Comparison of Whitworth and Slotted link Shaper Drive Mechanism

Comparison of Whitworth and Slotted link Shaper Drive Mechanism

Comparison of Whitworth and Slotted link Shaper Drive Mechanism - In the case of Whitworth quick return mechanism,

(i) On entering the cut, the highest pressure on the tool and the slowest speed is available.

(ii) On entering the cut the maximum pressure is holding the ram down in its slides and so steadying the ram when most necessary.

(iii) The minimum pressure is in the correct place on the Whitworth motion, because less pressure is required in the centre of the stroke.

The slotted link motion is direct opposite to all the three points enumerated above.

Not withstanding the advantages stated above for the Whitworth motion, constructional difficulties make it more suitable for traversing head shaping machines and slotting machines, so that the crank motion, despite its limitations finds general adaptation for the pillar type of shaping machines.