Workshop directors or employees in sheet metal fabrication plants should take note. If possible, you can combine your actual situation and print it out for everyone according to the following content.
Precautions when bending
1 Check the bending direction, especially for products with similar symmetry
2. Pay attention to the positive and negative tolerance requirements of bending dimensions
3. For products with symmetrical structure, check whether the stamping direction is required
4. Check the bending die marks
5. The flat structure of electroplating products should not be crushed, and stroke seams should be left, and then crushed after electroplating
6. When the hole is close to the elbow, it will cause the material drawing and wire pressing process
7. The elasticity of aluminum, copper and stainless steel should pay special attention to bending cracks
8. Check whether the bending die and product placement will cause product indentation and scratches
Precautions for cutting
1 When calling the program, it should be consistent with the program number written by the programmer on the drawing
2. Check the material and thickness
3. After the first piece passes the self-inspection, it will be reported to the quality control department for inspection, and then mass production can be carried out
4. Rivet holes should be checked with a pin gauge
5. The same batch of goods and upper and lower covers should have the same material color
6. The production lines of aluminum products and copper products should be consistent
7. Check the broken edges, broken tape, guide mold overprinting and scratches of each offline circuit board product
8. When secondary processing, check the clamping mark of each product fixture
9. Use laser cutting to check the burning loss, welding slag and sharp corner burning loss of each plate
10. Count and punch holes, check each board for damage to the small holes. WeChat public account mechanical engineering collection, engineer gas station
1. If the drawing product has protrusions, it should be punched out directly with multiple punches, and the raw materials should be taken out first
Programming Considerations
1 Check whether the drawing development date is consistent with the drawing file to prevent version errors
2. Drawing changes bixu overlay program files and CAD files
3. When secondary processing is required, draw circle marks on the drawings and drawings
4. Check porosity, porosity and duplication when turning off layers or deleting unnecessary pixels
5. Check porosity, porosity, repeat porosity after programming
6. If there is no suitable punch, first communicate with the customer whether the design size can be appropriately modified, otherwise use laser cutting or custom cutting tools
7. When the punch is selected for the rivet hole, the tolerance should be within 0.05, and the company's rivet bottom hole standard should be strictly observed
8. When laser cutting the shrapnel, the laser inlet or micro-connection bixu is arranged on one side of the rivet hole at a 45 degree angle
9. The laser incident position should be located on the hidden surface of the product as much as possible, and it is not visible or difficult to see after the customer assembles
10. When the product is formed into a convex shell, pay attention to whether the surrounding holes and shapes require secondary machining.
English 
Chinese