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  1. #1
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    Default New machine thread: CM-1

    Quote Originally Posted by LOTT View Post
    Where's the new machine thread? I know you needed a small mill with a high RPM, but I'd like to hear what all led to that particular machine.
    Haas impressed me with the performance of the 2015 VF-3SS with trunnion I'd been using for six years, where I'd been running a one-man prototype and short-run shop for a medical device company. They decided to become a virtual company (a few managers in offices, jobbing out absolutely everything physical), and began the process of shutting down. I was allowed to use the facility for free to begin growing my business, and it's been taking off splendidly.

    My clients' parts range from the size of a grain of rice to 7", Titanium to plastic, and I figured it best to start with minimal overhead. So I wanted a machine with full industrial quality, high RPM, and 5 axis capability, that I could fit in the garage with enough space left for inspection etc. Single phase was a bonus.

    We got it with a fourth, an wired for 5. 36 tools, 50,000RPM.


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    But but but you should have got a brother

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    Quote Originally Posted by plastikdreams View Post
    But but but you should have got a brother
    Nah he should have got a kern or a hermle

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    Congratulations Matt and all the very best!

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    Quote Originally Posted by Ianagos View Post
    Nah he should have got a kern or a hermle
    There's always machine #2...

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    Quote Originally Posted by plastikdreams View Post
    But but but you should have got a brother
    Or a 40x20 with an 8K spindle, depending on who you ask...

    Is having the 4th only going to be a big limitation compared to the 5th you have been running? What will the cubic size limit be of a 5 axis trunion on the CM?

    What is a "normal" machine for medical implants? Would it be a Kern? It seems like you've been on the large and now small sides of the equation, making it happen. I see the swiss lathe promo videos making crazy parts, but setting those up for one-off parts seems painful.

    Can you share pictures of parts you've run? I'm trying to imagine a rice grain sized part and coming up short.

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    I'll be able to do all of my current clients' existing repeat parts in 3 or 4 axis, with suitable fixturing. I need a couple months of paid invoices and then I can add the fifth, a TRT70, which has a 4" diameter work envelope for positional, or 1" for live 5 due to torque limitations. If business continues at its current pace, I should be looking at machine #2 within a year, hopefully something a little larger. Then after a couple years probably getting a space, moving out of the garage, and some larger, higher performance machines and a good quality CMM, and maybe a Swiss.

    The bone plates I was doing were for the company that shut down; my current clients' parts generally are much simpler. But with the fifth I'll have more versatility to take on more challenging work and more clients.

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    I'm still wondering how you are gonna do this without having a brother...they are the only pm approved garage machine and the choice of like 10 other pm companies to use. [/sarcasm]

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    Quote Originally Posted by plastikdreams View Post
    I'm still wondering how you are gonna do this without having a brother...they are the only pm approved garage machine and the choice of like 10 other pm companies to use. [/sarcasm]

    The rest of us our wondering why you are trolling Mike's thread.

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    Hi mhajicek:
    Welcome aboard the club of guys with their own machines...I'm stoked for you and just a little bit envious.
    I've had my eye on a CM1 with a TRT 70 for a while now but haven't pulled the trigger because I'm getting on in years and not too eager to commit only to fall over dead from a heart attack the next day, leaving my Lovely Wife with even more of a pile of gear to get rid of.

    Definitely envious though, especially of that spindle speed.
    I'm still limping along with a Minimill bought new in 2001...6 whole thousand RPM, (WooHoo), and it's painful to try to use a 0.010" cutter for our kind of work at those kinds of speeds.

    So which spindle option did you choose?
    I assume you got probing and a tool setter and all the other goodies too.

    I will be looking forward to hear how you like the machine...if you speak highly enough about it I just might swallow my apprehensions and pull the trigger too, so I'll be watching with great interest as you post about how it's all working out for you.

    All fingers and toes are crossed for your success, and if there's anything I can do to help you out as you come up to speed, give me a shout.

