JPH10143213A - Multi-surface working machine and multi-surface working method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the damage of work and mechanical member or the like caused by a program error regardlessly of the programming skill of operator and to sufficiently effectively utilize the advantage of four-axis control (the stroke of Z axis + W axis). SOLUTION: A control part 21 has a conversion control part 22 for performing Z/W axis one-axis command two-axis control by checking the respective driving conditions of a four-axis control five-plane working machine in a working program (such as the drive of a Z axis preferential rather than a W axis or the interference or stroke remaining amount of work and a cross rail 3), numerical control part 23 for performing numerical control so as to variously work the respective planes of the work corresponding to a command due to conversion data from this conversion control part 22, and motor driving control part 24 for controlling the driving of respective servo motors Mx, My, Mz, Mw and Mt for axis driving or the like based on a command from this numerical control part 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a multi-surface processing machine such as an NC (numerical control) processing machine for surface processing and a multi-surface processing method.

[0002]

2. Description of the Related Art Conventionally, this type of multi-face processing machine has been used to obtain a type of cutting such as drilling, tapping, chamfering and milling, and a predetermined processing shape on a workpiece as a workpiece. The cutting position of the cutting tool for cutting, the material of the work such as iron, brass and aluminum,
The operator inputs data such as the optimum cutting speed according to the material of the cutting tool such as tool steel and stainless steel and the rotation speed as a machining program, and automatically performs various machining at predetermined positions on the workpiece by numerical control. Met.

[0003] Among such multi-face machining machines, a five-face machining machine is mainly controlled by three axes of X-axis, Y-axis and Z-axis in a three-dimensional orthogonal coordinate system. There is also a four-axis control processing machine including a W-axis parallel to. 5 of this 4-axis control
The surface machining software conforms to the 3-axis control specification. For example, the fourth axis, W-axis, is output only at the time of positioning to the first origin position (w0), and subsequent operations are left to the program of the operator. I was Depending on the skill of the operator, it is difficult to use the Z axis and W axis properly.
In fact, no special processing using the W-axis of the axis was performed.

Here, the five surfaces on which the work is processed are, for example, the upper surface of the work and its four side surfaces (front, rear, right and left) when the work is placed on a table.

FIG. 6 is a front view showing a state of drilling by a conventional five-sided processing machine.

In FIG. 6, a pitch dimension of 500 mm is provided on a right side face 61 a of a workpiece 61 having a height of 600 mm.
The figure shows a case where two holes 62 and 63 having a diameter of 50 mm distributed at the center are drilled, and a case where a hole 63 is drilled 500 mm below the hole 62 after the hole 62 is drilled. At this time, a drill 65 having a diameter of 50 mm is mounted on the attachment member 64, and the attachment member 64 is a quill 6 for moving the Z-axis of the five-sided processing machine.
6 is attached. This quill 66 has a head member 67.
Can move up and down by 600 mm as a full stroke Zst so as to be able to move back and forth from the lower end of the
Already 400mm below, 200
mm. The head member 67 is configured to be movable in the left and right directions with respect to the cross rail 68 together with the quill 66, and the cross rail 68 is movable in the vertical direction (W-axis direction) together with the quill 66 and the head member 67. Is configured. Further, the quill 66 is transmitted with the rotational driving force from the head member 67 being bent 90 degrees to the drill 65 via a bevel gear (not shown) in the attachment member 64, and the work 61 is rotated.
Upper and lower two holes 62, 6 having a diameter of 50 mm
3 can be automatically drilled by numerical control.
Reference numeral 69 denotes a table on which the workpiece 61 can be placed and movable in the front-rear direction (X-axis direction).

