JPH0415805A - Composite working machine tool and control method for the machine tool - Google Patents

Abstract

PURPOSE:To simulate a working program on a display device by providing a working pattern discriminating means which discriminates the working pattern of a working program and a tool route calculating means which displays the tool route on a display means. CONSTITUTION:At the time of simulation of the working program, a working pattern discriminating part 25 reads out a control code to discriminate the working pattern of the working program, and a simulation control part 23 calculates the tool route in accordance with working commands in the working program. A work 40 held on a first main shaft base and a tool 10 on a first tool post are displayed in a first main shaft base-side picture GW1 on a display device 29, and the working program is simulated before working. Thus, test cut is unnecessary to shorten the working preparation time. Processes are checked by simulation with respect to various working patterns to perform efficient working.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a multi-tasking machine tool having two headstocks and two tool rests, and a control method for the machine tool.

(b), Prior Art Recently, a multitasking machine tool has been proposed which has a first headstock and a second headstock facing each other, and has a first tool rest and a second tool rest corresponding to each headstock. There is.

In the compound machine tool, the first headstock side (the first headstock and the first tool rest) and the second headstock side (the second headstock and the second tool rest) belong to different control systems. 1st
X1Zi-axis control on the first headstock side regarding X8-axis movement or Z□-axis movement of the headstock and first tool rest, and second headstock side control regarding X2-axis movement or z22-axis movement of the second headstock and second tool rest. By independently controlling the two X2Z axes on the side, two workpieces can be machined simultaneously and independently, and the workpiece can be passed between the first and second headstock sides and then transferred to the first headstock.
The process and the second process can be performed continuously (that is, processing can be performed under the same control as when two ordinary NG lathes are organically combined).

When checking the machining program prior to such independent machining, a simulation is performed by drawing the machining instructions in the machining program as a tool path on one display device. That is, in order to properly display the tool path, the display coordinate system is set in advance on the display device in a manner that corresponds to the XY2 machining axis control or the X2Z 2 axis control, and the X, By developing machining commands related to Z, axis control or X2Z 2-axis control on the display coordinate system, simulation of X8-axis operation or 2□-axis operation regarding the first headstock and first tool rest on the first headstock side , X2-axis motion or z22-axis motion simulation regarding the second headstock and second tool rest on the second headstock side is selectively performed by switching one screen.

(C) 0 Problems to be Solved by the Invention In the multi-purpose machine tool, it is possible to perform machining with various machining patterns in addition to the above-mentioned independent machining, and the headstock and tool rest belonging to different control systems are used. (1st headstock and 2nd tool post, or 2nd headstock and 1st tool post) (In this case, 1. Unlike the XZ-axis control of normal NC lathes, etc., interpolation control is used. processing).

However, since the display coordinate system of the first display device is set to correspond to XXZ, axis control or X2Z two-axis control (similar to a normal NC lathe, etc.), the machining program simulation can only be performed for the above-mentioned independent machining. However, for machining patterns such as cross machining, which are not X1Z single-axis control or X2Z axis control, but are based on interpolation control, the machining program could not be simulated on the display device.

Therefore, for such machining patterns, a test cut is required to check the machining start position prior to machining, which takes time to set up the machining process, and the process is not checked by simulation, making it less efficient. It was not possible to process it.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a multi-tasking machine tool that can suitably simulate a machining program on a display device in accordance with a machining pattern, and a control method for the machine tool. That is.

(d) Means for Solving Zero Problems, ie 1 The present invention provides a first headstock (3) and a second headstock (5) that are provided facing each other so as to be able to approach and separate from each other. The first tool rest (7) and the second tool rest (9) can be freely moved and driven relative to the head stock in a manner corresponding to the first and second head stock. The multi-tasking machine tool (1) is provided with a display means (29) for displaying the tool path based on a predetermined display coordinate system, and a machining program storage means (29) for storing a machining program (PRO).
15), and a machining pattern command storage means (PRO) for storing a machining pattern command (FAT) indicating a machining pattern of the machining program (PRO), and Based on the pattern command (FAT), the machining program (P
A machining pattern determining means (25) is provided for determining a machining pattern of the previous nib program (PRO), which analyzes the machining program (PRO) and determines the machining pattern of the previous nib program (PRO) determined by the machining pattern determining means (25). Based on this, the tool path of the previous nibrow program (PRO) is determined by coordinate transformation of the machining command in the previous nibrow program (PRO) to the display coordinate system, and
) and the display of the workpiece (40) held on the first tool rest (
7) or the display of the second tool rest (9), or the display of the workpiece (40) held on the second headstock (5) and the second tool rest. By selectively combining the display on the stand (9) or the display on the first turret (7), the wet tool path is indicated by the display means (29).
) is provided with a tool path calculation means (23) displayed on the top.