    Cheers

    Marcus
    Implant Mechanix • Design & Innovation > HOME
    Vancouver Wire EDM -- Wire EDM Machining

    Whoops I see you already posted your spindle choice...now I'm REALLY jealous!

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    Quote Originally Posted by LOTT View Post
    Or a 40x20 with an 8K spindle, depending on who you ask...

    Is having the 4th only going to be a big limitation compared to the 5th you have been running? What will the cubic size limit be of a 5 axis trunion on the CM?

    What is a "normal" machine for medical implants? Would it be a Kern? It seems like you've been on the large and now small sides of the equation, making it happen. I see the swiss lathe promo videos making crazy parts, but setting those up for one-off parts seems painful.

    Can you share pictures of parts you've run? I'm trying to imagine a rice grain sized part and coming up short.


    The small PEEK part in this image is about the size of a grain of rice. You can hold a thousand of 'em in one hand. I wouldn't want to make 'em in a VMC though.


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    Quote Originally Posted by implmex View Post
    So which spindle option did you choose?
    I assume you got probing and a tool setter and all the other goodies too.
    Yep, got probing, 50K RPM, basically all the bells and whistles. I'll try to keep you informed.

    Thanks!

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    For those who haven't seen the cute little ISO-20 toolholders:

    Making an ISO 20 Tightening Fixture - YouTube

    They don't have lug slots like larger holders, and the wrench flats come in different sizes, so you can't have a universal toolholder tightening station. With the assortment of holders I got I'll need three different tightening stations.

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    This machine has me curious so I did a search and found an interesting video of them being made. I always like to see machines with their covers off exposing the castings, ways, and screws. Check the video out at 2:20



    It would be interesting to see your machine make some stuff, even if it's just simple parts for fixturing or such. There are not many videos of it making parts and none without music. I am curious about how stable it can machine.

    Does that 50k spindle have cooling? How long can it run at 50k? or 30k?

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    Quote Originally Posted by DavidScott View Post
    It would be interesting to see your machine make some stuff, even if it's just simple parts for fixturing or such. There are not many videos of it making parts and none without music. I am curious about how stable it can machine.
    I'll record and post some stuff when I'm up and running.

    Quote Originally Posted by DavidScott View Post
    Does that 50k spindle have cooling? How long can it run at 50k? or 30k?
    I didn't see anything about a cooling system, but I also haven't seen anything about a duty cycle.

    cm-1-50k-spindle.jpg

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    50k is spinning pretty fast so at first be aware of the spindle temps. All I found said "air cooling". What is the warmup routine for the spindle? Those certainly are cute little holders.

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    Quote Originally Posted by DavidScott View Post
    This machine has me curious so I did a search and found an interesting video of them being made. I always like to see machines with their covers off exposing the castings, ways, and screws. Check the video out at 2:20



    It would be interesting to see your machine make some stuff, even if it's just simple parts for fixturing or such. There are not many videos of it making parts and none without music. I am curious about how stable it can machine.

    Does that 50k spindle have cooling? How long can it run at 50k? or 30k?
    Lol @ 55secs with the drawing on the Hori control covering up Hitachi Seiki

    Nice looking machine with the guards off - ratios of pitch of rails and sizes etc look sturdy for this size of machine.

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    Quote Originally Posted by implmex View Post

    Definitely envious though, especially of that spindle speed.
    I'm still limping along with a Minimill bought new in 2001...6 whole thousand RPM, (WooHoo), and it's painful to try to use a 0.010" cutter for our kind of work at those kinds of speeds.
    I'd be looking at upgrading the spindle RPM - the 10k option for your machine is also belt drive.
    Might be a lot cheaper and easier than you think to do this....?

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    Quote Originally Posted by LOTT View Post
    The rest of us our wondering why you are trolling Mike's thread.
    Just having a little fun my man

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    Quote Originally Posted by TeachMePlease View Post
    The small PEEK part in this image is about the size of a grain of rice. You can hold a thousand of 'em in one hand. I wouldn't want to make 'em in a VMC though.

    Got me beat, smallest I've done is chicklet size ��


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