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Volume 39, Issue 464
Displaying 1-15 of 15 articles from this issue
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[in Japanese]1973 Volume 39 Issue 464 Pages 871-876
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 877-887
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 888-894
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 895-900
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 901-909
Published: September 05, 1973
Released on J-STAGE: February 16, 2010
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[in Japanese]1973 Volume 39 Issue 464 Pages 910-916
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 917-921
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 922-928
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 929-934
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese], [in Japanese]1973 Volume 39 Issue 464 Pages 935-940
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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[in Japanese]1973 Volume 39 Issue 464 Pages 941-948
Published: September 05, 1973
Released on J-STAGE: February 16, 2010
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[in Japanese]1973 Volume 39 Issue 464 Pages 949-954
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
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Fundamental Study of Interrupted Cutting (1st report)Yoshinobu TANAKA, Naoya IKAWA, Yasushi INAMI1973 Volume 39 Issue 464 Pages 955-960
Published: September 05, 1973
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSA design principle is proposed for the dynamometer which is equipped with an acceleration pick-up to measure the transient cutting force at the initial engagement of the tool with the workpiece (or tool impact) in interrupted cutting. The new dynamometer fitted with a miniature acceleration pick-up of 120 kHz natural frequency is proved to be capable of measur-ing the transient cutting force with a rise time of about 20 μs. on the pendulum cutting tester which was specially designed to analyse the transient phenomena at the tool impact. Using the dynamometer on the cutting tester as above, it is shown that there is no appreciable peak in the cutting force at the initial stage of the tool engagement, and that the transient vibration of the tool is strongly affected by the tool impact the intensity of which may be described by the reciprocal of the rise time of the transient cutting force.View full abstractDownload PDF (7741K) -
Crystallographic Study of ScratchingHideaki KAWABE, Akira OHTSUKA, Masaharu TAKAMURA, Tomoharu YAMADA1973 Volume 39 Issue 464 Pages 961-965
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSTo clarify the formation mechanism of work-deformed layer, the investigations have been made on (001) Cu single crystal surface scratched with diamond cones. In this report the surface characteristics and the deformed substructures made by the above deformation were studied from the crystallographic point of view, using X-ray micro-beam technique and transmission electron microscopes. It was found that the scratch-groove was formed b y the slip deformation due to the indentation and by the crystallographic rotation due to the progression of the indenter, and that the scratch-deformed surface layer was formed by the superposition of these dislocation structures induced during the formation process of the scratch-groove.View full abstractDownload PDF (9058K) -
Takahiro SHIRAKASHI, Eiji USUI1973 Volume 39 Issue 464 Pages 966-972
Published: September 05, 1973
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSInasmuch as the friction on tool face in metal machining is caused by the rub with the chip which has been plastically strained and heated in the shear zone, the strength of chip material along tool face during machining must be essential for better understanding of the friction characteristics.
By introducing the maximum shear stress (τe) of the chip along tool face during machining, which is affected by the strain, strain rate, strain rate history and temperature, the following non-dimensional expression of the friction characteristics is obtained
τt/τe=1-exp(-Kσt/τe)
where τt, σt are frictional and normal stresses on tool face and K is a constant which is uniquely determined by the combination of tool and work materials.
In two dimensional dry cutting of a-brass with a variation of tool material, rake angle, cutting speed and depth of cut, the above equation is verified and K is determined as a single value for tool material, however, the value of K for cutting aluminum shows a little tendency of temperature dependence.View full abstractDownload PDF (2907K)
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