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Lapidary / Gemstone Community Forum
April 20, 2019, 02:54:52 pm
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What size blade flanges - Coolant depth ??

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Author Topic: What size blade flanges - Coolant depth ??  (Read 1853 times)
Taogem
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« Reply #15 on: February 12, 2009, 02:34:01 pm »

Mine is not so easy..... Would not work for a bunch of reasons.. 

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Bluesssman
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« Reply #16 on: February 12, 2009, 03:17:37 pm »

I can see what you mean! So your unit has one motor to run both the saw blade and the feed.
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Taogem
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« Reply #17 on: February 12, 2009, 04:09:45 pm »

So your unit has one motor to run both the saw blade and the feed.

Yes...
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theimage1
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« Reply #18 on: February 13, 2009, 10:42:12 am »

I can truthfully say I have never seen a more complex mechanism to cut a rock!
It must have been a home made rig, or the manufacturer would have gone out of business trying to just keep the pulleys in stock.

The most amazing thing to me, is that nothing in the picture appears to be connected to the shaft of the saw blade. Does the blade just turn in sympathy because everything else is turning?

Wow.
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Taogem
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« Reply #19 on: February 13, 2009, 11:11:57 am »

Does the blade just turn in sympathy because everything else is turning?

Wow.

 ;D  ;D  ;D

Follow the belt up from the motor to the pulley towards the top. The blade is running off that..

While that belt is turning, "out of sympathy" it rubs up against the adjacent large pulley and that is where that complex series of pulleys come into play that eventually work the feed.

It is homemade for sure....... The guy I bought it from made it, but the guy who's house I picked it up from had an identical unit !

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Bluesssman
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« Reply #20 on: February 13, 2009, 11:19:50 am »

I wonder if you get much belt slippage where the main drive belt's back contacts the back of the belt on the big pulley? You have mentioned some problems cutting larger stones.
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Taogem
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« Reply #21 on: February 13, 2009, 11:53:07 am »

I wonder if you get much belt slippage

I know what you mean, but believe it or not, no slippage at all....

The motors breaker switch will trip off if I don't have the feed set way down so that the blade can keep up with the cutting. In other words, the motor use to get hot because of the rock being pushed up against a blade that just will not cut. Rick use to get fairly hot too. The belts never did slip though..

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Bluesssman
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« Reply #22 on: February 13, 2009, 01:00:37 pm »

What size motor does your saw use?
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Taogem
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« Reply #23 on: February 13, 2009, 01:10:19 pm »

What size motor does your saw use?

The tag is situated where I can't see the writing on it. That part of the motor is hidden by a piece of iron.

The previous ones I had on there were 1/4 hp. I vaguely remember bringing home a 1/2 hp that I am pretty sure went on the saw.

Pretty sure I put that 1/2 hp on there.
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Bluesssman
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« Reply #24 on: February 13, 2009, 01:16:58 pm »

I am just rambling, but looking at your saw with all of its belts and pulleys and the 90 degree gearing, I am wondering if too much horse power is being lost. Especially if the motor is getting hot! There may be too much demand for a 1/2 horse motor.

Gary
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Taogem
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« Reply #25 on: February 13, 2009, 01:48:53 pm »

It's no longer getting hot as I changed a couple of pulleys to slow down the feed so as to not strain the blade and motor.

It is probably difficult to concept by looking at the pic, but there is no strain or friction at all on any of the belts.

I keep coming back to the blade itself. Even though it appears to be very new, it just sucks.

Now I have yet to run the green abrasive wheel through it a bit as was suggested. Been cutting rock the last couple of days. Slow going but at least it is working.

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Seth
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« Reply #26 on: February 13, 2009, 02:15:21 pm »

I have never seen a saw set up like this. Maybe get rid of the pulleys in the middle and run from your main drive pulley to a step pulley in the front with a simple tension pulley with a spring to keep the belt tight in the middle. Then all you have to do is put the belt in the diiferent slots in the step pulley.
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Bluesssman
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« Reply #27 on: February 13, 2009, 02:26:38 pm »

I think you will find all of the pulleys are necessary to reduce the rpm at the 90 degree gear setup for proper feed speed. Just my .02...
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Seth
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« Reply #28 on: February 13, 2009, 02:39:12 pm »

Not sure if you are responding to my post Bluesman but all of those pulleys are not needed in my book.
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Taogem
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« Reply #29 on: February 13, 2009, 03:19:53 pm »

I think you will find all of the pulleys are necessary to reduce the rpm at the 90 degree gear setup for proper feed speed. Just my .02...

Yes, your right...

That plus it all is in conjunction with the speed of the screw drive as it leaves the old tractor steering box unit.

The combination of all the pulleys act as a reduction for the feed.

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