With this configuration, for example, when drilling the upper hole 62 and then drilling the lower hole 63, the operator is required to reduce the remaining stroke of the quill 66 to two.
The quill 66 for Z-axis movement in consideration of the
Instead of driving the quill 66 downward, the quill 66 and the quill 66 are commanded to move the W-axis moving cross rail 68 by 500 mm in the downward direction (W-axis direction). Then, the drill 65 is moved leftward (Y-axis direction) by a predetermined distance to drill a hole 63 having a predetermined depth. Also, the method of the movement command for the 500 mm pitch by the operator is not limited to this.
The remaining Z-axis stroke of the quill 66 for Z-axis movement is 20.
After moving 0 mm downward (Z-axis direction), the cross rail 68 for W-axis movement may be moved 300 mm downward (W-axis direction) together with the quill 66 for Z-axis movement. Further, the operator moves the quill 66 for Z-axis movement by 100 mm downward (in the Z-axis direction) by 100 mm, and then moves the cross rail 68 for W-axis movement by 40 mm.
Quill 6 for Z-axis movement downward by 0 mm (W-axis direction)
6 may be moved together. The point is that the operator can use the quill 66 for Z-axis movement and the cross rail 6 for W-axis movement.
By using 8, the tip of the drill, which is a cutting tool, may be moved directly below by a pitch of 500 mm.

[0008]

As described above, the X axis, Y
A 5-plane machining machine capable of numerically controlling four axes, the parallel Z-axis and the W-axis, has a machining stroke in the vertical direction that is smaller than that of a 5-plane machining machine controlled by the X-axis, Y-axis, and Z-axis. There are two Z / W axes, the processing range is wide, and a single processing machine can continuously process small to large workpieces, and has high productivity and high mechanical added value. However, it is difficult to use the Z-axis and the W-axis, which are parallel axes, in the machining programs for the upper surface and the four side surfaces. There was no automatic programming system or NC function for the operator, and considerable skill was required of the operator.

The above-mentioned conventional method of moving in the vertical direction is as follows.
The use of the Z axis and the W axis, the interference between the cross rail 68, which is a moving member in the W axis direction, and the work 61, and the Z / W
The operator determines how to drive the quill 66 for moving the Z-axis and the cross rail 68 for moving the W-axis while considering the remaining strokes of the two axes. Is insufficient, the above-mentioned various driving conditions are not sufficiently considered, and the cross rail 68 and the work 61 interfere with each other to damage the work 61 and the blade, and the stroke of the Z-axis + W-axis of the 4-axis control. For example, it was not possible to perform processing in a wide processing range by making full use of the above, and it was not possible to sufficiently exert the added value of the four-axis control processing machine. As described above, conventionally, in order to fully utilize the superiority of the four-axis control (the stroke of the Z axis + W axis), the operator has been required to have considerable skill.

The present invention solves the above-mentioned conventional problems, and can suppress breakage of a work or the like due to a programming error irrespective of an operator's programming skill.
It is an object of the present invention to provide a multi-surface processing machine and a multi-surface processing method that can fully utilize the superiority of four-axis control (Z-axis + W-axis stroke).

[0011]

SUMMARY OF THE INVENTION A multi-face processing machine according to the present invention comprises:
In a multi-surface processing machine that processes each surface of a workpiece using at least parallel two-axis control, a conversion control unit that outputs conversion data of at least parallel two-axis control in accordance with a driving condition in each axis direction on a processing program; And a numerical controller for performing numerical control to process each surface of the workpiece according to the conversion data. Further, specifically, the multi-surface processing machine of the present invention controls each surface of the workpiece by four-axis control of an X axis, a Y axis, and a Z axis of a rectangular coordinate system, and a W axis parallel to the Z axis. In a multi-surface processing machine for processing, a conversion control unit that outputs conversion data of at least two parallel Z-axis and W-axis controls in accordance with driving conditions in each axis direction on a processing program, and a processing target in accordance with the conversion data. A numerical control unit for performing numerical control for processing each surface of the object. Further, as the multi-surface machining method of the present invention, the input machining program is converted into at least parallel two-axis control data in accordance with the driving conditions in each axis direction on the machining program, and then input to the numerical control unit. Numerical control is performed to process each surface of the workpiece through the interface.

With this configuration, at least the conversion data of the parallel two-axis control according to the driving condition in each axis direction on the machining program, which is considered by the skilled operator, is output to the numerical control unit. A machining program can be easily assembled without considering the driving conditions in each axis direction on the program. Z axis of axis control +
The processing range is wide with the stroke of the W-axis, and a single processing machine can continuously process small to large workpieces, increasing productivity and fully utilizing the superiority of 4-axis control.

