An eccentric shaft and its forming process
An eccentric shaft and eccentric technology, applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammering machinery, etc., can solve the problems of large machining allowance and high comprehensive cost, reduce machining allowance and improve longitudinal mechanical properties , to ensure the effect of the overall mechanical properties
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[0035] The finished eccentric shaft to be forged is as image 3 and 4 As shown, the diameter of the large outer diameter end is 300mm, the height is 140mm, the diameter of the small end of the eccentric shaft is 180mm, the height is 340mm, and the central axis distance between the large outer diameter end and the small end of the eccentric shaft is 60mm.
[0036] The forging process is as follows:
[0037] (1) Processing eccentric mold 4 (such as Figure 5 As shown), the eccentric mold 4 has a large outer diameter end cavity 41 and an eccentric shaft small end cavity 42 with the central axis staggered, and the large outer diameter end cavity 41 has a margin according to the size of the large outer diameter end of the eccentric shaft. The size of the small end cavity 42 of the eccentric shaft leaves a margin according to the size of the small end of the eccentric shaft;
[0038] Preferably, an annular step 43 is processed at the junction of the cavity 41 at the large outer d...
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