Каталог Tungaloy глубокое сверление 1 - страница 17

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Machine setup

STS and DTS

Workpiece rotating system Tool rotating system

Workpiece - rotating Guide bush Guide bush Workpiece - fixed Tool - rotating Tool - fixed

Up to Up to 0.02 mm 0.02 mm

- Only used when the workpiece and the tool axis are- Can be used when the workpiece and the tool axis
on the same line.are not on the same line.
- Better hole straightness and wear resistance on- Keep the alignment between guide bush and spindle
guide bush are provided compared to the tool-within 0.02 mm.
rotating system.
- Keep the alignment between guide bush and spindle
within 0.02 mm.
DTS
Positioning of outer tube and guide bushGuide bush Workpiece

Be sure to set the outer tube more than 5.0 mm into the guide bush to Outer tube properly supply the coolant. 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. At least 5.0 mm Up to 1.0 mm

Guide bush

Tolerance

Guide bush tolerance should be øD (mm) G6 tolerance (mm) G6 in order to keep consistent 16.00 - 18.00 +0.006 - +0.017 tool life and cutting accuracy.

Diameters for G6 tolerance are 18.01 - 28.00 +0.007 - +0.020

shown on the right. Guide bushing (use hardened steel or carbide) Material

Guide bush materialSystemAdvantage
Hardened steelWorkpiece rotatingCost efficient (inexpensive)
Tungsten carbideTool rotating Workpiece rotatingLong life of guide bush

Coolant

TemperatureFiltration
The proper coolant temperature is 30 - 40°CThe coolant must be filtered properly in order to
(90 - 100°F).protect guide pads and workpiece surface.
If the temperature exceeds this range, the coolantWater-soluble type

will deteriorate easily and may shorten tool life and Around 10% (dilution rate 1/10) is recommended for generate poor surface finish. the concentration of water-soluble coolant in order to

protect guide pads.