JPH0558854B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a trajectory display method for machining simulation in an HC device or an automatic program creation device, and relates to a machining method that can select and display any one of a material or a tool in movement. Concerning trajectory display methods in simulation.

(Technical background of the invention and its problems) Conventionally, when displaying a tool path in a machining simulation using an NC device or a program creation device, the material to be machined is displayed in a fixed state as a still image, and the material is not processed. The tool to be used is now displayed as it moves (video processing). In order to confirm the relationship between the above material and the tool, first display the entire range of the material, and in order to confirm the fine movements and interference of the tool edge,
It is necessary to repeat the operation of sequentially enlarging and displaying parts of the material several times to check the entire range of the material. FIG. 6 is a diagram showing an example of displaying such a tool trajectory. For example, a material 20 to be processed and a tool (not shown) are displayed on a display device 7 such as a CRT.
is displayed, and the part surrounded by dotted lines in the figure is an enlarged display part 1 that is divided to check the fine movement and interference of the cutting edge of the material 20 and the tool 21.
1, 12, and 13 are shown. FIG. 3 shows one of the enlarged display portions 11 to 13 being enlarged and displayed on the display device 7. As shown in FIG. The conventional tool trajectory confirmation method as described above will be described below with reference to FIGS. 6 and 3.

As shown in FIG. 6, on the entire display screen where the entire range of the material 20 is displayed as a still image, the material 20
It is not possible to check the fine movements and interference of the cutting edge of the tool. Therefore, in order to check the fine movements and interference of the cutting edge of this tool, select the enlarged display parts 11 to 13 on the material as described above, enlarge and display each part, and
The display is displayed as shown in the figure, and by moving the cutting edge of the tool 21 along the material 20 in the direction B shown in the drawing, detailed movements and the presence or absence of interference with the material 20 are confirmed. In such a trajectory display method, the above-mentioned enlarged display operation must be performed multiple times, which not only places a burden on the operator, but also
There was a problem in that the entire range of materials could not be checked at the same time.

(Object of the Invention) The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to enable selection and display of either the cutter or the material for each feed axis when displaying the trajectory. The object of the present invention is to provide a trajectory display method in machining simulation that allows continuous confirmation of the tool trajectory over the entire range of the material shape.

(Summary of the Invention) The present invention relates to a trajectory display method in machining simulation, and when displaying a tool trajectory by machining simulation in an NC device or an automatic program creation device, any one of the material shape or the tool is displayed on each machine. Each feed axis can be selected and displayed in a moving manner.

(Embodiments of the Invention) The present invention provides for selecting any one of the cutting tool or the material for each feed axis when displaying a moving image of a tool trajectory on a display device in a machining simulation using an NC device or an automatic program creation device. By making it movable, it is possible to continuously check the tool trajectory for the entire range of the material on one screen.

FIG. 1 is a block configuration diagram showing one embodiment of a device that realizes the present invention, and includes a trajectory display control processor 1 that controls the entire device for trajectory display, and a tool that stores tool trajectory data for the entire range of the material. A trajectory storage section 2, a tool shape memory section 3 that stores data such as the shape and size of the tool used for machining, and a tool trajectory storage section 2 that stores data such as the shape and size of the tool used for machining; A material area control section 4 selects and outputs data for display, and selects data such as tool position, shape, size, etc. from the tool shape data stored in the tool shape storage section 3 for display. Based on the data transferred from the tool display control section 5 and the material area control section 4 and the tool display control section 5, the size of the predetermined area is changed (enlarged or reduced) to display the material. and a display control section 6 that can enlarge or reduce the display of the tool; and a display device 7, such as a CRT, which is driven by the display control section 6 and displays the shape of the material, the tool, and its tool trajectory. It consists of

In such a configuration, the operation of this apparatus will be explained with reference to the flowchart of FIG.

