JPH03214208A - Copying digitizing device - Google Patents

Abstract

PURPOSE:To accurately form a cornering part by designating a desired corner part where a cornering work is carried out after the surface data is produced by a digitizing point group data processor based on the point group data. CONSTITUTION:A digitizing point group data processor 6 is added and a cornering cutting NC data production part 6f designates a desired corner part to be cut with bite among those corner parts of a working subject surface and produces the NC data on the designated corner part. In regard of the designated corner part, the NC data produced by the part 6f is used in place of the NC data produced by a surface working NC data production part 6d. Thus it is possible to perform the working to carry out the biting through a model surface and the working that uses a tool having an R smaller than a stylus used for a digitizing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a copy digitizing device, and particularly to an improved digital quiz point cloud data processing function.

The present invention can perform three-dimensional measurements such as copying devices, three-dimensional CAD/CAM devices, three-dimensional devices, etc.

<Prior Art> FIG. 8 is a block diagram showing a copying digitizing device according to the prior art. As shown in the figure, digitizer 1
Bring the tracer head 1a into contact with the copying model 10 and move it.

The current position reading section 2 reads movement data of the copying model 10 detected by the tracer head 1a. The digitizer 3 digitally processes the position data to create digitized point group data. The NC data creator 4 creates NC data based on the digitized point group data. This N
The C data is recorded on a proppy disk 5 and used for controlling the NC machine tool 9.

At this time, the above-mentioned scanning digitizing device either outputs the digitized point group data as it is as NC data, or it imports and outputs the offset of the coordinate position of each point as NC data. .

The offset of the coordinate position is, as shown in example or Figure 9, when the stylus diameter of the tracer head is 10 mm and the diameter of the tool (ball end mill, etc.) is 8 m, in order to obtain data for the tool, This means that the data obtained with the stylus is offset one order downward along the plane direction. In general digitizing equipment, the diameter of the stylus for digitizing and the diameter of the ball end mill used for processing are the same, but if the offset function described above is provided, even if the stylus diameter is different from the ball end mill diameter, The tool diameter data can be output.

<Problems to be Solved by the Invention> As described above, in the digitizing apparatus according to the prior art, digitized point group data is taken into NC data either as is or after being offset.

By the way, it is often necessary to provide relief at the concave corners of deep drawing punches and dies, but with conventional digitizing equipment,
Since it is impossible to cut into the model surface,
Hand-finished with corners (kaduzuke).

In other words, even if a corner is formed in the copying model, if the diameter or bending state (radius R of the arc) of this corner is smaller than that of the stylus, the stylus will accurately trace the corner. Therefore, even if the workpiece was machined using NC data created with this inaccurate data, accurate cornered parts could not be formed. Therefore, the corners of the workpiece are finished by hand.

In view of the above-mentioned prior art, the present invention provides a copying digitizing device having a cornering function that creates NC data that can accurately form a cornered part.

Means for Solving the Problems> The configuration of the present invention to solve the above problems is as follows: digitally processing position data obtained by tracing a copying model with a tracer head to obtain digitized point cloud data; In a copying digitizing device that obtains NC data from data, there is a surface data creation section that creates surface data according to the surface shape of the copying model based on digitized point cloud data, and a surface data creation section that creates NC data for processing based on this surface data. NC for surface processing to be created
It is characterized by being equipped with a digitizing point cloud data processing device having a data creation unit and an NC data creation unit for corner cutting that specifies a specific corner and creates NC data for processing the specified corner. shall be.

Effect> According to the present invention having the above configuration, after creating surface data based on the L point group data in the digitized fish school data processing device,
By specifying the corner where you want to perform angular machining, the NC data for angular machining using a tool with a radius smaller than the stylus used for digitizing can be automatically calculated and provided to the NC machine tool.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that parts that are the same as those in the prior art shown in FIG. 8 are given the same numbers, and redundant explanations will be omitted.

As shown in FIG. 1, in this embodiment, a digitizing point cloud data processing device 6 is added to the scanning digitizing device shown in FIG.
is added. The digitizing point cloud data processing device N6 includes a digitizing point cloud data input section 6a, a surface data creation section 6b, a surface data correction section 6c, a surface processing NC data creation section 6d, a figure correction section 6e, and a corner cutting section. It consists of a data creation section 6f.

The surface data creation section 6b includes a digitized point cloud data input section 6.
The digital quiz point cloud data is imported from the floppy disk 5 via a. Then, as shown in Figure 2, a free curve group (Figure 2 (b)) is created from the digitized point cloud data (Figure 2 (a)), and surface data (Figure 2 (C)) is created from this free curve group. ) to form. This surface data is copy model 1
The surface shape corresponds to the 0 surface.

