JPH0478903A - Numerical control information generating device - Google Patents

Abstract

PURPOSE:To remarkably curtail the correction time and the labor for a parameter and to improve the working efficiency by preparing plural parameters of every working part for determining a working method, and deciding automatically the parameter being optimal to an object to be worked therefrom. CONSTITUTION:The device is provided with store means 19-1 - 19-N for storing plural parameters of every working part for determining a working method, and a deciding means 20 for deciding the working part to which its graphic element belongs, based on a shape feature, so that the parameter corresponding to a result of decision is read out of plural parameters. That is, plural parameters in which a parameter item for determining the working method is a component are prepared at every working part, a before-working shape and an after-working shape which are inputted are divided at every working part, and thereafter, by reading out the parameter concerned at every working part thereof, the working method is determined. In such a way, with respect to each graphic element, an optimal working method can be determined.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a numerical control information creation device that creates numerical control information from a shape before machining and a shape after machining.

(Prior art) Today, so-called numerical control machine tools, which automatically control machine weaving using numerical control information composed of numbers and codes, have become widespread, and have greatly contributed to automation of machining, reduction of machining costs, and shortening of machining time. Contributing.

In this numerically controlled machine tool, is it necessary to input information for numerical control in advance before machining?Recently, with the aim of simplifying the process, data is input in an interactive format and is numerically controlled? &l] Numerical control information creation devices that create information are widely used.

When using such a numerical control information creation device, processing can be performed by inputting the material quality, the shape before processing, and the processing method (processing area, cutting direction, cutting tool, cutting conditions, processing order, etc.). It is possible to create numerical control information. Recently, a numerical control information creation device has also appeared which automatically determines a machining method and creates numerical control information by inputting a single input of a shape before machining and a shape after machining.

FIG. 4 is a block diagram showing an example of a conventional numerical control information creation device, in which the pre-machining shape SA and the post-machining shape SB, which are input by the operator or the operation panel 1 such as a keyboard, are inputted via the data 1 input section 2. and are stored in the pre-processing shape storage section 3 and the post-processing shape storage section 4, respectively. The pre-processing shape SA stored in the pre-processing shape storage section 3 and the post-processing shape SB stored in the post-processing shape storage section 4 are extracted by the feature extraction section 5.
The shape time (y
sc is extracted and stored in the feature-time storage section 6.

On the other hand, the machining method determination parameter SE used for specifying the machining method is stored in the parameter storage section 19 in advance, and is persuaded to the parameter time storage section 18 and recorded.
1 will be given.

Particularly 1. The shape feature SC stored in the tide-time storage unit 6 and the machining method determination parameters SE recorded f and ρ in the parameter-time storage unit 18 are read into the feature determination unit 7 and compared, and the result is is sent to the machining method determining unit 8 as feature comparison data SF, and it is determined whether the machining method is SG. This machining method SJ is read into the process-specific data creation section 9 and analyzed to create process-specific machining data SH such as cutting shape, cutting tool, cutting conditions, cutting order, etc. for each process.

Process-specific processing data 5 created by the process-specific data creation unit 9
+1, the pre-processing shape SA stored in the pre-processing shape storage section 3, and the post-processing shape SB stored in the post-processing shape storage section 4 are read into the display control section 10 and displayed as display data S.
I and is displayed on the display device 12 via the display data output section 11.

Further, the process-specific processing data 511 created by the process-specific data creation unit 9 is read into the numerical control/h report creation unit 13 and
No. 1 is encoded into the magnetic tape 15.1 through the numerical control information output section 14 as numerical control information SJ. It is designed to be output to a floppy disk 161 communication number] 7, etc.

FIG. 5 is a flowchart showing an example of the operation of the main parts of the conventional numerical control + f4fK creation device described above.
A and the processed shape 5B are stored in the pre-processed shape storage section 3 and the post-processed shape storage section 4, respectively (step 5101).
. Next, the feature extraction unit 5 divides the pre-processing shape SA stored in the pre-processing shape storage unit 3 and the post-processing shape SB stored in the post-processing shape storage unit 4 into processing parts such as inner diameter and outer diameter. Then, the shape time 1ysc, which is a factor for determining the machining method, is extracted from the shape data of the graphic elements necessary for machining among the graphic element sequence forming the post-machining shape SB, and is stored in the feature-time storage unit 6 (step 5102). On the other hand, the machining method determining parameter SE is read out from the parameter storage unit 18 or the parameter storage unit 19 and stored (step 5103).

