Manufacturing And Production Technology
In a shaper, the length of stroke is increased by

Increasing the centre distance of bull gear and crank pin
Decreasing the length of the slot in the slotted lever
Increasing the length of the arm
Decreasing the centre distance of bull gear and crank pin

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Manufacturing And Production Technology
In a CNC program block, N002 GO2 G91 X40 Z40......, GO2 and G91 refer to

Circular interpolation in counter clockwise direction and incremental dimension
Circular interpolation in clockwise direction and incremental dimension
Circular interpolation in counter clockwise direction and absolute dimension
Circular interpolation in clockwise direction and absolute dimension

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