Preferably, the driving conditions in the multi-surface processing machine and the multi-surface processing method of the present invention include a condition for converting an absolute coordinate system represented by upper surface processing coordinates into a machine coordinate system for numerical control, A condition in which any one of the axes is preferentially driven, a condition in which the workpiece interferes with the processing machine component member and the cutting tool, and a cutting feed in two parallel axes so that the cutting feed speed is a predetermined speed. At least one of the conditions for assigning the speed.

According to this configuration, if the absolute coordinate system represented by the upper surface processing coordinates is converted into a machine coordinate system for numerical control, the operator can always image only the upper surface even if it has four sides and program the image. It suffices to input the information, and it is possible to prevent the work and the like from being damaged due to a program error irrespective of the program skill of the operator.

If any one of the two parallel Z / W axes, for example, the Z axis is driven prior to the W axis, interference between the workpiece and the cross rail as the W axis does not occur. In addition, the work and the processing machine are prevented from being damaged.

Further, if each surface of the workpiece is machined in accordance with the interference condition between the workpiece and the machine component, the machine component such as the cross rail descends below the work height. Can be prevented, and interference between the workpiece and a processing machine component such as a cross rail can be prevented.

Further, when the two parallel axes are driven simultaneously, each surface of the workpiece is machined according to a speed condition in which the cutting feed speed is assigned to the parallel two axes so that the cutting feed speed becomes a predetermined speed. There is a need.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a multi-face processing machine according to the present invention.

(Embodiment 1) FIG. 1 shows Embodiment 1 of the present invention.
1 is a perspective view showing a configuration of a five-sided processing machine in FIG.

In FIG. 1, a table 1 capable of holding a work as a workpiece is disposed longitudinally forward and backward, and this table 1 is configured to be movable in the X-axis direction (horizontal longitudinal direction). ing. Further, ball screws (not shown) are respectively provided upright on both sides of the table 1, and a beam member 2 is hung over the upper end of each ball screw (not shown) to form a gate-shaped portion. Is composed. A servo motor (not shown) as a drive source is disposed in the beam member 2 and synchronizes both left and right ball screw portions (not shown) via bevel gears (not shown). It is configured to be driven to rotate. Both side portions of the cross rail 3 are respectively threaded around these two ball screw portions (not shown), and are hung over them. The W-axis direction (vertical direction) is along the two ball screw portions (not shown). It is configured to be freely movable. A bellows-shaped garment member 4 that covers a ball screw portion (not shown) is disposed between the beam member 2 and the cross rail 3. Similarly, between the cross rail 4 and the lower end of the ball screw portion (not shown), a bellows-shaped clothing member 5 that covers the ball screw portion (not shown) is provided.

An L-shaped inner surface of a vertically long head member 6 is mounted on the upper surface of the cross rail 3, and the head member 6 is moved in the longitudinal direction of the cross rail 3 using the L-shaped inner surface as a guide. Along the Y-axis direction (left-right direction). A quill 7 is disposed at the lower end of the head member 6 so as to move back and forth in the Z-axis direction (vertical direction). At the lower end of the quill 7, an attachment member 8 for side processing is mounted.
At one end of the attachment member 8, for example, a diameter of 50 m
Tools such as a drill with a length of m can be mounted in the horizontal direction.
The tools such as a drill are configured such that the rotational driving force from the head member 6 is bent at a right angle and transmitted via a bevel gear (not shown) in the attachment member 8.

Further, a drive mechanism for four-axis control using the table 1, the cross rail 3, the head member 6, and the quill 7 can be constituted by, for example, a servo motor and a ball screw. A control box 9 for driving and controlling each of these servomotors in accordance with an input program by an operator is provided near the table 1. On the front side of the control box 9, there are provided an input unit 10 composed of an input button group for controlling component processing and a display unit 11 for displaying the processing and alarm contents.

