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US 2003/0156913 A1Published application
Apparatus for forming threads in a pipe end
OwnerRonnie M. Willisinventor
Life of this patent
Estimating the term…
Abstract
A pipe end thread cutting apparatus includes three milling cutter heads mounted on a support wall which is vertically movable with the heads mounted symmetrically about a central axis in use; a gripping chuck for holding a pipe end is mounted on a rotatable shaft carried on a support member which is movable toward and away from the milling cutter heads and motor drives are provided for each cutter head.
Claims12
An apparatus for cutting threads in a pipe end, the apparatus comprising:
- a thread milling head including a plurality of milling cutters, each milling cutter being mounted for rotation on an associated shaft and including at least one milling cutter, the milling cutters being constructed and arranged about a central axis to receive the end of a pipe disposed along the central axis, such that the cutters can cut threads in a periphery of the pipe end,
- drive means for causing simultaneous rotation of the milling cutters about their associated shafts, and
- drive means for causing rotation of the thread milling head about the central axis.
. A thread milling apparatus comprising:
- a milling head portion including a plurality of rotatably mounted thread milling cutters arranged about a central axis, and at least one first drive source for driving each said thread milling cutter in rotation;
- and
- a pipe holding portion constructed and arranged to hold a pipe along the central axis such that an end of the pipe is disposed in cooperation with said thread milling cutters, and including a second drive source for rotating the pipe relative to and coaxially with the central axis;
- wherein each said thread milling cutter is disposed on an axis located at an angle relative to the central axis.
1 more element
Dependencies are inferred from the claim text.