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TomYaz 
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 Topic: CNC this critical All-Crop Part
Posted: 19 Apr 2012 at 7:27pm |
How much would this cost? Say 100 units...
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If its not an All-Crop, it all crap!
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GlenninPA
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Posted: 19 Apr 2012 at 7:35pm |
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Who does the accurate CAD drawing that can be used to generate the CNC program?
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Good judgment comes from experience. Experience comes from bad judgment.
From listening comes wisdom and from speaking comes repentance.
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GlenninPA
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Posted: 19 Apr 2012 at 7:36pm |
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What material will you spec?
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Good judgment comes from experience. Experience comes from bad judgment.
From listening comes wisdom and from speaking comes repentance.
Wise men learn more from fools than fools from the wise.
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Reed(UT)
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Posted: 19 Apr 2012 at 7:58pm |
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What about machining one of them, and casting the rest?
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2 WD45s, 190XT III, 72 AllCrop, Bunch of snap-coupler stuff. Looking for a B and CA
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TomYaz
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Posted: 19 Apr 2012 at 8:19pm |
 GlenninPA wrote:
Who does the accurate CAD drawing that can be used to generate the CNC program? |
Someone with that skill me thinks.
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If its not an All-Crop, it all crap!
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TomYaz
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Posted: 19 Apr 2012 at 8:20pm |
Reed(UT) wrote:
What about machining one of them, and casting the rest? |
I have had enough of broken All-Crop cast bearings to not do that.
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If its not an All-Crop, it all crap!
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TomYaz
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Posted: 19 Apr 2012 at 8:20pm |
GlenninPA wrote:
What material will you spec? |
Steel?
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If its not an All-Crop, it all crap!
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Tracy Martin TN
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Posted: 19 Apr 2012 at 8:28pm |
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Be more cost effective to investment cast the part from 4140 alloy. Then machine the critical areas. Plenty strong that way. HTH Tracy Martin
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No greater gift than healthy grandkids!
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CTuckerNWIL
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Posted: 19 Apr 2012 at 8:37pm |
Find an outfit like these guys and get just what you want. http://www.martinsprocket.com/PDF/bubcl.pdf
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CTuckerNWIL
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Posted: 19 Apr 2012 at 8:41pm |
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Some of these can be bought with a hub of your choice and then weld the sprocket on. The taper lock ones don't need a key to drive and work great. If you are looking for originality they could be done like Tracy mentioned and would last a lifetime.
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TomYaz
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Posted: 19 Apr 2012 at 8:49pm |
Ah yes,,,Martin. To make one bevel gear that goes on the straw spreader and model 60 unloading auger is $600.00. However if I order 50 it would be $81.50 each. Now If I can get 50 or so pre-paid orders from you gentlemen I will have them made and will sell them to you at cost. Coke thanks for the tip. I know nothing about making such things...
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If its not an All-Crop, it all crap!
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CTuckerNWIL
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Posted: 19 Apr 2012 at 9:09pm |
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Bevel gears are a little pricey compared to sprockets. I know there are places out there you can buy the sprocket you want and add the hub you want. These would be off the shelf items, not special order like a bevel gear.
Edited by CTuckerNWIL - 19 Apr 2012 at 9:09pm
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TomYaz
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Posted: 19 Apr 2012 at 9:32pm |
CTuckerNWIL wrote:
Bevel gears are a little pricey compared to sprockets. I know there are places out there you can buy the sprocket you want and add the hub you want. These would be off the shelf items, not special order like a bevel gear.
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Not sure that would be available for this..Notice the hub has a slip clutch surface. I doubt that is "off the shelf"...
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If its not an All-Crop, it all crap!
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JohnCO
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Posted: 20 Apr 2012 at 1:12am |
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The toughest part of the project is matching the paint job on the original. LOL
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"If at first you don't succeed, get a bigger hammer"
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didgood
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Posted: 20 Apr 2012 at 6:05am |
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Tom, are you in the PA midstate? That looks like a Holy Spirit pen. If you are, I know a few shops that might take a look.
The reason, why the price goes down so much for more parts, is because a lot of the time to CNC is in the initial set up. Once the first part is machined, duplicates can be made easily.
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TexasAllis
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Posted: 20 Apr 2012 at 6:34am |
Tracy Martin TN wrote:
Be more cost effective to investment cast the part from 4140 alloy. Then machine the critical areas. Plenty strong that way. HTH Tracy Martin |
Tracy you think that would be the cheapest route? I'm thinking once someone programs the tape for CNC you could chunk that part out of billet in short order.
