JPS62231311A - Interactive automatic programming device - Google Patents

Abstract

PURPOSE:To execute an automatic programming interactively and efficiently by determining a working classification from workpiece information inputted interactively, retrieving a corresponding tool from a tool magazine and displaying it at a display. CONSTITUTION:A machine tool main body 10 to be able to execute a drilling, and a numerical control device 30 including working a tool file memory part, a diameter input device, a tool selecting device and a working program preparing device are provided. First, a work piece material is interactively to a central processing unit MPU 391, the working classification is selected, and the necessary conditions of the drilling the surface working and the side surface working are set. In case of the drilling, respective types of the working hole are inputted based upon the manufacturing drawing. Thereafter, the MPU 391, when the equivalent tool is decided to be at a tool magazine 17, displays a tool control number, a tool name, etc., on display 33, and when the tool is not at the magazine, the tool of the range set by a tolerance parameter beforehand is retrieved by the magazine 17. Thereafter, the MPU 391 executes automatically the programming interactively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an interactive automatic programming device that creates programs for numerically controlled machine tools in an interactive manner.

Prior Art 1 A conventional interactive automatic programming device installed separately or in conjunction with a numerically controlled machine tool has a tool file storage section that stores at least the management number 8 of the tools stored in the tool magazine of the machine tool, and A control number input means for inputting a control number of a tool used for material processing, and a tool selection device for searching a processing tool corresponding to the control number from the tool file storage unit when the control number of the tool is input from the control number input means. and a machining program creation means for creating numerical data related to the machining to be instructed to the numerical control m'fj device in accordance with the machining tool information from the tool selection means.

[Problems to be Solved by the Invention] In this interactive automatic programming device, the tool used to process a workpiece is input using the tool management number. Therefore, the hole diameter is read from the manufacturing drawing, the information number of the tool corresponding to this hole diameter is searched and compared from a pre-made list, and the searched and compared control number is inputted from the control number input means, that is, the keyboard. There is. In other words, inputting one type of hole diameter requires three steps: reading from the manufacturing drawing, searching and comparing, and inputting. Among these, this search comparison operation is extremely troublesome and requires a considerable amount of man-hours to input the management number from the keyboard. In other words, the productivity of machining using the conventional interactive automatic programming device may not be good.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an interactive automatic programming device that allows easy input of machining conditions for a workpiece.

[Means for Solving the Problems] The interactive automatic programming device of the present invention is an interactive automatic programming device that creates a machining program to be commanded to a numerical control device from machining information of a workpiece that is input in an interactive manner. a tool file storage unit that stores at least the type of tool stored in the tool magazine of the machine tool and the management number of the tool; and a machining diameter input means that inputs the machining diameter of a hole to be machined in the workpiece. When a machining diameter for hole machining is input from the machining diameter input means, a tool selection means searches for a machining tool corresponding to the machining diameter from the tool file storage unit, and information on the machining tool from the tool selection means is provided. Accordingly, the present invention is characterized by comprising machining program creation means for creating numerical data related to machining to be instructed to the numerical control device.

That is, the interactive automatic programming device of the present invention is comprised of a tool file storage section, a machining diameter input means, a tool selection means, and a machining program creation means.

The tool file storage unit is a device that stores at least the type of tool and the management number of the tool stored in the tool magazine of the machine tool. This tool file storage section is as follows:
For example, conventional random access memory, magnetic disks, etc. can be used.

The machining diameter input means is means for inputting the machining diameter of a hole to be machined on a workpiece. As a means of inputting this machining diameter,
For example, a conventional keyboard or voice recognition device can be used.

The tool selection means is a device that searches the tool file storage section for a machining tool corresponding to the machining diameter when the machining diameter for hole machining is input from the machining diameter input means. In order to improve the functionality of this interactive automatic programming device, when the tool selection means determines that there is no machining tool with the same machining diameter inputted from the machining diameter input means in the tool file storage section, It is desirable to have at least one of the functions of selecting a machining tool within a predetermined tolerance with respect to the machining diameter, and a function of displaying that the corresponding machining tool is sharp.

The machining program creation means is a device that creates numerical data related to machining to be commanded to the numerical control device in accordance with information on the machining tool from the tool selection means.

