Help for modeling this particular
2 Answer

It is a wave disc for a plow or cultivator. More images can be found in the links:
http://www.agriexpo.online/agricultural-manufacturer/wave-disc-blade-5221.html
https://www.alibaba.com/product-detail/Notched-Round-Plow-Harrow-Disc-Blades_60531489206.html
Check out some of the tutorials on making a wave washer: https://www.youtube.com/results?search_query=solidworks+wave+washer
The GrabCAD library has several wave washers you can review as well:
https://grabcad.com/library?page=1&time=all_time&sort=recent&query=wave%20washer