{
  "$type": "site.standard.document",
  "description": "A novel method of manufacturing a component member of a VGS turbocharger is provided, which method enables, when manufacture of the component member is performed mainly by press working using a die, the press working to be efficiently performed because of various engineering improvements applied…",
  "path": "/patents/1087049",
  "publishedAt": "2004-05-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B21J15/02",
    "AKITA FINE BLANKING CO LTD [JP]"
  ],
  "textContent": "A novel method of manufacturing a component member of a VGS turbocharger is provided, which method enables, when manufacture of the component member is performed mainly by press working using a die, the press working to be efficiently performed because of various engineering improvements applied thereto in accordance with working techniques and a formed shape. The invention is characterized in that: to form receiving holes (25) for rotatably holding adjustable blades in a turbine frame as an example of the component member, preparatory holes (25a) having a diameter equal to or smaller than that of the receiving holes (25) in a finished state are formed and then the receiving holes (25) are finished by pressing a steel ball (B) having a diameter approximately equal to that of the receiving holes (25) in the finished state into each of the preparatory holes (25a) to provide a desired accuracy in hole diameter and a desired surface roughness of inner surfaces thereof; and the steel ball (B) is integrally formed on an distal end of a punch portion (PU).",
  "title": "METHOD OF MANUFACTURING COMPONENT MEMBER IN VGS TYPE TURBO CHARGER AND COMPONENT MEMBER MANUFACTURED BY THE METHOD"
}