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US 6,484,570 B2Granted
Impression forming mechanism and hardness testing apparatus
AssigneeAkashi Corporation
InventorsMasaru Kawazoe, Takeaki Iida, Yuichi Minami, Mitsuru Oda
Life of this patent
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Abstract
An impression forming mechanism comprises; an arm with an indentor for forming an impression on a surface of a sample, and an arm operating part for operating the arm in order to apply a force to the sample, wherein the arm operating part is disposed below the arm.
Claims16
An impression forming mechanism which is used for a testing apparatus for measuring material characteristics of a sample by forming an impression with an indentor on a surface of the sample, comprising:
- a body part,
- an arm member having an arm portion and an elastic body portion, the arm portion being supported by the body part so as to be movable rotationally and attaching the indentor to a free end portion thereof, and the elastic body portion being elastically deformed so as to store a pressing force for forming the impression on the surface of the sample,
- an arm rotating force applying part for applying a force to the arm portion in order to move a free end side of the arm portion rotationally and in order to apply the pressing force by deforming the elastic body portion,
- a deformation measuring member for measuring an amount of a deformation of the elastic body portion, and
- a force control unit for controlling the pressing force stored in the elastic body portion on the basis of the amount of the deformation of the elastic body portion, which is measured by the deformation measuring member,
- wherein the arm rotating force applying part is attached to the body part below the arm portion.
3 more elements
A hardness testing apparatus comprising:
- a body part,
- an arm member having an arm portion and an elastic body portion, the arm portion being supported by the body part so as to be movable rotationally and attaching an indentor to a free end portion thereof, and the elastic body portion being elastically deformed so as to store a pressing force for forming the impression on the surface of the sample,
- an arm rotating force applying part for applying a force to the arm portion in order to move a free end side of the arm portion rotationally and in order to apply the pressing force by deforming the elastic body portion
- a hardness calculating mechanism part for measuring a shape of the impression formed on the surface of the sample, and for calculating a hardness of the sample on the basis of a result of measuring the shape of the impression,
- a deformation measuring member for measuring an amount of a deformation of the elastic body portion, and
- a force control unit for controlling the pressing force stored in the elastic body portion on the basis of the amount of the deformation of the elastic body portion, which is measured by the deformation measuring member,
- wherein the arm rotating force applying part is attached to the body part below the arm portion.
4 more elements
Dependencies are inferred from the claim text.