JP2000158290A - Nc machining program preparation method and device for machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a preparation method for an NC machining program by which an operator easily change the order of each part process of the NC machining program automatically prepared for a turning center, etc. SOLUTION: An NC machining program preparation method for a turning center, etc., is that a shape of a work to be turning operated, a finishing shape by turning operation, and a finishing shape by rotary tool machining are inputted to prepare more than one turning operation part process for forming the finishing shape by the turning operation, a rotary tool part process for forming the finishing shape by the rotary tool machining si prepared more than one, the lathe turning part process and the rotary tool part process are displayed, the order of the displayed turning operation part process and the rotary tool part process are changed to be connected according to the changed order of the turning operation part process and the rotary tool part process, and a connection program 651 connecting each part process to the connection part between the turning operation part process and the rotary tool part process is inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to processing a workpiece held by a chuck at the tip of a spindle by using a turning tool by rotating the workpiece, and performing processing by using a rotating tool which rotates itself. The present invention relates to a method and an apparatus for creating an NC machining program for a machine tool such as a turning center that can be performed.

[0002]

2. Description of the Related Art Turning of a workpiece held by a chuck at the tip of a spindle by a turning tool by rotating the workpiece, and turning by a rotating tool in which the tool itself rotates. Machine tools such as centers are known. FIG. 1 is a perspective view showing an example of a turning center.

[0003] On the upper surface of the bed 1, two Z-axis guide members 2 are provided in a Z-axis direction parallel to an axial direction of a spindle 19 described later. Here, the Z-axis guide member 2 is arranged in a horizontal plane parallel to the floor on which the machine tool is installed. The carriage 3 is mounted on the Z-axis guide member 2 so as to be movable in the Z-axis direction. The movement of the carriage 3 in the Z-axis direction is represented by Z
Driven by the shaft motor 26. Y on carriage 3
The shaft feeder 7 is provided so as to be movable in a Y-axis direction which is a direction orthogonal to the Z-axis line. Here, the Y-axis direction is also arranged in the horizontal plane.

[0004] On the Y-axis feed base 7, a tool rest main body 11
It is provided movably in the axial direction (vertical direction). A turret 16 in which a plurality of tools are arranged on the circumference is provided on the tool rest main body 11. The turret 16 performs indexing rotation and positions a necessary tool at a processing position. An automatic tool changer 30 is provided on the Y-axis feed base 7. Further, a tool magazine 40 for storing tools is mounted on the Y-axis feed stand 7.

[0005] On the vertical surface of the bed 1 parallel to the Z-axis direction,
A tailstock 17 is provided movably in the Z-axis direction. A headstock 18 is provided at a position facing the tailstock 17. A spindle 19 is rotatably supported in the headstock 18. A chuck (not shown) is provided at one end of the main shaft 19.
And a pulley 20 is fixed to the other end. On the other hand, the output shaft of the spindle drive motor 23 has a pulley 2
2 is fixed. A V-belt 21 is bridged between the pulley 20 and the pulley 22, and the pulley 20 is driven to rotate by a main shaft drive motor 23 via the V-belt 21.

[0006] The rotational angle position of the main shaft 19 is controlled by a C-axis control unit 24. The C-axis control unit 24
It is mounted and fixed on the headstock 18. The C-axis control unit 24 is provided with a C-axis control motor 25, and controls the angular position of the main shaft 19 via the gear transmission mechanism by the rotational driving force of the C-axis control motor 25.

According to such a turning center, the workpiece is gripped by the chuck at the tip of the spindle 19 and continuously rotated at a predetermined number of revolutions, and the turning tool of the turret 16 is moved in the X and Z directions with respect to the workpiece. Can be relatively moved to perform turning. In addition, while controlling the spindle 19 in the C-axis direction, the rotating tool provided on the turret 16 is rotated by a drive motor (not shown), and is relatively moved in the X, Y, and Z-axis directions with respect to the workpiece to perform milling. Processing (rotary tool processing) using a rotary tool such as processing, drilling, tapping, and the like can be performed. That is, a plurality of processing steps can be performed by one chucking of the workpiece.

