Mechanical design systems :: essays research papers

PROBLEM STATEMENTThe chassis is to engineer a causal agent brass to operate two extrusion rolls in diametrical directions to compress the caramel. The drive arranging consists of a flexible drive system that operates a spine gear drive, which in turn operates the extrusion rolls at equal and opposite speeds. The tycoon source to this design is a five horse power normal torque AC electric motor, in operation(p) at 1160 rpm. The system must be designed to run 24 hours per day, 3 age per week. There will be 4 whoresons is the drive system. The shaft that is being driven by the flexible drive system directly is to be called shaft A, for design reference. The extrusion rolls shafts are to be called shaft B1 and B2, for design reference. The last shaft C is in the system only to arise the direction of rotation of one of the extrusion roll shafts. The speed of shaft A is to be determined by the designer. The speed of the extrusion rolls is to be 200 rpm. When designing this dri ve system calculate all forces, support expectancies and stresses for both systems. The centerline distance from motor shaft to shaft A is to be 72 inches.2DESIGN DECISIONSWhile designing this quadruple drive system there are many decisions to be do in order to successfully design the system according to the fuss statement. The first is decision making whether to use a belt drive or a bowed stringed instrument drive one would realize that the system is operating at fairly low speed so a chain would be ideal. The next step to designing this system is to consider and break up a speed for shaft A. Factors must be considered while deciding the speed of shaft A. The factors are that the speed of shaft A should be high enough so that the speed ratio of the gears is large enough, so that the gear sizes make a large enough distance surrounded by extrusion rolls. When designing this system one would choose around 480 rpm. use the rpm out of the flexible drive one would select the s ubdue gears for the application. Which the designer will find is a difficult task considering butt on stress. When choosing the proper chain size and sprockets one will find that a number 40, 19 tooth n1 and a 45 tooth n2 are optimal agate line components and get you fairly close to the desired 480 rpm.