JPH01300306A - Automatic programming method - Google Patents

Abstract

PURPOSE:To shorten the operating time needed for production of the numerical control NC data by selecting another tool out of a tooling file and producing the NC data for the working of an uncut form in case this uncut form is produced in the working carried out based on the NC data. CONSTITUTION:Both a parts form and a working process are specified and a tool TL1 used for said working process is selected from among a tooling file. Then the NC data (tool path) PL1 is produced so that the working is performed by the tool TL1 with no interference caused with a work W. If an uncut form RMP is caused in the working carried out on the line PL1, another tool TL2 is selected form among the tooling file for production of another tool path PL2 where the form RMP is worked. These two paths PL1 and PL2 are synthesized for production of the NC data for working of the parts form. As a result, the NC data is automatically produced for working of the form RMP and the NC data producing time is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an automatic programming method, and more particularly to an automatic programming method for automatically selecting a tool to be used from a tooling file and creating NC data.

<Prior art> A dialog screen and a function key (soft key) screen are displayed on a display device according to each step of a plurality of data input steps, and a function key (soft key) corresponding to a specific function on one function key screen is displayed. There is an automatic programming system that executes processing according to the function when pressed, and creates an NC program using data input by referring to an interactive screen.

Referring to FIG. 6, such an automatic programming system includes the following steps: (1) a first step of selecting execution of "automatic programming"; (2) a second step of selecting data to be input (step to be executed next). Step.

(3) Third step of selecting the material.

(4) Fourth step of setting surface roughness, (5) Fifth step of selecting drawing format.

(6) Sixth step of inputting the material shape and its dimensions.

(7) Seventh step of inputting the part shape and its dimensions, (
8) 8th step of inputting machine origin and turret position, (9
) Ninth step to select the processing process.

(lO) 1st O step of tool selection and tool data input.

(11) Eleventh step of determining processing conditions.

(12) 12th step of inputting cutting direction; (13) 13th step of inputting cutting range.

(14) The first step is to input the presence or absence of an area to be cut with the same tool.
4 steps.

(15) Fifteenth step of tool path calculation (NC data creation).

According to the instructions, predetermined question screens (dialogue screens) are sequentially displayed on the display screen, the operator is asked to input the necessary data from the keyboard according to the questions, and finally all input data is used to run the NC program ( (NC data) is created. Note that when a tool is automatically selected based on the tooling file, there is no need to perform the tool selection and tool data input in the tenth step.

<Problem to be solved by the invention> By the way, in the NC data created by the above method,
Uncut parts may be left behind. In such cases, conventionally, an operator has created separate NC data for machining the uncut shape according to the automatic programming step. For this reason, there is a problem in that it takes a lot of time to create NC data for processing the uncut shape.

From the above, an object of the present invention is to use an NC method for machining uncut shapes.
To provide an automatic programming method that can automatically create data and shorten NC data creation time.

Means to solve problems〉 FIG. 1 is a schematic explanatory diagram of the present invention.

W is the workpiece whose part shape is specified, TLI, TL2 is the tool automatically selected from the tooling file, PLI
PL2 is a tool path when machining is performed using tool TLI, PL2 is a tool path when machining is performed using tool TL2, and RMP is an uncut shape.

<Operation> After specifying the part shape and machining process, select the tool TLI used for the machining process from the tooling file, and create NC data (tool path) PLI for machining using the tool so as not to interfere with the workpiece W. If there is an uncut shape RMP in machining using the tool path PLI, select another tool TL2 from the tooling file and create a tool path PL2 for machining the uncut shape RMP.
Two tool paths PLI and PL2 are combined to create NC data for part shape machining.

<Embodiment> FIG. 2 is a block diagram of a device equipped with an automatic programming function that realizes the present invention. Reference numeral 521 is a non-volatile memory, and the first area 21a of the memory 21 stores the tool number for each tool in advance. and.

A tool data file is formed by storing the name of the machining process in which the tool is used and tool shape data,
Furthermore, a touring file is stored in the second area 21b of the memory 21. The tooling file consists of tool numbers of multiple tools to be installed on the turret at the same time, tool shape data, tool installation data on the turret, and machining process names to be used. 22 is a graphic display device (CRT), 23 is a processor, 24 is a production board, and 25 is a ROM that stores a control program.

26 is a RAM that stores data input from the operation panel 24, processing results, and created NC data; 27 is an NC data output device that outputs the created NC data to an external storage medium 28 such as a paper tape or a bubble cassette. be.

FIG. 3 is a flowchart of the process of the present invention. below.

The automatic programming process will be explained according to the flowchart in FIG.

From the operation panel 24, follow the dialogue screen for NC lathe processing definition and enter the material, design drawing format, material shape, and its dimensional values (indicated by broken lines in Figure 1(a)), one part shape, and the like as in the conventional method. Input the dimension value (displayed with a solid line), the machine origin and the turret rotation position, and input the machining process.1 For example, input rough machining of the external shape as the machining process (step 101).
). still.

It is assumed that the tooling file stores a plurality of tools having shapes shown in FIGS. 4(a) to 4(h). However, RN is the radius of the cutting edge, AC is the cutting edge angle, AN is the cutting edge angle, XN and ZN are the virtual cutting edge positions, and the cutting edge angle A
The positive direction of C is counterclockwise with respect to the main cutting edge (bold line portion in the figure), and the positive direction of the cutting edge angle AN is clockwise with respect to the main cutting edge.

In response to the input of external rough machining, a tool to be used for the external rough machining is selected from the tooling file. The criterion for tool selection is when the tool used in the specified machining process moves along the part shape.

There is no interference with the workpiece, and there is little uncut material. Therefore, when the processor 23 takes out four tools for rough machining (FIG. 4) from the tooling file and moves them along the part shape, it checks whether they will interfere with the workpiece.

For example, the tool in FIG. 4(c) is used as an element ELI of a part shape.

EL2. When moving along EL3 (FIG. 5(a)), it can be seen that the tool and workpiece interfere at element ELL and element EL3. Therefore, 1. Do not interfere with the workpiece. When the tool is moved to avoid interference,
An uncut shape RMP is generated (see FIG. 5(b)). Similarly, other tools are checked, and a tool with no or a small amount of uncut shape RMP is selected. For example, select the tool shown in FIG. 4(a) (see FIG. 5(c)).

Next, enter the data necessary to create NC data, and
When data creation is instructed, a tool path PLI is created using the selected tool TLI (Fig. 1 (a)) when creating NC data for rough machining so as not to interfere with the workpiece (
See FIG. 1(a), step 102).

Next, the processor 23 determines whether or not there is an uncut shape RMP in the machining using the tool path PLI (step 103), and if it exists, it automatically calculates the uncut shape RMP, and converts the uncut shape RMP into the external shape. Another tool for rough machining is selected from the tooling file using the same procedure as above. In this case, a tool TL2 (FIG. 4(e)) having a different hand (right-hand, left-hand) from the previously selected tool TL1 is selected. Then 1. A tool path PLI (with the feed direction opposite to that of the first tool) for machining the uncut shape RMP is created (see Fig. 1(b)), and the two tool paths PL1 and PL2 are combined. Step 104) and steps 103 onwards are repeated to create NC data for rough machining the part shape.

On the other hand, in the judgment at step 103, the uncut shape RM
If P does not exist, NC data for the first machining process is created at the same time, and a word (for example, "M2O") indicating the end of the NC data is added at the end (step 105), and the automatic programming process is ended.

<Effects of the Invention> According to the present invention, after specifying the shape and machining process of one part, a tool to be used in the machining process is selected from the tooling file, and the tool is used to process the part so as not to interfere with the workpiece. Create NC data, and if there is an uncut shape due to machining using the NC data, select another tool from the tooling file and create NC data for machining the uncut shape, and use the above two NC data. Because it is configured to synthesize and create NC data for part shape processing,
Operation time for creating NC data can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the present invention. FIG. 2 is a block diagram of a device equipped with an automatic programming function that implements the present invention, and FIG. 3 is a flowchart of automatic programming processing according to the present invention. FIG. 4 is an explanatory diagram of the tool shape. FIG. 5 is an explanatory diagram of the tool selection process of the present invention, and FIG. 6 is an explanatory diagram of the conventional example. 21...Nonvolatile memory, 22...Graphic display device, 23...Processor, 24...Operation panel, 25...ROM. 2G...RAM, W...Work, TL...Tool. PL...Tool aisle. RMP...Uncut shape patent applicant Agent for FANUC Co., Ltd.
Patent Attorney Chiki Saito Figure 1 (Q) Figure 1 (b) Figure 2 Figure 3 Figure 5 (a) Chiku 6 Figure

Claims (2)

[Claims] (1) In an automatic programming method that automatically selects the tool to be used from a tooling file and creates NC data, after specifying the part shape and machining process, selects the tool to be used for the machining process from the tooling file, Create NC data for machining using the tool so as not to interfere with the workpiece, and if there is an uncut shape due to machining based on the NC data, select another tool from the tooling file to process the uncut shape. Create NC data to
The above two NC data are combined to create an NC for part shape processing.
An automatic programming method characterized by creating data. (2) The first tool and hand (right hand,
The automatic programming method according to claim (1), characterized in that a tool with a different left hand (left hand) is selected and NC data for machining the uncut shape by sending the tool in the opposite direction to the first tool is created.