JPH10175087A - Device and method for feeding/transporting of bar stock, centering/positioning of bar stock and also machining of bar stock in laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the device and method that are capable of automatically supplying and discharging bar stock, that save labor and time in setting, that are capable of constantly feeding even a long bar stock, and that are used for accurate machining. SOLUTION: A pipe placed on an inclined pipe supply shelf is fed one by one by a pipe stopper to a pipe carrier 25, and brought into an index device 17 adjacent to the body of a laser beam machine 3 by the pipe carrier 25, with clamping and rotary indexing performed. The pipe clamped by a chuck is transported only by a desired quantity by rotatably driving a part or all of plural rollers provided inside the chuck. In addition, since the rollers are locked without rotation at the time of non-transportation, the pipe is fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar feeding apparatus and a bar conveying method in a laser beam machine, a bar centering / positioning apparatus, a bar centering / positioning method, and a bar processing method. is there.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, in a laser beam machine provided with an index device 201 for rotatingly indexing a pipe W as a bar to be processed, a laser beam machine is provided on the opposite side of the index device 201. Is the chuck 20
Work W gripped by index device 201 by 3
Tailstock 20 for pushing the paper to the index device 201 side
5 are provided.

[0003]

However, in such a conventional technique, when the pipe W has no rigidity or is long, twisting may be caused by rotating the pipe W by the index device 201. Or a problem that the rotation of the tailstock 205 cannot be satisfactorily performed due to friction of the tailstock 205.

Further, the tailstock 20 depends on the diameter of the pipe W.
5, the origin of the material does not coincide with the origin of the machine.
Since the pipe 3 must be loosened and the pipe W must be removed, and the chuck 203 must be tightened again to set a new pipe W, there is a problem that a long time is required for setup.

[0005] In addition, together with the set of pipe W is complicated not must be done in the human power of the worker, if able to supply any pipe W for the amount pressed against the diameter of the pipe W changes changes management is troublesome . Further, since the pipe W is pressed against the index device 201, there is a problem that it is difficult to perform constant feeding.

SUMMARY OF THE INVENTION An object of the present invention is to pay attention to the conventional technology as described above, and it is possible to automatically supply and discharge a rod material, and it is possible to maintain a long rod material without any trouble in setup. Provided are a bar supply device, a bar transport method, a bar centering / positioning device, a bar centering / positioning method, and a bar processing method in a laser beam machine for performing accurate processing capable of feeding. It is in.

[0007]

According to a first aspect of the present invention, there is provided a bar supply apparatus for a laser beam machine, comprising: a plurality of bars to be processed; A shelf, a bar removing device for removing bars one by one from the bars placed on the bar supply shelf, and a bar provided in one side of the bar supply shelf in the transport direction of the bars and supplied. A bar transporter for loading the bar, and a bar provided adjacent to the laser processing machine main body and clamping the bar to a desired position of the bar carried by the bar transporter to clamp the bar to a predetermined position. An indexing device that can rotate and index by an angle,
It is characterized by comprising.

Accordingly, the bars placed on the bar supply shelf are:
The bar is taken out one by one by the bar take-out device,
The material is carried into the indexing device provided adjacent to the laser beam machine main body by the bar material transporter, and clamping and rotation indexing are performed.

According to a second aspect of the present invention, there is provided a bar supply device for a laser beam machine, wherein the index device according to the first aspect clamps one end of the bar to be rotatably indexed so as to rotationally index a bar to be processed. A drive-side index supported so as to be able to reciprocate in the direction in which the bar is carried in, and a driven index in which the other end of the bar is rotatably supported and supported so as to be able to reciprocate in the direction in which the bar is carried in. A transmission device that transmits the rotational driving force by connecting the driving side index and the driven side index so that they can approach and separate from each other, and a drive motor that rotationally drives the transmission device. is there.

Accordingly, one end of the loaded bar is rotatably clamped by the driving side index, and the other end is rotatably clamped by the driven side index.
The driving side index and the driven side index can reciprocate in the loading direction, and the rotation driving force of the driving motor is transmitted by a transmission device penetrating both indexes to synchronously index the rotation of the bar.