Further, the present invention has a first headstock (3) and a second headstock (5) that are provided facing each other so as to be able to approach and separate from each other. In a multi-tasking machine tool (1) in which a first tool rest (7) and a second tool rest (9) are provided in correspondence with the head stock so as to be movable and driven relative to the head stock, A machining pattern command (FAT) is stored in a program (PRO), and when checking the machining program (PRO) prior to machining, the machining pattern command (FAT) is read from the previous nib program (PRO), Based on the read machining pattern command (FAT), the machining pattern of the previous nib program (PRO) is determined, the pre nib program (PRO) is analyzed, and the machining pattern of the determined pre nib program (PRO) is determined. Based on the machining pattern, the tool path of the previous nib program (PRO) is determined by coordinate transformation of the machining command in the pre nib program (PRO), and the workpiece (4o) held on the first headstock (3) is ) and the display of the first tool rest (7) or the second tool rest (
9), or the display of the workpiece (40) held on the second headstock (5) and the display of the second tool rest (9) or the first cutter. The submerged tool path is displayed on the display means (29) in selective combination with the display on the stand (7).

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings.

The same applies to the column "r(e), action" below.

(e) 0 Effect With the above-described configuration, the present invention operates so that machining programs (PRO) of one variety of machining patterns are simulated on the display means (29).

(f), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a plan view showing one embodiment of a multi-tasking machine tool according to the present invention, FIG. 2 is a diagram showing a moving area of the tool rest of the multi-tasking machine tool shown in FIG. 1, and FIG. FIG. 4 is a control block diagram showing one embodiment of the multi-tasking machine tool according to the present invention; FIG. 4 is a plan view showing independent machining in the multi-tasking machine tool shown in FIG. 1;

Figure 5 shows the first part of the multi-tasking machine tool shown in Figure 1.
A plan view showing cross processing on the headstock side.

Figure 6 shows the second part of the multi-tasking machine tool shown in Figure 1.
Fig. 7 is a plan view showing cross machining on the headstock side, Fig. 7 is a plan view showing Swiss machining in the multitasking machine tool shown in Fig. 1, Fig. 8 is a schematic diagram showing the comprehensive machining program, and Fig. 9 is a plan view showing cross machining on the headstock side. , a diagram showing the display form of the screen on the first headstock side of the display device in the simulation of independent machining shown in FIG. 4, and FIG. FIG. 11 is a diagram showing the display form of the screen on the first headstock side of the display device in the simulation of cross machining on the first headstock side shown in FIG. A diagram showing the display form of the second headstock side screen of the display device in the simulation of cross machining on the first headstock side shown in Figure S, and Figure 13 is a diagram showing the cross machining on the second headstock side shown in Figure 6. FIG. 14 is a diagram showing the display form of the first headstock side screen of the display device in the simulation of FIG. It is a figure showing a display form.

A multi-tasking machine tool 1 is shown in FIG.

It has a fuselage 2, and 5 first headstocks 3 are installed on both sides of the fuselage 2.
in the direction of arrow A□5B1, which is the Z0 axis direction.

