What are the design considerations for precision automotive sheet metal parts processing and bending parts?

2024-02-20 08:22:12

The materials commonly used in sheet metal processing include cold rolled plate (SPCC), hot rolled plate (SHCC), galvanized plate (SECC, SGCC), copper (CU) brass, red copper, beryllium copper, aluminum plate (6061, 6063, Hard aluminum, etc.), aluminum profiles, stainless steel (mirror surface, brushed surface, matte surface), depending on the function of the product, the materials used are different. When bending sheet metal materials, multiple considerations need to be made.

When the automobile sheet metal material is bent, the inner layer of the rounded part will be compressed, and the outer layer will stretch accordingly; during the process of precision sheet metal processing, when the thickness of the sheet metal material remains unchanged, the bending The smaller the angle, the greater the compression and tension on the material. When its tensile force reaches its tensile limit, the sheet metal material will crack or break.

Therefore, in the design of curved parts, small bending radii should be avoided to a large extent. Generally, sheet metal materials use larger bending radii. If there are no special requirements for the bending radius in actual operation, the bending fillet should be smaller than the thickness of the sheet metal material.

Cleaning steps:

1. Clean the surface of the sheet metal parts with water to remove any dirt on the surface. The cleaning method generally chooses ultrasonic cleaning: the cavitation, acceleration, and straight flow of ultrasonic waves in the liquid are used to directly and indirectly affect the liquid and dirt, so that the dirt layer is dispersed, emulsified, and peeled off, thereby achieving the purpose of cleaning. , which is an essential step before precision sheet metal processing.

2. Clean the sheet metal parts by adding soap, liquid detergent or 5% ammonia solution to the water.

3. Open the electronic manufacturing parts, pay attention to the opening method of the manufacturing parts, put the removed screws into the small box, and do not lose them.

4. Use a blower and a small brush to clean up the dust. The small brush can brush into the gaps in the capacitors and other parts, and the blower can blow into the slots of each board.