A NEW APPROACH FOR DESIGN AND ANALYSIS OF GENEVA MECHANISM

Abstract

 A NEW APPROACH IS PROPOSED FOR GENEVA WHEEL WITH CURVED SLOTS AS AN INTERMITTENT ROTARY MOTION GENERATING MECHANISM. BY CHANGING THE SLOT SHAPE FROM A STRAIGHT RADIAL LINE TO A CURVED LINE, THE SHOCK LOADING AT THE BEGINNING AND END OF THE MOTION IS ELIMINATED. THIS MECHANISM REDUCES THE WHEEL PEAK VELOCITY AND PEAK ACCELERATION VALUES, AND ALSO SUITED FOR HIGH-SPEED APPLICATIONS. PRESENT WORK SHOWS A GREAT IMPROVEMENT IN THE DESIGN OF A CURVED SLOTTED GENEVA WHEEL, BY INTRODUCING AN OFFSET TO THE CURVED SLOT. THE OFFSETTING TECHNIQUE, WHICH DOES NOT ALTER THE KINEMATIC CHARACTERISTICS OF THE MECHANISM, MODIFIES THE SHAPE OF THE SLOT. THIS DEVELOPMENT PROVIDES AN IMPORTANT TOOL FOR DESIGNING A SIMPLE, PRACTICAL AND RELIABLE INTERMITTENT MOTION GENERATING MECHANISM WITH EXCELLENT KINEMATIC CHARACTERISTICS.