According to a third aspect of the present invention, there is provided a bar supplying apparatus for a laser beam machine, wherein the driving side index and the driven side index according to the second aspect are supported so as to be able to approach and separate from each other, and are capable of reciprocating as a whole in a bar loading direction. The unit frame and the unit frame are abutted against a positioning stopper provided on the laser processing machine, and are provided so as to be freely protrudable and retractable on the unit frame so that the material origin of the bar material coincides with the mechanical origin of the laser processing machine. And an abutment.

Therefore, the unit frame in which the driving side index and the driven side index are provided so as to be able to approach and separate from each other is reciprocally movable in the bar loading direction, and this unit frame abuts against the positioning stopper of the laser beam machine. At the same time, the original point of the material coincides with the mechanical origin by erecting the butting provided on the unit frame and abutting the tip of the bar to be processed.

According to a fourth aspect of the present invention, there is provided a bar supply device for a laser beam machine, wherein the indexer according to the first or second aspect has an inner surface of a chuck for clamping the bar.
A plurality of rollers for carrying in the bar, and a part or all of the plurality of rollers are rotationally driven when the bar is carried in, and the plurality of rollers are fixed when the bar is not carried in. is there.

Accordingly, the bar material clamped by the chuck is conveyed by a desired amount by rotating part or all of the plurality of rollers provided on the inner surface of the chuck. Further, when the sheet is not conveyed, the roller is fixed and does not rotate, so that the bar is fixed.

According to a fifth aspect of the present invention, there is provided a bar conveying method, wherein a bar is conveyably supported by a driving roller and a driven roller provided on an inner surface of a chuck for clamping the bar in an index device. Driving the drive roller to convey the bar by a desired amount, and stopping the drive roller to prevent the bar from being conveyed when the bar is not conveyed;
It is characterized by the following.

Accordingly, the driving roller and the driven roller are provided so as to protrude from the inner surface of the chuck. Even in the clamped state, the driving roller is driven to rotate so that the bar can be transported by a desired amount. it can. Also,
At the time of non-conveyance, the driving roller is stopped, so that the bar is fixed.

According to a sixth aspect of the present invention, there is provided a bar centering / positioning apparatus, wherein a tip has a conical shape to indicate a conveyance center and has a groove along a side surface of the conical shape, and the centering block. A centering block driving device that supports the center of the material in a reciprocating manner along the direction in which the bar is transported, a positioning block that indicates the material origin, and a tip of which engages with the groove of the centering block. And a positioning block driving device that presses the positioning block in a groove of the centering block in a direction orthogonal to a bar-conveying direction at a position.

Therefore, a pipe, for example, a rod, is pushed into a groove provided on the side surface of the centering block by a positioning block driving device, and is abutted against a positioning block indicating the material origin to position the pipe at the origin. In this state, the tip of the conical centering block is pushed into one end of the pipe to simultaneously center the pipe and set the origin. When the conical centering block is pushed into the pipe, the positioning block retreats. However, this positioning block is always pressed against the centering block during positioning and does not separate from the centering block.

According to a seventh aspect of the present invention, there is provided a method for centering and positioning a rod material, wherein one end of the conveyed rod material is brought into contact with a positioning block movable at a material origin position in a direction orthogonal to the carry-in direction, and conveyed. A centering block having a conical shape indicating the center is pressed against one end of the bar, and the positioning block is moved backward without being separated from the centering block as the centering block advances. It is.

Therefore, for example, one end of a pipe, which is a bar, is brought into contact with a positioning block indicating the material origin to set it at the material origin, and the tip, which is the center, indicates the position where the center of the pipe should be aligned. The centering block is pushed into one end of the pipe to simultaneously center the pipe.
When the conical centering block is pushed into the pipe, the positioning block retreats, but this positioning block does not separate from the centering block.

According to an eighth aspect of the present invention, there is provided a bar processing method wherein a bar is clamped by an air chuck of an index device provided adjacent to a laser processing machine, and the index device rotates and indexes to a desired position to perform laser processing. Do
The air chuck is rotated by the index device so that an opening of the air chuck is directed to a lower discharge direction, and the processed bar is discharged by opening the air chuck.

