Q1 The screw of the shaft straightener exerts a load of 3000Kg. The screw-type is square threaded of outside diameter (7.5cm) and (6mm) pitch. Take the height of the nut (150mm). Determine 1) Force required at the rim of 30cm diameter hand wheel, assuming a coefficient of friction is 0.12. 2) The maximum compressive stress in the screw, bearing pressure on the thread, and shearing stress in the thread. 3) Efficiency of the straightener. Nut- 150 Hand wheel Screw 100- 150- 400 All dimensions in mm

Elements Of Electromagnetics
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Q1 The screw of the shaft straightener exerts a load of 3000Kg. The screw-type is
square threaded of outside diameter (7.5cm) and (6mm) pitch. Take the height of the
nut (150mm). Determine 1) Force required at the rim of 30cm diameter hand wheel,
assuming a coefficient of friction is 0.12. 2) The maximum compressive stress in the
screw, bearing pressure on the thread, and shearing stress in the thread. 3) Efficiency
of the straightener.
Nut
T
150
↓
Hand wheel
Screw
100
150-
400
All dimensions in mm
Transcribed Image Text:Q1 The screw of the shaft straightener exerts a load of 3000Kg. The screw-type is square threaded of outside diameter (7.5cm) and (6mm) pitch. Take the height of the nut (150mm). Determine 1) Force required at the rim of 30cm diameter hand wheel, assuming a coefficient of friction is 0.12. 2) The maximum compressive stress in the screw, bearing pressure on the thread, and shearing stress in the thread. 3) Efficiency of the straightener. Nut T 150 ↓ Hand wheel Screw 100 150- 400 All dimensions in mm
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