Sree's Metal Cutting - Unit 1 - Day 3

Generally tool life is expressed in terms of

• Time

• No. of pieces of work machined

• Total volume of material removed

• Total length of cut.

Pick odd man out: Time to change the tool is determined by

• Limiting value of surface finish

• Decrease in cutting forces

• Decrease in Dimensional accuracy

• Overheating and fuming

• Presence of chatter (vibration)

Which is not a mode of tool failure?

• Temperature

• Rupture

• Gradual Wear

• BUE

Pick odd man out: Tool Wear Mechanisms

• Adhesion

• Cohesion

• Abrasion

• Diffusion

Taylor's tool life Equation

• TVⁿ=C

• TV^a=C

• VT^a=C

• VTⁿ=C

Which parameter affects the tool life the most?

• Cutting Velocity

• Feed

• Depth of Cut

Identify the X-axis

• Feed

• Velocity

• Time

• Depth of Cut

What do a, b, and c in Taylor's Modified Equation (VT^af^bd^c = C) stand for?

• Variables

• Coefficients

• Exponents

• Constants

The a, b, c and C in Taylor's Modified Equation (VT^af^bd^c = C) based on?

• Cutting fluid

• Ambient Conditions

• Tool-Work Materials

• Machine Specifications

________ is determined by workpiece geometry.

• Cutting Fluid

• Depth of Cut

• Speed

• Feed