A hydraulic leveling technology suitable for large, medium and small presses
A press and leveling technology, applied in the direction of presses, manufacturing tools, etc., to achieve precise control, satisfactory quality of pressed products, and simple operation
Active 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 technology suitable for large, medium and small presses with poor problems
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[0011] A hydraulic leveling technology suitable for large, medium and small presses. The press uses a displacement sensor and a return cylinder 2 pressure regulating valve group to form a closed-loop control system; the return cylinder 2 pressure regulating valve group uses an overflow valve 4 to realize the return cylinder 2 Pressure control, the flow in large-scale compressors is increased, the return cylinder 2 pressure regulating valve group is controlled by the throttle valve 5 and the overflow valve 4 in parallel; the main working cylinder is connected, and the flow control of the main working cylinder is used to adjust the slider 1 to move Speed; through the working pressure F of the return cylinder 1 , F 2 , F 3 The adjustment realizes the parallel movement of the slider 1 relative to the worktable 3.
[0012] figure 2 The hydraulic principle of a hydraulic leveling technology suitable for large, medium and small presses is shown as follows: the oil supply pipeline of eac...
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A hydraulic leveling technology 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 pressure adjustment valve group; the return cylinder pressure adjustment valve group adopts The overflow valve realizes the control of the pressure of the return cylinder, and the flow rate in the large-scale press is increased. The pressure adjustment valve group of the return cylinder adopts the parallel control of the throttle valve and the overflow valve; the main working cylinder is connected, and the slider is adjusted through the flow control of the main working cylinder Moving speed: the parallel movement of the slider relative to the worktable can be achieved by adjusting the pressure of the return cylinder. The technical scheme of the invention breaks the traditional technical principle, and realizes the parallel movement of the slider relative to the worktable through the adjustment of the working pressure 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 technology suitable for large, medium and small presses, and belongs to the technical field of press hydraulic leveling. Background technique [0002] The 8000-ton hydraulic press is mainly used for pressing the nuclear power AP1000 steel containment head flaps. In the process of pressing the steel containment head flaps, only when the slider moves in parallel with the working table when it is pressed down can the process requirements be met. Ensure the accuracy of the compression molding of the head flap. Traditional press leveling technology has been unable to meet the accuracy requirements of nuclear power products. Summary of the invention [0003] In view of the defects of the prior art, the purpose of the present invention is to provide a method that can effectively adjust the pressing accuracy caused by the imbalance of the force exerted by the slider and the mold during the pressing process of the slider...
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Inventor 周盛
Owner 大连船舶重工集团装备制造有限公司