#5 Today’s Motor Vehicles’ Best of 2021: Ask the expert Questions with Rick Crabtree

Sandvik Coromant’s automotive applications specialist discusses how applying rotary broaching principles has created burr-free milling cutters.

https://www.sandvik.coromant.com/en-us/pages/default.aspx
https://www.sandvik.coromant.com/en-us/pages/default.aspx
Sandvik Coromant

1) WHAT CHALLENGES WERE SANDVIK COROMANT ENGINEERS TRYING TO SOLVE WITH M5 MILLING CUTTERS?

Aluminum is easy to machine but can leave burrs and sharp edges. Manufacturers were using milling cutters with lots of teeth, so tool setup was taking half an hour. Then, cutting in the same area for a length of time causes a burr to form pretty quickly.

We adapted technology from rotary broaching, which is typically used for finishing. We eliminated most of that setup time by using fixed-pocket inserts, so you don’t need to be in the tool room for long.

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