Cutting data EWN 2-152 / EWE 2-152
Ø 2.0-152.0
The cutting data are valid for the fine boring heads EWN 2-152 and EWE 2-152 and are applicable when tool holders and boring cutters made of carbi- de are used. The different diameter ranges are in line with the existing accessories. On a double page, there are cutting data for one specific diameter range. The columns “universal” and “optimized” differ in terms of cutting data and inserts. The cutting data in the column „optimized” are applicable when the best possible accessories for each diameter range are used. This includes the use of adjustable tool holders for diameter 9.8 mm and big- ger. The optimized accessories are clamped in the centre, or close to the centre position. Therefore the imbalance is minimized which permits higher cutting speeds. The listed inserts reflect the best possible choice under consideration of workpiece material and boring depth.
In the column “universal” , the cutting data are lower and the choice of inserts is reduced. The lower data permit a bigger applicable boring range (starting diameter + 5 mm). These data are recommended for single piece production.
Important: The cutting data must in any case be adapted to the working conditions.
Application advices for adjustable tool holders (EWN 2-152/EWE 2-152, boring range Ø 9.8 – 54 mm, optimized)
Set adjustable tool holder to the centre position by means of the scale screw
Set the insert holder to the desired diameter
Measuring cut: Reduce diame- ter setting by 0.1 mm by means of the scale screw • Adjust insert holder to the measuring cut diameter • Performmeasuring cut, measure bore diameter • Adjust difference by means of scale screw
D
D
Extended boring range With special accessories, the boring range of the EWN/EWE 2-152 to Ø 152 mm can be extended. The cutting data are listed on page 134-137.
EWN 2-152/EWE 2-152
EWN 2-152/EWE 2-152
x
Ø 80 - 152
View 180° twisted
x
Ø 54 - 80
615.306
615.392
615.306
615.387B
In the table the following terms and dimensions are used: Workpiece material: Material no. according to DIN or generally used designation Boring depth X: Projection of the tool holder
(mm)
Insert:
Detailed information about the inserts is shown in the BIG KAISERmain catalogue.
R:
Nose radius of boring cutter/insert
(mm)
Vc:
Cutting speed
(m/min)
Stock allow.:
Sock allowance per cut in Ø
(mm)
fn:
Feed per revolution
(mm/U)
Ra:
Surface quality (Ra 1.6 µm for N7)
Balanceable fine boring head EWB 2-50 There are special cutting data and adjustment tables for the balanceable fine boring head EWB 2-50. These data tables are delivered with the tool.
108
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