التفاصيل البيبلوغرافية
| العنوان: |
Prediction of the machine tool errors under quasi-static load : Developing methodology through the synthesis of bottom-up and top-down modeling approach |
| المؤلفون: |
Szipka, Károly |
| بيانات النشر: |
KTH, Industriell produktion, 2015. |
| سنة النشر: |
2015 |
| المجموعة: |
DiVA Archive at Upsalla University |
| مصطلحات موضوعية: |
Engineering and Technology, Teknik och teknologier |
| الوصف: |
One of the biggest challenges in the manufacturing industry is to increase the understanding of the sources of the errors and their effects on machining systems accuracy. In this thesis a new robust empirical evaluation method is developed to predict the machine tool errors under quasi-static load including the effect of the variation of stiffness in the workspace, the geometric and the kinematic errors. These errors are described through combined computational models for a more accurate assessment of the machine tool’s capability. The purpose of this thesis is to establish such methodology through the synthesis of the bottom-up and the top-down modeling approach, which consists the combination of the direct (single axis measurements by laser interferometer) and indirect (multi-axis measurements by loaded double ball-bar) measurement technics. The bottom-up modeling method with the direct measurement was applied to predict the effects of the geometric and kinematic errors in the workspace of a machine tool. The top-down modeling method with the indirect measurement was employed to evaluate the variation of the static stiffness in the workspace of a machine tool. The thesis presents a case study demonstrating the applicability of the proposed approach. The evaluation technic extended for machine tools with various kinematic structures. The methodology was implemented on a three and a five axis machine tool and the results expose the potential of the approach. |
| Original Identifier: |
oai:DiVA.org:kth-186143 |
| نوع الوثيقة: |
Text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Degree Project in Production Engineering Management, Second Level ; 665 |
| الاتاحة: |
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186143 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edsndl.UPSALLA1.oai.DiVA.org.kth.186143 |
| قاعدة البيانات: |
Networked Digital Library of Theses & Dissertations |