ดาวน์โหลด "Whitworth Quick Return Mechanism #mechanical #engineering #mechanism #solidworks #cad #fusion360"

The Whitworth quick return mechanism is a mechanical linkage that converts rotational motion into reciprocating linear motion. It is named after its inventor, Sir Joseph Whitworth. This mechanism is commonly used in shaping machines, where it produces a faster return stroke compared to the forward stroke. The key feature of the Whitworth mechanism is the use of a slotted link, which is a link with a slot or elongated hole through which a pin or pivot passes. The rotation of the input crank causes the slotted link to move, resulting in the linear motion of the reciprocating tool or object. During the forward stroke, the tool moves relatively slowly, but during the return stroke, the tool moves rapidly. This characteristic is advantageous in shaping operations where the cutting tool needs to clear the workpiece quickly during the return stroke to minimize non-cutting time. The Whitworth mechanism can be understood better by examining its components: Crank: The rotating part that provides the input rotational motion. Slotted Link: The link that connects the crank to the reciprocating part. The slot in the link allows for a variable transmission ratio. Connecting Rod: Connects the slotted link to the reciprocating tool or object. Reciprocating Tool: The tool or object that undergoes linear motion. The motion is such that the return stroke is faster because the geometry of the slotted link causes the connecting rod to cover more distance in a shorter amount of time during the return stroke compared to the forward stroke. This feature enhances the efficiency of shaping operations by reducing the idle time of the cutting tool. While the Whitworth mechanism is effective for its intended purpose, it's worth noting that there are other mechanisms and devices with different characteristics for converting rotary motion to reciprocating motion, each suited to specific applications and requirements. Mechanical Mechanism 1