Tap and method of making a tap with selected size limits

Details Tap and method of making a tap with selected size limits Tap and method of making a tap with selected size limits

B - Operations, Transporting

23

G

B23G 5/06 (2006.01)

Patent

CA 2248944

A nib tap (10) configuration in which the thread turns (16) are of progressively increasing pitch diameter over a range of size limits associated with a standard basic pitch diameter. A particular size limit can be provided by grinding off the turns (16) of a larger limit size. A family of taps (10) covering an extended range of pitch diameter size limits allows selection over the extended range.

L'invention concerne un taraud (10) pour écrou dans lequel les spires (16) du filetage ont un diamètre primitif qui augmente progressivement sur une plage entre des tailles limites associées à un diamètre primitif standard de base. Une taille limite particulière peut être réalisée en meulant les spires (16) d'une taille limite plus grande. Une famille de tarauds (10), couvrant une large plage de tailles limites associées aux diamètres primitifs, permet un choix dans une gamme large.

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