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USP280 End Mills Series
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Profiling and 3D Milling
Release date:2010/4/3 Browsing times:905Time Keyword:本站
There are four basic types of tool shapes that find extensive use in profile and three-dimensional milling: square end with sharp corners, square end with small or larger corner radii (also known as bull nose), toroid (square or back-drafted tools with each corner radius approximately 25% of the tool diameter) and ball nose cutters. Millstar has developed a number of milling strategies which successfully apply all of these tool types depending on the shape of the part and the type of cut and tool engagement.
Some of the processes Millstar developed are opposite to conventional practice. For example, Millstar will machine an open ended or closed, deeper slot by employing a ball nose tool and using typical High Speed shallow ramp and Z-level milling techniques; the slot will be produced far faster than milling with a cylindrical end mill. The sidewalls will be straight and perpendicular, and not tapered as they often are with long end mills due to tool deflection. Ribs can be processed in similar fashion. A typical application was milling 3/4" wide slots in mold bases, 5" long and 2" deep. There was a cross hole in the middle of the part creating an interrupted cut. 6 slots were originally finish milled in 30 minutes, not including roughing time. With the new High Speed technique, 6 slots were roughed and finished in one combined operation in only 10 minutes. Link to Tech. Article "High Speed in the Slots". Millstar has developed many other innovative processes. We will be glad to share them with you.
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