Product category:
Milling cutters
News Release from: NCMT | Subject: BIG Daishowa Seiki indexable insert end mills
Edited by the Manufacturingtalk Editorial
Team on 15 August 2002
Insert end mills are tough, but sharp
too
Indexable insert end mills from 16 to 50mm diameter combine the strength and geometry of solid carbide with the economy and benefits of indexable inserts.
BIG Daishowa Seiki, hitherto known almost exclusively for toolholding products, has introduced a new series of indexable insert end mills from 16 to 50mm diameter that combine the strength and geometry of solid carbide with the economy and benefits of indexable inserts The sharpness of the edge is made possible by double positive rake angles in a rigid design
This article was originally published on Manufacturingtalk on 22 May 2001 at 8.00am (UK)
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Eccentric relief of the cutting edge is adopted for the first time in the indexable style.
Toughness of the cutting edge is thus improved without reducing sharpness.
High positive rake angles, both in the radial and axial directions, achieve low noise and low-resistance cutting.
The Fullcut Mill is offered not only with cylindrical shanks but also with integral taper.
The Big-Plus simultaneous taper and face contact enhances rigidity.
Spiral chip pockets are incorporated to achieve high rigidity and through holes for semi-dry cutting (or coolant) improve insert life.
Secure clamping of inserts with the patented high tensile steel 'Alpha Screw' system and maximum support under the insert are further features.
New also is BIG Daishowa's Mega E Chuck, designed for small end mills and through-spindle coolant delivery at high pressures up to 70 bar.
Coolant is fed through the slits in the collet directly to the periphery of the cutting tool for extended edge life and smooth evacuation of chips.
The chuck joins the 'D' models with mechanical compression chucks for diameters of 16mm upwards and the general purpose 'N' models that have 0.5 mm collet collapse and can accommodate shanks of any size.
In contrast, the new 'E' chucks have no collapse, a slower taper for improved gripping force and a thicker body section for higher rigidity.
Together with the remarkable one micron concentricity at the spindle nose, these features allow very high precision end milling at speeds up to 40,000 rpm.
Cutting tools with shank diameters from 3 to 13mm may be clamped in four basic sizes of chuck.
Each is available in six different gauge lengths, giving 24 options of both BT30 and BT40 (and equivalent) chucks.
Integral solutions may therefore be provided for most applications without the need for extensions. Request a free brochure from NCMT ...
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