Общий каталог Tungaloy 2020 - 2021 - страница 1343

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Deep hole drilling head series

B

Single Tube System (STS) and Double Tube System (DTS)

Single Tube System (STS)

Single tube system The STS may also be referred to as the BTA C system in the deep hole drilling process. A large Oil Guide

volume of coolant is pumped under high pres-WorkpieceDrillbushpressure
materialDrilltubeSealheadChip
sure to the cutting area in the workpiece. Chips
headBar restbox

are then forced out through the drill tube at D the back and they do not touch workpiece al- lowing super surface fi nish. STS is a very good method to obtain holes of high productivity and

high accuracy by using a dedicated drilling machine and a sealing with the workpiece. E

Double Tube System (DTS)

Double tube system The DTS is characterized by its two tube con- F struction and is therefore known as the double tube system. A sealing system and pressure Double tube

Workpiece Guide connector

Drill Outer tube Chip

head, which is required in the Single Tube material bush

head Inner tube box

System (STS) is not necessary for the DTS and G it is therefore suitable for conventional general purpose machines such as lathes or machining centers.

In general, because of less effi cient chip evacuation than the STS the recommended max No need for seal H drilling depth is 1000mm. However, the unique DTC-R tube connector that is capable of supplying high pressure coolant can successfully achieve drilling depths of up to 2000 mm. I

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