[Operation] The interactive/shape automatic programming device of the present invention is comprised of a tool file storage section, a machining diameter input means, a tool selection means, and a machining program creation means.

Let us consider a case in which machining information for a workpiece is input in an interactive manner using this interactive automatic programming device to create a machining program to be commanded to a numerical control device.

The tool file storage unit stores at least the type of tool and the tool number stored in the tool magazine of the machine tool. The operator inputs the machining diameter of the hole to be machined on the workpiece using the machining diameter input means. Then, when a machining diameter for hole machining is input from the machining diameter input means, the tool selection means searches the tool file storage section for a machining tool corresponding to this machining diameter. The machining program creation means is
In accordance with the machining tool information from the tool selection means, numerical data related to the machining to be instructed to the numerical control device is created. Therefore, when drilling a hole specified on a drawing as in the past, there is no need to compare the nominal diameter of the processing tool and the tool management number, thereby improving the productivity of workpiece processing.

(Embodiments) Hereinafter, the interactive automatic programming device of the present invention will be explained based on specific embodiments.

In this embodiment, the interactive automatic programming device of the present invention is applied to a conventional interactive automatic programming device installed in a numerical control device that is installed in a machining type numerically controlled machine tool and controls the machine tool body. It is.

As shown in the block diagram of FIG. 1, this numerically controlled machine tool includes a machine tool main body 10 capable of drilling, inputting machining data in an interactive manner, a tool file storage section, a machining diameter input means, a tool It is comprised of a numerical control device 30 having selection means and machining program creation means.

The machine tool main body 10 is of a machining center type, and includes a base 11, a spindle head 13 that is slidably held in the vertical direction of the base 11, and a spindle 15 that is mounted on the spindle head 13. A tool magazine 17 that is held on the base 11 and stores machining tools; a tool changer 19 that selectively attaches or detaches machining tools from the tool magazine 17 to or from the spindle using a circuit indexing device; and a base. A workpiece table 21 that is slidably held in the front and back direction by a servo motor 23 that drives the spindle head 13 in the vertical direction, and a servo motor 23 that drives the spindle head 13 in the vertical direction. Axially driven servo motor 25.2
It is mainly composed of 7.

The numerical control device 30 sends command pulses to a keyboard 31 that also serves as a machining diameter input means, a CRT display 33 that inputs machining data in an interactive format and displays alarms, etc., and servo motor drive circuits 351, 353, and 355. It mainly consists of a pulse generation circuit 35, a sequence circuit 37, and a central processing unit 39 connected to each of these devices via a circuit interface.

This central processing unit 39 includes a microprocessor 391 (hereinafter referred to as MPU 391
A read-only memory 393 that stores fixed cycle programs (deep hole Akira is a machining cycle program), a random access memory 395 that stores tool files and is battery-backed and non-volatile, and a random access memory for buffers. It is composed of a memory 397.

The operation of this embodiment will be described below using various flowcharts showing programs executed by the MPU 391.

First, the programming process performed by the MPU 391 will be explained in accordance with the flowchart of the automatic program shown in FIG. 2 and the flowchart of the machining program for machining a workpiece shown in FIG.

This automatic program is a program for inputting various processing data. The MPU 391 executes this automatic program from step 100 when the automatic program mode of the input mode is selected in the numerical control device l#30. That is, in steps 100, 102, and 104, one program each of the material shape definition, workpiece mounting position definition, and machining definition is executed. Among these, step 10
The subprograms for defining the material shape and defining the mounting position of the workpiece, respectively executed in the 0.102, are almost the same as those executed in conventional interactive numerically controlled machine tools.

Therefore, the explanation thereof will be omitted. Furthermore, the machining definition subprogram executed in step 104 is the same as the conventional one, and will be briefly explained below.

The processing definition subprogram starts execution at step 120 when called from the automatic program, as shown in the main flowchart of FIG.

That is, in step 120, the material of the workpiece is inputted in an interactive format, the type of machining is selected, and steps 122, 140, 142, 144, 146, .
In step 148, necessary machining conditions are set according to hole machining, plane machining, side machining, pocket machining, automation functions, and NC language.

Hereinafter, only the work associated with drilling will be explained as an example, and other work will be omitted.

When drilling is selected, the process moves to step 124 in which data regarding the drilled hole is input. In this step, the operator inputs various conditions for the hole to be machined based on the production drawing.

