Modular soft robots_2

PART 2 of 4

For PART 1 click here
For PART 3 click here
For PART 4 click here

For the second iteration I wanted to test out a helical spring shape for the inner core of the actuator. The idea was to inflate a spring shaped hollow chamber to achieve linear extension, much like stretching a helical compression spring.

IMG_20180409_174400621_HDR
I quickly made a spring with thick aluminium wire coiled around a chisel
IMG_20180409_184001996
I put together a mold with these basic components, all picked up from the junk shop. The spring formed the inner core, the aluminium tube is the outer mold and the cardboard piece formed a conical end of the actuator for air inlet.
IMG_20180409_201116474_HDR
Actuator is casted and set aside for curing
IMG_20180410_181923271_HDR
And now the hardest part was demolding the inner spring.
ezgif.com-video-to-gif (5).gif
Again, with this one too, I did achieve linear actuation but the whole form was inflating much more than I liked. I was still happy with the overall form of this piece. I’d like to explore this aesthetically in the future.

ezgif.com-video-to-gif (7).gif

For PART 1 click here
For PART 3 click here
For PART 4 click here

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s