Metal stamping process flow chart
Metal stamping process can be divided into two categories: separation process and forming process. The purpose of the forming process is to make the sheet plastic deformation without breaking the blank condition, to make the required shape and size of the workpiece. The separation process is also known as blanking. Its purpose is to separate the stamping parts from the sheet material along a certain contour line, while ensuring the quality requirements of the separation section. In the actual production, it is often a variety of processes integrated application to a workpiece. Blanking, bending, shearing, drawing, bulging, spinning and straightening are several main stamping processes.
1. Design the process drawing of the workpiece
Design and draw three parts of a hardware artifact whose function is to represent the structure of a sheet metal part by drawing. Draw the unfolding of a piece, that is, the unfolding of a complex part into a flat part. Analyze part drawing, quickly understand the workpiece size, coordinate points, lines, curves and cutting surface position relationship, determine the origin of workpiece coordinates, calculate the coordinates of each vertex and curve connection point coordinates.
2, the correct process
The selection of workpiece surface processing method is to select a reasonable processing method for each surface with quality requirements. Generally, according to the requirements of surface accuracy and roughness, the final processing method is selected to determine the processing method of the preparation process before finishing, that is, the processing scheme is determined.
3. High efficiency of cutting method selection
The underside of the scissors is the length and width of the scissors shape. If there is a punching Angle and cutting Angle, the punching and die punching combined to form the cutting Angle. The underside of the punch is a flat sheet structure that is used to flush the part after one or more steps are unrolled. Its advantages are short working time, high efficiency, often used in batch manufacturing. Programming software is used to write the drawing extension diagram into the identifiable content of CNC machining machine tools. Let it be programmed to cut the structural shape of its cutlery. Laser finishing is the use of laser cutting, cutting out the shape of a board on the structure.
4. Make the stamping sequence
Generally there are punching Angle punching, punching convex shell, punching tear, pumping and other processing procedures, the processing needs to have the corresponding mold to complete the operation. In addition, the bending process also requires a bending bed and the corresponding bending die to complete the operation. The design principle is to give priority to the next operation in the absence of interference.
5. Complete the tightening process
Generally, the operation is completed by stamping riveting process or hydraulic riveting machine. Fasteners are riveted to sheet metal parts. Pressure riveting is commonly used in pressure riveting bolts, compression riveting nuts, pressure riveting screws, etc. The process of flanging taps is to cut a slightly larger hole in the smaller bottom hole and then pump water into the faucet hole. This can improve its strength and avoid sliding teeth. It is generally used for workpiece with high thin plate thickness. When the plate thickness is large, there is no need for direct flanging and tapping.
6. Assembly method of parts
Welding The welding of multiple parts together for machining purposes or the joint of individual parts to increase their strength. The surface treatment usually has phosphate film, electroplated polychromatic zinc, chromate, baking paint, oxidation, etc. The choice of specific surface treatment methods is based on demand. Assembly is the assembly of multiple parts or assemblies in such a way that they become complete projects.
The above is the flow of metal stamping process and a detailed flow chart. In the process of metal processing, a processing sequence of metal process should be followed, so as to have more efficient production capacity, improve efficiency and reduce unnecessary waste of finished products.
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