Fast locating instrument for numerical control machining original point and positioning method of numerical control machining original point

Abstract

The invention relates to a fast locating instrument for a numerical control machining original point. An upper end conical seat is arranged at the upper end of a fixed rod. The lower end of the fixed rod is connected with a movable rod through a universal connecting piece. A lower end conical seat is arranged at the bottom of the movable rod. An electric conduction plate is arranged in the fixed rod. An X-axis conductor and a Y-axis conductor which are arranged on the bottom face of the electric conduction plate are perpendicular to each other, the crossed point serves as the original point, and the original point is located on the perpendicular axis of the upper end conical seat. An electric conduction probe is arranged in the movable rod. The upper end of the electric conducting probe penetrates the universal connecting piece to be in contact with the bottom face of the electric conduction plate. The axis, in the vertical state, of the electric conduction probe coincides with the axis of the upper end conical seat, the electric conduction probe forms electric conduction loops with the X-axis conductor, the Y-axis conductor and the original point respectively, and display is conducted through a display lamp. According to the locating instrument, the numerical machining original point is positioned through the on-off state between the electric conduction probe and a circuit of the electric conduction plate, installation is convenient, reading and an indicating lamp are visual, operation time of technicians is greatly shortened, work efficiency is improved, and the precision of machined products is ensured.

Description

technical field [0001] The invention relates to a fast locating instrument for a numerically controlled machining origin and a positioning method thereof, which are used for quickly locating a machining origin before finishing machining of a numerically controlled machine tool. Background technique [0002] In CNC machining production, in order to ensure the machining accuracy of the workpiece, it is necessary to first ensure that the machining origin of the machine tool to the workpiece is accurate. The origin positioning of workpiece CNC machining is divided into two processes: tool positioning and machine tool spindle machining origin positioning. At present, these two processes are usually measured with a dial gauge in actual operation. The measurement method is to use a dial gauge to measure whether the distance between multiple positions on the side wall of the tooling and the positioning reference X (or Y) axis on the machine tool is consistent. To determine whether ...

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Problems solved by technology

This method is time-consuming, usually 30-40 minutes

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