Method for measuring tool microscope:

( 1 ) imaging method:

Image method is the use of labelled central microscope, measuring method of aiming and positioning of image method. When measuring, is usually the first ( the M word line ) on the reticle aiming reticle measurement image edge, and read out the values in the reading microscope, and then move the table in the same line at the measured image on the other side, then second readings. Two readings is poor, be measured values.

( 2 ) axis cutting method:

Axis cutting method is through the measured axis by measuring the knife on line measuring method to target location by marking the central microscope. Measuring tool is the universal tool maker's microscope accessories. The surface of a reticle to reticle, edge size of 0.3 and 0.9 mm two, measurement, the measurement of the knife on the measurement of knife plate, groove surface by measuring the axis, and the knife edge and the measured surface tightly contact with meters, corresponding word line to aim, measurement of the distance between two measuring knife line, measured indirectly measured measured values.

In order to avoid the calculation of measurement, both sides of the middle vertical meters word line engraved with two groups of a total of four symmetrical distribution of parallel lines, each line of the center line of the distance were 0.9 and 2.7 mm, it is precisely measured the sword blade to 3 times the distance between lines 0.3 and 0.9 mm. This 3 times with aiming lens, partition board 0.9 and 2.7 mm reticle is just pressed measured on the knife 0.3 and 0.9 mm reticle, when measured on the knife edge was intermediate line meters word line aimed at. Mainly used for measurement of diameter of thread.

( 3 ) contact method:

Contact method is significant attachment - optical hole measuring device using a measuring points, measured on and close to the central line, surface markers microscope million workers measuring method aiming to head in double line.

When measuring the measuring head is close to the optical measuring device ( internal, external ) surface. When the measurement aperture, first make the measuring head and the measured hole contact, to achieve maximum chord length, the M word line of the middle groove is optical hole measuring device of double line in the middle, and read the number in the reading microscope; then change the direction of measurement, the probe contact on the other side and measured, intermediate reticle also makes crosshairs reticle is optical hole measuring device of double line in the middle, read another in the reading microscope. Two readings, plus the measuring head diameter of the actual value, that is internal dimensions measured parts, such as minus the measuring head diameter of the actual value, is the size of the test piece.