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Nichika Masaki, Norikazu Suzuki, Taro Abe, Wataru Takahashi
Pages
640-641
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Shunya Sugiura, Shunta Hirooka, Masao Nakagawa, Toshiki Hirogaki
Pages
642-643
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Yutaro Nakahara, KAITO TANAKA, REO KITAZAKI, Masao Nakagawa, Toshiki H ...
Pages
644-645
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Ilia RADCHENKO, Norikazu SUZUKI, Hiroyuki SASAHARA
Pages
646-647
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Indirect coolant supply is an environmentally friendly replacement for direct coolant supply (flooding) and an alternative to dry cutting. Indirectly supplied coolant circulates through the internal channels of a cutting tool without entering the cutting zone. The channels are designed to effectively dissipate heat generated at the contact point between the tool and the workpiece. So far, indirect coolant supply has been analyzed primarily under continuous cutting conditions (turning). In this study, the effect of indirect coolant supply on cutting temperature and tool wear was investigated under face milling (intermittent cutting) conditions. A special milling tool and a channel-equipped cutting insert were designed and manufactured. Cutting temperature and tool wear data for indirect coolant supply were obtained experimentally by milling SUS 304 stainless steel. The effectiveness of indirect coolant supply was evaluated by comparing these results with those from dry cutting. Additionally, the influence of indirect coolant supply on cutting temperature and tool wear was compared between intermittent and continuous cutting processes. For intermittent cutting, indirect coolant supply significantly reduced cutting tool temperature and tool wear.
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Takashi Matsumura, Tomoaki Sakamoto, Shoichi Tamura, Kazumasa Kono, Ry ...
Pages
648-649
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Letian BAI, Satoru EGAWA, Gota YAMAGUCHI, Tsubasa TAKAHIRO, Hiroto MOT ...
Pages
650-651
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Katsuhito Yoshinaga, Hideki Shibata
Pages
652-653
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Yutaro Kawana, Ryosuke Ikeda, Burak Sencer, Norikazu Suzuki
Pages
654-655
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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In oscillating milling, in which an oscillating motion is superimposed on the milling feed motion, the turning radius of the cutting edge can be actively controlled to achieve highly efficient machining. In this study, the mechanism of the effect of oscillating motion on chatter stability was clarified in terms of process gain and regeneration effect. Furthermore, a simulator that considers the dynamic characteristics of the machine structure was developed, and quantitative analysis was conducted through process analysis.
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Jinnai Takuma, Yu Takeda, Takeshi Hoshi, Shoko Suyama, Masayuki Sato, ...
Pages
656-657
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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A simple technique for evaluating the grain size distribution of rocks is required to quickly understand the heat storage and dissipation behavior of rocks, which are inexpensive heat storage materials. We developed the grain size distribution evaluation system using an RGB-D camera. The system uses an image segmentation AI model and a shape completion algorithm to estimate the shape of individual rocks in an RGB-D image and obtain their grain size distribution. The accuracy of the estimation of surface area equivalent diameter and volume equivalent diameter distributions of rocks was verified using rocks with known shapes.
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Keita Hiraoka, Makoto Nakano, Genki Takahashi, Hiroshi Masuda
Pages
658-659
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Ken Nishioka, Zhechen Zhu, Satoshi Kanai, Hiroaki Date, Atsushi Konno, ...
Pages
660-661
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Daiki Koyama, Hiroaki Date, Satoshi Kanai
Pages
662-663
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Automated Alignment of Summer and Winter Point Clouds using Road Signs as Ground Control Points
Satoshi Kanai, Risako Yagi, Hiroaki Date, Nao Urushidate, Katsunori Yu ...
Pages
664-665
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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This study develops a technology that automates the volume measurement of roadside snow piles that need to be cleared by taking a video of a vehicle and SfM/MVS. In our previous report, we proposed a method for automatically recognizing road signs that can be used as reference points for aligning point clouds between summer and winter using deep learning and image conditions for the stable reconstruction of snow-covered areas from videos. This report presents the automated processing results of aligning point clouds between summer and winter measurements using the recognized signs as ground reference points.
