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Kuboki-Kajikawa Lab
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A manufacturing lab that develops new processing methods for metals and wood.
AboutAbout the lab
Aiming to create new and unique processing methods.
The Kuboki-Kajikawa Lab studies new processing methods for shaping metal tubes, sheets, bars and wires, and wood-based materials.
With these new processing methods, the lab aims to make parts that could not previously be manufactured, or were expensive, available at a lower cost.
In addition to processing experiments, the lab uses the finite element method to examine the deformation and stress of the material during processing.
Lab visits and consultations are accepted by email at any time.
Key terms
- Finite element method
- A method that builds a model of the process on a computer and uses numerical analysis to examine quantities such as the wall thickness and stress of the formed product.
- Deep drawing
- A forming process in which a flat sheet is pressed into a die with a punch to form a concave shape that is deep relative to its diameter.
- Straightening
- A process at the final stage of a wire production line that makes the wire straight and determines the quality of the product.
ResearchResearch themes
The main aims of the Kuboki-Kajikawa Lab are developing new processing methods and making processing machines intelligent. The lab works on processing tubes, sheets, bars and wires, and wood-based materials, and on predicting their mechanical properties.
*Illustrative imageNew methods for processing tubes
The lab is working on a method that draws circular tubes while expanding them, diameter reduction using a metal ball as the tool, and rotary draw bending of thin-walled copper tubes.
*Illustrative imageMaking deep containers from sheets
The lab studies multistage deep drawing, in which a flat sheet is drawn in several steps to make a deep square container. It builds models of the process in finite element analysis software and examines changes in the wall thickness and dimensions of the formed product.
*Illustrative imageImproving the straightness of wire
To improve the straightness of wire, the lab builds finite element models of spinner straightening, examines the effects of factors such as the tool indentation depth, and works to clarify the mechanism of straightening.
*Illustrative imageExtending the life of sheet-bending dies
In V-bending, in which a sheet is bent, cracks can form at the bottom of the V-groove of the die. The lab examines the stress inside the die with the finite element method and proposes shapes that reduce tensile stress.
MembersFaculty
- Takashi Kuboki
- Shohei Kajikawa
VoicesStudent voices
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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: “Kopenhagen (DK), Nyhavn” Dietmar Rabich / CC BY-SA 4.0 (cropped)
- New methods for processing tubes: “Klystron tube 1952” 作者不詳 / Public domain (cropped)
- Making deep containers from sheets: “Parts made by deep drawing - 20100630” Pressteck S.p.A / CC BY-SA 2.0 (cropped)
- Improving the straightness of wire: “Steel wire rope on a drum” W.carter / CC0 (cropped)
- Extending the life of sheet-bending dies: “Mes en groef van een kantbank” Contour / CC0 (cropped)
- Related lab (Matuttis Lab): “20180620 Sand Rerik DSC09256 BW PtrQs” PtrQs / CC BY 4.0 (cropped)
- Related lab (Sasaki Lab): “أنابيب نانوية كربونية (Carbon nanotube)” Amira Ben Gouider Trabelsi / CC BY-SA 4.0 (cropped)
- Related lab (Usui Lab): “Pastilla superconductora” Esmeralda Lizet Martínez Piñeiro / CC BY 3.0 (cropped)
- Related lab (Nakamura-Shinyoshi Lab): “DV74HC4051 CMOS 1996 (01)” Retired electrician / CC0 (cropped)
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