JP2004314208A - Cad/cam device for water jet processing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a CAD/CAM device for a water jet processing machine which reduces labor for making an NC program and improving a working efficiency. <P>SOLUTION: The CAD/CAM device for a water jet processing machine comprises: in a screen 1 thereof, a material selection window 3 for selecting a material; a plate thickness selection window 4 for selecting a plate thickness; a corner section reduced-speed processing setting window 5 and a cutting end section reduced-speed processing setting window 8 for setting whether to have a reduced-speed processing so that each of corner sections c to f and i to l and cutting end sections b and h of a processing graphic 1 is cut with a reduced nozzle feeding speed; an angle setting window 6 for setting a maximum angle of the corner section to which the reduced-speed processing is applied; and reduced-speed distance setting windows 7 and 9 for setting a distance between each of the corner sections or the cutting end sections and a position for starting a speed reduction. Some conditions can be registered in a database in advance. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a CAD / CAM device for a water jet processing machine.
[0002]
[Prior art]
2. Description of the Related Art A CAD / CAM apparatus for a water jet processing machine for creating an NC program for cutting a workpiece by a water jet processing machine based on a processed figure displayed on a screen is already well known.
In a water jet processing machine, when a water jet sprayed from a nozzle penetrates from the front surface to the back surface of the workpiece and cuts the workpiece, the cutting of the back surface is performed with respect to a cutting position of the front surface of the workpiece. The position is delayed with respect to the moving direction of the nozzle. This becomes more remarkable as the thickness of the workpiece increases or as the material becomes harder.
When cutting a workpiece, for example, when cutting a corner bent at a right angle, even if it can be cut at a right angle on the front side, it can not be cut at a right angle from the delay on the back side However, there is a problem that processing accuracy is reduced. In addition, at the end of cutting, there is also a problem that even if cutting lines are connected on the front side, uncut portions are generated on the back side.
In order to solve such a problem, in a conventional CAD / CAM apparatus for a water jet processing machine, an NC program for performing a deceleration process for reducing the feed speed of a nozzle at each corner portion or end portion of a processed graphic by cutting the nozzle at a reduced speed. Can be created (see Patent Document 1).
Conventionally, in an NC program created without designating deceleration at each corner, if the angle of the corner is within a predetermined angle range, deceleration is automatically added to each corner. A method for creating an NC program has also been proposed (Patent Document 2).
[0003]
[Patent Document 1]
JP-A-6-304898 (FIG. 5)
[Patent Document 2]
Japanese Patent Publication No. 7-19171
[Problems to be solved by the invention]
In Patent Literature 1, there is a drawback that a large amount of labor is required to create an NC program because the operator has to specify the deceleration processing at each corner or the end of cutting of the processing graphic each time. .
On the other hand, in Patent Literature 2, since the deceleration processing is automatically added to each corner, the labor of the operator can be reduced. However, even if there is no need for deceleration processing depending on the material and plate thickness of the workpiece, deceleration processing is automatically added to all corners. , Resulting in a decrease in work efficiency.
The present invention has been made in view of the above circumstances, and provides a CAD / CAM apparatus for a water jet processing machine that can reduce the labor required to create an NC program and improve the working efficiency.
[0005]
[Means for Solving the Problems]
That is, the invention according to claim 1 is a CAD / CAM apparatus for a water jet processing machine that creates an NC program for cutting a workpiece by a water jet processing machine based on a processed figure displayed on a screen.
A database that defines at least one of the material and plate thickness of the workpiece is provided, and the database includes a feed rate at a corner portion or a cutting end portion of a processed figure according to the material or the thickness of the workpiece. It is set in advance whether or not to perform deceleration processing to decelerate and cut
A CAD for a water jet processing machine, wherein an NC program for performing a predetermined reduction processing at the corner portion or the end of cutting is created when a material or a thickness of a workpiece to be subjected to the reduction processing is selected. / CAM device.
[0006]
According to a fifth aspect of the present invention, there is provided a CAD / CAM apparatus for a water jet processing machine for creating an NC program for cutting a workpiece by a water jet processing machine based on a processed figure displayed on a screen.