This situation is shown in FIG. 4, which is a display on a CRT display.

Here, first, the work surface on the Z axis is 7
Define coordinate B. Normally, these seven coordinates B are defined as an absolute coordinate system. Next, the effective depth W of the machined hole drilled in this work surface is defined using this Z-axis coordinate system. Then, it is defined whether or not to take it to the processing section. If chamfering is to be performed, the outer diameter C is input, but if chamfering is not to be performed, only the line feed key is pressed. After completing this first hole machining, the main shaft is returned upward in order to move according to the X and Y coordinates in order to perform the next hole machining.
Define the point return coordinate ■. Finally, define the hole diameter of the machined hole, that is, the nominal diameter E.

In this way, the drilling process is defined interactively on the CRT display.

Now, returning to FIG. 3, when all the definitions of the drilling process are completed, the MPU 391 moves to the next step 126. Here, the machining tool to be selected from the tool magazine is determined based on each data input in step 122.

This situation will be explained with reference to the flowchart of FIG. 5 showing the tool selection program executed by the MPU 391.

When the MPU 391 calls the tool selection program, execution starts from step 180. At step 180, the type of tool is determined. Thereafter, the process moves to step 182, where a predetermined tool is searched based on the nominal diameter. This search
On the random access memory 397, tool files are stored, for example, in the form of a table.

This tool file will be explained below.

The tool file contains the serial number to be recalled when registering or correcting each tool data in memory, the tool holder or magazine number, the name and nominal diameter of the tool stored in this magazine, the material of the workpiece, and when changing the tool. Various information such as the required T code, diameter correction D code and length correction code for setting the offset distance, small diameter/pitch, number of tool teeth, angle/sizing, blade length, cutting edge position correction coefficient, etc. It consists of data.

-1c+- Then, in step 184, it is determined whether the corresponding tool is in the magazine. When it is determined that the corresponding tool is in the magazine, the process jumps to step 192 and the contents of the tool, that is, the tool management number and tool name, are displayed on the CRT display 33. However, when it is determined that the tool with the nominal diameter specified on the keyboard 31 is not in the tool magazine 17, step 186 is executed, and a tool within the range set in advance by the tolerance parameter is stored in the tool magazine 17.
Search from 7. This tolerance is set depending on the workpiece to be machined.

This result is determined in step 190, and if the applicable tool exists, the above-mentioned step 192 is executed, but if it is determined that the applicable tool does not exist, the process jumps to step 196, and it is determined that the applicable tool is not in the tool magazine 17. Display in .

In this way, the processing tool is searched for in step 126,
When the results are displayed on the CRT display, the MP
U391 executes the subprogram of automatic determination of cutting conditions in step 128. This one subprogram is the same as the conventional one, so its explanation will be omitted, but the one described below is determined here. That is, selection of cutting oil or air as shown in FIG. 4 M1 cutting depth 7 points 11A, one cutting ff
1J1 Slight relief IK, temporary relief amount USR point coordinates R, Z
Point coordinates Z1 dwell D1 spindle rotation speed 81 feed rate F are automatically determined.

After this, the MPU 391 executes step 130.

In this step 130, the X and Y coordinates of all the holes to be machined under the conditions of the drill with this nominal diameter are input, and when the input of all hole positions is completed, the process moves to step 132, where the input is made using this machining tool. is set and step 12
Jump to 0.

In this way, processed data is input in an interactive manner.

Next, the process of machining a workpiece by this example device will be explained using the MPU.
The explanation will be given in accordance with the flowchart of FIG. 6 showing the main complementary nib program executed by the H.391.

The MPU 391 starts execution from step 200 when the processing start button on the numerical control device is pressed.

In step 200, a workpiece machining program interactively programmed according to the workpiece is not read from the random access memory. Then, the process moves to step 202, and it is determined whether or not machining is to be continued, such as whether all machining has been completed or whether a machining stop button has been pressed. The program ends when it is determined that there is no need to continue machining, but when it is determined that it is necessary to continue, it executes step 204 and subsequent steps, then jumps to step 202, and executes a repeat routine of step 202 and the subsequent steps. do.

When the program moves to step 204, the MP
U391 determines the processing type of the workpiece.

