Tham khảo tài liệu 'handbook of shaft alignment episode 2 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 540 Shaft Alignment Handbook Third Edition Determining the Desired Off-Line Shaft Positions When Using the Machine Case to Baseplate or Machine Case to Remote Reference Point Methods If you employed one of the following techniques to measure OL2R movement the data you collected show how each end of the machinery moved from OL2R conditions Figure and Figure . Measurement points at or near each bearing 32 mils up 24 mils up 14 mils west 20 mils east Observed amount of movement from OL2R conditions view looking east for the lateral sideways movement 8 mils up 14 mils up 2 mils east 5 mils east figure Example of a desired off-line side view vertical shaft position alignment model using the machine case to baseplate or machine case to remote reference point methods. Measuring and Compensating for Off-Line 541 FIGURE Example of a desired off-line top view lateral shaft position alignment model using the machine case to baseplate or machine case to remote reference point methods. Calculating machine case thermal expansion using the strain equation Inside micrometer-tooling ball-angle measurement devices Proximity probes with water-cooled stands Optical alignment equipment Graph paper similar to what is used for the graphing or modeling techniques covered in Chapter 8 can be used to show the desired off-line shaft positions. The graph centerline will represent the final position of the shafts which is often referred to as the hot operating position or running shaft positions. If the machinery shafts move from OL2R conditions lines will be drawn on the graph paper to represent what position they should be in when offline so that when they move during operation they will come in line with each other . end up on top of the graph centerline . Along the graph centerline mark where the OL2R measurements were taken at the inboard and outboard ends of each piece of machinery. Other critical points such as the dial indicator or laser-detector .
