JPH06143090A - Nc data origination system - Google Patents

Abstract

PURPOSE:To enable personal errors at the time of inputting to be lessened by letting a work process which is inputted in accordance with the dimensional allowance for an indicated work area, have one to one correspondence to the attribute mark by means of an attribute addition system and a CAM system. CONSTITUTION:A CAM system 13 to which the output of an attribute addition system 12 and the out-put of a tool data base 14 are introduced, selects a tool required by the processing by referencing the data stored in the tool data base 14, when a work area indicated by the attribute mark is processed in accordance with a work process to which addition is made by the attribute addition system 12. And NC data for the process is prepared, in which an indicated work area is processed in accordance with a corresponding work process with the selected work tool used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC data creating system for creating NC data using a CAM system based on shape data created by a CAD system.

[0002]

2. Description of the Related Art Conventionally used two-dimensional machining NC data creation systems have been performed according to the following procedure when a machining target is a mold. That is,
(1) Read shape data indicating the shape of the mold. (2)
The processing accuracy for each processing area is read from the drawing indicated by the shape data. (3) Set required initial data. (4) Start the CAM system. (5) One machining method is selected from three machining methods of pocket machining, profile machining, and area mill machining.
(6) Determine the machining process. (7) Designate a machining area for each machining process. (8) Select a processing tool. (9) Set machining conditions such as the cutting speed of the machining tool. (10) Based on the above settings, selection, determination and designation, NC data is created using the CAM system.

[0003]

However, when the above system is used, the information indicated by the shape data is only the two-dimensional graphic information and the two-dimensional coordinate information. Since it was necessary to input the information required for processing by confirming the above, there were many input items, and it was easy to make an error in the input. In addition, since it is necessary to specify a processing area for each processing step, when the processing areas are duplicated, a situation such as omission of input occurs.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an NC data creation system capable of reducing errors in input.

[0005]

In order to solve the above-mentioned problems, the NC data creation system of the present invention uses the shape data created by the CAD system to
It is applied to an NC data creation system that creates NC data in three-dimensional machining, and the machining area in the shape data is designated using an attribute mark, and the machining process input according to the dimensional tolerance of the machining area designated by this attribute mark is also used. An attribute addition system that adds the attribute marks in association with each other, a tool database that stores the characteristics of these machining tools as tool information for each machining tool, and the machining area designated by the attribute mark as the designated machining area, When the machining process added in association with the attribute mark is the corresponding machining process, the machining tool for machining the designated machining area according to the corresponding machining process is selected by referring to the tool information, and the selected machining tool is selected. N for machining the designated machining area according to the corresponding machining process using
A CAM system for creating C data is provided.

[0006]

[Operation] Processing area (designated processing area) by attribute mark
Is added and the machining process (corresponding machining process) of the designated machining region is added in association with the attribute mark, that the designated machining region and the corresponding machining process are associated with each other using the attribute mark as an index. Means

Therefore, the CAM system first selects a machining tool for machining the instructed machining area according to the corresponding machining process using the attribute mark as an index by referring to the tool information. Then, NC data for machining the designated machining area according to the corresponding machining process is created using the selected machining tool.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the NC data creating system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an electrical configuration of an embodiment when the present invention is applied to an NC data creating system for creating NC data of a die.

In the figure, the CAD system 11 is a block for sending out shape data 21 indicating the shape of the mold, and this shape data 21 is guided to the attribute addition system 12.

The attribute addition system 12 includes, as its constituent elements, an input means for inputting a selected machining process and a display device for displaying the shape, and each of the machining areas of the mold indicated by the shape data 21. The block is a block for designating using an attribute mark (described in detail later) and adding a machining process selected according to the dimensional tolerance of the machining region designated by the attribute mark in association with the attribute mark.

In the following, the machining area designated by the attribute mark will be referred to as the designated machining area, and the machining step added in association with the attribute mark will be referred to as the corresponding machining step.

The tool database 14 is a block for storing the tool information described below as a database for each machining tool. The tool information stored in the tool database 14 includes the tool type, the number of tool blades, the tool blade length, the length under the tool neck, the tool taper angle, the tool corner diameter, the uncut margin of the contour, the uncut margin of the bottom surface, and the race machining. The remaining amount, the amount of cutting in the radial direction, the amount of step in the Z direction, the cutting speed corresponding to the material to be cut, and the feed rate corresponding to the material to be cut.

Then, the CAM system 13 to which the output of the attribute addition system 12 and the output of the tool database 14 are guided, processes the machining area designated by the attribute mark according to the machining process added by the attribute addition system 12. At this time, the machining tool required for machining is selected by referring to the data stored in the tool database 14. Then, using the selected machining tool,
N for machining the designated machining area according to the corresponding machining process
It is a block for creating C data. Note that FIG.
Shows a data list of default functions set in the CAM system 13.