Therefore, at the time of machining, the indexing device performs rotation indexing of the bar to be machined, and after the machining, the bar is rotated by the index device to a position where the opening of the air chuck faces downward. Discharge of rod material.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a bar supply device in a laser beam machine according to the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show, for example, a pipe feeder 1 as a bar feeder according to the present invention and a laser beam machine 3 to which the pipe feeder 1 is applied. The laser processing machine 3 includes an X-axis carriage 7 that can be moved and positioned in the X-axis direction by an X-axis driving unit (not shown) driven by the control of an NC device 5 as a control device. The X-axis carriage 7 is provided with a Y-axis carriage 9 that can be moved and positioned in the Y-axis direction by a Y-axis driving unit (not shown) driven by the control of the NC device 5.

A laser processing head 11 is provided below the Y-axis carriage 9 so as to be movable up and down in the Z-axis direction. A nozzle (not shown) for emitting a laser beam is attached to the lower end of the laser processing head 11. Have been.

A laser oscillator 13 for emitting a laser beam and a laser power supply 15 for the laser oscillator 13 are provided above the laser beam machine 3. The laser beam emitted from the laser oscillator 13 is guided to a nozzle by an optical system (not shown) to perform laser processing.

In front of the laser beam machine 3 in FIG.
An index device 17 for gripping, for example, a pipe W serving as a workpiece and rotating and indexing it by a predetermined amount to perform processing is provided, and a pipe position detection sensor for detecting the position of the pipe W is provided. 19 are provided. On the right side of the index device 17 in FIG. 1, the above-described pipe supply device 1 that supplies the pipe W to the index device 17 is provided.

Referring to FIG. 3 as well, in the pipe supply apparatus 1, for example, a pipe supply shelf 21 as a bar supply shelf on which a large number of pipes W are placed and placed is inclined. In the above, the pipe W is prevented from dropping by the pipe stopper 23 as a bar removing device. Below the inclined surface of the pipe supply shelf 21, there is provided a pipe carrier 25 as a bar carrier for supplying the pipe W to the laser beam machine 3.

Referring to FIG. 4, the pipe conveyor 25
Has a U-shaped pipe transfer path 27 extending upward in the transfer direction (the left-right direction in FIG. 1) and a pipe pushing block 29 movable along the pipe transfer path 27 in the transfer direction. I have. This pipe extrusion block 29
The drive sprocket 31 provided at the right end of the pipe transport path 27 in FIG. 1 and the chain 35 rotatably wound around a driven sprocket 33 provided at the left end of the pipe transport path 27. It is fixed, and is movable in the transport direction by rotating the drive sprocket 31 by a servomotor 37 as a drive motor.

Referring also to FIG. 5, in the index device 17, inside the unit frame 41 provided on the base 39 of the laser beam machine 3, the drive side index 43 is shown on the right side in FIG. And a driven index 45. The drive side index 43 and the driven side index 45 have a linear guide 47 on the lower side, and are movably supported along a guide rail 49 provided on the bottom surface of the unit frame 41. In the drive-side index 43 and the driven-side index 45, the wires and the like do not obstruct the work by the cable bear 51.

The unit frame 41 has a ball spline 5 as a transmission device penetrating in the left-right direction in FIG.
3 is rotatably provided, and is covered with a dustproof bellows 55. The ball spline 53 is connected to a servomotor 61 as a drive motor via a coupling 57, a gear 59, and the like. Each of the drive-side index 43 and the driven-side index 45 is provided with a spline nut 63 (see FIG. 6) screwed into the ball spline 53.

Accordingly, the spline nuts 63 of the driving side index 43 and the driven side index 45 are driven to rotate synchronously.

The unit frame 41 is provided with an abutment 65 for positioning the pipe W at the material origin. The abutment 65 is provided so as to be able to protrude upward by an abutment cylinder 67. Further, the laser processing machine 3 is provided with a positioning stopper 69 for stopping the index device 17 transported by the chain 25 rotated and driven by the servomotor 35 at the mechanical origin.

Therefore, the indexing device 17 is transported until it comes into contact with the positioning stopper 69, and the pipe W supplied to the indexing device 17 strikes against the abutment 65, so that the material origin and the mechanical origin coincide with each other. Can be set, so that the working efficiency can be improved. When the positioning of the pipe W is not performed, the abutment 65 is lowered by the abutment cylinder 67 so as not to hinder the work.

