Title:
METHOD FOR MANUFACTURING CENTRIFUGAL ROTARY MACHINE AND METHOD FOR MANUFACTURING IMPELLER THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/042653
Kind Code:
A1
Abstract:
In the present invention, when manufacturing a closed-type impeller from a single block (50) a rough-cutting step is implemented, in which a rough-cutting tool is used to cut a flow path region (51) in the block (50), and a remnant-cutting step is implemented, in which a remnant-cutting tool (60c) is used to cut a cutting remnant (55) from the rough-cutting step. The remnant-cutting tool (60c) has a tool main body (61c) on the outer periphery of which a blade is formed, and a handle (65c) to the front end of which the tool main body (61c) is secured. The maximum outer diameter of the tool main body (61c) is greater than the minimum outer diameter of the handle (65c). In addition, the tool main body (61c) has a rear blade (62) oriented in a direction that includes a tool rear side (Dtb) component.
Inventors:
TAKAGI HIROKI (JP)
TAZAWA YOSHIKI (JP)
KAWAI YUSUKE (JP)
TAZAWA YOSHIKI (JP)
KAWAI YUSUKE (JP)
Application Number:
PCT/JP2016/075979
Publication Date:
March 08, 2018
Filing Date:
September 05, 2016
Export Citation:
Assignee:
MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)
International Classes:
F04D29/28; F04D29/30
Foreign References:
| JP2015206368A | 2015-11-19 | |||
| JP2010269416A | 2010-12-02 | |||
| JP2015226953A | 2015-12-17 | |||
| JP2004009158A | 2004-01-15 | |||
| JP2008509012A | 2008-03-27 | |||
| US2396488A | 1946-03-12 | |||
| JP2014040838A | 2014-03-06 |
Other References:
See also references of EP 3421809A4
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
Download PDF: