Hoss ATC Project


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Thread: Hoss ATC Project

  1. #1
    Gold Member hoss2006's Avatar
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    Default Hoss ATC Project

    Hey Gang,
    Can anyone tell me the total length of the R8 drawbar for the X3?
    Also, any source to buy a replacement?
    Grizzlytools shows one in their parts list but doesn't give the length.
    Thanks Hoss

    Similar Threads:
    Last edited by hoss2006; 09-25-2007 at 03:29 PM. Reason: Decided to document the Automatic Tool Changer project in a new thread, The other one is getting a little big


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    Gold Member hoss2006's Avatar
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    OK Great, thanks.
    Still would like to know the length first to see if it will work for what i had in mind.
    Thanks Hoss



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    i know it can be hard to find length of draw bar online, unless someone has posted on forum or something. Couple weeks back i was trying to find length of Bridgeport M head draw bar to make my own, but had no luck, ended up buying used one localy



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    Registered M100's Avatar
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    From a UK supplied X3 R8 with metric leadscrews:

    Length from bottom of head to end of thread 10.75" 273mm
    Threaded length 1.25" 32mm
    Thread 7/16" - 20tpi (UNF)
    Head across flats 17mm



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    Gold Member hoss2006's Avatar
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    Thanks M100,
    As I was thinking it's a little long for what I want.
    I made my own about 6 5/8 long.
    Can you guess what it's for?
    Power Drawbar.
    Step one of the ATC.
    Hoss

    Attached Thumbnails Attached Thumbnails Hoss ATC Project-img_1039_800x600-jpg  


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    Quote Originally Posted by hoss2006 View Post
    Thanks M100,
    As I was thinking it's a little long for what I want.
    I made my own about 6 5/8 long.
    Can you guess what it's for?
    Power Drawbar.
    Step one of the ATC.
    Hoss
    Very nice I look forward to seeing this ATC project unfold.

    Have you sorted out mist/flood coolant yet - I would have thought that it's essential if you want to run unattended?



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    Gold Member hoss2006's Avatar
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    Hey Digits,
    I decided on flood coolant with an enclosure made from wood covered with a
    few coats of Herculiner liquid truck bed liner.
    The ATC will be a little more fun to tackle so I'm gonna do it first.
    Hoss



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    Hey hoss, just take a depth gage stick it in the spindle upside down , get that measurement , then measure from the top of the drawbar nut to the bottom of spidle and deduct your first measurement.



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    Hey Hoss. Great to see you starting this! I cant wait to see what you come up with. I'm slowly getting things on paper to start designing my own as well. A quick question. How much force is required to hold the tool holder? The LMS one says they're doing 1000lbs. Thats going to take a huge air piston to move at 100psi.

    Thanks!



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    Gold Member hoss2006's Avatar
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    Hey Red,
    I read somewhere that 600 lbs is enough force to hold a tool in an R8 collet.
    So far I've found these cheap Bimba's at Surplus Center that put out 440 lbs.
    With leverage, it should work just fine. At only $3.95, it's worth experimenting with.
    Probably get a few just to have them.
    The cam and lever only needs to move the collet about 1/8 inch I figure.
    Later Hoss
    http://www.hossmachine.com



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    Awesome. Thanks for the info.

    (removed post because I'm stupid)



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