Why feed box with gear cone with sliding key is not suitable for heavy duty lathe machine?
[3 marks]Name the Devices used for intermittent motion. Explain Geneva Mechanism in detail.
[4 marks]Explain various Elementary transmission methods for Transforming rotary motion into Translatory.
[7 marks]Discuss various properties of Materials used for sliding contact bearing.
[3 marks]State the functions and requirements of the spindle unit along with the materials.
[4 marks]With neat sketch explain following gear box: (1) Feed box with tumbler gear (2) Feed box with change gear
[7 marks]Design hydrodynamic journal bearing for a shaft of blower for following data: Bearing Load due to belt force: 3000N, Bearing Load due to weight of rotor: 600N, Speed of Blower: 600 rpm, diameter of shaft: 50 mm, Expected temperature of oil:70°, ambient temperature: 30°, c/d ratio - 0.0015, Minimum film thickness: 0.019 mm Calculate: actual attitude, type of oil used, power loss, heat generated, actual minimum film thickness.
[7 marks]Discuss various methods to improve dynamic stiffness of machine tools.
[3 marks]Discuss various types of Bed structure and wall arrangements and their applications with neat sketch.
[4 marks]Explain the design procedure of Slideways for wear resistance.
[7 marks]Why it is important to adjust the clearance in slide ways?
[3 marks]Write a note on Antifriction Guideways.
[4 marks]Give requirement of Protecting devices for slide ways and explain various types of protecting devices with neat sketch.
[7 marks]What do you understand by 6 × 37 rope? Explain with neat sketch.
[3 marks]How does the design of sheave and pulley differ?
[4 marks]Find the diameter of rope required for an overhead travelling crane with lifting magnet. Take, Lifting capacity: 5000 kg, Weight lifting magnet = 2000 kg, weight lifting tackle = 120 kg, Lifting height = 8 meters, No of Rope parts = 4Take Dmin/d = 23, d =0.045, E=8*104 N/mm2, σ = 1500 N/mm2 w r u1
[7 marks]Will you prefer a cast hook or forged hook in cranes? Give reason.
[3 marks]Draw diagram of material handling system with rope bending diagram for multiple crane pulley having 3 and 6 bends.
[4 marks]Design the crane hook for the lifting capacity of 10 tonnes, having triangular section. Take permissible tensile stress 120 N/mm2 for forged steel.
[7 marks]Discuss the role of Aesthetics in Product design.
[3 marks]Discuss product design in a viewpoint of: (1) Designer, (2) Customer
[4 marks]Discuss the importance of selection of proper tolerance for part dimensions.
[7 marks]Discuss following in brief: 1. Value Engineering 2. Consumer Quality level
[3 marks]Discuss the importance of CAD in developing the products.
[4 marks]Comment on the statement "A Design needs sound knowledge of Manufacturing technology and machine tools"
[7 marks]