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Individual
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Individual
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Priority to ES281785ApriorityCriticalpatent/ES281785A3/en
Publication of ES281785A3publicationCriticalpatent/ES281785A3/en
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining
(AREA)
Abstract
Improvements in the manufacture of internal threads, characterized by proceeding to the formation of the threads in the desired hole, diameter equal to the average diameter of the thread to be manufactured, thanks to the permanent deformation of the walls of said hole so that the material included in an area that constitutes the outer half-fillet of the thread is forced to constitute the internal half-fillet thanks to the action of a forming element endowed with multiple arcuate and concentric areas, of little length and distributed from a symmetric mode in the forming element and according to theoretical generatrices of the same. (Machine-translation by Google Translate, not legally binding)
ES281785A1962-10-101962-10-10Improvements in the manufacture of interior threads (Machine-translation by Google Translate, not legally binding)
ExpiredES281785A3
(en)