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QT Tool

 Quarter Turn Adjustment Tool

Automatic diameter adjustment on general-purpose machines

Tools designed for high-precision machining and precise diameter compensation

  • Simple compensation enables investment reduction
  • Automatic adjustment without dedicated equipment
  • Micro adjustment (ø2.5µm) is possible

“Amazing Ideas / Facts!”

The QT tool utilizes the functions of a general purpose machining center to achieve automatic compensation.
A unique mechanism that enables high-precision fine-tuning in ø2.5µm increments, therefore, ‘High productivity’, ‘high-precision machining’ and ‘reduced capital investment’.

POINT! Automatic correction simply by introducing QT tools and simple fixtures on general-purpose machines

High-precision correction and excellent tracking

Reduction of equipment installation costs

Background / Point for Development

Background

  • In the case of machining difficult-to-machine materials and long cutting distances, the cutting-edge wear progresses quickly, leading to more frequent dimensional adjustments of the cutting edge and insert replacement, which affects the operation of the production line.
  • As a solution, automatic compensation of machining diameters using dedicated equipment is used, but this requires significant capital investment.


Point for Development

  • QT tools utilize the functions of machining centres to achieve automatic compensation of diameters, enabling machining on general-purpose machines.
  • This eliminates the need for special compensation equipment and facilities, reduces investment and improves the utilisation rate of the production line.

Example

WorkpieceCylinder block, bore hole
MaterialFC
Tool Diameterø80.5mm
Cutting
Conditions
  • Revolution: N=4400min-1
  • Cutting speed: V=1112m/min
  • Cutting feed: f=0.35mm/rev
Number of
machining units		100 units
Required accuracy

Required accuracy

Roundness

Product Specification

Normal type

Tool Specification

Process
covered		Iron-based finishing boring
(e.g. cylinder bore finishing, crank hole finishing, connecting rod large end bores, etc.)
Diameterø45 – (Only for through hole)
Standard
conditions
  • Revolution: N= – 6000min-1
  • Cutting feed: f=0.1 – 0.15mm/rev
Resolutionø2.5µm per revolution
Compensation+ø0.2 to -ø0.1

Example of applicable work

HL (Head less) Type

Tool Specification

Process
covered		Iron-based finishing boring
(e.g. crankshaft bearing holes)
Diameterø70 – (Only for stop hole)
Standard
conditions
  • Revolution: N= – 6000min-1
  • Cutting feed: f=0.1 – 0.15mm/rev
Resolutionø2.5µm per revolution
Compensation+ø0.2 – -ø0.1

Example of applicable work

BB (Boring Bar) Type

Tool Specification

Process
covered		Iron-based finishing boring
(e.g. connecting rod small end bore, gear bore finishing, etc.)
Diameterø8 – (Only for small hole)
Standard
conditions
  • Revolution: N= – 6000min-1
  • Cutting feed: f=0.1 – 0.15mm/rev
Resolutionø2.5µm per revolution
Compensation+ø0.2 – -ø0.1

Example of applicable work