Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1991-01-31
1992-10-20
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Assembling or joining
29525, 29773, 29778, 29809, B23P 1100
Patent
active
051558920
ABSTRACT:
Hydraulic cylinders each comprising a hollow cylinder casing, a ram, and an annular seal are assembled automatically by a mechanism that stores and feeds seals, ram and casing members into separated axial alignment and then axially moves the components together until they are assembled. A tapered mandrel protects the inner surface of the seal from abrasion as it is fitted over the end of the ram, and a tubular insert with collapsing finges guides the ram and protects the seal from abrasion by the end of the casing as the ram is fitted into the casing. An automatic cap threading machine threads a cap in the open end of the casing after the push rod has been assembled in the casing. Retractable support means are provided for certain of the components in order to permit an assembly mechanism to fit over the components and move them along an axial path.
REFERENCES:
patent: 2997026 (1961-08-01), Zimmerer
patent: 3967363 (1976-07-01), Meyer
patent: 3994059 (1976-11-01), Watson
patent: 4115913 (1978-09-01), Moriya et al.
patent: 4190940 (1980-03-01), Lawrence
patent: 4330926 (1982-05-01), McCall
patent: 4794685 (1989-01-01), Hillier
patent: 4870748 (1989-10-01), Hensgen et al.
patent: 5016346 (1991-05-01), Gerst et al.
Eley Timothy V.
Martin C. Richard
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