A second headstock 5 is provided so as to be freely movable and driven in the directions of arrows A2 and B2, which are the 22-axis directions.
5 indicates the respective movement directions of arrows A□ and B, and arrows A2. They are arranged so that their directions coincide with the B2 direction and face each other. Workpiece spindles 3a and 5a are rotatably supported on each headstock 3.5 with their axes aligned, and through holes 3 are provided in the workpiece spindles 3a and 5a in the direction of the spindle axis.
chucks 3b, 5b are attached to the tips of the workpiece spindles 3a, 5a. Also,
The carriage 6.8 is mounted on the fuselage 2 in the direction of the Z axis and the arrow A3. B. Direction, arrow A4. It is supported so that it can be moved and positioned in the B4 direction. The carriage 6 has the first tool rest 7 in the direction of the X1 axis, arrows C, , D
The tool rest 9 is provided so as to be freely movable and driven in the directions of arrows C2 and B2, which are the X2-axis directions, and each tool rest 7.9 is moved in the directions of arrows C and D, which are the moving directions, and arrows C2 and B2.
Arrows A□, B2 whose directions are the movement directions of each headstock 3.5
They are arranged in a form perpendicular to the directions of the arrows A2 and B2 (therefore, the directions of the arrows C□, D□ and the force directions of the arrows C2 and B2 are parallel). Each tool rest 7.9 is equipped with a polygonal cylindrical turret 7a, 9a, and each of the turrets 7a, 9a is arranged with side surfaces 7b, 9b facing each other, that is, a rear arrangement. It is installed with. Each turret 7a, 9a is equipped with a turning tool 10 such as a cutting tool and a rotary tool 10 such as a milling tool so as to be replaceable.

Further, as shown in FIG. 2, the first tool rest 7 and the second tool rest 9 have moving areas AREl and ARE2 in the directions of arrows A and B, respectively.
2 have mutually overlapping shared movement areas ARE3.

Further, the multitasking machine tool 1 is provided with a numerical control device 11, and the numerical control device 11 has a main control section 12, as shown in FIG.

The main control section 12 is connected to a machining program memory 15, a first axis control section 19. second axis control section 20,
An input control section 21, a display control section 22, a simulation control section 23, a machining pattern determination section 25, and the like are connected. A plurality of drive motors 30 for driving each control axis are connected to the first axis control section 19 and the second axis control section 20, and an input device 27 such as a keyboard is connected to the input control section 21.
is connected to the display control section 22, and a display device 29 such as a CRT display is connected to the display control section 22.

Since the multi-tasking machine tool 1 has the above configuration,
When machining a workpiece, the main control unit 12 selects a machining program P corresponding to the workpiece from the machining program memory 15.
Read R○. Then, based on the machining program PR○, the first axis control section 19 and the second axis control section 20 control the first spindle stock 3, the first tool rest 7,
The second headstock 5 and the second tool rest 9 are moved and driven as appropriate, and a single piece of wire gripped by the workpiece spindle 3a or the workpiece spindle 5a is machined in various machining patterns.

As an example of the processing pattern, the 4th rj! In the independent machining shown in i, the first axis control unit 19 executes the machining program PR.
Based on the machining command during O, the first headstock 3 is controlled on the Z□ axis to move appropriately in the arrow A□, B□ force directions, and the first tool rest 7 is controlled on the X□ axis to move in the arrow C1, D direction. □The tool 10 on the first tool rest 7 processes the workpiece 40 gripped by the workpiece spindle 3a of the first headstock 3 by appropriately moving and driving in the force direction.

Further, the second axis control unit 20 controls the second headstock 5 along the Z2 axis to appropriately move the second headstock 5 in the directions of arrows A2 and B2, and moves the second tool rest 9 along the X axis.
By controlling the two axes and driving appropriately in the directions of arrows C2 and B2,
Workpiece 40 gripped by workpiece spindle 5a of second headstock 5
This processing is performed using the tool 10 on the second tool post 9. In this way, while the first process is being performed on a predetermined workpiece 40 on the first headstock 3 side, the second process is being performed on another workpiece 40 on the second headstock 5 side. In this way, the first headstock 3 side and the second headstock 5 side are each independently,
Two workpieces 40 are processed simultaneously. Also.

The workpiece 40 that has completed the second process in the second headstock 5 is carried out from the multitasking machine tool 1, and is transferred to the first headstock 3 side.
The workpiece 4o whose process has been completed is transferred from the first headstock 3 to the second headstock 5, and a new workpiece 4o is transferred to the first headstock 3.
is carried in, and the first process on the first headstock 3 side and the second process on the second headstock 5 side are continuously performed on one workpiece 40. .

