WHO NEEDS CNC?
- Bill Shields
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Re: WHO NEEDS CNC?
Giggle:
this is another one of those endless discussion threads...
The Swiss were doing very accurate watch work long before any control method other than gears and cams was available....and if you are making very large numbers of the same part, the old multi-spindle, mechanical cam machine will still eat everybody's lunch.
this is another one of those endless discussion threads...
The Swiss were doing very accurate watch work long before any control method other than gears and cams was available....and if you are making very large numbers of the same part, the old multi-spindle, mechanical cam machine will still eat everybody's lunch.
Too many things going on to bother listing them.
Re: WHO NEEDS CNC?
Dave's work shown here (and that chucker is a real beauty) isn't really a good comparison to what CNC really brings to the table; the ability to run multiple axes simultaneously. In the video here, we see the lathe cutting in a single axis each time. On a manual mill, we (I) cut one axis at a time. CNC can cut 5 different directions at once.
The CNC also doesn't get tired as fast as I do. Sigh.
The CNC also doesn't get tired as fast as I do. Sigh.
12x36 Enco Lathe, 9x42 Bridgeport, SMAW, O/A, Miller MIG w/gas, plasma
Not enough measuring tools...
1.5" Allen Models Consolidation on air.
1" FEF in progress
1" & 3/4" LE Projects
I'm thankful that metal is recyclable....
Not enough measuring tools...
1.5" Allen Models Consolidation on air.
1" FEF in progress
1" & 3/4" LE Projects
I'm thankful that metal is recyclable....
- Trainman4602
- Posts: 3482
- Joined: Sat Oct 16, 2004 9:26 pm
- Location: New Jersey
Re: WHO NEEDS CNC?
I can make that handle without the use of CNC
ALLWAYS OPERATING MY TRAIN IN A SAFE MANNER USING AUTOMATIC AIR BRAKES
- Bill Shields
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Re: WHO NEEDS CNC?
Only 5 directions?
A somewhat limited machine.....
A somewhat limited machine.....
Too many things going on to bother listing them.
- AnthonyDuarte
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Re: WHO NEEDS CNC?
Practically anything that can be made with CNC can also be made with manual equipment, but it would be silly to suggest that the old ways are just as easy. Granted, in some cases they are neck and neck as far as cycle times and unattended running are concerned (the automatic cam-driven screw machine has come up), although even then, cam driven can only keep up with certain kinds of parts, whereas the modern CNC swiss lathes have much greater versatility.
A fine example of where CNC unquestionably has the advantage is turbine impellers. The earliest photograph I can find of impeller manufacturing is from May 1945. The amount of setup and labor that went into it is truly astonishing and no doubt inspiring, but let's not forget that set up and labor are the two biggest costs of a machine shop. CNC reduces those dramatically.
This has been a very interesting discussion, but as far as our hobby is concerned, I don't feel that it's productive. Discussing the economics of CNC vs Manual is only useful if it's putting food on the table. This is a hobby. The most important thing for its survival is that its participants and suppliers are interested in building. How this is accomplished is irrelevant.
Keep on making chips every one, whether it's with a chisel or the most cutting edge technology, just keep on doing it.
A fine example of where CNC unquestionably has the advantage is turbine impellers. The earliest photograph I can find of impeller manufacturing is from May 1945. The amount of setup and labor that went into it is truly astonishing and no doubt inspiring, but let's not forget that set up and labor are the two biggest costs of a machine shop. CNC reduces those dramatically.
This has been a very interesting discussion, but as far as our hobby is concerned, I don't feel that it's productive. Discussing the economics of CNC vs Manual is only useful if it's putting food on the table. This is a hobby. The most important thing for its survival is that its participants and suppliers are interested in building. How this is accomplished is irrelevant.
Keep on making chips every one, whether it's with a chisel or the most cutting edge technology, just keep on doing it.
- JBodenmann
- Posts: 3865
- Joined: Sun Oct 26, 2003 1:37 pm
- Location: Tehachapi, California
Re: WHO NEEDS CNC?
Hello My Friends
Use the materials and techniques that you are comfortable with. The important thing is that YOU ACTUALLY MAKE THINGS, and don't just wag yer' chin. My hat's off to those that make things. The methane producers and criticizers well....
