Digital measuring head
First Claim
1. A digital measuring head in a measuring apparatus which measures a work by making a contact element abut to the work, the digital measuring head comprising:
- an arm supported rotatably around a support point arranged on a base;
a finger having the contact element at a tip end and mounted to a tip end portion of the arm; and
a scale and a read head, one of which is provided at a rear end portion of the arm and the other of which is arranged on the base, whereindisplacement of the contact element which contacts with the work is measured with the scale and the read head based on at least one of refraction and reflection of light by the scale.
1 Assignment
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Accused Products
Abstract
A digital measuring head in a measuring apparatus measures a work by making a contact element abut to the work. The digital measuring head includes an arm supported rotatably around a support point arranged on a base; a finger having the contact element at a tip end and mounted to a tip end portion of the arm; and a scale and a read head, one of which is provided at a rear end portion of the arm and the other of which is arranged on the base. Displacement of the contact element which contacts with the work is measured with the scale and the read head. Thereby, the measuring head can perform measurement in a wide range and becomes excellent in the actuation property and the temperature property, and masters for calibration of an indicated dimension are only used at an initial adjustment time.
10 Citations
9 Claims
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1. A digital measuring head in a measuring apparatus which measures a work by making a contact element abut to the work, the digital measuring head comprising:
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an arm supported rotatably around a support point arranged on a base; a finger having the contact element at a tip end and mounted to a tip end portion of the arm; and a scale and a read head, one of which is provided at a rear end portion of the arm and the other of which is arranged on the base, wherein displacement of the contact element which contacts with the work is measured with the scale and the read head based on at least one of refraction and reflection of light by the scale. - View Dependent Claims (2, 3, 4)
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5. A digital measuring apparatus comprising:
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a control unit; an analog to digital converter; an arm rotatably supported around a support point arranged on a base; a finger, including a contact element mounted to an end portion of the arm; and a scale and a read head, at least one of which is provided at a rear end portion of the arm and the other of which is arranged on the base;
whereindisplacement of the contact element which contacts with a work is measured with the scale and the read head based on at least one of refraction and reflection of light by the scale. - View Dependent Claims (6, 7, 8, 9)
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Specification