Damaged BT30 spindle. grrr - Page 7
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  1. #121
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    Quote Originally Posted by wheels17 View Post
    Assuming that you run the same job on multiple machines, set one up with a set of the best toolholders and one with a set of the worst toolholders. I would think the difference would soon be very evident in the quality and yield.
    Thats a good idea, thanks

  2. #122
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    Quote Originally Posted by DevinJB View Post

    Its going to be a slow process making any improvements.
    +1xBillTrillion

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  4. #123
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    I hate places like that.

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  6. #124
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    Quote Originally Posted by plastikdreams View Post
    I hate places like that.
    It's why I suggested looking around for other options. That sort of mindset can make life miserable for people working there.

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  8. #125
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    I've been there...

    Interview; we are a progressive company and we are looking for someone to take our capabilities to the next level.

    Trying to change things: we don't want to change anything as this has worked for us in the past.

    Changing something for an example:
    Worker: I just saved you 3 hours per part, the end mill I used costs 50 dollars more than the one you were using and lasts 3x as long.
    Boss: I don't think we can swing the extra cost for that endmill.

    It literally leaves you shaking your head lol.

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  10. #126
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    Quote Originally Posted by plastikdreams View Post
    I've been there...

    Interview; we are a progressive company and we are looking for someone to take our capabilities to the next level.

    Trying to change things: we don't want to change anything as this has worked for us in the past.

    Changing something for an example:
    Worker: I just saved you 3 hours per part, the end mill I used costs 50 dollars more than the one you were using and lasts 3x as long.
    Boss: I don't think we can swing the extra cost for that endmill.

    It literally leaves you shaking your head lol.
    GRERRRRR!!!!

    If we use A SINGLE $50 endmill, we can have the job done in 8 hours. If we use
    those $15 HSS POS's it takes 40 hours and we use 10 endmills..

    But its $35 more for your endmill.

    BUT WE ONLY NEED ONE!!!!!!

    But its $35 more.. Duhh...

  11. #127
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    Quote Originally Posted by Bobw View Post
    GRERRRRR!!!!

    If we use A SINGLE $50 endmill, we can have the job done in 8 hours. If we use
    those $15 HSS POS's it takes 40 hours and we use 10 endmills..

    But its $35 more for your endmill.

    BUT WE ONLY NEED ONE!!!!!!

    But its $35 more.. Duhh...
    You can't fix stupid

  12. #128
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    So this was a brand new maritool with exactly 160 tool changes on it. Still got dents all around it

    The tj davis with 5000 changes look better still.


  13. #129
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    img_0581.jpg
    I found some Iscar brand pull studs. Ground on the OD surfaces like the JM version.
    $21.50 each.
    Seems like a quality stud, well priced and from a big name.

    These are now my new 1/4 to 3/8 tool holder retention knobs.

    So JM for anything capable of holding 3/8 or larger cutting tools
    Iscar studs for things in the 1/4-3/8 tool range.
    Maritool studs for all things 1/4" and under.

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  15. #130
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    Quote Originally Posted by Ianagos View Post
    So this was a brand new maritool with exactly 160 tool changes on it. Still got dents all around it

    The tj davis with 5000 changes look better still.

    How many balls are there? I only see one divot, and I would expect to see at least 4 or 5.

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  17. #131
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    Quote Originally Posted by DavidScott View Post
    How many balls are there? I only see one divot, and I would expect to see at least 4 or 5.
    Which leads to the question, are these pullstuds even concentric thread to shoulder...

  18. #132
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    Quote Originally Posted by plastikdreams View Post
    I've been there...
    "Now's not the time for improvements, we're struggling. Wait until things are going well."

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  20. #133
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    Quote Originally Posted by DavidScott View Post
    How many balls are there? I only see one divot, and I would expect to see at least 4 or 5.
    This is a 3 ball gripper


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    Quote Originally Posted by Ianagos View Post
    This is a 3 ball gripper
    That's new to me, I've never seen so few balls for drawbar retention. This is a Brother?

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  23. #135
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    Quote Originally Posted by DavidScott View Post
    That's new to me, I've never seen so few balls for drawbar retention. This is a Brother?
    Brother speedio s700x2 with a 27k spindle

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    Quote Originally Posted by DavidScott View Post
    That's new to me, I've never seen so few balls for drawbar retention. This is a Brother?
    #Meetoo!
    That amazes me with just the 3!

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    Mori Seiki 30 taper uses 3 balls. 6mm diameter. Can’t really get more than that around the pullstud head without making the section of the retainer between balls too thin.

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    My 30 taper Enshu has 6. Not a lot of space between them but then I have never had a problem in 17 years. I have just never seen less than 6, yet.

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    I suspect the Enshu is using smaller diameter balls with a thinner walled retainer. It’s all a trade off of sizes and pressures.

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    I've only had one pull stud break on my Brother and it was a Maritool as well. 3/8 endmill taking light passes in steel, though I never checked them for signs of wear. Will definitely be paying more attention to them in the future.
    For high production shops do they routinely replace studs every X changes (or hours? or both?) like monitoring tool life and swapping tools every X hours? I realize they are something of a consumable I just never thought much about how often they should be 'consumed'


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