Further, an automatic tool change system (ATC:
The auto tool changer 12 is a system in which various cutting tools are accommodated in a magazine 13 in a rotary manner, and the cutting tools are automatically changed by an exchange hand 14.

FIG. 2 is a block diagram showing the control configuration of the five-sided machining machine shown in FIG. 2, as a hardware configuration of the control unit 21, a CPU (Central Processing Unit) for executing various controls, a control program, various data, and the like are input, and a processing program according to the processing content is input. Possible memory devices (ROM, RAM, etc.)
And various circuits such as a motor drive control circuit. The workpiece is processed by four-axis control of an X-axis, a Y-axis, and a Z-axis in a rectangular coordinate system and a W-axis parallel to the Z-axis. It is configured to control the processing of each surface of the work. The function block of the control unit 21 includes the input unit 1
Various commands such as a program command and a drive command are input from 0, and the four-axis control five-side machining machine checks each drive condition on a machining program and performs Z / W axis one-axis command two-axis control. A control unit 22; a numerical control unit 23 that performs numerical control to perform various types of processing on each surface of the workpiece in response to a command based on the conversion data from the conversion control unit 22; Motor Mx, M
and a motor drive control unit 24 that drives and controls y, Mz, Mw, Mt, and the like. The servo motor Mx is a drive source for moving the table 1 in the X-axis direction, the servo motor My is a drive source for moving the head member 6 in the Y-axis direction, and the servo motor Mz is a drive source for moving the quill 7 in the Z-axis direction. The servo motor Mw is a drive source that moves the cross rail 3 together with the head member 6 and the quill 7 in the W-axis direction (a direction parallel to the Z-axis direction). The motor Mt is a drive source that rotationally drives a tool such as a drill to cut a work.

Here, the machine coordinate system 31 shown in FIG. 3 is a coordinate system in the direction of the four driving axes in the actual four-axis five-face machining machine, and is used when the work 32 is placed on the table 1. X-axis, Y-axis, and Z-axis of orthogonal coordinates, and W-axis parallel to the Z-axis, and is a coordinate system corresponding to all of the upper surface and the four side surfaces of five-surface machining. . However, for example, when drilling, the drilling direction is X-axis,
There are four directions of the Y-axis, Z-axis and W-axis, which cause a program error. On the other hand, the absolute coordinate system (coordinate system based on the origin) adopted in the present invention
33, as shown in FIG. 3, all axes perpendicular to the processing surface are set to the z-axis, and when each surface is developed, each side surface also has the same orthogonal coordinates as the x-axis, y-axis, and z-axis with respect to the upper surface. Is a coordinate system. In other words, the conversion control unit 22 also has a coordinate conversion control function for converting the absolute coordinate system 33 represented by the upper surface processing coordinates of the work 32 into the mechanical coordinate system 31 for numerical control. In this example, the Z / W two-axis command is represented by Zz, and the Z / W two-axis command is represented by Yy in each side surface processing by the attachment member 8.

Thus, as shown in FIG. 3, the five-side processing machine according to the first embodiment sets the axis direction perpendicular to the processing surface to the z-axis among the three axes x, y, and z of the rectangular coordinate system. The z-axis direction and the up-down direction (Z / W-axis direction) of only the upper surface coincide with each other, and the z-axis direction (up-down direction) corresponds to the sum of the strokes of the Z-axis and the W-axis. ), And the four sides have the y-axis direction and the up-down direction (Z / W-axis direction) coincide with each other, and the y-axis direction (up-down direction) corresponds to the sum of the strokes of the Z-axis and the W-axis. ). Thus, a state where the upper surface and each of the four side surfaces are developed in a planar shape,
That is, a program can be input to each of the four side surfaces in the same rectangular coordinates as in the case of the upper surface. Therefore, when performing various types of processing, the operator can form a program in the same manner as the upper surface processing even in the case of side processing, thereby suppressing program errors, and suppressing damage to the work and each member due to the program errors. Become.

The conversion control unit 22 checks the drive conditions in the four-axis direction on the machining program provided by the four-axis control five-face machining machine, and performs Z / W axis one-axis command two-axis control. For example, the following driving conditions (1) to (3) can be considered as the axial driving conditions on the machining program.

