公开(公告)号：JP2000064806A

公开(公告)日：2000-02-29

申请号：JP7867899

申请日：1999-03-23

Applicant: ABB RESEARCH LTD

Inventor： BLOECHLINGER MICHAEL ,  LUKETIC IVAN ,  SEMMLER KLAUS ,  WILFERT GUENTER DR

IPC: B23K26/00 ,  B23K26/38 ,  F01D5/18 ,  F01D9/02

Abstract: PROBLEM TO BE SOLVED: To form a cooling hole regardless of a manufacturing error of wall thickness and make it applicable to all wall thickness by guiding boring radiation in such a way as to be maintained almost in a range of selected cross section in a supply part area. SOLUTION: A through hole with a slightly smaller diameter compared to a cylindrical supply part is bored in a wall. A diffuser part is cut at cutting speed conformed to the depth of each hole by laser radiation 60. In this case, the laser radiation 60 is converged by a lens 62 and guided along an outline 64 to be cut, and finally the cylindrical part is cut to the final outline. Laser radiation is controlled by a CNC machine through a CAD/CAM interface. A cooling chamber side inlet edge area of a cooling hole 20 is additionally cut in a laser boring process. An area of constituting the diffuser part can therefore be reduced.

公开(公告)号：CA2266137A1

公开(公告)日：1999-09-23

申请号：CA2266137

申请日：1999-03-18

Applicant: ABB RESEARCH LTD

Inventor： LUKETIC IVAN ,  BLOECHLINGER MICHAEL ,  SEMMLER KLAUS ,  WILFERT GUENTER

IPC: B23K26/00 ,  B23K26/38 ,  F01D5/18 ,  F01D9/02 ,  F02C7/18

Abstract: In a method of forming a cooling bore in a wall of a workpiece, the configuration of a feed section and a diffuser section is selected, a throughbore is produced with a cross-sectional area within the cross-sectional area of the feed section, and the diffuser section is cut out by a beam- or jet-drilling method in such a way that the drilling beam or jet in the region of the feed section remains essentially within the cross-sectional area of the latter.