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TomYaz
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Posted: 20 Apr 2012 at 7:16am |
didgood wrote:
Tom, are you in the PA midstate? That looks like a Holy Spirit pen. If you are, I know a few shops that might take a look.
The reason, why the price goes down so much for more parts, is because a lot of the time to CNC is in the initial set up. Once the first part is machined, duplicates can be made easily. |
Yep...very observant! I live a few blocks away and my wife works there. i have had good luck with finding local manufacturers around here so I am not surprised. Would like to hear who could do it.
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If its not an All-Crop, it all crap!
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Gerald J.
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Posted: 20 Apr 2012 at 7:55am |
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Look for a stock sprocket with a large hub and carve that hub to the sleeve and clutch surface shape, or a weld a hub sprocket and carve only the sleeve and clutch surface shape.
Looks like a slip clutch, not far from one used on JD 7000 planters. That clutch surface is going to need tough material to stand slipping. Easily machined steel won't last long in the clutch or the sprocket.
Gerald J.
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Tracy Martin TN
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Posted: 20 Apr 2012 at 8:50am |
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Lots of scrap to machine from solid. If you want it to look original, several setups to accomplish that. If the volume is very low, machining is the way to go. HTH Tracy
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No greater gift than healthy grandkids!
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NoMoneyAC
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Posted: 20 Apr 2012 at 8:55am |
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Is the pic of a NOS unused?
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Rawleigh
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Posted: 20 Apr 2012 at 12:55pm |
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CNC the clutch and sprocket and press in and weld or pin a hub in it. That would minimize the machining and materials costs.
Once you have the initial programming and fixturing done the price should drop quickly.
Edited by Rawleigh - 20 Apr 2012 at 12:56pm
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Rawleigh
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Posted: 20 Apr 2012 at 1:51pm |
Tom: Do a drawing and post it on the Practical Machinist's manufacturing resource page: http://www.practicalmachinist.com/vb/manufacturing-resource/
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redline
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Posted: 20 Apr 2012 at 6:43pm |
I can't add a lot to this, but if I were in your shoes, and I can be somewhat of a cobbler, I would try to adapt a Gleaner slip clutch setup with the replaceable clutch jaws. It wouldn't be original, but parts should be available off the shelf for a while. The new idea pickers and uni systems had replaceable slip clutch jaws too if I remember correctly. The beater on an F2 shows the clutch jaws. This will be a page in the agco parts books.
I don't know how that will work without entering passwords, but maybe you can get to the listing somehow.
edit-it appears the link only gets you to the front page of the F2. I see the separator raddle shows a slip clutch also.
Edited by redline - 20 Apr 2012 at 6:45pm
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If it weren't for the last minute, I wouldn't get anything done!
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TomYaz
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Posted: 20 Apr 2012 at 6:58pm |
NoMoneyAC wrote:
Is the pic of a NOS unused? |
No its used. Hopefully not worn too badly to eliminate using it as a pattern. I would only want something that would duplicate this exactly. Keep in mind this part is part of an assembly that has to fit right with the parts. cobbling an alternative would probably open up a pandoras box in relation to the other parts. And since I would be peddling these and just making one for myself, sticking to the original design would be desirable.
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If its not an All-Crop, it all crap!
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Tracy Martin TN
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Posted: 20 Apr 2012 at 10:29pm |
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I can duplicate them as far as the basic look and size. The cast finish I can do but not cost effective. Look at my G master lift handles and Snap Coupler lift latch cover plates, they look very original. Duplicating them is a piece of cake, it is the cost that will be hard to swallow.What is your jump off point on price? HTH Tracy Martin
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No greater gift than healthy grandkids!
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427435
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Posted: 20 Apr 2012 at 11:44pm |
With the part you have, you should be able to find a small foundry to make a wood or resin pattern that would be good for 10-50 parts---maybe a 100. Have it poured using ductile iron instead of gray iron, and you should be good to go. Obviously, you have to allow some extra cast material in the machined areas to allow the machining to clean up. I did a search for "low volume foundry Pennsylvania" and this was the first one: http://www.bentonfoundry.com/accomp.htmI can't remember if you are from Pennsylvania for sure, but you get the idea.
Edited by 427435 - 20 Apr 2012 at 11:45pm
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Mark
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TomYaz
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Posted: 21 Apr 2012 at 5:35am |
Thanks Mark and the rest of you fellas for your input. Tracy I sent you a PM. Tom
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If its not an All-Crop, it all crap!
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