[0008] In order to perform machining using such a turning center, it is necessary to create an NC machining program. Since it is difficult to create this NC machining program unless an operator understands both the NC machining program of the turning machining and the rotary tool machining, an automatic program creating device or an automatic program creating that automatically creates the NC machining program An NC (numerical control) device having a function is often used.

[0009] Such automatic program creation functions include:
There is an automatic program creation function for an NC lathe for performing a turning process, and an automatic program creation function for a machining center (hereinafter, referred to as MC) for machining with a rotary tool. The method of inputting the finished shape data and the like is different between the two automatic program creation functions. Regarding the NC machining program itself, the meaning of the NC command is different between the NC machining program for the NC lathe in which the workpiece rotates and the machining is performed and the NC machining program for the MC in which the tool rotates and performs the machining. .

[0010]

When an NC machining program is created by the automatic program creation function of the turning center as described above, first, a partial process of turning is output, and then a partial process of rotary tool machining such as milling is performed. Is output. However, there is a case where it is better to perform a step by rotary tool processing before some steps of the turning processing. An example in which the steps need to be interchanged will be described with reference to FIGS.

For example, when turning is performed on the outer peripheral surface of the workpiece W and drilling is performed on the outer peripheral surface with a drill, the automatic program creation function uses (a) rough outer diameter processing as shown in FIG. An NC machining program is created by arranging the steps in the order of b) outer diameter finishing and (c) drilling. As described above, the drilling, which is a rotary tooling, is the last step. Therefore, if the machining is directly performed according to the NC machining program, burrs B are finally formed on the outer peripheral surface of the workpiece W as shown in FIG. Will remain.

[0012] As shown in FIG. 11, when the steps are changed in the order of (a) roughing of outer diameter, (b) drilling, and (c) finishing of outer diameter, the final outer diameter finishing is performed. Burrs B are removed, and a desired final processing result is obtained. In such a case, the automatically created NC machining program is transferred to the automatic program creation device or N
Although the machining process was exchanged by editing on the C device side, the editing operation was not easy even for a skilled person, and there was a risk that the machine tool would perform an erroneous machining operation due to an editing error or omission. .

Therefore, the present invention provides an automatic program creation function for a machine tool such as a turning center, in which an operator can easily change the order of each machining step of an automatically created NC machining program as necessary. It is an object of the present invention to provide a method and an apparatus for creating an NC machining program for a machine tool capable of performing the following.

[0014]

In order to achieve the above object, an NC machining program creating method for a machine tool according to the present invention is capable of machining with a turning tool, ie, turning, and machining with a rotary tool, ie, rotating tool machining. An NC machining program creation method for a simple machine tool, comprising: a step of inputting a shape of a workpiece to be machined, a step of inputting a finished shape by the turning, and inputting a finished shape by the rotary tool processing. And one or more turning partial steps, which are partial steps for forming a finished shape by the turning, and a rotary tool partial step, which is a partial step for forming a finished shape by the rotary tool processing A process display procedure for displaying one or more of the turning part process and the rotary tool partial process, and displaying in the process display procedure. Creating an NC machining program by connecting the turning part process and the rotary tool part process in accordance with the order determined by the editing procedure; And a program for inserting a connection program enabling connection of each partial process to a connection portion where the turning tool portion process follows the turning portion process and a connection portion where the turning portion process follows the rotary tool portion process. Procedure.

In the above-described method for creating an NC machining program for a machine tool, the program creating procedure may include sequentially assigning different sequence numbers to the head of the connection program and inserting the same into the NC machining program. Is preferred.

In the above-described method for creating an NC machining program for a machine tool, the connection program may include a first connection process inserted into a connection portion where the rotary tool portion process follows the turning portion process; A second part inserted into the connection part where the turning part step follows the tool part step
It is preferable to include the following connection processing.

In the above-described method for creating an NC machining program for a machine tool, the step display step displays a turret tool number for designating a tool to be used in the turning part step and the rotary tool part step. Yes,
It is preferable to have a procedure for changing the turret tool number.

In the above-described method for creating an NC machining program for a machine tool, it is preferable that the turret tool number includes a turret surface number for designating a tool mounting portion of the turret and a tool number for designating a tool.

