“For significant cost reduction and shortened cycle time”～ UDC Series ～For direct milling WC（Hard brittle material）
We have summarized it as a “How to use”
so that you can use UDC series well

How to use

Choose by application～ Please choose the appropriate tools for your purposes ～For highly efficientroughing andsemi-finishing

For better surface
finishing【H series】【F series】

UDCBH
UDCLBHUDCBF
UDCLBFUDCB
UDCLB

UDCLRSFUDCLRS（New edge treatment）

Ball

For cost saving
purposes

NEWRadius2

UDCRRSFor drillingprocessesFor threading

UDCMX

UDCTStudy case (Roughing – Semi-finishing – Finishing)
For efficient and high precision process,
It had better to choose the appropriate tools for each process.

～ Milling example for Bevel gear ～Roughing ~ Semi-finishing : UDCLB
Finishing : UDCLBF<Condition>Work material
Size
Coolant: Cemented carbide VU-70（83HRA）: F44 X 12.75 mm: Air blow

16 pcs, completed in 15 hours(First trial … 30 pcs, 35 hours. About 60％ reduction！)

NEWNew released UDCRRS improves
the roughing process efficiency
dramatically.
Please consider it.

UDCRRS(Multi-flute radius)(Milling example in P16, 17)3

Classification of Cemented carbide
Cemented carbide is classified bycomponent, WC average particle size, hardness.
Classification of cemented carbide(TAS, Tool Association Standard)
TAS 7000 Excerpt from the grade selection criteria for

cemented carbide and ultrafine particle cemented carbide forwear and impact resistant tools

Roughly classified into 3 types in the type of component,
and then middlely classified into 4 types in WC average particle sizeand further classified into 8 types according to the hardness.
No correlation with JIS B 4053.

E.g.）

Symbol4Component

VCoR

Co ／ NiNNi

Symbol

VM–40

WC average particle size (mm)SymbolNominal hardness(HRA)

1093 or more

20

92 to 9330

91 to 9240

89 to 9150

87 to 8960

85 to 87

Fsmaller than 1.0

70

82 to 85M

1.0 to 2.5

80

Smaller than 82

C

2.5 to 5.0U

5.0 or moreCharacteristics of cemented carbide
Characteristics (= Processability)
differ by the type of cemented carbide.
Example of grade classification symbol
SymbolComponent

WC average particle
size (mm)

VF-10

Co

Smaller than 1.093 or more

VF-20

Co

Smaller than 1.0

92 to 93

VF-30

Co

Smaller than 1.0

91 to 92

VM-40

Co

1.0 to 2.5

89 to 91

VU-70

Co

5.0 or more

82 to 85

Nominal hardness(HRA)

Soft <- Hardness -> Hard

Relationship between particle size and hardness
96
Binder-less
9594
HRA
94
VF-20
93
92～93HRA
Smaller than 1 mm
92
91
VM-40
90
89～91HRA89
1 ~ 2.5 mm
8887
86
85
8483
8281
HRA81
Ultra fine
Fine
Fine to medium
0.0
1.02.03.04.0

VU-70

82～85HRA
5 mm~Large

5.06.0Small <- Average particle size -> Large5Removal volume of cemented carbide
We recommend that you select a material with workability
while considering the required performance (Ex. Mold life)～ Removal volume comparison ～<Condition>
Tool
Work material
Coolant
Milling method: UDCB 2010-0070(R0.5): Cemented carbide(Below): Oil mist
: Pocket millingn : 30,000 min-1
Vf : 300 mm/min
ap : 0.1 mm
ae : 0.05 mm

Anti breaking Compressive
Co amount* Particle sizeforce
strengthmm
％
MPa
MPa
4,500~
12.00.5－5,000WC

SymbolDensityg/cm3

HardnessHRA①VF-20

14.1

92.5~
93.0

②

VM-40

14.7

90.0

3,240

4,700

8.8

2~3③

VM-40

14.3

89.0

3,400－

13.6－

④

VM-50

14.2

87.5

3,160

4,070

15.1－

⑤－

13.1

83.0

2,660

2,800

28.9－

* In-house measurement

Removal volume (① = 100％)
Removal volume (Tool life)
［％］

100%
80%
60%
40%
20%
0%

①6②③④

* The ratio depends on the series and tool shapes.