Axial drive condition (1): As the priority of Z / W axis movement with respect to the NC command, for example, the Z axis is given priority over the W axis. This is because if the work interferes with the cross rail 3 which is the W axis, not only the work but also the processing machine will be damaged. Therefore, it is necessary to give priority to the Z axis over the W axis.

Axial driving condition (2): The interference between the work and the cross rail 3 which is the W axis is caused, for example, when the cross rail 3 falls below the height of the work.
Interfere with each other, and damage the work and the cross rail 3.

Axial drive condition (3): If the remaining stroke of the Z / W axis in response to the NC command is not enough for the distance to be moved, the machining program will not move even if it attempts to move the axis. In addition, there is a possibility that wrong processing is performed. In this case, first, the remaining stroke amount of the Z-axis may be moved first, and then the insufficient W-axis may be moved. The axes may be moved simultaneously.

The operation of the above configuration will be described below in accordance with each machining program.

First, as shown in FIG. 4, the case where the upper hole 41 is drilled in the right side surface 32a of the work 32 and then the lower hole 42 is drilled (upper and lower two hole processing). According to the machining program of the present invention, it can be assembled as follows.

That is, the machining program before conversion input by the operator is, for example,

[0034]

(Equation 1)

## EQU1 ##

In this machining program (P1), the right side of the work having a height of 600.0 mm is machined. The work, that is, the interference, is shown at a position 600.0 mm above the table upper surface. The height of the interference between the rail 3 and the work is shown. That is, G156 indicates the absolute coordinate system 33 of the right side surface 32a of the work 32, and w600.0 indicates the work height of 600.0 mm. G154 is the coordinate system of the upper surface, G155 is the coordinate system of the rear surface, G157 is the coordinate system of the front surface, and G158 is the coordinate system of the left surface.

The machining program (P2) shows an operation of returning the tool tip to the origin positions x0 and y0 of the absolute coordinate system 33 by rapid traverse. That is, G90 is the absolute coordinate system 3
3 is a coordinate system for performing machining at a distance from the set origin positions x0 and y0. Fast forward with G00 (Machine m
ax speed), x0 and y0 are origin positions, and S600 is a cutting rotation speed (spindle rotation speed) of 600 rpm.

Further, in the machining program (P3), z50.0 indicates the drill approach height, and M03 indicates the rotation.

Further, in the machining program (P4), G81 indicates a fixed cycle of drilling, G98 indicates an operation of returning to the original position after two upper and lower holes, and z-50.
0 is the drilling depth of 50.0 mm, R5.0 is the cutting edge stop position before cutting, the distance to the workpiece is 5.0 mm in the drilling direction, and F300 is the cutting speed of the drill 43 is reduced. 300 mm, L0 is the next machining program (P
5, P6).

Further, the machining programs (P5, P6) indicate the vertical positions of the drilling. That is, x
0 y-50.0 is a position 50.0 mm downward from the origin position x0, y0 on the y-axis, and x0 y-550.0
Is 550.0 m below the y-axis from the origin position x0, y0
m. At this time, the pitch dimension is 500 mm on the right side surface 32 a of the work 32 having a height of 600 mm.
Thus, two holes 41 and 42 having a diameter of 50 mm distributed at the center are drilled.

Further, the machining program (P7) indicates the end of drilling, G80 is a cancel command of the above-mentioned machining programs (P1) to (P6), and M05 is a rotation stop command.

The above machining programs (P1) to (P7)
Are respectively converted by the conversion control unit 22 during the previous driving, and the following machining programs (P1a) to (P1a)
7a) is output to the numerical controller 23. Numerical control unit 23
Are based on the machining programs (P1a) to (P7a) which are commands from the conversion control unit 22.
4 controls the driving of the servo motors Mx, My, Mz, Mw, Mt, and the like.

The converted machining program (P1
a) to (P7a) are machining programs when a drive command is issued to each axis of an actual machining machine.

[0044]

(Equation 2)

Is as follows.

