Effective Stripper-Holding on High Speed Precision Blanking of Electronic Machine Parts

F. Sekine

doi:10.4028/www.scientific.net/AMR.6-8.805

Paper Titles

A Global Approach of the Finite Element Simulation of Hot Stamping
p.763

Magnesium Sheet Metal Forming Considering its Specific Yield Behavior
p.771

Determination of Mechanical Properties for the Hydroforming of Magnesium Sheets at Elevated Temperature
p.779

Modelling and Analysis of Integrated Hotforming and Quenching Processes
p.787

Basic Investigations on the Hot Stamping Steel 22MnB5
p.795

Effective Stripper-Holding on High Speed Precision Blanking of Electronic Machine Parts
p.805

Methods for Monitoring of Laser Cutting by Means of Acoustic and Photodiode Sensors
p.809

Advanced Cutting Technology in Process Chains for High Strength Steels
p.817

An Automatic Cost Calculation System for 3-D Laser Cutting Based on Characteristic Numbers
p.825

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 6-8Effective Stripper-Holding on High Speed Precision...

Effective Stripper-Holding on High Speed Precision Blanking of Electronic Machine Parts

Abstract:

The blanking of thin sheet metals using progressive dies is an important process on production of precision electronic machine parts. As a model of IC leadframe, an I-shaped and an Lshaped models were blanked and influences of blanking conditions on dimensional accuracy of blanked lead were examined. Furthermore, a mechanical model is proposed to explain the affect of the blanking conditions on product accuracy. In these days, more fine leads are required as electronic machines become more precise and accurate. It must be treated that leads are firmly held for blanking leadframes accurately. In this paper, an effective method of stripper holding leads strongly are discussed and a new method using newly designed stripper is proposed. Consequently the effect of it on lead accuracy is proved.