M642 and M632 – New crankshaft disc milling concept with radial mounted inserts

M642 (internal milling) and M632 (external milling) are a new crankshaft disc milling concept with radial mounted inserts.
The design developed for CoroMill^® 745 (face milling) resulted in a new method for positioning inserts on cutters. This gave M642 and M632 greater chip room and a greater number of effective teeth compared to conventional tangential 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 crankshaft, causing less generation of heat
• A considerably higher number of effective teeth compared to tangential concept cutters with the same chip-room size
• 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 with the new design
• It is possible to press a positive geometry (reducing cutting forces) onto this insert with conventional pressing
• Low cost per part
• Predictable performance