Carbide Tool Grinder Question
Close
Login to Your Account
Results 1 to 10 of 10
  1. #1
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    54
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    4

    Default Carbide Tool Grinder Question

    I picked up a Ex-Cell-O carbide tool grinder awhile back from a on-line auction & I finally got around to cleaning it up & going through it. Luckily it appears that the spindle/bearings have been rebuilt & the bearings seem fine! So basically it just needed a good cleaning & some new paint.

    My question has to do with the right-hand side table & the dial adjusters/indicators on the ends of the table. They are calibrated to .025" per turn of the dial & they seem to be set-up to read the amount of cut from the grinding wheel?

    I've done a ton of searches & I haven't been able to find another tool grinder with this type of set-up?

    I originally thought it may have been a shop made addition, But the table is a casting & has a part# cast into it. The head casting of the grinder also has two recessed clearance areas that the table fits into when sitting 90 degrees to the wheel & they don't seem to of been modified or milled after casting?

    I'm sure there was some type of fixture or jig that originally went with this table set-up & the indicators/adjusters, But naturally that part is missing.

    Does anyone have a idea of what type of jig or fixture would have been used with these indicators/adjusters, And how they would have worked?

    Doug
    Attached Thumbnails Attached Thumbnails img_6879.jpg   img_6811-close-up.jpg   img_6762.jpg   img_6765.jpg   img_7025.jpg  


  2. Likes texasgunsmith liked this post
  3. #2
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    54
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    4

    Default

    Here's a few before & after pics of the carbide grinder.

    Doug
    Attached Thumbnails Attached Thumbnails img_5951.jpg   img_5952.jpg   img_6871.jpg   img_6941.jpg  

  4. Likes texasgunsmith liked this post
  5. #3
    Join Date
    Sep 2005
    Location
    Northern California
    Posts
    1,001
    Post Thanks / Like
    Likes (Given)
    4
    Likes (Received)
    144

    Default

    I've seen quite a few Excello grinders, none with attachments, usually they were simply touching up single point tools. It wouldn't be uncommon to have a collet block or vise presenting the tool at an angel that established rake angles. Most would have been proprietary and likely job specific. For general purpose work a protractor that rides in the table slots usually meets the need nicely.

  6. #4
    Join Date
    Oct 2010
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    5,517
    Post Thanks / Like
    Likes (Given)
    5212
    Likes (Received)
    2063

    Default

    I've not see one set up that way, but would speculate that the micrometer guides were used with large square or rectangular tool shanks, to control width on grooving tools (with shanks upright) or possibly height on form tools (with shanks laid on their sides). And if not large tool shanks, then similarly sized/shaped fixtures where the actual cutting bit being sharpened might be mounted at any angle or compound angle.

  7. #5
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    54
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    4

    Default

    Quote Originally Posted by Cyclotronguy View Post
    I've seen quite a few Excello grinders, none with attachments
    After several days of doing hundreds of searches including Baldor & Delta carbide grinders, I haven't seen any with this style of set-up.

    Quote Originally Posted by Cyclotronguy View Post
    For general purpose work a protractor that rides in the table slots usually meets the need nicely.
    Yeah that's probably the route I'll end up going with!
    I seen a nice design that Hammond grinders used in this old thread.
    [B]Hammond Machinery Builders, Tool Grinder Model CB-77[/B]

    Doug
    Attached Thumbnails Attached Thumbnails hammond-miter-gauge.jpg  

  8. Likes texasgunsmith liked this post
  9. #6
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    54
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    4

    Default

    Quote Originally Posted by sfriedberg View Post
    I've not see one set up that way,
    Well your not alone, I've asked this question on a couple other boards & nobody has seen this type of set-up.

    Quote Originally Posted by sfriedberg View Post
    similarly sized/shaped fixtures where the actual cutting bit being sharpened might be mounted at any angle or compound angle.
    That was my thought also!

    I'm guessing that some type of jig or fixture may have been held up against the adjustable blocks to control the amount of material being removed?

    Here's a few more pictures of the adjustable block set-up.

    Doug
    Attached Thumbnails Attached Thumbnails img_7036.jpg   img_7039.jpg   img_7037.jpg   img_7043.jpg  

  10. #7
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    54
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    4

    Default

    Well seeing that I haven't been able to find any more information on this particular set-up, It looks as though I'll have to come up with something on my own?

    I currently don't have the need to grind carbide tool bits, But I got the grinder at a good price so I didn't want to pass it up!

    I'm thinking of trying to setting it up as a 4-facet drill bit sharpener for now?

    Quote Originally Posted by Cyclotronguy View Post
    It wouldn't be uncommon to have a collet block or vise presenting the tool at an angel that established rake angles.
    I'm kind of thinking like that also!

    I could use a 5C collet block to hold the drill bit in a fixture, Then by tilting the table & angling the fixture I could set the correct angles needed. I would then need to make that assembly somehow index off of the dial adjuster blocks while sliding in the miter slot?

    Doug

  11. #8
    Join Date
    Jun 2012
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    12,755
    Post Thanks / Like
    Likes (Given)
    4337
    Likes (Received)
    4567

    Default

    I ran that machine to grind tool bits years ago but don't remember if it had the hand dials to feed in.

    for drill sharpening, one might make a box to hold round bushings that have a key to locate the Drill lip.
    The bushing would simply be round stock drilled with each side drill, the hardened and ID polished if needed. The homemade bushings would be a very low cost compared to buying fancy collets.

    Yes, one would eyeball the bushing to set the lip just higher than center - then the grinding would grind the lip to center and be correct angle- the heal would be snubbed by eyeball to a straight land up to near the primary target lane with.

    That machine would be great for sharpening chipper blades.

    Darn..waiting for my car to be done so I can go hunting.

  12. #9
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    54
    Post Thanks / Like
    Likes (Given)
    3
    Likes (Received)
    4

    Default

    Quote Originally Posted by michiganbuck View Post
    I ran that machine to grind tool bits years ago
    Did you use to work at Blissfield Manufacturing?

    That's where I got the grinder from!

    This 10" Van Dorn grinder also followed me home from that auction.

    Doug
    Attached Thumbnails Attached Thumbnails 10-.-van-dorn.jpg  

  13. #10
    Join Date
    Jun 2012
    Country
    UNITED STATES
    State/Province
    Michigan
    Posts
    12,755
    Post Thanks / Like
    Likes (Given)
    4337
    Likes (Received)
    4567

    Default

    No, it was Chrysler shop. The tool bits were brazed carbide topped 1x 1 x x 5" bits the went into a broach package. the grinding was to snub off the heal corner on the following side where cast iron high heat would abrade that corner. Just a very rough grinding with a green wheel. The machine was also used for and snagging where steel or braze might be hit with a diamond wheel.
    Wheels had a circumference wire that would be pulled at about half the wheel life.

    My son has a Van Dorn grinder in his shop, a nice machine.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •