Has anyone converted a Hardinge TFB or HLV-H to Centroid CNC?
I have a TFB that I would like to convert to CNC. I have a pretty good idea of all the elements needed. I found an old post where “tblough” added Hiwin ball screws and I even found the Hiwin drawings for the ball screw he used. I need advice or a drawing for the attachment of the ball screw nut to the carriage.
Any help with this project would greatly be appreciated.
Hardinge TFB conversion to CNC
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Re: Hardinge TFB conversion to CNC
Here's a STEP version of the ballscrew mount I came up with. Mount dimensions depend on where/how you mount the Z motor and ballscrew bearing block, your bed height, and what exact carriage you happen to have. I left a little extra on the mounting face for scraping in, and left the dowel pin holes undersize for reaming after installation.
- Attachments
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- Ballscrew Mount.zip
- (30.54 KiB) Downloaded 50 times
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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Re: Hardinge TFB conversion to CNC
The step file helps me to understand the mounting of the nut to the carriage.
In looking over the HIWIN shop drawings I see support units, one for the z-axis ball screw and one for the x-axis ball screw. Where these support units used where the drive motor pullies were mounted. If so how was the z-axis ball screw supported at the end closest to the headstock?
In looking over the HIWIN shop drawings I see support units, one for the z-axis ball screw and one for the x-axis ball screw. Where these support units used where the drive motor pullies were mounted. If so how was the z-axis ball screw supported at the end closest to the headstock?
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Re: Hardinge TFB conversion to CNC
Forgive me I did not look closely enough at the pictures, I now see the z-axis ball screw is free-floating on the left end (closest to the headstock end)
Could you provide me with the step file for the attachment of the x-axis ball screw nut?
Could you provide me with the step file for the attachment of the x-axis ball screw nut?
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Re: Hardinge TFB conversion to CNC
Here's a couple of shots of how the X-axis ballscrew is attached to the cross slide. I cut off the cross slide tail (since you no longer need to use the taper attachment) and attached a block to the end of the cross slide. You'll need to machine clearance in the cross slide for the ballscew nut, and you'll probably need to widen/deepen the screw alleyway in the cross slide as well.
- Attachments
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- Ball Nut Mount.zip
- (59.86 KiB) Downloaded 45 times
Last edited by tblough on Sun Nov 26, 2023 8:43 am, edited 1 time in total.
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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- Posts: 18
- Joined: Mon Dec 20, 2010 8:19 am
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Re: Hardinge TFB conversion to CNC
Thank you for the step file of the X-axis attachment. This is extremely helpful and very kind of you.
Would provide me with the step files for the motor, pulley, and ball support mounts?
Thank you
Would provide me with the step files for the motor, pulley, and ball support mounts?
Thank you
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Re: Hardinge TFB conversion to CNC
Do you prefer the Oak board as to the Allin1dc as with the Oak you can use ac servos?
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100327
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Re: Hardinge TFB conversion to CNC
I'm using Oak and ABB AC servos and drives. TheAllIn1DC and DC drives work just as well. I have those on my mill.
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.