Straight fluted reamers are useful for general reaming work. Helical fluted reamers are particularly suitable for reaming holes with key-way grooves or special lines cut into them. The helical flutes will bridge the gap and reduce binding and chattering.
102) Which of the following reamers is particularly suitable for reaming holes having keyway grooves ?
Answer is:
Helical fluted reamer
Explanation:
Related Cutting Tools MCQ - Machinist(Set-1) with Answers
Answer is:
Improper dressing of wheel
Explanation:
When the cutting edge of a grinding wheel takes a glass-like appearance due to wear of abrasive grains then it is called glazing of the grinding wheel. Glazing decreases the rate of grinding. The glazing in the grinding wheels takes place when the wheel is too hard or it revolves at a very high speed.
Thus the glazing may be decreased by using a softer wheel or decreasing the wheel speed.
The process of changing the shape of grinding wheel as it becomes worn due to breaking away of the abrasive and bond is called truing.
The process of improving the cutting action of the grinding wheel is called dressing.
Answer is:
All of the above
Explanation:
The effect of using a glazed or loaded wheel is
More heat generation
Poor surface finish
Excessive cutting pressure between the wheel face and the work surface
Answer is:
Proper grain size and grade of wheel
Answer is:
Floating reamer
Explanation:
Floating reamer can adjust itself in case of slight misalignment when fitted on a tailstock.
