JPH11156655A - Pipe chuck method and device in material indexing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically attach a pipe to chucks, and manage fastening torque based on size of the pipe. SOLUTION: A work rotating member 21 is arranged on a face plate 19 of a main body frame 15 so as to enable rotation indexing. A plurality of chucks 45 are arranged on the work rotating member 21 movably toward a pipe. An operating groove are formed on the surface of the chuck 45 obliquely in a moving direction of the chuck 45. An operating member arranged on a movable plate arranged slidably on the surface of the work rotating member 21 is fitted to the operating groove 49. A support shaft projected from the work rotating member 21 is inserted into a guiding long hole 55. An operating shaft journalled on a leading end of the support shaft is screwed with a nut block 61 of the movable plate member. The plural chucks 45 are reciprocably moved toward a pipe W by advancing a torque motor 71 and fitting a wrench socket 69 to the socket of the operating shaft for rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for chucking a pipe in a material indexing apparatus.

[0002]

2. Description of the Related Art Conventionally, in a material indexing apparatus of a pipe processing apparatus such as a laser processing machine, in particular, a chuck apparatus of a material indexing apparatus in which a cylindrical material such as a pipe is rotated and positioned can penetrate the material into the chuck. Therefore, it is difficult to employ an air chuck or another power chuck, and a manual three- or four-jaw chuck is used. When the material is chucked by the manual chuck, the material is manually tightened using a tool such as a wrench. In the manual chuck, whether or not the material is correctly mounted on the chuck depends on visual observation.

[0003]

However, in the above-mentioned material indexing apparatus, since the mounting of the material cannot be supported because the material is manually mounted, a large labor and time are required for the mounting, and the automatic operation is performed. There was a problem that can not be.

There is another problem that the tightening torque of the chuck cannot be controlled because the material is manually mounted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a material indexing apparatus capable of automatically mounting a material on a chuck and controlling a tightening torque according to the size of the material. An object of the present invention is to provide a pipe chuck method and an apparatus therefor.

[0006]

According to a first aspect of the present invention, there is provided a pipe indexing method in a material indexing apparatus according to the present invention, in which a work rotating member is rotatably indexed on a face plate of a main body frame having a notched groove. In a pipe chuck method in a material indexing device provided so as to be capable of operating, a working shaft which is inserted into the notch groove and is screwed to a movable plate material movably provided along a surface side of the work rotating member. Is rotated by the torque rotation drive means to move the movable plate, and a plurality of chucks arranged on the work rotating member are synchronously moved to the center of the pipe via an interlocking mechanism along with the movement of the movable plate. The pipes are gripped by the plurality of chucks, and the pipes are moved by the torque control mechanism of the torque rotation drive means. And it is characterized in controlling the tightening torque.

Therefore, when the operating shaft is rotated by the torque rotation drive means, the plurality of chucks are automatically advanced in synchronization with the pipe inserted into the notch groove to grip the pipe. At this time, the tightening torque of the pipe by the chuck is managed by the torque control mechanism. It should be noted that pipes of different sizes and shapes can be dealt with by changing the length and shape of each of the plurality of chucks.

According to a second aspect of the present invention, there is provided a pipe chuck apparatus for a material indexing apparatus according to the present invention, wherein a work rotating member is rotatably indexed on a face plate of a main body frame having a notch groove. A movable member which is provided with a plurality of chucks on the work rotating member so as to be able to move forward and backward toward a center of a pipe inserted into the notch groove, and moves the plurality of chucks forward and backward synchronously via an interlocking mechanism. Is provided so as to be movable along the surface side of the work rotating member, and an operating shaft which is screwed to the movable plate so as to move the movable plate is provided. The operating shaft is rotated forward and reverse through a torque control mechanism. It is characterized in that a torque rotating drive means is provided.

Accordingly, the operation of the pipe inserted into the notch groove is automatically synchronized with the plurality of chucks by rotating the operating shaft by the torque rotation driving means. Forward to grip the pipe. At this time, the tightening torque of the pipe by the chuck is managed by the torque control mechanism. It should be noted that pipes of different sizes and shapes can be dealt with by changing the length and current of the plurality of chucks.

According to a third aspect of the present invention, there is provided a pipe indexing device in a material indexing apparatus according to the present invention, wherein the interlocking mechanism includes the plurality of chucks provided on the workpiece rotating member. In the guide groove, the groove is movably provided toward the center of the pipe, and the operation grooves are provided on the surfaces of the chucks, the operation grooves being long in the same oblique direction with respect to the movement direction of the chucks. An actuating member to be inserted into the movable plate is protruded from the movable plate.

