View Full Version : NEW MEMBER: Hello from Iran

24-04-2014, 09:02 PM
Hi everybody
I want to make laser cutting router to cut textiles (stacked on up to 120 mm in height) . I welcome any proposal and suggestions.

24-04-2014, 11:26 PM
Co2 laser machine parts including laser head mirror mounts tube support belt fixutre speed reducer gears-in Laser Equipment Parts from Industry & Business on Aliexpress.com (http://www.aliexpress.com/item/Co2-laser-machine-parts-including-laser-head-mirror-mounts-tube-support-belt-fixutre-speed-reducer-gears/944985432.html)

have a look at something like this on aliexpress

10-05-2014, 03:15 PM
Hi all

Finally I made my first CNC skeleton model in Autodesk Inventor.
- The structure is composed of square hollow sections of size 100x100x6 mm
- Structure weights about 555 kg
- Dimensions: 2500x1500x500 mm (LxWxH)

I analyzed it to find its natural frequencies. I found the following data:
- 1st Mode: modal frequency: 60.69 Hz - maximum displacement: 151.2 mm (too high! I think if I use ANSYS more precise results could be found)
- 2nd Mode: modal frequency: 66.76 - maximum displacement: 151.2 mm.

I don't know any thing about acceptable ranges for frequencies and their corresponding displacements in CNC machines.

Here you can see the model and modal analysis results:


Thanks for any suggestions


10-05-2014, 08:52 PM
I analyzed the structure in ANSYS. Results are better and more hopeful but the question remains: What is the preferred (acceptable) range for frequencies and relevant deformation in CNC machines like the one that i am going to build? Any suggestions? Thanks.

11-05-2014, 11:47 AM
Have you seen evidence that a laser will cut through that thickness of material. I would imagine the power needed to slice through that much fabric would charr the edges and set the material on fire. I don't know what your budget is but if you really need a laser to do this you are not talking about hobby prices think 10's of thousands. I think a knife or recipricating saw blade is what is commonly used for thick stacks. How detailed are the cutting patterns you what to cut?