Article From: 7/7/2006 Production Machining
The Jet-Cut system, an upgrade to the Do-Grip parting insert, offers a coolant hole that passes through the insert to an outlet near the cutting edge. The DGNC style inserts are suited for parting and grooving operations on stainless steel and high temperature alloys. When machining these materials, the temperature near the cutting edge can become very high, causing premature wear. By applying coolant to the cutting zone, this can be reduced, the company says.
These inserts are also a solution to grooving and parting applications where there is a problem getting coolant to the cutting edge, such as when the chip exits the workpiece and prevents the coolant from reaching the cutting edge. The DGNC inserts allow the coolant to travel through the insert and exit though an opening directly next to the cutting edge. Coolant goes where it is needed most and it cools the insert internally at the same time. This system increases tool life and provides a smoother surface finish, according to the company. Materials such as titanium, Inconel and austenitic stainless steel tend to strain harden during the cutting process and thereby produce long and tangled chips. By efficiently applying cooling through the system, rates of flank and crater are reduced to increase tool life when cutting these materials.
Coolant can be supplied either directly to the DGFH-C blades used on regular blocks or through the SGTBU-C blocks which have coolant passages or connecting ports. Inserts are available in widths of 0.118" and 0.157" in the C- and J-type chip formers.
