System and method for modifying a rotor

Patent metadata

Field	Value
Publication number	US-9248528-B2
Application number	US-201313847660-A
Country	US
Kind code	B2
Filing date	Mar 20, 2013
Priority date	Aug 30, 2011
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A system for modifying a slot in a rotor includes a drill, a clamp connected to the drill and configured to engage with an interior surface of the slot, and means for supporting the drill from a stationary platform adjacent to the rotor. A method for modifying a slot in a rotor includes connecting a coupling to a stationary platform adjacent to the rotor, connecting a drill to the coupling, and locating the drill proximate to the slot. The method further includes inserting a clamp into the slot, engaging the clamp with an interior surface of the slot, and operating the drill to create a cavity in the slot.

First claim

What is claimed is:

1. A method for modifying a slot in a rotor, comprising:
a. installing stationary jacks between sections of a casing at least partially surrounding the rotor to create an opening and then connecting a coupling to the rotor;
b. connecting a drill to said coupling;
c. locating said drill proximate to the slot;
d. inserting a clamp into the slot;
e. engaging said clamp with an interior surface of the slot; and
f. operating said drill to create a cavity in the slot.

2. The method as in claim 1 , further comprising releasably connecting said coupling to said casing.

3. The method as in claim 1 , further comprising biasing at least a portion of said coupling away from the rotor.

4. The method as in claim 1 , further comprising sliding said drill toward the rotor.

5. The method as in claim 1 , further comprising pivoting said drill away from the rotor.

6. The method as in claim 1 , further comprising releasably clamping said drill to said coupling.

7. A method for modifying a slot in a rotor, comprising:
a. installing stationary jacks between sections of a casing at least partially surrounding the rotor to create an opening and then supporting a drill from the casing adjacent to the rotor;
b. extending said drill toward the slot in the rotor;
c. clamping at least a portion of a base inside the slot;
d. sliding said drill along said base into the slot;
e. penetrating the slot with said drill;
f. sliding said drill along said base out of the slot; and
g. retracting said drill away from the slot in the rotor.

8. The method as in claim 7 , further comprising pivotally connecting said drill to the casing adjacent to the rotor.

9. The method as in claim 7 , further comprising biasing said drill with respect to the casing adjacent to the rotor.

Assignees

• Gen Electric

Inventors

• Holmes James Bradford
• Herbold John William
• Clark Jason Matthew

Classifications

• Y10T29/53983

  Work-supported apparatus · CPC title

• B23B41/00

  Boring or drilling machines or devices specially adapted for particular work {(surgical drilling machines A61B17/16)}; Accessories specially adapted therefor · CPC title

• Y10T408/96

  Miscellaneous · CPC title

• Y10T29/53974

  having means to permit support movement while work is thereon · CPC title

• B23B47/281

  Jigs for drilling cylindrical parts · CPC title