G-ratio varies from ________ in very rough grinding.
1.0 to 5.0
Based on the characteristics of very rough grinding and the typical G-ratio ranges associated with such aggressive material removal processes, the range of 1.0 to 5.0 is consistent with significant wheel wear relative to material removed. Therefore, the G-ratio varies from 1.0 to 5.0 in very rough grinding .
Important Questions from Different Machining Processes
When the file is pushed and pulled across the work, it is called:
A copper bar of diameter 200 mm is turned with a feed rate of 0.25 mm/rev with depth of cut of 4 mm. Spindle speed is 160 rpm. The material removal rate (MRR) in mm3/s is :
The manufacturer has marking on a grinding wheel as ' A 36 L 5 V'. The code 'V' represents the:
- In centreless grinding the regulating wheel is inclined at an angle of
A 20 mm diameter through-hole is to be drilled in a 30 mm thick plate using a double fluted, 120° lip angle drill. The drill tip is at a distance of 3 mm from the plate surface when cutting started and an over travel of 2 mm is recommended. If the drill rotates at 500 rev/min and the feed per revolution is 0.1 mm, the machining time of operation (in sec) will be
