Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: oldmechano on August 15, 2012, 04:15:22 PM
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Hello All,
It's been a while since my last post... My business partner is looking at building a CNC Mill (see picture) and the only hold up for him is if we can easily use
LazyCam to import DXF files to do 2D profiles and holes. I imported a simple DXF of a profiled plate with some drilled holes but that's about as far as I got.
He seems unconvinced that it is going to be easy to learn, I have a demo version linked to our licenced version of Mach 3 but find it to be not so user friendly and in demo mode unable to post results to show him.
If I can't convince him to use Mach 3 with LazyCam is there an easier to use software with a built in post processor that can be cheaply purchased? Some input from LazyCam user would be helpful or if you are using something different I would like to here about that also.
Our budget for the machine is around $10K (includes a 6K package for controls/motors/boards etc) the table is 3'x4' with a custom 110V spindle.
He says he does not want to waste too much time at a terminal to fix up files to get them to run properly or else it would be easier to use a conventional mill...
Any input on the learning curve with LazyCam would be appreciated.
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Take a look at SheetCAM, MeshCAM, and CamBam. Which one is best depends on how you work, and what you need to do. All are inexpensive, well-supported, and light-years better, and more stable, than LazyCAM.
Regards,
Ray L.
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Id tell him to turn the control box around. Opening from the inside of the base will be a PITA to access. Lot easier to sit on the outside looking in. And i would move the stepper motor to the other side closer to the controls. Bigger feet and some cross angle supports. Depending on the Cad program he is using will determine the CAM package. Dolphin Cam has some great deals for the Hobby guys. not the latest software (version 11) but version 10 does more than most will ever need.
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There is a manual for LazyCam in Members Doc's. LC is what it is and the developement stopped a long time ago.
Yes it is easy to use,quick if you can provide a good dxf for import to it, but it has it's limitations and more for hobbiest use.
Your in buisness and you will probably grow out LC and echo what Ray posted. There are others that should be considered.
So you need to think not only about today but the future.
No matter what software you choose you will have a learning curve.
Your software investment is just as important as your machine investment so budget for appropriately.
RICH
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I model in Catia V5 and SolidWorks so I have that covered...
We have already built a previous NC machine for a customer using the same type of frame and components - it has been running limited production for about 2 years now.
We plan to mill aluminum, plastic, and wood, we only plans to drill steel plates - no milling steel because of vibrations (non cast base)
My previous programming was done on Catia because I already had that capability plus they were simple 2D point to point programs with less than 300 lines so I just manually edited them till they were correct.
I have the LazyCam operators manual but have not read it, I will try to see if I can use it but I already think it may get kicked to the curb.
Doing longer programs in 2.5 or 3D would be challenging using Catia so these other programs that you have suggested I have downloaded and I am going to evaluate them to see which one would suit our needs.
Thanks for the input.
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For basic 2D work, check out Vectric's Cut2D. You won't find anything easier to use.
You use $10,000 worth of CAD software, and have a $10,000 machine budget, but are looking for cheap software to make it all work together??
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The software's I already had (old versions) and the machine is going to be built in stages so not all the $$ gone at once... I didn't say I was looking for cheap software but something like a MasterCam or SurfCam might not make sense for a home built machine especially in at an evaluation stage.
We have already used Mach3 on another machine so we thought it would be easier to get something simple that works with it.
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SheetCAM would work very well for this type of machine. I use it heavily, its solid and is well supported.
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take a look at D2NC a very good product for the price and no big learning curve has nesting of parts and you can setup 9 different operations at one time.
Dennis
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Can you edit the post for your CAM programs? What type of programming will your customer be writting. Buying software without all the options will end up costing you double.
I learnd the hard way at my job. Cheap softawre was upgraded until we neede a high end program. I am just saying look at the end game. If 2-1/2d is all that is neede the buy that level of program. If you think about true 3d and a 4th axis, get that level of software.
Hal
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Another vote for SheetCAM. We have ArtCAM, RhinoCAM and VisualMill...And I Use SheetCAM 99% of the time. The ability to use programming logic like if...then...else, etc. in post processors makes it capable of a lot of things that the others are not.
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I changed the design a bit, not using a spindle motor now. Decided to use a 1 HP conventional 110V motor and drive it with some intermediate pulleys to get the tool in the 9000-500 RPM range, built a R8 spindle housing to use the collets I already have.
It's slowly coming together...
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Looking good!
Brett
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Nice work,
I especially like the way that you counterbalanced the Z by putting the motor onto the backside of the machine.
Mike
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Thanks.
Everything attached to the main gantry rail is aluminum except for the motor. I am mounting a 6 inch precision vice (yellow block) on the frame and a rotary head beside it. The work table is 5/8" Blanchard ground plate. The side plates are water cut 1" 6061 plate.
There is a slight issue with frame sag because of the gantry weight but it is being solved with a table brace and some center jack screws.
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Good to see a nice clean and tidy wiring job :)
Hood
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Got all the hard parts built... now doing cable/air/wire management, mounts for control box/laptop, then strip it down for paint.
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Why in the world are you going to cover up all that eyecandy with some ugly paint? ;D
Looking great!
Brett
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Been busy with "real" work so it has been on that back burner as of late... only going to paint the steel parts.
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Neat work so far, may I ask if you have a build thread on your R8 spindle that goes up to 9000 RPM's?
Do you possibly have a picture of it in pieces and showing/naming what bearings you used?
Thanks, and great work you have done-
Dave
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Oh yeah, coming along nicely. :) Thanks for the update!
Brett
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Neat work so far, may I ask if you have a build thread on your R8 spindle that goes up to 9000 RPM's?
Do you possibly have a picture of it in pieces and showing/naming what bearings you used?
Thanks, and great work you have done-
Dave
No build thread for it... the spindle I bought online, I can't remember the bearings numbers off hand, they are Metric Japanese (30/40MM) and my supplier said they are capable to 14K, a high speed roller bearing - I do know from being a motorcycle guy that the same type of bearings are in the Kawasaki 900/1000 crankshafts and they can spin up to 12K, 10K sustained for a hour in the Daytona speed trials they did 40 years ago... they use a low pressure splash oiling system.
9K is TBD at this point, my main concern is the cast aluminum V pulleys up top... not concerned about the spindle build and that cogged belt pulley setup down below - that should be able to take that type of RPM, but I think those V pulleys are the weak spot - I may have to machine some pulleys out of billet to cope with higher RPMs... realistically I also don't know how rigid this setup will be untill I fire it up... its a bit of a gamble.
I am planning to put grease/oil ports at every bearing when I tear it apart, it will make it easier to service... I am also going to gang all the ports for the square axis bearings to a single feed cup on each side of the gantry and the spindle head.
I am also planning to put another pinch clamp on the bottom of the spindle housing to attach a router motor.