JPH0691485A - Signal transmitting device of penta-surface finishing machine - Google Patents

Abstract

PURPOSE:To provide a device to transmit a signal from a rotary head to a control device at the main body side in a multisurface processing machine. CONSTITUTION:This penta-surface processing machine has a rotary head 19 which can be installed rotatable to a head holder 10 through a rotary shaft 12, and a main shaft spindle 22 is installed to the rotary head 19. A ring-form transmitter 200 is installed to the periphery of the rotary shaft 12, and it transmits a signal to a receiver 220 provided at the head holder 10 side in the non-contact condition. A touch sensor tool 15 installed to the spindle 22 also has a transmitter 154, and it transmits a signal to a receiver 160 at the rotary head 19 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal transmission device in a five-side processing machine capable of processing an oblique surface of a work.

[0002]

2. Description of the Related Art A five-axis control machine for machining five faces including a slant face of a work is provided in Japanese Patent Application No. Hei. It has already been proposed by the present applicant as 181522.

[0003]

In this processing machine, the head having the main spindle attached thereto revolves around a revolving axis tilted with respect to the machine coordinates with respect to the head supporting member. The main spindle has an orient mechanism for stopping the spindle at a fixed position during boring or tapping, and it is necessary to provide a line for transmitting a signal from the orient mechanism to the main body side. When the head turns, this line wraps around the turning axis. Therefore, it may be necessary to perform a process for preventing excessive wrapping of this line, and this effect sometimes limits the turning angle of the turning shaft. Further, when the touch sensor tool is mounted on the spindle, it is necessary to provide a line for transmitting the touch sensor signal to the main body side. Also in this case,
Similar to the above, processing of the signal line becomes a problem. The present invention provides a device capable of smoothly transmitting a signal even when a head turns.

[0004]

A five-face processing machine embodying the present invention includes a frame, a column and a table that move along two axes that are orthogonal to each other in a horizontal plane on the frame, and in a direction perpendicular to the column. A moving head support member; a swivel head supported by the head support member so as to swivel about a first swivel axis having an angle of 45 degrees with respect to a horizontal plane;
Main spindle arranged on a fifth axis having an angle of 45 degrees with respect to the main axis of rotation, means for restricting the rotation stop position of the main spindle, and a second rotary in a direction perpendicular to the table surface. And means for turning the table around the axis, and capable of processing the upper surface and the side surface of the workpiece mounted on the table. A ring-shaped transmitter provided on the outer peripheral portion of the turning shaft of the turning head and a receiver provided on the head support member that receives signals from the ring-shaped transmitter in a non-contact manner are provided.

[0005]

By providing the above means, it is possible to smoothly transmit the signal from the spindle spindle provided in the swivel head or the signal from the touch sensor tool mounted on the spindle spindle to the main body side.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A five-sided machine 1 embodying the present invention has a bed 2 as shown in FIG. 1, and a front portion of the bed 2 in the figure has a linear motion guide bearing or the like as guide means. Of the plurality of guide rails 3A, which are the left and right directions in the drawing, are indicated by arrows A and B.
It is provided parallel to the direction (that is, the X-axis direction). A work supporting device 26 is provided on these guide rails 3A, and the work supporting device 26 has a base 5 and the like. The base 5 is provided with a plurality of nuts 3b, an X-axis drive motor 65 (not shown), a ball screw, and arrows A and B.
A table 35 formed in a substantially square shape is provided on the base 5 so as to be movable in the direction (X-axis direction). The table 35 is rotatable about the rotation center CT1 in the directions of arrows P and Q. It is provided in the shape. A work mounting surface 35a for mounting a work is formed on the upper portion of the table 35 in the drawing. In addition, a tool stocker 41 that stores various kinds of tools 31 is provided on the rear side of the bed 2 in the figure, and a plurality of tools 31 can be selectively attached to and detached from the tool stocker 41 in a groove-like groove formed by a magazine 42. It is provided so that. The magazine 42 is provided with a tool transport chain 42a composed of a conveyor or the like so as to be movable along the groove, and the tool transport chain 42a has a hole-shaped tool accommodating portion 42b in which the tool 31 can be detachably attached. It is provided in.

Further, in the center of the bed 2, there is provided a guide rail 3C composed of a plurality of linear guide bearings which are guide means.
Are provided in parallel with the directions of arrows C and D (that is, the Z-axis direction) which is a direction perpendicular to the directions of arrows A and B, and the column 6 is provided on the guide rail 3C with a Y-axis drive motor (not shown). It is provided so as to be movable in the directions of arrows C and D (Z-axis direction) via a ball screw 66.