When executing this trajectory display, please use the above NC in advance.
Data such as the shape and size of the tool and the material are read by the device or the automatic program creation device, and are inputted and stored in the tool trajectory storage section 2 and tool shape storage section 3, respectively. Therefore, in order to check the trajectory display, set whether to move the tool or the material for each feed axis of the machine (step SS1).
When the tool movement is set for at least one axis (step S2), the trajectory display control processor 1 reads data for the entire range of the material from the tool trajectory storage section 2, and transfers it to the material area control section 4. The control section 4 transfers this data to the display control section 6 and displays the entire range of the material as shown in FIG. 6 on the display device 7 (step S3). Then, the shape of the material displayed on the display device 7 is confirmed, and the position, size (enlargement, reduction), and visual data of the material are set via the material area control section 4 (for example, as shown in FIG. (one of the enlarged display parts 11 to 13 shown in FIG.
The material area control section 4 and the tool display control section 5
The output data is transferred to the display control section 6, and the material 20 and the tool 2 are displayed on the display device 7 as shown in FIG.
Enlarge and display 1. In Figure 3, the feed axes are X axis and Z axis.
This is a display example of a simulation of a lathe with two axes, and the vertical direction of the display responds to the X-axis of the machine, and the horizontal direction responds to the Z-axis. If tool movement is specified for both the X-axis and Y-axis according to the workpiece position, size, and vision set in step S4, the workpiece 20 is displayed fixedly.
If the cutting edge of the tool 21 moves along the material 20 in the direction B shown in the figure, and material movement is specified on both the X and Y axes, the tool 21 is displayed fixedly, and the material 20 is The desired tool trajectory is displayed so that the tool moves along the cutting edge of the tool 21 in the direction A in the figure (step S5). and,
If you specify tool movement for both the X-axis and Z-axis,
This is exactly the same as in the case of the prior art, and in order to simulate the processing of the entire range of the material, each of the above-mentioned enlarged display portions 11 to 13 must be enlarged and displayed multiple times.

On the other hand, when the movement of the workpiece is set for each feed axis of the machine in steps S1 and S2 above, the entire range data of the workpiece is read from the tool path storage section 2 as described above, and the data is set as shown in FIG. , the shape of the material is displayed on the display device 7, and the cutting edge point of the tool is displayed with a marker or the like on the displayed material (step S6). Then, as described above, the position of the cutting edge point and the size (enlargement, reduction) of the tool are set via the material area control section 4 (step S7), and the tool 2
Position of cutting edge point 1, tool size (enlargement, reduction)
is changed, and the material 20 and tool 21 are displayed as shown in FIG. 3 as described above. In this case, the tool 21 is displayed in a fixed manner, and the workpiece 20 is moved and displayed in the diagram A according to the NC part program input to the NC device or automatic program creation device. Therefore, the tool locus is sequentially displayed over the entire range of the workpiece 20, and this position screen allows the tool position to be displayed over the entire range of the workpiece, allowing the desired machining simulation to be executed.

(Modified example of the invention) In the above-described embodiment, the material and tool displayed on the display device were displayed in two dimensions, but the thickness of the material and the width of the tool are displayed in a three-dimensional manner. It may be possible to do so. FIG. 4 shows a three-dimensional display of the tool 22 and the workpiece 23 on the display device 7. In this case, the tool 22 is fixed and the workpiece 23 is moved in the C direction. There is. Further, although the above-described machining method is directed to two axes, the X and Y axes, movement in the Z-axis direction may be possible in order to simulate machining using a milling machine or the like. FIG. 5 shows how the tool 24 and the workpiece 25 are displayed on the display device 7 in the case described above. In this case, the tool moves in the Z-axis direction (vertical direction), and the workpiece moves along the It is designed to move in the direction.

(Effects of the Invention) As described above, according to the present invention, the tool can be positioned in the center of the display device and displayed in an enlarged manner, and by moving the enlarged material at the same ratio, the tool can be displayed on a single screen. This has the effect of allowing detailed confirmation of the cutting edge locus of the tool continuously over the entire range of the material.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing an embodiment of an apparatus for realizing the present invention, FIG. 2 is a flowchart for explaining the operation of the present invention, and FIGS. 3, 4, and 5 are diagrams showing the present invention. A diagram showing an example of trajectory display in
FIG. 6 is a diagram illustrating a conventional method for displaying materials and tools. DESCRIPTION OF SYMBOLS 1...Trajectory display control processor, 2...Tool trajectory storage unit, 3...Tool shape memory unit, 4...Material area control unit, 5...Tool display control unit, 6...Display control unit, 7... Display device, 11, 12, 13... Enlarged display portion, 20, 23, 25... Material, 21,
22, 24...Tools.

Claims (1)

[Claims] 1. A machining simulation display method for displaying a tool and a workpiece on a display device, moving and displaying them in accordance with an NC part program, and displaying a simulation of how the workpiece is being machined, including: 1. A display method for machining simulation, characterized in that any one of a tool and a workpiece is selectively displayed fixedly on a display device, while the other is displayed in a moving manner. 2. In a machining simulation display method in which tools and workpieces are displayed on a display device, moved and displayed in accordance with the NC part program, and a simulation of how the workpiece is being machined is performed, each feed axis of the machine is 1. A display method for machining simulation, characterized in that any one of a tool and a workpiece is selectively displayed fixedly on a display device, while the other is displayed movably.