Общий каталог Yamawa 2021 - страница 623

Intro MHCDS

SP

Center Drills for Medium Hardness Carbon Steel for High

Speed machining, HSSCo Coated

SL

HSS-Co COATING

PO

P2 P3 P4

Carbon and Medium

Work-materials low alloy alloy steel

ST steel

Vc (m/min) 30÷45 30÷45

DC fn (mm/rev) fn (mm/rev)

FEATURES Single-ended center drills for high accuracy in center hole drilling. Easy positioning and high precision machining. HSSCo and special coating for long and stable life even on medium hard materials.

WATCH THE VIDEO

YMW-MHCDS

LONG

Cutting Data HAND Great extension of tool life with MHCDS

TAPS

The pictures on the right show the diff erent Cutting Condition damage of MHCDS and a market alternative cutting edge after 480 holes machined at the Size: 3x60°x8 same cutting condition. As shown, the MHCDS Material: Ck60 - 1.1221 EG (STI) Machine: NC lathe has smaller wear and edge damage allowing the MHCDS to run much further than a standard Cutting speed: 30m/min center drill. Feed: 0.15mm/rev Lubricant : water soluble oil

SPECIAL

THREADS, Market alternative MHCDS

GAUGES

Great improvement in surface roughness and circularity with MHCDS

THREAD Under the cutting condition stated above, the surface fi nish of center-drilled hole has Circularity of center dril-

Enlarged picture

MILLS been greatly improved. Circularity of center drilled hole as well as run-out tolerance of led 60° face

turning axis has been improved. 90

μm Surface roughness of center drilled 60° face 135 45

DIES

180 0

225 315

CENTER 0 0.5 1.0 1.5 2.0 270

DRILLS

YMW