Therefore, when the movable plate moves, the operating member moves in the operating groove of the chuck, so that the chuck moves forward and backward in the guide groove in the direction of the center of the pipe in synchronization with the tip of each of the plurality of chucks. The pipe is positioned substantially at the center of the notch groove and automatically gripped and fixed or released.

According to a fourth aspect of the present invention, there is provided a pipe chuck device in the material indexing device according to the second aspect of the present invention.
In the pipe chuck device of the material indexing device described above, a long slot for guiding is provided in the movable plate member in the rotation direction of the work rotating member, and a support shaft inserted into the long slot for guide protrudes from the work rotating member. In addition, an operating shaft is supported at the tip of the support shaft, and a nut block screwed to the operating shaft is provided on the movable plate.

Therefore, when the operating shaft is rotated forward and backward, the nut block moves, and the movable plate moves around the notch groove by the length of the guide slot.

According to a fifth aspect of the present invention, there is provided a pipe chuck apparatus in the material indexing apparatus according to the second or third aspect, wherein a socket portion is provided at a tip of the operating shaft. The wrench socket is provided with a torque rotary drive unit having a wrench socket fitted into the socket portion so as to be able to move forward and backward so that the wrench socket can be fitted and removed.

Therefore, when the torque rotation driving means moves forward, the wrench socket is easily fitted into the socket portion of the operating shaft by the rotating operation of the wrench socket and the forward movement of the torque rotation driving means.

According to the sixth aspect of the present invention, there is provided a pipe chuck apparatus in the material indexing apparatus according to the fourth aspect.
In the pipe chuck device of the material indexing device described above, the operating shaft is flexibly provided on the support shaft, and the nut block is flexibly provided on the movable plate.

Therefore, since both the operating shaft and the nut block are flexible, the wrench socket and the socket portion of the operating shaft can be easily fitted.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pipe chuck method and an apparatus for a material indexing apparatus according to the present invention will be described below with reference to the drawings.

Referring to FIGS. 6 and 7, for example, a laser processing machine as a pipe processing apparatus according to the present embodiment is a three-axis optical axis moving type NC laser processing machine of a cantilever type according to the present invention. It is an example in which a material indexing device of a laser beam machine is used.

The laser beam machine 1 is provided with an X-axis carriage 3 which can be moved and positioned in the X-axis direction by X-axis driving means driven under the control of an NC device (not shown). In the Y-axis direction orthogonal to the X-axis direction,
A Y-axis carriage 5 is provided which can be moved and positioned by a Y-axis driving means driven under the control of the NC device. A laser processing head 7 is provided below the Y-axis carriage 5 so as to be movable and positioned in a Z-axis direction orthogonal to the X and Y axes. The laser processing head 7 has a laser processing condensing device ( A nozzle 9 provided with a nozzle (not shown) is attached.

Further, a carbon dioxide gas laser oscillator 11 is provided on the upper part of the laser beam machine 1. A laser beam from the carbon dioxide gas laser oscillator 11 is supplied to a laser machining head 7 provided on the Y-axis carriage 5. It is configured to be guided to the nozzle 9 via an optical system (not shown).

In the laser processing machine 1, the processing area below the laser processing head 7 is
For example, when processing a plate material, a work table (not shown) is installed, and when processing a pipe W, a material indexing device 13 can be installed as shown in FIGS. . The pipe W mounted on the material indexing device 13 can be continuously index-controlled by a pipe rotation servomotor driven under the control of the NC device of the laser beam machine 1. .

In FIG. 6, a pipe supporting device 13a, which supports the pipe W and includes a roller driven by the pipe W rotated by the material indexing device 13, is provided on the right side.

Next, an embodiment of the material indexing device 13 will be described with reference to FIG. The main body frame 15 having the C-shaped groove of the material indexing device 13 is constituted by a face plate 19 erected on a base 17. On one side surface of the face plate 19, a plurality of support rollers 23 which engage with guide grooves (not shown) provided on the outer periphery and rotatably support the work rotating member 21 are provided at substantially equal intervals. ing. The work rotating member 21 is provided with a C-shaped groove that is substantially the same as the C-shaped groove of the main body frame 15. The support roller 23 is rotatably provided on a rotation shaft 25 fixed to the face plate 19 of the main body frame 15.