An NC machining program creating device for a machine tool according to the present invention is an NC machining program creating device for a machine tool capable of machining with a turning tool, ie, turning, and machining with a rotary tool, ie, rotating tool machining. Display means capable of displaying characters or graphics; input means for inputting data by an operator; material shape storage means for storing data of the shape of the material workpiece to be machined; Turning tool finish shape storage means for storing finish shape data, and rotary tool finish shape storage means for storing finish shape data by the rotary tool processing;
In addition to creating one or more turning partial processes that are partial processes for forming a finished shape by the turning process, one or more rotary tool partial processes that are a partial process for forming a finished shape by the rotary tool processing Step display means for creating and displaying the turning partial step and the rotary tool partial step on the display means, and changing the order of the turning partial step and the rotary tool partial step displayed by the step display means. A process sequence editing means for linking the turning partial process and the rotary tool partial process in accordance with the order determined by the process sequence editing device to create an NC machining program; and, after the turning partial process, the rotary tool partial process Each partial process is linked to a connecting portion followed by a turning portion process and a connecting portion followed by the turning portion process. And programming means for inserting the connecting program that allows, those having a combination program storage means for storing the connection program.

In the above-described apparatus for creating an NC machining program for a machine tool, the program creating means may sequentially assign a different sequence number to a leading portion of the connection program and insert the sequence number into the NC machining program. Is preferred.

In the above-described apparatus for creating an NC machining program for a machine tool, the connection program may include a first connection process inserted into a connection portion in which the rotary tool portion process follows the turning portion process; A second part inserted into the connection part where the turning part step follows the tool part step
It is preferable to include the following connection processing.

In the above-described apparatus for creating an NC machining program for a machine tool, the process display means displays a turret tool number for designating a tool to be used in the turning part process and the rotary tool part process. Yes,
It is preferable that the turret tool number is changed.

In the above-described apparatus for preparing an NC machining program for a machine tool, it is preferable that the turret tool number includes a turret surface number specifying a tool mounting portion of the turret and a tool number specifying a tool.

[0024]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a turning center as a machine tool to which the present invention is applied. The description of each member and the operation of the turning center are as described above. This turning center is controlled by the NC device 50 (see FIG. 2). An automatic program creation device 60 is connected to the NC device 50.

FIG. 2 is a block diagram showing the configuration of the automatic program creation device 60. Here, the automatic program creation device 60 is provided separately from the NC device 50,
Although connected to the device 50, the automatic program creation device 60 may be incorporated in the NC device 50. The automatic program creation device 60 is provided with a CPU 61 as information processing means for performing various data processing. The CPU 61 is connected to a ROM 63 and a RAM 64 as main storage devices via a bus 62.

The CPU 61 operates according to the system programs and data stored in the ROM 63 and the programs and data loaded into the RAM 64 (read into the memory). The programs loaded in the RAM 64 as described above include an OS (operating system) as a basic program and an automatic pro function program 6 for realizing an automatic program creation function.
41, a combined process editing program 642 for changing the order of each partial process created by the automatic professional function program 641 and editing the turret tool number, and a display for displaying characters and graphics on the display means 69 There are control programs and the like.

A parameter memory 65 is connected to the CPU 61 via a bus 62. The parameter memory 65 stores various parameters required for processing. By using a non-volatile memory, the parameter memory 65 can hold the stored contents even when the power of the machine tool is turned off. In the parameter memory 65,
Data of a connection program 651 that is inserted between the NC processing program for turning and the NC processing program for rotary tool processing and enables connection between the respective processing steps is stored. The connection program 651 has two types of data, a connection process A and a connection process B, as described later.

Further, a material shape memory 66, a turning tool finishing shape memory 67, and a rotating tool finishing shape memory 68 are connected to the CPU 61 via a bus 62. The material shape memory 66 stores the data of the shape of the material workpiece input by the operator. Turning tool finish shape memory 6
7 stores data of the finished shape in the turning process input by the operator. The rotary tool finish shape memory 68 stores finish shape data in rotary tool machining input by the operator. The memory contents of the material shape memory 66, the turning tool finishing shape memory 67, and the rotating tool finishing shape memory 68 can be retained even when the power of the machine tool is turned off by using a non-volatile memory.

