TW201321110A - Automatic programming device and automatic programming method for laser processing machine, and laser processing system - Google Patents

Abstract

An automatic programming device (9) generates an operation program for controlling the operation of a laser processing machine using square pipe shape data and product shape data stored in a storage means. When a processing program is created for a case in which a product is obtained by cutting each face of the square pipe and cutting in a direction that is inclined at a prescribed angle with respect to the axial direction of the pipe, the programming device lays out a processing trajectory where a cutting process is performed on a developed diagram wherein the square pipe is laid out on a given straight line parallel to the axial direction of the square pipe. The programming device is equipped with a processing trajectory changing means which, when the processing trajectory in the direction perpendicular to the axial direction of the member being processed protrudes toward the product-shape side in the developed diagram wherein the processing trajectory has been laid out, changes this protruding processing trajectory so as to shorten the trajectory by a prescribed length.

Description

Automatic programming device and automatic programming method for laser processing machine and laser processing system

The present invention relates to an automatic programming device and an automatic programming method for a laser processing machine, and a laser processing system, and more particularly to: by a laser processing machine, a square tube is formed with respect to an axis of the square tube When the inclined shape is processed, the automatic programming device, the automatic programming method, and the laser processing system that can prevent the machining process from being defective can be prevented.

Fig. 8 is a view showing the configuration of a general laser processing machine.

As shown in Fig. 8, the laser processing machine 1 grips the workpiece 5 by the chuck 3, and irradiates the workpiece 5 with a laser in a predetermined order by the laser head 7, and performs the workpiece. 5 cutting processing, etc. Further, the laser processing machine 1 operates in accordance with a drive signal converted by the NC device in accordance with a program created by the automatic programming device.

Further, in the above-described laser processing machine 1, when the workpiece 5 is a square tube having a corner portion in its cross section, and the square tube 5 is cut at a predetermined slit, there are the following two methods. In other words, the first processing method is a method in which the square tube is rotated while the square tube is rotated, and the corner portion (corner portion) of the other tube is processed. The second processing method is the corner portion of the opposite tube. A method of processing the square tube in a rotational manner.

Fig. 9 is a front elevational view showing a second processing method in which the square tube of the square section is not rotated in the corner portion in the prior art.

That is, in the case of the second processing method described above, first, as shown in FIG. 9 ( In the case of a), the laser beam is irradiated from the left end to the right end of the upper surface A viewed from the front surface of the square tube 5, and the laser beam 7 is moved, and the upper surface A of the opposing pipe 5 is cut.

Next, as shown in Fig. 9(b), the laser head 7 is moved upward, and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow by the tube rotating device, as shown in Fig. 9(c). When the surface B becomes the upper surface, the rotation is stopped, the laser head 7 is moved downward to the irradiation position, and the laser beam is irradiated from the left end to the right end of the upper surface B to move the laser head 7, and the upper surface B of the opposite tube 5 is performed. Cut processing.

Similarly, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in Fig. 9(d), when the surface C becomes the upper surface, the rotation is stopped, so that the laser head is turned off. 7 moves downward to the irradiation position, and irradiates the laser from the left end to the right end of the upper surface C to move the laser head 7, and the upper surface C of the opposite pipe 5 is cut, and then the laser head 7 is moved upward. The square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in Fig. 9(e), when the surface D becomes the upper surface, the rotation is stopped, and then the laser head 7 is moved downward to the irradiation position, and from above. The left end of the D is irradiated with a laser to the right end to move the laser head 7, and the upper surface D of the other pipe 5 is cut.

In this way, when the second processing method is performed by the above-described conventional automatic programming, it is implemented in a manner in which the opposite pipe 5 is cut.

Further, the gripping mechanism, the rotating mechanism, and the centering mechanism of the square tube 5 are described in the following patent documents.

In the related art, for example, the following documents are known (patent document: Japanese Laid-Open Patent Publication No. Hei 10-235495, No. 2004-167577).

However, in the case where the second machining method is executed by the above-described conventional automatic programming, there is no problem in the case where the cutting process is performed in the vertical direction with respect to the axis of the square pipe 5, but it is opposite to the square pipe 5 When the shaft is cut in the oblique direction instead of perpendicularly, the inside of the product shape is processed to cause a problem of poor processing.

In other words, according to the above-described conventional second processing method, for example, as shown in Fig. 10, the opposing pipe 5 is inclined in a direction inclined by a predetermined angle α (about 45 degrees in this example) with respect to the axial direction 5a thereof. When the cutting process is performed to obtain the product 5b having the shape shown in Fig. 10, the slits 5c1, 5c2 which are defective in processing are generated at the predetermined upper end portion at the cut portion of the product 5b.