In the screen, set the corner part deceleration processing setting window for setting whether to perform deceleration processing to reduce the feed speed at the corner part of the processing figure and cut, and set the maximum angle of the corner part to which deceleration processing is applied An NC program for displaying an angle setting window and performing a predetermined deceleration process at a corner portion that is equal to or less than the maximum angle set at the corner portion when the deceleration process is set in the corner portion deceleration process setting window. An object of the present invention is to provide a CAD / CAM device for a water jet processing machine, which is characterized in that it is created.
[0007]
According to a sixth aspect of the present invention, there is provided a CAD / CAM apparatus for a water jet processing machine for creating an NC program for cutting a workpiece by a water jet processing machine based on a processed figure displayed on a screen.
In the screen, an end-of-cut portion deceleration setting window for setting whether or not to perform deceleration processing at which the feed speed is reduced at the end of the cut of the processed figure to cut is displayed. An object of the present invention is to provide a CAD / CAM apparatus for a water jet processing machine, wherein an NC program for performing a predetermined deceleration process at the end of cutting when a deceleration process is set in a part deceleration process setting window is created. It is.
[0008]
According to the first aspect of the present invention, since a database that defines at least one of the material and the thickness of the workpiece is provided, if the operator selects the material or the thickness of the workpiece to be subjected to the speed reduction, Based on the data in the database, it is determined whether or not speed reduction is necessary. When the material or the thickness of the workpiece requiring the slowdown processing is selected, an NC program for automatically performing the predetermined slowdown processing is created.
Therefore, the workpiece that does not need to be subjected to deceleration processing is not subjected to deceleration processing, so that it is possible to prevent unnecessary time from being taken and to reduce the labor of the operator.
[0009]
According to the fifth aspect of the present invention, since the corner portion deceleration processing setting window is displayed in the screen, the operator can perform deceleration processing in this window depending on the material of the workpiece or the thickness of the plate. It is sufficient to set whether or not to perform the deceleration processing. Further, when performing the deceleration processing, the maximum angle of the corner portion to which the deceleration processing is applied may be set by the angle setting window. As a result, an NC program for easily performing a predetermined deceleration machining at a corner portion smaller than the maximum angle is automatically created.
[0010]
Further, according to the invention of claim 6, since the window for setting the end-of-cut deceleration processing is displayed on the screen, the operator performs the deceleration processing in this window according to the material of the workpiece or the thickness of the plate. Or not. As a result, an NC program for easily performing a predetermined deceleration process at the end of cutting can be automatically created.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described below with reference to the illustrated embodiment. FIG. 1 shows a monitor screen 1 in a CAD / CAM apparatus for a water jet processing machine, on which a processed figure 2 is displayed. In the illustrated embodiment, an example is shown in which a rectangular plate material having a rectangular hole is cut out, and at a point a, a water jet is jetted from a nozzle of a water jet processing machine (not shown) so that piercing is started. Has become. Then, cutting is performed in the order of points b, c, d, e, and f, and the process returns to the point b again so that a hole is formed inside the point b.
When returning to the point b, the jetting of the water jet from the nozzle is interrupted, and the nozzle is moved without cutting to the point g. At this point g, the jetting of the water jet is resumed and the piercing is performed again. Is Thereafter, cutting is performed in the order of points h, i, j, k, and l, and the cutting is completed by returning to point h again.
Accordingly, in the processed figure 2, the points c to f and i to l are corner portions, respectively, and the points b and h are cut end portions, respectively.
[0012]
In the screen 1, a material selection window 3 for selecting the material of the workpiece and a thickness selection window 4 for selecting the thickness are displayed.
A corner portion deceleration processing setting window 5 for setting whether or not to perform deceleration processing for decelerating the nozzle feed speed and cutting at each of the corner portions c to f and i to l of the processing figure 1; Is displayed, and an angle setting window 6 for setting the maximum angle of the corner portion is displayed, and a deceleration distance for setting a distance between each of the corner portions c to f, i to l and a position at which deceleration is started. A setting window 7 is displayed.
Further, at each of the cut end portions b and h of the processing figure 1, a cut end portion deceleration processing setting window 8 for setting whether or not to perform deceleration processing for cutting by reducing the feed speed of the nozzle; A deceleration distance setting window 9 for setting the distance between the end portions b and h and the position where deceleration starts is also displayed.
