I can come up with >100 without even trying
http://highschoolnicknames.homestead.com/common.html
I bet there are at least:
12 eagles
10 tigers
8 panthers
8 bulldogs
etc...
In addition, you can add robo or robot to the front of these names and bots or robotics to the end of these names to get even more team names!
For example:
robot tigers
Pantherbots
robotic bulldogs
Doesn't really help with team numbers though...