Welding method of copper press riveting nut column on sheet metal part
A technology of rivet standoffs and welding methods, which is applied in the direction of nuts, connecting components, threaded fasteners, etc., can solve the problems of weak connection between copper rivet standoffs and sheet metal substrates, and achieve not easy to fall off and firm combination Effect
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Embodiment 1
[0027] This embodiment provides a welding method for copper standoffs on sheet metal parts, including:
[0028] S1: A tapered hole is formed on the sheet metal substrate 1, and the diameter of the large hole end is R1( figure 1 middle right end), the diameter of the small hole end is r1( figure 1 Middle left end), the surface roughness of the stepped hole is Ra12.5;
[0029] S2: Set the copper rivet nut stand 3 in an aluminum sheet 2. The aluminum sheet 2 is a tapered surface and a straight cylindrical surface from the large diameter end to the small diameter end (one end is tapered and the other end is cylindrical), and the aluminum sheet The outer diameter of the large diameter end of 2 is R2 ( figure 1 middle right end), the outer diameter of the small diameter end of the aluminum sheet 2 is r2 ( figure 1 Middle left end), where r2 is less than R1 and greater than r1, R2 is 1mm greater than R1, the roughness of the central through hole of the aluminum sheet 2 is Ra3.2, a...
Embodiment 2
[0033] This embodiment provides a welding method for copper standoffs on sheet metal parts, including:
[0034] S1: A stepped hole is formed on the sheet metal substrate 1, and the diameter of the large hole end is R1( figure 1 middle right end), the diameter of the small hole end is r1( figure 1 Middle left end), the surface roughness of the stepped hole is Ra12.5;
[0035] S2: Set the copper rivet nut stand 3 in an aluminum sheet 2. The aluminum sheet 2 is a tapered surface and a straight cylindrical surface from the large diameter end to the small diameter end (one end is tapered and the other end is cylindrical), and the aluminum sheet The outer diameter of the large diameter end of 2 is R2 ( figure 1 middle right end), the outer diameter of the small diameter end of the aluminum sheet 2 is r2 ( figure 1 Middle left end), where r2 is smaller than R1 and larger than r1, R2 is 1.5mm larger than R1, the roughness of the central through hole of the aluminum sheet 2 is Ra3.2...
Embodiment 3
[0039] This embodiment provides a welding method for copper standoffs on sheet metal parts, including:
[0040] S1: A stepped hole is formed on the sheet metal substrate 1, and the diameter of the large hole end is R1( figure 1 middle right end), the diameter of the small hole end is r1( figure 1 Middle left end), the surface roughness of the stepped hole is Ra12.5;
[0041] S2: Set the copper rivet nut stand 3 in an aluminum sheet 2. The aluminum sheet 2 is a tapered surface and a straight cylindrical surface from the large diameter end to the small diameter end (one end is tapered and the other end is cylindrical), and the aluminum sheet The outer diameter of the large diameter end of 2 is R2 ( figure 1 middle right end), the outer diameter of the small diameter end of the aluminum sheet 2 is r2 ( figure 1 Middle left end), where r2 is less than R1 and greater than r1, R2 is 2mm greater than R1, the roughness of the central through hole of the aluminum sheet 2 is Ra3.2, a...
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