[0013]
The CAD / CAM apparatus has a database 11 shown in FIG. 2, in which the material of the workpiece and a plurality of plate thicknesses for each material are set in advance. In addition, for each sheet thickness of each material, a maximum angle of a corner portion to which deceleration processing is applied and a distance between a vertex of the corner portion and a position where deceleration is started are set in advance.
At this time, depending on the material, when the plate thickness is small, there is a case where it is not necessary to perform the speed reduction processing in which the feed speed is reduced at the corner portion or the end portion of the cutting at a reduced speed. In the present embodiment, the database 11 is set so that the maximum angle of the corner portion to which the deceleration processing is applied is not set, so that the deceleration processing is not indirectly performed at both the corner portion and the cutting end portion.
More specifically, in the database 11 of FIG. 2, when the thickness is 6 mm with the SS material which is an iron-based material, the maximum angle of the corner is set to “90 °”. In this case, it is possible to perform deceleration processing at all corners having an angle of 90 ° or less and all cut end portions, and to start deceleration from a position 5 mm before the corner portions and cut end portions. It will be set.
On the other hand, when the sheet thickness of the SS material is 3.2 mm or less, the maximum angle of the corner is not set at all, and in this case, the speed is decelerated at all the corners and at all the cut end portions. This means that no processing is performed.
In addition, about the feed speed of the deceleration processing, the normal feed speed may be gradually reduced to a speed of a predetermined deceleration rate, may be gradually reduced, or may be reduced at once. Is also good. In addition, each corner is accelerated to a normal feed speed after passing the vertex.
[0014]
In the above configuration, when creating the NC program, first, the material of the workpiece is selected from the pull-down menu of the material selection window 3. Since a list of materials already registered in the database 11 is displayed on this pull-down menu, one of the materials is selected. In FIG. 1, the “SS” material is selected.
After selecting the material of the workpiece, the thickness of the workpiece is selected in the thickness selection window 4. At this time, the thickness registered in the database 11 is listed in the pull-down menu of the thickness selection window 4 corresponding to the material of the selected workpiece. That is, when the SS material is selected, eight types of thicknesses from 1.6 to 30 mm shown in FIG. 2 are listed, and the operator selects one of the thicknesses. In FIG. 1, a plate thickness of “9” mm is selected.
[0015]
For an SS material having a thickness of 9 mm, since the maximum angle 90 ° and the distance 5 mm are preset in the database 11, the CAD / CAM apparatus uses the window 5 for setting the speed reduction processing at the corner and the window for setting the speed reduction processing at the end of cutting. In addition to displaying "water edge", which means that deceleration machining is performed, the maximum angle "90" is displayed in the angle setting window 6, and the deceleration distance is displayed in the deceleration distance setting windows 7, 9. Is displayed as “5” mm.
In this state, of the processed figure 2 displayed on the screen 1, the line of the section to which the deceleration processing is applied is displayed in a different color, and in FIG. 1, instead of being displayed in a different color. Are shown in bold lines.
[0016]
In this state, if the set conditions are satisfied, the operator may give a command for creating an NC program to the CAD / CAM device, whereby the CAD / CAM device executes the NC program based on the above-described conditions. Will be created.
More specifically, FIG. 3 shows the movement of the nozzle when the deceleration processing is not performed on the corner m, and FIG. 4 shows an NC program created by the CAD / CAM apparatus under the conditions. It is. G01 XmYm; in FIG. 4 is a command to move to the point m, and G01 Xn Yn; in the next row is a command to move to the point n. Here, the nozzle is not decelerated or accelerated.
[0017]
On the other hand, FIG. 5 shows the movement of the nozzle when performing the deceleration processing on the corner portion m and the cutting end portion n, and FIG. 6 shows an NC program created by the CAD / CAM apparatus under the conditions. G01 Xm-1 Ym-1; in FIG. 6 is an instruction to move from the corner m to the point m-1 which is located by the above distance "5" mm, and G01 Xm Ym M45; in the next line is there. Command to move to point m while decelerating from.
