How do I troubleshoot problems with the mechanism of the microscope?
1, the microscope rough adjustment part of the troubleshooting
Microscope rough adjustment of the main fault is automatic decline or lifting and lowering of the tension is not the same. The so-called automatic decline refers to the mirror tube, mirror arm or carrier table static in a certain position, without adjustment, under the action of the weight of the microscope itself, the phenomenon of falling down automatically and slowly. The reason is that the gravity of the lens barrel, arm, carrier itself is greater than the static friction caused. The solution is to increase the static friction so that it is greater than the gravity of the lens barrel or arm itself.
For the microscope tilt tube and most of the binocular microscope coarse adjustment mechanism, when the mirror arm automatically slide down, available in both hands, respectively, to hold to the coarse adjustment of the handwheel on the inside of the stop pulley, both hands are in the clockwise direction of the tightening of the force, you can stop the slide. If it does not work, you should find a professional to repair.
Microscope tube automatically down, often give people the illusion that the gear and rack with too loose caused. So add shims under the rack. In this way, although the slide of the microscope tube can be temporarily stopped, but it makes the gear and rack in the abnormal bite state. As a result of the movement, the gear and rack are deformed. Especially when the pad is not flat, the deformation of the rack is more powerful, the result is part of the bite is tight, part of the bite is loose. Therefore, this method should not be used.
In addition, due to the microscope rough adjustment mechanism for a long time in disrepair, lubricant dry, lift will produce uncomfortable feeling, and even can hear the friction sound of the machine parts. At this time, the mechanism can be removed and cleaned, reassembled after greasing.
2, microscope fine-tuning part of the troubleshooting
Microscope fine-tuning part of the * common failure is stuck with the failure. Fine-tuning part of the installation in the internal instrument, its mechanical parts are small, compact, is a microscope in the * fine and complex part. Failure of the fine adjustment part of the microscope should be repaired by professional technicians. Do not dismantle it without sufficient certainty.
3, microscope objective lens converter troubleshooting
Microscope objective converter is the main failure of the positioning device failure. Generally positioning bullet ** damage (deformation, fracture, loss of elasticity, bullet ** loose set screws, etc.) caused by the replacement of the new bullet **, do not tighten the set screws, should be in accordance with this section, "three (b) 2" first for optical axis correction. And so on after the axis, and then tighten the screws. If the internal positioning converter, you should screw down the big head screw in the centre of the rotating disc, remove the rotating disc, in order to replace the positioning bullet **, the optical axis correction method is the same as the previous.
4, microscope spotter lifting mechanism troubleshooting (this part of the main fault is also automatic decline)
(1) straight microscope concentrator lifting mechanism has: 1. Celluloid washer 2. big head screw 3. eccentric rod set 4. rod 6. lifting handwheel 7. double-eye nut adjustment, a hand with a double-eye nut wrench inserted into the handwheel end of the double-eye nut, the other hand with a screwdriver inserted into the other end of the big head screw slot, and tighten it can be stopped from slipping.
(2) The lifting mechanism of the oblique cylinder microscope concentrator:
When adjusting, first use a screwdriver to withdraw the stationary screw in the middle of the double-eye nut for 1 to 2 turns, the bearing washer is a press fit with the stationary screw, therefore, it will also follow it to withdraw and detach from the end face of the toothed rod. Then, use a double eye nut spanner to turn the double eye nut in towards the adjustment seat. At the same time, use the other hand to turn the handwheel, test, until the lifting mechanism is suitable for loosening and tightening, and can stay in any position, before stopping the double-eye nut screwed in. * After, and then the resident screw into, so that the bearing washer contact tooth rod on the line.
The reason why this adjustment can eliminate the problem is because the inner hole of the adjustment seat is tapered. The tapered bushing is slotted in the axial direction. When the double-eye nut 1 is screwed inward, the conical bushing is topped inward, so that when the conical bushing advances, the slots become smaller and the bore shrinks, clamping the toothed rod more tightly and increasing the frictional resistance of the gear rotation, thus stopping the automatic descent.
