Crank and Slider
From DT Online
A Crank and Slider mechanism changes rotary to reciprocating motion or vice versa.
Features and Applications
An air compressor uses this principle in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.
It sometimes necessary to know the path traced, or Loci, of pieces of machinery to check clearances, estimate the velocities at different parts of a linkage (perhaps to calculate Momentum) or to design guarding for example. The general method is to draw the linkage or mechanism in several ‘freeze frame’ positions then draw a smooth curve through the plotted points.
|Plotting Loci on a Crank and Slider Mechanism
|Crank and Slider - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.
|Crank and Slider in which the slider reciprocates and turns 90 deg. at the end of its stroke.