A hydraulic leveling system suitable for large, medium and small presses
A press and hydraulic technology, applied in the direction of presses, manufacturing tools, etc., to achieve the effect of pressing product quality, simple operation, and overcoming poor pressing accuracy
Inactive Publication Date: 2011-12-14
大连船舶重工集团装备制造有限公司
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Problems solved by technology
[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a method that can effectively adjust the profiling accuracy caused by the deflection of the slider due to the torque generated by the unbalanced force on the slider and the mold during the pressing down of the slider. Hydraulic leveling system suitable for large, medium and small presses with poor problems
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[0010] A hydraulic leveling system suitable for large, medium and small presses. The press forms a closed-loop control system through the displacement sensor and the flow control valve group of the return cylinder; the flow control valve group of the return cylinder 2 adopts the speed control valve 5 and the servo valve 4 Realize the return cylinder down speed V 1 , V 2 , V 3 Control, the servo valve 4 is used to compensate the control error of the speed regulating valve 5; the main working cylinder is connected to adjust the output pressure of the compressor through the pressure control of the main working cylinder; 1 , V 2 , V 3 The adjustment realizes the parallel movement of the slider 1 relative to the worktable 3 .
[0011] figure 2 In the hydraulic schematic diagram of the downward speed adjustment of the return cylinder of the press shown, the basic principle is that the oil supply pipelines of each main cylinder are connected, and the output pressure of the comp...
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A hydraulic leveling system suitable for large, medium and small presses, belonging to the technical field of press hydraulic leveling, the press forms a closed-loop control system through a displacement sensor and a return cylinder flow control valve group; the return cylinder flow control valve group adopts The speed control valve and the servo valve realize the speed control of the return cylinder, and the servo valve is used to compensate the control error of the speed control valve; the main working cylinder is connected, and the output pressure of the compressor is adjusted through the pressure control of the main working cylinder; The slider moves parallel to the worktable. The technical scheme of the invention breaks the traditional technical principle, and realizes the parallel movement of the slider relative to the worktable by adjusting the downward speed of the return cylinder. This technology is simple in operation and precise in control, and overcomes the problem of poor molding accuracy caused by the deflection of the slider relative to the worktable during the downward pressing process of the slider of the existing press, so that the quality of the pressed product can meet the requirements.
Description
technical field [0001] The invention relates to a hydraulic leveling system suitable for large, medium and small presses, and belongs to the technical field of press hydraulic leveling. Background technique [0002] The 8,000-ton hydraulic press is mainly used to suppress the AP1000 steel containment head flaps of nuclear power plants. In the process of pressing the steel containment head flaps, only when the slider moves in parallel with the work table when it is pressed down can it meet the technological requirements. Guarantee the precision of the compression molding of the head flaps. The traditional press leveling technology has been unable to meet the accuracy requirements of nuclear power products. Contents of the invention [0003] In view of the defects in the prior art, the purpose of the present invention is to provide a method that can effectively adjust the profiling accuracy caused by the deflection of the slider due to the torque generated by the unbalanced...
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IPC IPC(8): B30B15/16
Inventor 周盛
Owner 大连船舶重工集团装备制造有限公司