Input / output devices are connected to the CPU 61 via a bus 62. As input / output devices, display means 69 for displaying characters and figures and input means 70 for an operator to input data are connected to the bus 62 via an interface circuit. CR as the display means 69
T, EL display panel, liquid crystal display, etc. can be used,
As the input means 70, a keyboard, a touch panel integrated with the display means 69, or the like can be used.

Further, a fixed disk device as an auxiliary storage device may be connected to the CPU 61 via a bus 62. In that case, the fixed disk device has a CPU 6
Various programs, data, and the like to be executed by the computer 1 are stored, and these programs and the like may be loaded from the fixed disk device to the RAM 64 and other memories as appropriate.

The cutting condition data file 71 is a data file provided on a memory or a fixed disk and storing a large number of cutting condition data. The tool data file 72 is a data file similarly provided on a memory or a fixed disk and storing a large number of tool data (data such as tool types and tool dimensions).

The process order data file 73 is a data file provided on a memory or a fixed disk and storing the order of a plurality of partial processes corresponding to machining with a turning tool and machining with a rotary tool, respectively. For example, in the case of machining with a rotary tool, milling roughing process, center machining process, drilling process, boring roughing process, chamfering process, tapping process, ..., boring finishing process, milling process An order such as a finishing step is stored. Also, in the case of machining with a turning tool, the order of transition from the rough machining process to the finishing process is stored.

The NC device 50 is connected to the automatic program creation device 60 via an interface circuit. N created by the automatic program creation device 60
The C machining program is transferred to the NC device 50 and stored in a memory or the like in the NC device 50. The NC device 50
In accordance with the C machining program, the relative movements of the turning center tool and the workpiece in the X, Y, and Z directions are controlled.
Machining is performed by controlling the rotation of the spindle 19 and the C-axis. Further, the NC device 50 controls the indexing of the turret 16 and positions a desired turning tool or rotary tool at the processing position.

FIG. 3 is a diagram showing a program confirmation creation screen displayed on the display means 69 of the automatic program creation device 60. From this screen, NC machining programs for turning and rotary tool machining are automatically created. When the F1 key is pressed, the screen shifts to a screen for creating an NC machining program for turning. On the screen for creating an NC machining program for turning, an input of the shape of the material workpiece and a finish shape of the turning are performed, and an NC machining program is automatically created. The data of the shape of the material workpiece and the data of the finished shape of the turning process input by the operator are stored in the material shape memory 66 and the turning tool finished shape memory 67.

From the program confirmation creation screen of FIG.
When the key is pressed, the screen shifts to a screen for creating an NC machining program for rotary tool machining. On the screen for creating the NC machining program for the rotary tool machining, the finish shape of the rotary tool machining is input, and the NC machining program is automatically created. The data of the finish shape of the rotary tool machining input by the operator is stored in the rotary tool finish shape memory 68. When the F5 key is pressed from the program confirmation creation screen, the screen shifts to the combining step editing screen of FIG. When the F9 key is pressed, the program confirmation creation screen is terminated and the screen shifts to a higher-level menu screen.

FIG. 4 is a diagram showing a screen display for editing the joining process. This screen is called by pressing the F5 key from the program confirmation creation screen of FIG. In the upper left part of the screen, the partial processes of the NC machining program created on the program confirmation creation screen are arranged in order and displayed as a process chart. In the order of the respective partial processes, the partial processes of the turning work are arranged first, and the partial processes of the rotary tool machining are arranged later.
In addition, there are a drill tool as a fixed tool used for turning and a drill tool as a rotary tool used for rotary tool processing. The drill tool of process number 2 is a drill tool as a fixed tool. The end face drill tool of process number 8 is a drill tool as a rotary tool. Instructions related to the operation are displayed on the right side of the process chart.