Fig. 10 is an explanatory view showing a case where the opposing pipe 5 is cut in a direction inclined by a predetermined angle α with respect to the axial direction 5a thereof; and Fig. 11 is a case where the opposing pipe 5 is in the axial direction 5a with respect to the axial direction thereof A front view and a plan view of the second processing method when the cutting process is performed in a direction in which the predetermined angle α is inclined.

More specifically, as shown in the front view of Fig. 11(a), the laser beam is irradiated from the left end to the right end of the upper side A of the square tube 5 as viewed from the front surface. While the laser head 7 is moved, the upper surface A of the opposing pipe 5 is cut. Here, as shown in the plan view of Fig. 11(a), the slit A is cut into the upper surface A of the square tube 5.

Next, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in Fig. 11(b), when the surface B becomes the upper surface, the rotation is stopped, and the laser head 7 is turned toward Moving downward to the irradiation position, and irradiating the laser beam from the left end to the right end of the upper surface B with a predetermined angle α with respect to the axial direction 5a of the square tube 5, the laser head 7 is moved, and the upper surface B of the opposite tube 5 is performed. Cut processing. Here, as shown in the plan view of Fig. 11(b), the slit 5d is cut into the upper surface B of the square tube 5, but the slit 5c2 which is the surface A which is a defective processing remains on the upper surface B of the product 5b side.

Similarly, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in the front view of FIG. 11(c), when the surface C becomes the upper surface, the rotation is stopped, so that the The head 7 moves downward to the irradiation position, and the laser beam is irradiated from the left end to the right end of the upper surface C to move the laser head 7 to cut the upper surface C of the opposite pipe 5, as shown in Fig. 11 ( As shown in the top view of c), a slit 5e is cut into the upper surface C of the square tube 5.

Next, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in FIG. 11(d), when the surface D becomes the upper surface, the rotation is stopped, and then the laser head 7 is caused to rotate. Moving downward to the irradiation position, and irradiating the laser beam from the left end to the right end of the upper surface D with a predetermined angle α with respect to the axial direction 5a of the square tube 5, the laser head 7 is moved. The upper surface D of the other pipe 5 is cut. Here, as shown in the plan view of Fig. 11(d), the slit 5f is cut into the upper surface D of the square tube 5, but the slit 5c1 which is the surface A which is a defective processing remains on the upper surface D of the product 5b side.

Moreover, although the notch 5e of the surface C remains on the upper surface D, since it is not the side of the product 5b, it is not regarded as a processing defect.

When the cutting process is performed in the direction in which the opposing pipe 5 is inclined by a predetermined angle α with respect to the axial direction 5a by the second machining method, the above-described machining failure is caused.

Here, the present invention has been made in view of the above problems, and it is an object of the invention to provide a processing failure in which a processing by a laser processing machine in a shape inclined with respect to an axis of the square tube by a laser processing machine can be prevented. Automatic programming device and automatic programming method for processing programs and laser processing system.

In order to solve the above problems, the present invention is an automatic programming device for generating an operation program for controlling the operation of a laser processing machine using shape data and product shape data of a member to be processed stored in a memory means, and is characterized by When the workpiece is to be machined, the cutting process is performed on each of the faces, and the cutting process is performed in a direction inclined by a predetermined angle with respect to the axial direction of the workpiece to obtain a machining program. There are: using the above-mentioned processed member from the above memory means The shape data is an unfolded drawing forming means for developing the member to be developed in an arbitrary line parallel to the axial direction of the member to be processed, and using the shape information of the product from the memory means, and the workpiece is processed. In the developed view, the processing trajectory development means for developing the plurality of processing trajectories which are cut by the respective surfaces, and the developed trajectory of the processing trajectory are perpendicular to the axial direction of the workpiece When the machining path of the direction protrudes from the shape side of the product, the machining path changing means for changing the protruding machining path by a predetermined length is changed.