Happy model building.
Jack
Use the materials and techniques that you are comfortable with. The important thing is that YOU ACTUALLY MAKE THINGS, and don't just wag yer' chin. My hat's off to those that make things. The methane producers and criticizers well....
Happy model building.
Jack
- Steamchris
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Re: WHO NEEDS CNC?
Hi Guys,
i wont missing the advantages of CNC, if i havent use a cnc for milling my frame of the 611 it wont be possible to use roller bearings on axles and rods. You cant produce 2 parts with a tolerance under 0.01mm with a standard Mill. Im going with Jack,to do something is important!!
And everybody who things CNC is easier then normal milling is wrong, it is different.
With best Regards
Chris, professional CNC worker
i wont missing the advantages of CNC, if i havent use a cnc for milling my frame of the 611 it wont be possible to use roller bearings on axles and rods. You cant produce 2 parts with a tolerance under 0.01mm with a standard Mill. Im going with Jack,to do something is important!!
And everybody who things CNC is easier then normal milling is wrong, it is different.
With best Regards
Chris, professional CNC worker
The light at the end of the tunnel could be a train
Health and Safety Notice
due to the current economic circumstances , the light at the end of the tunnel
has been switched off !
Health and Safety Notice
due to the current economic circumstances , the light at the end of the tunnel
has been switched off !
- Trainman4602
- Posts: 3482
- Joined: Sat Oct 16, 2004 9:26 pm
- Location: New Jersey
Re: WHO NEEDS CNC?
I agree about the difficulty in machining a part on any machine be it CNC or manual. What I do disagree on is that You say you would not be able to make your frames without a CNC mill if that is the way I read it.
ALLWAYS OPERATING MY TRAIN IN A SAFE MANNER USING AUTOMATIC AIR BRAKES
- Steamchris
- Posts: 487
- Joined: Fri Jan 27, 2012 3:48 pm
- Location: Duisburg/Germany
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Re: WHO NEEDS CNC?
Hey,
it is possible, but not with the tolerances i want to have for using roller bearings all out on my timken runing gear.
You need the accuracy nearly zero who to use roller bearings.
You can mill all the radii and difficult shapes of the frame with only 1 tool, if you're trained to program the machine you do it in a very acceptable time and the accuracy of CNC is the biggest advantage in my eyes. One Problem i
have, im not so good in the manuel way, so my hat is of to all the guys out there , doing the jobs by the old school way.
I think it is no shame to use new and useful manufacturing technology for our hobby.
Best thing you can combine both arts.
So dear Trainman keep that good stuff coming , i like watching your Videos, you are an "old" school master guy
i always learn something.
All the very best
Chris
it is possible, but not with the tolerances i want to have for using roller bearings all out on my timken runing gear.
You need the accuracy nearly zero who to use roller bearings.
You can mill all the radii and difficult shapes of the frame with only 1 tool, if you're trained to program the machine you do it in a very acceptable time and the accuracy of CNC is the biggest advantage in my eyes. One Problem i
have, im not so good in the manuel way, so my hat is of to all the guys out there , doing the jobs by the old school way.
I think it is no shame to use new and useful manufacturing technology for our hobby.
Best thing you can combine both arts.
So dear Trainman keep that good stuff coming , i like watching your Videos, you are an "old" school master guy
i always learn something.
All the very best
Chris
The light at the end of the tunnel could be a train
Health and Safety Notice
due to the current economic circumstances , the light at the end of the tunnel
has been switched off !
Health and Safety Notice
due to the current economic circumstances , the light at the end of the tunnel
has been switched off !
Re: WHO NEEDS CNC?
Yes Sir, I could also make a one piece handle on a Chucker.
- Trainman4602
- Posts: 3482
- Joined: Sat Oct 16, 2004 9:26 pm
- Location: New Jersey
Re: WHO NEEDS CNC?
To make that exact type handle I would make it in two pieces
ALLWAYS OPERATING MY TRAIN IN A SAFE MANNER USING AUTOMATIC AIR BRAKES
Re: WHO NEEDS CNC?
I can't imagine the setup involved in manually machining that turbine impeller.
Steve
Steve