To achieve a high precise 3 axes alignment
To achieve a high precise 3 axes alignment
(OP)
I want to develop and mount an L-shape profile (highly precised finished) on a 3 axis milling machine (XY-Bed, and vertical axis Z).
Mounting:
Mounting will be done with 8 screws. 4 screws will be used to mount base of the L-Shape profile with XY-Bed of the machine. Rest of 4 screws will be used to mount the back of L-Shape profile with Z-Axis of the machine.
It is required to achieve a perfectly aligned mounting of L-Shape profile with all three machine axes within 1µm accuracy.
Questions:
Could it be achievable? If yes, how to achieve it?
Is 8 screw mounting is OK? If not, which other mounting design could be more suitable?
Extra Info: The L-Shape profile has linear slides and bearing between its base and back. Thus machine can be operated in all three axes even after mounting the profile.
Thnaks
Mounting:
Mounting will be done with 8 screws. 4 screws will be used to mount base of the L-Shape profile with XY-Bed of the machine. Rest of 4 screws will be used to mount the back of L-Shape profile with Z-Axis of the machine.
It is required to achieve a perfectly aligned mounting of L-Shape profile with all three machine axes within 1µm accuracy.
Questions:
Could it be achievable? If yes, how to achieve it?
Is 8 screw mounting is OK? If not, which other mounting design could be more suitable?
Extra Info: The L-Shape profile has linear slides and bearing between its base and back. Thus machine can be operated in all three axes even after mounting the profile.
Thnaks





RE: To achieve a high precise 3 axes alignment
h
RE: To achieve a high precise 3 axes alignment
Ted
RE: To achieve a high precise 3 axes alignment
If you are actually trying to do an alignment, then you can achieve arcsec accuracy with an autocollimation approach against your reference surfaces.
Positioning accuracy could be do with micrometers or interferometers against your reference surfaces.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: To achieve a high precise 3 axes alignment
RE: To achieve a high precise 3 axes alignment
State of the art interferometers for this purpose are not cheap.
RE: To achieve a high precise 3 axes alignment
I would be using then using laser interferometer.
Could there be a better mounting mechanism? Current design is based on 8 normal screws passing through L-Shape-profile and attaching it with machine bed and Z-axis.
Information about the final task:
I am planning to design an equipment to monitor the 3D- machine path at TCP. The equipment will contain positions sensors which could give the 3D path measurement directly at TCP.
The body/assembly of the equipment will be the L-Shape profile. the base and back of the profile can move relative to each other. The concept will only work if the profile would be aligned very precisely with all three machine axis. Any misalignment in profile with directly influence the measurement of the 3D path.
Thanks
RE: To achieve a high precise 3 axes alignment
TCP????
Doesn't your mill already have position sensing? How does it even know where it is when it's milling?
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: To achieve a high precise 3 axes alignment
The Mill do has its position sensing. But I plan to develop an additional for performance monitoring purposes (fine calibration of machine). Thus will monitor the position right on TCP.
RE: To achieve a high precise 3 axes alignment
Just do a search for machine tool alinement, lots of laser type alinement systems come up. Save some headaches.