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Yoshioka Lab
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The lab creates future manufacturing process technology with ultra-precision mechanisms and robots.
AboutAbout the lab
High-precision, flexible manufacturing process technology
Yoshioka Lab studies manufacturing process technologies that give form to objects and send them out into society.
The lab aims to realize manufacturing process technology that achieves high precision, flexibility, and reliability at the same time.
The lab works on precisely moving mechanisms and their control, production systems that combine machine tools and robots, and process management based on machining-state monitoring and quality inspection.
Through research, the lab aims to help students acquire skills essential to engineers, such as design, machining, assembly, control, and measurement.
Key terms
- Positioning table
- A stage on which a workpiece or tool is mounted, moving it accurately to a target position and stopping it there
- Sub-nanometer
- A length smaller than 1 nanometer (one billionth of a meter), close to the size of an atom
- Air bearing
- A bearing supported by a thin film of air, allowing parts to move smoothly without touching each other
NewsLab news
Prof. Yoshioka received the Best Paper Award 2025 from the international journal IJAT
The lab took part in the Komaba Research Campus Open House
Prof. Yoshioka received the Best Paper Award at the international conference ICMT2024
A master's student received the Best Presentation Award at the Spring Meeting of the Japan Society for Precision Engineering
ResearchResearch themes
The lab aims for manufacturing process technology that achieves high precision, flexibility, and high reliability at the same time. It focuses on developing technologies such as high-precision motion mechanisms and their control, production systems that integrate machine tools and robots, and process management based on machining-state monitoring and quality inspection.
*Illustrative imageProduction that robots can reconfigure
For manufacturing floors shifting from high-volume, low-variety production to low-volume, high-variety production, the lab studies flexible production systems using industrial robots, whose processes and layouts are easy to change.
*Illustrative imageA stage that moves over long distances with ultra-precision
The lab develops high-speed positioning tables with sub-nanometer accuracy over a wide range, featuring a fully non-contact structure using air bearings and linear motors, and measurement with laser interferometers.
*Illustrative imageA stage that moves in a plane with nanometer precision
To achieve simultaneous motion in multiple directions with nanometer accuracy, the lab develops an XY table with a fully non-contact structure, evaluates its characteristics, and applies it to fine cutting.
*Illustrative imageA drive mechanism that tilts tools precisely
Ultra-precision machining of parts with complex three-dimensional shapes requires stages that tilt tools or workpieces with high accuracy. The lab proposes a new drive element that combines pneumatic and electromagnetic actuators.
MembersFaculty
Members of Yoshioka Lab consist of faculty, joint researchers from private companies and other organizations, and master's students.As of 2026
- ProfessorHayato YoshiokaPublications ↗
- Assistant ProfessorZongwei Ren
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “A Micrometer Screw guage” Jeremyida002 / CC BY-SA 4.0 (cropped)
- Production that robots can reconfigure: “IMAG0582” Rajandatta / CC BY-SA 3.0 (cropped)
- A stage that moves over long distances with ultra-precision: “VLT 4LGSF OTA L2 lens measurement on NANOMEFOS (tno kamphues 40)” F. Kamphues/TNO/ESO / CC BY 4.0 (cropped)
- A stage that moves in a plane with nanometer precision: “HPPS” Beidelberg / CC BY-SA 4.0 (cropped)
- A drive mechanism that tilts tools precisely: “Rotary piezoelectric motor ANR101v” Jaanus.kalde / CC BY-SA 3.0 (cropped)
- Related lab (先端加工学教室): “Centro cnc cinco ejes” Albertollopisrosa / CC BY-SA 3.0 (cropped)
- Related lab (長藤研究室): “FZU 3Dprinting 1” René Volfík / CC BY-SA 4.0 (cropped)
- Related lab (土屋研究室): “Turning on a Mandrel” David English / CC BY-SA 4.0 (cropped)
- Related lab (柳本研究室): “Hengersor08” Original uploader was Szalax at hu.wikipedia / CC BY-SA 3.0 (cropped)
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