These processing programs (P1a) to (P1a)
Conventionally, 7a) was input by a program by an operator. However, since the conversion control unit 22 is used, the program input of the machining programs (P1) to (P7) before the conversion is sufficient.

That is, the machining programs (P1) to (P7) before conversion, which are input by the operator, are assembled by three axes of the absolute coordinate system 33 represented by the upper surface machining coordinates, namely, the x-axis, the y-axis, and the z-axis. In contrast, the conversion control unit 22
Machining programs (P1a) through (P7)
a) is an x-axis of a machine coordinate system 31 for driving each axis of the processing machine;
There are four axes, y-axis, z-axis and w-axis. In addition, the machining programs (P1) to (P7) before conversion, which are input by the operator, are used separately for the Z / W axis.
Although the input is performed without considering the interference between the workpiece 32 and the processing machine and the driving conditions in the processing program such as the remaining stroke of the Z / W axis, the conversion via the conversion control unit 22 is performed. Subsequent machining programs (P1a) to (P7a)
Is a Z / W-axis 1-axis command 2-axis control that takes into account the driving conditions on the above-mentioned machining program that the 4-axis control 5-plane machining machine has.

(Embodiment 2) In Embodiment 2, the conversion control unit 22a in FIG. 2 is a Z / W axis 1-axis command 2-axis control, but is a case of two-axis simultaneous drive. Figure 1 of
The configuration is the same as that of FIG. 2, but requires the following axial driving condition (4) in addition to the axial driving condition (1).

Axial driving condition (4): When simultaneously driving two axes, for example, simultaneously driving two orthogonal X and Y axes, the cutting edge of a drill or the like moves on a diagonal line thereof. The cutting speed is determined according to the material in the program. In this case, the cutting speed is increased by about 1.41 times, ie, √2 times. Function of automatically assigning the cutting feed speed to two axes so as to reach a predetermined speed (1/1.
(A function to convert to about 41 times). Therefore, the numerical controller 23 assigns the cutting feed speed to the Z / W2 axis even in the case of the two parallel axes of the Z axis and the W axis, as in the case of the two orthogonal axes of the X axis and the Y axis. Therefore, when the parallel Z / W axes are driven simultaneously, the moving speeds of the Z axis and the W axis are set to 1 / √2 of 1 / √2 in advance.
It is necessary to convert to about 1.41 times and return to the original appropriate cutting feed rate.

FIG. 5 shows a case where the machined surface FAC of the protruding portion of the right side surface 51a of the work 51 is surface-cut by a milling cutter 52 as a surface cutting tool having a diameter of 200 mm. The surface cutting is performed by cutting and feeding from point A to point B while rotating the milling cutter 52 in FIG. 5, but the remaining stroke of the Z axis is only 200 mm. On the other hand, the vertical movement distance of the milling cutter 52 from the point A to the point B is 740 mm, and the stroke is insufficient with only the remaining stroke of 200 mm on the Z axis. In this case, a Z-axis movement stroke of 200 mm and a W-axis movement stroke of 540 mm are separately output simultaneously. Also in this case, the movement is preferentially performed so that the remaining stroke 200 mm of the Z axis is consumed. At this time, the command input by the operator as a program is only the y-axis 1 of the absolute coordinate system 33.
Axis command.

With respect to the right side surface 51a of the work 51,
In the case of performing milling (face milling), the machining program of the present invention can be assembled as follows.

That is, the machining program before conversion input by the operator is, for example,

[0053]

(Equation 3)

Is as follows.

In this machining program (P11),
This is a case where the right side surface with a work height of 820.0 mm is milled. This indicates that there is a work, that is, an interference object, at a position of 820.0 mm above the upper surface of the table, and the cross rail 3 is lowered below the height position. This indicates that the work and the cross rail 3 interfere with each other.

Further, in the machining program (P12), the operation of positioning the tip of the milling cutter 52 to the machining origin position x0, y0 of the absolute coordinate system 33 by rapid traverse;
3 shows an instruction for the number of revolutions of the main shaft.

