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access icon openaccess Design and control of load simulator for throttling system of large hydraulic press

  • Author(s): Le Zeng 1, 3 ; Jun Yang 2 ; Jianping Tan 1 ; Zhiyong Xiao 1
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  • Source: Volume 2019, Issue 13, January 2019, p. 358 – 361
    DOI:  10.1049/joe.2018.9015 , Online ISSN 2051-3305
This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 03/10/2018, Accepted 12/10/2018, Published 22/10/2018

In order to improve the precision of the extrusion speed control of the large hydraulic press and improve the quality of the extruding work piece, an experimental system was designed to simulate the throttle system of the hydraulic press. In order to simulate the transient heavy load and the fluctuating load characteristics of the throttle system, two pumps were used to supply the oil in the two chambers of the load cylinder separately, and the pressure of the two cavity of the load cylinder is controlled by two proportional relief valves. The force of the throttle spool driving cylinder can be controlled by controlling the pressure of the two chambers in closed loop, and the load state can be quickly changed. Experiments show that the load simulator can simulate the load form of the hydraulic press very well.

Inspec keywords: pressing; pumps; pressure control; extrusion; load regulation; quality control; valves; shapes (structures); design engineering; hydraulic drives; velocity control; closed loop systems

Other keywords: cavity pressure control; pumps; load cylinder; proportional relief valves; transient heavy load; precision engineering; throttle system; fluctuating load characteristics; throttle spool driving cylinder force; closed loop chamber; extruding work piece quality; transient heavy load simulation; oil supply; hydraulic press; design process; load simulator; extrusion speed control

Subjects: Mechanical components; Hydraulic and pneumatic control equipment; General shapes and structures; Fluid mechanics and aerodynamics (mechanical engineering); Control technology and theory (production); Control applications in manufacturing processes; Forming processes; Mechanical drives and transmissions; Inspection and quality control; Control of electric power systems; Pressure and vacuum control; Production equipment; Velocity, acceleration and rotation control

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