In addition, as already mentioned, the first tool rest 7 and the second tool rest 9
has a shared movement area ARE3 shown in FIG. It becomes possible to perform so-called cross machining in which machining is performed using two turrets 9, and even machining in which both turrets 7.9 are used together. Further, this also applies to the workpiece held on the second headstock 5. Furthermore, two headstocks 3
．． 5 holds the shaft work through the through holes 3c and 5C, and moves the two headstocks 3.5 synchronously to process the shaft work without using a steady rest. It is also possible to perform so-called Swiss processing in which a long shaft workpiece is processed by repeating the drawing operation of drawing from the holes 3c and 5c.

That is, as another example of the processing pattern, the first pattern shown in FIG.
For cross machining on the headstock 3 side.

The second axis control unit 20 controls the second tool rest 9 along 74 axes to appropriately move and position the second tool rest 9 in the directions of arrows A4 and B4.
is controlled along the X2 axis and driven to move in the directions of arrows C2 and B2 as appropriate. The first axis control section 19 controls the Z of the second tool post 9 necessary for cross control.

Machining data such as the axis position and tool information of the tool 10 mounted on the second tool post 9 is imported from the second axis control section 20, and based on the imported machining data, the
The machining program P is controlled by interpolation as shown in 02.
Based on the machining command in Ro, control the first headstock 3LZ axis and move to the arrow.

The workpiece 40 gripped by the workpiece main #3a of the first headstock 3 is machined by the tool 1o on the second tool rest 9 by appropriately moving and driving in the B machining direction. In addition, in the cross machining on the second headstock 5 side shown in FIG. After controlling the axis to move and position appropriately in the direction of arrow A3B, the first tool rest 7 is controlled in the direction of arrow C1 based on the machining command in the machining program PRO.
, D as appropriate. Then, the second axis control unit 20 transmits machining data such as Z and axis position of the first tool rest 7 necessary for cross control and tool information of the tool 10 mounted on the first tool rest 7 to the first axis control unit. 19, and performs interpolation control in the same way as the first headstock 3 side based on the imported machining data, and controls the second headstock 5 along 22 axes based on the machining commands in the machining program PRO to move the arrow A2. ,B2
The workpiece spindle 5 of the second headstock 5 is moved in the direction as appropriate.
The workpiece 40 gripped by a is machined by the tool 10 on the first tool post 7.

Further, in the Swiss machining shown in FIG. 7 as yet another example of the machining pattern, the first axis control section 19 and the second axis control section 2
0 is determined by interpolation control so that 5 first headstock 3. The second headstock 5 is synchronously and appropriately moved in the directions of arrows A and B by controlling the Z' axis, and the first tool rest 7 is appropriately moved and driven in the directions of arrows C1 and B1 by controlling the X and axis. Alternatively, by controlling the second tool rest 9 along the X2 axis and driving it to move in the directions of arrows C2 and B2 as appropriate), the through holes 3c and 5 are formed in the workpiece spindles 3a and 5a of the two headstocks 3.5.
The part 39a to be machined is held by the chucks 3b and 5b of the elongated shaft work 39 held through the chucks 39a and 39c.
This processing is performed using the tool 10 on the first tool rest 7 (or second tool rest 9).

Then, when the machining of the part 39a is completed.

Loosen the chuck 5b, move the second headstock 5 relatively close to the first headstock 3, and move the machined part 39a onto the chuck 5b.
At the same time, loosen the chuck 3b.

It is stored in the through hole 5C of the workpiece main shaft 5a, and the second
The headstock 5 is moved away from the first headstock 3,
Unprocessed part 39b by the chuck 5b of the second headstock 5
The shaft work 39 is moved in the direction of arrow B by pulling it out from the through hole 3C of the workpiece main shaft 3a, and in this state, the chuck 3b is closed, and the unprocessed part 39b held between the chucks 3b and 5b is machined as described above. This is done in the same manner as the processing of the portion 39a.

In this way, in the multitasking machine tool 1.

Machining is performed using various machining patterns based on the family program PRO. Prior to machining, the operator or programmer displays the machining program PRO on the display
9 to check and modify the family Niprogram PRO.

A plurality of group Niprogram programs PR○ are stored in the general machining program GPR shown in FIG. has been done.