When the cursor is moved to the desired process number in the process number column at the left end of the process table on this combined process edit screen and the F3 key is pressed, the NC processing program for each partial process can be edited. Note that the process number is displayed in green in turning and in white in rotary tooling.
By pressing the F4 key, the order of the steps can be changed. Press F4 key, range 1 and range 2 below the process chart
Start number and end number can be input. When a desired process number is input here and the F4 key is pressed again, the partial process group in the range 1 and the partial process group in the range 2 are switched.

By pressing the F5 key, a process in a desired range can be transferred to a desired position. When the F5 key is pressed, the start number, end number, and transfer destination number of the range 1 on the lower side of the process chart can be input. When a desired process number is input here and the F5 key is pressed again, the partial process group in the range 1 is transferred to a position immediately above the partial process of the transfer destination number. When you press the F6 key,
The data in the turret tool number column can be changed.

In the data of "Tmm nn" in the turret tool number column, "mm" specifies the turret surface number and "nn" specifies the tool number. Turret surface numbers 1 to 10 are respectively assigned to the ten tool mounting portions of the turret 16, and by specifying the turret surface number, the tool mounting portion on which a desired tool is mounted can be determined to a machining position. it can. If the tool with the specified tool number is not mounted on the tool mounting section with the specified turret surface number, the tool specified by the automatic tool changer 30 is automatically mounted on the specified tool mounting section, Index the specified tool mounting part to the processing position.

When the F6 key is pressed on the joining process edit screen, a cursor is displayed in the data section of the turret tool number column. The cursor is moved to the data to be corrected by the cursor key and the page key, and the turret surface number, Correct the tool number data. Program 641 for automatic professional function
In the NC machining program automatically created by the above, a different turret surface number is designated for each of a series of steps performed continuously. Therefore, the number of times of tool change by the automatic tool changer 30 may be increased more than necessary. In such a case, the data of the turret surface number and the tool number can be corrected to minimize the number of times of tool change.

When the F8 key is pressed on the combined process edit screen, a subprogram called from the process program on the cursor line can be edited. When the cursor is moved to a desired process number and an erase key (not shown) is pressed, the process can be erased. After these editing operations,
When the F1 key is pressed, a new NC machining program reflecting the editing result is automatically created. At that time, different types of partial processes are used in the portion where the rotary process is connected after the partial process of the turning process and the portion where the rotary process is connected after the partial process of the rotary tool. The programs of the connection processes A and B that enable the connection of are connected.

When the F2 key is pressed on the joining process edit screen, the NC processing program can be checked by displaying a moving image of the created NC processing program on the screen. When the F9 key is pressed, the joining process editing screen is ended and the screen returns to the program confirmation creation screen of FIG.

FIG. 5 is a diagram showing an example of the replacement of the partial steps. FIG. 5A shows a program 6 for the automatic professional function.
41 shows the order of the partial processes in the NC machining program automatically created. The partial processes of process numbers 1 to 6 are turning, and the partial processes of process numbers 7 to 10 are rotary tool machining. As described above, in the NC machining program output by the automatic professional function program 641, the partial process of turning is arranged first, and the partial process of rotary tool machining is arranged later. FIG. 5B shows the result of editing and replacing the automatically created process order on the combined process edit screen. In FIG. 5B, the data of the turret tool number is corrected in addition to the change of the process order.

FIG. 6 is a diagram showing a change in the configuration of the NC machining program when the steps are exchanged as shown in FIG. FIG. 6A shows an NC machining program in the process sequence of FIG. 5A, and FIG. 6B shows an NC machining program in the process sequence of FIG. 5B. Each row in FIGS. 6A and 6B is an NC that executes each partial process.
FIG. 5 shows the processing of the machining program.
These correspond to the process numbers in (a) and (b). Lines with blank numbers at the left end are other automatically created program portions not shown in FIGS. 5A and 5B.

To change the machining type from turning to rotary tool machining, it is necessary to execute the program of the connection process A. To change the machining type from rotary tool machining to turning, the program of the connection process B is required. Need to be run.
In the NC machining program of FIG. 6A, the connection process A is arranged between the inner diameter threading process of the process number 6 and the end face finding process of the process number 7, and the connection process B is performed after the end surface tapping process of the process number 10. Are located. Thus, the mode is returned to the turning mode at the end of the NC processing program.

