Technical Data

551

[ CES series ]

WORKPIECE CARBON STEELS, ALLOY STEELS STAINLESS STEELS.

TITANIUM ALLOY ALUMINIUM

HARDNESS ~HRc20 HRc20~ HRc30 HRc30~ HRc40

STRENGTH 500~800N/mm2 800~1000N/mm2 1000~1300N/mm2

DIAMETER(mm) RPM FEED RPM FEED RPM FEED RPM FEED RPM FEED

3 5,900 60 4,000 30 3,300 25 2,400 20 14,000 220

4 4,800 60 3,300 30 2,800 25 2,000 20 11,800 230

5 3,800 60 2,500 30 2,200 25 1,760 20 9,500 240

6 3,000 60 2,000 30 1,800 30 1,400 20 7,700 250

8 2,300 65 1,540 35 1,300 35 1,100 20 5,800 260

10 2,000 65 1,300 35 1,200 35 1,000 20 5,000 260

12 1,760 65 1,000 40 1,000 35 540 20 4,400 260

16 1,400 65 900 40 770 35 660 25 3,300 270

20 1,100 65 700 40 600 35 440 25 2,600 270

[ CEM series ]

WORKPIECE CARBON STEELS, ALLOY STEELS STAINLESS STEELS.

TITANIUM ALLOY ALUMINIUM

HARDNESS ~HRc20 HRc20~ HRc30 HRc30~ HRc40

STRENGTH 500~800N/mm2 800~1000N/mm2 1000~1300N/mm2

DIAMETER(mm) RPM FEED RPM FEED RPM FEED RPM FEED RPM FEED

3 5,900 95 3,900 65 3,300 50 2,400 40 14,000 230

4 4,800 95 3,200 65 2,800 50 2,000 40 12,000 240

5 3,800 100 2,500 65 2,200 55 1,760 45 9,500 250

6 3,000 110 2,000 70 1,800 60 1,400 50 7,700 300

8 2,300 115 1,540 75 1,300 65 1,100 55 5,800 350

10 2,000 120 1,300 80 1,200 65 1,000 55 5,100 380

12 1,760 130 1,100 90 1,000 70 840 60 4,400 400

16 1,400 140 900 90 770 70 660 60 3,000 330

20 1,100 140 700 90 600 70 440 60 2,640 340

[ CRC series ]

WORKPIECE CARBON STEELS

S54C ~ S55C

ALLOY STEELS, TOOL STEELS

SKD / SUS / SCM

HARDENED STEELS

NAK / HPM

HARDNESS HRc35~ HRc45

DIAMETER(mm) RPM FEED RPM FEED RPM FEED

1.9 3,200 60 2,300 50 2,500 40

2.9 2,500 60 1,800 50 1,800 40

3.9 1,850 60 1,400 50 1,400 40

4.9 1,600 60 1,100 50 1,200 40

5.9 1,400 60 900 50 1,000 40

FEED : mm/min

FEED : mm/min

FEED : mm/min

552

[ Recommendation of Cutting Conditions in Reamer ]

WORKPIECE DIAMETER(mm) CUTTING CONDITIONS

MATERIAL TENSILE STRENGTH(Kg/mm2) HARDNESS(HB) V (m/min) fn (mm/rev)

CARBON STEELS

ALLOY STEELS

~ 100

~10

10~25

25~40

8 ~ 12

0.15 ~ 0.25

0.20 ~ 0.40

0.30 ~ 0.50

100 ~ 140

~10

10~25

25~40

6 ~ 10

0.12 ~ 0.20

0.15 ~ 0.30

0.20 ~ 0.40

STEEL CASTINGS

40 ~ 50

~10

10~25

25~40

8 ~ 12

0.15 ~ 0.25

0.20 ~ 0.40

0.30 ~ 0.50

50 ~ 70

~10

10~25

25~40

6 ~ 10

0.12 ~ 0.20

0.15 ~ 0.30

0.20 ~ 0.40

CAST IRON

~ 200

~10

10~25

25~40

8 ~ 15

0.20 ~ 0.30

0.30 ~ 0.50

0.40 ~ 0.70

200 ~

~10

10~25

25~40

6 ~ 12

0.15 ~ 0.25

0.20 ~ 0.40

0.30 ~ 0.50

ALUMINUM ALLOYS

~10 15 ~ 25 0.20 ~ 0.30

0.30 ~ 0.50

0.40 ~ 0.70

10~25

25~40 20 ~30

[ CFT, CCT, CCF series ]

► Metric

WORKPIECE CARBON STEELS ALLOY STEELS PREHARDENED STEELS

DIAMETER(mm) RPM FEED RPM FEED RPM FEED

2 3,400-7,000 70-100 2,600-5,200 50-90 2,000-4,000 40-60

3 2,700 - 5,300 60-85 2,100-4,200 45-70 1,600-3,200 35-50

4 2,000 - 4,000 50-70 1,600-3,200 40-55 1,200-2,400 30-40

5 1,700 - 3,400 45-60 1,400-2,600 35-50 1,000-2,000 26-35

6 1,300 - 2,700 40-50 1,100-2,100 30-40 800-1,600 22-30

7 1,150-2,400 35-45 950-1,900 28-37 700-1,400 21-28

8 1,000-2,000 30-40 800-1,600 26-34 600-1,200 20-25

9 900-1,800 30-40 700-1,450 24-32 550-1,100 18-23

10 800-1,600 30-37 600-1,300 23-29 500-1,000 17-22

11 750-1,450 30-37 550-1,200 22-28 450-900 16-21

12 700-1,300 28-35 500-1,100 21-27 400-800 16-20

FEED : m/min

Recommended Cutting Condition

Technical Data

553

[ The Effect of Chamfer ]

TWIST DIRECTION CHARACTERISTICS

If the work piece is caught by sharp blade edge, dent occurs on the machined

surface. It is applied to chucking reamer, etc.

