M642 and M632 – new crankshaft-disc milling concept with radially mounted inserts

M642 (internal milling) and M632 (external milling) are a new crankshaft disc milling concept with radially mounted inserts.

The design developed for CoroMill® 745 (face milling) resulted in a new method of positioning inserts on cutters. This gave M642 and M632 greater chip room and a greater number of effective teeth compared to conventional tangentially mounted milling tools.

This new, patent-pending design results in reduced cycle times and better chip evacuation.

Features and benefits

• Better chip evacuation due to larger chip room. This results in reduced contact with chips for both the tool and the crankshaft, causing less heat generation
• A considerably higher number of effective teeth for the same-size chip room compared to tangential concept cutters
• Reduced cycle time compared to tangential concept cutters
• Good access to the screw through the chip room
• The back face of the insert is protected by the tip seat in the new design
• A positive geometry (reducing cutting forces) can be pressed onto this insert using conventional pressing
• Low cost per part
• Predictable performance