What are the different types of quick return mechanism?

There are three types of Quick return mechanism: Whitworth Quick Return mechanism. Crank and Slotted Link Mechanism and. Hydraulic Drive.

What are quick return mechanism where are they used?

A quick return mechanism is an apparatus that converts circular motion into reciprocating motion in presses and shaping machines, which are utilized to shape stocks of metal into flat surfaces. This mechanism is mostly used in shaping machines, slotting machines and in rotary internal combustion engines.

What is Whitworth quick return motion?

The Whitworth quick return mechanism converts rotary motion into reciprocating motion, but unlike the crank and slider, the forward reciprocating motion is at a different rate than the backward stroke. This mechanism is most commonly seen as the drive for a shaping machine.

What type of quick return mechanism is used in shaper?

A quick return speed mechanism is used in the shaper and slotter machine in which the circular motion is converted to reciprocating motion so that the slider moves forward and backward. In the forward direction, the cutting process occurs when there is no such cutting in return.

How are Whitworth quick return mechanism and crank and slotted lever mechanism are different from each other?

The difference between the crank and lever mechanism and the Whitworth mechanism is that in the Whitworth mechanism the return stroke is faster than the forward stroke while in the crank and lever mechanism the forward stroke is of the same speed as that of the return stroke. 1) Slotted Bar.

What is slotted link mechanism?

The Slotted Link Mechanism, “MBM1”, is an example of a quick-return mechanism, capable of transforming circular motion into reciprocating motion. It is made of aluminum and consists of a rotary element (graduated disk), called crank, connected to a rigid bar, called connecting rod.

Why the crank and slotted lever mechanism is called as quick return motion mechanism?

Since the crank rotates with uniform angular speed, therefore the return stroke is completed within shorter time. Thus, it is called quick return motion mechanism.

What is a quick return motion mechanism?

A quick return motion mechanism is used in the shaper and slotter machine in which the circular motion is converted into reciprocating motion so that the slider moves forward and backwards. In the forward direction, the cutting process occurs while in return there is no such cutting. Quick Return Mechanism Types:

What is whitwhitworth quick return mechansim?

Whitworth quick return mechansim is the second inversion of slider crank mechanism in which the crank is fixed. In this mechanism, the Slider in slotted bar is connected to the crank. When the crank rotates, the slider will slide inside the slotter bar and the slotted bar will oscillate.

Which fluid is used in hydraulic quick return mechanism?

Hydraulic fluid is used in hydraulic quick return mechanism for the movement of ram. In hydraulic drive, there is a tank at the bottom which contains the hydraulic fluid. This tank is also known as oil reservoir.

Why does the quick return of a cylinder take place?

The quick return takes place due to difference in the stroke volume of cylinder at both ends. The volume of passage at the left side is less than the volume of the passage on the right side.