Inside measuring instrument
AssigneeMitutoyo Corporation
InventorsHiroyuki WATANABE, Teppei OHNO
Life of this patent
Estimating the term…
Abstract
There is provided a thin-bottom type bore gauge having damping unit between a gauge head and a head main body part, and a long life. A head part of a bore gauge includes a head main body part, a measurement spherical face at one end face, and a gauge head slidably provided by penetrating an inside and an outside of the head main body part. The gauge head a spring holding groove carved in a circumferential direction at the other end side, and a compression coil spring is interposed between the spring holding groove and an inside end face of the head main body part.
Claims6
A head part of an inside measuring instrument which measure an inside of a measurement target object, the head part comprising:
- a head main body part;
- and
- a gauge head which includes a measurement spherical face on one end face and is slidably provided by penetrating an inside and an outside of the head main body part, wherein
- the gauge head includes a spring holding groove carved in a circumferential direction at the other end side, and
- a compression coil spring is interposed between the spring holding groove and an inside end face of the head main body part.
A head part of an inside measuring instrument which measure an inside of a measurement target object, the head part comprising:
- a head main body part;
- a gauge head which includes a measurement spherical face on one end face and is movably provided by penetrating an inside and an outside of the head main body part;
- a rod which is movable in a direction orthogonal to a moving direction of the gauge head;
- and
- a cam provided between the other end of the gauge head and the rod, and rotatably supported about an axis by the head main body part, wherein
- end faces or wholes of the gauge head and the rod are ceramic.
Dependencies are inferred from the claim text.