Bending simulation is to test the geometry of sheet metal parts on the model of the CNC machine à plier to check whether the designed bending sequence can be carried out smoothly without interference. This interference may cause the workpiece to collide with the mold, the machine tool itself, or nearby fixtures. The interference may also be due to the unreasonable bending sequence, which causes the workpiece to interfere with the mold, or the workpiece cannot be bent and formed.
If interference occurs, how can the CNC bending software help?
Bending simulation is a software that optimize intelligently in the bending space of parts. Usually, the system needs to select a reasonable mold, calculate the bending angle, optimize the bending sequence, and at the same time consider the interference of the workpiece in the bending motion, bending compensation, Factors such as cumulative error and die change.
Where can CNC bending software to use?
It may be more important to use bending simulation software in the design of sheet metal parts, which can ensure that all orders issued to the sheet metal workshop can actually be manufactured without modification. If the design must need to modify, it can adjust accordingly through design→simulation→redesign to avoid manufacturing problems and shorten the production cycle. It is technically saying manufacturing-oriented design, or DFM (Design for Manufacturing).
What kind of software can use to drive the Machine à cintrer CNC?
The advantage of the CNC software independent of the manufacturer is that it can simulate the CNC machine tools of different manufacturers in the same workshop. Some software can support the simulation and NC programming of multiple machine tools, and can use the bending machines of different manufacturers to perform the process test on the same sheet metal part. The disadvantage of the third-party software is that the interface with the machine tool may need to set, the machine tool specific CNC code and its format need to identify, and the machine tool 3D model used for simulation also needs to be created. However, independently developed software can work with multiple machine tool manufacturers, who often sell software along with machine tools, giving buyers the advantage of meeting both options.
In the bending simulation, how to build the machine tool and mold model?
The 3D model of the bending machine can create in several different ways. The most common is to simply import the 3D model used in the machine design, usually using a CAD application. This method has its advantages but also has some disadvantages. The advantage is that the model already exists, and its dimensions are very accurate.
The disadvantage is that the model may be too accurate and detailed, resulting in a large amount of data to process by the software, and it takes a long time to run, which means it will run slower. The 3D models used to manufacture machine tools usually have thousands of parts, such as chains, O-rings, screws and washers. They also include components in the machine tool cabinet, which are actually not related to simulated interference detection. Another disadvantage is that these 3D models usually do not define the range and direction of motion of various moving parts.
Can the bending simulation programming software compensate the material characteristics?
Some material properties may affect the bending of the part. For example, springback is the tendency of the material to return to its original shape after stressing, which causes the bending angle to be different from the expected angle. The method of compensating for spring back may use excessive bending. For example, to obtain a 90° bend, you need to bend a slightly larger angle. However, this slightly larger bending angle also affects the length between the bending features.
Determining the require bending angle to resist springback can in different ways, which calls automatic compensation of the machine tool. Material compensation factors can also consider in the simulation. The bending simulation software can integrate with the CAM system. The CAM system can measure the workpiece, and then compare the result with the target data, and the software adjusts the bending.
How to use the results of bending simulation programming on the machine tool?
For machine tool operators, one of the more time-consuming tasks is to calculate and input the necessary data required for bending the workpiece, especially the operator must adjust the data for bending compensation, or when modifying the bending sequence data. At this time, if it carries out on a CNC bending machine, the machine tool will be idle. If other production stations in the workshop continue to produce workpieces that need to be bent, this bending machine will become a bottleneck in manufacturing.
Different CNC bending machines can use bending simulation software?
Generally speaking, the bending simulation software needs different post-processors for different types of CNC bending machine tools, as well as the 3D model of the machine tool (usually the shape of the machine tool and the movement of the upper and lower molds). These types of CNC bending machines are generally It is called an upward or downward bending machine, and the popular bending simulation software on the market does not support multilateral bending centers.
What other functions does the CNC bending simulation software provide?
Although all bending simulation software products have the core functions of bending simulation, such as interference detection and bending sequence optimization, as well as visualized graphical representation of bending, some programs provide some additional functions.
These include import interfaces that can support various drawing platforms or data formats, such as IGES or STEP, so there is no need to create geometry in the simulation application itself. This is particularly useful for sheet metal manufacturers because they can receive technical drawings in these formats from their customers, import and perform graphic repairs, and then perform simulations.
What are the limitations of CNC bending simulation software?
Although powerful bending simulation software can be very effective in improving productivity and reducing costs, it needs to be aware of some limitations. The most important thing is that computer simulation cannot replace engineers with professional knowledge. The computer bending simulation results are related to the accuracy of the machine tool and mold models. If the model is wrong, the simulation cannot be accurate. Therefore, the computer simulation software adopts the application mode of human-computer interaction like other software of computer-aided manufacturing.
What progress can CNC bending simulation software bring?
The first is from the design data of the part to the work of driving the bending machine. In the whole process, only the original graphic data of the part design need to ensure the uniqueness of the data in the information integration. Bending simulation is a multi-constraint, multi-factor optimization program. The equivalent bending process completes by an experienced senior technician, regardless of whether the software operator is just a novice. Bending simulation does not take up machine time, which means that machine tool production is not affected.
In addition to the above, if the technology of bending simulation applies in batches, the improvement in efficiency is very amazing. When applied in the design process of sheet metal parts, design defects can be discovered early.