Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2018 / Cilt: 18 - Sayı: 3

The Effect of Surface Angle of Flowing Sheet on The Limit Drawing Ratio and The Wall Thickness Change in Drawing of Spherical Bottom Cups

Küresel Tabanlı Kapların Şekillendirilmesinde Sacın Aktığı Yüzey Açısının Limit Çekme Oranı ve Et Kalınlığı Değişimi Üzerindeki Etkisi

Pages
1149–1157
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result of the research, it has been determined that larger limit drawing ratios (β) are obtained in the new spherical deep drawing die which is manufactured in different angles and unchanged punch radius.

📌 3 Key Takeaways

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Objective & Hypothesis:In order to shape of spherical bottom cups in angular deep drawing die, the effect of surface flow angle of the sheet (SFAS), the blank holder force (BHF) and the limit drawing ratio (β) at different radii of the die and the thickness of the cup on the thickness changes were investigated by using DKP37 material.
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Key Findings & Data:Surface slope where the sheet flows angles have θ=0°, θ=5°, θ=10°, θ=15° and the punch were machined of Rz=25 mm radius.
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Conclusion & Impact:As a result of the research, it has been determined that larger limit drawing ratios (β) are obtained in the new spherical deep drawing die which is manufactured in different angles and unchanged punch radius.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In order to shape of spherical bottom cups in angular deep drawing die, the effect of surface flow angle of the sheet (SFAS), the blank holder force (BHF) and the limit drawing ratio (β) at different radii of the die and the thickness of the cup on the thickness changes were investigated by using DKP37 material. Surface slope where the sheet flows angles have θ=0°, θ=5°, θ=10°, θ=15° and the punch were machined of Rz=25 mm radius. The punch diameter is 47,8 mm, the die diameter is 50 mm and the die- punch gap is 0,9 mm. In this study, when the surface flow angle of the sheet was θ=0° and θ=15°, limit drawing ratio was obtained as β=1,87 and β=2,42. Thus, the lowest thickness change in the cups were obtained of 0,723; 0,765; 0,819 and 0,868 mm for θ=0°, θ=5°, θ=10° and θ=15°, respectively. As a result of the research, it has been determined that larger limit drawing ratios (β) are obtained in the new spherical deep drawing die which is manufactured in different angles and unchanged punch radius.

Özet

Küre tabanlı kapların açılı çekme kalıplarında şekillendirilmesi için DKP37 malzemesi kullanılarak, sacınaktığı yüzey açısı (SAYA), baskı plaka kuvveti (BPK) ve matris farklı yarıçaplarında limit çekme oranı (β) vekap et kalınlık değişimleri üzerindeki etkileri araştırılmıştır. Sacın aktığı yüzey eğimi θ=0°, θ=5°, θ=10°,θ=15° açılarda, zımba ucu Rz=25 mm radyüs ile imal edilmiştir. Zımba çapı 47,8 mm, matris çapı 50 mmve matris aralığı 0,9 mm dir. Bu çalışmada, sacın aktığı yüzey açısı (SAYA), θ=0°’de β=1,87 iken, θ=15° deβ=2,42 oranı yakalanmış, böylece kaptaki, en düşük kalınlık değişimi θ=0°, θ=5°, θ=10°, ve θ=15° içinsırasıyla 0,723; 0,765; 0,819 ve 0,868 mm olarak elde edilmiştir. Araştırma sonucunda değişik açılardave sabit zımba yarıçapında imal edilen yeni tip küresel derin çekme kalıbında, açısız kalıplara göre dahabüyük çekme oranlarının (β) elde edildiği belirlenmiştir.

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Cite This Article

ÖZEK, C., ÜNAL, E. (2022). The Effect of Surface Angle of Flowing Sheet on The Limit Drawing Ratio and The Wall Thickness Change in Drawing of Spherical Bottom Cups. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 18 - Sayı: 3, 1149–1157. https://ajindex.com/articles/429973

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