In the joining process edit screen, when the order of the processes is changed as shown in FIG. 5A to FIG. 5B and the F1 key is pressed to create an NC machining program, the NC machining program is changed to the state shown in FIG. ) Is changed as shown in FIG. Locations where the machining type is changed from turning to rotary tool machining (between process numbers 1, 2, 3, 4, 5, 6,
The program of the linking process A is inserted into (between 7, 8) and the machining type is changed from rotary tool machining to turning (between process numbers 2, 3, 4, 5, 6, 7, 8, 7). 9)
, The program of the connection processing B is automatically inserted.

FIG. 7 is a diagram showing an example of the connection processes A and B. FIG. 7A shows a program of the connection processing A, and FIG.
(B) shows the program of the connection processing B. These connection processes A and B are stored as a connection program 651 in the parameter memory 65 of the automatic program creation device 60.

"N5" in the first row of the connection processing A in FIG.
"0000" is the sequence number,
Is inserted into the NC machining program, "N50
000 "," N50001 ", etc., each time it is inserted, it is incremented by one. “M09” is a command to stop the supply of the cutting oil. “G80” in the second row is a command to cancel the fixed cycle, and “M05” is a command to stop the spindle rotation. The third line "G50S3000P
"2" is a command for setting a limit value of the number of rotations of the rotary tool. “M01” on the fourth line is an optional stop command.

"N5" in the first row of the connection processing B in FIG.
“1000” is a sequence number, which is actually
Is inserted into the NC machining program, "N51
000 "," N51001 ", and so on, every time it is inserted. "G18" indicates that the coordinate plane is Z-
An instruction to designate the X plane, "G97" is an instruction to cancel the constant peripheral speed control of the spindle, "G99" is an instruction to instruct feed per revolution, and "M41" is an instruction to cancel the diameter correction. “M01” on the second line is an optional stop command.

The connection processes A and B are not limited to these examples, and any other NC commands can be registered. Also,
In the concatenation process A, the first sequence number is “50,000”
, And is sequentially incremented by one. In the concatenation process B, the leading sequence number is sequentially incremented by one from “51000”, which is convenient when searching for these concatenation processes. For example, the operation becomes easy when the machining operation of the NC machining program is interrupted and then the NC machining program is restarted from the middle.

FIG. 8 is a flowchart showing a procedure for creating an NC machining program by the automatic program creating device 60. The operator inputs the shape of the workpiece in step 101. Next, in step 102, the finished shape of the turning is input, and in step 103, the finished shape of the rotary tool is input. Next, in step 104, the index position of the workpiece and the type of machining are set. Then, in step 105, an instruction to automatically create an NC machining program is issued, and an NC machining program for turning and rotary tool machining is automatically created.

Next, in step 106, operations such as changing the order of the processes and changing the turret tool number are performed on the combined process editing screen shown in FIG. At this time, since a screen change operation such as a process change operation and a turret tool number change operation can be easily performed on the screen as shown in FIG. 4, there is no need to directly edit the code of the NC machining program, and the editing operation can be easily performed. And editing errors are less likely to occur.

Then, the NC machining program is checked by displaying the machining operation of the NC machining program created in step 107 on a screen as a moving image. If there is no problem in the machining operation, the NC machining program
The program is transferred to the C device 50, and the creation of the NC machining program ends.

FIG. 9 is a flowchart showing the processing of the combining process editing program 642. The combining process editing program 642 is a program that is called from the automatic professional function program 641 and performs the processing of the combining process editing screen of FIG. When the combining process editing program 642 is called, first, in process 201, a combining process editing screen is displayed. Next, in decision 202, it is determined whether or not the F1 key has been pressed. Judgment 20 if F1 key is not pressed
In step 210, if it is pressed, an NC machining program is created from the current data.
Return to 02.

In the judgment 203, it is judged whether or not the F2 key is pressed. If the F2 key has not been pressed, the flow advances to decision 204;
A moving image check screen of the processing program is displayed, and when the moving image check ends, the process returns to the determination 202. In the next judgment 204, it is judged whether or not the F3 key is pressed. If the F3 key has not been pressed, the process proceeds to determination 205. If the F3 key has been pressed, an edit screen of the NC machining program is displayed in process 212, and if the editing is completed, the process returns to determination 202.