The work rotating member 21 is provided with, for example, a notch groove 27 having a width L for carrying a pipe W into and out of the work rotating member 21. Therefore,
The appearance of the work rotating member 21 is substantially C-shaped. A gear 29 is provided on the outer part of the work rotating member 21, and two drive gears 33 driven by the servomotor 31 are engaged with the gear 29 of the outer part.

The drive gear 33 is mounted on the main body frame 1.
5 is provided rotatably on a rotating shaft 35 provided on the front side of the face plate 19. The rotating shaft 35 extends through the face plate 19 and extends to the back side of the face plate 19. A pulley (not shown) such as a toothed pulley is rotatably provided on the rotating shaft 35. I have. Similarly, an output shaft (not shown) of the servo motor 31 provided on the front surface side of the face plate 19 is also provided so as to protrude on the back surface side of the face plate 19, and a drive pulley (not shown) provided on this output shaft is provided. A belt 37 such as a toothed belt is wound around a pulley (not shown) provided on the rotation shaft 35 of the drive gear 33.

The center distance between the two drive gears 33 is determined by the width L of the notch groove 27 provided in the work rotating member 21.
It is provided larger. Further, a tension means 39 for adjusting the tension of the belt 37 for driving the driving gear 33 is provided.

Various types of tension adjusting means can be employed. In the tensioning means 39 of this embodiment, a rotating roller 41 is pressed against the belt 37 on the back side of the face plate 19. It is provided freely.

In the above configuration, if the servo motor 31 is driven under the control of the NC device, the work rotating member 2
1 can be rotationally driven by the two drive gears 33 at a specified rotation speed in a specified rotation direction by a rotation angle.

A plurality of guide grooves 43 are provided on the work rotating member 21 around the notch groove 27 at appropriate intervals, and a chuck 45 is provided in each of the plurality of guide grooves 43. Pipe W inserted into notch 27
Is provided so as to be movable toward and away from the center portion CL of the notch groove 27 via an interlocking mechanism described later. Although the number and arrangement of the guide grooves 43 are not particularly limited, in the present embodiment, one guide groove 43 is provided at the bottom in FIG. 1 of the work rotating member 21 having an upward C-shape. 2 on each side
One guide groove 43 is provided, and a total of five guide grooves 43 are provided.

More specifically, the guide groove 43 is formed as shown in FIG.
As shown in FIG. 4 and provided on the surface side of the workpiece rotating member 21, at least the workpiece rotating member 2 is provided.
1 extends to an end surface 47 of the notch groove 27 on the central portion side. The chuck 45 is slidably fitted in the guide groove 43 toward the center of the notch groove 27.

Next, an interlocking mechanism for moving the chucks 45 forward and backward will be described. The operating groove 49 extends on the front surface side of each of the chucks 45 in the direction obliquely upward to the right in FIG. It is provided. The direction in which each of the operation grooves 49 is inclined is not particularly limited. However, since each of the operation grooves 49 is provided in the same oblique direction with respect to the forward movement direction of each of the plurality of chucks 45, each of the plurality of chucks 45 is synchronized. And move forward and backward.

Referring to FIG. 1, a substantially C-shaped movable plate member 51 as shown in FIG. 2 is provided on the surface of each of the plurality of chucks 45 and the work rotating member 21 over substantially the entire area thereof. It is slidably provided in the same direction as the rotating direction of the rotating member 21. As shown in FIG. 4, each of the chucks 45 is provided on the sliding surface of the movable plate 51.
A pin shaft 53 (operating member) to be inserted into the operating groove 49 is protruded.

The movable plate member 51 is provided with a guide slot 55 which is long in the same direction as the rotation direction of the work rotating member 21 at the lower part of the upwardly-facing C-shape in FIG. As shown in FIG. 5, a support shaft 57 that is flexibly protruded from the surface side of the work rotating member 21 is inserted into the guide slot 55, and the tip of the support shaft 57 is inserted into the guide shaft 55 as shown in FIG. , An operating shaft bracket 59 having an L-shaped cross section is provided.

On the front side of the movable plate 51, a nut block 61 is flexibly provided at a position facing the operating shaft bracket 59.

The operating shaft bracket 59 is mounted on the operating shaft bracket 59 as shown in FIGS.
The operating shaft 63 is provided with a socket portion 65 having, for example, a hexagonal hole at the tip thereof, and the rear end side of the operating shaft 63 is screwed to the nut block 61 via a screw portion 67. ing.

