アルミニウム薄板の限界絞り比におよぼす寸法効果について

竹内 寛司; 金森 弘祐; 市川 雄庸

doi:10.2464/jilm.19.12_550

On the scale effect in the cylindrical cup drawing of sheet aluminum on the limiting drawing ratio

Kanji TAKEUCHI, Hirosuke KANAMORI, Yusuke ICHIKAWA

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JOURNAL FREE ACCESS

1969 Volume 19 Issue 12 Pages 550-558

DOI https://doi.org/10.2464/jilm.19.12_550

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Published: December 30, 1969 Received: August 23, 1969 Available on J-STAGE: July 23, 2008 Accepted: - Advance online publication: - Revised: -
Correction information
Date of correction: July 23, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : Most of the products in sheet aluminum press-shops are cylindrical shells. The investigation of dimensional effects in cylindrical cup drawing will be helpful in the application of the results of drawing tests at laboratories or sheet mills to the drawing performance in any press-shops.
This paper describes the effects of punch diameter and sheet thickness on the limiting drawing ratio. The sheets used were 2S-0 sheets of the same mechanical properties with thicknesses of 0.6, 0.8, 1.0, and 1.2mm. The punches used were about 30, 54, 120, and 180 mm in diameter, having noses of various curvatures. The limitins drawing ratio were determined under the specified conditions.
The results obtained were as follows:
(1) The limiting drawing ratio (L.D.R.) linearly decreased with the increase of the ratio between the punch diameter (d1) and sheet thickness (to), or d1/t0.
(2) When noses of the punches were in the same profile, the following equation will be applicable: LDR = -A (d1/t0) + B where A and B are constants, which shall be determined by experiments.
Right : Most of the products in sheet aluminum press-shops are cylindrical shells. The investigation of dimensional effects in cylindrical cup drawing will be helpful in the application of the results of drawing tests at laboratories or sheet mills to the drawing performance in any press-shops.
This paper describes the effects of punch diameter and sheet thickness on the limiting drawing ratio. The sheets used were 2S-0 sheets of the same mechanical properties with thicknesses of 0.6, 0.8, 1.0, and 1.2mm. The punches used were about 30, 54, 120, and 180 mm in diameter, having noses of various curvatures. The limiting drawing ratio were determined under the specified conditions.
The results obtained were as follows:
(1) The limiting drawing ratio (L.D.R.) linearly decreased with the increase of the ratio between the punch diameter (d₁) and sheet thickness (t₀), or d₁/t₀.
(2) When noses of the punches were in the same profile, the following equation will be applicable: LDR = -A (d₁/t₀) + B
where A and B are constants, which shall be determined by experiments.

Date of correction: July 23, 2008 Reason for correction: - Correction: CITATION Details: Wrong : 1) S. Y. Chung, H. W. Swift: Proc. Inst. Mech. Engrs. 165 (1951) 199.
3) J. F. Wallace: J. Inst. Metals, 91 (1962~3) 19.
5) E. Siebel, E. Kotthaus: Mitt. Forsch. -Ges. Blechverarbeitung, 15 (1955) 181.
6) J. F. wallacc: J. of The Iron and steel Inst. 184 (1956) 144.
8) G.Sachs: Principles and Methods of Sheet Metal Fabricating (Reinhold Publishing Corp. New York) (1966) 193.

Right : 1) S. Y. Chung, H. W. Swift: Proc. Inst. Mech. Engrs. 165 (1951) 199.
3) J. F. Wallace: J. Inst. Metals, 91 (1962~3) 19.
5) E. Siebel, E. Kotthaus: Mitt. Forsch. -Ges. Blechverarbeitung, 15 (1955) 181.
6) J. F. wallace: J. of The Iron and steel Inst. 184 (1956) 144.
8) G.Sachs: Principles and Methods of Sheet Metal Fabricating (Reinhold Publishing Corp. New York) (1966) 193.

