JPH06332516A - Digitization data editing device and method therefor - Google Patents

Abstract

PURPOSE:To easily edit a little roundish square machining digitization data into a sharp square shape. CONSTITUTION:A square digitization data editing means 9 decides the shape of the roundish machining digitization data stored in a digitization data storage means 2 within an editing range of a square machining area and then edits a little roundish square shape into a sharp square shape based on the square ridgeline supplied from a square lidgeline input means 10 and the editing range data on a square machining locus supplied from a square editing range input means 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digitizing data editing device and method for converting digitizing data obtained by scanning a master model shape to create an NC (numerical control) machining program.

[0002]

2. Description of the Related Art Conventionally, a method for producing a mold including a free-form surface has been performed by using a digitizer device capable of measuring the shape of the master model by scanning the shape of the master model in advance. Shape data is obtained by measuring the shape. From the shape data, the stylus radius of the stylus, which is the measuring element of the digitizer device, and the tool radius amount of the machining tool are offset, and tool center data capable of mold machining with the tool is created. If necessary, the tool center data is displayed on the graphic display screen to visually check for data disturbance due to some cause. When the irregularity is detected, the die machining data is created by the digitizing data processing device capable of editing the point information forming the tool center data and creating the correct desired tool center data. As described above, there is a method of performing die processing using the created processing data. FIG. 6 is a block diagram showing an example of the digitized data processing device described above. Digitizing data (hereinafter referred to as measurement digitizing data) DD representing a master model shape from a digitizer device (not shown) is stored in the digitizing data storage means 2 via the digitizing data input means 1. The measured digitized data DD is read from the digitized data storage means 2 to the digitized data offset means 3, and is offset according to the tool shape data and the stylus shape data DS input via the stylus shape data input means 4 to be the surface of the master model. Digitized data expressing the shape (hereinafter referred to as offset digitized data) DO
It is said that Further, the offset digitizing data DO is offset according to the tool shape data and the tool shape data DT input through the stylus shape data input means 4, and digitized data (hereinafter referred to as machining digitized data) DP that expresses the movement trajectory of the tool. To be done. The offset digitized data DO and the processed digitized data DP are stored in the digitized data storage means 2. The processed digitized data DP is read from the digitized data storage means 2 to the digitized data display means 5 and displayed on the graphic display screen. The processed digitized data DP is read from the digitized data storage means 2 to the digitized data editing means 6, and the disturbed portion of the processed digitized data DP is detected while observing the processed digitized data DP displayed graphically. Edit information for editing this disordered portion is input through the edit information input means 7, and the processed digitized data DP is converted into the digitized data without disturbance (hereinafter,
Edited into a digitized data (DS) and stored in the digitized data storage means 2. Then, the edited digitized data DS is read from the digitized data storage means 2 to the digitized data NC program conversion means 8 and converted, and an NC machining program is created and output.

[0003]

However, in the case of the mold processed by the mold processing data created by the conventional mold processing apparatus, the originally sharp corner shape becomes a slightly rounded corner shape. There was a drawback that there is.

There are two possible causes for this. The first is the case where the corners of the master model representing the mold shape are defective and the points that were originally sharp are chipped for some reason or are already slightly rounded when the master model was created.
That is, the measured digitized data obtained by measuring from the master model with the digitizer device is already rounded, and as a result, the processed digitized data created by the digitized data processing device from the measured digitized data is also the DP of FIG. It becomes slightly rounded as shown in. Therefore, there is a problem that the mold processed by the processed digitizing data is also slightly rounded. Two
Secondly, the accuracy of the measured digitized data obtained by measuring with a digitizer device from the master model representing the die shape is low, and the originally measured sharpened rectangular shaped measured digitized data is slightly rounded. That is, the processed digitized data created by the digitized data processing device from the measured digitized data is slightly rounded as shown in DP of FIG. Therefore, there is a problem that the mold processed by the processed digitizing data is also slightly rounded.

As described above, in order to edit the slightly rounded square shape into the original sharpened square shape, the digitized data editing means 6 is used. However, the slightly rounded square shape is used. Since it is composed of a large number of points, it often takes too much time for editing, and in reality, editing is often impossible.

