Page 201 - ISCAR(HOLE_MAKING_CATALOG_65)

USER GUIDE

Machine Setup

STS and DTS Guide bush
Tolerance
Workpiece rotating system Guide bush tolerance should be G6 in order to keep
Workpiece - rotating Guide bush Tool - fixed consistent tool life and cutting accuracy. Diameters
for G6 tolerance are shown on the right.
øD (mm) G6 tolerance (mm)
16.00 - 18.00 +0.006 - +0.017 DEEP DRILLING - BTA SYSTEM
18.01 - 30.00 +0.007 - +0.020
30.01 - 40.00 +0.009 - +0.025

Up to Material
0.02 mm Guide bush System Advantage
material
Cost efficient
• Only used when the workpiece and the Hardened steel Workpiece rotating (inexpensive)
tool axis are on the same line. Tool rotating Long life
• Better hole straightness and wear resistance on guide Tungsten carbide Workpiece rotating guide bush
bush are provided compared to the tool rotating system.
• Keep the alignment between guide bush Guide bushing
and spindle within 0.02 mm. (use hardened steel or carbide)

Tool rotating system
Tool - rotating Guide bush Workpiece - fixed

¿D

Coolant
Up to Temperature
0.02 mm The proper coolant temperature is 30 - 40°C (90 - 100°F).
If the temperature exceeds this range, the
coolant will deteriorate easily and may shorten
• Can be used when the workpiece and the tool life and generate poor surface finish.
tool axis are not on the same line.
• Keep the alignment between guide bush Filtration
and spindle within 0.02 mm. The coolant must be filtered properly in order to
protect guide pads and workpiece surface.
DTS
Positioning of outer tube and guide bush Water-soluble type
Be sure to set the outer tube more than 5.0 mm into Around 10% (dilution rate 1/10) is recommended
the guide bush to properly supply the coolant. for the concentration of water-soluble
coolant in order to protect guide pads.
Positioning of workpiece material and guide bush
Sealing is not required for DTS because of the
vacuum effect, but keep the gap between workpiece
material and guide bush within 1.0 mm.
Workpiece Guide bush

Outer tube

At least
5.0 mm
Up to 1.0 mm

199