Then, when the shape comparison data SF is created by comparing the shape time l55tsc stored in the feature determination unit 7 or the feature time storage unit 6 and the machining method determination parameter SE stored in the parameter time storage unit]8. Then, the machining method determination unit 8 determines a machining method based on this feature comparison data SF (step 5104), and all processing ends.

For example, when the pre-processing shape and post-processing shape shown in FIG.
As the shape #5m5c which is a factor in determining the machining method, the angle A1 of the graphical element e with the X-axis, the length of the graphical element e in the X-axis direction, and the size D of the machining allowance are extracted. The feature determining unit 7 uses the three numerical values 8, L, and D extracted by the feature extracting unit 5 as the shape feature SC as the parameter time t! ! !
The three numerical values (X @ which angle limit value P8, the limit value PL of the length in the X-axis direction, and the limit value PD of the size of the cutting allowance) stored as the machining method determination parameter SE in section) (See Figure 7). Processing method determining section 8
is the result of the comparison or the following equations (1), (2), (3
), the machining method for the graphic element e is determined to be end face machining, and if even one condition is not satisfied, the machining method for the graphic element e is determined to be longitudinal machining.

A≦PA ・・・・・・(1) L>PL
・・・・・・(2) D≦PD
......(3) (Problem to be solved by the invention) In the conventional numerical control information creation device described above, there is no distinction between parameters depending on the difference in the machining part, and the length of the graphic element,
If the conditions such as angle and cutting allowance are equal, it is determined whether the machining method is the same. For example, end face processing is determined for the graphic element e62 and the graphic element e55 shown in FIG. 8 based on the same parameters. Since the graphic element @ e 62 is located on the inner diameter and the graphic element ec6 is located on the outer diameter, the tool for machining the graphic element e62 (for example, in Fig. 9 (a)
)) is a tool for machining graphic element e66 (for example, Fig. 9 (
b)) The holder portion is usually longer than that in). On the other hand, if a large t2 load is applied in the vertical direction to a tool with a long Holter part, there may be problems such as tingling of the tool, so when machining the inner diameter part such as graphic element e52, it is better to perform longitudinal machining. Or preferable. In this way, the length of the geometric element,
Even if the conditions such as angle and cutting allowance are the same, if the location of the graphic element is different, it may be better to change the machining method, and conventional numerical control information creation equipment does not necessarily determine which machining method is suitable. There was no guarantee that it would be done. Therefore, in order to obtain the optimal machining method for each graphic element using an operator or a conventional numerical control information creation device, the process data and numerical control information created based on the determined machining method must be modified, There was a problem in that many parameter items had to be input each time a processing method was determined.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a numerical control information creation device that can determine a machining method that is inappropriate for the shape of a workpiece.

(Means for Solving the Problems) The present invention extracts shape features of graphic elements that are factors for determining a machining method from inputted pre-machining shapes and post-machining shapes, and based on these shape features, the machining method The present invention relates to a numerical control information creation device for determining numerical control information and creating numerical control information. This is achieved by comprising a determining means for determining the machining region to which the graphical element belongs based on the characteristics, and reading a parameter corresponding to the determination result from among the plurality of parameters.

(Function) The present invention prepares a plurality of parameters for each part to be machined, each consisting of parameter items for determining the machining method.
1 After dividing the input pre-machining shape and post-machining shape into each machining area, the relevant parameters for each machining area are read out to determine the machining method, so the optimal machining method is determined by arranging them for each graphical element. I can do something.

(Embodiment) FIG. 1 is a block diagram showing an example of the numerical control information creation device of the present invention in correspondence with FIG. 4, and the same components are designated by the same reference numerals and the description thereof will be omitted.

