Title:
VGSタイプターボチャージャにおける排気ガイドアッセンブリに適用される可変翼の軸部の転造方法
Document Type and Number:
Japanese Patent JP4065114
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a new form-rolling method in which a working condition for improving the productivity as much as possible can be set very easily while maintaining the desired form-rolling property when form rolling a shaft part of a variable blade built in a VGS type turbocharger. SOLUTION: A shaft part forming part 12a of a blank work W for the variable blade 1 is form-rolled into the desired diameter. When selecting the number of revolution R of a form-rolling roller and the feed speed V for bringing a set of form-rolling rollers 61 close to each other, the working condition is set in an area AR surrounded by a locus showing the relationship between the number of revolution R and the form-rolling property P of the form-rolling roller when the feed speed V of the form-rolling roller is set to the critical minimum value Vmin, the line with the number of rotation R of the form-rolling roller being the critical maximum value Rmax, and the line with the degree of the form-rolling property P being the critical minimum value Pmin on the graph with the number of rotation R of the form-rolling roller and the degree of the form-rolling property P different from each other.
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Inventors:
Shinjiro Oishi
Application Number:
JP2001235704A
Publication Date:
March 19, 2008
Filing Date:
August 03, 2001
Export Citation:
Assignee:
Akita Fine Blanking Co., Ltd.
International Classes:
B21H7/16; F02B39/00; F02B37/24
Domestic Patent References:
| JP2000301283A | ||||
| JP3110035A | ||||
| JP1258833A |
Attorney, Agent or Firm:
Takahiko Higashiyama