Punch hydraulic system, the system is the main working characteristics of high-frequency, high-speed, high pressure. Hydraulic technology is one of the fastest growing technologies in machinery and equipment. Punch slider driven by the hydraulic cylinder for the hydraulic parts of the punching process, you can achieve rapid decline in the slider punching shear rapid decline to stop the work cycle. In recent years, stamping hydraulic press to improve the number of trips fast technology, to improve the work of the precision of the anti-bias technology to improve the working characteristics and reduce the work noise of the punching shock absorption technology to reduce the installation of energy-saving hybrid transmission technology and multi-pressure point synchronization And slider position and transmission of CNC technology advances so fast, the past hydraulic machine and mechanical presses in the shortcomings have almost disappeared. The traditional stamping equipment, in terms of technical performance, processing quality assurance and reliability and operating economy more and more not meet the modern automotive industry large-scale, high-volume automated production needs.
Hydraulic Punch adopts self-developed double-death cycle servo system control method, with high degree of humanization, full automation, intelligent and powerful hydraulic press, hydraulic technology and its impact on hydraulic technology as the key to achieve the basis of modern transmission and control technology First, it has become an indispensable important technical basis for industrial machinery, construction machinery and international advanced products. They are the key technologies to develop in the direction of automation, high precision, high efficiency, high speed, miniaturization and weight reduction. The industrialized countries all listed the hydraulic industry as a competitive industry, whose development speed is far higher than that of the machinery industry. Hydraulic components and controls have evolved into integrated hydraulic engineering. Machinery manufacturing is an industrial department that provides advanced technical equipment for various departments of the national economy and their own technological transformation. Casting, forging, welding, heat treatment, and cutting are important production methods for machinery manufacturing industry to get rough, shape products and enhance the mechanical properties of parts. Hydraulic technology is commonly used in many metal cold and hot processing machinery and equipment, of which presses and metals Cutting machine is the application of hydraulic technology earlier broader areas. In the car, milling, planing, grinding, drilling all types of hydraulic machine tools, the main hydraulic technology can be used in a wide range of stepless speed regulation, with good commutation and exchange performance, easy to achieve the advantages of work cycle, complete Workpiece and tool clamping, feed speed control and spindle drive operation, although modern CNC machine tools, machining centers and other advanced manufacturing equipment used in electric servo system, but the use of hydraulic transmission and control is still an important modern metal cutting machine tool automation.
In the forging machine, hydraulic machine, bending machine, shearing machine and other pressure processing equipment, the main use of hydraulic transmission force is larger, easy to adjust the pressure control and overload protection characteristics of the material, forming and other operations. Casting, forging, welding, heat treatment and other machinery and equipment production operations extremely harsh environment, high temperature, dust, humidity, corrosive gases, vibration and noise. Therefore require the machine to have good adaptability, reliability and maintainability. In molding and casting machines, welding machines, hardening machines and other casting, welding and heat treatment machinery and equipment, the main use of hydraulic technology to facilitate stepless speed regulation and long-distance remote control operations and other characteristics, modeling and casting transport and casting, high temperature parts Grasping and other operations to reduce the labor intensity of workers, to avoid and reduce heat radiation and harmful gases on the body and increase productivity.
Punch hydraulic system Punch the slider driven by the hydraulic cylinder for the hydraulic parts of the red shear processing, you can achieve rapid decline of the slider punching shear rapid decline to stop the work cycle. 1.2 The working principle of hydraulic transmission and its components Hydraulic transmission has many outstanding advantages, so its application is very wide, such as general industrial plastic processing machinery, pressure machinery, machine tools, etc .; walking machinery in the construction machinery, construction machinery, Agricultural machinery, automobiles, metallurgical machinery for the steel industry, lifting devices, roll adjusting devices, flood control gates and embankment devices for civil engineering, river bed elevators, bridge control mechanisms, etc., deck cranes for ships ), Bow doors, bulkhead valves, stern thrusters, etc .; giant antenna control devices for special technologies, buoys for measurement, ascent and descent rotation stages; artillery maneuvering devices for military industries, ship anti-roll devices, aircraft simulations, Gear retractable device and the rudder control device. 1.2.1 The working principle of hydraulic transmission The hydraulic system uses the hydraulic pump to convert the mechanical energy of the prime mover into the pressure energy of the liquid, which can transfer the energy through the change of the pressure energy of the liquid. After passing through various control valves and pipes, Components (hydraulic cylinders or motors) convert liquid pressure to mechanical energy to drive the working mechanism for linear reciprocating motion and slewing motion. The liquid is called working medium, usually mineral oil. Its function is similar to that of transmission components such as belt, chain and gear in mechanical transmission. 1.2.2 The composition of hydraulic transmission Hydraulic transmission system consists of the following five parts: (1) power components, that is, hydraulic pump, whose function is to convert the mechanical energy of the prime mover into liquid pressure kinetic energy (manifested as pressure, flow), which The role of hydraulic system is to provide pressure oil, the system is the dynamic (2) actuator, hydraulic cylinder or hydraulic motor, its function is to convert hydraulic energy to mechanical energy and external work, hydraulic cylinder can drive the work of institutions to achieve reciprocating linear motion ( Or swing), the hydraulic motor can complete the slewing motion. (3) control of regulating components, refers to the various valves These components can be used to control and adjust the hydraulic system of liquid pressure, flow and direction, in order to ensure that the implementation of the components can be expected in accordance with people's work (4) auxiliary components, including fuel tanks , Oil filters, pipes and fittings, coolers, pressure gauges and more. Their role is to provide the necessary conditions for the system to work properly and to facilitate monitoring and control. (5) working medium, that is, transmission fluid, usually hydraulic oil. Hydraulic system is through the working medium to achieve movement and power transmission, the other hydraulic components can also play a role in the hydraulic components of mutual lubrication.