That is, the control code PAT indicates that the group Nibra program PRO□ is a program related to independent machining on the first headstock 3 side shown in FIG. Indicates that the program is related to independent machining on the stand S side, and the control need F
AT indicates that the group Niprogram program PRO is a program related to cross machining on the first headstock 3 side shown in FIG. The control code FAT and PROS indicate that the program is related to cross machining, and the control code PAT6 indicates that the program is related to Swiss machining on the first headstock 3 side shown in FIG. ○6 indicates a program related to Swiss machining on the second headstock 5 side.

In addition, the display device 29 is set to selectively display the first headstock side screen GW shown in FIG. 9 and the second headstock side screen GW2 shown in FIG. 10 by switching as appropriate. On the first headstock side screen GW1, the G machine and G2□ display coordinate system consisting of GX, axis, and G2□ axis corresponds to the G machine□ axis corresponds to the X□ axis, and the G2□ axis corresponds to the Z□ axis. On the second headstock side screen GW2, the G machining 2G22 display coordinate system consisting of 2 GX axes and 2 Gz axes is set in advance to be 0.
The 2nd axis is the X2 axis.

The G2□ axis is set in advance to correspond to the 22nd axis.

Then, when simulating the machining program PR01 in the general machining program GPR, the machining pattern determination unit 25 reads the control code PAT machining, and the machining pattern of the machining program PRO□ is
It is determined that the side is independent machining. Then, the simulation control unit 23 analyzes the machining program PRO1 and calculates a tool path from the machining commands in the machining program PR○. At this time, the processing program P
The independent machining on the first headstock 3 side that was determined as the R○1 machining pattern is related to X machine 2□ axis control, and the first headstock side screen GW□ of the display device 29 shows G machine □G2□. Since the display coordinate system is set in advance so that G machining, the axis corresponds to the calculate. Then, the first headstock side screen GW of the display device 29
As shown in FIG. 9, the workpiece 40 held on the first headstock 3 and the tool 10 on the first tool rest 7 are displayed, and a sign fiMK indicating that the simulation is independent machining is displayed. G is displayed on the display device 29, and G and G2 are displayed on the display device 29.
□ The machining program PR○1 is simulated with the X1-axis motion and 21-axis motion developed as a tool path on the display coordinate system. Also.

Similarly, when simulating the machining program PR○2, the machining program PRO2 is
When it is determined that the machining pattern is independent machining on the second headstock 5 side, the independent machining on the second headstock 5 side is X2Z,
This is related to axis control, and the GzzGz□ display coordinate system is preset on the second headstock side screen GW2 of the display device 29 so that the GX2 axis corresponds to the X2 axis and the G2□ axis corresponds to the 22nd axis. Therefore, the simulation control unit 2◇ analyzes the machining program PR○2 and calculates the tool path without performing coordinate transformation on the machining commands in the machining program PRO2. Then, the second headstock side screen G of the display device 29
W, includes a workpiece 40 held on the second headstock 5 and a second
The tool 10 on the tool rest 9 is displayed, and a sign MK indicating that the simulation is an independent machining is displayed, and on the display device 29, G machining 2 G 2 □ X2 on the display coordinate system is displayed.
The axis movement and Z22 axis movement are developed as a tool path,
A simulation of the machining program PRO□ is performed.

