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

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

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Manufacturing And Production Technology
In ultrasonic machining, the metal is removed by

Direct contact of tool with the work
Using abrasive slurry between the tool and work
Erosion caused by rapidly recurring spark discharges between the tool and work
Maintaining an electrolyte between the work and tool in a very small gap between the two

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