Cutting by use of rotating axially moving tool – Tool or tool with support – With pitch-stabilizing ridge
Patent
1976-10-04
1978-02-21
Bilinsky, Z. R.
Cutting by use of rotating axially moving tool
Tool or tool with support
With pitch-stabilizing ridge
10141R, B23G 506
Patent
active
040749509
ABSTRACT:
A thread forming tap comprising a shank section, a body section extending longitudinally from the shank section, a helical thread formed on the body section and having radially outwardly converging flank portions which define an inclined ramp arranged at a preselected angle to the axis of the tap and adapted to form a complementary inclined locking ramp on the thread to be formed by the tap.
REFERENCES:
patent: 250728 (1881-12-01), Harvey
patent: 2121193 (1938-06-01), Hanicke
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