The present invention has been made to solve the above problems, and an object of the present invention is to easily edit processed digitized data having a slightly rounded square shape into a sharp square shape. It is to provide a digitized data editing device and a method thereof.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a digitized data editing method in a digitized data editing apparatus, and the above object of the present invention is to provide the slightly rounded processed digitized data having a square shape. From the data indicating the range in which the ridgeline of the square shape and the slightly rounded square shape are desired to be edited into a sharp square shape, the shape within the edit range in contact with the slightly rounded square shape and the ridgeline is obtained. This is achieved by a digitizing data editing device that edits a slightly rounded rectangular shape into processing digitized data having a pointed angular shape.

[0008]

In the digitizing data editing apparatus of the present invention, when the processing digitizing data for processing a slightly rounded square shape is created due to a defective shape of the master model or a measurement error of the digitizer apparatus, the square shape ridge line input means is used. From the ridge line from and the editing range data from the rectangular shape editing range input means, in the rectangular shape digitizing data editing means,
Machining the original sharp corner shape By editing the digitized data, it is possible to process the sharp corner shape with high accuracy.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an example of the digitized data editing apparatus of the present invention in correspondence with FIG. 6, and substantially the same elements will be assigned the same reference numerals and explanations thereof will be omitted. In this embodiment, a rectangular ridge line input means 10 for inputting a three-dimensional curve indicating a rectangular machining trajectory and the ridge line of the rectangular shape,
Square shape edit range input means 11 for inputting data showing the edit range of the square shape machining locus, and square shape digitize data editing for editing the work digitizing data based on the inputted data showing the three-dimensional curve and the edit range. Means 9
6 is different from the conventional digitized data editing apparatus shown in FIG. The measured digitized data DD from the digitizer device is stored in the digitized data storage means 2 via the digitized data input means 1,
The digitized data offset means 3 reads the processed digitized data DP including a slightly rounded square shape, and the processed digitized data DP is stored in the digitized data storage means 2.
Then, the processed digitized data DP is read from the digitized data storage means 2 to the rectangular shaped digitized data editing means 9, and the ridge line W of a predetermined angular shape is further inputted from the rectangular shaped ridge line input means 10 to the editing range of the rectangular shape. The data R shown is inputted from the rectangular shape editing range input means 11 to the rectangular shape digitizing data editing means 9, and the processed digitizing data DP for processing a slightly rounded rectangular shape is digitized data for processing a sharp angular shape (hereinafter referred to as a corner). The data is edited into shape digitizing data) DN and stored in the digitizing data storage means 2.

In such a structure, an operation example thereof will be described with reference to the flowcharts of FIGS. 2 and 3 and the explanatory view of FIG. The three-dimensional curve indicating the rectangular ridge W is input by the rectangular ridge input means 10 (step 1). In the rectangular shape editing range input means 11, the ridge line W which is the data R described above.
In response, the processing range data R1 on the scan start side and the processing range data R2 on the scan end side are input (step 2). Based on the data input in step 1 and step 2, the rectangular digitizing data editing means 9 performs the following processing. That is, data Ln for one scan (a line passing through a black dot in FIG. 4) is input from the processed digitized data DP (step 3), and an intersection C1 between the plane F1 including the input one scan data and the ridge W is obtained (step 4). ). It is determined whether or not the intersection C1 is obtained (step 5), and if not obtained, the process proceeds to step 11.
If the intersection point C1 is obtained, the intersection point C1
It is assumed that a circle CR1 having a radius of the start side processing range data R1 centered at and a circle CR2 having a radius of the end side processing range data R2. The first contact point T1 is determined on the assumption of a straight line in the circle CR1 that is in contact with the data Ln on the scan start side (step 6). Similarly, the second contact point T2 is obtained by assuming a straight line in the circle CR2 that is in contact with the data Ln on the scan end side (step 7). First contact T1 and intersection C
The line segment connecting 1 is Ln1, and the line segment connecting the intersection C1 and the second contact point T2 is Ln2 (step 8). From the start point of the scan data Ln to the first contact T1 is Ln3,
Ln from the second contact T2 to the end point of the scan data Ln
4 (step 9). Scan data Ln to Ln
3, Ln1, Ln2, Ln4 (step 1
0). It is determined whether or not the scan data Ln is the final scan (step 11), and if it is not the final scan, the process returns to step 3 to perform the same process for the data of the next scan, and if it is the final scan, the entire process ends.

