Mobile phone middle frame manufacturing process
A manufacturing process and a technology for the middle frame of a mobile phone, which is applied in the field of metal processing and can solve the problems of low processing cost and the like
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[0021] see figure 1 , figure 2 Shown is the outer frame 10 of the middle frame of the mobile phone that needs to be die-casted. The outer frame 10 is formed by forging or extrusion and processed by CNC. The outer frame 10 does not rule out being processed by other processes.
[0022] The outer frame 10 is approximately a closed rectangular structure, including an outer side 11 , an inner side 12 opposite to the outer side 11 , and upper and lower sides 13 between the inner side 12 and the outer side 11 . The inner surface 12 of the outer frame 10 is inwardly processed to form a protrusion 14, and the protrusion 12 includes a thinner protrusion 141 and a thicker protrusion 143, and the thinner and thicker protrusions 141, 143 The thicknesses are all smaller than the thickness of the outer frame 10 itself. A through hole 142 is formed on the thinner protruding portion 141, and the through hole 142 opens toward the inner side, and a groove-like structure 144 is formed in the ...
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