Cutting – Means to drive or to guide tool – Means to change datum plane of tool or tool presser stroke
Patent
1975-11-11
1977-08-09
Abercrombie, Willie G.
Cutting
Means to drive or to guide tool
Means to change datum plane of tool or tool presser stroke
83560, 83563, 83685, 83368, B26D 502
Patent
active
040403203
ABSTRACT:
A punching machine for use in punching holes in the sides of articles incorporating two C-shaped assemblies forming punching tool supports and guided within the machine in such a way that they can be displaced and moved away from each other. Means are provided for placing the assemblies, on the one hand, in a working position, in which the position of a punch tool on one of the tool supports is maintained at a predetermined distance from a guide plane coinciding with a guiding surface on the article to be drilled, and in which the spacing of the tool supports is maintained at a predetermined value, and on the other hand, in a position for rotation of the article to be drilled, such that each assembly is displaced in relation to its working position in the sense of an increase in the distance separating the two assemblies.
REFERENCES:
patent: 1175198 (1916-03-01), Thomas
patent: 3805659 (1974-04-01), Fisher, Jr.
patent: 3858471 (1975-01-01), Valente
patent: 3892154 (1975-07-01), Duffy
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