MITSUBISHI MATERIALS CORPORATION
BACK


FEATURES OF DIMPLE BAR

DIMPLE BAR

Highly rigid steel shank and a lightweight head configuration
designed by computer simulation analysis reduces chatter due to deflection and improves the vibration damping properties.
A The lightweight head with its large dimple reduces chatter. D The boring bar has a laser printed scale on the shank to facilitate easy installation.
B Chip disposal is improved by having two channels for chip evacuation. E "F and FS" breakers improves the quality of the surface finish, "MV" breaker offers excellent chip disposal.
High wear resistant CBN inserts are also available for the machining of hardened materials.
C Available in sizes smaller than the ISO standard. Therefore the boring of small diameter holes is possible.  

DEFLECTION RESISTANCE
DEFLECTION RESISTANCE  
The unique cross sectional shape engineered into the dimple effectively balances the cutting forces (principal and back force), and reduces deflection by up to 17 %.
Boring Bar Deflection
DIMPLE BAR 28.3µm
Conventional Bar 34µm
VIBRATION RESISTANCE
  • DIMPLE BAR
Weight of the Head Damping Time
49.7g 15.8ms
DIMPLE BAR
By reducing the weight of the head, the damping properties are increased.
  • Conventional Product
Weight of the Head Damping Time
70.1g 20ms
Conventional Product
* The simulation data stated above was conducted with a FSCLP1816R-09A holder, under the following conditions;
l/d=5, depth of cut=0.5mm, and feed=0.05mm/rev.