Spindle

MTD HA3-Home Assignment – Spindle & Spindle Support Unit III

Q-1) Optimum Spacing between Spindle Supports is an important Parameter in spindle design. Define it mathematically & explain it graphically. What values are recommended for design.

Q-2) Recommended Material for following

a) Normal Accuracy Spindle

b) Above Normal Accuracy Spindle

c) Precision Accuracy Spindle

d) Heavy Duty Spindle

Q-3) Mention type of Taper as adopted on Spindle End of the following Machine Tools

a) Lathes

b) Milling Machines

c) Drilling & Boring Machines

d) Grinding Machines

Q-4) Ultimately the good Spindle Design is responsible for Machining Accuracy which means …………………………?

Q-5) Define Compliance. Explain its importance wrt Machine Tool Design.

Q-6) Maximum Profile accuracy is achieved when ………..?

Q-7) Total Compliance of the Machine Tool can be found as the sum of compliances of the …………….?

Q-8) In Machine Tool Spindle Design the critical design parameter is not strength but …………………..?

Q-9) Write down stepwise procedure to design a Spindle for Machine Tool Application.

Q-10) From force analysis point of view; when the spindle is supported on a single anti-friction bearing at each end it may be represented as …………………?

Q-11) Define & Explain Front & Rear supports of a spindle by diagram.

Q-12) Derive equation for compliance of a machine tool for a job being turned between centres.

Q-14) The deviation of the profile of a turned job from a true cylinder depends upon …………………?

Q-15) The Permissible deflection of the spindle nose should be ‘Less than one third of the maximum permissible tolerance on the …………………….?

Q-16) In large machine tools, Mechanical Tightening Devices are employed primarily to fulfill 4 requirements. Which are they?

Q-17)The torsional stiffness of machine tool spindles significantly influences the machining accuracy in metal-removal operations such as Gear &...