Method of screwing a pipe to an object

Details Method of screwing a pipe to an object Method of screwing a pipe to an object

1995-04-28

1996-07-30

Vo, Peter

Metal working

Method of mechanical manufacture

Assembling or joining

292405, B23P 1900

Patent

active

055399720

ABSTRACT:
Disclosed is a method of screwing a pipe having threads with a different pitch on the outside and inside thereof into an object and assembling the same thereto by using a CNC machine tool. A male thread provided to a spindle is moved to an initial point I and point R by a quick traverse and then moved downward from the point R at a given speed and RPM. More specifically, a pipe is screwed into the object in accordance with the pitch of the thread on the outside thereof and assembled to a female thread of the object. When the male thread reaches a point Z and the pipe is assembled to the female thread of the object, the male thread is moved upward to the point R at a given speed and RPM. More specifically, the male thread is relieved from the pipe in accordance with the pitch of the thread on the inside of the pipe. Only the male thread is moved upward by the movement thereof to enable the pipe to remain engaged with the female thread, whereby the assembly of the pipe to the object is completed.

REFERENCES:
patent: 3137186 (1964-06-01), Rosan et al.
patent: 3152495 (1964-10-01), Neuschotz
patent: 3254690 (1966-06-01), Neuschotz
patent: 3481022 (1969-12-01), Neuschotz

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