Another feature of the present invention is an automatic programming device for generating an operation program for controlling the operation of a laser processing machine using shape data and product shape data of a member to be processed memorized by a memory means, When the processing member performs cutting processing on the respective surfaces thereof and performs cutting processing in a direction inclined by a predetermined angle with respect to the axial direction to obtain a processing program for the product, the method includes: using the above-described memory from the memory means The shape data of the processed member is an unfolded image forming means for developing the member to be developed in an arbitrary line parallel to the axial direction of the member to be processed, and using the shape data of the product from the memory means. On the developed view of the workpiece, the machining trajectory development means for expanding the plurality of machining trajectories that are cut by the respective faces, and sequentially calculating: in the developed view of the machining trajectory An angle calculating means for arranging the angle of the processing track between the plurality of faces and the machining track of the adjacent surface on the product shape side, and determining whether the calculated angle is 180 degrees or more And when the determination result is 180 degrees or more, among the two machining trajectories from which the angle is calculated, the machining trajectory in the direction perpendicular to the axial direction of the workpiece is shortened by a predetermined thickness. Changed processing trajectory change means.

Another feature of the present invention is an automatic programming method for generating an action program for controlling the action of a laser processing machine using shape data and product shape data of a member to be processed memorized by a memory means, When the processing member performs cutting processing in a direction inclined by a predetermined angle with respect to the axial direction thereof to obtain a processing program for the product, the processing member is provided by using the above-described memory means by the development means. The shape data is obtained by expanding the above-described workpiece to form a developed image on an arbitrary straight line parallel to the axial direction of the workpiece, and using the shape information of the product from the memory means by means of the processing trajectory means. In the developed view of the workpiece, the step of expanding the machining trajectory of the cutting process and the angle calculation means are sequentially calculated: in the expanded view of the machining trajectory, in the plurality of faces The angle between the processing track of one of the processing tracks and the adjacent surface of the workpiece on the shape side of the product Process, and The determination means determines whether the calculated angle is 180 degrees or more, and if the determination result is 180 degrees or more by the machining trajectory changing means, the two machining trajectories of the angle are calculated. Among them, the processing locus in the direction perpendicular to the axial direction of the workpiece to be processed is changed by shortening a predetermined thickness.

Another feature of the present invention is that a laser processing system for performing laser processing of a workpiece is provided with a laser processing machine for performing laser processing of a workpiece, and a memory member to be processed. The memory device of the shape data and the shape data of the product, and the shape data and the shape data of the workpiece to be processed by the memory means, to form an automatic programming device for the processing program of the laser processing machine; the above automatic programming device When the machining tool is formed by cutting the workpiece in a direction inclined by a predetermined angle with respect to the axial direction thereof, the machining tool is formed by using the shape of the workpiece to be processed from the memory means. The material is formed by expanding the above-mentioned workpiece to form a development view of the developed image, and using the shape data of the product from the memory means, on the arbitrary line parallel to the axial direction of the workpiece to be processed, On the unfolding map, the machining trajectory in which the machining trajectory of the cutting process is unfolded is unfolded. Section, and calculates in sequence: in the trajectory of the machining has been expanded in FIG expanded An angle calculating means for arranging the angle of the processing track between the plurality of faces and the machining track of the adjacent surface on the product shape side, and determining whether the calculated angle is 180 degrees or more And when the determination result is 180 degrees or more, among the two machining trajectories from which the angle is calculated, the machining trajectory in the direction perpendicular to the axial direction of the workpiece is shortened by a predetermined thickness. The changed machining path changing means, wherein the laser processing machine performs the control of each part by the control means in accordance with the machining program, and follows the machining path that has been developed on the development view, and is shortened by The machining trajectory after the predetermined thickness is changed to perform the cutting process of the workpiece.

Hereinafter, embodiments for carrying out the invention will be described using the drawings.

Fig. 1 is an explanatory view showing the outline of a laser processing system embodying the present invention.

As shown in Fig. 1, the laser processing system 10 has a laser processing machine 1 using a product shape data in a database (memory means) 11 and data of a workpiece (square tube 5). Automatic programming device for the processing program 9.

Further, the NC data formed by the automatic programming device 9 to create a predetermined processing program is converted to the driving data by the NC device 13 and sent to the laser processing machine 1 by the laser processing machine 1. Device 2 The laser processing of the workpiece (the square tube 5 having the corner portion in the cross section) is performed by performing control of each unit in accordance with the driving data. Further, in the above-described database 11, the product shape data obtained by the processing and the material of the workpiece (square tube 5) are accumulated.

Fig. 2 is a block diagram showing a schematic configuration of the automatic programming device 9 shown in Fig. 1.

As shown in Fig. 2, the automatic programming device 9 is composed of a computer, and includes a CPU 15 to which a ROM 17 and a RAM 19 are connected. Further, the CPU 15 is connected to an input device 21 such as a keyboard and a display device 23 such as a display. Further, a database 11 is connected to the CPU 15.

