The milling cutter features a 25[degrees] entering angle
for productivity gains when milling steel and cast iron workpieces.
The value of the entering angle
Kr should be lower than 45[degrees], because of the increase of the cutting forces.
The 210's ten-degree entering angle
allows extreme feedrates at small axial depths of cut when the tool is fed tangentially.
So what this means is that the tool can enter the part-and one of the characteristics of the approach is a comparatively small entering angle
, which enhances tool life as it creates a thin, wide chip-near the chuck and machine back toward the end of the part and, with the same tool, machine from the end of the part in toward the chuck.
The tests have been applied on an universal milling machine of the FU 32 type in the following conditions: face up milling, with normal orientation of the cutter equipped with cemented carbide inserts, grade P30, uncoated, without chip breackers, having a diameter D=165 mm, z=6 teeth, main relief angle [[alpha].sub.N]=12[degrees], side rake angle [[gamma].sub.N]=9[degrees]30', angle of inclination of the main cutting edge [lambda]=11[degrees] and entering angle
A 10-degree entering angle
allows extreme feed rates at small axial depths of cut when the tool is fed tangentially.
Features a 10[degrees] entering angle
for high feeds at small axial depths for tangential feeding.
Xcel features the accessibility mad easy programming of an 80-degree insert along with reduced wear compared to a square insert used at a 45 degree entering angle
. Two insert sizes are now available to suit depths of cut from 0.5 to 3 mm in intermediate stage machining with the possibility to machine in two directions.
They are also interchangeable with conventional radius inserts designed for use in toolholders with a -5 degree lead angle (95 degree entering angle
Machining was done with FBP 415 cutter and SPEN42EEER1 insert with 15 deg entering angle
at higher spindle and cutting speed, 670 rpm and 701 sfm vs 560 rpm and 586 sfm.
The conclusion is that it is better to use resistances having entering angles
different of 70[degrees] at the entrance of the oil into the piston chamber.