BIG DAISHOWA High Performance Tooling Solutions Vol 2

FINE BORING HEADS

SERIES 310—INSERT HOLDERS 30º

C 1

Head Type

Catalog Number

Reference Number 11.380.321 11.380.322 11.380.323 11.380.324 11.380.325 11.380.325 Reference Number 11.380.326 11.380.327 11.380.328 11.380.329 11.380.330 11.380.330

ØD

E

C 1

C 2

Insert

C 2

ENH2-1T30 ENH3-1T30 ENH4-1T30 ENH5-1T30 ENH6-1T30 ENH6-1T30

EWE25/EWN25

1.102-1.417 1.417-1.811 1.772-2.283 2.205-2.874 2.677-3.937 3.937-6.024

.274 .370 .398 .453 .492 .492

1.398 1.654 1.929 2.244 2.795 3.425

1.173 1.311 1.587 1.906 2.453 3.093

TP07

EWN32

EWE41/EWN41 EWE53/EWN53 EWE68/EWN68 EWE100/EWN100

TC11

SERIES 310—INSERT HOLDERS 45º

C 1

Head Type

Catalog Number

ØD

E

C 1

C 2

Insert

C 2

ENH2-1T45 ENH3-1T45 ENH4-1T45 ENH5-1T45 ENH6-1T45 ENH6-1T45

EWE25/EWN25

1.102-1.417 1.417-1.811 1.772-2.283 2.205-2.874 2.677-3.937 3.937-6.024

.274 .370 .398 .453 .492 .492

1.398 1.654 1.929 2.244 2.795 3.425

1.213 1.370 1.646 1.961 2.512 3.142

TP07

EWN32

EWE41/EWN41 EWE53/EWN53 EWE68/EWN68 EWE100/EWN100

TC11

SERIES 310—INSERT HOLDERS 25º

25º

Head Type

Catalog Number

Reference Number

ØD

E Insert

ENH3-1T25 ENH4-1T25 ENH5-1T25 ENH6-1T25 ENH6-1T25

EWN32

10.689.197 1.260-1.654 .291 11.380.306 1.614-2.126 .319 11.380.341 2.087-2.756 .394 11.380.587 2.677-3.937 .492 11.380.587 3.937-6.024 .492

ACCESSORIES

EWE41/EWN41 EWE53/EWN53 EWE68/EWN68 EWE100/EWN100

TC11

SPARE PARTS PG. 553

INSERTS PG. 516

BACK BORING INSTRUCTIONS For back boring, it is required to enter into the bore off center, with a tool adjusted to the back bore diameter. In this respect, the back bore diameter «D» as well as the diameters of the entry bore «C» and the tool body «A», are related to each other. In order to check the feasibility of the back boring operation and to select the best possible tool combination, these values can be calculated as follows:

C ØD 1

Example: Calculation of the minimum entry bore diameter «C». Given: Back Bore Diameter ØD=93mm Tool Combination EWN53, with Insert Holder No. 3, ØD1=50 mm C= = =71.5mm ØD + ØD1 2 93 + 50 2 Counter clockwise spindle rotation is required for back boring operations. The cutting edge is at a shorter length than the boring head. Consider total length of tool. Check the space at the back side of the workpiece. ! CAUTION

Min Entry Bore Diameter «C»

ØD + ØD 1 2

C=

Max Back Bore Diameter «ØD» ØD=2C-ØD 1 Max Tool Body Diameter «ØD 1 » ØD 1 =2C-ØD

ØD

484

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