PROCESSING CENTER MULTI-AXLE JOINT DEFLECTION LOADING APPARATUS AND INSPECTION METHOD FOR STATIC STIFFNESS DISTRIBUTION

摘要

Disclosed is a processing center multi-axis joint deflection loading apparatus comprising a load-receiving test piece (1) and a load-exerting component (2). The load-exerting component (2) is constituted by a steel ball (2-1), a cap (2-2), a ball socket (2-3), a bent board (2-4), a force sensor (2-5), a connection component A (2-6), and a connection component B (2-7). The connection component A (2-6) is fixedly connected to a blade handle of the processing center; the blade handle is pulled tight within a bored hole on a main axle; and the connection component A (2-6) is connected to a main axle housing via the connection component B (2-7). In a method using the apparatus for an inspection of static stiffness distribution, by means of a multi-axle joint movement, the load-exerting component (2) and the load-receiving test piece (1) are moved to a preset loading position, allowing the normal at a load-receiving point on a load-receiving face of the load-receiving test piece (1) to be aligned with the axis of the ball socket (2-3); with the amount of shift measured by position-shift sensors fitted on the main axle (5), the main axle housing (6), and a working platform (3), and the amount of simulated load measured by the force sensor of the load-exerting component, a stiffness measurement for the load-exertion position under a simulated load is derived; when the load-exertion position is changed by means of a multi-axle joint movement, and the previous steps repeated in sequence, a stiffness distribution under the simulated load is thus derived.