Metallographic microscope Mechanical part
1. Mirror base is the entire metallurgical microscope microscope base. Usually horseshoe-shaped or rectangular, used to support the entire mirror body smooth. Some microscopes are equipped with lighting devices in the mirror base.
2 . Mirror column is the upright part above the mirror base, used to connect and support the mirror arm.
3 . The mirror arm is the curved part of the mirror column upwards, which is held when taking the microscope. Some microscopes have a movable joint between the mirror arm and the mirror housing, which is called the tilting joint. It can make the mirror tilt backward to facilitate observation.
4. mirror tube Connected to the cylinder in front of the mirror arm, the general length of 160mm. some of the mirror tube is fixed, some can be moved up and down, in the upper end of the tube is equipped with an eyepiece, the lower end of the objective lens is connected to the converter.
5. adjuster is mounted on the mirror arm or mirror column size of two spiral, rotating the mirror barrel or carrier table up and down to adjust the distance between the objective lens and the specimen, that is, to adjust the focus. Coarse adjustment spiral rotation up and down a larger range of movement, can quickly adjust the distance between the objective lens and the specimen so that the object image is presented in the field of view. Fine adjustment spiral rotation when the lift range is small. Generally in the coarse adjustment spiral focus on the basis or in the use of high magnification, use it for comparison of the adjustment, so as to get completely clear image, and can observe the specimen of different levels and different depths of the structure.
6. Objective converter (rotating disc) connected to the lower end of the barrel can be freely rotated disc, with 3-4 holes, the objective lens that is mounted in these holes, rotating the rotating disc can be switched to different magnification of the objective lens. When the objective lens to the working position (i.e., with the optical axis axis), be sure to rotate the disc edge of the notch and the base of the fixed buckle together, otherwise unable to observe the specimen.
7. metallurgical microscope carrier stage in the square or round platform below the lens barrel, used to place the slide specimens. Platform in the centre of a circular light hole, from the bottom of the light through this hole to the specimen. The carrier table is equipped with a specimen sheet propeller, the left side of the curved spring clip is used to fix the specimen sheet, turn the right side of the two screws can move the specimen to the front and back, left and right. Some propellers also have scales on them, which can calculate the distance the specimen moves and determine the position of the specimen.
