Tool Post Grinder

[Okapi]

A good work, based on the idea used on Schaublin and others small lathes makers, but a lot less expensive.

I have exactly the same construction for a Schaublin 70 with the improvement of the independent motor you've made.

[PJs]

One is glad to be of service, Doug. What I was initially impressed with was the 17.5 thou of radial clearance between the shaft and retaining washer to allow the shafts to be "carefully" installed in the housing/bearings and cleverly using a 9/16 UNF for the retainer on the pulley end. Again, Excellent design, IMHO. The design reminded me of T-nuts for 80/20 or Bosch extrusions. I assume I'm right about using Round Bar to start with. Thanks again for sharing all this! ~PJ

[Paul Jones]

Doug,
Thank you for your explanation for how you attached the spindle housing and still have the thickness of the retaining washer clear the spindle when the spindle is inserted.
Paul

[kbalch]

Hi Doug,

Thanks for another great contribution! Your Tool Post Grinder is the 'Tool of the Week'!

As you've already received one of our official HomemadeTools.net T-shirts, we'd be glad to award you a $25 online gift card.

Just send me your email address via PM and we'll get things processed directly.

Congrats!

Ken

[PJs]

Congrats Doug! Well deserved! ~PJ

[Jon]

That makes 9 Tool of the Week wins for rossbotics. One more and we have our first 10-Time Tool of the Week award winner.


Here are all of rossbotics's 9 Tool of the Week wins:

Height and Square Gauge by rossbotics

tags: gauge, square, dial indicator, height gauge

Filing Machine by rossbotics

tags: file, gunsmithing, motor

Slitting Saw Arbor by rossbotics

tags: machining, arbor, slitting saw

Threading Insert Tool Holder by rossbotics

tags: lathe, tool holder, threading

Toolmaker's Vise by rossbotics

tags: vise, machining

Indexing Fixture by rossbotics

tags: gears, indexing unit, fixture

Gear Cutter Arbor by rossbotics

tags: arbor, gears, cutting tool

Direct Indexing Sharpening Fixture by rossbotics

tags: sharpening, fixture

Tool Post Grinder by rossbotics

tags: grinder, pulley, tool post

[Manitoba Man]

From Canada

Nicely done and documented. I am always looking for ways :-) and means.

Bob

[Hackley]

Now I know what my next project will be. Really nice work and thanks for posting!

[WyoGreen]

Very nice design, I've been thinking about building one for some time now. So I've been studying the drawings, and am a little confused about a couple of things. In looking at the Grinder Base drawing, I see the dimension between the two holes that attach the Base to the Spindle Housing to be 1.250", but the Spindle Housing drawing shows the dimension to be .750 inches. The second thing confusing me is the Spindle Housing drawing shows the Base attaching close to one end of the housing, yet the pictures appear to show the base attached to the middle of the housing. Since the motor specs show the motor to be about 6" long, I could see the motor having to be attached toward the front end in order for the pulleys to line up at the back end.
Could there have been a design change between the drawings and the actual finished grinder? Is the spindle housing longer than 6 inches?
I only bring this up in case someone builds this from the plans and things don't line up right.

Thanks a lot for the design, it helps a lot in my thinking process, Steve

[WyoGreen]

Very nice design. What I'm most interested in however is a source of high speed flat belts. I went to the source you quoted for the flat belt, but only found variations of v belts. I have used poly belts, but they are too flexible for higher speeds. Could you give us a bit more information on the belt you used?

Thanks, Steve