25) The cutting speed of the tool in mechanical shaper is maximum at

the end of the cutting stroke

the middle of the cutting stroke

beginning of the cutting stroke

None of the above

Answer is:

the middle of the cutting stroke

0.8 mm

1.2 mm

1.3 mm

1.4 mm

Answer is:

For changing the direction of feed, pawl is to be rotated 180 Degree.

When shaping 'T' slot, the function of clapper box is not used.

Pawl mechanism of a shaper is a unit, which regulates the speed of rpm.

When cutting 'T' slots in a shaper, clapper block need not to be lifted.

Answer is:

lift the tool during cutting stroke

lift the tool during return stroke

lift the tool in the middle of the stroke

avoid overhanging of tool

Answer is:

Base

Ram

Saddle

Clapper box

Answer is: