Measuring instrument, probe for the same, and measuring method
First Claim
1. A measuring instrument for measuring an inner and outer dimension of an object to be measured by a distance between a pair of probes, said pair of probes being abutted to the side of the object while relatively moving with each other, the measuring instrument comprising;
- a body provided with a table for the object to be put on, anda portal frame for supporting ends of a rail to the body through pillars,said rail provided above the table and extending along the moving direction of said pair of probes, and being provided with a pair of sliders at least one of which movably supported by said rail, andsaid pair of probes being provided on each of said pair of sliders, and extended downward to be abutted to the side of the object on the table.
1 Assignment
0 Petitions
Accused Products
Abstract
A body 1 placed thereon with a table 35 put thereon with an object to be measured W, and a portal frame 41 supporting both ends of rail 43 to the body through pillars 42A and 42B, the rail being placed above the table 35 and extending along a moving direction of a pair of probes 91A and 91B, are provided. A pair of sliders 51A and 51B are movably supported by the rail 43. The pair of the probes are extended downward from the sliders 51A and 51B to be abutted to the object W put on the table 35. The flexural deformation of the probes 91A and 91B is decreased due to the shorter length of the probes 91A and 91B, so that the high accurate measurement is achieved and a relative measurement is omitted.
22 Citations
18 Claims
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1. A measuring instrument for measuring an inner and outer dimension of an object to be measured by a distance between a pair of probes, said pair of probes being abutted to the side of the object while relatively moving with each other, the measuring instrument comprising;
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a body provided with a table for the object to be put on, and a portal frame for supporting ends of a rail to the body through pillars, said rail provided above the table and extending along the moving direction of said pair of probes, and being provided with a pair of sliders at least one of which movably supported by said rail, and said pair of probes being provided on each of said pair of sliders, and extended downward to be abutted to the side of the object on the table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A measuring instrument for measuring an inner and outer dimension of an object to be measured by a distance between a pair of probes, said pair of probes being abutted to the inner or the outer side of the object at a predetermined pressure while moving said pair of probes along a measurement axis, the measuring instrument comprising;
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a body provided with a table for the object to be put on, a first relative moving means for relatively moving said pair of probes and the table in a first relative moving direction perpendicular to the measurement axis and approximately parallel to the diametral direction of the object, a second relative moving means for relatively moving said pair of probes and the table in a second relative moving direction perpendicular to the measurement axis and perpendicular to the first relative moving direction, a tilt adjusting means for adjusting a tilt of the table against a plane perpendicular to the second relative moving direction, and a probe drive control means for moving said pair of probes along the measurement axis and being capable of moving only one of said pair of probes along the measurement axis. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A measuring method for measuring an inner or outer diameter of an object to be measured by a distance between a pair of probes, said pair of probes being movable along a measurement axis and being relatively moved to be abutted to the inner or outer diameter of the object, comprising the steps of;
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first adjusting the measuring position, wherein said pair of probes are abutted to the inner or the outer diameter of the object and urged at certain pressure, wherein the distance between said pair of probes is measured while said pair of probes and the object are relatively moved in a first relative moving direction perpendicular to the measurement axis and approximately parallel to the diametral direction of the object, and wherein said pair of probes and the object are positioned so that the distance between said pair of probes is maximized, first adjusting the tilt of the inner or the outer diameter of the axis of the object, wherein the change in the distance between said pair of probes is measured at the position where the distance between said pair of probes is maximized while only one of said pair of probes is abutted to the inner or the outer diameter of the object, wherein the one of said pair of probes and the object is relatively moved in a second relative moving direction perpendicular to the measurement axis and perpendicular to the first relative moving direction, and wherein the tilt of the inner or the outer diameter of the axis of the object is adjusted so that the change in the distance between said pair of probes is minimized, and after the tilt is adjusted, measuring the inner or the outer diameter of the object by the distance between said pair of probes being abutted to the inner or the outer diameter of the object after the relative movement of said pair of probes along the direction of the measurement axis. - View Dependent Claims (18)
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Specification