KR950014843A - Electrically conductive three-dimensional high speed precision measuring instrument and its measuring method - Google Patents

Abstract

In order to improve the fact that the conventional electrically conductive three-dimensional measuring instrument leaves the trace on the surface of the object under high speed measurement, measuring the shape of the object under measurement without leaving the trace on the surface of the three-dimensional object under high speed, high precision, and low cost. It is to provide an electrically conductive three-dimensional measuring apparatus and a measuring method thereof.

The electrically conductive three-dimensional measuring device of the present invention is an electrically conductive three-dimensional Cartesian coordinate measuring device is an electrically conductive measuring needle mounted to the movable front end of the measuring instrument, and the measuring point and the tip of the measuring object mounted on the front end of the measuring instrument. A distance measuring means for measuring a distance between the position measuring means, a position setting means for storing a value in which a Z-axis coordinate value of the predicted three-dimensional rectangular coordinates of the measuring point is set to a predetermined value larger, and a distance output from the distance measuring means A first skip signal generator for generating a first skip signal when the value is equal to the value set in the positioning means, and a second skip signal for generating a second skip signal when the measuring needle contacts the measuring point It consists of generating means.

In addition, the measuring method of the present invention comprises the step of setting in advance the expected three-dimensional coordinates of the measuring point of the three-dimensional object to be measured, but setting the Z-axis coordinate value larger by a predetermined value; Moving the measuring needle mounted at the front end at a high speed by moving the X and Y coordinates of the three-dimensional coordinates to move the X and Y coordinate points and the Z axis to a preset position larger by the predetermined value; Generating a first skip signal when the tip of the measuring needle reaches the predetermined coordinate point; Moving the measuring needle at a low speed until contacting the measuring needle according to the generation of the first skip signal; And recognizing the position coordinates at the time of contact as the coordinates of the measuring point according to the generation of the second skip signal generated when the measuring needle contacts the measuring point.

Description

Electrically conductive three-dimensional high speed precision measuring instrument and its measuring method

Since this is an open matter, no full text was included.

Figure 3 is a schematic arrangement of the measuring object and the measurement site for explaining the electrically conductive three-dimensional measuring device and the measuring principle using the same according to an embodiment of the present invention.

4 is a schematic block diagram of a skip signal generator according to the present invention.

5 is an explanatory diagram for explaining a skip function.

6 is a flow chart of measurement using an electrically conductive three-dimensional measuring device according to the present invention.

Claims (8)

An electrically conductive three-dimensional Cartesian coordinate measuring device, comprising: an electrically conductive measuring needle mounted to a movable tip of the measuring instrument, and a distance measurement for measuring a distance between a measuring point of the object to be measured and a tip of the measuring instrument mounted to the tip of the measuring instrument; Means, a position setting means for storing a value in which the Z-axis coordinate value of the expected three-dimensional rectangular coordinates of the measuring point is set to a predetermined value larger, and a value set by the distance position setting means for the distance value output from the distance measuring means. And a first skip signal generator for generating a first skip signal when the same as the second skip signal generator, and a second skip signal generator for generating a second skip signal when the measuring needle contacts the measuring point. Electrically conductive three-dimensional coordinate coordinate measuring instrument. The electric measuring apparatus of claim 1, wherein the measuring device moves at a high speed to the coordinates of the measuring point stored in advance in the positioning unit, and moves from the preset Z-axis position to the measuring point at a low speed. Conductive three-dimensional rectangular coordinate measuring instrument. 3. The electric conduction method of claim 2, wherein the high-speed movement is performed until the first skip signal is generated, and the current coordinate of the measuring device is recognized as the coordinate of the point to be measured when the second skip signal is generated. Dimensional Cartesian Measuring Instruments. 2. The apparatus of claim 1, wherein the distance measuring means comprises: laser light emitting means for emitting a laser to a measuring point, light receiving means for converting the laser light reflected from the measuring point into a voltage signal, and a voltage signal output from the light receiving means. An electrically conductive three-dimensional rectangular coordinate measuring instrument, characterized by comprising a voltage / distance converting means for converting the signal into a distance. Setting an expected three-dimensional coordinate of a measurement point of the three-dimensional object to be measured in advance but setting the Z-axis coordinate value larger by a predetermined value; Moving the measuring needle mounted at the front end at a high speed by moving the X and Y axes of the three-dimensional coordinates to move the X, Y coordinate points and the Z axis to a preset position larger by the predetermined value; Generating a first skip signal when the tip of the measuring needle reaches the preset coordinate point; Moving the measuring needle at a low speed until contacting the measuring point according to the generation of the first skip signal; And recognizing a position coordinate at the time of contact as a measurement point according to generation of a second skip signal generated when the measurement needle contacts the measurement point. . The method of claim 5, wherein the high speed movement step uses a displacement sensor and the low speed movement step uses an electrically conductive measuring needle. 6. The method of claim 5, wherein the first and second skip signals are used as skip function control signals of the numerical control unit. 6. The method of claim 5 wherein the value set greater than the expected Z axis coordinates is about 0.5 mm. ※ Note: The disclosure is based on the initial application.