tailieunhanh - Handbook Of Shaft Alignment Episode 2 Part 3

Tham khảo tài liệu 'handbook of shaft alignment episode 2 part 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 330 Shaft Alignment Handbook Third Edition You have to imagine that you are now looking at your drive system from above. When you are looking at the drive system from the side view with the motor to your left and the pump to your right which way are you looking north south east or west Getting this direction correct is very important because there is nothing worse than moving your machinery the right amount in the wrong direction. In our motor and pump drive system we are working on here let us say that we are looking toward the east as we view the machinery as shown in Figure and Figure . Now that we are going to be viewing our machines from above when modeling the top view we want to zero the indicator on the side that is pointing toward the top of the graph paper and plot the reading that is on the side that is pointing toward the bottom of the graph paper. In this case the direction pointing toward the top of the graph paper in the top view is going to be east. Therefore we want to zero the indicator on the east side of each shaft and plot the reading we will obtain on the west side of each shaft. There are two ways that we can do this. One way is to physically rotate the bracket and indicator over to the east side of each shaft zero the indicator there and then rotate the bracket and dial indicator 180 over to the west side and record the dial indicator readings we get there. The other way is to mathematically manipulate the east and west reading we obtained from the complete set of dial indicator readings to zero the east sides. Figure shows how to perform this math on the east and west readings. Original sag compensated readings Motor -40 Sag compensated 30 readings Pump Mathematcially zero the east readings Motor 0 50 50 Y x -50 50 0 e W 10 50 60 V_B Z -40 50 10 Pump 0-30J -30 Sag ZT compensated 30-30 0 E W -10-30 -40 readings B 20-30 -10 Original sag compensated readings with the east reading zeroed Sag compensated readings Pump 10 East to west

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