Press brake plays an important role in the field of industrial manufacturing. As an important configuration of the production process, the press brake’s precision, processing speed, and compound index have always been the focus of technical upgrades and performance improvements.
In the process of gradually integrating information technology with industrial production activities, the automation level in the field of industrial manufacturing has significantly increased.
The special requirements put forward by modern production on product performance, product processing efficiency, etc. have created favorable conditions for the development of CNC technology.
From the application practice of press brake, although ordinary press brake can handle simple workpiece bending processing and meet the needs of multiple processing, when facing tasks of multiple varieties and large quantities of production, the entire processing process requires frequent material loading and unloading work.
This undoubtedly constitutes a certain restrictive effect on the efficiency of bending processing, which affects the processing efficiency of press brake.
1. Development conditions of CNC press brake:
Supported by existing technological conditions, domestically produced press brake machines have been frequently applied to mass production tasks.
However, the production efficiency of press brake machines is relatively low, which directly affects the productivity of enterprises.
In order to improve the current situation of industrial manufacturing, the manufacturing enterprises of press brake machines began to consider the combination strategy of existing press brake machines and CNC technology.
By using CNC technology to control bending parameters reasonably, the special needs of different production tasks in bending processing parameters can be met.
From the practical effect of the operation of CNC press brake, effective control of bending parameters can be achieved through the existing CNC technology.
This can accurately control the ram stroke and material blocking frame and complete the bending processing tasks of each batch of workpieces continuously, thus improving the efficiency of the entire processing process.
Moreover, the application of CNC technology effectively avoids the accuracy problem of products of the same batch, ensuring the quality of bending processing.
Stimulated by market demand, the processing of domestic CNC press brake machines has great market potential.
At the same time, new requirements put forward by processing enterprises in terms of product technology level, skill requirements, processing efficiency, and comprehensive product quality also bring severe challenges to the processing of press brake machine products.
Currently, the domestic CNC press brake industry actively adjusts its layout.
After years of technology, talent, and capital accumulation, the types of CNC press brake machines are gradually increasing, and their technical level is rapidly improving.
The compatibility between the performance of CNC press brake machines and the actual requirements of workpiece bending processing has also been significantly improved.
Under clear division of labor and correct guidance, the domestic CNC press brake machine industry has broken the situation of single product structure and serious regional homogeneity.
The valuable experience accumulated by manufacturing enterprises in product research and development and technological updates also provides good space for the stair-step development of domestic CNC press brake machines.
The current economic situation is stabilizing and improving, which brings a good development environment for the CNC press brake machine industry.
However, in terms of the industrial capabilities and level of domestic CNC press brake machine production enterprises, clear goals need to be formed for performance upgrading tasks and technological adjustment objectives to enter the fast lane of development.
2. Development trends of CNC press brake machine performance:
2.1 High Precision and High Production Efficiency:
For processing enterprises, the processing efficiency and quality of press brake machines have always been the focus of process control.
As an important performance indicator of the manufacturing industry, the processing accuracy and efficiency of CNC press brake machines are important reference indicators for evaluating their technical level.
Referring to the research, design, and manufacturing experience of existing CNC machine tools, introducing technologies such as high-speed CPU chips, multi-CPU control systems, and AC digital servo systems at the design stage of CNC press brake machines can greatly improve the processing efficiency of the machine tools and meet the actual needs of processing enterprises in terms of workpiece processing grades and quality.
Guided by market demand, future production of CNC press brake machines will continue to focus on the precision, speed, and features of ultra-precision machine tools characterized by precision, intelligence, and high speed, driving the development of the next generation of CNC machine tools.
2.2 Multi-axis Control:
Currently, multi-axis control of the CNC system has achieved significant development results.
In order to improve the precision of the control of processing parameters of CNC machine tools, make the entire processing process more convenient and accurate, and promote further improvements in operating accuracy, manufacturing units of CNC press brake machines are actively developing multi-axis control technology by increasing the number of motion axes.
In the field of CNC machining, multi-axis control is an important direction for upgrading the performance of CNC machine tools.
For press brake machines, reasonable application of multi-axis linkage processing technology meets the realistic needs of processing enterprises in workpiece bending processing, and has a certain promoting effect on improving the efficiency of bending processing.
By relying on multi-axis linkage processing, operators can complete multiple operations on one device.
For example, after the parts are clamped in one operation, operators can perform automatic tool change, rotation of the workbench, and other operations according to specific bending processing tasks.
From the application effect of multi-axis control, continuing to focus on the research and development of multi-axis machine tools, scientifically developing multi-axis linkage processing technologies suitable for bending processing, has important significance in completing composite processing tasks with multiple surfaces and processes.
It can help processing enterprises further expand their business scope and adapt to market demand.
2.3 Intelligentization:
The intelligent development of CNC machine tools is an important product based on the development experience of traditional machine tools, modern technologies and methods such as CNC technology and intelligent technology have been added to it.
Compared with general automation equipment, intelligent CNC press brake machines have superior performance.
Firstly, the introduction of intelligent technology can improve the operation quality of the entire processing control unit, ensure the stability of the CNC system.
Secondly, after the CNC machine tool equipment fails, the system can rely on intelligent modules, supporting sensors, and other elements to diagnose the fault automatically and timely feedback diagnostic information to the maintenance personnel.
Finally, the development of intelligence provides a concept and implementation path for the full automation of workpiece bending processing.
After breakthroughs are made in related technical problems such as adaptive control, feedforward control, expert systems development, fuzzy control, and learning control, the performance of CNC press brake machines will also enter a new stage.
2.4 Flexibility:
Flexibility is currently a difficult problem in the production of CNC press brake machines and a necessary condition for completing multi-variety bending tasks.
At present, solving the flexibility design of CNC press brake machines has become an important issue in the industry.
The development of a new generation of modular designs that aim to achieve flexible machining functions continues to influence the research and development of CNC press brake machine systems.
From the practice of workpiece bending processing, CNC systems designed to expand the coverage area and meet flexible processing needs can meet different users’ different needs in workpiece bending processing parameters, processing methods, etc.
Under the support of the same group control system, the CNC system can automatically adjust the dynamic adjustment of the information flow according to the input production process information and then organize different processing tasks in an orderly manner.
Taking the PBE series CNC press brake machine produced by a certain enterprise as an example, the typical feature of this machine tool is mechanical servo drive, oil-free operation, low energy consumption, and embedded human-machine interface, which greatly facilitates the operators to perform various operations.
At the same time, the system supports the expansion of bending automation, providing conditions for special bending processing tasks of workpieces.
Under the support of the flexibility concept, open software and hardware will also become an important direction for improving the performance of CNC press brake machines.
The significant characteristic of openness is that users can carry out secondary development of the system software and hardware parts according to the actual needs of production tasks, further expanding the processing function of CNC press brake machines and meeting users’ different processing needs in workpiece bending.
3. Conclusion:
Under the background of the rapid development of automation and intelligentization in machine tools, the development of CNC press brake machines also faces new challenges.
Faced with the new development situation of the CNC machine tool industry and the diversified needs of users, relying on talent, capital, and technology accumulation advantages, domestic CNC press brake machine manufacturers are starting to develop development plans around the upgrade of CNC systems, the development of auxiliary software systems, and flexibility.
The steady improvement of the performance of CNC machine tools will make important contributions to the progress and development of the machine tool industry and industrial manufacturing industry.
