The cutting method for sheet metal processing involves a pair of disc cutting edges with opposite rolling directions to cut the sheet metal. The cutting of the chassis and cabinet refers to the process of cutting raw materials into the desired shape according to needs, and also the process of obtaining rectangular workpieces through a plate shearing machine. Various steel plates, copper plates, aluminum plates, and non-metallic materials with a thickness equal to the rated value of the machine tool must be cut, and must be free of hard marks, welding slag, slag inclusions, and weld seams. Excessive thickness is not allowed, and overloaded use of the cutting machine is strictly prohibited. Do not shear quenched steel materials, hard steel, high-speed steel, alloy steel, castings, and non-metallic materials.
The following are sheet metal parts and cutting requirements for reference only:
1、 Requirements for sheet metal parts and cutting of chassis and cabinet
Cutting section: Due to rough cutting of sheet metal parts, for oxidation, electroplating, or spray molded parts, the cutting end face should be processed by adding polishing processes;
Shear parallelism: The shear parallelism is about 0.3%. When the accuracy of the part exceeds this value, the process should adopt other methods of cutting;
Cutting burrs: The shearing machine cuts burrs about 4-6% of the plate thickness. When the burrs are greater than 0.1, an additional deburring process is required.
2、 Cutting gap selection
Shearing gap: Choosing the cutting gap based on material and plate thickness can ensure the quality of part cutting and the safety of equipment cutting, so it is particularly important to choose the correct cutting gap.
3、 Cutting angle selection
Cutting angle selection: Selecting a cutting angle based on material and plate thickness can improve the cutting quality of the part; For parts of the same material and plate thickness, if the shear angle is taken as a small value, the relative reduction of deformation caused by the part's shear and the improvement of shear quality will be achieved; On the contrary, the twisting deformation of the parts increases relatively, while the shear quality decreases.
4、 Shear clearance and adjustment
The main factor affecting the cutting quality of parts is the cutting gap, so operators must adjust the gap between the upper and lower cutting knives to the specified range for sheet cutting by rotating the dial on the machine tool based on the material and thickness of the cutting.
5、 Upper and lower cutting knives and rear gear
The cutting of sheet metal parts is controlled by the program in the machine tool system to control the mutual action of various mechanisms, and the cutting is completed by the upper and lower blades; The parallelism of shearing is ensured by the parallelism accuracy between the rear gear and the lower cutting tool.
In terms of production strength, Runbo Electromechanical has entered Industry 4.0, from raw material warehousing and quality inspection that exceeds the national standard requirements, to automated production line equipment, and to the high standard of 0.1mm in machining processes. Every step and process ensures the standardization of sheet metal processing technology, ensuring the high-quality and efficient output of chassis and cabinet products.