Elimination of Micromirror Condenser Lifting Mechanism
(1) The lifting mechanism of the straight Olympus microscope condenser includes: 1. Celluloid washer 2. Thumb screw 3. Eccentric gear rod sleeve 4. Gear rod 6. Lifting hand wheel 7. When adjusting the binocular nut, one Use one hand to insert the double-eye nut wrench into the double-eye nut on the end face of the handwheel, and the other hand to use a screwdriver to insert into the slot of the thumb screw at the other end, and tighten it firmly to stop the slide.
(2) Lifting mechanism of oblique tube Olympus microscope condenser:
When adjusting, first use a screwdriver to withdraw the resident screw in the middle of the binocular nut for 1 to 2 turns. The bearing washer is tightly fitted with the resident screw, so it will also withdraw with it and break away from the end face of the gear rod. Then, use the double-eye nut wrench to screw the double-eye nut into the adjustment seat. At the same time, use the other hand to turn the handwheel and carry out the test until the lifting mechanism is properly tightened and can stay at any position before stopping the screwing of the binocular nut. Finally, put the stop screw in again so that the bearing washer touches the gear rod.
The reason why such an adjustment can eliminate faults is because the inner hole of the adjustment seat is tapered. The tapered bushing has notches in the axial direction. When the double-eye nut 1 is screwed inward, the tapered sleeve is pushed inward, so that when the tapered sleeve advances, the notch becomes smaller, the inner hole shrinks, the gear rod is clamped tighter, and the friction of the gear rotation is increased. resistance, thereby stopping the automatic drop
Several Applications of Microscope in Production
1. Metallographic microscope inspection of raw materials: inspection of metallurgical quality of raw materials such as segregation, distribution type and level of non-metallic inclusions; inspection of casting porosity, pores, and slag inclusion structure uniformity of cast materials; surface decarburization of forgings, Check for overheating, overburning, cracks, deformation, etc.
2. Quality control in the production process: metallographic microscope can provide the basis for adjusting the process and modifying the process parameters, and guide the production, such as whether the heat treatment quenching heating temperature, heat preservation time, cooling speed, etc. are appropriate (correct); the control of chemical surface heat treatment process parameters ; Whether the initial and final forging temperatures of forging are appropriate, etc.
3. Failure analysis of metallographic microscope: metallographic structure analysis method is widely used in mechanical failure analysis, and it is very convenient to identify some common defects. Such as surface decarburization of machine parts; morphology and distribution characteristics of microcracks; chemical heat treatment defects; abnormal structure after heat treatment; brittle phase precipitation at grain boundaries, etc. The results of these metallographic analyzes are often used as the basis for failure analysis.
4. Product quality inspection: In addition to mechanical performance and physical performance indicators, some mechanical parts or products also require microstructural parameters as one of the technical indicators for quality assessment.