⑤

Difference by the MC
Depending on the difference of MC,process quality and tool life might be difference.
～ Removal volume comparison ～<Condition>
Tool
Work material
Coolant
Milling method: UDCB 2010-0070(R0.5): Cemented carbide VM-40: Air blow (Adjusted to be about the same on each machine): Pocket (8.2mm3)

MC A

MC B

MC C

Spindle Speed

min-1

30,000Feed Rate

mm/min

300

apmm

0.1

aemm

0.25

No. of Pockets

Pockets

2728

15

Removal volumemm3

221.4

229.6

123.0

Removal volume (Tool life) 「mm3］Removal volume comparison
300
250
200
150
100
500

MC A
マシンA

MC B
マシンB

MC CマシンC7

Difference by the MC (Supplement)
We recommend the high rigidity machineSince the cemented carbide has high cutting resistance.
～ Cutting resistance comparison (Slotting) ～<Condition>
Tool
Work material
Coolant
Milling method: UDCB 2010-0070(R0.5): Cemented carbide VM-40: SKD11: Air blow
: Slotting(Straight)

n : 30,000 min-1
Vf : 300 mm/min
ap : 2、5、10、20、50、100 mm

We measured the cutting resistance in the direction
perpendicular to the tool axis
◆ Cutting resistance of WC = SKD 11 x 3.5

ap◆ Increases in proportion to the virtual diameter
Virtual diameter

Cutting resistance comparison
80

Cutting resistance [N]70

WC (VM-40)

60
504030SKD1120
1000.00.1

0.20.30.4

Virtual diameter [mm]80.5

0.60.7

Condition and environment 【Coolant】
Coolant affect the tool life significantly.
～ Removal volume comparison (Roughing) ～<Condition>
Tool
Work material
Coolant
Milling method: UDCB 2010-0070(R0.5): Cemented carbide VM-40: Water soluble, oil mist, air blow
: Pocketn : 30,000 min-1
Vf : 300 mm/min
ap : 0.1 mm
ae : 0.05 mm<Tool damage after 30ｍｍ3 milling>

Water soluble

Oil mistAir blowRemoval volume (Tool life) [％]Removal volume comparison (Oil mist = 100％)
400%
300%
200%
100%
0%

Water
水溶性soluble

Oilオイルミスト
mist
クーラント

Air
エアブロー
blow

9

Condition and environment 【Cutting depth】
Cutting depth ap & ae must be adjusted depending on WCmaterials.For high hardness WC, small ap and large ae will
make the tool life longer. (In case of ball end mills)～ Influence of different cutting depth (ap and ae) ～<Condition>
ToolWork material
Coolant
Milling method

n : 30,000 min-1
Vf : 300 mm/min
ap : See below
ae : See below: UDCB 2010-0070(R0.5): Cemented carbide VM-40: Oil mist: Pocket

Cutting depth

Condition A
Condition B

apae

0.05
0.10

0.30
0.05

Condition A M.R.R : 1.88mm3/min(ｍｍ)Condition B M.R.R : 1.21mm3/min<Tool damage at the end of tool life>
Condition A

Condition B

Tool life : 100％

Tool life : 42％10(When condition A = 100%)

Condition and environment 【Feed Rate 2】
Tool life is improved when “Feed Rate 2” is used.
*Too slow “Feed Rate 2” will cause of short tool life. (Please refer to the catalog condition)

When “Feed Rate 2” is used？
◆Approach◆Connecting move

When tool contact the work

Movement when tool across the passed area

Inclined approach～ Different “Feed Rate 2” comparison ～<Condition>
Tool
Work material
Coolant
Milling method: UDCLB 2030-1400(R1.5): Cemented carbide VM-40: Air blow
: Pocketn : 27,500 min-1
Vf : 220 mm/min
ap : 0.125ｍｍ
ae : 0.33mm<Tool after 120ｍｍ3 milling>
Feed Rate 2 : 22mm/min

Feed Rate 2 : 110mm/min

Removal volume : 120mm3

Removal volume : 600mm3

Tool life is dramatically improved！(5 times)11

Condition and environment 【Approach】
Difference of approach (starting of cutting) will affect the tool life.
～ Influence of difference approach ～<Condition>
Tool
Material
Coolant
Methods: UDCB 2010-0070(R0.5): Cemented carbide VM-40: Oil mist
: Pocket (10mm3)

n : 30,000 min-1
Vf : 300 mm/min
ap : 0.1 ｍｍ
ae : 0.05 mm

Condition of approach
Contents
Condition A ・Inclined approach・Helical approach

Condition B ・F = 30 when milling in radial direction
Condition A M.R.R : 1.81mm3/minCondition B M.R.R : 1.21mm3/min<Tool damage after 10ｍｍ3 milling>

12Condition A

Condition B

Damage : Large

Damage : Small

UDC series applications
Drilling by UDCMX
Threading by UDCT
Chamfering and pilot holeby SP tools
Ceramics parts

・Automobile parts
・Fuel cell separator
・WC insert chips
・Sintered ceramics

Lens

UDC is used for wide applications.
*Those photo includes the sample images.