G01 Xm + 1 Ym + 1 M46; in the next row is a command to accelerate and move from the corner m to the point m + 1 which is the above distance "5" mm, and G01 Xn-1 Yn-1 in the next row. Is an instruction to move from the point m + 1 to the next point n-1. This point n-1 is a position "5" mm before the cutting end portion n, and G01 Xn Yn M45 in the next row is a command to move to the cutting end portion n while decelerating therefrom.
As described above, the CAD / CAM apparatus automatically creates an NC program as shown in FIG. 4 when speed reduction is not performed, and automatically generates an NC program as shown in FIG. 6 when speed reduction is performed. Will be created.
In the NC codes M45 and M46, a deceleration, a deceleration gradient, and the like in deceleration machining are programmed.
[0018]
On the other hand, when the operator wants to change the conditions set as described above, the operator can change the respective conditions by using the setting windows 3 to 9. That is, it is a matter of course that the material of the workpiece can be changed by the material selection window 3 and the thickness can be changed by the thickness selection window 4.
In the case where the database 11 is set to perform the deceleration processing by, for example, setting this to “blank” or selecting “no deceleration processing” using the corner part deceleration processing setting window 5. Also, it can be set so that the speed reduction processing is not performed.
Similarly, the maximum angle of the corner portion can be set to, for example, 92 ° by the angle setting window 6, and the distance can be set to, for example, 10 mm by the deceleration distance setting window 7.
[0019]
Further, separately from the corner portion deceleration processing setting window 5 and the deceleration distance setting window 7, the end-end deceleration processing setting window 8, for example, is set to "blank" or "no deceleration processing". By making the selection, even if the database 11 is set to perform the speed reduction processing for the cutting end points b and h, it is possible to set so that the speed reduction processing is not performed. On the other hand, the distance can be set to, for example, 10 mm by the deceleration distance setting window 9.
By the way, in the case where the deceleration processing is not performed at the end of cutting even though the workpiece has a predetermined thickness or more, even if the cutting line is continuous on the surface side of the workpiece at the end of cutting. Since uncut portions can be generated on the back side, the uncut portions can be used as micro joints. That is, it is possible to prevent the product, that is, the processed figure 2 from being completely separated from the workpiece by the microjoint, and after all the work on the workpiece is completed, the fragile microjoint is removed from the workpiece. The product can be easily separated at the part.
The set values set in the corner portion deceleration processing setting window 5, angle setting window 6, deceleration distance setting window 7, end-of-cut deceleration processing setting window 8, and deceleration distance setting window 9 are stored in the database 11 in advance. It is used in preference to the set value, and an NC program is created under this condition.
[0020]
In the above embodiment, both the material and the thickness of the workpiece are set in the database 11 in advance. However, in the case of a dedicated machine having a specific material or thickness, the material and the thickness of the workpiece are different. Needless to say, only one of the sheet thicknesses may be set.
Either one or both of the column of the maximum angle and the column of the distance may be omitted from the database 11, and in this case, the columns are set by the angle setting window 6 and the deceleration distance setting windows 7, 9. It may be set each time.
[0021]
Furthermore, in the above embodiment, the database 11 is provided, but this may be omitted, and a corner speed reduction processing setting window 5 and an angle setting window 6 may be provided instead.
In this case, the operator sets the presence / absence of deceleration processing in the corner part deceleration processing setting window 5, and when the operator sets deceleration processing in the corner part deceleration processing setting window 5, the angle setting The maximum angle of the corner may be set by the window 6.
Further, by providing the end-of-cut portion deceleration processing setting window 8, the operator can set the presence or absence of deceleration processing by the end-of-cut portion deceleration processing setting window 8.
If necessary, deceleration distance setting windows 7, 9 for setting the distance between the corner portion or the end of cutting and the position where deceleration is started are displayed. Can of course be set.
[0022]
【The invention's effect】
As described above, according to the present invention, it is possible to easily obtain an NC program capable of performing a predetermined deceleration process only at a necessary corner portion or a cut end portion, so that the labor of the operator can be reduced and the operation can be reduced. The effect that efficiency can be improved is obtained.
