Bearing assembly for a pipe machining apparatus

Patent metadata

Field	Value
Publication number	US-9638245-B2
Application number	US-201313796211-A
Country	US
Kind code	B2
Filing date	Mar 12, 2013
Priority date	Oct 4, 2012
Publication date	May 2, 2017
Grant date	May 2, 2017

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

The invention claimed is:

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;
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 is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame; 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 is rotatable about a second roller bearing axis, and wherein the second roller bearing is adjustable to move the second roller bearing axis relative to the frame;
wherein the race includes an interior bearing surface and an exterior bearing surface, the interior bearing surface includes an indentation and the exterior bearing surface is substantially flat, and wherein the first roller includes a substantially flat outer part adapted to engage the exterior bearing surface and the second roller includes two angled engagement portions positionable in the indentation and adapted to engage the interior bearing surface.

2. The pipe machining apparatus of claim 1 , wherein the second shaft includes an eccentric portion and the second roller is coupled to the second shaft about the eccentric portion, and wherein rotation of the second shaft moves the second roller bearing axis relative to the frame.

3. The pipe machining apparatus of claim 1 , wherein the first roller bearing is one of a plurality of fixed roller bearings and the second roller bearing is one of a plurality of adjustable roller bearings, wherein each of the fixed roller bearings includes a first roller bearing axis adapted to remain substantially fixed relative to the frame and each of the adjustable roller bearings includes a second roller bearing axis movable relative to the frame.

4. The pipe machining apparatus of claim 3 , wherein the plurality of fixed roller bearings and the plurality of adjustable roller bearings alternate around the race.

5. 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.

6. The pipe machining apparatus of claim 5 , wherein the exterior bearing surface of the race defines a pair of recesses aligned with the two angled engagement portions of the second roller to inhibit the two angled engagement portions from engaging the exterior bearing surface.

7. 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.

8. The pipe machining apparatus of claim 1 , wherein the frame defines a recess therein and the second shaft includes a tool engagement portion on an end thereof, wherein the tool engagement portion of the second shaft is positioned in the recess, the pipe machining apparatus further comprising a cap positionable in the recess to cover the recess.

Assignees

• Illinois Tool Works

Inventors

• Coakley Roy C

Classifications

• B23B5/162

  with an internal clamping device · CPC title

• B23B2260/008

  Bearings · CPC title

• B23B3/265

  Surfacing or grooving flanges · CPC title

• B23B5/163

  with an external clamping device · CPC title

• B23D21/04 Primary

  Tube-severing machines with rotating tool-carrier · CPC title