The advantages of hydraulic transmission Smooth transmission In the hydraulic transmission, the hydraulic fluid compression is very small, under normal pressure can be considered incompressible, rely on the continuous flow of oil transmission. Oil shock absorption capacity, the hydraulic circuit can also be set in the buffer device, so unlike machinery and processing errors due to assembly and assembly will cause vibration buckle impact, the transmission is very smooth, easy to achieve frequent commutation; it is widely used Hydraulic transmission is used almost entirely on machines that require a smooth transmission. Small volume and light weight Hydraulic transmission Compared with mechanical, electric and other transmission modes, the volume and the mass can be reduced greatly when the output power is the same, so the inertia is small and the movement is sensitive. This has the advantages of hydraulic profiling, hydraulic automatic control and demand reduction Quality machines, is particularly important. For example, China's production of 1m excavators in the use of hydraulic transmission, than the use of mechanical transmission to reduce the quality of 1t. Large capacity hydraulic transmission easy to get a lot of force and torque, it is widely used in presses, tunnel boring machines, 10,000 tons of steamer and 10,000 tons hydraulic press and so on. Easy to implement stepless speed regulation In hydraulic transmission, the liquid flow can be adjusted to achieve stepless speed, and withered a wide range of up to 2000: 1, it is easy to get very low speed. Easy to implement overload protection Hydraulic system has taken a lot of safety measures to automatically prevent overload, to avoid accidents Hydraulic components can be automatically lubricated Hydraulic oil as the working medium, so that the hydraulic transmission can be automatically lubricated, so the components of the longer life . Easy to implement complex movements hydraulic transmission can be used to obtain a variety of complex mechanical actions, such as copying lathe hydraulic copying knife, CNC milling machine hydraulic table, can be processed irregular shaped parts. Simplify the mechanism Easy to implement in automated hydraulic systems where the pressure, flow and direction of the liquid are very easy to control, and complex electrical work is easily done with the aid of electrical devices cycle. At present, hydraulic drives are commonly used in combination machine tools and automatic lines.
Hydraulic Punch --- hydraulic shortcomings High precision hydraulic components manufacturing requirements of the components as high technical requirements and assembly more difficult to use more maintenance grid. Difficult to achieve the fixed transmission Hydraulic transmission is the hydraulic fluid as the working medium, the inevitable leakage between the relative motion of the surface, while the oil is not absolutely incompressible. Therefore, it should not be used in the transmission ratio demanding applications, such as thread and gear processing machine drive system. Hydraulic fluid temperature by the impact of the hydraulic fluid viscosity changes with temperature changes, it is not suitable for high temperature or low temperature environment. Not suitable for long-distance transmission of power due to the use of tubing to transfer pressure oil, pressure loss, it is not suitable for long-distance transmission of power. Oil mixed with air easily affect the work performance Oil mixed with air, easily lead to crawling, vibration and noise, the system's performance is affected. Failure is not easy to check and eliminate. 1.4 Hydraulic Analysis of the status quo at home and abroad Hydraulic transmission and pneumatic transmission known as fluid transmission is based on the 17th century Pascal proposed hydrostatic pressure transmission principle developed an emerging technology is widely used in industrial and agricultural production of a Door technology. Today, the level of fluid transmission technology has become an important indicator of the level of industrial development in a country. The first to use hydraulic principles was the 1795 British Joseph Braman (1749-1814), which used water as a working medium in London and applied it to industry in the form of hydraulic presses, resulting in the world's first hydraulic press .
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