Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1983-11-23
1986-04-08
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Assembling or joining
29511, 29 2541, 29520, 2924352, B21D 3900, B23P 1100
Patent
active
045803285
ABSTRACT:
The invention relates to a can-type housing made of metal, as a semi-finished product, such as is used, for example, for electrolytic capacitors. Furthermore, the invention relates to a process and a device for reducing the diameter of and flanging such a can-type housing. In the conventional way, the diameter of a can-type housing of this type was reduced from below in the direction of the upper open can edge. As a rule, flanging is carried out by a separate device. The invention improves the conventional measures by rewidening under dry conditions the can-type housing pre-widened under wet conditions. According to the process, the can-type housing provided with the housing widening is then closed from the can edge axially downwards so as to reduce its diameter, this process step being supplemented, in addition, by a further flanging step carried out in the same device. The reduction in diameter and the flanging are effected as a result of a relative axial displacement taking place in the same direction between the can and the device.
REFERENCES:
patent: 2604258 (1952-07-01), Murnane et al.
patent: 3099069 (1963-07-01), Pugh et al.
patent: 3221403 (1965-12-01), Simonton
patent: 4114244 (1978-09-01), Klaschka
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