Referring to FIG. 1, on the left side of the material indexing device 13 in FIG.
A torque motor 71 (torque rotation drive means) provided with a wrench socket 69 which can be fitted into and removed from the socket portion 65 of the air cylinder 73 (rotation drive section movement means) at the end of a piston rod 75 of a moving air cylinder 73 (rotation drive section movement means) via a connecting plate 77. Fixed.

With the above configuration, the moving air cylinder 73
The piston rod 75 moves forward (to the right in FIG. 1), and thereby the torque motor 7 having the torque control mechanism is provided.
1 advances through the connecting plate 77. The wrench socket 69 of the torque motor 71 contacts the socket 65 of the operating shaft 63.

When the torque motor 71 rotates, the wrench socket 69 fits into the socket portion 65 of the operating shaft 63, and the operating shaft 63 rotates forward and backward. At this time, at the time of the contact, the wrench socket 69 is moved to the operating shaft 63.
The wrench socket 69 is fitted into the socket portion 65 of the operating shaft 63 by the rotation of the torque motor 71 and the thrust of the moving air cylinder 73 even if the wrench socket 69 is not properly inserted into the socket portion 65. Since both the operating shaft bracket 59 and the nut block 61 are flexible, the wrench socket 69 and the socket portion 65 of the operating shaft 63 are easily fitted.

The nut block 61 is moved by the forward and reverse rotation of the operating shaft 63, so that the movable plate 51 moves around the notch groove 27 by the length of the guide slot 55.

For example, when the operating shaft 63 is rotated in the reverse direction and the movable plate 51 moves counterclockwise in FIG. 1, the pin shaft 53 is moved into the operating groove 49 of the chuck 45 as shown in FIG. Is moved from the solid line to the position indicated by the two-dot chain line.
3 is pushed out by the pressing force of the pin shaft 53 so as to move forward toward the center of the notch groove 27 as shown by the two-dot chain line in FIG.

The tips of the plurality of chucks 45 abut against the pipe W, and the pipe W is positioned substantially at the center of the cutout groove 27 and is held and fixed by the plurality of chucks 45. At this time, the tightening torque of the pipe W is properly controlled by the torque control of the torque motor 71. As described above, the pipe W can be automatically grasped, and the tightening torque can be appropriately managed.

In the above state, the work rotating member 21 becomes rotatable with the pipe W held therebetween.
The laser processing can be performed while the work rotating member 21 is driven by the servo motor 31 and the pipe W is rotated to an arbitrary position. The work rotating member 2
The rotation drive 1 is driven by two drive gears 33 having an axial distance larger than the width L of the notch groove 27 of the work rotating member 21, so that the work rotating member 21 is driven within a range of 360 °. It is possible. Further, since the notch groove 27 is provided in the work rotating member 21, the pipe W can be loaded and unloaded from above the material index device 13, so that the material can be easily attached to and detached from the material index device 13.

After the laser processing of the pipe W is completed, the work rotating member 21 is returned to the home position. Next, when the operating shaft 63 is rotated forward and the movable plate 51 moves clockwise in FIG. 1, the pin shaft 53 is moved to the operating groove 4 of the chuck 45 as shown in FIG.
9, the chuck 45 moves backward from the center of the notch groove 27 by the pressing force of the pin shaft 53 as shown by the solid line in FIG. W is released from the chuck 45, and the pipe W is taken out.

The tightening torque can be freely changed depending on the type and use of the pipe W. Further, in order to grip a pipe W of a different shape or size, such as a round pipe or a square pipe, a plurality of pipes W as shown in a two-dot chain line in FIG. This can be dealt with by changing the length of the chuck 45 and the shape of the tip.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. In this embodiment, a laser processing machine has been described as an example of a pipe processing apparatus. However, a pipe processing apparatus that variously processes a pipe W, such as a fusing machine or a pipe cutting machine, or another pipe processing apparatus may be used.

[0047]

As will be understood from the above embodiments of the present invention, according to the first aspect of the present invention, the operating shaft of the pipe inserted into the notch groove is rotated by the torque rotation driving means. Thus, the plurality of chucks can automatically advance in synchronization with each other to grip the pipe. At this time,
The torque control mechanism can control the tightening torque of the pipe by the chuck. It should be noted that pipes of different sizes and shapes can be dealt with by changing the length and shape of each of the plurality of chucks.

According to the second aspect of the present invention, the same effect as in the first aspect is achieved, and the pipe inserted into the notch groove is automatically turned by the rotation of the operating shaft by the torque rotation driving means. The plurality of chucks can advance synchronously to grip the pipe. At this time, the tightening torque of the pipe by the chuck can be managed by the torque control mechanism.
It should be noted that pipes of different sizes and shapes can be dealt with by changing the length and shape of each of the plurality of chucks.

According to the third aspect of the present invention, when the movable plate moves, the operating member moves in the operating groove of the chuck, so that the chuck moves forward and backward in the guide groove in synchronization with the center of the pipe. The pipe can be positioned substantially at the center of the notch groove at the tip of each of the plurality of chucks, and can be automatically gripped and fixed or released.

According to the fourth aspect of the present invention, the nut block is moved by the forward / reverse rotation of the operating shaft, so that the movable plate can move around the notch groove by the length of the guide slot.

According to the fifth aspect of the present invention, when the torque rotation driving means moves forward, the wrench socket is easily fitted into the socket portion of the operating shaft by the rotation of the wrench socket and the forward movement of the torque rotation driving means. Can be combined.

According to the invention of claim 6, since both the operating shaft and the nut block are flexible,
The wrench socket can be easily fitted to the socket of the operating shaft.

[Brief description of the drawings]

FIG. 1, showing an embodiment of the present invention, is a front view of a material indexing device of a laser beam machine.

FIG. 2, showing an embodiment of the present invention, is a front view of a movable plate.

FIG. 3 illustrates an embodiment of the present invention, and is a detailed view illustrating an operation of a chuck.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV of FIG. 1;

FIG. 6 is a front view of an example in which a material indexing device for a laser beam machine according to the present invention is used in an NC laser beam machine.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laser processing machine 15 Main body frame 21 Work rotation member 23 Support roller 27 Notch groove 37 Belt 39 Tension means 41 Rotation roller 43 Guide groove part 45 Chuck 49 Operation groove part 51 Movable plate material 53 Pin shaft (operation member) 55 Slot for guide 57 Support shaft 59 Operating shaft bracket 63 Operating shaft 65 Socket part (of operating shaft 63) 61 Nut block 69 Wrench socket 71 Torque motor (Torque rotation driving means) 73 Moving air cylinder (Rotation driving part moving means)

Claims (6)

[Claims] 1. A pipe chucking method in a material indexing apparatus in which a work rotating member is rotatably indexed on a face plate of a main body frame having a notch groove, wherein a pipe is inserted into the notch groove to rotate the work. The operating shaft screwed to the movable plate material movably provided along the surface side of the member is rotated by torque rotation driving means to move the movable plate material, and the movable plate material is moved via an interlocking mechanism with the movement of the movable plate material. By moving a plurality of chucks arranged on the work rotating member forward toward the center of the pipe in synchronization with each other, the pipe is gripped by the plurality of chucks, and a torque control mechanism of a torque rotation driving unit is used. A pipe chuck method in a material indexing apparatus, wherein a pipe tightening torque is controlled. 2. A pipe chuck device in a material indexing device in which a work rotating member is rotatably indexed on a face plate of a main body frame provided with a notch groove, wherein a plurality of chucks are mounted on the work rotating member in the notch groove. A movable member is provided so as to be able to move forward and backward toward the center of the pipe inserted through the movable member, and the movable member that moves the plurality of chucks forward and backward in synchronization through an interlocking mechanism is movable along the surface side of the work rotating member. An operating shaft that is screwed to the movable plate so as to move the movable plate, and a torque rotation driving unit that rotates the operating shaft forward and reverse via a torque control mechanism. Pipe chuck device in material indexing device. 3. The interlocking mechanism disposes the plurality of chucks movably toward a center of the pipe in a guide groove provided in the work rotating member, and mutually moves the chucks in a moving direction of the chucks. 3. A material index according to claim 2, wherein the same obliquely long operating groove is provided on the surface of each of the chucks, and an operating member fitted into the operating groove is protruded from the movable plate. Pipe chuck device in the device. 4. A long guide hole is provided in the movable plate member in the rotation direction of the work rotating member, and a support shaft inserted through the long guide hole is protruded from the work rotating member, and a tip of the support shaft is provided. 4. The pipe chuck device according to claim 2, wherein a nut block screwed to the operating shaft is provided on the movable plate. 5. A method according to claim 1, wherein a socket portion is provided at a tip end of said operating shaft, and torque rotation driving means having a wrench socket fitted into said socket portion is provided so that said wrench socket can move forward and backward so as to be able to be fitted and removed. The pipe chuck device in the material indexing device according to claim 2, 3, or 4. 6. The pipe chuck apparatus according to claim 4, wherein the operating shaft is flexibly provided on the support shaft, and the nut block is flexibly provided on the movable plate. .