This surface data is corrected by the surface data correction section 6c as necessary.

NC data creation unit 6 for surface machining (1 is the surface data creation unit 6
Based on the surface data created in step b or the surface data corrected by the surface data correction section 6C, a machining path using an arbitrary cutting method and a large amount is calculated to create NC data. In other words, NC data is created based on the surface data to operate the NC machine tool so that the machined shape of the workpiece is the same as the surface shape indicated by the surface data.

Conversely, if you send this NC data to an NC machine tool,
The required machining is performed using the required tool, the workpiece is machined, and the machined shape becomes the surface shape indicated by the surface data.

On the other hand, the NC data creation unit 6f for corner cutting specifies a corner to be cut by cutting into the corner of the surface to be machined, and creates NC data for the designated corner. For the specified corner, NC data created by the corner cutting NC data creation part 6f is used instead of the :Nc data created by the face processing NC data creation part 6d. This will be explained based on FIGS. 3 to 6.

As shown in FIG. 3, the lower corner 31a of the copy model surface 31 is
When the lower corner 31b is also 3R, the stylus 3 of 5R
3, the digitized point group data 32 becomes as shown in the figure.

Based on this digitized point group 21 data 32, surface data 41 shown in FIG. 4 is created. The lower corner 41b of this surface data 41 has a diameter of 5R since the stylus diameter was 5R. As shown in FIG. 5, when the tool 53 used is 5R, the machining NC data 52 is created from the surface data 40. When the tool 53 used moves according to this NC data 52, the surface 51 to be machined is machined. At this time, the lower corner 51a of the surface to be processed 51 is 3R, but the lower corner 51b is 5R.

Therefore, the NC data creation unit 65 for corner cutting creates NC data for machining the lower corner 51b with a 3R tool 63, as shown in FIG. In this way, the lower corner 51b also becomes 3R and has the same shape as the model surface.

Thus, this digitizing point cloud processing device 5I6 outputs the NC data for processing the song and transfers it to the floppy disk 7 or DN.
Machine tool +49 is driven via C (direct NC device) 8.

If there is a design change after the model has been created and you want to modify the surface shape, for example if you want to make the corners of a straight corner rounded as shown in Figure 7, you can modify the shape in the digitized point cloud data processing system W6. The correction unit 6e corrects the surface shape, outputs NC data for processing the corrected surface, and performs reprocessing in the NC machining 8H1ffi9. In this way, the surface can be easily corrected using only computer processing without modifying the model shape.

Furthermore, based on the original data, use the male/female reversal function to create NC data for machining the mating die, or NC data for tools with different diameters.
Data can also be freely output and processed. or,
You can also freely output NC data based on face offset, male/female reversal, and arbitrary cutting conditions.

<Effects of the Invention> As specifically explained above in conjunction with the embodiments, according to the present invention, at the concave corner part: ■ Machining that cuts into the model surface; ■ Machining using a tool with a radius smaller than that of the stylus used for digitizing. , became possible.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a scanning digitizing device according to an embodiment of the present invention, Fig. 2 is an explanatory diagram showing means for creating surface data from point cloud data, and Figs. 3 to 6 are diagrams showing data processing. FIG. 7 is an explanatory diagram showing the state of design change, FIG. 8 is a block diagram showing a conventional device, and FIG. 9 is an explanatory diagram showing coordinate offset. In the figure, 1 is a digitizer, 1a is a tracer head, 2 is a current position readout, 3 is a digitizer, 4 is an NC data generator, 5 is a floppy disk 1, and 6 is a digitized point group data processor I! 'I device, 6a is a digitizing point cloud data input section, 6b is a surface data creation section, 6c is a surface data correction section, 6d is a surface processing NC data creation section, 6e is a figure correction section, 6f is an NC for corner cutting. Data creation section, 7 is a floppy disk, 8 is DNC. 9 is the NC machine tool, 10 is the copying model, 31 is the copying model surface, 32 is the digitizing data, 33 is the stylus used (5R), 41 is the surface data, 51 is the surface to be machined, 52 is the NC data for processing, 53 is the The tool used (5R), 61 is the surface to be machined, 62 is data for corner cutting to cut into the target surface, and 63 is the workpiece (3R) used.

Claims (1)

[Scope of Claim] A copying digitizing device that digitally processes position data obtained by copying a copying model with a tracer head to obtain digitized point cloud data, and obtains NC data from this digitized point cloud data, comprising: A surface data creation section that creates surface data according to the surface shape of the copying model based on the data, and a surface processing NC that creates NC data for processing based on this surface data.
The invention is characterized by comprising a digitizing point cloud data processing device having a data creation section and an NC data creation section for corner cutting that specifies a specific corner and creates NC data for machining the specified corner. A copying digitizing device.