Problema achiilor lungi la gaurire

La gaurirea pe centre de prelucrare verticale, achiile lungi si continue reprezinta una dintre cele mai frecvente cauze de intrerupere a productiei. Acestea se infasoara in jurul sculei, creand probleme in cascada care afecteaza calitatea piesei si productivitatea generala.

Efectele infasurarii achiilor

  • Conditii de taiere instabile cu variatii ale fortelor de aschiere
  • Evacuare deficitara a achiilor din zona de taiere
  • Acumulare de caldura care genereaza deviatie dimensionala
  • Intreruperi ale masinii pentru indepartarea manuala a achiilor
  • Zgarierea suprafetei alezajului din cauza achiilor recirculate

Solutia Hartford: functia de fragmentare a achiilor

Hartford a dezvoltat o functie de fragmentare controlata la gaurire integrata in controllerul CNC. Scula avanseaza la o adancime specificata, se retrage scurt, apoi continua taiererea — fragmentand achiile lungi in bucati mici care se evacueaza usor.

Avantajele functiei

  • Cresterea eficientei productiei cu 20–50% prin eliminarea timpilor de oprire
  • Achii granulare care nu zgarie suprafata alezajului
  • Functie activabila fara a afecta timpul total al ciclului
  • Curatare semnificativ simplificata
  • Uzura sculei redusa prin sarcini de taiere mai consistente

Materiale compatibile

Otel, otel inoxidabil, aliaje de aluminiu si mase plastice tehnice.

Implementare

Functia este implementata la nivelul sistemului de control CNC si nu necesita investitii hardware suplimentare — o optimizare de software cu beneficii imediate de productivitate.

The Problem of Long Chips in Drilling

When drilling on vertical machining centers, long continuous chips are one of the most frequent causes of production interruptions. They wrap around the tool, creating cascading problems that affect both part quality and overall productivity.

Effects of Chip Wrapping

  • Unstable cutting conditions with varying cutting forces
  • Poor chip evacuation from the cutting zone
  • Heat buildup causing thermal expansion and dimensional deviations
  • Machine interruptions requiring manual chip removal
  • Bore surface scratching from recirculated chips

Hartford's Solution: Chip Breaking Function

Hartford has developed a controlled chip breaking function integrated in the CNC controller. The tool advances to a specified depth, briefly retracts, then continues cutting — breaking long chips into small fragments that evacuate easily.

Function Benefits

  • Production efficiency improvement of 20–50% by eliminating downtime
  • Granular chips that do not scratch the bore surface
  • Activatable without affecting total machining cycle time
  • Significantly simplified cleanup
  • Reduced tool wear through more consistent cutting loads

Compatible Materials

Steel, stainless steel, aluminum alloys and engineering plastics.

Implementation

The function is implemented at the CNC control system level with no additional hardware investment — a software optimization with immediate productivity benefits.