JPH01245307A - Non-contacting type digitizer - Google Patents

Abstract

PURPOSE:To allow a non-contacting type digitizer to execute operation similar to the pencil scanning of a contact type digitizer and to improve operability by allowing a light pen, etc., to touch a display graphic on a graphic display to specify an intersecting line. CONSTITUTION:A light pen or a cursor 13 is included in the graphic display 12 and an operator touches a specified position with a light pen point while observing a display graphic to specify various areas or an intersecting line. An interchange processor 14 executes the interchange processing of working data based on said specification. At the time of specifying an intersecting line on a position decided to be independently worked about the applied graphic, the operator touches the specified position 2a with the light pen or cursor 13. Consequently, specified data are extracted, an intersecting line passing the point is calculated and only the specified intersecting line is checked by the operator by coloring or ON/OFF operation. When the specification of the intersecting line is checked, the NC data of the intersecting line are formed and stored.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a digitizer that digitizes model shapes and creates NC programs.

BACKGROUND OF THE INVENTION Conventional non-contact digitizers do not have a stylus that comes into contact with the surface of a model, so pencil scanning, which involves holding a stylus by hand to specify a surface position, is not possible.

Problems to be Solved by the Invention The pencil scanning described in the conventional technology is used to rough-cut the intersection line first in order to reduce the cutting load and shorten the cutting time when machining molds, etc. This is an effective scanning method. Therefore, there is a problem in that the performance of the digitizer cannot be utilized without this function.

The present invention has been devised in view of these problems of the prior art, and its purpose is to enable a non-contact digitizer to perform a function similar to pencil scanning on a graph ink display.

Means for Solving the Problems In order to achieve the above object, the non-contact digitizer of the present invention includes a tracer head having a non-contact sensor, and a digitizing control that creates NC shape data using scanning data based on the output signal of the tracer head. The apparatus includes a graphic display for displaying digitizing data, and an exchange processing apparatus for performing exchange processing on processed data based on intersection line designations made by an operator while looking at the model shape displayed on the graph ink display. It consists of

The model surface data collected by the action digitizer is displayed three-dimensionally on a graphic display, and the operator looks at the displayed figure, determines where intersection lines need to be specified, and then specifies the intersection lines using the attached light pen or cursor. Then, the specified data is extracted in the exchange processing device, the intersection line passing through the specified point is calculated, and only the specified intersection line is displayed on the display figure in color or blinking, and the operator is asked to confirm, making sure there are no mistakes. For example, tolerance processing is performed within the digitizing control device so that the error falls within an allowable error range, and NG data of intersection lines corresponding to pencil scanning of a contact type digitizer is created and stored.

Embodiment An embodiment will be described with reference to the drawings. In Fig. 1, an X cut into bed 1 using a well-known digitizer
A model table 3 to which a model 2 is attached is movably placed on the sliding guide surface in the axial direction, and is X-axis controlled by an NC. Rectangular columns 4 are erected on both sides of the bed 1, and a main shaft R6 is movably placed on the sliding guide surface in the Y-axis direction of a crossbeam 5 attached to the column 4, and is controlled by an NC in the X-axis. . A tracer head quill 7 is provided on the spindle head 6 so as to be movable in the Z-axis direction, and is controlled by an NC. The tracer head 9 attached to the tip of the tracer head quill 7 has two sensors A and B tilted back and forth in the direction of travel at an optimal angle for light reception, and two sensors A and B are mounted in the Y-axis direction to detect the position of one point on the model. installed side by side. Sensor A.

B can use, for example, the H3065 type optical distance sensor manufactured by Hamamatsu Photonics Co., Ltd., which irradiates the object with a pulsed infrared LED light beam through a projection lens and collects the reflected light. is irradiated onto the position detection element using a light receiving lens, and is calculated in the controller based on the output position signal of the detection element corresponding to distance information to the target object, and an analog voltage corresponding to the distance is output.

Then, sensors A and B are automatically selected depending on the direction of travel and whether the slope is uphill or downhill, and the Z-axis is controlled so that the output voltage of sensor A or B is always a constant value (for example, zero volts). 31
1 Is it a digitizing system that creates NC shape data from constantly changing scanning data on the L, Y, and Z axes? '31
A device 11 is installed near the bed l. Furthermore, a graph ink display 12 with a keyboard 12a for displaying digitized data is installed near the digitizing control device. A light pen or cursor 13 is attached to the graphic display 12, and by looking at the displayed figure and touching the tip of the light pen to a designated position, it is possible to designate an area or a line of intersection. An exchange processing device 14 is provided which performs exchange processing on the processed data based on this intersection line designation.

Next, the data processing procedure will be explained with reference to the flowchart shown in FIG. In step S1, the model surface data collected by the digitizer causes the graphic display 12 to show a three-dimensional representation of the surface of the model in step S2. In step S3, the operator looks at the displayed figure and determines whether a part needs to be displayed, and if yes, in step S4, the operator specifies the area where the part is to be displayed using the light pen or cursor 13. In step S5, the designated area is displayed, and the process moves to step S6. Also, if the answer is NO in step S3, the process directly proceeds to step S6, and in step S6 it is determined whether or not it is necessary to change the display angle.If YES, in step S7, the angle specification is input using the keyboard 12a, and in step S8 will be displayed at the specified angle. In step S9, for example, in the case of a displayed figure as shown in Fig. 3, the operator specifies an intersection line at a part where the operator has judged that there is a large machining allowance and a large addition, so it should be processed separately first. . To specify the intersection line, place the tip of the light pen or cursor 13 on the position 2a on the scanning trajectory where you want to specify the intersection line. Next, in step 310, specified data is extracted, and an intersection line passing through this point is calculated, and step S
In 11, only the designated intersection line is displayed in color or blinks to ask the operator for confirmation. In step S12, it is determined whether the intersection line designation is acceptable, and if no, the process returns to step S3 and the procedure is repeated. If YES, tolerance processing is performed in step 313, NC data of the intersection line is created in step 314, and the data is stored in step S15. Then, the process returns to step S2 and the above-described procedure is repeated.In step S9, the intersection line at the position 2b at which the next intersection line is to be specified is again specified using the light pen or cursor 13. In this way, the intersection lines are designated one after another, and the NC data of the intersection lines is completed.

Effects Since the present invention is configured as described above, it produces the effects described below.

Since the intersection line is specified by placing a light pen or cursor on the displayed figure on the graphic display, the same kind of pencil scanning that can be done with a contact type digitizer can be performed with a non-contact type digitizer, improving operability. .

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of the present invention, FIG. 2 is a rough flowchart for explaining data processing procedures, and FIG. 3 is an explanatory diagram showing displayed figures on a display. 9...Tracer head 11...Digitizer control device I2...Graphic display A, B...Sensor

Claims (1)

[Claims] (1) A tracer head (9) having non-contact sensors (A, B), a digitizing control device (11) that creates NC shape data from scanning data based on output signals of the tracer head, and displays the digitizing data. The graphic display includes a graphic display (12), and an exchange processing device (14) that performs exchange processing on machining data based on an intersection line designation made by an operator while looking at the model shape displayed on the graphic display. A non-contact digitizer that performs the same function as Pecil scanning.