Sintokogio, Ltd.

Takumi Kobayashi

Hiroyasu Makino

Suguru Mukai

Natsuki Yui

Koji Ito

Masahiko Nagasaka

The present invention provides a force sensor that is capable of detecting plastic deformation of a strain element. The force sensor detects components, in a plurality of directions, of a force exerted on the strain element. The force sensor includes: inspection strain gauges disposed in stress concentration areas of the strain element; and an inspection bridge circuit that includes the inspection strain gauges and that is configured to detect a component, in a specific direction, of a stress that occurs in the strain element.

Force sensor

[Problem] To provide a main mold and core setting device and a main mold and core setting method which enable core setting work, hitherto implemented by a core setting operator using subtle hand sensation, to be completely reproduced by automation. [Solution] The present invention is provided with: a core grasping and moving means for grasping and moving a core; a core movement amount detection means for detecting a movement amount of the core grasping and moving means; a grasped core position and posture detection means for detecting a position, orientation, and inclination of the core grasped by the core grasping and moving means; a main mold position and posture detection means for detecting a position, orientation, and inclination of a main mold; a sensor for detecting a physical quantity applied to the core; and a control means for constantly calculating relationships between relative positions, orientations, and inclinations of the main mold and the core, and from these relationships and the physical quantity applied to the core detected by the sensor, controlling the core grasping and moving means so that the core is caused to set with the main mold.

Main mold and core joining device and main mold and core joining method

The present invention improves the reliability of a force sensor in terms of mechanical troubles. The force sensor includes: a primary bridge circuit that includes a first strain gauge group disposed on a first main face of a strain element and that is configured to detect a component, in a specific direction, of a force exerted on a strain element; and a secondary bridge circuit that includes a second strain gauge group disposed on a second main face of the strain element and that is configured to detect a component of a force in the same direction as the specific direction.

Force sensor for detecting a component of a force exerted on a strain element in a specific direction

The present invention achieves a force sensor in which an electrode, element, and/or the like connected to a strain gauge can be suitably attached to a strain element. The force sensor includes: a strain element including an arm portion that is deformable under an external force; and a strain gauge attached to the arm portion. The strain element includes a projection that sticks out from the arm portion in a direction intersecting the longitudinal direction of the arm portion.

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Aichi, Japan

Takumi Kobayashi