[Brief description of the drawings]
FIG. 1 shows an embodiment of the present invention and shows a monitor screen 1 in a CAD / CAM apparatus for a water jet processing machine.
FIG. 2 is a view showing the contents of a database 11;
FIG. 3 is a diagram showing the movement of a nozzle when speed reduction processing is not performed on a corner m.
FIG. 4 is a diagram showing an NC program created by a CAD / CAM apparatus when speed reduction processing is not performed.
FIG. 5 is a diagram showing the movement of nozzles when performing deceleration processing on a corner portion m and a cutting end portion n.
FIG. 6 is a diagram showing an NC program created by a CAD / CAM device when performing speed reduction machining.
[Explanation of symbols]
1 screen 2 machining figure 3 material selection window 4 plate thickness selection window 5 corner part deceleration processing setting window 6 angle setting window 7 deceleration distance setting window 11 database c-f, i-l corner part

Claims (8)

In a CAD / CAM apparatus for a water jet processing machine, which creates an NC program for cutting a workpiece by a water jet processing machine based on a processing figure displayed on a screen,
A database that defines at least one of the material and plate thickness of the workpiece is provided, and the database includes a feed rate at a corner portion or a cutting end portion of a processed figure according to the material or the thickness of the workpiece. It is set in advance whether or not to perform deceleration processing to decelerate and cut
A CAD for a water jet processing machine, wherein an NC program for performing a predetermined reduction processing at the corner portion or the end of cutting is created when a material or a thickness of a workpiece to be subjected to the reduction processing is selected. / CAM device. In the database, the maximum angle of the corner to which the speed reduction is applied is preset according to the material or the thickness of the workpiece, and the material or the thickness of the workpiece to be subjected to the speed reduction is set. 2. The CAD / CAM apparatus for a water jet processing machine according to claim 1, wherein when selected, an NC program for performing deceleration processing at a corner portion smaller than a set maximum angle is created. In the database, the distance between the top of the corner and the position where deceleration is started is set in advance according to the material of the workpiece or the thickness of the plate. 3. The CAD / CAM apparatus for a water jet processing machine according to claim 1, wherein when a material or a thickness is selected, an NC program for performing deceleration processing from a set distance is created. . An angle setting window for setting the maximum angle of the corner to which the speed reduction processing is applied is displayed in the screen, and the maximum angle set in the angle setting window is used to set the maximum angle. The CAD / CAM apparatus for a water jet processing machine according to any one of claims 1 to 3, wherein an NC program for performing deceleration processing for a corner portion having an angle or less is created. In a CAD / CAM apparatus for a water jet processing machine, which creates an NC program for cutting a workpiece by a water jet processing machine based on a processing figure displayed on a screen,
In the screen, set the corner part deceleration processing setting window for setting whether to perform deceleration processing to reduce the feed speed at the corner part of the processing figure and cut, and set the maximum angle of the corner part to which deceleration processing is applied An NC program for displaying an angle setting window and performing a predetermined deceleration process at a corner portion that is equal to or less than the maximum angle set at the corner portion when the deceleration process is set in the corner portion deceleration process setting window. A CAD / CAM device for a water jet processing machine characterized by being created. In a CAD / CAM apparatus for a water jet processing machine, which creates an NC program for cutting a workpiece by a water jet processing machine based on a processing figure displayed on a screen,
In the screen, an end-of-cut portion deceleration setting window for setting whether or not to perform deceleration processing at which the feed speed is reduced at the end of the cut of the processed figure to cut is displayed. A CAD / CAM apparatus for a water jet processing machine, wherein an NC program for performing a predetermined deceleration process at the end of cutting when a deceleration process is set in a part deceleration process setting window is created. In the above screen, a deceleration distance setting window for setting a distance between the top of the corner portion and the position where deceleration is started is displayed, and the distance set in this deceleration distance setting window is displayed. 7. The CAD / CAM apparatus for a water jet processing machine according to claim 1, wherein an NC program for performing deceleration processing from said distance is created. The CAD for a water jet processing machine according to any one of claims 1 to 7, wherein a line of a section to which deceleration processing is applied among the processing figures displayed on the screen is displayed in a different color. / CAM device.

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