In addition, the machining program P in the general machining program GPR
When performing the simulation of R03, the machining pattern determination unit 25 reads the control code PAT3 and determines that the machining pattern of the machining program PR○ is cross machining on the first headstock 3 side. Then, the simulation control unit 23 analyzes the machining program PR○3 and calculates a tool path from the machining commands in the previous nib program PR○3.
The cross machining on the first headstock 3 side that was determined as the machining pattern is related to X2-axis control and Z1-axis control, and 1
First headstock side screen of display device 29 G machining □ G2 □ of GW machining
It does not correspond to the display coordinate system. Therefore, if the machining pattern is determined to be cross machining on the first headstock 3 side, when calculating the tool path, in order to properly display the tool path, The tool path is calculated so that the X2 axis coordinates correspond to the G machining and axis coordinates by replacing them with the X2 axis, and the 2□ axis coordinates are shifted accordingly to correspond to the G2□ axis coordinates. . That is, the machining commands in the machining program PR○, as shown in Japanese Patent Laid-Open No. 64-82-202, are based on the distance between the 2nd machining origin point and the z2 axis origin, the 74th axis movement distance of the second tool rest 9, etc. The tool path is calculated by coordinate transformation. Then, on the first headstock side screen GW of the display device i29, as shown in FIG. 40 and the tool 10 on the second turret 9 are displayed, and a sign MK3 indicating that it is a cross machining simulation is displayed.
The axis movement and Z11 axis movement are developed as a tool path,
A simulation of the machining program PRO3 is performed. At this time, the second headstock side screen GW of the first display device 29,
As shown in FIG. 12, the workpiece 40 held on the second headstock 9 and the tool 10 on the second tool rest 9 are displayed as they are. Similarly, when simulating the machining program PRO, the machining pattern determination unit 25
When it is determined based on the control code FAT4 that the machining pattern of the machining program PRO is cross machining on the second headstock 5 side, the cross machining on the second headstock 5 side is This is related to axis control and 22-axis control, and G-work 2G on the second headstock side screen GW2 of the display device 29.
2□ Since it does not correspond to the display coordinate system, the simulation control unit 23 analyzes the machining program PR04 and changes the The tool path is calculated so that the X and axis coordinates correspond to the GX2 axis coordinates as they are by replacing them with the X□ axis, and accordingly, the Z2 axis coordinates are shifted to correspond to the G2□ axis coordinates.

That is, the machining command in the machining program PRO4 is
As shown in 4-82202, the tool path is calculated by performing coordinate transformation based on the distance between the Z8 axis origin and the Z22 axis origin, the 23 axis movement distance of the first tool rest 7, etc. Then, on the second headstock side screen GW of the first display device 29, as shown in FIG. 40 and the first turret 7
The tool 10 above is displayed, indicating that it is a cross machining simulation! 1tMK4 is displayed,
A simulation of the machining program PRO4 is performed on the display device 29, with the X□-axis motion and the 22-axis motion developed as a tool path on the G machining 2G2□ display coordinate thread. At this time, the first headstock side screen GW□ of the first display device 29 shows the workpiece 40 held on the first headstock 9 and the tool 10 on the first tool rest 7, as shown in FIG. It will be displayed as is. Therefore.

Since machining programs PRO, PR04 can be simulated on the display device 29 not only for independent machining but also for cross machining, there is no need for test cuts to check the machining start position, reducing machining setup time. In addition to being able to shorten the time, it is also possible to check the process by simulation and perform efficient machining.

In addition, the machining program P in the general machining program GPR
When simulating RO, the machining pattern determination unit 25 uses the control code FAT to
When it is determined that the machining pattern of the machining program PR○5 is Swiss machining on the first headstock 3 side, the Swiss machining on the first headstock 3 side is performed using X1-axis control and the first. This is related to the Z'-axis control common to the second headstock 3.5, and the display!
Since it does not correspond to the G machining and G2□ display coordinate systems of the first headstock side screen GW of i29, the simulation control unit 23 analyzes the machining program PRO5 and calculates the tool path. In order to properly display the tool path, the Z□ axis that corresponded to the G2□ axis was replaced with the 2' axis, and the machining command in the machining program PRO was changed to the distance between the 2' axis origin and the 21 axis origin. The tool path is calculated by coordinate transformation based on the following. Then, the calculated tool path is displayed on the first headstock side screen GW of the display device 29.
A simulation of machining program PR05 is performed. Similarly, when simulating the machining program PRO, the machining program PRO is
When it is determined that the machining pattern of , is Swiss machining on the second headstock 5 side, the Swiss machining on the second headstock 5 side is
Since it is related to two-axis control and Z'-axis control and does not correspond to the G Xi G Z□ display coordinate system of the second headstock side screen GW2 of the display device 29, the simulation control unit 2
3, when calculating the tool path by analyzing the machining program PRO, in order to properly display the tool path,
The tool path is calculated by replacing the z2 axis, which corresponds to the G2□ axis, with the 2' axis, and converting the machining commands in the machining program PROG into coordinates based on the distance between the 2' axis origin and the 22 axis origin, etc. do.