13Advantaged of “direct milling” (Comparison with EDM)
<Model>Tapered circular pocket
Size : F13 x depth 18mm x draft angle 10°, fillet R2, bottom R3.5<Condition>
Tool: UDCLB 2060-1500(R3)【超硬加工・豆知識】 刃先処理のメリット
Work material : Cemented carbide VM-40
Coolant

n : 20,000 min-1
Vf : 200 mm/min
ap : 0.2ｍｍ
ae : 0.4mm

Cost and lead time comparison
6Cost
加工コスト
Lead time
加工時間

60,00040,00043
220,000051EDM
放電加工

Directmilling
直彫り加工

0Lead time [hour]

Machining cost [¥]80,000: Air blow

In this study case,
Direct milling offers◆Machining cost : 60% reduction◆Lead time : 80% shortened

Compare to EDM processing

Case of WC direct milling is increasing due to realization ofMilling surface improvement and shortened lead time etc.

High cost-performance (Compare to PCD Tools)

Unit cost of tool

*Catalog pricecomparison(Image)

PCD Tools

14UDC series

UDC series are more affordable than PCD tools.
Please try when the cost reduction is necessary.

Advantage of edge treatment
With or without the edge treatment (R0.5)
350

80

300
25060

刃先処理のメリット

200

40

150
100

200Fx
400

50

Conventional
従来品

Edgetreatment
刃先処理品

0Removal volume (Tool life)[mm3]Cutting resistance [N]

100FyFz
Removal
除去体積volumeThe edge treatment (For F series and H series)
reduces the cutting resistance by the sharp edges.
It offers longer tool life and improvement the process qualities.

Accumulated reliable know-how◆Chips (With different WC)*by high-speed camera
Chips of VM-40

Chips of binder-less WC◆SP tools of UDC◆Roughness (Direct milling vs EDM)
Ra＝0.03μm

Ra＝1.78μm

Examples of SP tools form+
We are knowledgeable about UDC process. You can combine
UDC + SP tools forms. Please do not hesitate to contact us.
(To inquiries on the back cover)

15

The latest product【UDCRRS Long neck radius for roughing】
Achieves higher efficiency！

NEWThe Multi-flutes and40 degree helix angle
achieves low cutting
resistance and offers
deep cutting depth milling！

F2~4 : 6 Flutes

F6 : 10 Flutes

M.R.R and Removal volume of UDCRRS
500

30,000

Removal volume
除去体積

450

M.R.R
加工能率

400
350
300

20,000250

200
10,000150(Ref.)

100
500

Φ2
Conventional
従来品

Φ3Φ4Φ6*Conventional = R1 ball end mill (Pocket)

UDCRRS improves the efficiency andremoval volume for roughing process！
160

M.R.R [mm3/min]Removal volume (Tool life) [mm3]40,000WC punching die milling example
Tool: UDCRRS 6040-020-100
Work material : Cemented carbide VM-40
Coolant: Air blowCycle time
: 93 min<Condition>n : 15,000 min-1
Vf : 375 mm/min
ap : 3.0 mm
ae : 0.25 mm<Appearance>
9mm（ap3mm x 3 times）

Size : 50 ｘ 50 mm<Tool damage>

Tool damage is limited and continuous cutting is possible
Even after the process 15,953 mm 3

Removal volume (Tool life) [mm3]

UDCRRS (LOC 3.2 mm)
Electrodeposition tool (LOE 5mm)
30,00025,00020,000ｎ-1

Vfapaemin

mm/minmmmm

Coolant

15,625375

30.25

Air blow

8,000

20050.1

Water soluble

300

Removal volume
除去体積
加工能率
M.R.R

250
200

15,000150

10,000100

5,000500Electrodeposition
tool
電着工具

UDCRRS

Compare to the electrodeposition tool,
Removal volume : 23 times, M.R.R : 2.8 times
UDCRRS offers high efficiency and long tool life .

M.R.R [mm3/min]

Tool (F4)017

Introduction of UDC-H series
H series offers more efficient process than conventional.
It is the best suited for roughing to semi-finishing.
～ Features of H series ～High-level Treatment

High Speed

High Material Removal VolumeBall (UDCBH) 6 models, Long neck ball (UDCLBH) 22models
We are expanding the line-up for the future.

R0.5

2,50060

R1502,00040

H

1,50030

1,00020

F5000B
UDCBFH
UDCBF

10BF

H0

UDCBH (Application for each model is in P2)*UDC-H series shows the maximum tool performance
under high-speed conditions.
Please try with appropriate coolant supply and high rigid MC.
18M.R.R [mm3/min]Removal volume (Tool life) [mm3]3,000Comparison with the conventional(Removal volume, M.R.R)

Information of our web site
You can see various milling examples / videos on our web site.

Scan for milling example →Scan for milling videos →19