Walter USA's MU5 Insert Benefits Low-Volume, High-Mix Turning Applications
The MU5 double-sided indexable insert from Walter USA can be used for turning steel forged parts as well as stainless materials.
The MU5 double-sided indexable insert from Walter USA can be used for turning steel forged parts as well as stainless materials. With forged parts, particularly in automotive production, the MU5 geometry is said to minimize crater wear for more reliable automated production. Universal usability in steel and stainless materials is said to be advantageous for work involving changing material demands and smaller batch sizes. According to the company, the insert owes its versatility to its positive macrogeometry and negative clearance.
Other features include an open chipbreaker groove for long tool life and soft cutting features; a V-shaped chipbreaker for improved chip breakage; and a curved cutting edge that is said to improve surface finish quality.
For copy turning, the MU5 geometry is said to improve chip breakage not only for turning and facing, but also for chamfers or radii that would otherwise be critical.
Recommended machining parameters for most applications are 0.0006" to 0.024" feed per tooth and 0.020" to 0.160" depth of cut.
Running rotary milling cutters at the proper speeds and feeds is critical to obtaining long tool life and superior results, and a good place to start is with the manufacturer's recommendations. These formulas and tips provide useful guidelines.
To make the transition to hard turning, you'll need to switch from carbide to CBN inserts, but that is easier (and more economical) than you might think. It's making the jump to much higher surface speeds that might scare you off. It needn't. Here's why.
With macros and canned cycles resident in the CNC on most contemporary turning centers, single point turning of OD threads can seem like almost a default process decision. However, for numerous applications, OD thread rolling has inherent advantages as an alternative to cutting threads.