tailieunhanh - Handbook of Shaft Alignment Part 8

Tham khảo tài liệu 'handbook of shaft alignment part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 320 Shaft Alignment Handbook Third Edition FIGURE Representing the centerlines of rotation of machinery shafts as straight lines. many more that are logical easy and inexpensive to do. If your alignment system limits you to a few choices there is a possibility that you will eventually run into trouble. Honestly if you do enough alignment jobs I can virtually guarantee you will run into a problem with a limited number of solutions. To my knowledge there is no more effective way to correct misalignment than the methodology explained in this chapter. Still today some people who align rotating equipment will do trial-and-error alignment. They install some shim stock under the feet and move the machinery sideways a little bit take another set of readings and see if the measurements got any better. This sophisticated technique called guessing will eventually produce frustration anxiety and anger if continued for long periods of time. To a certain extent I applaud their effort. At least they made an attempt to improve the misalignment condition many others do not even try. There happens to be a much better way to determine how to accurately position the machinery instead of guessing. And there happens to be a better way than having a limited computer software program telling you what to do particularly if there could be a simpler way to solve the misalignment condition. Even for people who align rotating machinery on a regular basis it is very difficult to visualize exactly where the centerlines of rotation are by just looking at dial indicator laser or optical encoder measurement data. Your goal is to position each machine so that both shafts Alignment Modeling Basics 321 run in the same axis of rotation and you invariably begin to wonder Is one shaft higher or lower than the other one is it to the west or is it to the east and if so how much Alignment models can be as simple or as complex as the drive system itself. If you are trying to align two pieces of machinery