In the judgment 205, it is judged whether or not the F4 key is pressed. If the F4 key has not been pressed, the process proceeds to decision 206. If the F4 key has been pressed, the process is changed in step 213 according to the instruction of the operator, and the process returns to decision 202. In the next judgment 206, it is judged whether or not the F5 key is pressed. If the F5 key has not been pressed, the flow advances to decision 207;
In step 4, the transfer of the process is performed according to the instruction of the operator.

In the judgment 207, it is judged whether or not the F6 key is pressed. If the F6 key has not been pressed, the flow proceeds to decision 208, and if it has been pressed, the turret tool number is changed in process 215, and thereafter, the flow returns to decision 202. In the next judgment 208, it is judged whether or not the F8 key is pressed. If the F8 key has not been pressed, judgment 20
If the button has been pressed, an edit screen of the subprogram is displayed in step 216.
Return to 2. In the final judgment 209, it is judged whether or not the F9 key is pressed. If the F9 key has not been pressed, the process returns to the determination step 202. If the F9 key has been pressed, the combining process editing program 642 ends and returns to the calling source.

As described above, since the connection processes A and B are automatically inserted between the sub-processes when the NC machining program is created, the order of the sub-processes automatically created by the automatic program creating device is changed by the operator. Can be easily changed to the optimum order. For this reason, the processing result can be made the best by the minimum number of steps. Further, since the turret tool number automatically created by the automatic program creating device can be easily changed, machining can be performed efficiently with the number of tool changes being the minimum number.

In the above embodiment, the turning center has been described as an example of the machine tool.
The present invention can be applied to any machine tool as long as both machining with a turning tool and machining with a rotary tool are possible.

[0060]

Since the connection program is automatically inserted between the sub-processes when the NC machining program is created, the operator can easily change the order of the sub-processes to the optimum order. For this reason, the processing result can be made the best by the minimum number of steps. Also, N
There is no need to edit the code of the C machining program directly,
Since the editing operation of the process order can be easily performed, editing errors, omissions in correction, and the like are less likely to occur.

Since different sequence numbers are sequentially assigned to the head of the connection program and inserted into the NC machining program, it is convenient when searching for a connection portion of a partial process. In particular, the operation becomes easy when the machining operation of the NC machining program is interrupted and then the NC machining program is restarted from the middle.

Since the turret tool number automatically created by the automatic program creation device can be easily changed, the machining can be performed efficiently with the minimum number of tool changes.

[Brief description of the drawings]

FIG. 1 is a perspective view of a turning center to which the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration of an automatic program creation device.

FIG. 3 is a diagram showing a screen display for creating a program confirmation;

FIG. 4 is a diagram showing a screen display for editing a joining process;

FIG. 5 is a diagram illustrating an example of a change in a process.

FIG. 6 is a diagram illustrating a change in the configuration of an NC machining program when a process is changed.

FIG. 7 is a diagram illustrating an example of a connection process;

FIG. 8 is a flowchart illustrating a procedure for creating an NC machining program by the automatic program creating device.

FIG. 9 is a flowchart illustrating a process of a combining process editing program;

FIG. 10 is a diagram for illustrating a difference in a processing result according to a sequence of steps.

FIG. 11 is a diagram showing a processing result when the order of the steps is changed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bed 2 ... Z-axis guide member 3 ... Reciprocating carriage 7 ... Y-axis feed bar B ... Burr W ... Workpiece 11 ... Turret base body 16 ... Turret 17 ... Tailstock 18 ... Spindlehead 19 ... Spindle 20 ... Pulley 22 ... Pulley 21 ... V-belt 23 ... Spindle drive motor 24 ... C-axis control unit 25 ... C-axis control motor 26 ... Z-axis motor 30 ... Automatic tool changer 40 ... Tool magazine 50 ... NC device 60 ... Automatic program creation device

Claims (10)

