Ensure that the tool reasonable method durability

The first method is based on the principle of a single workpiece to develop a minimum durability, called the maximum productivity Durability: The second method is the method  polycrystalline diamond  lowest cost per work step to develop durability principle, known lowest cost Durability: the third method is based on the profit obtained per unit of time to develop maximum durability, called the maximum profit durability.
Analysis shows that the three following  grinding wheel  exists between durability, namely the production of general use of the lowest cost durability, and only when the production task is urgent, or an imbalance in the production of the weak link when it is used in the highest productivity durability.