JPH01228755A - Plural groove machining method - Google Patents

Abstract

PURPOSE:To shorten the tool selecting time to machine grooves with high accuracy by automatically determining tools and the sequence of machining the grooves so as to obtain an optimal machining efficiency when plural groove- shapes are machined by use of plural tools. CONSTITUTION:A graphical display unit 13 and a keyboard 14 are prepared for an automatic programming unit 11 by controlling the keyboard 14. And inputting mechanical origin is also processed by its programming function. When part shapes are inputted, the shapes of part PRT having plural groove shapes Mi(i=1, 2...) inputted into RAM 11 and stored. A processor 11a prepares a correspondence table TB by use of a tooling file TF registered by inputting 'automatic decision', and the groove-shapes Mi. Then, the processor 11a evaluates the groove shapes Mi from the correspondence table TB, judges whether two or more machinable tools exist or not in groove-tool card columns, and the results are stored in RAM 11b. Next, the groove are machined by using tools in sequence, starting from a tool with smaller width.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a multi-groove machining method, and more particularly to a multi-groove machining method in which a plurality of groove shapes are turned using a plurality of tools.

<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 the 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. 5, 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 the 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 to input machine origin and turret position.

(9) Ninth step of selecting a processing process.

(10) 10th step of tool selection and tool data input; (11) 11th step of determining machining conditions.

(12) 12th step to input the cutting direction, (13) 13th step to input the cutting range, (14) 14th step to input the presence or absence of an area to be cut with the same tool, (15) Calculation of tool path (NC data) 15th of 'Creation)'
According to the steps, predetermined question screens (dialogue screens) are displayed one after another on the display screen, the operator is asked to input the necessary data from the keyboard according to the questions, and finally all inputted data is used to confirm the NG. A program (NG data) is created.

Therefore, a plurality of groove shapes having various groove widths are input in the component shape input step (seventh step) of the NC program creation device, and each groove shape is input in the machining process input step (ninth to fourteenth steps). Specify the tool to be used for.

When the data for groove machining is input, an NG program for groove machining is automatically created in the 15th step of calculating the tool path.

<Problem to be solved by the invention> By the way, when machining multiple groove shapes, the conventional method requires the operator to consider the groove width for each groove shape when selecting a tool and inputting tool data (10th step). Therefore, a tool that can manually machine the groove shape was selected. Furthermore, the processing order of the plurality of groove shapes was also determined by the operator's judgment. For this reason, in the conventional method, (1) a lot of time is required for tool selection work; (2) It is not possible to select tools and determine the order of groove machining to optimize machining efficiency; (3) there are cases where groove machining starts from a wide groove shape, and in this case, machining accuracy deteriorates, etc. there were.

In light of the above, an object of the present invention is to provide a multi-groove machining method that can automatically select a tool with high machining efficiency in machining a plurality of grooves, and can also process the grooves in an optimal order from the viewpoint of machining accuracy.

Means for Solving the Problems> FIG. 1 is a block diagram of an NC device equipped with an automatic programming function that implements the present invention.

11 is an automatic programming section, 12 is an NC control section, 13
1 is a graphic display device (CRT), and 14 is a keyboard. Also, llb is automatic programming section 1
1 RAM, TF is a tooling file, TB is a correspondence table between groove shapes and tools that can cut grooves, and P R'I' is a plurality of groove shapes Mi (i=1. 2...).

<Operation> A plurality of groove shapes Mi (i=1°2...
) and a plurality of groove tool data registered in advance in the tooling file TF, a correspondence table TB between the groove shape Mi and the tool Tj (j=1.2...) that can process the groove shape Mi is determined. , using the correspondence table TB, one groove shape Mi
If the groove shape can be machined with a plurality of tools Tj, the tool with the largest tool width is used to machine the groove shape, and the tool to be used is determined, and the grooves are machined in order using the tools with the smallest tool width.

<Embodiment> FIG. 1 is a block diagram of an NC device equipped with an automatic programming function to realize the present invention. Reference numeral 811 indicates an automatic programming section, 12 indicates an NC control section, 13 indicates a graphic display device (CRT'), and 14 indicates is the keyboard, 15.
16 is a switching unit. In addition, switching unit 15.1
6 is shown as a switch for convenience of explanation, but it can actually be switched by software processing.

The automatic programming section 11 and the NG control section 12 have a microcomputer configuration, and include a processor, a control program memory (ROM), and a RAM. However, 11a is a processor of the automatic programming section 11,
llb is a RAM of the automatic programming section 11, and 12a is a RAM of the NG control section 12. A touring file TF is registered in advance in the RAM 11b. This tooling file TF has tool numbers, tool shape data, etc. associated with each other as shown in FIG.

In addition, the tool shape data is shown in Figure 3 (a) in the case of a grooving tool.
), input each dimension of the shape of the grooving tool for each item (registration number, cutting edge radius, cutting edge width, etc.) according to the question M (Fig. 3 (a)) on the tool shape data input screen. The created tool shape data is registered as a tooling file.