Further, in the automatic programming device 9, the CPU 15 uses the product shape data in the database 11 and the material of the workpiece (square tube 5) in accordance with an instruction from the operator from the input device 21, and is taken from The computer program of the ROM 17 uses the RAM 19 to create a processing program for the laser processing machine 1 to be described later.

Next, the processing operation and configuration of the laser processing machine 1 shown in Fig. 1 will be described.

Fig. 3 is a detailed view of the workpiece supporting device in the laser processing machine 1 shown in Fig. 1, (a) is a side view on the side of the locking seat, and (b) is a view from the direction of the arrow AA. (c) is a side view of the top side of the top, (d) is a view from the direction of the BB arrow; and FIG. 4 is a workpiece supporting device composed of a retaining seat and a top seat The external view, (a) is a side view, and (b) is a side view showing a state in which a workpiece is gripped (grabbed).

As shown in FIG. 3 and FIG. 4, for example, in the case where the surface of the tubular workpiece (square tube) 5 having a square section is cut by a laser processing machine, the hollow end of one end of the workpiece 5 is processed. Inserted into the two claws of the locking seat 100 or the protruding ends of the opposing claw portions 101a, 101b or 101c, 101d of the four-claw chuck and protruding from the axis S by equidistances L, L The locking members 102, 102 are on. Then, one end of the workpiece 5 is fixedly held by scrolling the opposing claw portions, for example, 101a and 101b, so as to be separated from each other and widened.

On the other hand, as shown in Fig. 4(b), by rotating the handle 204 of the top core seat 200, the top core seat 200 is moved in a slight stroke toward the direction of the arrow 5a, and the position is centered on the axis position. After the engagement portion of the abutting pressing member 201 formed by the triangular-shaped plate body abuts against the hollow portion of the other end of the workpiece 5, the centering and clamping operation of the workpiece 5 is completed.

Next, in order to adjust the processing portion or the processed surface of the workpiece 5 to the laser processing head 7 so as to be in an appropriate corresponding posture such as a horizontal level, the analog sensor (not shown) provided in the processing head 7 is provided. The mounting angle of the workpiece 5 is detected, and then the posture control of the relative position of the workpiece 5 and the machining head 7 is performed with an instruction from the control device 2. Further, the length of the periphery of each of the faces is determined by an analog sensor, and the desired face position is controlled to the upper side.

Then, under the control of the control device 2, the machining head 5 is irradiated with the laser beam by the machining head 7 in a state where the machining member 5 is rotated and stopped by the servo motor in the indexing device 104, and the circumferential surface is cut or the like. At this time, too The machining head 7 can be moved along the machining path to be described later, and the square pipe 5 can be cut in a direction inclined by a predetermined angle α with respect to the axial direction (X-axis) 5a as shown in Fig. 6 . The way of processing is implemented.

Further, in the control device 2, drive data generated by a predetermined machining program created by the automatic programming device 9 is transmitted by the NC device 13, and laser processing control is performed in accordance with the drive data.

Further, since the center portion surrounded by the claw portion 101 of the chuck 3 on the side of the locking seat 100 is positioned on the extension of the axial center and the hole portion is formed, it can be pushed against the abutment seat 200. The cylindrical body 202 of the axial center portion of the central portion of the pressing member 201 is inserted into a rod-like body capable of supporting the workpiece 5 to be processed. Further, the rod-shaped body can be used in a preparation stage before processing or an additional operation stage in which the workpiece 5 is removed after the processing is completed.

Next, referring to Fig. 5, the machining program creation operation of the automatic programming device 9 shown in Figs. 1 and 2 will be described.

Fig. 5 is a flow chart showing the operation of the automatic programming device.

Here, as shown in Fig. 6(a), the square tube 5 having a square cross section is cut in a direction inclined by a predetermined angle α with respect to the axial direction (X axis) 5a to obtain a product. The machining program creation operation at the time of 5b will be described.

Fig. 6 is a perspective view and a development view when the product 5b is taken in a direction in which the axial direction (X-axis) 5a of the square tube 5 is inclined by a predetermined angle α to obtain the product 5b.

First, in step 301 of Fig. 5, the square tube 5 is unfolded by an arbitrary straight line 5g parallel to the X-axis on the square tube 5. Here, the line 5g, as shown in Figure 7 (a) is an outline of the boundary line between the surface C and the surface D located on the outer circumference of the square tube 5, and is an outer shape in which the surface C and the surface D are cut and expanded by the straight line 5g.

