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Technical Briefs

Optimal Design of a Hybrid-Driven Servo Press and Experimental Verification

[+] Author and Article Information
Pei-Lum Tso

Department of Power Mechanical Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan

J. Mech. Des 132(3), 034503 (Mar 03, 2010) (4 pages) doi:10.1115/1.4000213 History: Received October 13, 2008; Revised August 18, 2009; Published March 03, 2010; Online March 03, 2010

This paper focuses on a hybrid-driven servo press, which uses not only a servomotor but also a regular ac motor with a flywheel. A PC-based control system is developed based on both feedback and iterative learning control theories on a prototype. The stamping performance, improved forming ability, and energy saving merits have been verified by the experiment. The results show that the advantages of the hybrid-driven servo press have been validated, such as its energy saving features, flexible punch speeds, and adjustable strokes, for any kind of stamping operations.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Hybrid-driven servo press mechanism with a seven-bar linkage

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Figure 2

Precision points of the press mechanism

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Figure 3

Solution space of a servo press mechanism

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Figure 4

The ram travel domain

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Figure 5

Servomotor motions

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Figure 6

Scheme of the hybrid-driven servo press and ram position measurement system in stamping

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Figure 7

Ram motion curves at BDC

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Figure 8

Setup for drawing simulation and experiment

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Figure 9

Drawing speed and limiting drawing depth

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Figure 10

Ram motion curve

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