[Claims] (1) machining with a turning tool, that is, turning;
An NC machining program creating method for a machine tool capable of machining with a rotary tool, that is, rotary tool machining, comprising: a step of inputting a shape of a material workpiece to be machined; and a step of inputting a finish shape by the turning. And a step of inputting a finished shape by the rotary tooling; and forming one or more turning partial processes as a partial process for forming the finished shape by the turning, and forming a finished shape by the rotary tooling. A process display procedure for creating one or more rotary tool sub-processes, which are sub-processes for displaying, the turning sub-process and the rotary tool sub-process, and the turning sub-process and the rotation displayed in the process displaying process. An editing procedure which enables the order of the tool part process to be changed; and the editing procedure comprising the turning part process and the rotary tool part process Therefore, an NC machining program is created by linking in accordance with the determined order, and each of a connection portion where the turning tool portion process is followed by the turning tool portion process and a connection portion where the turning tool portion process is followed by the rotary tool portion process. NC program creating method for a machine tool, comprising: a program creating procedure for inserting a linking program that enables linking of partial processes. 2. The NC machining program creating method according to claim 1, wherein the program creating step includes sequentially assigning different sequence numbers to a leading portion of the connection program and adding the sequence numbers to the head of the connection program. An NC machining program creation method for a machine tool to be inserted. 3. The method according to claim 1, wherein the connecting program includes the turning part step followed by the rotary tool part step. And a second connection process inserted into a connection part where the turning part step follows the rotary tool part step. 4. An NC machining program creating method for a machine tool according to claim 1, wherein the step displaying step includes a step of displaying a tool used in the turning part step and the rotary tool part step. And a turret tool number for designating a turret tool number. The method for creating an NC machining program for a machine tool, comprising the steps of enabling the turret tool number to be changed. 5. The method according to claim 4, wherein the turret tool number includes a turret surface number specifying a tool mounting portion of the turret and a tool number specifying a tool. A method for creating an NC machining program for a machine tool. 6. A process using a turning tool, that is, turning.
An NC machining program creating device for a machine tool capable of machining with a rotary tool, that is, rotary tool machining, a display means (69) capable of displaying characters or figures, and an input for an operator to input data. Means (70); material shape storage means (66) for storing data of the shape of the workpiece to be machined; turning tool finish shape storage means (67) for storing data of the finished shape by the turning; A rotary tool finishing shape storage means (68) for storing data of a finished shape by the rotary tool machining; and one or more turning partial processes as a partial process for forming a finished shape by the turning process, and One or more rotary tool partial processes, which are partial processes for forming a finished shape by rotary tool processing, are created, and the turning partial process and the rotary process are performed. A process display means (642) for displaying a partial process on the display means (69); and a process sequence enabling change of the order of the turning part process and the rotary tool part process displayed by the process display means (642). Editing means (642), the turning part step and the rotary tool part step are connected in accordance with the order determined by the step order editing means (642) to create an NC machining program;
Creation of a program for inserting a connection program (651) capable of connecting each partial process to a connection portion where the turning tool portion process follows the turning tool portion process and a connection portion where the turning tool portion process follows the rotary tool portion process An NC machining program creation device for a machine tool, comprising: means (642); and a connection program storage means (65) for storing the connection program (651). 7. An NC machining program creating apparatus for a machine tool according to claim 6, wherein said program creating means (642) assigns sequentially different sequence numbers to a leading portion of said connection program (651). An NC machining program creation device for a machine tool to be inserted into the NC machining program. 8. An NC machining program creating apparatus for a machine tool according to claim 6, wherein said connecting program (651) includes a step of executing said rotary tool part step after said turning part step. An NC machining program creating apparatus for a machine tool, comprising: a first connection process inserted into a subsequent connection portion; and a second connection process inserted into a connection portion where the turning portion process follows the rotary tool portion process. . 9. An NC machining program creating apparatus for a machine tool according to claim 6, wherein said step display means (642) performs said turning part step and said rotating tool part step. An NC machining program creating apparatus for a machine tool, comprising: a turret tool number for designating a tool to be used; and a tool editing means (642) for changing the turret tool number. 10. An apparatus according to claim 9, wherein said turret tool number includes a turret surface number specifying a tool mounting portion of the turret and a tool number specifying a tool. An NC machine program creation device for machine tools.