Основной каталог Kyocera 2021 - 2022 - страница 329

Introduction 


Dynamic Bar
The Dynamic Bar achieves superior chip evacuation
Superior chip evacuation (External coolant)
Dynamic Bar Competitor A Competitor B


Inside the workpiece
In the products of competitor A and B chips remain inside the
workpiece, but chips from the Dynamic Bar are all evacuated from
F
the workpiece.

Chip evacuation direction


Boring
Comparison of pocket length Chip evacuation direction
Pocket length
SCLC(P) type STLB(P) type


Pocket length (mm)
Description
Dynamic Bar Competitor A
A16-SCLPR09-18 type 37 29
A20-SCLCR09-22 type 48 32
Better evacuation by backward chip flow


High rigidity and chattering resistance are ensured by using a special alloy and with
help of stress analysis technology.

Comparison of vibration tendency Comparison of surface finish
（L/D） Vibration of the Dynamic Bar was minimal even at high
cutting speeds, enabling stable machining.
Dynamic Bar Competitor A Competitor B Cutting conditions
5.5 5.0 SCM415
5 4.5 Vc=210m/min
Surface wall


ap=0.5mm
f=0.1mm/rev
4 A16Q-SCLPR09-18 type
CPMT090304XP(PV7020)
3 L/D=4
External coolant
Surface roughness


2
1
Ra = 0.4 µm Ra = 0.6 µm Ra = 3.4 µm Direction of vibration
Rz = 2.3 µm Rz = 3.6 µm Rz = 14.0 µm measurement
Dynamic bar
AE type
Competitor A Competitor B
Oscillatory
waveform


Maximum toolholder overhang length (L/D)
Cutting conditions
SCM415 f = 0.1 mm/rev
Vc = 150 m/min S16-SCLPR09 type
ap = 0.5 mm CPMH090304L-Y


F3