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Started thinking/planning about it when my crappy 2x72 cobbled up grinder motor died in early Jan 2021, and I started actual welding in March 2021. I still have to weld the work surface to the work arm this coming weekend, and re-do the belt covers (I burned through the thin metal!), but it is actually running now: Baldor Industrial 3PH, 3HP motor with an VPF
Started by removing the inside weld seam in a couple of square tubing pieces:
Although I did make most everything from scratch, I did buy the "C" bracket assembly from Origin Blade Maker. Since it is my own design, I have no plans - I adjusted as I went along. Here I am clamping everything to get an idea of spacing, length, etc..
Cut and milled the top arm, and even made some delrin spacers for a slight press fit:
This is the mockup (clamped in early April) - nothing welded yet:
Once I figured the spacing to get all wheels aligned, I started welding - 100% with my new to me HTP 201 water-cooled Tig Machine:
Reply:
Welded a spacer for the rear to hold the two pillow bearings:
Instead of on the side, I wanted a handle at the end, so I capped the movable arm:
Note the adjustable/trim piece for the top wheel I also got that assembly from Origin Blade Maker:
Reply:Late April, main body welded - another mockup with clamps:
How I tested various springs:
Fitting the drive wheel:
Custom delrin to get spacing perfect against the bearing:
For the base, I used a scrap piece of about 1/2" I found while doing cleanup with my son's Boy Scout camp in a local creek:
Took a lot of sanding to get the bulk of the rust:
And then vinegar (works great to remove mill scale!):
Reply:Welding the main frame to the base - all of this square tubing is 1/4" wall:
Occasionally I got a decent looking Tig weld:
Then started working on the stand (1/8" wall)
Reply:Getting closer:
To being able to do small adjustments on the spring for the top arm, I made up and welded this small piece:
I was initially going to make a movable arm for the VFD from scratch, but found a $20 brand new arm - hard to pass up:
Made and welded a simple bracket to hold the VFD:
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One side:
other:
Then wire motor and VFD:
Reply:Still need to weld this piece:
But here is the running grinder/stand:
My first Tig project. About 4 months, done a little bit every weekend
Reply:Your clamping looks good very important.
Reply:Very nice grinder! That articulated mount for the VFD is quite nice - what was it originally for?I like the drive wheel. Where did you get that? It looks like it is tapped on the end to receive a round disc/plate for you to attach a sanding disc as well.
Reply:Thank you. The articulated mount is for a computer monitor - was on special for $20 - it was designed for up to 17.6 pounds, and my VFD was about 11 pounds:https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1The drive wheel is what is left of the original multi tool attachment:https://multitoolgrinders.com/2-x-36...MaAv-LEALw_wcBThe drive wheel has a very slight wobble, so I might put it on the lathe to true up a little bit
Reply:New tig welder, I need to put it to work
Nice grinder project
DIY CNC Plasma table USB BOB Price THCHypertherm 65Everlast PowerTig 255 EXTMiler 180 Mig13" metal latheMill/ DrillECT, ECT,
Reply:Great job on you sander. Really great pictures and captions too. Thanks for posting, I'm sure it will inspire others who are on the fence, and/or those who have the stuff ready like you , but haven't gotten to the welding step. When you order the parts, you're involved. When you start welding you are committed. https://www.weldingweb.com/images/smilies/smile.gifRegardsAirco 250 ac/dc Heliwelder Square waveMiller Synchrowave 180 sdMiller Econo Twin HFLincoln 210 MPDayton 225 ac/dcVictor torchesSnap-On YA-212Lotos Cut60D |
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发表于 2021-9-1 23:16:08