The operator operates the keys on the keyboard 14 to activate the switching unit 15 , 16 so that the graphic display device 13 and the keyboard 14 are used for the automatic programming section 11 . Thereafter, the programming function of the automatic programming section 11 performs the processing up to the eighth step interactively, similar to the flow of the conventional method shown in FIG. In the input of one part shape (seventh step), a part PRT having a plurality of groove shapes Mi (i=1.2...) shown in FIG.
The shape of is input and stored in RAM Ib.

Then, in the eighth step, when the soft key "Next Page" is pressed, a machining process input screen is displayed and it becomes possible to input a machining process (ninth step).

When the "groove cutting" process is selected in the machining process input, a tool selection screen is displayed and tool selection becomes possible (step 10 in FIG. 5). If the tool to be used for groove machining and the machining order are to be automatically determined, the operator inputs "automatic determination" from the soft key.

FIG. 4 is a flowchart of the processing for determining the tools to be used and the order of groove machining according to the present invention.

Processor lla inputs the tooling file TF (Fig. 2) and groove shape M registered by inputting "automatic determination".
A correspondence table TB is created using i.

That is, as shown in FIG. 1, the groove shapes are arranged in the horizontal column, and the groove shapes Mi (i=1, 2, etc.) are arranged in descending order of groove width.
Take a groove cutting tool (grooving tool) in the vertical column.

Arrange the groove tools Tj (j=1.2...) in descending order of tool width, and check whether each groove tool can be machined (1) or cannot be machined (0) for the entire groove shape. A correspondence table TB is created (step 101). In addition, in the correspondence table TB in Fig. 1, the groove shape M1 can be machined only with the groove tool 'r1, the groove shape T2゜T3 can be machined with the groove tool Tl, T2, and the groove shape M4゜M5 can be machined with the groove tool Tl, T2. ．． It can be processed with T3.

Next, processor lla sets 1→i in step 102.
), the groove shape Mi is obtained from the correspondence table TB, and it is determined whether there are two or more groove tools that can be processed in the groove tool column of the groove shape Mi (step 103).

If there are not two or more groove tools that can be machined, that is, there is only one groove tool that can be machined, this groove tool is stored in the RAM 11b as a groove tool for machining the i-th groove shape Mi.
(Step 104) - If there are two or more groove tools that can be machined, RAMI selects the groove tool with the largest tool width among the applicable groove tools as the groove tool for machining the i-th groove shape Mi.
lb (step 105).

Next, it is determined whether the groove tools have been determined for all the groove shapes (step 106), and if the groove tools have not been determined,
+ i −+ i (step 107), and the processing from step 103 onwards is repeated. On the other hand, if all have been determined, the groove machining order (the order of tools to be used) is determined, assuming that the grooves are to be machined using tools in descending order of tool width (step 108), and the process ends.

Thereafter, the data necessary for creating the specified NC data is input sequentially in separate process steps, and the first step of NC data creation is performed.
In step 5 (Figure 5).

The processor lla creates an NG program that starts groove machining in order from the groove tool with the smallest tool width based on the groove shape and the tool shape data for machining the groove shape.

<Effects of the Invention> According to the present invention, the correspondence between groove shapes and tools capable of machining the groove shapes is based on a plurality of groove shapes having various groove widths and a plurality of groove tool data registered in advance. Seeking a relationship;
Using this correspondence relationship, if one groove shape can be machined with multiple tools, the groove shape is configured to be machined with the tool with the largest tool width, and the tools are used in order from the smallest tool width. Since it is configured to perform groove machining, the tool and the groove machining order can be automatically determined to optimize machining efficiency, and moreover, the groove machining can be performed with high machining accuracy.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an NG device equipped with an automatic programming function that realizes the present invention, Fig. 2 is an example of a tooling file dialog screen, and Fig. 3 is an explanatory diagram of groove machining tool shape data. FIG. 4 is a flowchart of the multiple groove machining process of the present invention. FIG. 5 is an explanatory diagram of a conventional example. 11... Automatic programming section. 12...NG control unit, 13...Graphic display device. 14... Keyboard TB... Compatibility table. TF...Touring file. Mi...Groove shape patent applicant FANUC Co., Ltd. agent
Patent Attorney Chiki Saito Figure 2 Figure 3 (b) Shi---jN''----m Figure 4

Claims (2)

[Claims] (1) In a multi-groove machining method in which multiple groove shapes are turned using multiple tools, the groove shape and the corresponding groove shape are created based on multiple groove shapes having various groove widths and multiple groove tool data registered in advance. Find the correspondence with tools that can process the groove shape, and use the correspondence to machine the groove shape with the tool with the largest tool width if one groove shape can be machined with multiple tools. A multi-groove machining method characterized by: (2) The multi-groove machining method according to claim (1), characterized in that grooving is started in order from the tool with the smallest tool width.