BIG DAISHOWA High Performance Tooling Solutions Vol 3

CHAMFER MILLS

CENTER BOY Accurate Positioning of Drill Holes and Chamfering Can be Performed Simultaneously

L

Locking Screw

Fig. 1—Standard Type

L

L s

Locking Screw

Fig. 2—Long Type

Point Angle

Catalog Number

Insert Model

Spare Locking Screw

Fig.

ØDs

D 2

Ød

L

Ls

ST10-CBY09010 ST12-CBY09013 ST16-CBY09016 ST20-CBY09022

1 1 1 1

10mm (.394) 12mm (.472) 16mm (.630) 20mm (.787)

.394 .512 .630 .866

.035 .035 .039 .059

5.906 5.906 7.087 7.087 8.661

CBY09010-5P CBY09013-5P CBY09016-5P CBY09022-5P

H0403-5P H0504-5P H0504-5P H0505-5P

90º

ST20-CBY09013-220 ST20-CBY09013-260 ST32-CBY09022-260 ST32-CBY09022-300

2

20mm (.787)

.512

.035

4.724

CBY09013-5P

H0403-5P

10.236 10.236 11.811

2

32mm (1.260)

.866

.059

4.724

CBY09022-5P

H0505-5P

ST12-CBY12013

120º

1

12mm (.472)

.512

.035

5.906

— CBY12013-5P

H0403-5P

Hand feeding is not recommended. ! CAUTION

• Wrench and screws are included; inserts must be ordered separately

CENTER BOY THROWAWAY BIT Precision-Finished Cutting Edge with Superb Sharpness Since the bit can be replaced, there is no need for regrinding and the performance remains stable at all times.

Point Angle

Catalog Number

Body Model

CBY09010-5P CBY09013-5P CBY09016-5P CBY09022-5P CBY12013-5P

ST10-CBY09010

ST12-CBY09013/ST20-CBY09013

90º

ST16-CBY09016

ST20-CBY09022/ST32-CBY09022

120º

ST12-CBY12013

• Bits are available in 5 pcs. • High-speed steel/TiN coating (Bit material)

CENTER BOY CUTTING DATA Vc: Cutting speed (SFM), f = Feed per revolution (in/rev)

Chamfering

Centering Cast Iron

Catalog Number

Steel

Cast Iron

Aluminum

Steel

Aluminum

Vc 65

f

Vc 65

f

Vc

f

Vc 80

f

Vc

f

Vc

f

150

100

165

CBY09010... CBY09013... CBY12013... CBY09016... CBY09022...

80

80

165

100

115

180

.004

.005

.006

.003

.004

.006

100 115

115 130

180 200

150 165

130 150

200 215

• The values in this table are only for reference and should be adjusted based on workpiece hardness, rigidity, and chamfering amount • Lower the cutting speed Vc if chatter occurs • Keep the projection length as short as possible

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