Referring to FIG. 6, drive side index 43
I will explain. Note that the structure of the driven index 45 is the same as that of the driving index 43, and a duplicate description will be omitted.

The drive-side index 43 has a frame 71 having a substantially rectangular shape as a whole. The linear guide 47 is provided below the frame 71, and the guide rail provided on the unit frame 41 is provided. It is movably supported on 49. The spline nut 63 described above is rotatably provided on the front surface of the frame 71, and rotates with the rotation of the ball spline 53.

Accordingly, the driving pulley 73 attached to the spline nut 63 rotates by the rotation of the ball spline 53, and
The drive gears 77 are rotationally driven. The timing belt 75 is always wound around the tension pulley 79 with a predetermined tension. On the front surface of the frame 71, five support rollers 81 are provided symmetrically to the left and right and rotatable at substantially equal intervals.

On the upper front surface of the frame 71, a ring-shaped pipe fixing member 85 partially having an opening 83 is rotatably supported by the five support rollers 81. A gear 87 is provided on the outer circumference of the pipe fixing member 85 and meshes with the two drive gears 77.
A chuck 89 for clamping the pipe W is provided on the front surface of the pipe fixing member 85.

Therefore, the servo motor 61 is driven by the control of the NC device 5 to rotate the ball spline 53,
Since the pipe fixing member 85 can be rotated by rotating the driving gear 77 via the driving pulley 73 and the timing belt 75, the pipe fixing member 85 is fixed to the pipe fixing member 85 by rotating and indexing the pipe fixing member 85. Can be rotated to a desired position.

Next, the chuck 89 provided on the front surface of the pipe fixing member 85 of the driving side index 43 will be described with reference to FIG.

The entire C-shaped chuck 89 having an opening 91 similar to the opening 83 in the frame 71 of the driving side index 43 has an internal space 93 at the center for passing the supplied pipe W. . This internal space 9
3 is provided with a clamper 95 for clamping a pipe W as a workpiece.
Is provided.

Therefore, the pipe W, which is the workpiece supplied to the driving side index 43, is
7, the clamp W is clamped to the chuck 89 by the clamper 95, so that the rotation of the drive side index 43 rotates the pipe W to a desired position and performs laser processing.

A drive roller 99 is provided on the left clamper 95 in FIG. 7 facing the internal space 93, and a driven roller 101 is rotatably provided on the lower and right clampers 95 in FIG. On the other hand, an upper and lower cylinder 103 is provided below the chuck 89, and a base plate 107 is attached to the piston rod 105. The drive roller 99 is provided on the base plate 107.
A servomotor 109 for driving the motor is mounted and moves up and down by driving the vertical cylinder 103.
A rotary shaft 111 of the servo motor 109 is provided with a rotary shaft 115 via a torque transmission unit 113.
Is driven to rotate.

The torque transmission unit 113 has a convex wheel 117 mounted on the rotary shaft 111 of the servomotor 109 and a concave wheel 119 mounted on the lower end of the rotary shaft 115. Cylinder 103
When the servomotor 109 is raised by the
Engages with the concave wheel 119 to transmit a rotational force by frictional force. Therefore, the servo motor 1 is
In a state where 09 is lowered, the rotational force of the servo motor 109 is not transmitted to the drive roller 99.

With reference to FIG. 8, a description will be given of the operation of clamping and feeding the supplied pipe W.

The drive side index 43 is returned to the origin, and is brought into the state shown in FIG. 7 (step S1). In this state, the rotating shaft 115 is located coaxially above the rotating shaft 111 of the servomotor 109 (step S2). The clamper 95 is opened by the clamping cylinder 97 (step S3), and the pipe W is set (step S3).
4) Driving the clamping cylinder 97 to drive the clamper 95
Is closed and clamped (step S5).

Next, air is supplied to the upper and lower cylinders 103 to raise the servomotor 109 (step S6),
The convex wheel 117 is engaged with the concave wheel 119 to connect the torque transmission unit 113 (step S7). Servo motor 1
09 (step S8), and the rotating shaft 11
5 is driven to rotate, and the driving roller 99 is driven to rotate. Since the pipe W is fed by the rotation of the driving roller 99, the driven roller 101 supporting the pipe W also rotates (step S9). When the fixed amount feeding is completed as described above, the servo motor 109 is stopped (step S10), and the upper and lower cylinders 103 are lowered (step S10).
11) Disconnect the torque transmission unit 113 (step S1)
2). At this time, the rotation shaft is prevented from rotating by a brake mechanism such as a cam (not shown).
Since the clamped pipe W does not move, laser machining is performed at a desired position by rotation indexing of the driving side index 43 (step S13).

