Student written Research Laboratory Guidebook 2023Nagaoka University of Technology

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Laboratory of Machine Elements

Professor / OHTA Hiroyuki

ProfessorOHTA Hiroyuki

profiles and activiities profiles and activiities at nagaoka university of technology
J-GLOBAL
  • Solving problems, engineers's mission.
  • Originality, ingenuity and practice.
  • Always think the "why".

Supervisor

Professor / OHTA Hiroyuki
He is a professor who guides and advises us in an enthusiastic and passionate way. If we don’t understand something, he carefully explains us and makes us think the “why” of everything. Although he is quite strict regarding the research, when we have an event like a “nomikai” he is very gentle, and everybody have a good time.

Research Content

In the Laboratory of Machine Elements, we research about machine elements that are used in various places, such as automobiles, bullet trains, household electrical appliances, machine tools, etc. to improve their performance that directly leads to energy saving of machinery. Specifically, in collaboration with companies and by using softwares such as multibody analysis (MBA) or finite element method (FEM), we experiment and analyze the dynamics and tribology of machine elements that cause problems to the industry and propose a solution to their problems.

Multibody Analysis of Intersecting-Axis Type Trochoidal Gears

A Day in the Lab

The core time is 9: 00-17: 00. Morning seminar is held every day. In morning seminars, we discuss with the professor to deeply understand and confirm that our research is going in a good direction. Those who carry out experiments are often in the experimental room, and those who do simulations are often in the laboratory workstation. Everyone in the laboratory have a good relationship with each other.

Laboratory Workplace

Thesis Subjects

  • (M)Expressions of Friction Forces of a Four-Point-Contact Linear Ball Bearing
  • (M)Effect of Outer Ring Tilt on Displacements of an Inner Ring of a Ball Bearing
  • (M)Rolling Traction in Line Contact

The number of
PhD Graduates

2

Major employers of Graduates

  • NSK LTD.
  • MINEBEAMITSUMI INC.
  • NABTESCO CORPORATION
  • TSUBAKIMOTO CHAIN CO.
  • TAKEUCHI MFG. CO., LTD.
  • HITACHI CONSTRUCTION MACHINERY CO., LTD.
  • AJINOMOTO FROZEN FOODS CO., LTD.
  • NACHI-FUJIKOSHI CO., LTD.
  • SHIBAURA MACHINE CO., LTD.
  • O-M LTD.
Writer : KURAKADO Kota , Mechanical Engineering
(Tokyo Metropolitan College of Industrial Technology)