The assignments for wk7 were as below;
Machine set up of Shopbot
Below is the set up process of 2D cutting on Shopbot:
end-mill. If not, noisy sounds will be occurred by machine, you have to choose appropriate end-mill, cosidering the
thicknessof the material.
Partsworks 2D, which is the supporting software to prepare the cutting blueprint, read the design file and set the cutting path to
tool pathon supporting software. And save it as another file. You can also add
tabsto each cut parts.
Shopbot3, which is the software for controlling Shopbot, and read the saved file above. Before cutting, you have to
x and yand
A. Fixed Test
To begin with, I would like to check what width and thickness of the fixed point is suitable, so I made the file as below.
Fixed point test
Download PDF file
From the result, I found that 9mm(just same as the width of parts) is the best width to fix each parts.
9mm is the best
Also, I tested the suitable width of putting the parts. I found that the best width to fix is also same as the joint part.
Also, this test showed the limitation of proximity of each cutting lines as below.
B. Pattern Test
Next, I would like to somthing bending, then I tried some patterns which seemed to be bended as below.
During this process, I refered the sites;
Then, I started to cut, however, the problem has occured. The problem was that I forgot to put tabs on eliminated parts, so these parts moved around and the end mill cut wrongly as below.
Designing the blueprint
I felt like to make somthing useful for me, so I decided to make the table which can be used when I sitting the chair in my room as below.
First, I drew the blueprint using Fusino 360 because it is rich in support functions for drawing blueprints.
Then, I cut the parts. I used the seting as below when I cut the blueprint;
End mill: 3mm
Feed speed: 70mm
Turn over: 3.2
After cutting, I found one problem. It was not cut cleary because the plywood board was not fixed to sacrificial layer tightly. Then I had to eliminate the unnecessary parts using sand papers.
Next, I used sand paper and varnishing to polish the sarfase.
varnishing to polish
ConstructionThen, I succeeded to make the table. As a refrection, I had to add more fixed bridges under the top surfase because the fixness of the table was a bit looth.
Computer-controlled cut table
1. Practice - desing test
2. Practice - table
3. Practice - basket
Here are my output files for week7:
Here you can find this weeks's lectures on VIMEO: