Circle center measuring and calculating method for large scale round workpiece centering operation and centering operation device

Abstract

The purpose of the invention is to provide a high precision circle center measuring and calculating method and device for large scale round workpiece centering operation on middle and large scale numerical control machine tool, the measuring device comprises a base moving platform (1), a limit switch (2), a Y-axis moving platform (3), an X-axis moving platform (4), a mechanical hand wheel (5), a rotating shaft (6), a servo motor (7), a measuring shaft (8), a contact measuring probe (9) and a controller (10), the base moving platform (1) has two degrees of freedom which are the X axis moving platform (4) parallel to a machine base in X-axis direction and the Y-axis moving platform (3) vertical to the machine base in Y-axis direction, the workpiece can be effectively moved to any position, the measuring shaft (8) has two degrees of freedom of which direction is the same with the base moving platform to measure coordinates of a measured point; the rotating shaft can move up and down, so that the measuring probe can move down to the inner side of the round workpiece; the controller (10) is used for controlling motion trail of the measuring probe and is arranged on the surface of a column base, and on the intersection of the base moving platform (1) and the column, the bus of the controller is connected with the servo motor (7) along the column.

Description

technical field [0001] The invention relates to a method and device for measuring and calculating the center of a high-precision circular suit, in particular to medium and large numerically controlled machine tools for assembling high-precision circular workpieces. Background technique [0002] In the field of numerical control, the centering method for two large circular workpieces is as follows: use an edge finder to touch any three points on the interior of one of the hollow circular workpieces, and store the mechanical coordinates of these three points. Into the numerical control system variables, since three points can determine a circle, the coordinates of the center of the circle are calculated through the functions integrated in the numerical control system. Although the above method can determine the coordinates of the center of the circle, in actual application, the error between the calculated coordinates of the center of the circle and the real coordinates is lar...

AI Technical Summary

Problems solved by technology

Although the above method can determine the coordinates of the center of the circle, in actual application, the error between the calculated coordinates of the center of the circle and the real coordinates is large. Large error; secondly, the massive data inside the system leads to a large memory occupation, which is difficult to meet the real-time calculation of the center of the circle; finally, there are few applications of using the edge finder to locate the center of the circle when assembling medium and large CNC machine tools. The positioning of the center of the circle by the device is more limited to the machining center

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