In order to meet the needs of continuous upgrading in the automobile manufacturing industry, the production of small batches and multiple varieties of vehicles is quite common. The original processing technology of general-purpose automobile body parts can no longer fully meet today’s product quality and production needs. Among them, laser cutting machines have an irreplaceable role in high-precision, porous and complex shape accessories.
Now many truck manufacturers have inhouse CNC precision plasma cutting machines, laser cutting machines, etc., which are used in the processing of sheet metal parts with complex shapes and high precision requirements in automobiles.
The laser cutting machine plays an irreplaceable role that other CNC cutting equipment can not do. Its main advantages are as follows:
Suitable for cutting a variety of material parts
Automobile materials include low-carbon low-alloy steel, high-strength steel, atmospheric corrosion-resistant steel, ferritic stainless steel, austenitic stainless steel and aluminum alloy, etc. Laser cutting equipment can be processed, and its processing range can cover almost all materials in the car.
High processing accuracy
Laser cutting equipment has higher processing accuracy than other cutting equipment and can meet the processing requirements of high-precision accessories.
Narrow slit width
The small slit is beneficial to reduce the spacing of the accessories, improve the material utilization rate, and produce less cutting slag during cutting.
High material utilization
When cutting parts, you can cut different parts of the same thickness and material, and make full use of the leftover material of the raw materials.
Low cutting roughness value
Laser cutting equipment, when cutting parts of the same material, the cutting roughness value is lower than other equipment. In the automobile manufacturing industry, there are obvious differences in the section roughness of workpieces processed by different CNC cutting equipment, and the laser cutting section roughness value is low.
Small heat affected zone
During the laser cutting process, the edge of the cut material will generate a heat-affected zone due to heat. However, laser cutting has lower energy concentration and heat input than other processing methods. Compared with fine plasma cutting and flame cutting, the heat-affected zone is relatively small, and the heat input is small. It is suitable for ferritic stainless steel that is easy to grow grains and is easy to be quenched by heating. The hard tendency of high-strength steel is of great significance and is beneficial to improving the quality of the weld.
Low cost of laser cutting for small batch production
In mass production, automobile manufacturers normally choose the process of mold blanking for processing, the cost of making molds is equally spread to each accessory, and the production cost is lower. However, if it is small batch production and the processing technology of die punching is adopted, not only the production cycle of the die is longer, and the timeliness of parts processing cannot be satisfied, but the mold production cost is evenly distributed to each part, and the processing cost is relatively high.
Therefore, CNC cutting is generally used for processing. When using CNC plasma cutting, because the piercing ability of plasma cutting is weak, the cutting precision is low, and the quality of the hole formation is poor, an additional drilling process is needed, and a drilling mold needs to be made. Not only the processing time is longer, but the cost is also relatively high.
Laser cutting can ensure that parts are formed at one time, which is beneficial to improve the timeliness of parts processing, and is suitable for small batch production. How to choose the cutting process requires comprehensive consideration based on the size, shape, cost and accuracy of the accessories. When the size of the accessories is small, and the requirements for the shape and size of the hole and the positioning size are high, the laser cutting method is more economical.
With the changes in the automobile manufacturing industry and the integration of the global economy, various automobile manufacturers have shifted from a single, large-volume national railway vehicle production to a small-volume, multi-variety export vehicle. This form of transformation has also brought revolutionary changes to the manufacturing of auto parts. The frequency of use of sheet metal processing equipment such as original shears and punching machines is getting lower and lower. The use of CNC plasma cutting machines and CNC flame cutting CNC flexible equipment such as laser cutting machine and laser cutting machine. Among them, laser cutting equipment has the advantage of processing high-precision, small-sized, complex-shaped accessories, and can process a variety of materials, which has an irreplaceable role.
Post time: Dec-04-2020