Kuchiza pamwamba ndi njira yopangira pamwamba pamtunda wosiyana ndi makina, thupi ndi mankhwala kuchokera ku gawo lapansi pamtunda wa gawo lapansi, ndikuyeretsa, kusesa, kupukuta, kuchotseratu, ndikutsitsa pamwamba pa workpiece.
Cholinga cha chithandizo chapamwamba ndikukwaniritsa kukana kwa dzimbiri, kukana kuvala, kukongoletsa kapena zofunikira zina zapadera za chinthucho ndi magawo opangidwa ndi makina.