Four major applications of laser cutting machines in the construction machinery industry

The main application of laser cutting machines in the construction machinery industry is sheet metal processing, and fiber laser cutting machines are generally used. Cutting applications mainly include slender workpieces, sheet metal parts with many holes, reserved process gaps for sheet metal parts, production of sheet metal templates and drilling samples.

1. Application in slender workpiece

In addition, because the laser cutting machine generates more concentrated heat during cutting, the heat-affected zone on the workpiece is small. The laser cutting machine in the construction machinery industry can effectively control the thermal deformation of the workpiece, especially for straightness. The effect of the slender workpiece is better. When the length of the workpiece reaches 5500mm or more, the 'micro-connection' function of the cutting machine can be used to effectively control the straightness of the workpiece.

2. Application in the reserved process gap of sheet metal parts

The process gap reserved for sheet metal parts is also called crack arrest groove or process hole. In sheet metal production, the design of process gaps generally has three forms: the first is that two or more bending parts are adjacent, as shown in Figure 1; the second is that the bending part of a certain edge is partially complete in the length direction. Bend, as shown in Figure 2. For the second process gap, the traditional form is shown in Figure 2, leaving a × b rectangle, if you use a laser cutting machine to cut a slit of length a directly at this position when cutting, for some requirements For relatively tall workpieces, the laser cutting machine can be used to directly reserve the form of slitting. In the third form, when the two ends of the sheet metal part cannot be supported on the lower mold of the bending machine in a suspended position, the workpiece will deform. In this case, the laser cutting machine can be used to predict the workpiece Leave a slit to prevent the workpiece from deforming during bending. The blanking diagram and the reserved slit are shown in Figure 3.

3. Application in sheet metal parts with more holes

In the construction machinery industry, laser cutting round holes, when facing a specific plate thickness, as long as the diameter of the round hole of the workpiece is greater than or equal to the value of the corresponding minimum diameter, and the roughness and diameter are required to be guaranteed by the cutting machine The laser can be used for direct blanking within the range of capacity, eliminating the need for drilling procedures and improving labor production efficiency. For some workpieces with many holes, the laser dot function is used to determine the position of the hole, which saves the time for positioning holes for the subsequent hole drilling process, and also saves the production cost of the drilling template, which not only improves the production efficiency, And the accuracy of the product is improved.

4. Application in the production of sheet metal templates and drilling templates

For some sheet metal parts in the construction machinery industry, for some irregularly shaped workpieces, in order to improve the accuracy and efficiency of the detection of the blanking parts, the laser cutting machine is used to make blanking detection templates, such as the support angles on the bulldozer ripper, and the excavation Machine arm and the big head plate on the boom, etc.; for some rolled-formed workpieces, it is necessary to use a template that matches the arc to assist in the production and inspection during the production and inspection of the workpiece, in order to improve the accuracy of workpiece production and the efficiency of inspection Under normal circumstances, laser cutting is used to produce prototypes of these workpieces, and the marking function of the laser cutting machine is used to mark the boundaries of arcs and straight edges on the prototypes, such as the arc plate of a bulldozer, the bucket of an excavator Bent plates of rods and booms, buckets, etc.

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