That is, the CPU 15 of the automatic programming device 9 uses the shape data of the workpiece (square tube 5) from the database 11, and uses the RAM 19 in accordance with the computer program taken from the ROM 17, and is formed in parallel with the square tube 5. An unfolded view of the square tube 5 is developed by an arbitrary straight line 5g of the X-axis. Here, the CPU 15 is for achieving a function of expanding the development of the square tube 5 by an arbitrary straight line 5g parallel to the X-axis on the square tube 5.

Next, in step 303, the first to fourth processing trajectories 5c to 5f that perform the cutting process are developed on the developed view of the square tube 5. In other words, the CPU 15 of the automatic programming device 9 uses the shape data of the product from the database 11 and the shape data of the workpiece (the square tube 5), and uses the RAM 19 in accordance with the computer program taken from the ROM 17, and the execution is performed. The first to fourth machining trajectories 5c to 5f of the breaking process are developed on the developed view of the square pipe 5. Thereby, an expanded view as shown in Fig. 6(b) is obtained.

Further, the first to fourth processing trajectories 5c to 5f are processing trajectories of the first to fourth surfaces A to D.

Here, as shown in Fig. 6(b), the first processing locus 5c has its both ends projecting from the product shape 5b side. The protruding portions 5c1, 5c2 appear as processing defects of the slit 5y as shown in Fig. 10.

Here, the CPU 15 is used to realize that the machining trajectory 5c to 5f that performs the cutting process is developed on the development map of the square pipe 5 The function of the segment.

Further, in the developed view of Fig. 6(b), the boundary line 5g between the surface C and the surface D on the outer circumference of the square tube 5 shown in Fig. 7(a), and the surface A and the surface B on the outer circumference are shown in Fig. 7(a). The boundary line 5h, the boundary line 5i between the outer surface B and the surface C, and the boundary line 5j between the outer surface D and the surface A are respectively a small chain line in the developed view of Fig. 6(b) To represent.

Further, in the developed view of Fig. 6(b), the boundary line 5k between the surface C and the surface D on the inner circumference of the square tube 5 shown in Fig. 7(a), and the surface A on the inner circumference are The boundary line 51 of the surface B, the boundary line 5m between the surface B and the surface C on the inner circumference, and the boundary line 5n between the surface D and the surface A on the inner circumference are respectively indicated by broken lines in the developed view of Fig. 6(b) To represent.

Next, in step 305, the angles of the processing trajectories 5c to 5f of the surface A to the surface D located in the development view and the processing trajectories of the adjacent surfaces are placed on the side of the product shape (angle CD, angle) DA, angle AB, angle BC). In other words, the CPU 15 of the automatic programming device 9 sequentially calculates the processing of one of the adjacent tracks from the processing tracks 5c to 5f of the faces A to D from the developed view shown in Fig. 6(b). The angle of the trajectory sandwiched on the shape side of the product (angle CD, angle DA, angle AB, angle BC). Here, the CPU 15 is a function for calculating an angle calculation means for calculating the angle CD, the angle DA, the angle AB, and the angle BC in order.

Next, in step 307, it is determined whether the angle CD, the angle DA, the angle AB, and the angle BC are 180 degrees or more. In the case of 180 degrees or more, in step 309, among the two machining trajectories whose angles have been calculated, the X-axis direction (axis direction 5a of the workpiece to be processed) The processing trajectory in the vertical direction is shortened by a predetermined thickness. If it is not 180 degrees or more, in step 311, the change of the machining path is not performed. Here, the CPU 15 is a function for achieving the angle determination means and the processing trajectory changing means.

That is, when the processing of the above steps 307 and 309 is described in the specific example shown in FIG. 6, as shown in FIG. 6(c), the CPU 15 of the automatic programming device 9 calculates the processing locus of the surface C. When the angle CD of the product shape side of the processing locus 5f of the surface D of the surface D is not 180 degrees or more, it is not necessary to change the processing locus. Further, when the angle D of the machining path 5f of the surface D and the product shape side of the machining path 5c of the surface A is calculated to be 180 degrees or more, the two machining trajectories 5f and 5c are perpendicular to the X-axis direction. One end of the processing locus 5c in the direction is changed by shortening the thickness of the square tube 5. Thereby, the first processing locus 5c protruding from the product shape side is changed by shortening by a predetermined length, and the portion 5c1 from which the first processing locus 5c protrudes is removed.

Similarly, the CPU 15 of the automatic programming device 9 is 180 degrees or more when calculating the angle AB of the machining path 5c of the surface A and the machining shape 5d of the surface B, so that the two machining tracks 5c and 5d are In the middle, the other end of the machining locus 5c in the direction perpendicular to the X-axis direction is changed by shortening the thickness of the square tube 5. Thereby, the first processing locus 5c protruding from the product shape side is changed by a predetermined length, and the portion 5c2 from which the first processing locus 5c protrudes is removed.