Further, in the above embodiment, the intersection C2 at which the circle CR1 intersects with the data Ln on the scanning start side is obtained in step 6, and the circle C1 is similarly obtained in step 7.
Intersection C3 where R2 intersects with the data Ln on the scan end side
And the line segment connecting the intersection point C2 and the intersection point C1 is set to Ln1 and the line segment connecting the intersection point C1 and the intersection point C3 is set to Ln2 in step 8, the same effect as the above embodiment can be obtained.

FIG. 5 shows an example in which the digitized data editing apparatus equipped with the method for editing rectangular shapes of the present embodiment edits the processed digitized data having a slightly rounded shape into the processed digitized data having a sharp corner. Is shown.

[0013]

According to the digitizing data editing apparatus having the square shape editing method of the present invention, the processed digitizing data for processing the slightly rounded square shape due to the defective shape of the master model or the measurement error of the digitizer is created. If you do, you can easily process the original sharp corners without having to edit each point of the scan with a slightly rounded corner, which takes a lot of time with the editing function. The data can be edited and high-precision processing of sharp corners is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a digitized data editing apparatus provided with a digitized data editing method of the present invention.

FIG. 2 is a flowchart illustrating a digitized data editing method of the present invention.

FIG. 3 is a flowchart for explaining the digitized data editing method of the present invention, which is a continuation of the flowchart shown in FIG.

FIG. 4 is a diagram showing processed digitized data for explaining an operation example of a square shape editing method of the present invention.

FIG. 5 is a diagram showing an example of a processing result of a square shape editing method of the present invention.

FIG. 6 is a block diagram showing an example of a conventional digitized data editing device.

FIG. 7 is a diagram showing processed digitizing data in a slightly rounded rectangular shape.

[Explanation of symbols]

 1 digitize data input means 2 digitize data storage means 3 digitize data offset means 4 tool shape data, stylus shape data input means 5 digitize data display means 6 digitize data editing means 7 edit information input means 8 digitize data NC program converting means 9 square shape Digitizing data editing means 10 Square shape ridge line input means 11 Square shape editing range input means

Claims (3)

[Claims] 1. A digitizing data editing device for inputting digitizing data obtained by scanning a master model shape and converting the digitized data to create a processing locus for processing a workpiece. A rectangular ridge line input means for inputting, a rectangular shape edit range input means for inputting data indicating an edit range of the square shape machining locus, and the inputted square shape machining locus for indicating the rectangular ridge line. A digitizing data editing device, comprising: a rectangular digitizing data editing unit that edits processing digitizing data based on a three-dimensional curve and data indicating an editing range of the processing trajectory of the rectangular shape. 2. The digitizing data editing apparatus according to claim 1, which inputs digitizing data obtained by scanning a master model shape and converts the digitizing data to create a machining trajectory for machining a workpiece. In the editing method, the rectangular shape digitizing data editing means obtains an intersection of a ridge and a plane including data for one scan of the processing digitizing data, and processing digitizing on the scanning start side of the editing range from the intersection. First, assuming a tangent to the data
The step of obtaining a contact point, the step of obtaining a second contact point by assuming a tangent line from the intersection to the machining digitizing data on the scanning end side of the editing range, the start point of the data for one scan of the machining digitizing data, and the above A line connecting the first contact point, a line connecting the first contact point and the intersection point, a line connecting the intersection point and the second contact point, and a second contact point and an end point of data for one scan of the processed digitizing data. Replacing the data for one scan of the processed digitized data with a connecting line,
A method for editing digitized data, characterized by editing the processed digitized data. 3. The digitizing data editing apparatus according to claim 1, which inputs digitizing data obtained by scanning a master model shape and converts the digitizing data to create a machining path for machining a workpiece. In the editing method, the rectangular shape digitizing data editing means obtains a first intersection between a ridge and a plane including data for one scan of the processing digitizing data, and the editing range centered on the first intersection. Assuming a circle having a radius of, a step of obtaining a second intersection point to the machining digitizing data on the scanning start side of the circle, a step of obtaining a third intersection point to the machining digitizing data on the scanning end side of the circle, Connect the start point of the data for one scan of the processed digitized data and the second intersection point A line, a line connecting the second intersection and the first intersection, a line connecting the first intersection and the third intersection, and a line connecting the third intersection and the end point of data for one scan of the processing digitizing data And replacing the data for one scan of the processed digitized data according to the above method, and editing the processed digitized data.