Planar continuous loading testing device for numerical-control movable worktable

Abstract

The invention discloses a planar continuous loading testing device for a numerical-control movable worktable, and belongs to the technical field of machine manufacturing. The testing device comprises an analog numerical-control movable worktable, two identical longitudinal loading devices and a transverse loading device. Loading requirements on the magnitude of a transverse load, the magnitude of a longitudinal load and the magnitude of a torque are required to be met by the loading testing device, wherein the magnitude of the transverse load is controlled through a servo motor; the magnitude of the longitudinal load and the magnitude of the torque are jointly controlled through two servo motors; the magnitude of each load is fed back via a pressure sensor; and closed-loop control on the magnitude of loading force is realized by adjusting the compression amount of a loading spring. By the testing device, a one-way longitudinal load, a one-way torque and a combined load of a longitudinal load and a torque in a plane are applied to the movable worktable; and moreover, the magnitude of the loading force can be accurately controlled.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a plane continuous loading test device for a numerically controlled mobile workbench. Background technique [0002] The mobile worktable of CNC machine tool is one of the important components of CNC machine tool, which has a great influence on the machining accuracy and dynamic performance of the machine tool. At present, the CNC mobile worktable is mainly driven by a servo feed system. In order to meet the performance of the machine tool, it needs to have the characteristics of high positioning accuracy, stable operation, small friction and low inertia. In order to ensure the running accuracy and dynamic performance of the CNC mobile worktable, it is necessary to study the servo feed system, so some relevant experimental verification is required. During the experiment, it is necessary to simulate the loading situation of the mobile workbench. The lo...

AI Technical Summary

Problems solved by technology

Both hydraulic transmission loading and mechanical transmission loading can only achieve fixed-point loading, and it is difficult to carry out follow-up loading; the counterweight method is to fix a certain number of mass blocks at different positions on the workbench, but this can only simulate vertical load loading and cannot be realized Loading in the plane of the table

[0004] Therefore, none of the above loading methods can realize the continuous change of the loading load in a timely and controllable manner according to the plane loading form that the CNC mobile workbench needs to simulate.

Images