What are the measuring methods of tool microscope

The tool microscope is a measuring instrument based on the principle that the main microscope aims at the measured object and the rectangular coordinate measurement. Because it has two kinds of installation methods of the tested parts: platform and thimble, and the optical axis of the main microscope can be tilted left and right and equipped with many accessories, it has a wide range of applications. It can accurately measure the size, angle, shape and position of various workpieces, as well as the parameters of threaded workpieces. It is one of the commonly used measuring instruments in the measuring room and workshop inspection station of machinery manufacturing enterprises.

Measuring method of tool microscope:

1. Image method: the image method is a measurement method for aiming and positioning the image method by using the marks of the central microscope. During measurement, generally, the scribe line on the (meter line) reticle is used to aim at the edge of the image of the test piece, and the value is read out on the reading microscope, then the workbench is moved to aim at the other side of the image of the test piece with the same scribe line, and then the second reading is made. The difference between two readings is the measured value of the measured part.

2. Axial cutting method: the axial cutting method is a measurement method that uses the mark of the central microscope to aim and position the axis line of the measuring piece and the score line on the measuring knife. The measuring knife is an accessory of the multimeter. There is a scribe line on the surface, and the dimensions from the scribe line to the cutting edge are 0.3 mm and 0.9 mm. During measurement, place the measuring knife on the measuring knife backing plate, and the scribe surface passes through the axis of the measuring piece, and make the cutting edge of the measuring knife and the measured surface tightly contact. Aim with the corresponding meter line, measure the distance between the scribe lines of the two measuring knives, and indirectly measure the measured value of the measured piece. In order to avoid calculation in measurement, two groups of four symmetrically distributed parallel lines are engraved on both sides of the middle vertical meter line. The distance between each group of lines and the center line is 0.9 and 2.7 mm respectively, which is exactly three times the distance between the cutting edge of the measuring knife and the line of 0.3 and 0.9 mm. When aiming with a 3x objective lens, the 0.9 and 2.7 mm marks on the reticle just press the 0.3 and 0.9 mm marks on the measuring knife. At this time, the cutting edge on the measuring knife is just aimed by the middle mark of the meter line. Mainly used for pitch diameter measurement of thread.