Then, the machining program PRO is displayed in the form of displaying the calculated tool path on the second headstock side screen GW2 of the first display device 29.
, is simulated.

Therefore, regarding Swiss processing, the processing program PR○6
, PRO, can be simulated on the display device 29, so there is no need for test cutting to check the machining start position, etc., which reduces machining setup time and allows the process to be checked by simulation. Efficient processing can be performed.

In addition, in the above-described embodiment, the first headstock 3 and the second
We have described the case in which the headstocks 5 are each movable and driven in the Z-axis direction, but it is sufficient that the two headstocks 3.5 can be relatively moved toward and away from each other when transferring the workpiece.
One of the two headstocks 3.5 may be fixed to the machine body 2. In this case, at least the tool rest corresponding to the headstock fixed to the machine body 2 is made movable and driven in two axial directions.

In the above-mentioned embodiment, a case was described in which the tool rest 7.9 was moved in the Z, axis, and z4 axes during cross machining.
Alternatively, it is sufficient if the second headstock 5 and the first tool rest 7 can be made relatively close to each other, so the tool rest 7.9 is
It is movable only in the axial direction, and the headstock 3.5 has 71 axes,
It may also be moved in two z-axes. In this case as well, the machining program can be subjected to coordinate transformation and simulation.

(g) 8 Effects of the Invention As explained above, according to the present invention, the first headstocks 3 are provided facing each other so as to be able to approach and separate from each other.
and a first headstock such as a second headstock 5, and a second headstock such as a second headstock 5.
In a multi-tasking machine tool 1 in which a first tool rest and a second tool rest such as a tool rest 7 and a second tool rest 9 are provided so as to be movable and driven relative to the headstock, the tool path is set in a predetermined direction. A display means such as a display device 29 for displaying based on a display coordinate system is provided, a machining program storage means such as a machining program memory 15 for storing a machining program PR○ is provided, and a control code FAT indicating a machining pattern of the machining program PRO is provided. A machining pattern command storage means for a machining program PR○ etc. is provided for storing machining pattern commands such as machining program PR○, and the machining pattern of the machining program PR○ is determined based on the machining pattern command stored in the machining pattern command storage means. A machining pattern determining unit such as a machining pattern determining unit 25 is provided to analyze the machining program PRO and determine the machining in the machining program PRO based on the machining pattern of the machining program PRO determined by the machining pattern determining unit. The tool path of the machining program PR○ is determined by coordinate transformation to the display coordinate system before the command, and the display of the workpiece held in the first head stock and the display of the first tool post or the second tool post are calculated. selectively combining the display of the tool post, and/or selectively combining the display of the workpiece held in the second headstock with the display of the second tool post or the display of the first tool post; In combination, the tool path calculation means such as the simulation control unit 23 which displays the wetted tool path on the display means is provided. It can be simulated above. Therefore 1
Regarding various machining patterns, before machining, it is possible to check the machining program PRO, such as checking the machining start position, by simulation, so test cuts are not required and machining setup time can be shortened. Moreover, efficient processing can be performed by checking the process by simulation regarding various processing patterns.

