Yuanhao Pull Bend: What is the maintenance method of pull bend?

Stamping bending is the stamping process of bending metal plates, pipes and profiles into a certain curvature, shape and size of the workpiece. Bending forming is widely used in the manufacture of high-pressure vessels, boiler drum, boiler furnace tube, hull steel plate and bone ribs, various utensils, instrumentation components and box and cabinet insert strips. So, how to maintain the pull bend? The following Ji'nan pull bend manufacturers for everyone to answer questions.

maintenance method of bending:

1. Perform control in strict accordance with operating procedures.

2. According to the lubrication chart, before each start, the lubrication chart is required to maintain the time, fixed point, and quantitative lubricating oil.

3. The river machine performs empty rotation to make the machine run smoothly. There must be no abnormal noise and hydraulic oil leakage.

4. The machine tool needs to check whether the electrical parts are normal and clean them regularly.

5. Daily operation must pay attention to the person who needs to stop the machine.

6. Oil and clean the machine tool, and then leave work every day to lubricate the guide rails.

Yuanhao stretch bending manufacturers said that specific machine maintenance methods need to be operated according to the machine. The specific maintenance method may refer to the advice given by the machine instruction and the specific operation of the owner to regularly maintain.

Precautions for the pull-bend operation:

1. The working pressure of the large arm cylinder is 15MPA. Usually, because the adjustment pressure is high and the oil temperature rises, it is adjusted. When you need to pull the material, it will temporarily increase a little and return to less than 10MPA immediately after pulling.

2. Focus on observing the components of the equipment when in power, whether there are abnormal phenomena, whether the sound is normal, whether the pressure gauge pointer indicates flexibility, strictly prevent abnormal phenomena, and listen to the command of the chip personnel to start and stop the equipment at any time.

3. The working pressure of the stretching cylinder is 15MPa. When working, the pressure factor is estimated according to the size of the contour. Estimate the required pressure. After adjusting the pressure of the overflow valve, you can start to pull the bend.

4. During the bending process, adjust the speed of the large arm cylinder as needed, and then use the throttle valve to adjust. When the speed of the two arms is different, the throttle valve is synchronized by adjustment.

5. In the work, the operator controls the horizontal movement of the pinch and stands on the back of the chip to prevent the type of material damage and wounds, and observe any phenomena of deformation, cracks, depression and other phenomena in any case at any time.

6. According to the length of the contour, adjust the position of the tension cylinder reasonably so that the cylinder will not be extended too long.

7. Change the splint according to the size of the contour, and strictly prohibit the motor when loading and unloading the splint.

How to solve the problem of rebound in the process of pulling bending?

1. Reasonably determine the process parameters in the pull bending process.

2. Accurately predict the rebound of bent parts. Sometimes, it is necessary to pre-stretch, bend and heat treat, and finally form after forming. In actual production, the correction quantity and process parameters of the bending model are mainly solved by actual experience or trial and error method, that is, the correction modulus is repeatedly adjusted according to experience, and the main tension pressure is changed and the pressure is supplemented. This method is expensive, time-consuming, and difficult to guarantee the accuracy of the shape. When the bending machine is handled rationally, the contours in related applications are widely used in the aviation and automotive industries due to its good mechanical properties. The rebound after pulling the bend is still too small, so it still needs to be calibrated after pulling. In the production process of pulling parts, the shape of the stretching model is designed according to the shape of the stretching part. The control of contour pullback is one of the main problems that needs to be solved by bending of the contour.

3. Yuanhao stretch bending manufacturers said that the development of curve bending refers to the bending process formed by pre-extending the surrender limit of the material while maintaining a certain axial tensile force to enter the mold groove. When bending, apply axial tension to overcome internal wrinkles, improve cross-sectional stress distribution, reduce backlash 4, and improve shape accuracy. Even if the residual residue allows to increase the axial tension as much as possible, because the relative bending radius of the profile parts is large, there is still a certain amount of rebound.

4. The fence plant uses aluminum contour as the skeleton, which is more ideal for the skeleton made of this metal material. Its cost is not higher than that of wooden keel and high density board, but it can ensure engineering ethics. When the aluminum plastic panel gel is sewn neatly: when the aluminum panel decorates the surface of the building, there is a certain crack width between the board and the board. For beauty, personally apply black sealant to fill cracks. Because the protective film was torn by the protective film when cutting the aluminum plastic panel, the substitute did not organize the protective tape neatly.

5. In the entire construction industry, the application of contour bending is also very common, but further improvement of technology is needed to solve the problems in the bending process. During the operation, there will also be some technical problems, namely bending factories, which will be solved by the manufacturer in time.