Accès ouvert
2025
article
OpenAlex
Kazuki Kaneko, Hiroto Takayasu, Atsuya Suzuki, Hiroyuki Kodama
• Proposes a unified 2D-polygon–based geometric framework that integrates tool path generation, machinability assessment, material-removal simulation, and cutting-force prediction. • Three-dimensional geometries are represented as aggregates of orthogonal 2D polygon sets. • Develops a convolutional offsetting method that performs 3D inflation and …
jp
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Accès ouvert
2025
article
OpenAlex
Taichi Fujimoto, Hiroyuki Kodama, Kazuhito Ohashi
Grinding is widely used for finishing components with journal and thrust surfaces, such as crankshafts. Side-plunge grinding enables the simultaneous finishing of thrust and cylindrical surfaces in a single plunge. However, compared to cylindrical grinding, it involves a larger contact area between …
jp
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Accès ouvert
2025
article
OpenAlex
Motoki Kuida, Hiroyuki Kodama, Kazuhito Ohashi
Grinding is used to finish thrust metal attachment parts, such as crankshafts, which have both journal and thrust surfaces. In side plunge grinding, a thrust surface and a cylindrical surface of a shaft workpiece with collars are finished in a single plunge …
jp
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Accès ouvert
2025
article
OpenAlex
Toru Kadono, Hiroyuki Kodama, Hiroki Yukami, Toshifumi Yamaguchi et autres
Introduction: An infusion-related reaction (IRR) is an adverse event that typically occurs when cytotoxic drugs or monoclonal antibodies are administered. Palonosetron, a 5-hydroxytryptamine 3 receptor antagonist, is commonly used to prevent chemotherapy-induced nausea and vomiting. IRRs due to palonosetron are very rare, …
jp
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Accès ouvert
2025
article
OpenAlex
Hiroyuki Kodama, Makoto Suzuki, Kazuhito Ohashi
Accurate prediction of tool life is crucial for reducing production costs and enhancing quality in the machining process. However, such predictions often rely on empirical knowledge, which may limit inexperienced engineers to reliably obtain accurate predictions. This study explores a method to …
jp
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Accès ouvert
2025
article
OpenAlex
Hiroyuki Kodama, Kazuhito Ohashi
In the field of die and mold machining, determining appropriate cutting conditions is crucial. Factors such as tool geometry, machining path, work material characteristics, machining efficiency, and finishing accuracy must be taken into consideration. However, the current method of determining cutting conditions …
jp
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Accès ouvert
2025
conference-paper
OpenAlex
Soto KOGUE, Hiroyuki Kodama, Kazuki Kaneko, Kazuhito Ohashi
During the cutting process, it is crucial to replace cutting tools at the appropriate time to ensure machining accuracy. However, determining tool lifetime often relies on the subjective tacit knowledge of skilled engineers. We aimed to address this issue by developing a …
jp
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Accès ouvert
2025
conference-paper
OpenAlex
Yuki Moriya, Hiroyuki Kodama, Kazuki Kaneko, Kazuhito Ohashi
Cutting conditions are typically based on tool geometry, overhang length, and material characteristics, but guidelines for compensating for these conditions due to overhang length are limited. We developed a system that automatically calculates compensation coefficients using a shape-approximation model according to overhang …
jp
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Accès ouvert
2025
conference-paper
OpenAlex
Hiroki Nishiura, Hiroyuki Kodama, Kazuki Kaneko, Kazuhito Ohashi
In drilling, tool breakage can occur due to tool wear and inadequate chip evacuation as cutting progresses. Being able to predict the timing of breakage is crucial, as unexpected failures can lead to increased cutting costs and time, ultimately resulting in lower …
jp
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Accès ouvert
2024
editorial
OpenAlex
Hirofumi Suzuki, Minoru Ota, Hiroyuki Kodama, Tatsuya Furuki
The demand for high-precision and high-efficient machining of high-performance materials and components has increased in various industries such as optical, automotive, communication, life sciences, and medical sciences. Certain difficult-to-machine materials can be reliably machined using deterministic precision cutting processes. However, hard and …
jp
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Accès ouvert
2024
article
OpenAlex
Hiroyuki Kodama, Soto KOGUE, Takahiro Nishi, Kazuhito Ohashi
During the cutting process, it is crucial to replace cutting tools at the right time to meet machining accuracy requirements. However, determining tool life relies on the unsystematic tacit knowledge of skilled engineers. Moreover, the increasing variety of cutting tools needed to …
jp
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Accès ouvert
2023
article
OpenAlex
Hiroyuki Kodama, Shota Matsuno, Naoyuki Shibata, Kazuhito Ohashi
The objective of this study was to determine the effect of vibration behavior on workpiece surface properties in low-frequency vibration cutting. The effects of the parameters that determine vibration behavior on surface roughness were quantitatively evaluated through a comparison with other cutting …
jp
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