Designing of an electromagnetic driver for the reversing valve of CNC die forging hammer. (January 2018)

• Record Type: Journal Article
• Authors: Zhu, Muzhi; Liang, Jintao; Zhao, Shengdun
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 232:Number 2(2018)
• Page Start: 358
• Page End: 368
• Publication Date: 2018-01
• Subjects: Forging hammer -- hydraulic reversing valve -- electromagnetic direct driving -- finite element analysis -- topology optimization; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/0954406216679437
• Languages: English
• ISSNs: 0954-4062

Abstract

This paper is aimed at the solution of the driving actuator of the reversing valve, which is the core component of CNC die forging hammer. The proposed electromagnetic drive method contributes to a precise control of the valve spool position and eliminates the transmission mechanism and hydraulic circuits. The complete structure and the topology structure of the electromagnetic part are designed to guarantee its high controllability and robustness. The structure parameters of the electromagnetic part are calculated based on the driving requirement of the reversing valve. With the finite element analysis of the direct driving part, saturation phenomenon of the magnetic circuit is eliminated and optimization of the output force ripple is performed. The output force of the electromagnetic part is simulated to reach 1000 N with a rated speed of 0.55 m/s, which satisfies the drive demand of the reversing valve spool and the ripple amplitude of the output force is reduced by 43.9%. The operational test of the electromagnetic direct drive component is conducted to verify the finite element method simulation method and shows an expected performance.