Methods for automated application of hardfacing material to drill bits
US8969754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2013 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | May 28, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1085
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Methods for depositing hardfacing material on portions of drill bits comprise providing a vertically oriented plasma transfer arc torch secured to a positioner having controllable movement in a substantially vertical plane. A rolling cutter is secured to a chuck mounted on an articulated arm of a robot. A surface of a tooth of the rolling cutter is positioned in a substantially perpendicular relationship beneath the torch. The torch is oscillated along a substantially horizontal axis. The rolling cutter is moved with the articulated arm of the robot in a plane beneath the oscillating torch. A hardfacing material is deposited on the tooth of the rolling cutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.