Further, when calculating the angle BC between the processing locus 5d of the surface B and the product shape side of the processing locus 5e of the surface C, since it is not 180 degrees or more, There is no need to change the machining path.

In this manner, by changing the processing locus 5c of the surface A by a predetermined length, the processing locus 5c' of the plane A as shown in Fig. 6(c) is obtained. It can be seen from the processing locus 5c' of the surface A shown in Fig. 6(c) that the portions 5c1 and 5c2 which are protruded from the both ends of the first processing locus 5c toward the product shape 5b side can be eliminated, thereby eliminating the cause of the processing failure. .

Next, the machining operation executed by the laser processing machine 1 in accordance with the machining program created by the automatic programming device 9 shown in Figs. 5 and 6 will be described with reference to Fig. 7.

Fig. 7 is a front view and a plan view showing a machining operation performed by the laser processing machine 1 in accordance with a machining program prepared in accordance with Figs. 5 and 6.

First, the NC program is generated by the machining program created by the automatic programming device 9, and the NC data is converted into drive data by the NC device 13 and then transmitted to the laser processing machine 1, and then controlled by the laser processing machine 1. 2 According to the driving data, the laser cutting process of the square tube 5 of the section square is performed as shown below.

First, as shown in Fig. 7(a), the upper surface A viewed in the front shape of the square tube 5 is as described above because it becomes a processing locus 5c' which reduces the thickness of the square tube 5 at both ends. The processing track 5c' which shortens the thickness of the square tube 5 at both ends is irradiated with the laser from the left side to the right side, and the laser beam 7 is moved to cut the upper surface A of the processing square tube 5.

Therefore, as shown in the plan view, the upper surface A of the square pipe 5 is cut into a slit 5c' in which the both ends thereof are shortened by the thickness of the square tube 5.

Next, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in Fig. 7(b), when the surface B becomes the upper surface, the rotation is stopped, and the square tube 5 is used. The upper surface B viewed by the front shape is moved to the irradiation position by the processing trajectory 5d as described above, and is sandwiched by the machining trajectory 5d at a predetermined angle α with respect to the axial direction 5a of the square pipe 5. The laser beam 7 is irradiated from the left end to the right end of the upper side to move the laser head 7, and the upper surface B of the other pipe 5 is cut. Here, as shown in the plan view, a slit 5d is cut into the upper surface B of the square tube 5.

Further, here, since the slit of the upper surface A has the slit 5c' having the thickness of the square tube 5 reduced at both ends thereof, the slit of the upper surface A can be solved, and the problem of remaining on the upper surface B as a defective processing can be solved. .

Similarly, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in Fig. 7(c), when the surface C becomes the upper surface, the rotation is stopped, and the square tube 5 is stopped. The upper surface C viewed by the front surface shape is moved to the irradiation position by the processing trajectory 5e as described above, and the laser beam is irradiated from the left end to the right end of the upper surface C along the processing trajectory 5e. The shot 7 moves, and the upper surface C of the other tube 5 is cut.

Next, the laser head 7 is moved upward and the square tube 5 is rotated 90 degrees about the axis in the direction of the arrow. As shown in FIG. 7(d), when the surface D becomes the upper surface, the rotation is stopped, and the square tube 5 is used. The upper surface D viewed from the front shape is moved to the irradiation position by the processing trajectory 5f as described above, and along the processing trajectory 5f in the axial direction with respect to the square tube 5 5a has a predetermined angle α. The laser beam is irradiated from the left end to the right end of the upper surface D, and the laser beam 7 is moved, and the upper surface D of the opposing pipe 5 is cut.

Here, as shown in the plan view, since the slit of the upper surface A has the slit 5c' having the thickness of the square tube 5 reduced at both ends thereof, the slit of the upper surface A can be solved, and it remains as a defective processing. D problem. Further, although the slit located on the upper surface C remains on the upper surface D, it does not remain on the product side, so that it does not become a problem.

According to the present embodiment, when the cutting process is performed in the direction in which the opposing pipe 5 is inclined by a predetermined angle α with respect to the axial direction 5a by the second machining method, the above-described manner can be automatically prevented as described above. A lack of processing failure occurs on the product side.

The present invention is not limited to the embodiments of the invention described above, and can be implemented in other forms by appropriate modifications.

