Journal of Mechanical Engineering Science and Technology
Vol 1, No 2 (2017)

Blanking Clearance and Punch Velocity Effects on The Sheared Edge Characteristic in Micro-Blanking of Commercially Pure Copper Sheet

Didin Zakaria Lubis (Mechanical Engineering Department,Engineering Faculty,Universitas Negeri Malang, Semarang St.No.5 Malang,East Java, Indonesia)
Ichsan Ristiawan (Mechanical Engineering Department, Akademi Teknik Soroako, Soemantri Brojonegoro St. No.1, Soroako, LuwuTimur, South Sulawesi, Indonesia)

Article Info

Publish Date
03 Nov 2017

Abstract

This study aims to identify the influences between clearance and punch velocity on the part edge quality of blanked parts. Experiments have been conducted using material copper, punch-die clearance and punch velocity variations. In order to determine the reachable punch-die clearance and punch velocity required for blanking. The quality of the part-edge characteristics shows that higher punch velocity and decreases clearance value can improve the part-edge quality, resulting in smaller burr height and rollover, and a larger shear zone. Furthermore, it could be observed that the part-edge quality improvement when blanking with high punch velocity is much more distinct for stele than for copper. According to blanking theory, this improvement was expected because copper have much higher heat conduction coefficients. Therefore, the heat dissipates faster and the desired stress relief effect does not take place to the same degree as for stele.

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Journal Info
Journal of Mechanical Engineering Science and Technology
Website

Abbrev

jmest

Publisher

Universitas Negeri Malang

Subject

Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Description

Journal of Mechanical Engineering Science and Technology (JMEST) is a peer reviewed, open access journal that publishes original research articles and review articles in all areas of Mechanical Engineering and Basic ...