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An apparatus and method for machining in confined spaces

一种加工设备、设备的技术，应用在金属加工设备、电动加工设备、制造工具等方向，能够解决很难定位、耗费时间、涡轮机转子彀空间有限等问题

Inactive Publication Date: 2005-04-20
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the pins are stuck, it is difficult and time consuming to remove them using known means such as hammering or mechanical drilling
Part of the difficulty in removing these pins and tabs is that the space between the hubs of a turbine rotor is very limited, so it can be tricky if you can't drill them out
Additionally, because the blades extend around the 360-degree interior of the turbine casing, it is difficult to position cumbersome tools to drill these pins

Method used

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  • An apparatus and method for machining in confined spaces
  • An apparatus and method for machining in confined spaces
  • An apparatus and method for machining in confined spaces

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Embodiment Construction

[0047] Reference will be made here Figure 1 to Figure 4 The detailed descriptions of several embodiments of the disclosed apparatus and methods have been presented by way of example and not limitation.

[0048] EDM

[0049] figure 1 A non-limiting example of the limited space where a small portable ECDM or EDM can be used is shown. Therein is shown a side view of a portion of the rotor 10 of the turbine. In this example, rotor 10 is a steam turbine rotor with L-1 stage 14 and L-0 stage 18. Although figure 1 The space between the two wells of the rotor is shown, but this is just one of many applications where this device is used in limited spaces. Connected to the L-1 stage hub 14 is a disclosed apparatus 22. The disclosed device 22 is attached to the hub 14 by means of electromagnets 26. The electromagnets 26 allow the placement of the device 22 in a variety of orientations relative to the workpiece, as compared to commercial ECDM and EDM tools, which are adapted to dr...

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Abstract

A machining apparatus includes: an electrical discharge machining head assembly; and an electromagnet configured to support the head assembly in a position for machining an area. Methods for machining include: attaching a machining tool to a surface; placing a drill electrode on a workpiece; and drilling the workpiece with the machining tool.

Description

[0001] Apparatus and method for machining in confined spaces technical field [0002] The apparatus disclosed herein relates to a processing apparatus and method for use in confined spaces. More specifically, the apparatus disclosed herein relates to a machining apparatus using electrochemical electrical discharge machining techniques or electrical discharge machining techniques. Background technique [0003] Electrochemical Machining (ECM) and Electrical Discharge Machining (EDM) are two techniques used in metalworking in industry. In EDM, a DC voltage is supplied to the drill electrode and the workpiece is etched by an electric spark formed in the gap between the drill electrode and the workpiece. Dielectric liquid is usually pressed into the gap between the electrode and the workpiece. [0004] In ECM, the drill electrode is placed adjacent to the workpiece and an electrical potential exists between the drill electrode and the workpiece. The electrolyte is forced into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H7/26B23H9/00B23H9/10B23H9/14B23H11/00
CPCB23H7/26B23H7/265B23H9/00B23H9/14
Inventor M·K·-F·李J·M·萨萨特利T·J·菲舍尔D·W·罗伯茨
Owner GENERAL ELECTRIC CO
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