There are at least two artists with this name

1) A Powerviolence band from Melbourne, Australia

http://sickmachine.bandcamp.com

2) sick machine is a disgusting venture into the hearts of man. Started in 1999, it began as musician dot matrix decided to make industrial music and record it on his computer. After many years the music has improved and has gained a small but loyal following.

See also:
http://www.myspace.com/sickmachine
http://www.soundclick.com/bands/pageartist.cfm?bandID=176295
Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.