Improvement methods of calculating the required clamping force preparations in changing processing conditions

Changing conditions characteristic of modern multifunctional machines when processing within a single technological operation with one complete machining of workpiece in the adaptation makes various tools within its positions. During the processing of the workpiece undergoing significant changes its geometry, its stiffness is also changed. The resulting elastic deformations, resulting in reduced accuracy of machined surfaces. With a view to obtaining the required precision in the manufacture of parts you must manage the power clamp. But you first must be defined the necessary power, which then enforces the clamping mechanism. The model for CNC axes proposed system right generalized kind of equations of equilibrium existing in space on absolutely solid billet of active forces and moments of forces, in which direction their actions expressed variables cosines guides, and the response required clamping force is the fulcrum. Unlike the currently existing views to take into account the fact that according to the law, the independence of the forces of each one of them contributes to the value of the desired clamping force. Clamping force is the resultant force, drawn from both the full reaction supports, and pairs of forces arising from actions on the support points of the force. For example, milling and turning blanks, fixed accordingly in machine vise and three-jaw chuck, shows the proverbial, but not used in full when calculating devices technique associated with the features of the existing definition in the preset cutting forces, friction clamp and place their applications. While it has been shown that in some cases it is advisable to simplify the decision on processed workpiece system forces replace an equivalent system. In the analytical scheme and the equilibrium equations are introduced not only the distance from the place of the active forces to the places of fastening of the workpiece, but (depending on conditions) dimensions, related either to the clamping elements or to dockable surfaces of blanks. The relationships between these dimensions are defined in cutting force coefficients are part of (one of the factors that depends on imperfections calculation schemas) subjectively assigned and changing in a wide range of safety factor.