Date of correction: July 23, 2008 Reason for correction: - Correction: PDF FILE Details: -

Date of correction: July 23, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : Most of the products in sheet aluminum press-shops are cylindrical shells. The investigation of dimensional effects in cylindrical cup drawing will be helpful in the application of the results of drawing tests at laboratories or sheet mills to the drawing performance in any press-shops.
This paper describes the effects of punch diameter and sheet thickness on the limiting drawing ratio. The sheets used were 2S-0 sheets of the same mechanical properties with thicknesses of 0.6, 0.8, 1.0, and 1.2mm. The punches used were about 30, 54, 120, and 180 mm in diameter, having noses of various curvatures. The limiting drawing ratio were determined under the specified conditions.
The results obtained were as follows:
(1) The limiting drawing ratio (L.D.R.) linearly decreased with the increase of the ratio between the punch diameter (d₁) and sheet thickness (t₀), or d₁/t₀.
(2) When noses of the punches were in the same profile, the following equation will be applicable: LDR = -A (d₁/t₀) + B
where A and B are constants, which shall be determined by experiments.
Right : Most of the products in sheet aluminum press-shops are cylindrical shells. The investigation of dimensional effects in cylindrical cup drawing will be helpful in the application of the results of drawing tests at laboratories or sheet mills to the drawing performance in any press-shops.
This paper describes the effects of punch diameter and sheet thickness on the limiting drawing ratio. The sheets used were 2S-0 sheets of the same mechanical properties with thicknesses of 0.6, 0.8, 1.0, and 1.2mm. The punches used were about 30, 54, 120, and 180 mm in diameter, having noses of various curvatures. The limiting drawing ratio were determined under the specified conditions.
The results obtained were as follows:
(1) The limiting drawing ratio (L.D.R.) linearly decreased with the increase of the ratio between the punch diameter (d₁) and sheet thickness (t₀), or d₁/t₀.
(2) When noses of the punches were in the same profile, the following equation will be applicable:
LDR = -A (d₁/t₀) + B
where A and B are constants, which shall be determined by experiments.

Date of correction: July 23, 2008 Reason for correction: - Correction: CITATION Details: Wrong : 1) S. Y. Chung, H. W. Swift: Proc. Inst. Mech. Engrs. 165 (1951) 199.
3) J. F. Wallace: J. Inst. Metals, 91 (1962~3) 19.
5) E. Siebel, E. Kotthaus: Mitt. Forsch. -Ges. Blechverarbeitung, 15 (1955) 181.
6) J. F. wallace: J. of The Iron and steel Inst. 184 (1956) 144.
8) G.Sachs: Principles and Methods of Sheet Metal Fabricating (Reinhold Publishing Corp. New York) (1966) 193.

Right : 1) S. Y. Chung, H. W. Swift: Proc. Inst. Mech. Engrs. 165 (1951) 199.
3) J. F. Wallace: J. Inst. Metals, 91 (1962-3) 19.
5) E. Siebel, E. Kotthaus: Mitt. Forsch. -Ges. Blechverarbeitung, 15 (1955) 181.
6) J. F. wallace: J. of The Iron and steel Inst. 184 (1956) 144.
8) G.Sachs: Principles and Methods of Sheet Metal Fabricating (Reinhold Publishing Corp. New York) (1966) 193.

Date of correction: July 23, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

Most of the products in sheet aluminum press-shops are cylindrical shells. The investigation of dimensional effects in cylindrical cup drawing will be helpful in the application of the results of drawing tests at laboratories or sheet mills to the drawing performance in any press-shops.
This paper describes the effects of punch diameter and sheet thickness on the limiting drawing ratio. The sheets used were 2S-0 sheets of the same mechanical properties with thicknesses of 0.6, 0.8, 1.0, and 1.2mm. The punches used were about 30, 54, 120, and 180 mm in diameter, having noses of various curvatures. The limiting drawing ratio were determined under the specified conditions.
The results obtained were as follows:
(1) The limiting drawing ratio (L.D.R.) linearly decreased with the increase of the ratio between the punch diameter (d₁) and sheet thickness (t₀), or d₁/t₀.
(2) When noses of the punches were in the same profile, the following equation will be applicable:
LDR = -A (d₁/t₀) + B
where A and B are constants, which shall be determined by experiments.

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Correction information

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