As described above, since the chuck 89 is provided with the driving roller 99, the pipe W can be fed by a desired amount. Further, by cutting off the torque transmission unit 113, the pipe W can be clamped so as not to move.

Referring to FIG. 9 and FIG.
The positioning device 121 is shown. In the centering / positioning device 121, a conical centering block 123 that presses an end of the pipe W to center the pipe W is rotatably provided at a tip end of a shaft 125 via a bearing 127. . A centering block pushing / pulling cylinder 129 is provided at the other end of the shaft 125.

A groove 131 is provided on the side surface of the centering block 123 along the slope, and a positioning block 133 movable along the groove 131 in a direction perpendicular to the pipe W (left-right direction in FIG. 9). Is provided. The positioning block 133 is provided with a bush 137 on the inner surface of the sheath member 135, and is attached to the tip of a round shaft 139 slidably provided along the bush 137. The tip of the positioning block 133 is inclined in accordance with the inclination of the groove 131 of the centering block 123, and the rear end is pressed against the centering block 123 by the spring 141 via the round shaft 139. The spring 141 is further connected to a piston rod 145 of a positioning block pushing / pulling cylinder 143.

Therefore, when positioning, the positioning block pushing / pulling cylinder 143 is turned off and the spring 14
The repulsive force of 1 constantly presses the positioning block 133 against the centering block 123. Therefore, when the centering block 123 is extruded, the positioning block 133
Is pushed back by the inclination of the centering block 123, but the resilient force of the spring 141 causes the positioning block 133.
Are not separated from the centering block 123. Thereby, regardless of the movement of the centering block 123, the position of the positioning block 133 indicating the material origin does not change, so that the material origin can always be matched with the machine origin. At the same time, centering of the pipe W can be performed.

With reference to FIG.
The centering operation by the positioning device 121 will be described.

First, the positioning block pushing / pulling cylinder 143 is turned off (step S14), and the positioning block 133 is pushed out by the force of the spring 141 (step S14).
15). The positioning block 133 moves forward while being guided by the bush 137 (step S16), and presses the pipe W against the positioning block 133 to set a temporary set (step S17).

Subsequently, the centering block pushing / pulling cylinder 129 is turned on (step S18), and the shaft 12
The centering block 123 is moved forward through the step 5 (step S19). As a result, the tip of the centering block 123 enters the inside of the pipe W, and the positioning block 133 is pushed back. However, the positioning block 133 is pressed against the groove 131 of the centering block 123 by the force of the spring 141 and does not separate from the centering block 123. (Step S20).

In this way, the centering of the pipe W is performed, and at the same time, when the setting at the material origin is completed (step S
21), the positioning block pushing / pulling cylinder 143 is turned on (step S22), and the positioning block 13 is turned on.
3 is retracted (step S23), and the centering block pushing / pulling cylinder 129 is turned off (step S2).
4), the centering block 123 is retracted (step S2)
5) Laser processing is performed (step S26).

Next, the supply operation of the pipe W by the pipe supply device 1 described above will be described with reference to FIG.

First, the pipes W are set on the pipe supply shelf 21 (step S27), and the pipe stoppers 23 are operated to supply the pipes W one by one to the pipe conveyor 25 (step S28). 25, the setting of the pipe W is completed (step S29). Then
The servo motor 37 is driven to rotate (step S30),
The pipe W is supplied to the index device 17 by moving the pipe pushing block 29 (step S3).
1). The pipe position signal detected by the pipe position detection sensor 19 is fed back to the servo motor 37 (step S32), and the servo motor 37 is rotated by a predetermined feed amount based on the fed back position signal (step S33), and indexed. The pipe W is clamped by the chuck 89 of the device 17 (step S34).

The pipe W is rotated and indexed to a desired position by the index device 17, and laser processing such as drilling is performed (step S35). When the processing is completed, the index device 17 is rotated to a 45-degree position (step S35). In step S36, the chuck 89 is unclamped (step S37), and the pipe W is dropped and discharged from the opening 91 of the chuck 89 (step S38).

