Thread cutting method and apparatus

Details Thread cutting method and apparatus Thread cutting method and apparatus

1991-05-09

1992-05-12

Briggs, William

Gear cutting, milling, or planing

Milling

Thread or helix generating

82 111, 36447433, 409 69, B23C 334, B23B 100

Patent

active

051121697

ABSTRACT:
In the thread cutting method according to the present invention, the cutting amount S in each of the thread cutting operations from the second thread cutting operation to the (N-1)th thread cutting operation can be made less than and closest to the allowable cutting amount S.sub.p in each of the thread cutting operations by respectively determining as the cutting amount S.sub.1 in the first thread cutting operation and the cutting amount S.sub.n at a cutting depth which corresponds to the bottom of thread the values which are less than and closest to the allowable cutting amount S.sub.p obtained at the two cutting depths. In consequence, wear of the tool can be reduced and the time required for the thread cutting process can be shortened while the thread cutting accuracy can be maintained high by determining either of two equations from the prerequisites and the processing conditions and then by designating the equation to be adopted.

REFERENCES:
patent: 3854353 (1974-12-01), Cutler
patent: 4025764 (1977-05-01), Tack
patent: 4173786 (1979-11-01), Kuhnell

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