Product Development Procedure Activities. 1  Product/ Process Initiation. 2  Determining Requirements and Objectives. 3  Meeting Requirements and Objectives. 4  Design Acceptance. 5  Design Validation and Testing.
An idler gear is a gear wheel that is inserted between two or more other gear wheels. The purpose of an idler gear can be two-fold.Firstly, the idler gear will change the direction of rotation of the output shaft.n idler-wheel drive is a system used to transmit the rotation of the main shaft of a motor to another rotating device, for example the platter of a record-reproducing turntable or the crankshaft-to-camshaft gear train of an automobile.
Spur gears, sometimes referred to as straight-cut gears, are perhaps the most common form of parallel axis gear. The spur gear has a cylindrical shape with teeth cut parallel to the axis.The most common spur gears are external gears, where the teeth are located on the outside of the cylinder.Another variation is internal spur gears where the teeth are cut on the inside of the cylinder.In either case, spur gears are designed to mesh with mating parts located on parallel shafts.The teeth projecting from a spur gear are not straight-sided, as this would not allow for uniform motion.nother variation is internal spur gears where the teeth are cut on the inside of the cylinder. In either case, spur gears are designed to mesh with mating parts located on parallel shafts. The teeth projecting from a spur gear are not straight-sided, as this would not allow for uniform motion.