2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN
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TURNING INSERTS
TURNING INSERTS WIPER INSERT a Improving Surface Finish
yWhat is a Wiper Insert? Under the same machining conditions as conventional breakers, but with the feed rate
increased, the surface finish of the workpiece can be improved.
• The wiper insert is designed with a wiper edge that is
a Improving Efficiency
situated where the straight edge meets the corner
High feed rates not only shorten machining times but also make it possible to combine
radius. Wiper roughing and finishing operations.
• In comparison to conventional
a Increased Tool Life
breakers, the surface finish does
When using to high feed conditions, the time required to cut one component is decreased, thus
not deteriorate even if the feed rate more parts can be machined with each insert. In addition, the high feed rate prevents rubbing,
therefore, delaying the progression of wear and increasing the tool life of the insert.
is doubled.
a Improving Chip Control
• Machining at high feed rates
Under high feed conditions, the chips generated become thicker and are more easily
broken, thus, chip control is improved.
improves cutting efficiency.
Finished surface yA wiper insert + machining at high feed rate
Same surface • Reduced machining time (per workpieces)
Wiper insert roughness Standard insert • Increased number of workpieces (per definitive time period)
++ • Improving chip control
High feed (The feed rate is doubled.) The conventional feed condition
yA wiper insert + machining at conventional feed rate
*Please use a wiper insert at high feed rate. • Eliminating the finishing step by roughing and finishing together
40 (Separate roughing and finishing steps | Single-step machining)
Surface Roughness Standard Insert Workpiece : DIN Ck45 • Reducing cycle times
Rz (m) Insert : CNMG120408-oo • Increased productivity
30 Cutting Speed=200m/min • Avoiding Line-Stoppage
20 Wiper Insert Depth of Cut=1.5mm The realisation of Reduced Costs!!
MW Breaker Feed Speed=0.2 – 0.6mm/rev
Wet Outer Diameter Cutting
10
0 0 0.2 0.4 0.6 0.8
Feed f (mm/rev)
The surface roughness does not deteriorate
even if the feed rate is doubled (0.30.6)!
The estimate of finished surface roughness when using a wiper insert
The effects of wiper inserts on external In case the Rz(W)=Rz0.5
machining, boring and facing. angle is over
than 5° Rz(W) = Finished surface roughness
*The surface roughness when machining at when using a wiper insert.
corner R or taper angle over 5°, is the same
as machining with standard inserts. Rz : Finished surface roughness from
conventional conditions.
(When using a standard insert)
Effective usage of a wiper insert
Non effective usage of a wiper insert
Special attention is not necessary when using CNMG • WNMG • CCMT types
yNo Restriction for Holders End Cutting y Not Necessary to Adjust
Angle the Machining Programme
A standard holder can be used. Conventional machining
75°
*( A double clamp, high rigidity tool is programmes can be used.
recommended.) The CNMG type can
be used as a wiper at (The CNMG • WNMG • CCMT
End Cutting the 100°corner.
Angle types are based Not
necessary to
Non 95° on the
restriction ISO/ANSI.) adjust
Special attention is necessary when using the DNMX • TNMX types due to the special top face geometry
yRestriction for Holders y Necessary to Adjust
the Machining Programme
Use a holder with an end cutting angle of 93° for improving wiper efficiency. A holder with
an end cutting angle of 91° can improve wiper efficiency (see the following figure), however, When machining errors occur, please
there is no wiper efficiency with other Theoretical Surface Ex):Theoretical surface roughness of holders adjust the programme. Standard corner
end cutting angles (60°, 90°, 107°etc.). Roughness Rz (m) when using the TNMX160412-MW. radius
(The DNMX•TNMX types are not
The hole geometry of the DNMX and TNMX type are 40 MW (93°) based on the ISO/ANSI. Please
the same as the DNMG and TNMG types. The "X" 30 MW (91°) refer to the next page.)
represents the special geometry of the Corner point.
Standard Wiper corner
20 corner radius radius
End Cutting Angle 10 Adjustment
necessary
93° 0
(Specified) 0.1 0.2 0.3 0.4 0.5 0.6
Feed f (mm/rev)
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