook is 1/8" per foot of belt width. It should not be much because if too pronounced it will distort the belts.
I'd offer to do your keyways for you as I have the metric broaches and the press but while they are in Adelaide, I'm not and probably won't be for several months. If you don't mind a bit of file work, there is this way - //metalworkforums.com/f65/t1851...57#post1779057. If you can wait several (indeterminate) months I may be able to help.
Michael
-
2nd Jan 2018, 01:57 AM #13China
- Join Date
- Dec 2005
- Location
- South Australia
- Posts
- 1,656
Michael this project will not happen overnight (I tend to get side tracked easily) when I am ready I will contact you and see where you are if I get desperate I will have a go at doing it in the lathe,
re the radius I had a really clever moment and decided t measure the radius on my Multitool ( yeh I know some times the simplest things allude me) it is only about 1mm high in the center.
-
2nd Jan 2018, 06:07 AM #14
That sounds about right for a 50 - 60 mm wide pulley. As far as the keyway is concerned, you could always just drill the shaft and then mill a slot across the end of the pulley diameter, then use a bit of round bar as a key. You will need to prevent the pulley from moving away along the shaft though.
Best Regards:
Baron J.
-
2nd Jan 2018, 10:33 AM #15Diamond Member
- Join Date
- Feb 2013
- Location
- Laidley, SE Qld
- Posts
- 1,038
Maybe an old school taper pin?
Similar Threads
-
Hafco BS-48 Belt linisher/ sander
By dradyz in forum METALWORK - Machinery, Equipment, MARKETReplies: 0Last Post: 23rd May 2016, 06:51 PM -
Belt grinder/linisher belts
By gngh in forum METALWORK GENERALReplies: 11Last Post: 24th May 2013, 07:57 AM -
Parken Belt Linisher
By RayG in forum METALWORK GENERALReplies: 21Last Post: 29th Apr 2011, 10:55 AM -
Linisher belt breakage
By Grahame Collins in forum METALWORK GENERALReplies: 10Last Post: 9th Jul 2010, 06:34 PM -
using belt sander as linisher
By Com_VC in forum METALWORK GENERALReplies: 3Last Post: 25th Nov 2007, 02:42 PM