Further, in the machining program (P13), 100.0 upwards from the tip of the milling cutter 52.
A case is shown where positioning is performed at a rapid feed to a cutting start point (center position A of the milling cutter 52) that has been raised by mm.

Further, a case is shown in which the positioning is performed by rapid traverse in the cutting direction in the machining program (P14).

Further, in the machining program (P15),
A case where the cutting feed is performed at a cutting feed speed of 500 mm / min to a cutting end point B is shown. At this time, cutting feed is performed by simultaneous driving of two Z / W axes.

Further, M0 of the machining program (P16)
5 is a rotation stop command.

The above machining programs (P11) to (P1)
6) are converted by the conversion control unit 22a during the previous driving, respectively, and the machining program (P11
a) to (P16a) are output to the numerical controller 23. The numerical control unit 23 controls the servo motors Mx, My, Mz, M by the motor drive control unit 24 based on the machining programs (P11a) to (P16a) which are commands from the conversion control unit 22a.
Drive control of w, Mt, etc.

These converted machining programs (P11
a) to (P16a) are machining programs when a drive command is issued to each axis of an actual machining machine.

[0063]

(Equation 4)

Is obtained.

These machining programs (P11a) to
Conventionally, (P16a) was input by the operator as a program, but since the conversion is performed via the conversion control unit 22, the program input of the machining programs (P11) to (P16) before the conversion is sufficient.

That is, the machining programs (P11) to (P16) before conversion, which are inputted by the operator, are assembled by three axes of the absolute coordinate system 33 represented by the upper surface machining coordinates, that is, the x-axis, the y-axis, and the z-axis. In contrast, the machining program (P11a) after conversion via the conversion control unit 22a
(P16a) is a machine coordinate system 31 for driving each axis of the processing machine.
, X-axis, y-axis, z-axis and w-axis. The machining programs (P11) to (P16) before conversion, which are input by the operator, are priorities of the Z / W axis, interference between the workpiece 51 and the processing machine, and Z / W axes.
Although the input is performed without considering the driving conditions in the machining program such as the remaining stroke of the W-axis, the machining program after conversion via the conversion control unit 22a (P11
a) to (P16a) are Z / Z values in consideration of the driving conditions on the machining program that the four-axis control five-face machining machine has.
Two-axis control is performed by a W-axis one-axis command.

Here, the processing program (P15a) is converted by the conversion control section 22a and the processing program (P15a) is converted.
In this block, cutting feed is performed under the two-axis control of the Z-axis and the W-axis. Z-axis movement amount 200 mm = Z100.0 to Z-100.0 (G90) W-axis movement amount 540 mm = W0 to W0 W-540.0 (G90).

In this case, it is necessary to distribute the axial movement on the Z / W axis and also to convert the cutting feed speed F500.

(Before conversion) F500 = 740f (after conversion) / √ (200 ² +540 ² ) (after conversion) f = 389.086

The reason is that in the numerical controller 23,
In the case of two-axis simultaneous drive, since the cutting feed speed is all calculated in the orthogonal coordinate system, if commanded by F500, the actual feed speed of the facing tool (knife) moves fast at 642 mm / min. is there.

That is, 500 × (200 + 540) / √
(200 ² +540 ² ) = 642 As described above, when the cutting movement speed is distributed along the Z / W axis, the F speed of the program command is converted, and the appropriate F speed to be commanded by the actual facing tool (knife) is to be programmed. This is for moving at a speed.

According to the first and second embodiments, the machining program to which the new function is added is provided with a numerical value in each axis direction of the machine through the five-plane machining software of Z / W axis 1 axis command 2 axis control. By being converted into the four axes of control, the operator only needs to input the five-surface machining program of the upper surface and the four side surfaces in three axes of the x-axis, the y-axis, and the z-axis, and in the absolute coordinate system 33. The machining program input by the operator can eliminate the thinking of the highly skilled operator (for example, proper use of the Z / W axis, interference between members, etc.). Can be assembled, the simplicity of the machining center can be obtained, and even when the skill as an operator is low, a machining program can be easily assembled with fewer mistakes. At the same time, it is possible to make full use of the vertical and long machining strokes of the Z-axis and the W-axis of the 4-axis control of the 4-axis control 5-sided machining machine, so that the machining range is larger and the original mechanical added value is provided. Can be fully exhibited.

