Digital indication type measuring machine
AssigneeMitutoyo Mfg. Co., Ltd.
InventorsTakeshi Yamamoto, Hideo Sakata
Life of this patent
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Abstract
A digital indication type measuring machine comprising: a main body having a spindle displaceable in the axial direction thereof and a digital indication portion; a plurality of measuring heads detachably mounted to the main body, being different in size from one another, and each incorporating therein cone, in each of which a displacement value of the spindle is converted into a radial projection value of each of measuring elements at conversion rates equal to one another; an encoder for sensing the displacement value of the spindle; and a circuit for processing an output from the encoder and digitally indicating the resultant value.
Claims13
A digital indication type measuring machine comprising:
- a main body having a spindle displaceable in the axial direction thereof;
- a plurality of measuring heads detachably mounted to said main body, being different in size from one another, and each incorporating therein direction changing mechanism, in each of which a displacement value of said spindle is converted into a radial projection value of each of plural measuring elements at conversion rates equal to one another;
- a displacement detector for detecting a displacement value of said spindle;
- and
- an indication circuit processing an output signal from said displacement detector to obtain a measured length signal, digitally indicating a measured length value obtained from said measured length signal in an indicator and having a zero clear mechanism for forcedly clearing the indicated value in the indicator to zero value irrespective of the position of said spindle.
A digital indication type measuring machine comprising:
- a main body having a spindle displaceable in the axial direction thereof;
- at least two measuring heads detachably mounted to said main body, being different in size from one another, and each incorporating therein direction changing mechanism, in which a displacement value of said spindle is converted into a radial projection value of each of plural measuring elements at conversion rates equal to one another;
- an indication circuit processing an output signal from a rotary encoder for detecting a displacement of said spindle to obtain a measured length signal, digitally indicating a measured length value obtained from said measured length signal in an indicator and having a zero clear mechanism for forcedly clearing the indicated value in the indicator to zero value irrespective of the position of said spindle;
- control buttons provided on said main body portion and giving predetermined indication commands to said indication circuit;
- and
- a protective cover for making said control buttons unoperable.
Dependencies are inferred from the claim text.