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.
The Purpose of Jewels in Watches. When a watchmaker speaks of the jewels in a watch, he or she is not talking about the decorative jewels that may adorn the exterior of the watch case; the watchmaker is referring to jewels which are used within the mechanism of the watch itself. The purpose of the jewels in the watch is to reduce friction. Jewels provide a very smooth, very hard, long-lasting bearing surface at various points within the watch in order to reduce friction and increase running efficiency.