From the above results, since the pipe W can be automatically supplied to the laser beam machine 3 and the center of the pipe W can be securely held by centering the pipe W, accurate processing can be performed. .

The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes. In the present embodiment, a pipe has been described as an example of a bar, but a rod of Muku may be used.

[0061]

As described above, in the bar supply device of the laser beam machine according to the first aspect of the present invention, the bars placed on the bar supply shelf are individually removed by the bar removal device. It is supplied to the transporter, and is carried into the index device provided adjacent to the laser processing machine main body by the bar transporter, so that clamping and rotation indexing are performed,
The loading and setting of the bars can be performed automatically, and no trouble is required for the setup.

In the bar supply device for a laser beam machine according to the second aspect of the present invention, one end of the conveyed bar is rotatably clamped by the drive side index and the other end is rotatably clamped by the driven side index. You.
The drive side index and the driven side index can reciprocate in the loading direction, and the rotation driving force of the drive motor is transmitted by the transmission device penetrating both indexes, so that the rotation indexing of the bar is performed in synchronization. Can be.

In the bar feeder for a laser beam machine according to the third aspect of the present invention, the unit frame in which the drive side index and the driven side index are provided so as to be able to approach and separate from each other is reciprocally movable in the direction of loading the bar. By hitting the abutment provided on this unit frame with the positioning stopper of the laser beam machine, the origin of the material and the origin of the machine can be matched, so that the setup time can be shortened and accurate machining can be performed. it can.

In the bar supply device for a laser beam machine according to the fourth aspect of the present invention, the bar clamped by the chuck is driven by rotating a part or all of a plurality of rollers provided on the inner surface of the chuck. Since a desired amount is conveyed, constant feeding is possible even for a long bar.
Further, when the sheet is not conveyed, the roller is fixed and does not rotate, so that the rod is fixed, so that accurate processing can be performed.

In the method of transporting a bar according to the present invention,
The drive roller and the driven roller are provided so as to protrude from the inner surface of the chuck. Even in the clamped state, the drive roller can be rotated to drive the rod by a desired amount, so that a long rod can be transported. Constant feed is possible even for materials. Further, when the sheet is not conveyed, the roller is fixed and does not rotate, so that the rod is fixed, so that accurate processing can be performed.

In the bar centering / positioning device according to the sixth aspect of the present invention, for example, a pipe as a bar is pushed into a groove provided on a side surface of the centering block by a positioning block driving device. The tip of the conical centering block is pressed into the inside of one end of the pipe in this state by abutting the positioning block indicating the material origin, so that the centering of the pipe and the setting of the origin can be performed simultaneously. As a result, the working efficiency can be improved. In addition,
When the conical centering block is pushed into the pipe, the positioning block retreats. However, this positioning block is always pressed against the centering block during positioning, and therefore does not separate from the centering block.

In the bar centering / positioning method according to the seventh aspect of the present invention, for example, one end of a pipe, which is a bar, is brought into contact with a positioning block indicating the material origin, and is set at the material origin, and the leading end, which is the center, is set. Since the conical centering block indicating the position where the center of the pipe is to be aligned is pushed into one end of the pipe for centering, it is possible to simultaneously perform origin positioning and centering. As a result, the working efficiency can be improved. When the conical centering block is pushed into the pipe, the positioning block retreats, but this positioning block does not separate from the centering block.

According to the eighth aspect of the present invention, there is provided a bar processing method,
During processing, the indexing device rotates and indexes the bar to be processed, and after processing, the indexing device is rotated to the position where the opening of the air chuck faces downward, the air chuck is opened and the processed bar is discharged. Therefore, the processed bar can be automatically and easily discharged.

[Brief description of the drawings]

FIG. 1 is a front view showing a pipe supply device in a laser beam machine according to the present invention.

FIG. 2 is a plan view seen from a direction II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a configuration diagram showing a pipe transporter.

FIG. 5 is a front view showing the index device.

FIG. 6 is a front view of a drive-side index as viewed from a direction VI in FIG. 5;

FIG. 7 is a front view of a pipe supply device of the air chuck unit.

