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Points to note in each process of sheet metal processing

Points to note in each process of sheet metal processing

Jul 18, 2020

Sheet metal processing is a very common processing technology now. There are many types of processing, and there are many types of processing. Various metal parts can be added. Many metal parts in our lives are made by sheet metal processing technology. There are many processes in sheet metal processing, and each process is very important, and a lot of attention needs to be paid during operation. The following editor is to share with you the points of attention in each process of sheet metal processing.

1. Cutting process

The appearance of the sheet metal parts that need to be paid attention to in the blanking, see whether the outer surface has rust, black spots, variegation, scratches, roll printing and other defects, and check whether the electrolytic plate, galvanized plate, aluminum plate need filming according to the process documents , Whether the parts are damaged in appearance after punching, whether the cutting marks and burrs are normal, whether the cold plate parts are coated with anti-rust oil, and whether the product placement is reasonable.

Looking at the size again, we use calipers and micrometers to confirm the thickness of the sheet, and use calipers, projectors (Laser QC), and QC templates to confirm the size and relative position of each punching hole of the stamping part to ensure that the external dimensions are qualified. Pay attention to the original drawing Round hole or square hole size with tolerance size.

2. Deburring process

Deburring also depends on the appearance and size. In this process, we must first confirm whether the appearance is damaged and whether there is protection; when deburring, avoid the grinding wheel from scratching into the surface of the workpiece and causing mechanical scratches. Do not use excessive force. Prevent the workpiece from being hit and collapsed. After deburring, check whether the sharp corners of the burr are clean.

Pay attention to the square hole with negative deviation on the part drawing. Remember not to artificially expand the square hole size; round corners and grind the beveled edges according to the drawing size. If the appearance requirements are strict, the rounded corners should be rounded with R gauge (or correspondingly suitable (With jigs) for adaptation, workpieces that do not need rounded corners (such as panels and handles that need to be covered with PC mask) must not be chamfered; aluminum products should not be deburred with a grinder, and it is recommended to use a file or sandpaper to remove glitch. When looking at the function, see if there is a bending adapting fixture, use the bending adapting fixture to check, and if the corresponding component is adapted, use the corresponding component for adapting.

3. Bending process

When bending, check whether the specification, direction, position, and quantity of the counterbore are correct according to the drawings. Pay attention to check whether the appearance of the counterbore is out of round, knife marks, etc., and pay attention to the debris left on the surface of the workpiece when cleaning the counterbore. Chips and debris from the drill press table.