Relationship between the Punch-Die Clearance and Shearing Quality of Progressive Shearing Die

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 機械工程系暨機械工程學系數位機電研究所 > 期刊論文 > Item 987654321/21114

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题名:	Relationship between the Punch-Die Clearance and Shearing Quality of Progressive Shearing Die
作者:	Lo, SP (Lo, Ship-Peng) Chang, DY (Chang, Dar-Yuan) Lin, YY (Lin, Yeou-Yih)
贡献者:	機械系
关键词:	Metal shearing Progressive shearing die Punch-die clearance
日期:	2010
上传时间:	2011-12-15 15:25:04 (UTC+8)
摘要:	This study performed experiments for the progressive shearing die of thin phosphorous bronze sheet to investigate effects of punch materials, punch-die clearance, sheared angle, and number of shearing strokes on burnish band of a sheared surface and burr width of shearing corner. It also analyzed the relationship between height of the burnish band and gravimetric wear rate. The concept of manufacturing tolerance was applied to establish an analytical model of the dimensional tolerance between punch and punch base. It was concluded that after assembling the punch and punch base under the worst conditions, the possible offset of the punch center and the punch-die clearance can be analyzed, and the burr width of the shearing corner can be accessed. Based on the experimental data, four linear predictive models elucidating the characteristics of shearing qualities such as punch-die clearance, punch gravimetric wear rate, and height of the burnish band of a sheared surface can be deduced. Besides, a predictive model of burr width was built by using the least-square method, exponential method, and polynomial regressive method. The result is highly referential to the assessment of sheared products as well as the prediction of tool life.
显示于类别:	[機械工程系暨機械工程學系數位機電研究所] 期刊論文

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