HARDNESS METER AND HARDNESS MEASURING METHOD
First Claim
1. A hardness meter comprising:
- a movable portion which is continuously pressed against an object to be measured;
a sensor which outputs an output signal reflecting a reaction force at a part of the object to be measured that is in contact with the movable portion;
a motive force mechanism that causes the movable portion to perform a piston motion; and
a hardness estimating portion which estimates the hardness of the object to be measured on the basis of an alternating current component of the output signal, generated by the piston motion of the movable portion.
3 Assignments
0 Petitions
Accused Products
Abstract
The objective of the present invention is to provide a hardness meter which estimates hardness in a stable manner regardless of a compression strength. Disclosed is a hardness meter characterized in being provided with: a movable portion which is continuously pressed against an object to be measured; a sensor which outputs an output signal reflecting a reaction force at a part of the object to be measured that is in contact with the movable portion; a motive force mechanism that causes the movable portion to perform a piston motion; and a hardness estimating portion which estimates the hardness of the object to be measured on the basis of an alternating current component of the output signal, generated by the piston motion of the movable portion.
1 Citation
15 Claims
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1. A hardness meter comprising:
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a movable portion which is continuously pressed against an object to be measured; a sensor which outputs an output signal reflecting a reaction force at a part of the object to be measured that is in contact with the movable portion; a motive force mechanism that causes the movable portion to perform a piston motion; and a hardness estimating portion which estimates the hardness of the object to be measured on the basis of an alternating current component of the output signal, generated by the piston motion of the movable portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hardness measuring method comprising:
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a first step of vibrating a movable portion; a second step of obtaining a sense signal on the basis of a reaction force from an object to be measured when the movable portion is caused to contact the object to be measured; a third step of obtaining an alternating current component of the sense signal; and a fourth step of estimating hardness of the object to be measured on the basis of an amplitude of the alternating current component. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification