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1、Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systemsSection 4Pre-alignment stage4.1 Pre-alignment procedures 4.2Activity: Checking “Soft foot”1999 Fixturlaser AB1Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with F
2、ixturlaser Shaft systemsThree stages in Shaft Alignment Pre-alignment stage 粗调阶段 Ensure the shafts are “in-the-ballpark” 精调阶段 使用百分表或激光系统1999 Fixturlaser AB2Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems4.1 Pre-alignment ProceduresA. Off-si
3、te 准备 B. 现场的视觉检查 C. 现场的实施,过程 1999 Fixturlaser AB3Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systemsA. 准备, off-site Saftey regulations? Working permits? Time limits for production stop? Alignment tolerances? Thermal Offsets? Available space? Sh
4、aft rotation? Shims size? Alignment system? Batteries? Specifications?1999 Fixturlaser AB4Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systemsB.现场的视觉检查On-site visual check Machine, serial no. Saftey Available space Foundation condition Bed plate
5、 condition Bolt condition Adjustment capability Shims condition Leaks1999 Fixturlaser AB5Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems Machine temperature Gross soft foot Replace old shims Coupling assembly Mechanical looseness Run out Pi
6、pe strain Final soft foot Repeatability testC. Pre-Alignment Procedures “On-site actions”1999 Fixturlaser AB6Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems1. 机器温度 Measure the machine temperature Never align during the cool- down process Al
7、ign in hot or cold conditions1999 Fixturlaser AB7Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems2. 2. Correct gross soft footCorrect gross soft foot Loosen all mounting bolts. Find any loose shim packs. Correct by adding to loose shim packs
8、.1999 Fixturlaser AB8Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems3. 替换旧垫片Replace old shims Replace old and rusty shims, new shims in stainless steel. Avoid ”home made” shims. No more than 3-4 shims under each foot.1999 Fixturlaser AB9Fix
9、turlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems4. Coupling assembly Assembled according to supplier specification. Slightly loosen the bolts - minimize risk of hanging1999 Fixturlaser AB10Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Sh
10、aft200Shaft alignment with Fixturlaser Shaft systems6. Mechanical looseness Check looseness in bearings, gears etc. Mount a dial indicator to the shaft/coupling Try to move the shaft by hand for example using a crowbar 1999 Fixturlaser AB11Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft20
11、0Shaft alignment with Fixturlaser Shaft systems6. Check ”run out”Run out is caused by Eccentric couplings ”Out of round” couplings Bent shafts1999 Fixturlaser AB12Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systemsSet up the dial indicator The
12、dial indicator plunger contacts the hub or shaft to be checked. It is affixed to any point in space: the machine base,a bearing housing, the adjacent coupling hub (if the coupling is “broken”).6. Check “run out”1999 Fixturlaser AB13Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft a
13、lignment with Fixturlaser Shaft systems6. Check “run out” Measure run out The shaft to be checked is rotated until the dial indicator reaches a maximum: (+ or -). The dial indicator is adjusted to zero. The shaft is rotated again until the dial indicator reaches a maximum: (+ or -). This is the run
14、out value.1999 Fixturlaser AB14Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems6. 6. Check “run out”Check “run out”Checking Run OutDriven Side coupling run outShaft run outIf0,05 mm or less greater than 0,05 mm 0,025 mm or less greater than
15、0,025 mmThenDriven side OK, go to driver side coupling Check shaft run outShaft OK, coupling eccentric Shaft is bentDriver Side coupling run outShaft run out0,05 mm or less greater than 0,05 mm 0,025 mm or less greater than 0,025 mmRun out check completed Check shaft run outShaft OK, coupling is ecc
16、entric Shaft is bent1999 Fixturlaser AB15Fixturlaser Shaft50 Fixturlaser Shaft100 Fixturlaser Shaft200Shaft alignment with Fixturlaser Shaft systems7. 7. Check pipe strainCheck pipe strainChecking Pipe StrainIfThenSuction FlangeDial indicators changes at 12:00 or 3:00 are: 0,05mm or lessgreater than 0,05mmCheck discharge flangeEx
