The crankshaft and connecting rod (or piston rod).
'crank shaft' converts the reciprocating motion of the piston into rotary motion on the flywheel.
Try a Scotch Yoke.
Crankshaft
In very crude terms, rotary motion is round & round, reciprocating motion is back & forth. A piston engine has both kinds of motion. The crankshaft displays rotary motion, the pistons display reciprocating motion. The camshaft displays rotary motion, the valves display reciprocating motion. Out on the suspension, the wheels display rotary motion and the shock absorbers display reciprocating motion. (One might say the shocks don't display "true" reciprocating motion because they're not CONSTANTLY in motion, but that one drives on better roads than they have here!)
The Cam
A reciprocating engine is different than when using rotors. Rotors are used in a pistonless rotary engine, using one or more rotors and sometimes called rotary pistons.
A cam is a rotating component used in a mechanism in order to transform a movement from a circular to a reciprocating motion. A crank performs the opposite action. A common example of a cam mechanism is that found on a car engine where the camshaft translates the rotary motion of the engine into a reciprocating motion to operate the intake and exhaust valves on the engine cylinders. Please see the related links for an example animation and more detailed explanation.
One which generates its power using rotary (like the Wankel engine) rather than reciprocal motion.
spiniards
In very crude terms, rotary motion is round & round, reciprocating motion is back & forth. A piston engine has both kinds of motion. The crankshaft displays rotary motion, the pistons display reciprocating motion. The camshaft displays rotary motion, the valves display reciprocating motion. Out on the suspension, the wheels display rotary motion and the shock absorbers display reciprocating motion. (One might say the shocks don't display "true" reciprocating motion because they're not CONSTANTLY in motion, but that one drives on better roads than they have here!)
connecting rod is provided between crank and the piston,which converts the reciprocating motion of the piston into rotary motion of the crank.
It is the reciprocating motion of the pistons that is changed into rotary motion by the cam axle.
The Cam
Reciprocating motion is the up and down motion.. This motion is converted into ratational motion by the crankshaft.. This because it (crankshaft) is frequently combined with flywheel thus to keep the discontinous reciprocating energy as rotation energy.. Added points. Crankshaft drive is the entire mechanism that converts the engine's piston up and down motion where as in cylinder a piston is moved as aresult of applied fluid pressure, the actuator provide rotary motion (Lawrence dinala- Law Dinh)
A reciprocating airplane refers to an aircraft that is powered by a reciprocating engine, also known as a piston engine. These engines work by converting the reciprocating motion of pistons into rotary motion that drives the propeller. Reciprocating airplanes are commonly used in general aviation and smaller aircraft, offering reliability and efficiency.
Linear Motion, reciprocating motion, rotary motion, and oscillating motion
Rotary means going around, like in a Wankel. Reciprocating means going back and forth. like in a ordinary piston engine.
Crank and slider
single slider crank is a simple actuator which consists of four links and which converts rotary motion into reciprocating and vice versa.
Linear Motion, Reciprocating motion, Rotary motion, Oscillating motion