삼 사물 메모 때 작동 a 도구 현미경
1. 지불 주의 to the 초점 sequence of the 접안렌즈 및 대물 렌즈
많이 사람 사용 the 대물 렌즈 to 조정 the 초점 when 그들 시작 to 측정. 후 조정 the object's 초점 길이, 그들 그때 사용 the "미터" line in the 접안렌즈 to align the 측정. 만약 the "미터" 선 is not clear enough, 그들 의지 조정 the 초점 의 the 접안렌즈. . In fact, this order is wrong, because it will cause a certain artifact in the image of the 물체 존재 측정 이후 존재 초점. The correct method is to first adjust the "meter" line in the 접안렌즈 clearly, and then focus on the object, so as to ensure that the "meter" line and the image of the object are clear.
2. 지불 주의 버 및 긁힘 표면 테스트 조각 전 측정.
The parts under test may produce some burrs and scratches during processing, use and transportation. these defects are not easy to detect, but they can easily cause misalignment of the universal tool microscope during measurement or cause the measurement surface to be not on the same focal plane. certain local ghosts will affect the accuracy of the measurement results, so these surface burrs and scratches must be thoroughly removed.
3. 지불 주의 to correct installation of the component under test
There are generally two types of installation methods for the parts under test on universal tool microscopes: (1) Placement of flat test parts. For flat test parts, it is important to note that the measured surface of the tested part should be on the same focal plane, otherwise it is easy to form a local ghost image. For parts with chamfers on the measured surface, it is best to keep the chamfer facing downwards, otherwise it will easily cause focus adjustment. Not clear, resulting in inaccurate measurements. (2) Installation of shaft measuring parts. Shaft test parts generally rely on the center hole for positioning. The hole must be cleaned before installation, especially to eliminate sand and burrs. Otherwise, the axis line of the test piece will be out of alignment with the center line of the instrument, resulting in Large measurement error. This situation is often encountered in daily measurements. The best way is to use the horizontal line of the "meter" line in the reticle of the instrument to check the runout error of the outer diameter of the measured shaft after installation, thereby judging the measured shaft. Are the components installed correctly?