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kutai ito, satoshi kanai, hiroaki date, yasuhito nina, ryohei honma
Pages
666-667
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Keigo Ando, Hiroaki Date, Satoshi Kanai
Pages
668-669
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Arisa Kobayashi, Tomohiro Mizoguchi
Pages
670-671
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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In this paper, we propose a method to detect building equipment (lighting, air conditioning, etc.) using laser reflection intensity to automatically construct detailed BIM from point clouds of buildings by mobile laser scanners (MLS). First, the effect of scanning distance and incident angle included in the reflection intensity was eliminated based on polynomial approximation, and the reflection intensity value of flat ceilings and walls made of the same material was approached to a constant value. Furthermore, thresholding and morphological processing were performed using the corrected reflection intensity, and it was demonstrated that the method can detect building equipment without omissions.
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Yusei Sakoguchi, Yutaka Ohtake
Pages
672-673
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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SHINICHI SANO, HIROAKI DATE, SATOSHI KANAI
Pages
674-675
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Hironari Kinoshita, Kosei Otani, Hiroshi Masuda
Pages
676-677
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Saki Komoriya, Hiroshi Masuda
Pages
678-679
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Hiroya Yamada, Hiroaki Date, Satoshi Kanai
Pages
680-681
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Yuichi Nakazato
Pages
682-683
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Yusuke Yamauchi, Masato Mizukami, Naohiko Hanazima, Yoshinori Fujihira
Pages
684-685
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Ai Domon, Masato Mizukami, Naohiko HanaJima, Yoshinori Fujihira
Pages
686-687
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Yasufumi Sakaguchi, Satoshi Honda
Pages
688-689
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Ryunosuke Norimatsu, Satoshi Honda
Pages
690-691
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Yuta Okada, Masataka Nishiyama, Yusuke Kanno, Takashi Nisisako
Pages
692-693
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Syunya Takahashi, Kouki Hagiwara, Yuichi Nakazato
Pages
694-695
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Shield machines have been developed to excavate tunnels several meters in diameter, but they are all large in size and have limited applications. Moles, on the other hand, are only a few centimeters long and can dig dozens of meters a day. This study aims to develop a mole-like underground excavation robot using biomimetics technology, and to develop a compact excavation mechanism with a diameter of several centimeters by using soft actuators in the excavation mechanism.
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Hikaru Kyuushiki, Linfeng Jia, Kouta Inazaki, Yuichi Nakazato, Yukinor ...
Pages
696-697
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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This study analyzed the feed force and shaft rotation force in a shaft-like material feeder, and found that they are related to the pressing force.
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Noa Takahashi, Hiroshi Ozeki, Takeharu Irie, Toshihito Sugawara
Pages
698-699
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Analysis result by Weibull distribution function
Akimasa Uno, Hiroshi Ozeki, Noa Takahashi, Hiroki Omura, Niko Kimura
Pages
700-701
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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The Lundberg-Palmgren life formula, which is widely used in the design of rolling machine elements, is generally used for normal sized rolling bearings, but it is not applicable to small bearings in many cases, making it difficult to accurately estimate the life at the design stage. In this experiment, life is estimated from the vibration frequency generated by small bearings under radial load, and the L10 life obtained by Weibull distribution is compared with the theoretical life obtained from the Lundberg-Palmgren life calculation formula.
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Shoui Onozeki, Daiki Kikuchi, Masao Nakagawa, Toshiki Hirogaki, Shota ...
Pages
702-703
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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The conventional accuracy management of hypoid gear tooth surfaces relies on an empirical method using marking compounds, which depends on the observer’s skill. This study aims to propose a quantitative evaluation method using infrared analysis. By controlling lubricant distribution with an airbrush, we investigated whether temperature rise trends on the tooth surface could be observed under varying oil quantities. As a result, consistent oil quantities were maintained in experiments, enabling the observation of temperature rise trends based on oil amount differences.
