jdlvfr
24-05-2022, 10:43 AM
Hi all,
the project is taking shape, first drawings and more questions...
Rough working area :
X- 470mm
Y- 750mm
Z- 240mm
The gantry is L shaped 80 x 120 heavy profile and its running on two 80 x 200 heavy profiles in the Y axis. The bed is 20 x 180 profile on top of 80x40 profile.
20mm linear rails, 1610 and 1605 for Z ball-screws.
I would like to be able to work primarily in aluminum, cutouts in 3mm to 10mm thick aluminum sheets. Plastic sheets and wood. Cutting wood is the reason of high Z travel capability.
Z design doesn't follow usual advice for fixed bearings and moving rails because I need full Z extension from the table to the gantry.
I tried to overcome the lost of rigidity with side brackets on Z plates. Would this works? Or should I stay with usual design?
In my understanding stiffness shouldn't suffer at low Z where X and Z axis bearings are close from each other. Alu cutting will be at low Z close to the bed. High Z will be for wood cutting where stiffness demands are less. Does this makes sense?
Thanks
joël
31053
31054
31055
31056
the project is taking shape, first drawings and more questions...
Rough working area :
X- 470mm
Y- 750mm
Z- 240mm
The gantry is L shaped 80 x 120 heavy profile and its running on two 80 x 200 heavy profiles in the Y axis. The bed is 20 x 180 profile on top of 80x40 profile.
20mm linear rails, 1610 and 1605 for Z ball-screws.
I would like to be able to work primarily in aluminum, cutouts in 3mm to 10mm thick aluminum sheets. Plastic sheets and wood. Cutting wood is the reason of high Z travel capability.
Z design doesn't follow usual advice for fixed bearings and moving rails because I need full Z extension from the table to the gantry.
I tried to overcome the lost of rigidity with side brackets on Z plates. Would this works? Or should I stay with usual design?
In my understanding stiffness shouldn't suffer at low Z where X and Z axis bearings are close from each other. Alu cutting will be at low Z close to the bed. High Z will be for wood cutting where stiffness demands are less. Does this makes sense?
Thanks
joël
31053
31054
31055
31056