In the first and second embodiments, the driving conditions in each axis direction on the machining program include a condition for converting from an absolute coordinate system represented by upper surface machining coordinates to a machine coordinate system for numerical control, and Z Although the description has been given by giving conditions that prioritize the axis over the W axis, interference conditions between the workpiece and the processing machine component, and conditions for allocating the cutting feed speed to two parallel axes so that the cutting feed speed becomes a predetermined speed. The present invention is not limited to this,
In short, it is sufficient that the driving condition is considered by a skilled operator from experience.

[0074]

As described above, according to the present invention, a one-axis command can be used in accordance with the driving conditions for each axis in the machining program.
Since the axis control can be performed, a machining program can be easily assembled in the same format as that of the three-axis control despite the four-axis control regardless of the skill of the operator.

Further, even in the case of small-lot production of other products, continuous machining can be performed by utilizing a long machining stroke in the vertical direction of the Z axis + W axis of the 4-axis control, and the machining efficiency can be improved. .

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a five-sided processing machine according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a control configuration of the five-side processing machine of FIG. 1;

FIG. 3 is a work perspective view showing an absolute coordinate system represented by upper surface processing coordinates and a machine coordinate system for numerical control.

FIG. 4 is a front view showing a state of drilling by the five-sided processing machine of FIG. 1;

FIG. 5 is a front view showing a state of milling by a five-sided processing machine according to a second embodiment of the present invention.

FIG. 6 is a front view showing a state of drilling by a conventional five-sided processing machine.

[Explanation of symbols]

 Reference Signs List 1 Table 3 Cross rail 6 Head member 7 Quill 8 Attachment member 9 Control box 10 Input unit 11 Display unit 21 Control unit 22, 22a Conversion control unit 23 Numerical control unit 24 Motor drive control unit 31 Machine coordinate system 32, 51 Work 32a, 51a Right side surface 33 Absolute coordinate system 41, 42 Hole 43 Drill 52 Milling cutter Mx, My, Mz, Mw, Mt Servo motor

Claims (5)

[Claims] 1. A multi-surface processing machine for processing each surface of a workpiece using at least parallel two-axis control, wherein at least parallel two-axis control conversion data is output according to a driving condition in each axis direction on a processing program. And a numerical control unit for performing numerical control for processing each surface of the workpiece in accordance with the conversion data. 2. An X-axis, a Y-axis and a Z-axis of a rectangular coordinate system,
In a multi-surface processing machine for processing each surface of a workpiece by four-axis control with a W-axis parallel to the Z-axis, at least two parallel Z-axes and a W-axis according to driving conditions in each axis direction on a processing program. A multi-surface processing machine comprising: a conversion control unit that outputs conversion data for axis control; and a numerical control unit that performs numerical control for processing each surface of the workpiece in accordance with the conversion data. 3. The driving condition includes a condition for converting from an absolute coordinate system represented by upper surface processing coordinates to a machine coordinate system for numerical control, and driving with priority given to one of two parallel axes. Conditions, a condition in which the workpiece and a component of the processing machine interfere with each other, and a parallel 2 so that the cutting feed speed is a predetermined speed.
3. The multi-face processing machine according to claim 1, wherein at least one of a condition for assigning a cutting feed speed to the shaft is satisfied. 4. An input machining program is converted into at least parallel two-axis control data in accordance with driving conditions in each axis direction on the machining program, and then input to a numerical controller, and the workpiece is processed through the numerical controller. A multi-face machining method characterized by numerically controlling each face to be machined. 5. A condition for converting from an absolute coordinate system represented by upper surface processing coordinates to a machine coordinate system for numerical control, and a condition for driving with priority given to any one of two parallel axes. And at least one of a condition in which the workpiece and a processing machine component interfere with each other and a condition in which a cutting feed speed is allocated to two parallel axes so that the cutting feed speed is a predetermined speed. The multi-face machining method according to claim 4, wherein: