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During the operation of the straightening machine, the workpiece needs to be placed in the positioning support position on the working table of the automatic straightening machine, and after pressing the automatic start button, the straightening machine will enter the automatic straightening cycle process: first, the cylinder performs a linear motion action to drive both sides to move backward and forward (if the workpiece is positioned by the outer circle, the cylinder performs a linear motion action to drive the two drive wheels to descend), clamping and positioning the workpiece to measure the benchmark; at the same time, the servo speed regulating motor drives the reducer to reverse and drives the workpiece and the pulse encoder to rotate.  The touch-type measuring device of the straightening machine detects the surface runout of the measured points on the workpiece (TIR value), and the data detected by the differential transformer type displacement sensor is transmitted together with the phase data collected by the pulse encoder to the computer data collection system. The computer, based on the bending condition of the workpiece and the detected data, processes the measurement data through the control system and gives the control parameters for straightening correction. Then, the PLC controls the servo speed motor to drive in reverse (or the conflict wheel) so that the large bending points of the workpiece are vertically upward. The hydraulic cylinder performs linear motion to drive the press head to press down the workpiece, completing one straightening cycle.  The programmable control center of the straightening machine is a key component of the straightening machine. All the complex and orderly movements of the straightening machine are carried out under the control of its program. The PLC and the computer processing system communicate with each other and coordinate to control the orderly execution of actions such as clamping, measurement, selection of the straightening area, pressure application for correction, etc.  The straightening machine is a specialized equipment for straightening steel bars. Compared with other straightening machines, although their functions are different, the equipment and debugging procedures are basically the same. Before preparing the equipment, it is necessary to be thorough; during operation, it is important to be cautious; and after the operation, it is necessary to pay attention to the debugging.  Before installing the straightening machine equipment, it is necessary to check whether all the components of the entire machine are complete and whether their respective positions are reliable. If the bar straightening machine is placed against a wall or other building equipment, there should be some clearance left to facilitate the later maintenance and repair of the equipment, as well as to facilitate the transportation of materials.

By adopting the straightening and flattening process, the high-strength steel finishing processing that traditionally required the use of cross-cutting machines and flattening machines can now be completed in one step. Moreover, the processing speed for products under 6mm can be increased from the traditional flattening process's 100-150m/min to 200-300m/min.      The consumption of the rolling rolls has been significantly reduced.      Considering the characteristics of hot-rolled products, special-designed working rolls were adopted, which increased the roller changing cycle from the traditional hot-rolled flat rolling process's 700 tons per time to 2100 tons per time - 2800 tons per time, significantly reducing the consumption of rollers.      Increased level of automation      Non-contact plate shape detection instruments are installed at the machine inlet to detect the plate shape of the raw materials. Based on the plate shape of the raw materials, the extension rates of the straightening machine and the finishing machine are allocated through a secondary model, and the press-down parameters of the straightening machine are pre-set. This improves the automation level of the machine group and the stability of product quality, and reduces the reliance on the experience of operators.      Improved the rigidity of the leveling machine      The stiffness of the leveling machine was adjusted, reducing the usage value of the bending force for high-strength steel production and minimizing the consumption of the roller bearings.

During the normal operation of the machinery and equipment, there are two different types of damage that can occur. One is normal damage; the other is abnormal damage. Therefore, it is normal for the straightening machine to experience damage during operation, as it is used for a relatively long period of time. The straightening machine often undergoes wear and aging, which are all considered normal damages. However, when the straightening machine is in production, if its quality does not meet the standards and requirements, then the designed precision and smoothness cannot meet the requirements either. The corresponding physical and mechanical properties of the material, as well as heat treatment, cannot be well met the requirements. As a result, there will be a serious asymmetry in concentricity.  The aforementioned issues all pertain to abnormal damage of the straightening machine. During the disassembly, assembly and transportation of the straightening machine, if the operation is not carried out properly, it will cause the components to deform or result in severe damage to their surfaces. In more serious cases, it can even directly lead to the rupture of the equipment.

I wonder how much everyone knows about the CNC hydraulic straightening machine. This article will mainly introduce the main system composition of this equipment to you. From the application perspective, currently we mainly use this equipment to complete the drawing and straightening of wire materials such as copper wires. The electrical transmission part of the CNC hydraulic straightening machine mainly includes stretching motors, winding motors, and line-discharging motors, etc.      In addition, the CNC hydraulic straightening machine equipment also includes some other auxiliary components. These mainly include tension frames, positioning wheels, dividing wheels, and reciprocating line-pulling rods, etc. The stretching motor is mainly used to drive the stretching wheels to rotate. Under the action of the belt, the four-stage stretching wheels can achieve metal stretching, while the reeling motor can complete the winding process.      So, what exactly is the composition of the hydraulic straightening machine system? First of all, the stretch motor used in this equipment employs a frequency converter, while the winding motor uses a special frequency converter for winding. This ensures the stable and reliable operation of the system. Secondly, in actual operation, the running instructions and output frequency signals of the main unit belong to running instructions and frequency instructions, thereby achieving synchronous operation.      After the production process is completed, when it is time to shut down the hydraulic straightening machine, if the overall weight is relatively heavy, then reverse braking should be adopted. This can prevent line breakage due to inertia. Moreover, during the threading operation, this equipment also has a point motion function.      After that, during the operation of the hydraulic straightening machine, it mainly relies on the voltage signal output by the swing rod as a reference to conduct internal variable correction control. Additionally, with the assistance of the frequency converter, this equipment can predict the running speed of the graph during the winding process, thereby ensuring that the winding is carried out at a constant speed and meeting the process requirements.

【I. Problems in the Application of Pipe Straightening Machines and Requirements for Gear Hardness】  The pipe straightening machine in the straightening machine is a common type of straightening machine. Therefore, the research on this type of straightening machine will continue below, as this is also its basic requirement. Therefore, a thorough understanding of this purpose is necessary and inevitable.  Can the pipe straightener be used to straighten seamless steel pipes?  In this situation, the manufacturer of the straightening machine has every possibility to do so. Moreover, its operation is very simple. Just place the seamless steel pipe into the straightening machine and follow the correct procedures to operate it, and you will achieve excellent straightening results.  2. Should the components of the pipe straightening machine be checked first regarding their operation and usage? ？   During the operation and use of the straightening machine, it is necessary to conduct a preliminary inspection of some important key components of the machine. This is also essential. Its main components are the transmission mechanism, the working device, and the clearance of the equipment. These components are very important and cannot be omitted.  3. Can the pipe straightener be used to straighten welded pipes? What hardness should the gears of the steel pipe straightening machine reach?  The welded pipes can be straightened using a pipe straightening machine, which is perfectly fine. The material of the gears in the pipe straightening machine is generally 35CrMo, with a hardness of 255-286.  Thick-walled barrel. If it fails to meet the hardness requirements, it cannot be used.  All of the above can be regarded as the basic knowledge of the pipe straightening machine and are essential. Otherwise, it would be impossible to fully understand and comprehend the products on this website, and thus it would be impossible to achieve the expected goals and requirements. Moreover, it is not conducive to the learning process of the product, so it should not be treated carelessly.  【II. How to Straighten Steel Pipe Straightening Machines and Some Operating Supplements】  I believe that everyone is quite familiar with the steel tube straightening machine in the rolling machine. However, up to now, there are still many deficiencies and shortcomings in their learning level. Therefore, the following will introduce the content of the article through some specific issues, and expand the explanation of related knowledge to supplement and enhance our understanding of this product.  1. In the straightening machine, are the plate straightening machine and the pipe straightening machine the same in terms of the straightening principle? Additionally, what should be added in the operation of the pipe straightening machine?  The plate straightening machine and the pipe straightening machine in the straightening machine are the same in their straightening principle and there is no difference, because they both fall under the category of straightening machines.  Regarding the straightening operation of the pipe straightening machine, the following additional information is required:  On this straightening machine, no items or tools of any kind should be placed, to prevent them from falling into the machine and damaging it.  (2) The material racks and troughs in the pipe straightening machine should be installed straight. Additionally, they also need to be aligned along the center line of the straightening machine.  (3) The straightening speed of the pipeline straightening machine should be strictly controlled, and an appropriate straightening speed should be determined based on the material characteristics, etc. Moreover, for the operators, during their work, they must not take any dangerous actions to avoid risks or accidents.  2. How does the pipe straightening machine achieve the straightening process?  In short, the straightening process of the pipe straightening machine occurs as the pipe rotates and moves forward when it enters the machine. It achieves the straightening effect through repeated deformation.  From the above description, we can know that the upper and lower frames of the pipe straightening machine are usually welded components, which facilitate observation and adjustment. The straightening rollers are placed on the roller seats and then fixed with screws. Therefore, by changing the diameter of the straightening pipe, the angle of the rollers can be adjusted, thus meeting the straightening requirements.

When using the straightening machine, several related issues should be noted. Specifically, the position of the rollers should form an angle relative to the movement direction of the straightening machine. Two or three rollers are actively generating pressure, which is driven to rotate in the same direction by a motor. On the other side, several small rollers are subjected to the pressure from the driven rollers. The straightening machine rotates by the friction of the rotating rods or pipes, achieving the required compression and straightening of the workpiece with the roller pairs, and the small rollers can be adjusted forward or backward separately.      Generally, the more rollers there are in the straightening machine, the higher the precision of the finished product after straightening. Once the product is caught by the rollers, the straightening machine will move continuously in a straight line or in a rotating manner to achieve the purpose of straightening. Before starting the straightening machine, check the hydraulic system and gearbox of the hydraulic station. If the gear oil in the gearbox is full, perform corner checks and adjust the working pressure of the hydraulic system before starting the main engine. Inject lubricating oil at each lubrication point to verify the operation of the mechanical transmission components for flexible operation.      When the straightening machine stops, the straightening rollers will also cease operation. The upper straightening roller will rise and the straightened steel pipes will be sent out. If reverse straightening is needed, the console's backspace knob can be used to reverse the main unit and the straightening process. The main motor stops and the straightening rollers stop. The steel pipes return to the starting position and the next straightening procedure is repeated. When the straightening machine is turned off, the main power supply is cut off simultaneously. Thus, the program controller cannot be changed at will.      In actual operation, one should carefully observe the straightness of the steel pipe. When performing the initial setting, ensure that the steel pipe is in contact with three-quarters of the roller correction body, and this gap should not be less than the speed of straightening. The greater the speed of straightening, the more it is necessary to adjust reasonably according to the degree of bending of the steel pipe and the material of the pipe to be straightened. The distance between the upper and lower rollers is adjusted based on the material of the steel pipe and the required accuracy for reducing the straightening.

In the processing of many materials, equipment such as straightening machines are often used. Through bending, twisting, wave shaping, and straightening, the steel straightening process is completed. The most common defects in the steel straightening process are solved by taking the following corresponding measures in actual production. The wave curves are divided into two types: the waist wave of steel profiles and the leg wave. The main reason is that the diameters of the adjacent straightening rolls are too different.      The processing of hole type straightening is not precise. The roller straightening is not round or the assembly space is too large. The straightening rollers rebound during rotation. The pressure distribution of the upper roller system is unreasonable. The commonly used measure is to verify the use of straightening rollers, confirm the deviation of the diameter of each roller, adjust the position of the straightening rollers or directly replace the rollers that do not meet the requirements, and introduce a higher pressure roller. The main cause of leg waves is the significant misalignment between the straightening machine type and the axial turbulence. The general measure taken is to re-adjust and calibrate the straightening rollers and inspect the equipment to meet the process specifications, in order to eliminate the axial turbulence.      The main reasons for the straightening process are that the upper roll system has a small pressure distribution and the straightening die profile is inaccurate. In this sense, the measures adopted are suitable for increasing the pressure value of the upper rolls and observing the alignment of the upper and lower roll systems to avoid misalignment. This is further divided into vertical bending. Depending on the need, materials exceeding this range are defective. After long-term production practice, the main reason for the bending of the steel after straightening is the insufficient pressure distribution and too small pressure distribution of the upper and lower rolls, which do not exceed the performance limit of the steel itself. Therefore, the steel remains in its original curve after straightening.      To some extent, the corresponding measures for adjusting the pressure distribution ratio of the five upper rollers are to increase the straightening force of the straightening machine. The reason for this is that the left and right bending of the steel and the misalignment during the straightening of the main holes, and steps are taken to adjust the shape of the upper and lower rollers in the hole system. Straightening is a process that corrects the situation where the surface quality of the finished steel is不合格， thus achieving a correct improvement.

Each type of straightening machine consists of many different components or structural combinations. The pneumatic unit of the straightening machine refers to the pneumatic control circuit formed by integrating the actuating cylinder, pressure relay, manifold valve, and pneumatic triplex unit together.      What are the requirements for the pneumatic components of the straightening machine? To ensure the quality of the series of straightening machines, our pneumatic components are all sourced from well-known domestic and foreign manufacturers such as FESTO from Germany, SMC from Japan, and SHAKO from Taiwan, etc. This ensures that our machines operate more reliably, flexibly, and have a long service life.      What is the function of the pneumatic unit of the straightening machine? The pneumatic unit is a very important part of the machine, mainly used to control and execute the positioning, sorting, clamping, transportation, etc. of the workpiece. On each actuating cylinder, there are detection switches for feedback to reflect the current operation status of the machine, enabling operators to better control the operation process and facilitating the maintenance and troubleshooting of the machine.

Improper transportation and storage of the straightening machine       (1) The manufacturing (or repair) quality fails to meet the design specifications. The dimensions and shapes after manufacturing or repair do not reach the design accuracy and smoothness. The physical and mechanical properties of the materials and the heat treatment do not comply with the requirements; during assembly, the required fits and concentricity are not guaranteed, etc.      (2) Improper transportation and storage of the straightening machine      Improper transportation and handling can cause parts to deform, roughen the smooth surface, and in severe cases, even lead to rupture. Such as the rupture of cylinder heads and cylinder blocks, the pressurization of cylinder liners into an elliptical shape, and the surface damage of crankshaft necks, etc. Improper storage can also cause serious damage to parts and components.      If the crankshaft is stored in a horizontal position or is piled up on top of each other, it will bend. If the cylinder liners are stacked horizontally, they will become elliptical. If smooth surfaces such as the journal is not lubricated when stored, it will cause oxidation and rusting. Electrical equipment will lose its insulation performance when damp, and is prone to burning out. Rubber parts will age and crack if stored improperly.      The straightening machine and the straightening tool violated the operating procedures. The operation was improper or they were not maintained in time. For instance, if the cleaning of the air filter and the engine oil was insufficient, it would cause severe wear and tear of the machinery; starting at high speed in low temperatures without reaching the required engine oil pressure and water temperature before operating at full load often leads to serious damage.