Troubleshooting the Coarse Adjustment Section of an Olympus Microscope
The main fault with the coarse adjustment of the Olympus microscope is the uneven tightness of the automatic slide or lift. The so-called automatic sliding down refers to the phenomenon that when the lens barrel, mirror arm or stage is stationary at a certain position, it automatically and slowly falls down under the action of its own weight without adjustment. The reason is that the weight of the lens barrel, lens arm, and stage itself is greater than the static friction force. The solution is to increase the static friction force to the gravity of the lens barrel or arm itself.
For the coarse adjustment structure of the lens barrel and most binocular microscopes of Olympus microscopes, when the mirror arm automatically slides down, you can use your hands to hold the stop pulleys on the inside of the coarse adjustment hand wheel, and tighten them clockwise with both hands. This will stop the decline. 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 the gear and rack fit too loosely. So I added a spacer under the rack. In this way, although the slide of the lens barrel can be temporarily stopped, even if the gear and rack are in an abnormal meshing state, the movement will cause the gear and rack to deform, especially if the pad is uneven, the deformation of the rack will be even more severe. The result is that some parts are bitten tightly and some are bitten loosely. Therefore, this method should not be used.
In addition, due to the long-term disrepair of the coarse adjustment structure and the drying up of lubricating oil, it will cause an uncomfortable feeling when lifting and lowering, and you can even hear the friction sound of the machine parts. At this time, the mechanical device can be inserted and cleaned, greased and reassembled.
