Apparatus for fatigue testing bulge tool having WH-type skeleton

Patent metadata

Field	Value
Publication number	US-11719609-B2
Application number	US-201817054337-A
Country	US
Kind code	B2
Filing date	Jun 4, 2018
Priority date	May 8, 2018
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

Provided is an apparatus for fatigue testing a bulge tool having a WH-type skeleton, the apparatus including: a fixing bracket having tool holes penetrated through opposite sides thereof; a tool housing coupled to the tool hole of the fixing bracket and having the bulge tool inserted and installed therein; a moving rail installed at one side of the fixing bracket in a lengthwise direction of the tool housing and providing a reciprocating movement path facing the tool housing; a moving bracket reciprocating along the moving rail; a pusher protrudingly installed from the moving bracket toward the tool housing and moving in and out of the bulge tool; a measurement means installed between the pusher and the moving bracket, measuring a load applied to the bulge tool; and a drive means for generating power reciprocating the moving bracket on the moving rail.

First claim

The invention claimed is:

1. An apparatus for fatigue testing a bulge tool having a WH-type skeleton, the apparatus comprising:
a fixing bracket having tool holes penetrated through opposite sides thereof;
a tool housing coupled to the tool hole of the fixing bracket and having the bulge tool inserted and installed therein so as to expose a bulge portion of the bulge tool through one side thereof;
a moving rail installed at one side of the fixing bracket in a lengthwise direction of the tool housing and providing a reciprocating movement path toward the tool housing;
a moving bracket reciprocating along the moving rail;
a pusher protrudingly installed from the moving bracket toward the tool housing and, moving in and out of the bulge tool by the reciprocating movement of the moving bracket;
a measurement means installed between the pusher and the moving bracket, for measuring a load applied to the bulge tool while the pusher moves in and out of the bulge tool; and
a drive means for generating power for reciprocating the moving bracket on the moving rail.

2. The apparatus of claim 1 , wherein a plug is fastened to a front end portion of the tool housing to prevent the bulge tool inserted in the tool housing from being separated from the tool housing, and
a washer is interposed between the plug and the tool housing to allow a distance between the plug and the tool housing to be changeable.

3. The apparatus of claim 1 , further comprising:
a guide frame installed in a lengthwise direction of the moving rail on one side of the moving rail;
a sensor installed on the guide frame to detect a position of the moving bracket; and
a controller controlling the power of the drive means according to a detection of the position of the moving bracket by the sensor.

4. An apparatus for fatigue testing a bulge tool having a WH-type skeleton, the apparatus comprising:
a fixing bracket having tool holes penetrated through opposite sides thereof;
a moving rail installed at one side of the fixing bracket and providing a reciprocating movement path toward the fixing bracket;
a moving bracket reciprocating in along the moving rail;
a bulge tool prototype inserted through the tool hole of the fixing bracket and having slots located on an opposite side of the moving rail;
a taper pin exposed to the moving rail side by passing through the inner side of the bulge tool prototype through the slots of the bulge tool prototype;
a connection means connecting the taper pin exposed to the moving rail side and the moving bracket;
a measurement means installed between the connection means and the moving bracket and measuring a load applied to the bulge tool prototype by the taper pin; and
a drive means for generating power for reciprocating the moving bracket on the moving rail.

5. The apparatus of claim 4 , wherein the connection means comprises:
a tool adapter screwed into the bulge tool prototype exposed to the moving rail side, and inserted into the tool hole to fasten the bulge tool prototype to the fixing bracket; and
a taper pin adapter fastening the taper pin exposed to the moving rail side to the measurement means.

6. The apparatus of claim 4 , further comprising:
a guide frame installed in a lengthwise direction of the moving rail on one side of the moving rail;
a sensor installed on the guide frame to detect a position of the moving bracket; and
a controller controlling the power of the drive means according to a detection of the position of the moving bracket by the sensor.

Assignees

• Kepco Nuclear Fuel Co Ltd

Inventors

• Son Se Ick
• Kim In Kyu
• Park Sung Jun
• Lee Je Won
• Sim Young Duk

Classifications

• G01N3/32 Primary

  by applying repeated or pulsating forces · CPC title

• G01B11/002

  for measuring two or more coordinates · CPC title

• G01N3/06

  Special adaptations of indicating or recording means · CPC title

• G21C3/334

  Assembling {, maintenance or repair of} the bundles {(assembling, maintenance or repair of other reactor components G21C19/207)} · CPC title

• G01N2203/0005

  Repeated or cyclic · CPC title