Otomotiv Gövde Bileşenleri için Yenilikçi Tasarım ve Modüler Bir Fikstürün Geliştirilmesi

Öz

Otomotiv endüstrisinde, geleneksel kontrol fikstürleri, parçaların boyutsal kalitesini güvence altına almak için kritik ekipmanlardır. Ancak yeni araç modellerine yönelik artan talep, yeni gövde bileşenlerinin sayısında önemli bir artışa neden olmuştur. Bu bağlamda, her bileşen için özel üretilen kontrol fikstürlerinin kullanımı giderek daha maliyetli ve yer kaplayıcı hale gelmiştir. Bu çalışma, özellikle rijit olmayan parçaların ölçümü için esnek ve ekonomik alternatifler sunan yenilikçi bir modüler kontrol fikstürü sistemini tanıtmaktadır. Önerilen yaklaşım, modüler desteklerle fiziksel sabitleme işlemini ve PolyWorks® yazılımında 3 boyutlu tarama ile en uygun hizalama algoritmalarını kullanarak sanal referanslama yöntemini birleştirmektedir. Yöntem, farklı rijitlik seviyelerine sahip üç gövde parçası (ön panel, taban traversi ve B-sütunu) üzerinde doğrulanmıştır. Geleneksel fikstürlü ve önerilen fikstürsüz yöntem ile elde edilen yüzey sapmaları, renk haritaları ve nokta tabanlı ölçümler karşılaştırılmıştır. İncelenen fikstürsüz sanal referanslama yönteminin sonuçları, fikstür temelli sonuçlarla yüksek düzeyde korelasyon göstermiş ve mutlak benzerlik oranları %90’ın üzerinde gerçekleşmiştir. Bulgular, modüler fikstür sisteminin sanal hizalama araçlarıyla birlikte kullanıldığında fikstür ölçüm doğruluğunu etkin biçimde sağlayabileceğini ve modern üretim süreçlerinde fikstür bağımlılığını, maliyeti ve kurulum karmaşıklığını azaltmak için uygulanabilir bir yol sunduğunu ortaya koymaktadır.

Anahtar Kelimeler

• Metroloji
• Kontrol Fikstürü
• Kalite
• 3B Lazer Ttarama
• Kordinat Ölçüm Teknikleri

Innovative Design and Development of A Modular Fixture for Automotive Body Components

Öz

In the automotive industry, conventional checking fixtures (CF) are critical equipment to secure the dimensional quality of components. However, the growing demand on new vehicle models has led an increase of number of the new body components. In this regard, the use of dedicated CFs became more costly and space consuming. This study introduces an innovative modular checking fixture system that provides flexible and cost-effective alternatives for part inspection of non-rigid components. The approach combines physical stabilization via modular supports and virtual datuming by using 3D scanning and best-fit algorithms within PolyWorks® software. The method was validated on three representative of body parts of varying rigidity: dashboard panel, floor cross member and B-pillar. The surface deviations that are captured via both CF and the proposed CF-less Advanced Best Fit (ABF) method were compared using contour maps and point-based measurements. Studied ABF method showed high correlation with the CF-based results by achieving absolute similarity percentages typically above 90%. The findings suggest that the modular fixture system can effectively replicate CF measurement accuracy when combined with virtual alignment tools and offers a viable pathway to reduce fixture dependency, cost, and setup complexity in modern manufacturing.

Anahtar Kelimeler

• Metrology
• Checking Fixture
• Quality
• 3D Laser Scanning
• Coordinate Measuring Techniques

Kaynakça

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