How to solve the problem of coarse adjustment of Olympus microscope
The main fault of the coarse adjustment of the Olympus microscope is the uneven tightness when automatically sliding down or lifting. Automatic sliding down refers to the phenomenon that when the lens barrel, mirror arm or stage is stationary at a certain position, it will automatically and slowly fall down under the action of the weight of the Olympus microscope itself without adjustment. 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 force so that it is greater than the gravity of the lens barrel or arm itself.
For the coarse adjustment mechanism of the tilt tube of Olympus microscopes and most binocular Olympus microscopes, when the mirror arm automatically slides down, you can hold the stop pulley on the inside of the coarse adjustment handwheel with both hands and press it clockwise with both hands. Tighten firmly in the direction to prevent sliding. If it doesn't work, you should find a professional to repair it.
The Olympus microscope lens barrel automatically slides down, which is often mistakenly thought to be caused by the gear and rack being too loose. So I added a spacer under the rack. In this way, although the slide of the microscope barrel can be temporarily stopped, the gear and rack are in an abnormal engagement state. As a result of the movement, both the gear and rack are deformed. Especially if the pads are uneven, the deformation of the rack will be more severe. As a result, part of the rack will be bitten tightly and part of it will be bitten loose. Therefore, this method should not be used.
The coarse adjustment mechanism of the Olympus microscope has been in disrepair for a long time and the lubricating oil has dried up. It will cause an uncomfortable feeling when lifting and lowering, and you can even hear the friction of the parts. At this time, the mechanical device can be disassembled, cleaned, greased and reassembled.