In addition, the present invention has a first headstock and a second headstock such as a first headstock 3 and a second headstock 5, which are provided facing each other so as to be able to approach and separate from each other. etc. The first tool rest and the second tool rest, such as the first tool rest 7 and the second tool rest 9, are moved relative to the said head stock in a manner corresponding to the first and second head stock. Multi-tasking machine tool 1 that can be freely installed
, the control code FAT is entered in the machining program PRo.
etc. are stored, and when checking the machining program PRO prior to machining, the machining pattern command is read from the machining program PRO, and based on the read machining pattern command,
A form in which the machining pattern of the machining program PR○ is determined, the machining program PRO is analyzed, and the machining instructions in the machining program PRO are coordinate-transformed based on the determined machining pattern of the machining program PR○. Then, find the tool path for the machining program PR○, and
The display of the workpiece held on the headstock of the headstock and the display of the first toolrest or the display of the second toolpost are selectively combined, and/or the display of the workpiece held on the second headstock. The obtained tool path is displayed on display means such as the display device 29 by selectively combining the display and the display on the second tool post or the first tool post. With regard to various machining patterns, it is possible to check the machining program PRO, such as checking the machining start position, by simulation, so test cuts are not required and machining setup time can be shortened. By checking, efficient processing can be performed.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of a multi-tasking machine tool according to the present invention, FIG. 2 is a diagram showing a moving area of the tool rest of the multi-tasking machine tool shown in FIG. 1, and FIG. A control block diagram showing one embodiment of the multi-tasking machine tool according to the present invention, FIG. 4 is a plan view showing independent machining in the multi-tasking machine tool shown in FIG. 1, and FIG. First in processing machine tools
FIG. 6 is a plan view showing cross machining on the headstock side, FIG. 6 is a plan view showing cross machining on the second headstock side of the multitasking machine tool shown in FIG. Figure 8 is a plan view showing Swiss machining in a processing machine tool, Figure 8 is a schematic diagram showing the comprehensive force U nibogram, Figure 9 is a diagram showing the first headstock side screen of the display device in the independent machining simulation shown in Figure 4. Figure 1o is a diagram showing the display format of the second headstock side screen of the display device in the independent machining simulation shown in Figure 4. Figure 11 is the first spindle shown in Figure 5. FIG. 12 is a diagram showing the display form of the first headstock side screen of the display device in the simulation of cross machining on the table side. FIG. 13 is a diagram showing the display form of the headstock side screen, and FIG. The figure is a diagram showing the display form of the second headstock side screen of the display device in the simulation of cross machining on the second headstock side shown in FIG. 6. 1... Multi-tasking machine tool 3... First headstock (first headstock) 5... Second headstock (second headstock) 7... The first turret (
1st turret) 9...2nd turret (2nd turret) 1
5... Machining program storage means (machining program memory) 23... Tool path calculation means (simulation control section) 25... Machining pattern determining means (machining pattern determining section) 29... Display means ( Display device) FAT... Machining pattern command (control code) PR
○...Machining program Machining pattern command storage means Applicant Yamazaki Mazak Co., Ltd. Agent Patent attorney Phase 1) Shinji (1 idiot) Figure Figure Figure 10 Figure MK□ Figure

Claims (2)

[Claims] (1) A first headstock and a second headstock are provided facing each other so as to be able to approach and separate from each other, and a second headstock is provided in a manner corresponding to the first and second headstocks. A multitasking machine tool in which a first turret and a second turret are movably driven relative to the headstock, further comprising: a display means for displaying a tool path based on a predetermined display coordinate system; A machining program storage means is provided for storing a machining program, a machining pattern command storage means is provided for storing a machining pattern command indicating a machining pattern of the machining program, and based on the machining pattern command stored in the machining pattern command storage means, , further comprising a machining pattern determining means for determining a machining pattern of the machining program, which analyzes the machining program and determines the machining pattern in the machining program based on the machining pattern of the machining program determined by the machining pattern determining means. The tool path of the machining program is obtained by converting the commands into the display coordinate system, and the display of the workpiece held in the first headstock and the display of the first tool post or the second tool post are determined.
in selective combination with the display on the tool rest, and/or
The determined tool path is displayed on the display means by selectively combining the display of the workpiece held on the second head stock and the display of the second tool post or the first tool post. A multi-tasking machine tool configured with a display tool path calculation means. (2) A first headstock and a second headstock are provided facing each other so as to be able to approach and separate from each other, and a second headstock is provided in a shape corresponding to the first and second headstocks. In a multi-tasking machine tool in which a first turret and a second turret are movably driven relative to the headstock, a machining pattern command is stored in a machining program, and a machining pattern command is stored in the machining program prior to machining. When checking a machining program, read the machining pattern command from the machining program, determine the machining pattern of the machining program based on the read machining pattern command, and analyze the machining program to make the determination. Based on the machining pattern of the machining program,
In the form of coordinate transformation of the machining command in the machining program,
determining the tool path of the machining program, and selectively combining the display of the workpiece held in the first headstock and the display of the first tool post or the second tool post; and/or Displaying the determined tool path on the display means by selectively combining the display of the workpiece held on the second head stock and the display of the second tool post or the display of the first tool post. A control method for a multi-tasking machine tool constructed in this manner.