STRATEGY OF MILLING CENTER THERMAL ERROR COMPENSATION USING A TRANSFER FUNCTION MODEL AND ITS VALIDATION OUTSIDE OF CALIBRATION RANGE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00339591" target="_blank" >RIV/68407700:21220/19:00339591 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.17973/MMSJ.2019_11_2019065" target="_blank" >https://doi.org/10.17973/MMSJ.2019_11_2019065</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17973/MMSJ.2019_11_2019065" target="_blank" >10.17973/MMSJ.2019_11_2019065</a>

Jazyk výsledku

angličtina

Název v původním jazyce

STRATEGY OF MILLING CENTER THERMAL ERROR COMPENSATION USING A TRANSFER FUNCTION MODEL AND ITS VALIDATION OUTSIDE OF CALIBRATION RANGE

Popis výsledku v původním jazyce

Achieving high workpiece accuracy is a long-term goal of machine tool designers. There are many causes of workpiece inaccuracy, with thermal errors being the most dominant. Indirect compensation (using predictive models) is a promising strategy to reduce thermal errors without increasing machine tool costs. A modelling approach using thermal transfer functions (a dynamic method with a physical basis) has the potential to deal with the issue. The method does not require any intervention into the machine tool structure and its modelling and calculation speed are suitable for real-time applications with results of up to 80% thermal error reduction. Compensation models for machine tool thermal errors based on transfer functions (TFs) were successfully applied on various kinds of single-purpose machines (milling, turning, floor-type, etc.) and implemented directly into various control systems. The aim of this research is to prove the compensation model applicability within the real machining conditions whereas the most of known thermal errors models end up with offline verification of their approximation quality. The introduced model of a milling centre operates in two machining directions Y and Z and describes thermal errors caused by spindle speed, feed drives and ambient temperature influences. The model is implemented into machine tool control system (Fanuc FS31i-B5). The real-time verification upon finishing cutting operation and conditions different from model calibration is discussed in more detail.

Název v anglickém jazyce

STRATEGY OF MILLING CENTER THERMAL ERROR COMPENSATION USING A TRANSFER FUNCTION MODEL AND ITS VALIDATION OUTSIDE OF CALIBRATION RANGE

Popis výsledku anglicky

Achieving high workpiece accuracy is a long-term goal of machine tool designers. There are many causes of workpiece inaccuracy, with thermal errors being the most dominant. Indirect compensation (using predictive models) is a promising strategy to reduce thermal errors without increasing machine tool costs. A modelling approach using thermal transfer functions (a dynamic method with a physical basis) has the potential to deal with the issue. The method does not require any intervention into the machine tool structure and its modelling and calculation speed are suitable for real-time applications with results of up to 80% thermal error reduction. Compensation models for machine tool thermal errors based on transfer functions (TFs) were successfully applied on various kinds of single-purpose machines (milling, turning, floor-type, etc.) and implemented directly into various control systems. The aim of this research is to prove the compensation model applicability within the real machining conditions whereas the most of known thermal errors models end up with offline verification of their approximation quality. The introduced model of a milling centre operates in two machining directions Y and Z and describes thermal errors caused by spindle speed, feed drives and ambient temperature influences. The model is implemented into machine tool control system (Fanuc FS31i-B5). The real-time verification upon finishing cutting operation and conditions different from model calibration is discussed in more detail.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MM Science Journal

ISSN

1803-1269

e-ISSN

—

Svazek periodika

2019

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

3156-3163

Kód UT WoS článku

000532569400022

EID výsledku v databázi Scopus

2-s2.0-85074985343