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A hydraulic control system for high-speed CNC punch press based on 2d high-frequency digital valve

A technology of hydraulic control system and CNC punching machine, which is applied in the direction of fluid pressure actuators, servo motors, mechanical equipment, etc., can solve the problems of high cost, weakening the market share of imported products, etc., and achieve the effect of controllable output force of the oil cylinder

Inactive Publication Date: 2017-06-09
史树元
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the hydraulic control system of high-speed CNC presses in my country mainly relies on foreign imports, and the cost is high. Therefore, it is urgent to develop high-tech domestic high-speed CNC hydraulic devices to form real competition with imported products and weaken the market share of imported products.

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  • A hydraulic control system for high-speed CNC punch press based on 2d high-frequency digital valve

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments.

[0013] Such as figure 1 , considering that the punch press has a large load and a low speed when it is working and feeding, but it has a small load and a high speed when it is fast forwarding and rewinding. Considering energy saving and heat reduction, the pump source system should use high and low pressure. Double pump oil supply. In addition, in order to adjust the speed of fast forward and fast reverse to a greater extent to realize fast stamping, and also to reduce the diameter of the cylinder piston, the hydraulic system adopts a differential connection controlled by a hydraulic valve. In addition, an accumulator is used to store energy in the oil inlet circuit to compensate the flow rate when the oil cylinder goes down quickly. Considering that reversing and mechanical shocks will cause pressure peaks and noises in the pipeline, an accumulator is used in the oil...

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Abstract

A hydraulic control system for high-speed CNC presses based on 2D high-frequency digital valves. It uses differential connections controlled by hydraulic valves. In addition, an accumulator is used to store energy in the oil inlet circuit to compensate the flow rate of the cylinder when it goes down quickly. Considering that reversing and mechanical shocks will cause pressure peaks and noises in the pipeline, an accumulator is used in the oil return circuit to absorb these shocks, so as to achieve reversing, stable operation and reduce noise. The system has the controllable output force of the oil cylinder, and the displacement of the punch in the effective stroke of the oil cylinder can be adjusted arbitrarily to realize the function of stepless controllability.

Description

technical field [0001] The invention relates to a hydraulic control system of a high-speed numerical control punching machine based on a 2D high-frequency digital valve, which is suitable for the mechanical field. Background technique [0002] CNC punching machine is a cutting-edge product integrating machine, electricity and hydraulics. It is widely used in the processing of various metal sheet parts. It is a key equipment for sheet metal processing that can automatically complete a variety of complex hole patterns and shallow drawing at one time. The market demand is large. The total annual demand in my country is 3,000-5,000 sets, and it is estimated that it will maintain a rapid growth trend for many years. However, my country's imported CNC sheet metal processing equipment occupies a dominant position in the market, and the high-end products of domestic brands are almost zero, while the low-end products are almost zero. End products account for about 20%. [0003] At pr...

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Application Information

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IPC IPC(8): F15B1/02F15B11/00
Inventor 史树元
Owner 史树元