FIG. 8 is a flowchart showing a supply operation by the pipe supply device of FIG. 7;

FIG. 9 is a configuration diagram showing a centering / positioning device.

FIG. 10 is a plan view seen from the X direction in FIG. 9;

FIG. 11 is a flowchart showing a centering / positioning operation.

FIG. 12 is a flowchart showing a pipe machining operation.

FIG. 13 is a front view showing a conventional index device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pipe supply apparatus (bar supply apparatus) 3 Laser processing machine 17 Indexing device 21 Pipe supply shelf (bar supply shelf) 23 Pipe stopper (bar take-out apparatus) 25 Pipe transport machine (bar supply material) 41 Unit frame 43 Drive side index 45 Follower side index 53 Ball spline 61 Servo motor (Drive motor) 69 Positioning stopper 89 Chuck 99 Drive roller 101 Follower roller 115 Rotary shaft (Drive device) 121 Centering / positioning device 123 Centering block 129 Pushing centering block Pulling cylinder (centering block driving device) 133 Positioning block 143 Positioning block pushing / pulling cylinder (positioning block driving device) W Pipe

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B23Q 16/06 B23Q 16/06

Claims (8)

[Claims] 1. A bar supply shelf on which a plurality of bars as workpieces are placed, a bar removing device for removing bars one by one from the bars placed on the bar supply shelf, A bar transporter provided in one side of the bar supply shelf in the transport direction of the bar and carrying the supplied bar, and a bar transporter provided adjacent to the laser processing machine main body and loaded by the bar transporter. An indexing device that clamps the bar so as to perform a laser processing at a desired position of the formed bar and rotates and indexes the bar by a predetermined angle. 2. A drive-side index which is rotatably indexed at one end to rotatably index a bar as a workpiece, and which is supported so as to be reciprocally movable in a loading direction of the bar. A driven index which rotatably holds the other end of the bar and is reciprocally supported in the loading direction of the bar; and a drive index and a driven index which are connected to each other so as to approach / separate from each other. 2. The rod feeder for a laser beam machine according to claim 1, further comprising: a transmission device for transmitting the rotational driving force; and a drive motor for driving the transmission device to rotate. 3. A unit frame that supports the drive-side index and the driven-side index so that they can approach and separate from each other and that can reciprocate as a whole in the direction of loading the bars, and a positioning stopper provided in the laser processing machine. 3. An abutment which is provided on the unit frame so that the material origin of the bar can coincide with the mechanical origin of the laser beam machine when the frame is abutted. Bar feeder in laser processing machine. 4. A plurality of rollers for carrying in the bar, and a part or all of the plurality of rollers are rotated and non-loaded while the bar is carried in, on an inner surface of a chuck for clamping the bar in the index device. 3. A bar supply device for a laser beam machine according to claim 1, further comprising: a drive device for fixing said plurality of rollers. 5. An indexing apparatus wherein a bar is conveyably supported by a driving roller and a driven roller provided on an inner surface of a chuck for clamping the bar, and the bar is conveyed by a desired amount during the bar conveyance by driving the driving roller. Transport the material,
A bar conveying method, wherein the driving roller is stopped when the bar is not conveyed to prevent the bar from being conveyed. 6. A centering block whose tip has a conical shape to indicate the center of conveyance and has a groove along the side surface of the conical shape, and the centering block is supported so as to be reciprocally movable in the conveying direction of the bar. A centering block driving device,
A positioning block that indicates the material origin and whose tip engages with the groove of the centering block; and at least during positioning, always pushes the positioning block into the groove of the centering block at the material origin position in a direction orthogonal to the bar-conveying direction. And a positioning block driving device to be attached. 7. An end of the loaded bar is brought into contact with a positioning block movable in a direction orthogonal to the loading direction at a material origin position, and a conical centering block indicating a transport center is provided on the bar. Pressing inside one end, retreating the positioning block in a state where it is not separated from the centering block as the centering block advances,
A method for centering and positioning a bar. 8. A bar material is clamped by an air chuck of an index device provided adjacent to a laser beam machine.
The indexing device rotates and indexes to a desired position to perform laser processing, and the indexing device rotates the opening of the air chuck so as to face a lower discharge direction, and opens the air chuck to process the rod material. Discharging a bar.