JPS6132111A - Tool offset value setting system in numerical controller - Google Patents

Abstract

PURPOSE:To observe visually a changing direction of a work by discriminating a correcting direction of a value depending on a tool offset value set newly and a changing value from the preceding value and discriminating the shape of tool from a number of the tool having the set tool offset value. CONSTITUTION:When a keyboard 1 corrects a tool offset value in increasing direction, the amount of change TV in the tool offset value transferred from an input control section 2 to a correction direction discriminating section 3 is positive, the correction direction discriminating section 3 discriminates the correcting direction VD of the tool offset as positive from the sign, a display control section 6 moves a tool 11 drawn in an initial pattern in figure (A) in a direction being parted from the center line 12 as shown in figure (B) and the correcting direction is shown in the arrow 13. In applying correction negatively, in case of an outer diameter tool, the change in the work is displayed as shown in figure (C) as if the work 10 were decreased as shown in crossing line region CLR2 and the arrow 13 representing the correcting direction is displayed. Thus, the change in the work due to reset of the tool offset value is recognized visually and set error is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method for setting a tool offset value in a numerical control device.

(Technical background of the invention and its problems) Conventionally, in a numerical control device (hereinafter referred to as NO device), a tool offset value is set in advance by an operator in order to smoothly perform machining work with a tool. . As a result of setting such a tool offset value, the operator confirms how the workpiece changes by measuring the dimensions after actually performing processing such as cutting. Therefore, such a conventional one-immersion method has the disadvantage that setting work takes time and the processed workpiece is wasted.

(Object of the invention) This invention was made under the above circumstances,
SUMMARY OF THE INVENTION An object of the present invention is to provide a tool offset value setting method that provides an operator with a means for confirming changes in a workpiece due to setting of a tool offset value.

(Summary of the Invention) The present invention relates to a tool offset value setting method in an NC device, in which the correction direction of the tool offset value is determined from the amount of change between the tool offset value newly set by the operator and the previous tool offset value. a direction determining means; a tool shape determining means for selecting a tool shape from the number of a tool having a set tool offset value and determining whether it is an inner diameter or an outer diameter; The present invention is provided with a display means for determining and displaying a change in the workpiece due to the setting of the tool offset value, and graphically displays the change in the workpiece due to the setting of the tool offset value.

(Embodiment of the invention) As shown in FIG. 1, this invention system includes an input control unit 2 that reads input data from a keyboard 1 and outputs a tool number TN and a tool offset change amount TV, and a change in tool offset. A correction direction determining unit 3 determines the correction direction VD of the tool offset value based on the amount TV, and a tool reads the tool shape TF set based on the tool number TN from the tool information memory 5 and determines whether it is an inner diameter or an outer diameter. This is realized by a shape determination section 4 and a display control section 6 that causes a display device 7 such as a CRT to display the change direction of the workpiece based on the tool offset value correction direction VD and the tool shape TF.

Next, we will explain the operation using an example.In the case of an outside diameter tool, when the tool is worn due to cutting, the tool offset value once set on the keyboard 1 needs to be corrected in a negative direction by the amount of wear. . Furthermore, if the dimensions of the workpiece are too small as a result of measuring the dimensions after cutting, it is necessary to correct the error in the positive direction. On the other hand, in the case of an internal diameter tool, the correction directions are respectively opposite to those described above. Now, considering the case where the tool offset value for tool number I11 is to be set, the tool shape determination unit 4 reads the tool shape TF from the tool information memory 5 based on the tool number entry 1 entered from the keyboard l, and determines whether the inner diameter or outer diameter is set. The diameter is determined and transferred to the display control section 6. The display control unit 6 displays the workpiece 10 in FIG. 2(A) in the case of an outside diameter tool. The tool 11 and the centerline 12 are connected to the workpiece 20 in FIG. 3(A) in the case of an internal tool. The tool 21 and the center line 22 are each graphically displayed and used as the initial screen in each case.

Here, when the operator corrects the tool offset value in the positive direction using the keyboard 1, the sign of the change amount TV of the tool offset value transferred from the input control unit 2 to the correction direction determination unit 3 becomes positive, and the correction direction determination unit 3, it is determined from the sign that the correction direction VD of the tool offset value is positive, and the display control unit 6 displays the above-mentioned figure 2 (A) or 3 (A).
The tool 11.21 drawn on the initial screen is shown in Figure 2 (B).
Or, as shown in FIG. 3(B), it is moved in a direction away from the center line 12.22, and an arrow 13.23 indicates the correction direction.

At that time, in Fig. 2 showing an example of the outside diameter tool, 1 Yu temple 1 廿 1 りんかん-; Ho city i〒-11 mine, t^1 de 4 藝 2 neck IrfW r! 71/mouth) Knob; As shown in the second figure, the workpiece 10 becomes larger by the shaded area CLRI.
In FIG. 3, which displays changes in the workpiece and shows an example of the internal diameter tool, as shown in FIG. Displays changes in the workpiece as if the wall thickness has become smaller. In addition, when the tool offset value is corrected in the negative direction using the keyboard l, the above is reversed, and in the case of an outside diameter tool, as shown in Fig. 2 (C), the workpiece 10 becomes smaller by the amount indicated by the intersection line area CLR2. In the case of an internal tool, as shown in Figure 3 (C), the change in the workpiece is displayed as if the thickness of the workpiece has increased as shown by the shaded area CLR4. Display graphics.

In this case as well, arrows 13 and 23 indicating the correction direction are displayed.

(Effects of the Invention) As described above, according to the setting method of the present invention, changes in the workpiece due to resetting of the tool offset value can be visually recognized, so that setting errors can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a block configuration diagram showing an example of a device that implements the method of this invention, Figs. 2 (A) to (C) are diagrams showing screen display examples for external tools, and Figs. 3 (A) to 3. (C) is a diagram showing an example of a screen display in the case of an internal diameter tool. DESCRIPTION OF SYMBOLS 1... Keyboard, 2... Input control section, 3... Correction direction discrimination section, 4... Tool shape discrimination section, 5... Tool information memory, 6... Display control section, 7. ...Display device. Applicant's agent: Yu Yasugata (3rd 2nd CB)

Claims (1)

[Claims] In the setting method of the tool offset value of the numerical control device,
Correction direction determining means for determining the correction direction of the tool offset value from the amount of change between the tool offset value newly set by the operator and the previous tool offset value, and the tool shape from the number of the tool having the set tool offset value. and a display means for determining and displaying the change direction of the workpiece from the correction direction and the tool shape, and for determining whether the tool is an inner diameter or an outer diameter. A tool offset value setting method in a numerical control device characterized by graphically displaying changes in an object.