tailieunhanh - Handbook Of Shaft Alignment Episode 2 Part 4

Tham khảo tài liệu 'handbook of shaft alignment episode 2 part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 360 Shaft Alignment Handbook Third Edition To select the appropriate up and down scale factor start with the shaft that had the larger of the two bottom readings. In this example it is the pump shaft. Pick an up and down scale factor that will keep the entire length of the pump shaft within the boundaries of the graph paper. Usually this scale factor will keep the motor shaft which has the smaller bottom reading within the boundaries of the graph paper also. FIGURE Plotting a pump shaft onto the side view alignment model. reading. Draw a line from the point on the graph where the dial indicator captured the reading to the outboard end of that shaft. Remember whatever shaft the dial indicator has captured the readings on that is the shaft that will be drawn on the graph paper. Figure shows an example of plotting a pump shaft onto the side view alignment model. 3. Next at the intersection of the graph centerline and the point where the dial indicator has captured the smallest reading plot a point above or below this intersection one-half of the top to bottom or side-to-side dial indicator reading. If the bottom or side reading was negative place a point half of the bottom or side reading from the graph centerline toward the top of the graph. If the bottom or side reading was positive place a point half of the bottom or side readings from the graph centerline toward the bottom of the graph the same as in the point to point modeling techniques . Lay a straightedge from the point on the graph centerline where the bracket was held through the point on the graph where the dial indicator captured the reading. Draw a line from the point on the graph where the dial indicator captured the reading to the outboard end of that shaft. Figure shows an example of plotting a motor shaft onto the side view alignment model. Reverse Indicator Method 361 Construct the position of the motor shaft based on the bottom reading captured by the dial indicator as shown Motor .