Crash resistant trip for a pipe machining apparatus

Patent metadata

Field	Value
Publication number	US-10478900-B2
Application number	US-201816157064-A
Country	US
Kind code	B2
Filing date	Oct 10, 2018
Priority date	Aug 12, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A pipe machining apparatus includes a frame, a tool support, an advancement device, and an advancement member. The tool support is coupled to and movable relative to the frame. The tool support is adapted to support a tool and move the tool in a direction toward a pipe at an increment. The advancement device includes an advancement projection fixedly attached to the frame. The advancement projection includes a contact-surface. The advancement member is coupled to the tool support. Upon the advancement member contacting the contact-surface of the advancement projection the advancement member is adapted to advance the tool towards the pipe at the increment. The contact-surface of the advancement projection is shaped to always be in a non-perpendicular contact position with the advancement member.

First claim

The invention claimed is:

1. A method of operating a pipe machining apparatus, the method comprising:
fixedly coupling a frame of the pipe machining apparatus to a pipe;
moving a tool support relative to the frame, wherein the tool support is moveably coupled to the frame;
advancing a tool coupled to the tool support toward the pipe at an increment due to an advancement member, coupled to the tool support, contacting a first linear contact-surface of a first advancement projection fixedly attached to the frame; and
advancing the tool coupled to the tool support toward the pipe at the increment due to the advancement member contacting a second linear contact-surface of a second advancement projection fixedly attached to the frame.

2. The method of claim 1 further comprising moving the first and second advancement projections into and out of a path of the advancement member.

3. The method of claim 1 wherein the advancement member comprises a star.

4. The method of claim 1 wherein the advancement member comprises a star and the first and second advancement projections each respectively comprise a semi-circle.

5. The method of claim 1 further comprising the advancement member rotating upon contact with the first linear contact-surface of the first advancement projection and upon contact with the second linear contact-surface of the second advancement project.

6. The method of claim 5 further comprising the rotation of the advancement member causing a worm gear, a drive gear, and a feed screw to rotate thereby advancing the tool towards the pipe at the increment.

7. A method of operating a pipe machining apparatus, the method comprising:
fixedly coupling a frame of the pipe machining apparatus to a pipe;
moving a tool support relative to the frame, wherein the tool support is moveably coupled to the frame;
advancing a tool coupled to the tool support toward the pipe at an increment due to an advancement member, coupled to the tool support, contacting a linear contact-surface of an advancement projection fixedly attached to the frame; and
moving the advancement projection into and out of a path of the advancement member.

8. The method of claim 7 wherein the advancement member comprises a star.

9. The method of claim 7 wherein the advancement member comprises a star and the advancement projection comprises a semi-circle.

10. The method of claim 7 further comprising the advancement member rotating upon contact with the linear contact-surface of the advancement projection.

11. The method of claim 10 wherein the advancement member rotating upon contact with the linear contact-surface of the advancement projection causes a worm gear, a drive gear, and a feed screw to rotate thereby advancing the tool towards the pipe at the increment.

Assignees

• Illinois Tool Works

Inventors

• Coakley Roy C

Classifications

• B23Q9/0021

  the tool being guided in a circular path · CPC title

• B23B5/163 Primary

  with an external clamping device · CPC title

• B23B2260/02

  Cams · CPC title

• B23B2215/72

  Tubes, pipes · CPC title

• B23B1/00

  Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods · CPC title