Hydraulic system and control method of heavy-duty forging equipment with controllable feed speed

Abstract

The invention relates to a heavy-load forging and pressing equipment hydraulic system with controllable feeding speed, and a control method. The heavy-load forging and pressing equipment hydraulic system comprises a sliding block, a displacement sensor, a double-acting fast feeding cylinder, a fast feeding hydraulic oil way, a single-acting working-feeding cylinder, a working-feeding hydraulic oil way, a human-computer interface and an industrial personal computer. The fast feeding hydraulic oil way and the working-feeding hydraulic oil way each comprise an oil source, a one-way cartridge valve set, a direction control cartridge valve set, a servo proportional valve, a pressure cartridge valve set, an oil pressure sensor and an energy accumulator. The working-feeding hydraulic oil way further comprises a liquid charging valve set. The industrial personal computer is connected with the human-computer interface, the one-way cartridge valve set, the pressure cartridge valve set, the oil pressure sensor, the direction control cartridge valve set, the servo proportional valve, the liquid charging valve set and the displacement sensor. According to the heavy-load forging and pressing equipment hydraulic system with the controllable feeding speed, and the control method, production efficiency is improved, the needs for flow are relatively small, machining requirements of various forge pieces with large sizes and complex shape sizes can be met, energy is saved, efficiency is improved, and high precision of motion of forging and pressing equipment is ensured.

Description

technical field [0001] The invention belongs to the field of forging, and in particular relates to a hydraulic system and a control method of heavy-duty forging equipment with controllable feed speed. technical background [0002] The use of impact force or pressure to deform metal between anvils or forging dies to obtain forgings of desired shape and size is called forging. The forging press is a special equipment for forging and forming. Among them, the forging hydraulic press has multiple functions such as fast forging, general forging, slow drop, and pressure holding. It is a high-performance pressure forging equipment for various forging process requirements. my country's forging industry has nearly 3,000 forging hydraulic presses of different tonnages such as 800-18500T. It has an international advanced level in forging capacity, but there is a large gap between the forging frequency and the international level, especially for heavy-duty forging equipment. The rapid f...

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Problems solved by technology

my country's forging industry has nearly 3,000 forging hydraulic presses of different tonnages such as 800-18500T. It has an international advanced level in forging capacity, but there is a large gap between the forging frequency and the international level, especially for heavy-duty forging equipment. The rapid forging frequency of domestic forging hydraulic presses is generally 45 times / min, while that of foreign forging hydraulic presses is generally 90 times / min, and domestic hydraulic forging machines vibrate a lot under fast forging conditions, which is practical bad sex

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