On the side surface 6b of the column 6 (the surface parallel to the directions of the arrows C and D), the tool changer 49 is configured to freely drive the shifter swivel portion 49a around the swivel center SA2 in the directions of the arrow R2 and S2. A tool changer 49 is provided
Has a tool gripping device 45 including an arm 46 and the like. The arm 46 has an arrow R centered around the turning center SA1.
It is provided so that it can be swivel-driven in the S1 and S1 directions.

Further, on the front surface 6a of the column 6, a guide rail 3B composed of a plurality of linear guide bearings or the like, which is a guide means, is arranged in the arrow E and F directions (that is, the Y-axis direction) which are vertical directions in the drawing. The headstocks 9 are provided in parallel with each other, and the headstock 9 is provided on the guide rails 3B so as to be movable in the directions of arrows E and F (Y-axis direction) via a Z-axis drive motor 67 (not shown) and a ball screw. ing. The headstock 9 has a head support 10 and a swivel head 19 and the like. The head support 10 has a swivel drive mechanism 17 through which the swivel head 19 is formed with respect to a horizontal plane formed by the Z axis and the X axis. The predetermined angle 45
It is provided in such a manner that it can be swivel-driven in the directions of arrows G and H around a rotation center CT3 provided in a tilted manner.

The head supporting portion 10 is, as shown in FIG.
The main body 11 includes a drive shaft 12, a turning drive mechanism 17, and the like. The main body 11 includes the front surface 6 of the column 6 shown in FIG.
It is provided at a in such a manner that it can be moved and driven in the directions of arrows E and F (that is, the Y-axis direction), which is the vertical direction in the figure, via a guide rail 3B that is a guide means. The main body 11 is shown in FIG.
As shown in, the engagement holes are in the directions of arrows C and D (Z-axis direction).
With respect to a predetermined angle α (α = 45 ° in this embodiment)
The stepped rod-shaped swivel shaft 12 has its axial center (hereinafter, referred to as swivel center CT3) in the engagement hole via the bearing 13 and the like in the engaging hole. Inclined by a predetermined angle α with respect to the C and D directions (Z-axis direction),
In addition, it is provided so as to be rotatable in the directions of arrows G and H around the center of rotation CT3.

As shown in FIG. 2, an engaging hole is formed in the turning shaft 12 so as to engage the turning shaft 12 along the turning center CT3. A turning drive mechanism 17 is connected to the turning shaft 12. The swing drive mechanism 17 includes the main body 1
The servo motor 40 supported on the first side is provided, and the gear 41 attached to the output shaft of the servo motor 40 meshes with the gear 42 of the turning shaft 12. Therefore, the servo motor 40
The swivel shaft 12 swivels by a predetermined angle in the G and H directions about the axis CT3 in accordance with the rotation angle of. A casing 20 is attached to the tip of the swivel shaft 12, and constitutes a swivel head 19. In the casing of the swivel head 19, a main spindle 22 is provided with a bearing 23 and an axis C.
It is supported rotatably in the J and K directions about T5.

The head support portion 10 supports a servo motor 25 for driving the spindle. The output shaft 26 of the servomotor 25 drives an intermediate shaft 27 rotatably supported in the casing 20 of the turning head 19 via a bevel gear 26a. The intermediate shaft 27 also drives a gear 28 integral with the spindle 22. With this configuration, the spindle 22 is rotationally driven. A taper-shaped tool holding surface 22a for attaching the shank of the tool 31 is formed at the tip of the spindle. The rotation stop position (orientation position) of the spindle 22 is always constant, and the information is, for example, the origin dock provided at one point on the circumference of the gear 28 and the proximity sensor 8.
0 and the ring-shaped transmitter 200 attached to the outer peripheral portion of the swivel shaft 12 in the head support 10, and the receiver 220 provided on the casing side of the head support member 10 facing the transmitter 200. , Is transmitted to the NC side of this machine. A draw bar 29 is arranged in the spindle 22 to hold the tool. The main body 11 side of the head support portion 10 is equipped with a press device 100 that presses the draw bar 29 of the spindle 22 to remove the tool when the automatic tool is changed.

By the way, as shown in FIG. 1, a machining control device 50 is mounted on the five-face machining machine 1, and the machining control device 50 has a main control section 51 as shown in FIG. ing. An input unit 53 such as a keyboard, a system program memory 54, a machining program memory 55 in which a measurement pattern program and the like are stored, a machining control unit 56, an axis control unit 57, and various tools in the main control unit 51 via a bus line 52. Buffer memory 58 for inputting data, program coordinate conversion analysis control unit 60, printer 61, CRT display unit 17
7. Measurement data analysis / calculation unit 62, measurement unit 63, touch sensor tool 150 connected to the measurement unit, and the like are connected. The program coordinate conversion analysis control unit 60 calculates the amount of turning of the head 19 and the table 35 according to the inclination of the processing surface when processing the processing surface of the workpiece, and controls the calculation result. It is provided so as to be output to the unit 56. Further, the axis control unit 57 has an X
An axis drive motor 65 is connected to the base 5 so as to move the base 5 in the X-axis direction (arrow A and B directions in FIG. 1).
The shaft drive motor 65 is provided with an encoder 65a in a form of feeding back the rotation angle amount of the X-axis drive motor 65 to the shaft control unit 57. Further, the axis control unit 57 has
A Y-axis drive motor 66 is connected so as to move the headstock 9 in the Y-axis direction (arrow E and F directions in FIG. 1).
The Y-axis drive motor 66 is provided with an encoder 66a in a form of feeding back the rotation angle amount of the Y-axis drive motor 66 to the axis control unit 57. Further, a Z-axis drive motor 67 is connected to the axis control unit 57 so as to move and drive the column 6 in the Z-axis direction (arrow C and D directions in FIG. 1). , The encoder 67a is the Z
The rotation angle amount of the shaft drive motor 67 is provided as feedback to the shaft control unit 57.

Further, in the axis control unit 57, the α-axis drive motor 40 moves the turning head 19 in the α-axis direction (arrow G in FIG. 1,
The encoder 68a is provided in the α-axis drive motor 40 so as to feed back the rotation angle amount of the α-axis drive motor 40 to the axis control unit 57. Further, a B-axis drive motor 69 (not shown) is connected to the axis control unit 57 so as to move and drive the table 35 in the B-axis direction (arrow P and Q directions in FIG. 1). Is provided with an encoder 69a in a form of feeding back the rotation angle amount of the B-axis drive motor 69 to the axis control unit 57.

Since the five-face processing machine 1 according to the present invention has the above-described structure, first, in order to machine a work using the processing machine 1 shown in FIG.
It is mounted on the work mounting surface 35a. Next, a tool such as an end mill used for processing is mounted on the spindle 22 via the tool holding surface 22a and the like. Then, in order to define the positional relationship of the machining surface (work coordinate) of the workpiece with respect to the machining machine 1 (machine coordinate), the reference condition BCT of the workpiece to be machined is input via the input unit 53 shown in FIG. Then, the surface definition condition PDT is input and stored in the machining program memory 55. The reference condition BCT is composed of reference coordinates BCO for associating the positional relationship between the coordinate system of the entire work to be machined and the machine coordinate system of the processing machine 1, and the surface definition condition PDT is the reference coordinate BCT.
In the coordinate system defined by CO, the surface definition coordinates PCO defining the work coordinates of each machining surface to be machined
Consists of.

First, as shown in FIG. 5, X, Y, and Z coordinates (arrows A and B directions, arrow E, and arrow E in FIG. 1) which are mechanical coordinate systems.
An absolute point of the processing machine 1 in the F direction and the arrows C and D directions) is set as a machine origin MO. Then, the reference origin BP of the reference coordinates BCO is set at one point of the work 30 as shown in FIG. 4, and the reference origin BP is set to the X, Y, Z coordinate system X,
A reference origin BP and a coordinate system based on the reference origin BP are defined by the Y and Z components. That is, in the example of FIG. 4, the reference origin BP has the X component X0, the Y component Y0, and the Z component Z0.
It is 0. The coordinate axes WX, WY, WZ of the coordinate system having the reference coordinate BCO as the origin are the axes having the angle MB around the Y axis with respect to the X axis in the plane parallel to the XZ plane,
An axis that is perpendicular to the XZ plane and is orthogonal to the WX axis and passes through the reference origin BP is a WY axis, and an axis that is orthogonal to the WX axis in a plane parallel to the XZ plane and is an axis that passes through the reference origin BP is a WZ axis. Further, the angle MB is an angle with the clockwise direction being positive with respect to the XY plane, and indicates the rotation angle around the Y axis of the WX-WY plane. Further, the angle MA is an angle that does not consider the code around the X axis with the Y axis as a reference, and indicates the rotation angle of the WX-WY plane with respect to the XY plane. That is, in the example of FIG. 4, WX of the coordinate system
In the -WY plane, the angle component of the angle MB is B0, so X
It rotates in the positive direction by the angle B0 with respect to the -Y plane,
The WX-WY plane is perpendicular to the XY plane and the angle MA is 0 with respect to the XY plane.

As described above, in order to specify the reference coordinates BCO, these components of the reference origin BP are input as the reference coordinates BCO from the input unit 53 shown in FIG. That is, in the reference condition BCT shown in FIG.
In the digit "X" in the middle, "X
"0", "Y0" as the Y component data BD2 for the "Y" digit, "Z0" as the Z component data BD3 for the "Z" digit, and the Y axis rotation for the "MB" digit. "B0" is input as the data BD4 of the angle component of "," and "0" is input as the data BD5 of the angle component around the X axis to the digit of "MA" via the input unit 53 shown in FIG. To store.

Next, when the reference coordinate BCO is designated, the work coordinate of each machining surface of the work with respect to the designated reference coordinate BCO is defined. That is, the surface definition coordinates PCO are, as shown in FIG.
,,, the lower left point of these corners (indicated by the black squares in the drawing) is temporarily set as the work origin W1, W2, W3, W4, W5, W6 of each machining surface. The work origin of each machining surface is defined by the WX, WY, and WZ components of the reference coordinate BCO shown in FIG. Further, the angle WB is an angle whose positive direction is clockwise with respect to the WX axis with respect to the WY axis, and the WX around the WY axis perpendicular to the XZ plane forming the work mounting surface 35a of the table 35 from the surface of each processing surface. Indicates the angle with respect to the axis. Also, the angle W
A is an angle that does not consider the sign around the WX axis with respect to the WY axis, and indicates the angle that each surface of the machining surfaces forms with the XZ plane formed by the work mounting surface 35a of the table 35.

For example, in the example of the work 30 shown in FIG. 5, when the work 30 has a size as shown in FIG. 6B, first, the work origin W1 of the machined surface is
WX component is -150, WY component is 0, WZ component is 0, W
The angle component WB around the WY axis with respect to the X axis is 0, WY
The angle component WA around the WX axis with respect to the axis is 0. Similarly, the workpiece origin W2 of the surface to be machined is 0 for the WX component, 0 for the WY component, -200 for the WZ component, 180 for the angle component WB around the WY axis, and 0 for the angle component WA around the WX axis. is there. Further, the workpiece origin W3 of the machined surface is W
The X component is 0, the WY component is 0, the WZ component is 0, the angle component WB around the WY axis is -90, and the angle component WA around the WX axis is 0. Further, the workpiece origin W4 of the machined surface is W
X component is -150, WY component is 0, WZ component is -20
0, the angle component WB around the WY axis is 90, and the angle component WA around the WX axis is 0. Further, the workpiece origin W5 of the machined surface has a WX component of 0, a WY component of 100, a WZ component of 0, an angle component WB-90 around the WY axis (the upper surface is input as -90 for convenience), a WX axis. The surrounding angle component WA is 90. Furthermore, the workpiece origin W6 of the machined surface is
WX component is 0, WY component is 30, WZ component is -200,
The angle component WB around the WY axis is 180, and the angle component WA around the WX axis is 45.

Thus, the workpiece origin W of these machined surfaces
To specify 1, W2, W3, W4, W5, W6,
The component of the work origin of these machining surfaces is defined by the surface definition unit PD
It is input from the input unit 53 as the surface definition coordinate PCO of U.
That is, in the surface definition condition PDT shown in FIG.
As an example, in the case of a surface, “1” is set as the designated machining surface data PNO in the “face” digit in the surface defining coordinate PCO, and “150” is set as the WX component data PD1 in the “WX” digit. , "0" as the WY component data PD2 for the "WY" digit, "0" for the WZ component data PD3 for the "WZ" digit, and the WY axis rotation for the "WB" digit. "WA" is set as "0" as the angle component data PD4.
“0” is input as the data PD5 of the angular component around the WX axis to the digit of “”, and is input as the surface data string PS1 via the input unit 53 shown in FIG. 3 and stored in the machining program memory 55. After that, the same is input with respect to the machining surfaces 1 to 3 of the work 30, and finally, the surface definition condition PDT shown in FIG. 6B is completed and stored in the machining program memory 55.

Next, the main control section 51 is instructed to start machining through the input section 53 shown in FIG. Then, the main control unit 51 commands the machining control unit 56 to perform machining, and the machining control unit 56 that has received the command reads the machining program from the machining program memory 55 and processes the work 30. . The machining program is loaded with the surface definition condition PDT input from the input unit 53 by the coordinate conversion analysis control unit 60 of the machining control device 50 shown in FIG. 3, and each machining surface of the workpiece 30 to be machined. Surface of to surface definition coordinates PC in the surface definition condition PDT
Depending on the number of surfaces input to O, machining blocks corresponding to the machining instruction planes of the respective machining planes of the work 30 are sequentially formed.
The machining data of the machining planes 1 to 3 are described based on the work origin of each machining plane.

Here, the case of processing the slope of the work 30, which is a characteristic of the present invention, will be described. At this time, for example, as shown in FIG. 4, since the inclined surface of the work 30 is inclined at a predetermined angle with respect to each of the three axes of the X, Y, and Z axes, the tool 31 is adjusted according to the inclination of the surface. It is necessary to incline by a predetermined angle with respect to the X, Y, and Z axes. Therefore, first, when the swivel head 19 shown in FIG. 2 is swung by the arbitrary angle θ in the directions G and H around the swivel center CT3 together with the spindle 22 on which the tool 31 is mounted, the respective degrees θ and the spindle. 22 (hence the tool 31) with respect to the X, Y, Z axes θx, θy, θ
The relationship with z will be described.

That is, as shown in FIG. 8, the symmetry point P1 is the origin O of the X, Y, and Z coordinate axes, and the turning center CT3 (α
Consider a circle with a radius of 1 (hereinafter referred to as a unit circle UC) that is perpendicular to the (axis) and is in contact with the Y axis and the Z axis. The points at which the unit circle UC contacts the Y axis and the Z axis are A and B, respectively. Here, the spindle 22 (that is, the head 19)
Is rotated about the rotation center CT5 in the direction of arrow G by an angle θ from the state of being positioned on the Z axis, and is positioned at the position indicated by the alternate long and short dash line in the figure. Then, the rotation center CT5 of the spindle 22 also turns in the direction of the arrow G by the angle θ,
Move from point B to point D along the circumference of the unit circle UC.
At this time, as shown in FIG. 9, from the point D to the XZ plane and YZ
Let G ₁ and E be the feet of the perpendicular drawn on the plane, and F be the feet of the perpendicular drawn from the foot G ₁ to the Z axis. Θ = ∠BCD, θx = ∠DFG ₁ FG ₁ = DE, DG _{Since 1} = EF = FB, tan θx = DG ₁ / FG ₁ = EF / DE tan θx = EF / DE (Equation 1)

Here, if a perpendicular is drawn from the point D shown in FIG. 8 to the straight line AB and its foot is E, then CD = 1, and therefore DE = CDsinθ = sinθ (Equation 2). In the triangle BEF shown in FIG. 8, FB = EF = EBsin45 ° = (BC-CDcosθ) sin45 ° EF = (1-cosθ) / √2 (Equation 3) Therefore, by substituting (Equation 2) and (Equation 3) into (Equation 1), tan θx = EF / DE = (1−cos θ) / (√2 · sin θ) is obtained. Therefore, θx = arctan [(1-cos θ) / (√2 · sin θ)] (Equation 4) is obtained.

The angle θy is a triangle OD shown in FIG.
From G ₁ , sin θy = DG ₁ / OD θy = arcsin (DG ₁ / OD) where DG ₁ = EF, EF = (1-cos θ) / √2
Therefore, DG ₁ = (1−cos θ) / √2. Also, since ∠CDO = ∠CBO, ∠CB
From O = 45 °, ∠CDO = 45 °. In the triangle ODC, CD = 1, ∠C
From DO = 45 °, OD = CDtan∠CDO = tan45 ° = √2. Therefore, θy = arcsin (DG ₁ / OD) = arcsin (((1-cos θ) / √2) / √2) θy = arcsin ((1-cos θ) / 2) (Equation 5) is obtained.

Further, the angle θz is a triangle FO shown in FIG.
From G ₁ , tan θz = FG ₁ / OF = DE / OF Here, from the triangle EOF shown in FIG. 9, OF = (1 + cos θ) / √2 From the above equation, tan θz = sin θ / [(1 + cos θ) / √2] = √2 sin θ / (1 + cos θ) Therefore, θz = arctan [√2 · sin θ / (1 + cos θ)] (Equation 6).

Therefore, the above-mentioned angle θ and angles θx, θ
Based on the relationship between y and θz, the cutting edge 31a of the tool 31 protruding leftward in the drawing from the origin O shown in FIG. 9 by a predetermined distance,
The position with respect to the work 30 can be accurately obtained. here,
The angle θy is determined by the arrow G centering on the turning center CT3 together with the turning head 19 together with the spindle 22 on which the tool 31 is mounted.
The tool 31 has a tilt about the X axis with respect to the XZ plane formed by the work mounting surface 35a of the table 35 of the tool 31 when the tool 31 is swung by the arbitrary angle θ in the H direction, and the tool to be machined by the tool 31 of the work 30. It is also the inclination angle WA of the slope to be machined perpendicular to 31. Therefore, if the inclination of the slope of the work 30 is regarded as the inclination of the tool 31, the inclination angle WA of the slope of the work 30 is calculated from (Equation 5).
The angle θ corresponding to the head turning amount TA2 for turning the turning head 19 can be obtained for the angle θy corresponding to. That is, from (Equation 5), sin θy = (1−cos θ) / 2 cos θ = 1−2 sin θy θ = arccos (1-2 sin θy) (Equation 7) is obtained.

On the other hand, the angle θz is the table 35 with respect to the Z axis of the tool 31 when the swivel head 19 is swung by the arbitrary angle θ in the directions G and H around the swivel center CT3 together with the spindle 22 on which the tool 31 is mounted. Of the workpiece mounting surface 35a, the inclination is about the Y axis perpendicular to the XZ plane, and at the time of machining, in order to maintain the vertical state of the tool and the machining surface, the tool is compensated for rotating by θz. It is also the amount of rotation of the table 35 from the reference origin BP. Therefore, from the previously obtained angle θ, the work 30
The angle θz corresponding to the table turning correction amount TA1 for turning the table 35 from the reference origin BP can be obtained for the angle θy corresponding to the inclination of the slope. That is, by substituting the previously obtained θ into (Equation 6), θz = arctan [√2 · sin (arccos (1-2siny)) / (1 + cos (arccos (1-2siny)))] (Equation 8) To get

Therefore, when the slope of the work 30 is processed, the slope angle W of the slope of the work 30 corresponding to the angle θy.
If only A is known, an angle θ corresponding to the head turning amount TA2 for turning the turning head 19 and an angle θz corresponding to the table turning correction amount TA1 for turning from the reference origin BP of the table 35 are calculated from the angle θy. The tool 31 can be positioned with respect to the slope of the work 30. That is, in the present invention, the coordinate conversion analysis control unit 60 of the machining control device 50 shown in FIG. 3 causes the tilt angle of the slope of the work 30 in the machining program in which the surface definition coordinates PCO input from the input unit 53 are loaded. Based on the data of WA, the swivel head 19 is calculated from (Equation 7) and (Equation 8).
Angle θ and table 3 corresponding to the head turning amount TA2 of
An angle θz corresponding to the table turning correction amount TA1 of 5 is calculated. Then, the machining control unit 56 shown in FIG. 3 commands the axis control unit 57 to take a predetermined angle based on the calculated value.

As described above, the angle θy corresponding to the inclination angle WA of the slope of the work 30, the angle θ corresponding to the head turning amount TA2 of the turning head 19 and the angle θz corresponding to the table turning correction amount TA1 of the table 35 are: Since they are related to each other, the processing control unit 56 which receives the command from the main control unit 51
When the coordinate conversion command is recognized, the table 35 and the swiveling head 19 are swung so that the tool 31 can adapt to the coordinates after the conversion based on the coordinate conversion command to the coordinate conversion analysis control unit 60 shown in FIG. While calculating the amount, the work coordinate system (WX, WY, WZ coordinates) is set to the machine coordinate system (X, Y, Z).
Command to convert to coordinates. Upon receiving the command, the coordinate conversion analysis control unit 60 shown in FIG. 3 defines the surfaces corresponding to the surfaces of the respective machining surfaces of the work 30 loaded in the machining program, based on the relationship between the work coordinates and the machine coordinates described above. Data PD4 and PD5 of coordinates PCO and data BD4 of reference coordinates BCO stored in the buffer memory 58.
On the basis of the above, the turning amount of the table 35 and the turning head 19 corresponding to each of the machining surfaces of the work 30 is calculated. In addition, the surface of each processing surface of the work 30 to WX, W
The Y and WZ coordinates are data PD1, PD2, PD3 of the surface definition coordinates PCO corresponding to the surfaces of the respective machining surfaces of the work 30 loaded in the machining program, and the data BD of the reference coordinates BCO stored in the buffer memory 58.
Convert from 1, BD2, BD3 to XYZ coordinates.

That is, regarding the turning amount of the table 35, the table turning basic amount TB due to the deviation between the work coordinates and the machine coordinates is set to TB = PD4 + BD4 from the data PD4 of the surface defining coordinates PCO and the data BD4 of the reference coordinates BCO, and
The work mounting surface 35 of the table 35 on the processing surface of the work 30
From the data PD5 of the surface defining coordinates PCO, the table turning correction amount TA1 due to the inclination with respect to a is set to PD5 = θy, and TA1 (= θz) is calculated from (Equation 8). Furthermore,
For the turning amount of the turning head 19, the head turning amount TA2 due to the inclination of the machining surface of the work 30 with respect to the work mounting surface 35a of the table 35 is set from the data PD5 of the surface defining coordinates PCO to PD5 = θy, and TA2 ( = Θ)
Is calculated. As described above, the coordinate conversion analysis control unit 60 shown in FIG.
After performing the analysis such as calculation of B, TA1, and TA2, the coordinate conversion analysis control unit 60 outputs the analysis result to the machining control unit 56, and the machining control unit 56 receiving the analysis result, the machining control unit 56, the axis control unit 57. To drive each of the drive motors 69 and 40 by a predetermined amount. Then, the axis control unit 57, which has received the command from the processing control unit 56, drives the B-axis drive motor 69 to move the table 35 shown in FIG.
B (= PD4 + BD4) and table turning correction amount TA1
The tool and the machining surface are opposed to each other by rotating in the P direction by (= θz), and the α-axis drive motor 40 is driven to rotate the rotating head 19 shown in FIG. 1 in the G direction by the head rotation amount TA2 (= θ). Then, the rotation center CT5 of the spindle 22 and thus the tool is positioned perpendicularly to the machining surface.

Further, the data PD1 of the surface definition coordinates PCO,
From the data BD1, BD2, BD3 of the reference coordinates BCO stored in PD2, PD3 and the buffer memory 58, the work coordinate system (WX, WY, WZ coordinates) is converted into the machine coordinate system (X,
The coordinate conversion analysis control unit 60 shown in FIG. 3 executes the conversion into (Y, Z coordinates), and outputs the calculation result to the processing control unit 56, so that the processing control unit 56 receiving the analysis result controls the axis control. The section 57 is instructed to drive each drive motor 65, 66, 67 by a predetermined amount. Then, the axis control unit 57, which receives the command from the processing control unit 56, causes the processing control unit 5 to move.
The drive motors 65, 66, 67 are driven by a predetermined amount based on the command of 6. That is, the X-axis drive motor 66 is driven to move the base 5 shown in FIG. 1 by D1 in the X-axis direction,
The Y-axis drive motor 66 is driven to move the headstock 9 shown in FIG. 1 by D2 in the Y-axis direction, and the Z-axis drive motor 67 is driven to move the column 6 shown in FIG. 1 by D3 in the Z-axis direction. Match the cutting edge of the tool with the work origin of the machining surface.

As described above, the tool 31 can be positioned at the machining start position (work origin) with the cutting edge 31a of the tool 31 facing the machining surface of the work 30 perpendicularly.
The machining control unit 56 instructs the axis control unit 57 and the like based on a machining command or the like to drive the spindle 22 and rotate the spindle 22 together with the tool in the arrow J or K direction. Then, the headstock 9 is appropriately moved in the directions of arrows E and F, and the base 5 and the column 6 are driven to be moved in the X-axis direction or the Z-axis direction.
Is processed. Therefore, the operator does not need to obtain the rotation angle of the head and the rotation angle of the table according to the inclination of the machining surface when machining the machining surface of the slope of the workpiece, and the inclination angle of the machining surface of the slope of the workpiece can be calculated. Only by inputting, the head and the table are automatically rotated and positioned according to the inclination of the processed surface.

Next, the operation of mounting the touch sensor tool 150 on the spindle spindle 22 and measuring the processing portion on the inclined surface in this five-face processing machine will be described. As shown in FIG. 2, the touch sensor 1 mounted on the spindle spindle 22.
50 has a probe 152 and emits a signal when the probe 152 contacts an object. This signal is sent to a first oscillator 154 integral with the touch sensor tool 150. A first receiver 160 is provided on the head 19 side, and receives a signal from the touch sensor 150 in a non-contact state. The receiver 160 is a casing 20 of the swivel head 19.
The inside is connected via a line 170 to a ring-shaped second oscillator 200 attached to the outer peripheral portion of the swivel shaft 12 in the head support portion 10. This ring-shaped transmitter 200
Rotates with the swivel shaft 12, but has a function of transmitting a signal from the outer peripheral portion thereof. A second receiver 220 is provided on the casing side of the head support 10 so as to face the ring-shaped transmitter 200. The second receiver 220 receives the signal from the ring-shaped transmitter 200 in a non-contact state.

FIG. 4 shows a ring-shaped transmitter 200 and a first transmitter.
It is an explanatory view showing the details of the receiver 160 and the second receiver 220 of. The signal transmitted from the first receiver 160 via the line 170 is transmitted from the outer peripheral portion 202 of the ring-shaped transmitter 200. Therefore, even if the oscillator 200 rotates, the second oscillator is arranged so as to face the ring-shaped oscillator.
It is possible to reliably transmit a signal to the receiver 220 of the above without contact. 10 and 11 explain an operation of measuring the diameter dimension of the hole 300 cut on the oblique surface of the work 30 using the touch sensor tool 150. As described above, the control device for the five-sided machine can set the coordinate axes by handling the oblique surface in the same manner as a normal plane. Therefore, the spindle equipped with the touch sensor tool 150 can move up and down along an axis perpendicular to the oblique surface, and can move on two axes orthogonal to the vertical axis. Therefore, insert the probe 152 of the touch sensor tool 150 into the hole 300 and move it on the diameter line,
By detecting that the probe 152 has contacted the side wall 302 of the hole 300 and reading the coordinates at that time, the hole 3
The diameter dimension of 00 can be measured.

12 to 14 show various examples of measuring a machined portion on an oblique surface using a touch sensor tool. Figure 1
2 shows an example of measuring the inner diameter dimension D ₁ of the hole H ₁ and an example of measuring the outer diameter dimension D ₂ of the boss-shaped protrusion B ₁ . The operation of the touch sensor tool when measuring these holes and protrusions is patterned in advance and stored in the machining program memory as a measurement program. FIG. 13 shows an example of measuring the width dimension W ₁ of the groove S ₁ and an example of measuring the width dimension W ₂ of the web-shaped protrusion M ₁ . Similarly, FIG. 14 shows an example of measuring the example of measuring the center-to-center distance L ₁ between the grooves S _1, S ₂ of two, two of the center distance L ₂ of the holes H _1, H ₂ are shown Has been done. In any measurement, the operation pattern of the touch sensor tool is as described above, as a measurement program,
Filed in the machining program memory.

FIG. 15 is a flow chart of control processing when measurement is performed using the touch sensor according to the present invention. In the process started in step 1000, the touch sensor tool prepared in advance in the tool magazine in step 1010 is mounted on the spindle spindle via a known tool changing device. In step 1020, the spindle head and the table are rotated to a position where the axis of the probe of the touch sensor tool is perpendicular to the measurement surface. The turning angle between the spindle head and the table, which corresponds to the angle of the oblique surface, is calculated by the above-described arithmetic expression. In step 1030, three-dimensional coordinates are exchanged inside the NC device for the positioned measurement surface, and the program coordinates are set. Step 10
At 40, the operation pattern of the touch sensor tool according to the object to be measured is read from the machining program memory and the measurement is executed. In step 1050, the measurement result is calculated from the coordinate value touched by the touch sensor, and in step 1060, the calculation result is printed out as necessary.
The processing ends at 70.

[0038]

INDUSTRIAL APPLICABILITY As described above, the present invention is a five-sided machine having a structure in which a spindle is attached to a turning head, and a ring-shaped transmitter is used between the turning head and a supporting member of the head. Since the conventional signal transmission device is provided, signals relating to the orientation of the spindle can be transmitted in a non-contact manner, and there is no restriction on the operation of the swiveling head. Further, when the touch sensor tool is mounted on the spindle to measure the work, the signal can be smoothly transmitted to the control device.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a five-side processing machine according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a main part of a headstock of the five-face machining machine shown in FIG.

FIG. 3 is a control block diagram of a machining control device mounted on the five-face machining machine shown in FIG. 1.

FIG. 4 is a detailed view of a ring-shaped transmitter and receiver.

FIG. 5 is a diagram showing an example of definition of coordinates.

6 is a diagram showing an example of coordinate data of the work shown in FIG.

FIG. 7 is a view showing an example in which the coordinates of each processing surface of a work are defined for the 5-axis control processing machine shown in FIG. (A) is a figure which shows a reference condition. (B) is a figure which shows a surface definition condition.

FIG. 8 is a diagram showing angles between a spindle mounted on a head and X, Y, and Z axes.

FIG. 9 is a diagram showing an angle between a spindle mounted on a head and X, Y, and Z axes.

FIG. 10 is an explanatory diagram showing measurement by a touch sensor tool on a processed surface.

11 is a sectional view of FIG.

FIG. 12 is an explanatory diagram showing measurement of a diameter dimension.

FIG. 13 is an explanatory diagram showing measurement of a width dimension.

FIG. 14 is an explanatory diagram showing measurement of a center-to-center distance.

FIG. 15 is a flow chart of measurement control.

[Explanation of symbols]

2 frame (bed) 10 head support means (head support part) 19 turning head 22 tool spindle (spindle) 35 table 40 head turning drive means (α axis drive motor) 55 memory means (processing program memory) 56 drive means (processing control) 57) Drive means (axis control section) 60 Head rotation angle, table rotation angle calculation means (coordinate conversion analysis control section) 69 Table rotation drive means (B axis drive motor) 150 Touch sensor tool 200 Ring transmitter 220 Receiver MA Inclination angle (angle) MB Rotation angle (angle) WA Inclination angle (angle) WB Rotation angle (angle) BCT Machining surface angle information (reference condition) PDT Machining surface angle information (surface definition condition) TA1 2nd turning angle (table) Turning correction amount) TA2 First turning angle (head turning amount) TB Second turning angle (TE Bull turning basic amount) CT1 second pivot axis (rotation center) CT3 first pivot axis (pivot) CT5 tool rotation shaft (rotation center)

Claims (2)

[Claims] 1. A frame, a head support member having a column on the frame and moving in a direction perpendicular to the column, and a swivel attached to the head support member via a swivel shaft so as to be rotatable. A five-sided machine having a head, a spindle spindle mounted on the swing head, and a table on the frame, and capable of processing the upper surface and the side surface of a workpiece mounted on the table, the swing head Transmission device of a five-sided machine equipped with a ring-shaped transmitter mounted on the outer peripheral portion of the rotating shaft of the robot and a receiver mounted on a head support member for receiving signals of the ring-shaped transmitter in a non-contact manner . 2. A touch sensor tool mounted on a spindle spindle, a transmitter mounted on the touch sensor tool, a receiver mounted on a swivel head for receiving a signal from the transmitter in a non-contact manner, The signal transmission device for a five-side machining machine according to claim 1, further comprising means for transmitting a signal from a receiver to the ring-shaped transmitter.