Introduction to Troubleshooting of Microscope Mechanism
1. Troubleshooting of coarse adjustment part
The main fault of coarse adjustment is that the tension is different when it is automatically lowered or lifted. The so-called automatic lowering means that when the lens barrel, mirror arm or stage is still at a certain position, without adjustment, it will automatically move under the action of its own weight. The phenomenon of slowly falling down. The reason is that the gravity of the lens barrel, lens arm, and stage itself is greater than the static friction. The solution is to increase the static friction to make it greater than the gravity of the lens barrel or the lens arm itself.
For the coarse adjustment mechanism of the inclined tube and most binocular microscopes, when the mirror arm slides down automatically, you can hold the anti-slip wheel on the inside of the coarse adjustment handwheel with both hands, and tighten both hands clockwise to stop the slide. .If it doesn't work, you should find a professional to repair it.
The lens barrel automatically slides down, which often gives people the illusion that it is caused by the loose fit between the gear and the rack. So a gasket is added under the rack. In this way, although the slide of the lens barrel can be temporarily stopped, it makes the The gear and the rack are in an abnormal meshing state. As a result of the movement, both the gear and the rack are deformed. Especially when the pad is uneven, the deformation of the rack is more severe, and the result is that part of the bite is tight and part of the bite is loose. Therefore , this method should not be used.
In addition, due to the long-term disrepair of the coarse adjustment mechanism, the lubricating oil is dry, and there will be an uncomfortable feeling when lifting and lowering, and even the friction sound of the parts can be heard. At this time, the mechanical device can be disassembled and cleaned, greased and reassembled.
2. Fine-tuning and troubleshooting
The most common faults of the fine-tuning part are stuck and failure. The fine-tuning part is installed inside the instrument, and its mechanical parts are small and compact. It is the most delicate and complicated part in the microscope. The fault of the fine-tuning part should be repaired by professional technicians. There are not enough Grasp it, don't dismantle it casually.
3. Troubleshooting of objective lens converter
The main failure of the objective lens converter is the failure of the positioning device. Generally, it is caused by the damage of the positioning spring. Axis calibration. After the shaft is aligned, tighten the screws. If it is an internal positioning converter, you should unscrew the big head screw in the center of the rotating disc and remove the rotating disc to replace the positioning spring. The method of optical axis calibration is the same as Same as before.
