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Machine Shop and Tool Talk Shop Equipment, fabrication, repairs, how to fix it, which tool to use for the job. Machinist shop talk, straight to the point.

Machine Shop and Tool Talk

Storm Boring Bar


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  #1  
Old 09-04-2007, 07:51:42 PM
Kelly Tytlandsvik Kelly Tytlandsvik is offline
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Default Storm Boring Bar

Hi Guys

A friend of mine is looking for information on a Storm Boring bar.

How do you center it?
How do you advance the cutters once it is centered? You need to remove the cutter assembley to adjust the cutter.
Does anyone have a manual for one?
What came with it was a clamp and two cutter assmbleys.

It is a Model S 8.

Any help would be appreciated.

I have attached a photo.

Kelly T

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  #2  
Old 09-05-2007, 01:34:27 AM
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Craig A Craig A is offline
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Default Re: Storm boring bar

I have an old Van Norman which is almost identical to the one in the photo.
There is a locknut which holds the setting on the cutter head. As you rotate the entire cutter head the cutters advance and retract. There is a scale which you might have to look for quite closely to find it.
Mine came from an old Ford dealer here in town and was used a LOT to rebore the old 9N's for "tin can" sleeves.
It's not accurate enough for cylinder boring any more but it sure is handy for boring steel wheel hubs!........
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Old 09-05-2007, 09:09:12 AM
Kelly Tytlandsvik Kelly Tytlandsvik is offline
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Default Re: Storm boring bar

Hi Craig

I seen how to advance the cutters but you have to remove the cutter head from the boring bar to do it as the square headed shaft for adjusting sticks up inside the column then the plate on the bottom locks the cutters in place.

What is the proper way to center it over the cylinder? There is now device that I can see with it to do that??????

I will attach a photo showing the cutter heads. They have six cutters not just one like a flycutter.

Kelly T

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Old 10-10-2007, 11:49:41 PM
Kelly Tytlandsvik Kelly Tytlandsvik is offline
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Default Re: Storm boring bar

Giving this a bump!

I did get one suggestion to use a feeler gauge to center the boring bar. By retracting the cutters slightly and measuring the gap around the cutter tips. Now that is the best solution I have come up with so far other that dialing it in somehow. But it still doesn't solve the problem of adjusting the cutters. I can't seem to find anything like Craig mentions. The cutter head tightens into a taper and you have to loosen the screws holding the plate on the bottom of the head and then rotate the square shaft up inside of the column. The screws can be loosened but there is no way to get at the square end to adjust.

I did get an e-mail from a fellow that had seen my post and had the same questions......so I know it is not just me that is having this trouble.

Kelly T
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Old 10-20-2007, 07:29:57 AM
K D Redd K D Redd is offline
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Default Re: Storm boring bar

Some boring bars had a special micrometer that set on the head to measure how far out the cutter came. Also some bar have pins 120 degrees apart that retracted to center themselves in the bore.

Kent
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Old 10-20-2007, 07:25:21 PM
John Schwiebert John Schwiebert is offline
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Default Re: Storm boring bar

Last I knew like 3 years ago Storm was still in business. They are an excellent boring bar, but I think you might be missing a few pieces. I forgot to reread, but do you have the fixture to set the cutting tool?
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Old 10-21-2007, 12:14:23 AM
Kelly Tytlandsvik Kelly Tytlandsvik is offline
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Default Re: Storm boring bar

I will post a picture of the cutting heads to help explain. This one has 6 cutters in each head not like the ones with a single cutter and a micrometer to adjust the cut. It has to be adjusted by the square head at the top of the cutter head. Once the head is screwed into the spindle the bar needs to be centered. There is no device with my bar to do so. So the two expalnations I have gotten is to reduce the size of the cutters and use a feelergauge around the cutter tips to center it. OR the beveled leading edge of the cutter teeth would be used to center the bar after the head is adjusted to the finished hole size and then with slight pressure down the tapered leading edge would center the bar over the hole. Kind of??????

Now keep in mind that if it is done the first way with the feeler gauge. The cutter would have to be removed then adjusted to the proper diameter. But there is no way then to put the cutter head back into the boring bar as the cutter is now to big to fit up through the cylinder hole and it is to big to put in through the side of the boring bar base.

The second way using the tapered leading edge to center the bar seems kind mickey mouse and you would get one shot at getting the hole the right size.

There was no centering device that came with my bar. But if there is such a thing for this bar please post a picture. I have looked at the newer boring bars and know what you mean.

In the photo below you can see what I mean by having to remove the cutter head to advance the cutters. As the adjustment is made by loosening the 6 screws and then turning the square head that is at the top of the head. (Which is inside of the column when assembled to the boring bar)

With the two heads it looks like bores from 2 1/2 to 4 1/2 could be bored.

Kelly T

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Old 10-28-2007, 01:27:08 AM
Kelly Tytlandsvik Kelly Tytlandsvik is offline
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Default Re: Storm boring bar

Hi Guys

I found some patent numbers on the one cutter so did a patent search. Here are links to two of Storms boring bars and on for his main bearing line boring machine.

http://www.google.com/patents?id=6od...s=1915#PPP2,M1


http://www.google.com/patents?id=Q6x...s=1930#PPA7,M1

http://www.google.com/patents?id=beZ...=1930#PPA32,M1

Kelly T
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Old 12-26-2010, 11:25:08 PM
AustinPower AustinPower is offline
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Default Re: Storm boring bar

Quote:
Originally Posted by Kelly Tytlandsvik View Post
Hi Guys

A friend of mine is looking for information on a Storm Boring bar.

How do you center it?

Does anyone have a manual for one?
What came with it was a clamp and two cutter assembles.
It is a Model S 8.
Kelly T
Kelly,

Did your friend ever use the Storm S8? I purchased one today with the same accessories and no manual. Does he have any pointer on set up? Especially on how to center it over the bore?

Thanks,
John
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  #10  
Old 12-31-2010, 11:54:09 PM
John Dunn John Dunn is offline
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Default Re: Storm boring bar

I made a living in the automotive machine shops for many years, used mostly Rottler & Van Norman boring bars. I picked up one of these old Storm machines once and bored a few holes on a junk block for fun. My belief is that you would set the cutter head to desired size with an ordinary outside micrometer measuring across any 2 opposite bits. No guarantee it will bore exactly what you measure but start small and with a little trial and error I think it would work.
Centering seemed like a careful juggling act of lowering the tapered leading edge of cutter bits into the bore, while shifting machine around slightly to let it center itself, then clamping machine in position without disturbing anything. I got a couple cylinders cleaned up OK but the finish was quite rough like one or 2 bits varied a little.
I had thoughts of using the machine as a drive unit for making up a portable line boring outfit until I realized it has WAY to much feed per revolution for use with a single tool. (something like .025" per revolution I think) The ONLY way these can work is with 6 bits to divide the work.
I traded mine off years ago. There was a nice one at LeSueur
last year, cheap, on a stand for small engine blocks. It was tempting but I passed it by. Good luck!
John
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