Guide edge was rounded. The ground surface is excellent but round machining

is difficult and it may deteriorate the machined surface.

It is 2 blade-type. Chip is produced in 2 stages and it provides good results.

But regrinding is difficult.

The guide part of second stage of cutting edge is 1~2˚. Cutting edge blade is

long and life is limited. It provides good results on finish machining

The guide part of second stage is 10~20. It is very economical as the length of

blade is short and utilized length is long

It is used for finish machining. It is applied to hand reamer.

45。

R

45。 45。

45。

1。~ 2。

45。

10。~ 20。

1。~ 2。

[ The Effect of Twist Angle ]

TWIST DIRECTION CHARACTERISTICS

Straight blade (twist angle is 0˚) ㆍSurface is generally poor except cast iron.

Right twist blade

ㆍExcellent machinability and easy to discharge chip

ㆍApplicable work piece range is wide.

ㆍExcellent for high hardness work piece

Left twist blade

ㆍExcellent surface roughness for work piece of aluminium alloys, copper, and copper

alloys

ㆍIt is good for machining soft materials

Recommended Cutting Condition

554

[ Trouble Shooting of Reaming ]

TROUBLE PLAN MEASURES

Enlarged Hole

Increase burnishing effects

• Decrease chamfer angle • Increase margin width

• Decrease back taper • Grind 2 stages chamfer

• Use S.CI type cutting oil • Check reamer diameter

Suppress the occurrence of

built-up-edge

• Increase margin width • Grind 2 stages chamfer

• Change heat treatment conditions and microstructure of workpiece

• Increase cutting oil supply

• Increase cutting speed and reduce feed rate

Reduce the unbalance of

cutting force

• The cutting edge difference shall be less than 0.005mm

• Increase cutting speed

• Reduce the deviation of main axis and basic Diameter

• Check wear conditions of bush and replace it

• Change water soluble cutting oil to non-water soluble oil

Shrinked Hole Reduce finish effects

• Increase the clearance angle of cutting edge

• Decrease margin width • Increase back taper

• Increase cutting speed

Poor roundness Reduce Chattering

• Increase the strength of machine • Reduce the tolerance of bush

• Change to left helix reamer • Increase margin width

• Increase back taper • Decrease cutting speed

• Increase feed rate

Poor surface

roughness

Increase burnishing • Use left helix • Decrease chamfer angle

• Grind with 2 stage chamfer

Remove deposit • Increase rake angle • Increase cutting speed

• Reduce feed rate

Remove chattering

• The cutting edge difference shall be less than 0.005mm

• Increase cutting speed

• Align main axis center and basic diameter center

• Change water soluble cutting oil to non-water soluble oil

Remove chip interference • Change shape of flute type

• Increase the depth of flute

Recommended Cutting Condition

Technical Data

555

HQ(Changwon Factory) TEL. 82-55-286-0905 FAX. 82-55-286-0978

TEL. 1-847-947-8320 FAX. 1-847-947-8322

TEL. 84-20-4248-4883

TEL. 84-24-6287-3828

TEL. 84-28-6297-3858

WIDIN USA

WIDIN VIET NAM(OFFICE & FACTORY)

└ VIET NAM HA NOI OFFICE

└ VIET NAM HO CHI MINH OFFICE

WIDIN

GLOBAL NETWORK

HQ & Changwon Factory

172, Sahwa-ro, Uichang-gu, Changwon-si, Gyeongsangnam-do, Korea [51389]

WIDIN USA

1261 WILEY RD. UNIT F Schaumburg, IL 60173

WIDIN VIET NAM(OFFICE & FACTORY)

Lot CN5, Hop Thinh Industrial Zone, Hop Thinh Commune, Hiep Hoa District,

Bac Giang Province, Viet Nam

└ HA NOI OFFICE

8th Floor – Hoang Ngoc Building, Lot C2C, Cau Giay Focus Areas of Information

Technology, Dich Vong Hau Ward, Cau Giay District, Ha Noi City, Viet Nam

└ HO CHI MINH OFFICE

4th Floor - Hai Au Building, 39B Truong Son, Ward 4, Tan Binh District, Ho Chi Minh City, Viet Nam

E-mail. widin@iwidin.com www.iwidin.com

HQ & Changwon Factory

172, Sahwa-ro, Uichang-gu, Changwon-si, Gyeongsangnam-do, Korea [51389]

HQ : TEL +82-55-286-0905 FAX : +82-55-286-0978

WIDIN USA

1261 WILEY RD. UNIT F Schaumburg, IL 60173

TEL : +1-847-947-8320 FAX : +1-847-947-8322

WIDIN VIET NAM(OFFICE & FACTORY)

Lot CN5, Hop Thinh Industrial Zone, Hop Thinh Commune, Hiep Hoa District,

Bac Giang Province, Viet Nam

TEL : +84-20-4248-4883

└ HA NOI OFFICE

8th Floor – Hoang Ngoc Building, Lot C2C, Cau Giay Focus Areas of Information

Technology, Dich Vong Hau Ward, Cau Giay District, Ha Noi City, Viet Nam

TEL : +84-24-6287-3828

└ HO CHI MINH OFFICE

4th Floor - Hai Au Building, 39B Truong Son, Ward 4, Tan Binh District, Ho Chi Minh City, Viet Nam

TEL : +84-28-6297-3858

2020.10