For example, in the above-described embodiment, a member having a square shape having four corners in cross section is used as the member to be processed, but the present invention is not limited thereto, and may be used in a section having four or more angles. The member of the cross-sectional shape may also be used in a triangular shape having a cross section having three corners, a concave shape having a cross section having two corners, or a section having one corner in the cross section. L-shaped member.

[Industrial availability]

According to the present invention, in the second processing method in which the square tube portion of the opposite tube is surface-machined without rotating the square tube, even if the axis of the square tube is to be inclined in a non-vertical direction When cutting the processing It can also be used to prevent the processing program from being processed into the shape of the product.

1‧‧ ‧ laser processing machine

2‧‧‧Control device

3‧‧‧ chuck

5‧‧‧Processed components (square tubes)

5a‧‧‧Axis direction of the machined member (axis direction of the square tube)

5b‧‧‧Products

5c, 5d, 5e, 5f, 5c'‧‧‧ machining track (cut)

5c1, 5c2‧‧‧ incision

5g~5n‧‧‧ junction line

7‧‧‧Ray head

9‧‧‧Automatic programming device

10‧‧‧Laser processing system

11‧‧‧Database (memory means)

13‧‧‧NC device

15‧‧‧CPU

17‧‧‧ROM

19‧‧‧RAM

21‧‧‧ Input device

23‧‧‧Display device

100‧‧‧ card seat

102‧‧‧Clocking components

101a, 101b, 101c, 101d‧‧‧ claws

104‧‧‧ Indexing device

200‧‧‧Top seat

201‧‧‧ Pushing members

204‧‧‧Handle

All sides of the A~D‧‧‧ square tube

S‧‧‧ Axis

Α‧‧‧ predetermined angle inclined relative to the axis of the square tube

Fig. 1 is an explanatory view showing the outline of a laser processing system embodying the present invention.

Fig. 2 is a schematic configuration diagram of the automatic programming device 9 shown in Fig. 1.

Fig. 3 is a detailed view of the workpiece supporting device in the laser processing machine 1 shown in Fig. 1.

Fig. 4 is an external view of a workpiece supporting device composed of a locking seat and a top core.

Fig. 5 is a flow chart showing the operation of the automatic programming device 9.

FIG. 6 is a perspective view and a development view of the case where the product 5b is obtained by cutting in a direction inclined by a predetermined angle α with respect to the axial direction (X-axis) 5a of the square pipe 5.

Fig. 7 is a front view and a plan explanatory view of a machining operation performed by the laser processing machine 1 in accordance with a machining program prepared as shown in Figs. 5 and 6.

Fig. 8 is a view showing the configuration of a general laser processing machine.

Fig. 9 is a front elevational view showing a second processing method in which the opposing tube 5 is subjected to surface processing without rotating the corner portion in the prior art.

Figure 10 is a prior art in which the square tube 5 is in relation to its axis A perspective explanatory view when the cutting direction is performed in a direction in which the direction 5a is inclined by a predetermined angle α.

Fig. 11 is a front view and a plan view showing a second processing method in the case where the square tube 5 is cut in a direction inclined by a predetermined angle α with respect to the axial direction 5a in the prior art.

Claims (10)

