JPH02108105A - Numerical controller - Google Patents

Abstract

PURPOSE:To easily predict the wear of a tool by providing an operation part with a tool load value measurement key and calculating load predicted values by tool used in a working program speedily. CONSTITUTION:When a load value measurement key of an operation part 8 is pressed by an operator, an operation part control means 9 starts a tool load value measuring function. The program which is selected by the operator previously is read in by a program reader 2, working data are analyzed by an instruction interpreting processing means 3, and a precomputing means 4 generates precomputed working data. A tool load value measuring means 11 calculates and integrates a load predicted value alphai for each tool commanded with the precomputed working data and every time the load predicted value is integrated and updated, a display part control means 12 outputs display data to a display part 13. Consequently, the load predicted value that the tool has is easily measured.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a numerical control device having a function of measuring a standard load value for each tool commanded in a machining program [Prior Art] Third The figure shows a commonly used numerical control device (
This is a block diagram showing the configuration of (hereinafter referred to as NO device).
) is a program written in a language suitable for numerical control; 9. (21 is a device for reading the program (11). The read program is analyzed by the instruction decoding processing means (3) and the calculation processing means (4), and the processing result is the movement amount output (5). Through means, °
It is given to the drive control device (6) as interpolated data for operating the machine (71).

One of the preliminary preparations necessary for operating a machining process using an NC machine tool is the work of arranging tools to be used for machining. For production control, it is necessary to estimate as accurately as possible in advance the number of tools that will fit the process plan.

In FIG. 3, the data of the machining program (11) is sent to the command decoding processing means (3) by the program reading device.In the command decoding process, the data of the machining program is decomposed into data necessary for the numerical control device. It is sent to the next pre-calculation processing means 141.The pre-calculation processing means sends it to the movement amount output means (5) as the movement amount to be executed first.The movement amount output means converts the movement amount into 7 analog data and drives it. The control device (6) moves the feeder 2 machine (71t).

On the other hand, the data of the four grams of the nib is displayed on the display section α3 via the display control means (Lz).

[Problem to be solved by the invention]

In conventional machining processes using No. 1 machine tools, the tool estimation work described above was performed by referring to previous work experience, machining processes, and tool specifications; therefore, when performing new types of machining, complicated calculations are required. There were problems such as the time required to estimate accurate values.

This BA was made in order to solve the problems mentioned above. Prior to the operation of the process, a No. The purpose is to obtain.

[Means to solve the problem]

No related to this invention! In the u position, as a means of measuring the expected load value of the tool used in the machining program, the machining data tS calculated by the pre-calculation processing means in the numerical control section of the NG device is analyzed and calculations are automatically executed. An arbitrary output device, such as a display screen, is used to notify the operator of the calculation results.

[Effect]

The tool load value measurement function of the No device in this invention can quickly obtain values that serve as a guideline for the load that will be applied in one machining process from the cutting volume and feed values for each tool used in the machining program. Additionally, this makes it easier to estimate tools before starting a process.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the same parts as in FIG. 2 are indicated with the same reference numerals. In FIG. The program (11) read by the program reading device (2) is (
It is analyzed by the instruction decoding processing means (3) and the pre-calculation processing means (4). Q [m is determining the tool load function], the measurement function is enabled (ON) by the operation unit control means (9) that receives the input of the load value measurement key of the operation unit (8).
If so, the analyzed processing result is passed to the measurement function section of a1+, and the predicted tool load value calculated and integrated here is output to the display section of a3 via the display section control means of α2. Also, if the measurement function is not valid (3) (4)
Similar to the conventional operation, the results of the processing by means (5) are given to the drive control device (6) as interpolated data for operating the machine (7) via the movement amount output means (5).

Next, the operation will be explained with reference to the flowchart shown in FIG.

When a load value measurement key (not shown) of the operation section (8) is pressed by an operator (not shown), the tool load value measurement function is activated by the operation section control means (9).

The program (1) previously selected by the operator
1 is read by this program reading device (second
The processed data is analyzed by the instruction decoding processing means (3) (Fig. 2 (le)), and the pre-calculation processed data is created by the pre-calculation processing means (Fig. 12 α7).
+). The tool load value measuring means of an calculates the expected load value α1 for each commanded tool based on the pre-calculated machining data,
Add up (29th Nishiki).

however.

α1 min Nφ (Va/5) (N: normalization constant, vo: cutting volume, s: feed rotation speed,
11:Q, 1, 2...).

Each time the predicted load value is integrated and updated, it is output as display data to the display unit α3 by the display unit control means α2 (FIG. 2, 19).

The above operations are repeated until the end code of machining program (1) is read, and when the program ends, the tool load measurement function stops operating.

〔Effect of the invention〕

As described above, according to the present invention, a tool load value measurement key is provided in the No. device operation section, and the expected load value for each tool used in the machining program can be quickly calculated, so tool wear can be predicted. The effect is that it can be done easily.

[Brief explanation of the drawing]

FIG. WJ1 is a block diagram of an NC device showing an embodiment of the present invention, and FIG. 2 is a flowchart showing an embodiment of the present invention. FIG. 3 is a block diagram of a conventional NC device. In the figure, (2) is a program reading circuit, (3) is an instruction decoding processing circuit, (4) is a pre-calculation processing circuit, αυ is a tool load value measurement circuit, and (8) is a tool load value measurement key ( (not shown) is provided. α3 is on the display. α4 is the main body of the numerical control device. Note that the same reference numerals in Figure 9 indicate the same or equivalent parts.

Claims (1)

[Claims] In a numerical control device that reads a machining program and numerically controls a controlled object by controlling a drive control device based on the calculation results created by an instruction decoding processing means and a pre-calculation processing means, the output from the pre-calculation processing means Upon receiving the information, the measurement of the predicted tool load commanded in the machining program functions, and while the measurement function of the machining program is being executed, the output information is not transmitted to the drive control device, and the measurement function is disabled. At the time of execution, a tool load value measurement function means for transmitting a normal control signal to the drive control device is provided in the numerical control device main body, and the tool load value measurement key of the operation unit connected to the numerical control device main body is operated to A numerical control device characterized by being provided with means for measuring and displaying a predicted load value for each tool commanded in a machining program.