Steel Bending Machine

We are a professional bending machine manufacturer with over 10 years of industry experience. Today, we would like to introduce to you how to select a bending machine:

As a key equipment for sheet metal processing, the precision of the bending machine directly affects the quality of the final product. Precision control is not only related to the accuracy of product dimensions, but also affects the processing efficiency and material utilization. The modern manufacturing industry is increasingly demanding the accuracy of products, which makes the bending machine precision control has become an important part of the production process. A good precision bending machine can ensure the consistency of product dimensions in mass production, reduce the subsequent trimming process, reduce the scrap rate.

Influence of mechanical structure on accuracy

The mechanical structure of the bending machine is the basic factor affecting accuracy. Insufficient rigidity of the frame will lead to elastic deformation when subjected to force, directly affecting the consistency of the bending angle. Too much clearance between the slider and the guide rail will cause deviation of the trajectory, while too tight will increase the friction resistance, affecting the dynamic accuracy. If the level of the working table is not calibrated, it will make the force on both sides of the plate uneven, forming asymmetric bending. The stability of the hydraulic system is equally critical. Pressure fluctuations can change the actual bending force applied, resulting in angular errors. These mechanical factors need to be kept in optimum condition through regular maintenance and precision adjustments.

The role of mold factors on the accuracy

The selection and use of molds directly affects bending accuracy. The degree of matching between the upper and lower molds determines the accuracy of the bending line, and a mismatched combination of molds will cause the bending position to shift. Wear and tear of the mold will change its geometry, and the gradual accumulation of wear and tear will result in systematic deviation of the bending angle. Inadequate mold surface finish increases the resistance to material flow and affects the amount of rebound. Temperature changes in the mold can also cause small dimensional changes, a factor that needs to be taken into account during continuous operation. Reasonable selection of mold materials, regular inspection of wear and tear, and keeping the mold clean are necessary measures to ensure accuracy.

Material Characteristics and Accuracy

The characteristics of the material to be processed are important variables that affect bending accuracy. The modulus of elasticity and yield strength of different materials vary significantly, which directly determines the amount of rebound. Even for the same material, fluctuations in mechanical properties from batch to batch can lead to changes in bending angle. Material thickness tolerance is another key factor. Uneven thicknesses can change the bending force requirements, which in turn affects the angle consistency. Uneven distribution of residual stresses within the material may result in distortion or unevenness after bending. Fully understanding the material characteristics and adjusting the process parameters according to the actual situation is an effective way to improve accuracy.

Control system and precision guarantee

Modern bending machines commonly use numerical control systems, whose control accuracy directly affects the processing results. The resolution of the position sensor determines the accuracy of slider positioning, and low-resolution sensors cannot detect small displacements. The response speed of the servo system affects the dynamic following accuracy, and the hysteresis will cause the actual position to deviate from the command value. Closed-loop control can correct errors in real time, and has better accuracy retention than open-loop systems. Parameter settings during programming are equally important. Unreasonable acceleration and deceleration settings will cause mechanical vibration and affect stopping accuracy. Regular calibration of all aspects of the control system and keeping the software version up-to-date will help to maintain the equipment's optimum accuracy.

Influence of operating factors on accuracy

The skill level of the operator has a significant impact on bending accuracy. Correct clamping ensures accurate material positioning, while improper clamping can lead to bending line offset. The perpendicularity and parallelism of the mold installation need to be carefully adjusted, and small deviations will be magnified to the final product. The selection of process parameters requires empirical judgment, pressure, speed and other improper settings will directly affect the bending quality. Environmental factors such as temperature changes will cause thermal expansion and contraction of mechanical parts, which need to be considered in precision processing. Standardized operation process, perfect operation training and rich experience accumulation are all important conditions to ensure the bending accuracy.

Accuracy Maintenance and Inspection Methods

Maintaining the accuracy of the bending machine requires systematic maintenance measures. Regular lubrication can reduce wear and tear of moving parts and maintain transmission accuracy. The fastening status of key components needs to be checked periodically to prevent loosening leading to positional changes. Accuracy testing should use special gauges, such as angle rulers, height gauges, etc., to establish a complete record of testing in order to track the trend of accuracy changes. When accuracy degradation is detected, systematic adjustments should be made in accordance with the equipment manual, rather than localized corrections. Preventive maintenance is better than after-the-fact repair to maintain the accuracy of the equipment in the long term, the development of a scientific maintenance program and strict implementation is a necessary management measures.

The precision control of bending machine is a systematic project, involving mechanical, electrical, material, process and other factors. High-precision processing requires not only equipment with excellent performance, but also scientific process parameters, qualified molds, standard operation and perfect maintenance. With technological progress, the new bending machine adopts more technical means to improve precision, but the basic principle is still applicable. Understand these influencing factors and take targeted measures to achieve stable and reliable high-precision bending processing in actual production.

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