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Volume 24, Issue 283
Displaying 1-10 of 10 articles from this issue
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Kenzi SIRAISI, Koyu KAKAZU1958 Volume 24 Issue 283 Pages 449-453
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSIn this report, various kinds of cutting fluids on the market have been evaluated from the view points of cost per unit metal removal, surface roughness, power consumption, antirusting ability, etc., when such steels as SK5 and S25C were machined. Thus, cutting fluids suitable for the machining operations in factories were selected.View full abstractDownload PDF (817K) -
Toshio SATA1958 Volume 24 Issue 283 Pages 453-460
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSExperimental procedures for rapid tool-life tests by means of radioactive cutting tools are presented in this paper. These procedures are as follows; carbide tips are activated by neutron irradiation in atomic pile, cutting tests are carried out in a short time using these tools, and then activity of chips is measured by G-M counter. Use of irradiation shield of lead and aoequate handling tools assures safety for heaith of the operators. As β ray of wear debris of tips is mostly absorbed in chips, observed values of activity on both faces of chips show rate of crating wear and flank wear of cutting tools respectively. Lastly proceeding of crating wear and flank wear is discussed, and machinability of high carbon steel, Cr-Mo steel and stainless steel is compared.View full abstractDownload PDF (1808K) -
On Superfinishing TemperatureSeiki MATSUI1958 Volume 24 Issue 283 Pages 460-465
Published: September 05, 1958
Released on J-STAGE: February 15, 2010
JOURNAL FREE ACCESSIn this paper, the author presented analytical formulas for the rubbing temperature and the average surface temperature in flat superfinishing.
Further, he measured the average surface temperature by the Cu-Constantan thermocouple method and the gloss by the reflection method and discussed the mirror finishing mechanism in superfinishing process.
Consequently, he verified that the following conditions are necessary to obtain mirror finished surface.
(1) The superfinishing resistance must be the friction term only.
(2) The high rubbing temperature must be taken.View full abstractDownload PDF (1048K) -
Hisashi WADA1958 Volume 24 Issue 283 Pages 466-469
Published: September 05, 1958
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSBy an ordinary type microinterferometer, the transmitted interference fringe can be observed by the transparent replica from the surface to be measured.
These experiments are mainly carried out on the case that the liquid is placed between the replica surface and the reference mirror.
In this case, the fringe spacing is accepted to be equivalent to λ/2 (n1-n2), (λ is the wave length of the monochromatic light employed, n1 the refractive index of the replica, and n2 the refractive index of the liquid employed), so that the measurement of surfaces rougher than those measured by an ordinary microinterferometer is possible. Some examples observed by this method are indicated and its applications are described in this paper.View full abstractDownload PDF (1226K) -
-II. In the Case of Three-Dimensional Cutting-Keiji OKUSHIMA, Katsundo HITOMI1958 Volume 24 Issue 283 Pages 470-475
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSAs a consequence of consideration of the situation where the side-flow of metai appears in three-dimensional cutting such as lathe operation, the authors have been led to conclude that the side-flow revealed at the machined surface makes the practical longitudinal roughness on machined surface always larger than its theoretical value depending on the tool geometry and the feed even when the influences of built-up edge and vibration are neglected, and that, on the other hand, the side-flow revealed at the workpiece surface must be a cause of tne groove wear on flank of cutting tool.
Moreover, it was known that the practical roughness of machined surface becomes better by using the cutting tool with smaller end-cutting-edge angle, and that Kolesov type tool with a cutting edge parallel to the centre-line of workpiece is fairly effective to raroduce good machined surface over the wide range of feed.View full abstractDownload PDF (1321K) -
[in Japanese]1958 Volume 24 Issue 283 Pages 476
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESS -
[in Japanese]1958 Volume 24 Issue 283 Pages 477-498
Published: September 05, 1958
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESS -
[in Japanese]1958 Volume 24 Issue 283 Pages 499-513
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESS -
[in Japanese]1958 Volume 24 Issue 283 Pages 514-527
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESS -
1958 Volume 24 Issue 283 Pages 528-529
Published: September 05, 1958
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSDownload PDF (546K)
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