JPH06289920A - Nc data generation device - Google Patents

Abstract

PURPOSE:To visually recognize a tool graphic on a screen for selecting a tool used in respective working processes. CONSTITUTION:Tool graphic data in a tool form is previously stored in a part of a hard disk drive 5, tool graphic data is read in accordance with the instruction an operator from a keyboard 20 and tool graphic display data is generated. Generated tool graphic display data is displayed at a part of the display screen in a display 19.

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 apparatus used to create NC data for controlling NC machine tools such as machining centers.

[0002]

2. Description of the Related Art In creating an NC program for controlling an NC machine tool such as a machining center, after inputting a machining shape, setup setting for setting the shape and fixed position of a work is performed. Next, the machining order is determined, and the tool used for machining the work is selected. The NC data creation device creates an NC program that defines the operation of the machine tool based on the input data such as the machining shape, setup, machining sequence, and tools. This NC program is recorded on a medium such as an NC tape and supplied to the NC machine tool.

When selecting the tool to be used for each machining step, a plurality of tools having different nominal sizes of tool diameter and tool length are displayed on the display of the NC data creating device for each tool type such as twist drill and reamer. Therefore, N
The C data creation device stores tool data including nominal dimensions for each of a plurality of tools as character and numerical information. Therefore, when selecting a tool, a plurality of numbers representing the tool data including the tool number and the nominal size are displayed on the display for each tool type, and the operator of the NC data creation device selects the tool suitable for the process from the displayed tools. Select the tool number.

[0004]

However, in the above-mentioned conventional NC data creating device, when selecting a tool to be used in each machining step, the tool is specified only by the character and numerical information. Among them, there are tools having the same size but different blade lengths and shapes, and a dedicated tool for machining a special shape cannot be specified only by the nominal size. For this reason, the operator may not be able to accurately distinguish the tool only by the character and numerical information displayed on the display.In such a case, it is necessary to confirm the dimension and shape of the tool with the tool ledger or the tool drawing. There is a problem that the work becomes complicated.

An object of the present invention is to store the shape of each tool as graphic data including the dimensions of each part and to make the shape of the tool selected by the operator into a graphic so that it can be displayed on the display. It is an object of the present invention to provide an NC data creation device capable of accurately and easily selecting an optimum tool in each machining process even when tool data such as nominal dimensions are the same or when a dedicated tool is selected.

[0006]

The NC data creating apparatus of the present invention stores tool data as character and numerical information for each of a plurality of tools in a storage unit when creating NC data, and displays the tool data on a display. In the NC data creating device, the tool graphic data storage means for storing the tool graphic data including the dimensions of each part of the tool shape for each of the plurality of tools, and the tool graphic data of the selected tool from the tool graphic data storage means. Tool graphic display means for reading out, creating display tool graphic data from the tool graphic data and displaying the created tool graphic data on the display.

The tool display means may include magnification conversion means for enlarging or reducing the tool graphic data based on the size of the display range of the tool graphic on the display.

[0008]

In the present invention, the tool graphic data including the dimensions of each part of the tool shape is stored in advance in the tool graphic data storage means for each of the plurality of tools used for machining, and the tool for the selected tool is stored. The tool shape is displayed on the display based on the graphic data. Therefore, when selecting a tool, the operator can confirm not only the tool data as character and numerical information but also the tool shape by a graphic, so that there are multiple types of tools with the same tool data, Even when selecting a tool, the optimum tool for each machining process can be accurately and easily selected.

The tool shape displayed on the display is enlarged or reduced according to the size of the tool obtained from the tool graphic data. Therefore, the entire shape of the selected tool is displayed on the display in an appropriate size even when the actual tool is large or small compared to the standard size.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the configuration of an NC data creating apparatus which is an embodiment of the present invention. The control unit of the NC data creation apparatus 1 is configured by connecting a display 19, a keyboard 20, a printer 21, a tape punch 22 and a mouse 23 to a CPU 2 equipped with a ROM 3 and a RAM 4 via I / O interfaces 11 to 15. ing. Further, the CPU 2 includes a hard disk drive 5 and a floppy disk drive 6, and further CAD via an interface 16 and a network 17.
The device 24 is connected. The CPU 2 centrally controls each input / output device according to a program written in advance in the ROM 3, and the data input / output during this period is temporarily stored in a predetermined memory area of the RAM 4. Display 19 is C
It is driven based on the display data output from PU2. Operation data on the keyboard 20 or the like is input to the CPU 2, tool graphic data is input from the mouse 23, and stored in the hard disk drive 5.

The printer 21 is driven according to the print data output from the CPU 2. The CPU 2 has, as print data, tooling table data in which a tool to be used is described for each process, setup drawing data showing a shape and a fixed state of a work, an NC program, etc.
Prints out the tooling table, setup drawing and NC program. The tape punching machine 22 is driven based on punching data output from the CPU 2. Further, the tool graphic data input from the mouse 23 is stored in the hard disk drive 5. In each of the memory areas of the hard disk drive 5, tool data based on characters such as nominal dimensions and numerical information, tool graphic data representing a tool shape,
The machining shape data and the work position data input by operating the keyboard 20 or the like are stored. The tool graphic data is input not only from the mouse 23 but also from the CAD device 24 via the network 17.

FIG. 2 is a flowchart showing a part of the processing procedure of the control unit of the NC data creating apparatus. This figure shows a processing procedure at the time of selecting a tool after inputting each machining process. When the input of one of the plurality of machining processes to be continuously executed is completed, the CPU 2 displays the tool selection screen shown in FIG. 4 on the display 19. This tool selection screen is hard disk drive 5
It is created based on the character and numerical information of the tool data stored in. Thereafter, the keyboard 20 waits for any operation of the tool graphic display key 20a, the tool setting key 20b or the cursor key 20c (n2 to n).
4) When the cursor key 20c is operated, the cursor position in the tool selection screen is moved (n5).

When the tool graphic display key 20a is operated while the tool selection screen shown in FIG. 3 is displayed, the CPU 2 reads the tool graphic data of the tool corresponding to the cursor position on the display 19 from the CAD device 24 or the hard disk drive 5. (N6), display data of the tool figure is created based on this tool figure data (n7).
Further, the display size of the created display data on the screen of the display 19 and the size of the tool graphic display field and the vertical and horizontal directions are compared (n8, n).
9, n12, n13), if the display size of the tool graphic is larger than the predetermined size of the tool graphic display field, the display data is reduced (n10, n12). On the contrary, when the display size of the tool figure is less than half the size of the display field, the created display data is enlarged (n1
1, n15). Through the above processing of n8 to n15, after the display dimensions of the tool graphic are made appropriate, the display data is supplied to the display 15 and the tool graphic is displayed together with the additional notes in the state shown in FIG. 4 (n16). When the magnification is converted in the vertical direction or the horizontal direction for display in the display field, a note such as "the vertical / horizontal ratio of the tool drawing is 70%" is displayed below the tool graphic.

The tool selection screen consisting of only the characters and numerical information shown in FIG. 3 includes the tool diameter D and the tool length L which are the nominal dimensions of each tool.
Data that more accurately specify the shape of the tool is not displayed. On the other hand, in the tool selection screen shown in FIG.
Since the blade length l is included in the tool figure, the operator can easily specify the tool. The size of the tool graphic display field displayed on the tool selection screen shown in FIG. 4 is made constant based on the standard tool size.

On the keyboard 20, the tool setting key 20
When b is operated, the tool graphic data of the tool number specified by the cursor on the tool selection screen shown in FIG. 3 or FIG. 4 is read (n17), and together with this, the work position data input in advance is read from the hard disk drive 5. (N18). The CPU 2 obtains the dimension of the blade of the tool from the read tool graphic data, and checks whether the blade of the tool collides with the work (n19). When the set tool interferes with the work, a warning to that effect is displayed (n20, n21). If the set tool and the work do not interfere with each other, the tool number of the set tool is stored in the process order (n22).

In the above processing, n2, n6 to n16 correspond to the tool displaying means of the present invention, and n8 to n15 also correspond to the magnification converting means. Further, n17 to n21 also correspond to the interference checking means. By the above processing,
When selecting the tool to be used in each machining process,
A tool figure can be displayed according to the operator's request, and a dimension that does not appear in the nominal dimension of the tool, such as the blade dimension 1 shown in FIG. 4, can be known, and the tool can be easily selected. There is an advantage that can be.

When a tool figure such as a front view and a side view of a special tool is first identified by a plurality of drawings, all of these drawings should be displayed at the same time as shown in FIG. May be. Alternatively, it is also possible to switch and display one screen at a time by operating the display key 20a.

[0018]

According to the present invention, the tool figure can be referred to when selecting the tool to be used in each machining step, and the dimensions not included in the tool data can be easily confirmed on the screen. There is an advantage that the work of selecting a tool can be performed extremely easily.

Further, even when the size and shape of the tool are greatly different, the tool graphic display data can be enlarged or reduced in accordance with the size of the tool graphic display field on the screen, so that the entire tool is always displayed. The shape can be confirmed with an appropriate size.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a control unit of an NC data creating device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a part of a processing procedure of a control unit of the NC data creation device.

FIG. 3 is a diagram showing a display state of a tool selection screen in the NC data creation device.

FIG. 4 is a diagram showing a display state of a tool selection screen which also includes a tool graphic.

FIG. 5 is a diagram showing another display state of a tool selection screen which also includes a tool graphic.

[Explanation of symbols]

 1-NC data creation device 5-Hard disk drive 19-Display 20-Keyboard 20a-Tool figure display key 20b-Tool setting key

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[Procedure amendment]

[Submission date] June 8, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

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[Figure 3]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 4

[Correction method] Change

[Correction content]

[Figure 4]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

Claims (2)

[Claims] 1. When creating NC data, in an NC data creating device that stores tool data for each of a plurality of tools as character and numerical information in a storage unit and displays the tool data on a display, each of the plurality of tools About the tool figure data storage means for storing the tool figure data including the dimensions of each part of the tool shape, the tool figure data of the selected tool is read out from the tool figure data storage means, and the tool figure data for display is displayed from this tool figure data. A tool graphic display means for creating and displaying on the display is provided.
C data creation device. 2. The NC data creation device according to claim 1, wherein the tool graphic display means includes a magnification conversion means for enlarging or reducing the tool graphic data based on the size of the display range of the tool graphic on the display. .