This is an introduction to the variable stiffness robot joint developed in collaboration with Ritsumeikan University. We welcome prototypes of robots and various research projects.
■Through the support project for prototype development by the Ministry of Economy, Trade and Industry, we developed a technology in collaboration with Ritsumeikan University that can change the rigidity of robotic joints by 100 times. For example, by adding this joint to a rod, it can be made as hard as a steel rod or as flexible as a carbon shaft. ■Aiming for coexistence between humans and robots, we are considering ways to avoid unexpected excessive contact forces with humans by changing rigidity. ~ We welcome research prototypes from universities, starting with robots. Below are examples of our work ~ 【Request Details】 We would like to create something to verify the theory regarding robotic parts being researched at the university. 【Proposal Details & Flow】 ○ Design We will listen to the specific ideas and repeatedly refine them, while creating a basic layout diagram of the main components at our company. ○ Simulation We will create detailed drawings of each component and conduct 3D motion simulations to confirm any issues, leading to the production of the parts. ○ Manufacturing For the special parts specified by the university, we first proposed manufacturing using general-purpose components to verify the theory, which was well received as it facilitated the progress of the research.
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basic information
◆◇◆Technical Overview◆◇◆ A new variable stiffness mechanism has been added to a typical robot joint driven by a motor through a reducer. When coexisting with humans, the stiffness can be softened to avoid excessive contact force during unexpected contact with the arm while in motor drive mode. Conversely, when power and speed are required, the stiffness of the joint can be increased. By changing the stiffness according to the situation, it is possible to broaden the range of applications for the product. ◆◇◆Application Proposals◆◇◆ ◆Medical and Welfare (Rehabilitation) Robots A rehabilitation device that gently catches a subject when they are about to fall during rehabilitation, and increases stiffness to help lift the subject back up. ◆Industrial Machinery Recently, there was an accident where a robot arm pinched someone during inspection work in a PET bottle manufacturing factory. By adding this function, it is possible to ensure safety at the machine level, which is the highest level of safety, rather than just at the software or sensor level.
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Applications/Examples of results
◆◇◆Application■□■ ◆Medical and Welfare (Rehabilitation) Robots ◆Industrial Machinery Robots
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Company information
We primarily produce hydraulic valves for forklift manufacturers. We manufacture solenoid valves, check valves, flow control valves, fuse valves, and more. For valves that are produced repeatedly, we handle everything from design to production consistently, so please consult us when you want to develop a new valve. Additionally, we are expanding our capabilities in design and prototyping through collaboration with academia, supported by the Ministry of Economy, Trade and Industry's prototype development support project, including the development of robotic joints. If you have new development items such as sub-assemblies, please let us know. At Mutsumi Industries, we have established a production system using a "cell assembly method" that efficiently allocates the necessary work processes and personnel to respond more quickly with high-quality products to the diversifying product needs. We also thoroughly implement "3S (Sort, Set in order, Shine)" within the factory. We are committed to ensuring quality and meeting delivery deadlines, so please feel free to place your orders with confidence. <Acquired Eco Action 21 Environmental Management System> <Implementation of quality management operations guided by ISO 9001 auditors>