Bearing assembly for a pipe machining apparatus

Patent metadata

Field	Value
Publication number	US-2017191525-A1
Application number	US-201715468365-A
Country	US
Kind code	A1
Filing date	Mar 24, 2017
Priority date	Oct 4, 2012
Publication date	Jul 6, 2017
Grant date	—

Abstract

Pipe machining apparatuses and bearing assemblies are provided. In one aspect, a pipe machining apparatus includes a frame, a tool carrier, a first roller bearing and a second roller bearing. The tool carrier is coupled to and movable relative to the frame and defines a race therein. The first roller bearing includes a first shaft and a first roller rotatably coupled to the first shaft. The first roller is at least partially positioned in the race and is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame. The second roller bearing includes a second shaft and a second roller rotatably coupled to the second shaft. The second roller is at least partially positioned in the race and is rotatable about a second roller bearing axis. The second roller bearing is adjustable to move the second roller bearing axis relative to the frame.

First claim

1 . A pipe machining apparatus comprising:
a frame; a tool carrier coupled to and movable relative to the frame, the tool carrier defining a race therein, wherein the race includes
an interior bearing surface including an indentation, and
an exterior bearing surface that is substantially flat;
a first roller bearing including a first shaft and a first roller rotatably coupled to the first shaft, wherein the first roller is at least partially positioned in the race and engages the exterior bearing surface; and a second roller bearing including a second shaft and a second roller rotatably coupled to the second shaft, wherein the second roller is at least partially positioned in the race and engages the interior bearing surface in the indentation.

2 . The pipe machining apparatus of claim 1 , wherein the first roller includes a substantially flat outer part adapted to engage the exterior bearing surface along a single line of contact, and wherein the second roller includes two angled engagement portions positionable in the indentation and adapted to engage the interior bearing surface along two lines of contact.

3 . The pipe machining apparatus of claim 2 , wherein the single line of contact between the first roller and the exterior bearing surface is substantially parallel to a rotational axis of the tool carrier, and wherein the two lines of contact between the second roller and the interior bearing surface are transverse to the rotational axis of the tool carrier.

4 . The pipe machining apparatus of claim 1 , wherein the first roller engages the exterior bearing surface and not the interior bearing surface, and wherein the second roller engages the interior bearing surface and not the exterior bearing surface.

5 . The pipe machining apparatus of claim 1 , wherein the first roller rotates about a first roller axis and the second roller rotates about a second roller axis, and wherein the first roller axis remains substantially fixed relative to the frame and the second roller axis is movable relative to the frame.

6 . The pipe machining apparatus of claim 1 , wherein the pipe machining apparatus is a split frame pipe machining apparatus including two sections adapted to couple to one another around a pipe, wherein a first of the two sections includes a first portion of the frame and a first portion of the tool carrier and a second of the two sections includes a second portion of the frame and a second portion of the tool carrier.

7 . A bearing assembly for a pipe machining apparatus, the bearing assembly comprising:
a plurality of fixed roller bearings with each fixed roller bearing including a first shaft and a first roller rotatably coupled to the first shaft, wherein the first roller is rotatable about a first roller bearing axis adapted to remain substantially fixed; and a plurality of adjustable roller bearings with each adjustable roller bearing including a second shaft and a second roller rotatably coupled to the second shaft, wherein the second roller is rotatable about a second roller bearing axis adapted to move; wherein the plurality of fixed roller bearings and the plurality of adjustable roller bearings alternate relative to each other.

8 . The bearing assembly of claim 7 , wherein each of the second shafts of the plurality of adjustable roller bearings includes an eccentric portion about which the second roller is coupled, and wherein each of the second shafts is rotatable to move the second roller bearing axis.

9 . The bearing assembly of claim 8 , wherein each of the second shafts of the plurality of adjustable roller bearings includes a tool engagement portion on an end thereof to facilitate rotation of the second shafts.

10 . The bearing assembly of claim 7 , wherein each of the first rollers includes a first inner hub and a first outer part rotatable about the first inner hub with the first outer part including a substantially flat engagement surface, and wherein each of the second rollers includes a second inner hub and a second outer part rotatable about the second inner hub with the second outer part including two angled engagement surfaces.

11 . The bearing assembly of claim 10 , wherein the substantially flat engagement surfaces of the first rollers are substantially parallel to a rotational axis of the pipe machining apparatus, and wherein the two angled engagement surfaces of the second rollers are transverse to the rotational axis of the pipe machining apparatus.

Assignees

• Illinois Tool Works

Inventors

• Coakley Roy C

Classifications

• Y10T83/68

  Entirely work supported · CPC title

• B23B3/265

  Surfacing or grooving flanges · CPC title

• B23B2260/008

  Bearings · CPC title

• B23Q9/02

  for securing machines or apparatus to workpieces, or other parts, of particular shape, e.g. to beams of particular cross-section · CPC title

• B23Q9/0021

  the tool being guided in a circular path · CPC title