Further, FIG. 3 is an explanatory view showing a mold shown by the shape data 21, FIG. 4 is an explanatory view showing a processing step associated with the attribute mark, and FIG. 5 is designated by the attribute mark. FIG. 6 is an explanatory diagram showing the relationship between the processing region and the processing accuracy, and FIG. 6 is an auxiliary diagram for explaining the selection of the processing steps.

Referring to these drawings as necessary,
The operation of one embodiment of the present invention will be described below.

When the shape indicated by the shape data 21 sent from the CAD system 11 is the shape shown in FIG. 3, the attribute addition system 1 from which the shape data 21 is derived.
Digitize the dimensions of each processing area in 2 and the dimension tolerance (indicated by 31, 32) is displayed on the screen that displays the shape.
A graphic including is displayed.

Further, since the machining process corresponding to the dimensional tolerance is also displayed (see FIG. 6), the machining process suitable for the machining region is selected from the displayed machining processes and the selected machining process is input by the input means. Use to enter. Further, the processing area corresponding to the input processing step is designated.

When the setting of the additional condition is completed by the above operation, the attribute adding system 12 creates an attribute mark and associates it with each processing area. As a result, after that, it becomes possible to specify the processing area (designated processing area) by the attribute mark. Further, the input machining process (corresponding machining process) is associated with the attribute mark and added.

The attribute marks generated by the attribute addition system 12 are shown by the symbols 41 to 43 in FIG. 3, and the designated processing area designated by the attribute marks is the attribute marks 41 to 43. The area is indicated by an arrow from.

By repeating the above-described operation, the attribute addition system 12, as shown in FIG. 4, for each attribute mark, performs the corresponding machining process of the designated machining area which is the machining area designated by each attribute mark. Create the data shown. Further, FIG. 5 shows details of the processing accuracy of each of the designated processing areas corresponding to the attribute marks shown in FIG.

As a result of the above operation, the shape data in which each of the designated machining areas is designated by the attribute mark and the data indicating the corresponding machining process corresponding to the attribute mark are CA.
Given to the M system 13.

Therefore, the CAM system 13 automatically selects a machining tool required when machining the designated machining area according to the corresponding machining process by referring to the tool information stored in the tool database 14.

By the above operation, the machining area to be machined is given as the designated machining area, the machining process of the targeted machining area is given as the corresponding machining step, and the machining tool to be used is already determined. From that, CAM
The system 13 uses the determined machining tool and N required when machining the designated machining area according to the corresponding machining process.
The C data 22 is created and sent to the outside. Also, CAM
The system 13 creates a processing instruction document in parallel with the creation of the NC data 22.

The present invention is not limited to the above embodiment,
For the data added in association with the attribute mark,
Although the case of the machining process has been described, as other data, for example, the dimension in the Z direction, the machining accuracy, the machining method, the machining start depth, the coolant information, the presence or absence of island machining in the machining area, the material to be cut, and the setup information It is possible to adopt a configuration in which, etc. are added.

[0026]

The NC data creation system according to the present invention is an attribute addition system for associating a designation of a machining area using an attribute mark and a machining process input according to the dimensional tolerance of the designated machining area with the attribute mark. And using the CAM system, the machining area specified by the machining process associated with the attribute mark is machined using the machining tool automatically selected by referring to the tool information by using the attribute mark as a mark. Since the NC data for creating the input data is created, the number of input items by hand is reduced, so that there is an effect that human error at the time of input can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of an embodiment when the present invention is applied to an NC data creation system that creates NC data of a mold.

FIG. 2 is an explanatory diagram showing a data list of default functions set in the CAM system.

FIG. 3 is an explanatory diagram showing a mold shown by shape data.

FIG. 4 is an explanatory diagram showing a processing step associated with an attribute mark.

FIG. 5 is an explanatory diagram showing a relationship between a processing area designated by an attribute mark and processing accuracy.

FIG. 6 is an auxiliary diagram for explaining selection of processing steps.

[Explanation of symbols]

 11 CAD system 12 Attribute addition system 13 CAM system 14 Tool database 21 Geometry data 22 NC data

Claims (1)

[Claims] 1. An NC for two-dimensional machining by importing shape data created by a CAD system.
In an NC data creating system for creating data, a machining area in the shape data is designated by using an attribute mark, and a machining process input according to a dimensional tolerance of the machining area designated by the attribute mark is associated with the attribute mark. An attribute adding system that attaches and adds, a tool database that stores the characteristics of these machining tools as tool information for each machining tool, the machining area designated by the attribute mark as the designated machining area, and the attribute mark When the machining process added in association with is designated as the corresponding machining process, the machining tool for machining the designated machining region according to the corresponding machining process is selected by referring to the tool information, and the selected machining tool is selected. Create NC data when using the designated machining area to machine the corresponding machining process. NC data creation system characterized by comprising a CAM system that.