KI 140 Kinematic model: Whitworth quick return mechanism
The Whitworth mechanism is also known as the quick-return mechanism. It represents a revolving crank slider and produces non-uniform stroke movement with slow forward movement and fast backward movement. This mechanism is used in tools, packaging and transport machinery.
The KI 140 unit generates non-uniform stroke movement by means of a Whitworth mechanism. The experimental unit comprises the drive disk with crank and coupling, the driving rod and the cylinder.
The angle is adjusted using the crank disk, and an angle scale is integrated into the base plate. A millimetre-precise steel ruler is attached to the cylinder to measure the stroke.
The elements are mounted on a base plate. Two handles make it easy to carry and stack the unit.
- representation of a non-uniform reciprocating motion
Drive disk
- anodised aluminium
- ball-bearing mounted
Crank radius
- 46mm
Slider radius
- 55mm
Driving rod
- anodised aluminium
- length: 145mm
Cylinder/driving rod/frame
- stroke 0…100mm
- investigation of a revolving crank slider
- generation and investigation of non-uniform stroke movements
- adjustment
of the crank radius at three positions of the connecting rod on the crank disk - adjustment of the angle by turning the crank disk
- measuring the stroke on the cylinder
- base plate with handles
- investigation of a revolving crank slider
- influence of crank length and input angle on the output stroke
- recording the transmission function of a revolving crank slider