The shape feature sc stored in the feature-time storage section 6 is sent to the machining part determining part 20 for each graphic element, and it is determined whether the shape feature SC belongs to the machining part to which the graphic element belongs. On the other hand, N (N is an integer of 2 or more) parameters are prepared for each machining part to determine the machining method.
The parameters are stored in the processing part parameter storage units 19-1 to 19-N, respectively. Then, the optimum parameters for machining the machining part determined by the machining part parameter determination unit 20 are sent to the corresponding machining part parameter storage units 19-1 to 19-N, and the parameters are The machining method determining parameters SE are sent to the parameter storage section 18 for each machining section.

FIG. 2 is a flowchart showing an example of the operation of the main parts of the numerical control information creation device of the present invention described above, in which the data 1 input section 2 is the pre-machining shape world and the post-machining shape world input from the t5 cutting board 1. The shape SB is stored in the pre-processing shape storage section 3 and the post-processing shape storage section 4, respectively (step Sl). Next, the feature extraction unit 5 divides the pre-processing shape SA stored in the pre-processing shape storage unit 3 and the post-processing shape SB stored in the post-processing shape storage unit 4 into processing parts such as inner diameter and outer diameter. Then, from the shape data of the graphic elements necessary for machining among the graphic element sequence forming the processed shape SB, the shape feature SC which is a factor for determining the machining method is extracted and stored in the feature-time storage unit 6 (step 52). The machining part parameter determining unit 20 successively retrieves the shape feature SC for each graphic element from the feature-time storage unit 6, and determines the machining part to which the graphic element belongs based on the shape feature SC (step S3). Examples of parameters stored in advance in the parameter storage units 19-1 to 19-N are parameters optimal for machining the machined part determined by the machined part parameter determination unit 20 from among the machined part parameters as shown in FIG. The parameters corresponding to the read command SH are stored as machining method determining parameters SE in the parameter time storage unit 18 for each machining region (steps 54-1 to S4-N). Then, the feature comparison data SF is obtained by comparing the shape feature SC stored in the feature determination unit 7 or the feature-time storage unit 6 and the machining method determination parameter SE stored in the parameter time storage unit 18 for each figure element. Once created, the machining method determination unit 8 determines the machining method based on this feature comparison data SF (step S5), and ends all processing.

(Effects of the Invention) As described above, according to the numerical control information creation device of the present invention,
By preparing multiple parameters for each part to be machined to determine the machining method, and automatically determining the optimal parameters for the workpiece from among them, the optimal machining method for the workpiece is automatically determined. 1- By doing so, it is possible to significantly reduce the time and labor required to correct parameters, and improve machining efficiency.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the numerical control information generating device of the present invention, FIG. 2 is a flowchart explaining an example of its operation, and FIG. 3 is a block diagram showing an example of the numerical control information generating device of the present invention. A diagram showing an example of parameters, FIG. 4 is a block diagram showing an example of a conventional numerical control information creation device,
FIG. 5 is a flowchart explaining an example of its operation, FIGS. 6 and 8 are diagrams showing an example of a shape before machining and a shape after machining, and FIG. 7 is a diagram for determining a machining method in a conventional numerical control information creation device. FIG. 9 is a diagram showing an example of a tool. DESCRIPTION OF SYMBOLS 1... Operation panel, 2... Data 1 input section, 3... Pre-processing shape storage section, 4... Post-processing shape storage section, 5...
Feature extracting section, 6... Feature-time storage section, 7... Feature determining section, 8... Processing method determining section, 9... Process-based data creation section, 10... Display control section, 11 . . . Display data output section, 12 . . . Display device, 13 . . . Numerical control information creation section, 14 . ...Communication signal, 18...Parameter time storage section, 19-1~
19-N... Machining part parameter storage section, 20...
Machining part determination section. Jin 3 diagram stem 7 diagram

Claims (1)

[Claims] 1 Numerical control that extracts shape features of graphic elements that are a factor in determining the machining method from the input pre-machining shape and post-machining shape, determines the machining method based on these shape features, and creates numerical control information. The information creation device includes a storage means for storing a plurality of parameters for each machining part for determining the machining method, and a determining means for determining a machining part to which the graphic element belongs based on the shape characteristics, A numerical control information generating device characterized in that a parameter corresponding to the determination result is read out of the parameters.