Year9
and a pointer that can rotate more than one revolution. There is an equal division scale printed on the round dial of the dial indicator, that is, each division value is equivalent to the movement of the measuring rod in millimeters.
A dial indicator is an indicating measuring tool. A dial indicator is a measuring instrument that uses rack gear or lever gear transmission to convert the linear displacement of the measuring rod into the angular displacement of the pointer. It is mainly used to measure the size, shape and position errors of parts. The graduation value of the dial indicator is
, and there are
equally divided lines on the circumference of the dial. Therefore, the gear transmission system of the dial indicator should cause the measuring rod to move and the pointer to make one revolution. The dial indicator has three value ranges:
~
~
~
.
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The structure of the dial indicator
is mainly composed of
components: The body part of the meter is the transmission part and the reading part.
The working principle of the dial indicator
is to make the small linear movement of the measuring rod caused by the measured size
magnify it through gear transmission,
turn it into the index on the dial. Rotate,
to read the size of the measured size. If a lever is used instead of a rack, a lever dial indicator and a lever dial indicator can be made, which have a smaller indication range but higher sensitivity. In addition, their probes can rotate within a certain angle, adapt to measurements in different directions, and have a compact structure. They are suitable for
measuring the shape and position errors of cylindrical holes and grooves that are difficult to measure with ordinary dial indicators.
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Pinion gear
Large gear
Intermediate gear
Spring
Measuring rod
Pointer
Hairspring
Mainly used to measure the size, shape and position errors of parts. The graduation value is,
the measuring range is
.
, and then added together to obtain the measured value.
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One of the very important applications of dial indicator is to use dial indicator to connect Taiyou Technology
rData acquisition instrument
Measuring shape and position errors and other mechanical measurements, such as roundness, circle runout, flatness, parallelism and straightness
The schematic diagram is as follows:
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