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Masaya Mitsuishi, Shinnosuke Yuba, Masao Nakagawa, Toshiki Hirogaki
Pages
704-705
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Fumiya Sato, Kenta Seki, Keita Fukushima
Pages
706-707
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Couplings are an important component in the modeling of mechanical systems, where accurate measurement of the torsional stiffness can contribute to modeling accuracy. However, the torsional stiffness is difficult to measure by the coupling component tests due to the effect of the shaft to be fastened. In this study, the torsional stiffness of the coupling is measured through experiments and analyses considering the shaft to be fastened. The validity of the results is evaluated using the target mechanical systems.
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WUGUANG GUO, Kanshin Yatsuzuka, Mizuki Takeda, Kaiji Sato
Pages
708-709
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Takumi Odashima, Mizuki Takeda, Kaiji Satou, Kaoru Akamatsu, Yuuta Nom ...
Pages
710
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Kaiji Sato, Mizuki Takeda
Pages
711-712
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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In recent years, researches and applications have been progressing in which physical models expressed in cyber space can be used to operate actual machines, and the importance of technology to easily and quickly generate precise physical models is increasing. In this paper, we propose a method to easily generate a high-precision simulator using a learning controller, and verify its effectiveness by comparing it with experimental results.
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Suppression multiple vibration mode and robustness
Ryuta Sato, Yume Dobashi
Pages
713-714
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Tianyu Zhou, Shuzo Masui, Masaki Michihata, Satoru Takahashi
Pages
715-716
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Ren Nakata, Satoshi Kanai, Hiroaki Date, Hideyoshi Takashima, Tetsufum ...
Pages
717-718
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Daiju Yamaguchi, Satoshi Kanai, Hiroaki Date, Tetsufumi Taichi, Hideyo ...
Pages
719-720
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Current status and problems of tool information model
Fumiki Tanaka, Sota Hosokawa, Masahiko Onosato
Pages
721-722
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Validation of semantic representation of geometric tolerances
Arata Kawano, Fumiki Tanaka, Masahiko Onosato
Pages
723-724
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Modeling a tool information model for Indexable Tools
Sota Hosokawa, Humiki Tanaka, Masahiko Onosato
Pages
725-726
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Daiju Hoya, Naoki Asakawa, Keigo Takasugi, Borja de la Maza
Pages
727-728
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Modeling of bending operations
ZEFENG LIU, Naoki Asakawa, Keitaro Kimura, Keigo Takasugi
Pages
729-730
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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This study aims to automate the bending operations in the brake press process using industrial robots. The existing system faces challenges such as decreased teaching efficiency and limitations in the parts it can handle, leading to insufficient automation and optimization. This research focuses on improving the system by utilizing industrial robots to enhance efficiency. It reports on the development of CAM software that generates robotic hand positions and motion data based on the dimensions of the workpieces, and automatically creates motion programs.
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Xianliang Pan, Tetsufumi Taichi, Hideyoshi Takashima, Hiroaki Date, Sa ...
Pages
731-732
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Hidetake Tanaka
Pages
733-734
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Kaito Tanaka, Zhiming Yang, Masao Nakagawa, Toshiki Hirogaki
Pages
735-736
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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Mechanism design and verification of prototype models
Liyang Zhu, Yasunori Kobayashi, Emir Yilmaz, Hidetake Tanaka
Pages
737-738
Published: March 05, 2025
Released on J-STAGE: September 05, 2025
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The authors have proposed inclined planetary machining for drilling CFRP, which can produce higher-quality holes than conventional drills and helical machining. A portable inclined planetary machining device has been developed. Conventional inclined planetary machining devices were designed to incline the entire tool spindle and required manual adjustment. In this study, the tool tilting mechanism was automated, and a structure was created in which only the tool part could be tilted, thereby reducing vibration. The device design and mechanism were verified in this report.
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