With the popularization of numerical control equipment, CNC Flame Cutting Machine is gradually accepted and recognized by users. It is inevitable that the equipment will produce errors during operation. How can the error generated by CNC flame equipment be solved compared with other cutting equipment? Today we'll find out. The main cutting methods of CNC cutting equipment are divided into flame cutting and plasma cutting. Among them, plasma cutting is better than flame cutting in cutting precision and speed, but it is better to use flame cutting for material cutting of 25mm thickness and above. For flame cutting, because acetylene or propane gas is used as the cutting energy source to eliminate the influence of gas supply pressure and gas supply purity factor, the gear ratio of the machine tool train is too large during the cutting process, which makes the transmission rigidity of the machine tool train. Obviously low. In addition, the machining accuracy and the gear return error caused by the machining accuracy and assembly accuracy of the parts in the equipment have a significant impact on the transmission accuracy of the machine itself, resulting in a very low torch running speed (sometimes as low as 0.1 m/min or less). At the same time, the machine tool has a large running error in the direction along the track. CNC flame Cutting Machine manufacturers remind you: I. You need to test the running accuracy of your own numerical control equipment. You can try to use the scribing device to perform the scribing test to see if the size difference is caused by the operation of the device itself. II. If there is no problem through the device detection, then the following factors can be used to judge the error factors: 1. When the flatness of the plate is not good, the size after cutting is easy to change. 2. The stress in the material is released unevenly. When cutting, as the material is removed, the local internal stress is released and redistributed, which will cause the steel plate to displace and deform, causing the size to be out of tolerance. 3. The flame cutting speed is slow and the preheating time is long, which causes the sheet to absorb excessive heat and undergo thermal deformation. It can be solved according to the shape and experience of the part when programming the CNC cutting program. 4. When cutting long and long strips with large length and width, use common edge cutting, first cut the long side, and then cut the short head after the sheet is cooled. The numerical control operation equipment developed by Blol Intelligent has summed up the experience from the actual operation, absorbs the advantages of the industry, and combines its own unique technology to significantly improve the cutting speed and precision to meet the multi-dimensional needs of customers. Buluoer CNC flame cutting machine
III. The effect of thermal expansion on cutting accuracy Since the amount of thermal expansion of the steel plate at different temperatures is different, the volume change of the steel plate is caused, and if the kerf compensation k is not corrected, the cutting trajectory does not change, and the volume of the cut component is reduced after cooling, of course, the size is of course It is getting smaller. If the operator is unfamiliar with the control of the thermal expansion of the steel plate or has insufficient experience, it can also use the physical cooling method (such as circulating cooling water, coolant, etc.) to track and cool the cutting workpiece, so that the cutting steel plate is as close to room temperature as possible. The state of the steel sheet is controlled so that the size of the cut part is ensured. IV. The impact of cutting path selection Another key to ensuring the size of the part is the choice of cutting path. If the cutting path is not well chosen, the CNC flame cutter will not be able to cut high-precision parts. During the cutting process, no matter which cutting path is selected, it is necessary to have sufficient joint rigidity between the part and the steel plate before the part is cut close to the completion point to ensure the cutting size and precision of the part.