If it is determined that the machining type is not drilling, the program determines whether or not it is flat machining in step 2/10. Thereafter, the processing type of the enclosure is determined until the corresponding processing type is determined, and the workpiece is processed using the corresponding processing program.

When it is determined in step 204 that drilling is to be performed, the process moves to step 206, and the processing table 21 and spindle head 13 are positioned at one point at the X and Y coordinates to be processed. And step 208
Then, the MPU 391 determines whether the hole to be machined is suitable for deep hole machining or whether shallow hole machining is acceptable. When it is determined that the former case is better, the next step 210 is executed, and when it is determined that the latter case is better, step 220 is executed. The fixed cycle programs executed in these steps 210 and 220 are the same as those of the conventional program, so their explanation will be omitted.

According to this embodiment, a numerically controlled machine tool is constructed of a machining center type machine tool main body 10 and a numerical control device @30, and this numerical control device 30 is connected to a keyboard 31 which also serves as a machining diameter input means etc. A CRT display 33 for inputting machining data and displaying alarms, etc., a pulse generation circuit 35 for supplying command pulses to the servo motor drive circuit, and a sequence circuit 37 are connected to each of these devices via an enclosure interface. central processing bag holder 3
9, and the central processing unit 39 is a microprocessor having the functions of a tool file storage section, a machining diameter input means, a tool selection means, and a machining program creation means based on the information input through the keyboard 31. 3
91, a read-only memory 393 that stores fixed cycle programs, etc., a random access memory 395 that stores tool files and is battery-backed and non-volatile;
By configuring the buffer random access memory 397, there is no need to compare the nominal diameter of the machining tool and the tool management number when machining a hole specified on the screen as in the past, making it easier to process the workpiece. productivity will improve.

[Effects of the Invention] According to the present invention, a numerically controlled machine tool is provided with an interactive automatic programming device that includes a tool file storage section that stores at least the type of tool stored in a tool holder of the machine tool and the management number of the tool. , a machining diameter input means for inputting the machining diameter of a hole to be machined on a workpiece, and when a machining diameter of a hole machining is input from the machining diameter input means, a machining tool corresponding to the machining diameter is stored in the tool file storage section. A tool selection means that searches from Just by inputting the machining diameter, numerical data related to machining to be commanded to the numerical control device is created, so instead of inputting one type of hole diameter as in the conventional parenthesis method, There is no need for the three steps of reading from the production drawing, search and comparison, and input.In particular, the laborious search and comparison work is not required, which improves the productivity of hole machining.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a numerically controlled machine tool according to a specific embodiment of the present invention. FIGS. 2 and 3 are a flowchart showing an automatic program executed by the MPU 391 used in the same embodiment, and a flowchart showing a subprogram of machining definition. FIG. 4 is a display screen when inputting information in an interactive format on the CRT display used in the same embodiment. FIG. 5 is a flowchart showing a program for machining J and tool selection, which is a feature of the present invention and is executed by the MPU 391 in the same embodiment. FIG. 6 is a flowchart showing a cutting program executed by the MPU 391 in the same embodiment. 10... Machine tool body 30... Numerical control device 3
1...Keyboard (machining diameter input means) 39...Central processing unit (tool file storage section, machining diameter input means, tool selection means, machining program creation means)

Claims (3)

[Claims] (1) An interactive automatic programming device that creates a machining program to be commanded to a numerical control device from the machining information of a workpiece input in an interactive format, and the type of tool stored in the tool magazine of the machine tool and the tool. a tool file storage unit that stores at least a management number of the tool; a machining diameter input means for inputting a machining diameter of a hole to be machined on a workpiece; a tool selection means that responds and searches for a machining tool corresponding to the machining diameter from the tool file storage unit; An interactive automatic programming device characterized by comprising a machining program creation means for creating numerical data. (2) When the tool selection means determines that there is no machining tool with the same machining diameter inputted from the machining diameter input means in the tool file storage section, the tool selection means selects a machining tool within a predetermined tolerance for the machining diameter. An interactive automatic programming device according to claim 1. (3) When the tool selection means determines that there is no machining tool with the same machining diameter inputted from the machining diameter input means in the tool file storage section, the tool selection means displays that there is no corresponding machining tool. The interactive automatic programming device according to item 1.