An automatic programming device is an automatic programming device for generating an action program for controlling the action of a laser processing machine by using shape data and product shape data of a member to be processed memorized by a memory means, characterized in that: When the workpiece is cut, and the cutting process is performed on each of the faces of the workpiece, and the cutting process is performed in a direction inclined by a predetermined angle with respect to the axial direction of the workpiece to obtain a machining program, the product is used: The shape data of the workpiece to be processed from the memory means is a development drawing means for developing the workpiece to form an unfolded image on an arbitrary line parallel to the axial direction of the workpiece, and using the memory means The product shape data, the processing trajectory development means for developing the plurality of processing trajectories that are cut by the respective surfaces on the developed view of the workpiece, and the developed view of the trajectory The machining path perpendicular to the axial direction of the workpiece to be processed will stand out When the case where the shape of the side product, the machining path by projecting a predetermined length to shorten the processing path to be changed for changing means. The automatic programming device according to claim 1, wherein the laser processing machine is a processing track that has been developed along the development map according to the processing program, and is shortened by The machining trajectory after the predetermined length is changed, and the cutting process of the workpiece is performed. The automatic programming device according to claim 1 or 2, wherein the predetermined length is a length of a thickness of the workpiece to be processed; and the arbitrary straight line is a boundary line between the surface and the surface. An automatic programming device is an automatic programming device for generating an action program for controlling the action of a laser processing machine by using shape data and product shape data of a member to be processed memorized by a memory means, characterized in that: When the workpiece is cut, and the cutting process is performed on each of the faces, and the cutting process is performed in a direction inclined by a predetermined angle with respect to the axial direction to obtain a processing program for the product, the memory member is used. The shape data of the member to be processed is an unfolded image forming means for developing the member to be developed in an arbitrary straight line parallel to the axial direction of the workpiece, and using the shape data of the product from the memory means In the developed view of the workpiece, the machining trajectory development means for expanding the plurality of machining trajectories that are cut by the respective surfaces, and sequentially calculating the expanded trajectory of the machining trajectory One of the processing tracks among the plurality of faces is sandwiched between the processing tracks of the adjacent faces The angle calculation means of the angle on the shape side and the determination means for determining whether or not the calculated angle is 180 degrees or more, and when the determination result is 180 degrees or more, the two machining trajectories of the angle are calculated. Among them, it will be in the axial direction with the above-mentioned workpiece A machining path changing means for changing the machining path in the vertical direction by shortening a predetermined thickness. The automatic programming device according to claim 4, wherein when the determination result is not 180 degrees or more, the processing track is not changed. The automatic programming device according to the fourth or fifth aspect of the invention, wherein, according to the processing program, the processing track that has been developed on the developed image is changed along the predetermined thickness. The subsequent machining trajectory performs cutting processing of the workpiece to be processed. The automatic programming device according to claim 4, wherein the predetermined thickness is a plate thickness of the workpiece to be processed; and the arbitrary straight line is a boundary line between the surface and the surface. An automatic programming method is an automatic programming method for generating an action program for controlling the action of a laser processing machine by using shape data and product shape data of a member to be processed memorized by a memory means, characterized in that: When the workpiece is processed in a direction in which the workpiece is cut in a direction inclined by a predetermined angle with respect to the axial direction thereof to obtain a product, the image forming means is used to use the above-described memory from the memory means. The shape data of the processed member is a step of developing the workpiece to form a developed view by an arbitrary straight line parallel to the axial direction of the workpiece, and a shape of the product from the memory means by means of a processing trajectory means The data will be cut off on the developed view of the above-mentioned workpiece The process of developing the machining trajectory and the calculation by the angle calculation means are sequentially calculated: in the developed view of the trajectory of the trajectory, one of the processing trajectories among the plurality of faces and the adjacent face a step of arranging the angle of the processing trajectory on the shape side of the product, and a step of determining whether the calculated angle is 180 degrees or more by the determination means, and the processing result changing means is 180 degrees or more In the case of the two machining trajectories in which the angle has been calculated, the machining trajectory in the direction perpendicular to the axial direction of the workpiece is changed by a predetermined thickness. A laser processing system is a laser processing system for performing laser processing of a workpiece, and is characterized in that: a laser processing machine for performing laser processing of a workpiece, and a memory The shape information of the processed member, the memory means of the shape data of the product, and the shape data and the shape data of the workpiece to be processed by the memory means are used to create an automatic programming device for the processing program of the laser processing machine, the above automatic The programming device is configured to use the above-described processing means from the above-described memory means when forming a processing program for cutting a product in a direction inclined by a predetermined angle with respect to the axial direction of the workpiece to be processed. Component shape data And an unfolded image forming means for developing the member to be developed in an arbitrary straight line parallel to the axial direction of the member to be processed, and using the shape data of the product from the memory means to expand the workpiece In the drawing, the machining trajectory development means for expanding the machining trajectory of the cutting process, and sequentially calculating: in the developed view of the machining trajectory, one of the machining trajectories among the plurality of faces When the angle calculation means for the angle of the processing path of the adjacent surface is sandwiched between the product shape side and the determination means for determining whether or not the calculated angle is 180 degrees or more, and when the determination result is 180 degrees or more, Among the two machining trajectories of the angle, the machining trajectory changing means that changes the machining trajectory in the direction perpendicular to the axial direction of the workpiece to be shortened by a predetermined thickness, the laser processing machine is According to the above processing program, the control device performs the control of each part along the plus that has been developed on the development map. Track, and along the processing path after a predetermined thickness to shorten changed to the above-described workpiece machining cutting member. The laser processing system according to claim 9, wherein the laser processing system is provided between the automatic programming device and the laser processing machine, and is provided for: Converting the NC data generated by the predetermined processing program of the device into the NC device transmitted by the laser processing machine and driving the driving data to the laser processing machine, and performing the driving data according to the driving device of the laser processing machine Control of each department.