The understanding of the dial indicator - 2018
11 -
Seal the ping ping (
Luoyang remit worker bearing)
Dial indicator is often used in the process of our workshop production and processing of measuring tool, mainly used for measuring the shape and position deviation of workpieces.
Today, we introduce the working principle of dial indicator, using methods and how to maintenance.
The structure of the dial indicator principle is shown in figure (
1)
Shown below.
When measuring rod 1 moving up or down 1 mm, driven by gear transmission system pointer may turn a circle, small turn one pointer to 7.
Dial on the circumference of a circle, there are 100 divisions of each lattice reading value is 0.
01mm。
Small pointer readings for each grid 1 mm.
When measuring the pointer changes the amount of reading is the size variation.
Dial can turn to when measuring the pointer at zero scribed line.
The centigrade meter reading methods read smaller pointer turned the scale line (
The mm integer)
, read pointer to read a (around the calibration and
The decimal part)
And multiplied by zero.
01, and then combined, that is, get the measured values.
Note 1, before use, should check the flexibility of the measuring rod activities.
Gently push the measuring rod, measuring rod again within the sleeve to be flexible and mobile no rolling card phenomenon, each time after the hand, scale of pointer can return to the original position.
2, when using, must turn the dial indicator is fixed and reliable clamping frame.
Must not covet save trouble, just caught in the unstable place, otherwise easy to cause inaccurate measurements, or break the dial indicator.
3, measurement, don't make the measuring rod stroke more than its measuring range, don't make the header suddenly hit workpieces, don't use dial indicator to measure the surface roughness or significant uneven artifacts.
4, measuring plane, the dial indicator measuring rod and perpendicular to the plane, cylindrical workpiece measurement, measuring rod to the workpiece axis vertical, otherwise will make measuring rod activity is ineffective or inaccurate measurements.
5, for the convenience of reading, before the measurement is generally great Pointers to dial zero.
6, every time also want to check when using table pointed firmness.
7, check the spirit activities, as well as to check the table below shaft radial clearance, if shaking, whose hands in big swing when measuring precision of relative products will not be able to use.
Maintenance 1, away from liquid, do not make cooling fluid, cutting fluid, water or oil in contact with the inner table.
2, the inapplicable to pluck dial indicator, make the table remove all its load, make measuring rods in a state of freedom.
3, complete preservation box, avoid losing and mix.
