Apparatus for staking

Metal working – Means to assemble or disassemble – Overedge assembling means


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29509, 264249, B23P 1100, B21P 3900, B29C 6500




A method and apparatus for staking a formable projection, for example, a tab or boss, to retain plural articles in a unitary assembly. A projection on a first article is brought into registering position with an aperture in a second article to form the assembly. The assembly is clamped by a spring-loaded clamp pad which bears against the second article and surrounds the projection. The projection is then staked by action of a tool which travels reciprocally within the clamp pad and has a tip which cooperates with the clamp pad to form a cavity of desired shape. The forming stroke of the tool is against the resistive force of the spring, which increases the clamping force of the clamp pad. The formed projection is therefore contained within the inner boundary of the clamp pad and tool tip to thereby promote uniform head formation.

patent: 453182 (1891-06-01), Gaines
patent: 2521505 (1950-09-01), Doyle
patent: 2941428 (1960-06-01), Riggio et al.
patent: 3367809 (1968-02-01), Soloff
patent: 4041596 (1977-08-01), Mink
patent: 4181698 (1980-01-01), Hayes


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