A Method for Measuring Static Unbalance of Flexible Hollow Tube Shaft
A technology of static unbalance and hollow tube, which is applied in the field of measurement, can solve the problems that affect the requirements of model equipment, unclear deviation between the center of mass of the tube blank and the center of rotation, and the low pass rate of the tail shaft, so as to solve the problem of production bottleneck and consistency Good, easy to operate effect
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[0030] A number 216# flexible stern tube blank used for helicopters has a length of 3075mm, an outer diameter of 57mm, and an inner diameter of 50mm. It is required to measure the unbalanced mass and calculate its unbalanced value. The specific The steps are:
[0031] 1. Design and manufacture a water tank with a length of 3500mm and a depth of 80mm;
[0032] 2. Inject water into the water tank, the water depth is 70mm, stuff two blown-up balloons with a diameter of 140mm into the flexible stern tube blank, and then put the flexible stern tube blank shaft into the water tank;
[0033] 3. After the flexible stern shaft blank is stationary, mark the highest point in the middle of the flexible stern tube blank;
[0034] 4. Rotate the flexible stern shaft blank so that the marked point faces down and then release it. After the flexible stern tube blank is stationary, use a marker to mark the highest point in the middle of the flexible stern tube blank. This process is repeated fo...
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