Problems to be considered in the hydraulic cylinder of the hydraulic press
11 Jan 2022
(1) Ensure the speed of the reciprocating motion of the hydraulic cylinder of the hydraulic press and the traction required for the stroke. (2) The external dimensions of the hydraulic cylinder should be reduced as much as possible to make the structure compact. (3) It is better that the piston rod is not under tension to avoid bending deformation. (4) Ensure that each part has sufficient strength, rigidity and durability. (5) Try to avoid side load on the hydraulic cylinder. (6) When the piston rod of the long-stroke hydraulic cylinder is extended, sagging should be avoided as much as possible. (7) The deflection between the piston, piston rod and guide rail can be eliminated. (8) According to the working conditions and specific conditions of the hydraulic cylinder, consider buffering, exhaust and dust-proof measures. (9) There must be possible sealing to prevent leakage. (10) The hydraulic cylinder cannot be flexed due to the limitation of temperature changes. Especially long hydraul...
Classification of hydraulic equipment
04 Jan 2022
The purpose of classifying hydraulic press equipment is to help people clarify their differences, so as to distinguish between different situations in the process of fault analysis, and to adopt the most appropriate methods and methods to achieve more ideal work results. Here, hydraulic equipment is classified from different perspectives. (1) According to the control method classification. According to the control method, hydraulic press equipment can be divided into three categories: electric control, machine control and manual control. Electronically controlled hydraulic press equipment uses electromagnets to manipulate the relevant reversing valve to achieve its control purpose. This is the main hydraulic press equipment. Electronically controlled hydraulic presses mostly use standard hydraulic components, which are more convenient for assembly and disassembly, and for storage of spare parts, which is more beneficial to failure analysis. The inconvenience is that the composition of ...
Classification and principle of hydraulic press
29 Dec 2021
The hydraulic press is composed of the main engine and the control mechanism. The main part of the hydraulic press includes the body, the main cylinder, the ejector cylinder and the liquid filling device. The power mechanism is composed of an oil tank, a high-pressure pump, a low-pressure control system, an electric motor, and various pressure valves and directional valves. Under the control of the electric device, the power mechanism realizes the conversion, adjustment and delivery of energy through pumps, cylinders and various hydraulic valves to complete the cycle of various technological actions. Classification of hydraulic presses: There are many types of machinery that utilizes hydraulic pressure transmission made by Pascal's law. Of course, the uses are also diverse according to needs. For example, according to the type of liquid that transmits pressure, there are two major categories: hydraulic press and hydraulic press. The total pressure generated by the hydraulic press is re...
Online monitoring of hydraulic press equipment
22 Dec 2021
The hydraulic cylinder is an executive element in the hydraulic equipment system. It is an energy conversion device that converts the pressure energy of the liquid into mechanical energy to achieve reciprocating motion. The hydraulic cylinder uses a simple and reliable structure to efficiently realize linear motion within a large thrust range, thereby significantly expanding the application range of hydraulic transmission. The stability and reliability of the hydraulic press equipment system has become a very prominent problem. In addition to the reliability design of the hydraulic system, the fault monitoring and diagnosis technology of the hydraulic system has attracted more and more attention and has become an important direction for the development of hydraulic technology. With the continuous development of modern large-scale production and the continuous progress of science and technology, in order to maximize production efficiency and hydraulic press quality, hydraulic press equi...
Daily inspection of hydraulic system of hydraulic press
15 Dec 2021
Before the hydraulic transmission system of a hydraulic press fails, there will often be some small abnormal phenomena. Through sufficient daily maintenance, maintenance and inspection in use, some possible faults can be found and eliminated as early as possible based on these abnormal phenomena, so as to achieve the greatest possible The purpose of reducing failures. The main content of the daily inspection is to check the status of the hydraulic pump before and after it is started and before it stops running. Daily inspections are usually carried out by relatively simple methods such as visual, auditory, and hand touch. (1) Visual inspection before work A large number of leaks are easy to detect, but a small amount of leaks at the tubing joints are often difficult to find. However, such a small amount of leakage is often a precursor to system failure. Therefore, the seal must be checked and cleaned frequently. The looseness of the upper hose joint is often a pre-exception symptom of ...
Classification of hydraulic press spindle system
08 Dec 2021
The main shaft system of the hydraulic press is divided into the main shaft system of the stepless variable speed hydraulic machine, the main shaft system of the continuously variable hydraulic machine and the main shaft system of the sectional continuously variable hydraulic machine according to the mode of speed change. The stepped variable speed hydraulic machine spindle system is mostly used in economical CNC hydraulic machine tools. At present, most CNC hydraulic machine tools use a continuously variable speed hydraulic machine spindle system and a segmented continuously variable hydraulic machine spindle system. 1. Main shaft system of step-variable hydraulic press The main shaft motor of the hydraulic press in the main shaft drive system of the step-variable hydraulic press is mostly an ordinary three-phase asynchronous motor, and the start and stop of the main shaft of the hydraulic press are controlled by an electric circuit. The speed control of the main shaft drive system of...