Brawny Milling Cutters Get Small
The original role for tangential milling was to improve tool life on big jobs such as hogging wide-area flats on large automotive castings and steel parts. Until recently, small-diameter tangential-milling cutters were not available that could out-perform conventional cutters because limitations in the technology of insert manufacturing did not allow for the special geometries and clearance angles necessary. Now, with freer cutting insert geometries and smaller cutter diameters, tangential milling is emerging as a solution for faster metal removal with lower cutting forces, even on low-power machines.
How Long Will Toolholders Last?
Although predicting the service life of toolholders is extremely difficult, understanding and avoiding the factors that shorten their life can maximize their life spans. Because the positioning of tools is a function of the fit between the toolholder and the spindle, positioning tools accurately on machining centers is a process that has a tendency to break down. Dirt, chips and wear will begin to affect this connection over time. Also, different types of toolholders react differently to cutting forces so frequent inspection is important.
Sandvik Coromant Displayed Technology Advances At EMO and Beyond
New techniques and technologies to cut difficult aerospace materials include a hockey-stick-shaped insert designed to meet the demand of cutting the hard alloys. Also, process engineers are looking at processes such as multiple-slice machining methods as techniques to cut difficult aerospace materials.
Many shops have problems holding delicate or thin-walled parts that distort when clamped by conventional workholding devices, or parts that are deformed in their free state but must be machined true. Innovative clamping and magnetic workholding techniques that do not squeeze and deform a part while conforming to the part's free-state can be the answer.
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When: November 8-9, 2007, Where: Cleveland Marriott Downtown at Key Center
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