Large tonnage tuber composite hydraulic and control system
A technology of control system and hydraulic system, applied in the direction of hydraulic program control, jet program control, etc., can solve the problems of long delivery time, high price, restricting product development, etc., and achieve the effect of short delivery time and moderate cost
Inactive Publication Date: 2009-08-26
TIANSHUI METALFORMING MACHINE TOOL GROUP
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Problems solved by technology
Calculated according to the speed, the electro-hydraulic proportional valve of the oil cylinder of the large-tonnage bending machine has a large diameter. The output of this valve is small, the price is high, and the delivery time is long, which seriously restricts the delivery schedule of the product. For the case of super large flow requirements, At present, there is no hydraulic valve group that can meet this requirement, and the conventional electro-hydraulic proportional control method cannot be realized, which limits product development
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[0016] Below in conjunction with accompanying drawing, the utility model is described in further detail:
[0017] In the present invention, a set of small and medium diameter special electro-hydraulic proportional hydraulic systems are installed side by side on the two main cylinders 8 of the pipe making machine. The system consists of a proportional pressure valve group and two proportional direction valve groups 6 . The control system consists of a numerical control system 3, a man-machine communication interface 1, an external command input system 2, two proportional amplification boards 4, two slider position detection grating scales 5, and four proportional directional valve groups 6. Four groups of proportional directional valve groups 6 are respectively placed on the upper parts of the left and right oil cylinders 8 of the machine tool in two groups, and the moving parts of the two slider position detection grating rulers 5 are respectively arranged at the left and right...
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A compound hydraulic and control system for a large-tonnage pipe making machine, which is composed of a special electro-hydraulic proportional hydraulic system for small and medium diameters. A set of the above-mentioned special electro-hydraulic proportions for small and medium diameters are installed side by side on the two main cylinders of the pipe making machine. The hydraulic system consists of a proportional pressure valve group and two proportional directional valve groups. The internal comparison is carried out through the control system, and the output control signals respectively control two groups of electro-hydraulic proportional hydraulic valves. The invention replaces the large diameter electro-hydraulic proportional hydraulic system with the medium and small diameter electro-hydraulic proportional hydraulic system, which solves the disadvantages of high price and long delivery period of the large diameter electro-hydraulic proportional hydraulic system. This technology is also applicable to the use of a set of numerical control system to control multiple groups of electro-hydraulic proportional valve groups to realize the operation of the two-cylinder electro-hydraulic proportional synchronous control slider with super large diameter. This technology can also be applied to the hydraulic system of multi-cylinder hydraulic presses, which has the advantages of large flow, high-precision positioning, moderate cost, and short delivery time.
Description
technical field [0001] The invention relates to the hydraulic system technology of a large-tonnage double-cylinder pipe making machine and a multi-cylinder hydraulic machine, specifically a composite hydraulic pressure and control system for a large-tonnage pipe making machine Background technique [0002] The small and medium tonnage bending machine uses a set of special electro-hydraulic proportional hydraulic system, which consists of a proportional pressure valve group and two proportional directional valve groups. The two proportional directional valve groups are respectively arranged on the left and right oil cylinders. Under the control of a special CNC system, the precise control of the position and speed of the slider is realized. Large-tonnage bending machines usually use a set of large-diameter special electro-hydraulic proportional hydraulic system to achieve precise control of the position and speed of the slider under the control of a special numerical control ...
Claims
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IPC IPC(8): G05B19/46
Inventor 蒋文凯王亦东袁剑鸣万益全张怀德
Owner TIANSHUI METALFORMING MACHINE TOOL GROUP