JPS5862708A - Three-dimensional nc laser processing machine having numerical control computer with playback circuit - Google Patents

Abstract

PURPOSE:To perform processing with high accuracy, by forming an NC program of two-dimensional profile, scanning the remaining axis to a three-dimensional materials to be worked playing back the data and forming a three-dimensional profile. CONSTITUTION:First, a two-dimensional profile NC tape is formed and set to a numerical control computer, and a draw panel A is set to a prescribed position of a table 1 of a gate type NC processing machine. The surface of the draw panel is scanned with a tracer 18 movable toward Z direction fitted to a movable sliding frame 5 toward X and Y directions to form a three-dimensional profile NC tape. Through a new three-dimensional profile NC tape, a laser light is irradiated 12 to trim the draw panel. Further, the shape is checked and the result is fed back to a two-dinensional profile NC tape for the correction. The same operation as previous operations is repeated with a corrected tape and a three-dimensional profile NC tape obtained with a normal shape is taken as normal tape for highly accurate processing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nine-laser processing machine equipped with a two-axis tracer,
In particular, a tracer is activated by a two-dimensional profile NC program to detect a pattern in two axes of the workpiece, and this is play-packed into the above NC program to create a three-dimensional profile NC program. ◎ A laser processing machine is a processing machine equipped with a laser oscillator, and the laser beam emitted from the laser oscillator is focused by a condensing lens. It irradiates the workpiece and heat-treats that part.It is used, for example, when trimming a draw panel made of pressed metal plate.In this case, of course, the laser beam is irradiated to the condenser lens and the workpiece. The distance between the points is always kept constant so that the focus of the laser beam coincides with one point on the workpiece.
Therefore, when processing a workpiece, it is desirable to create a three-dimensional profile NC program in advance and operate the focusing lens using this program. It is extremely difficult to create a program directly, and even if a program could be created, the workpiece would not necessarily be formed exactly according to the design drawing, so this program would not be appropriate for the workpiece. Of course, there is a conventional method of attaching an actuating transformer sensor or air sensor to the laser beam irradiation nozzle, thereby maintaining a constant distance between the irradiation nozzle and the surface of the workpiece. This method is effective when the surface of the workpiece is close to a flat surface, but if the surface of the workpiece is sloped or uneven, the accuracy of the senna decreases significantly and it becomes difficult to maintain the specified spacing. is no longer maintained, making it virtually impossible to process.

The present invention has been made in view of the above points, and focuses on the fact that a two-dimensional fill NC program can be created relatively easily from a design drawing. is installed and first operated by a two-dimensional profile NC program based on the design drawing, a pattern in two-axis directions corresponding to the two-dimensional profile NC program is detected, and the results are converted into a two-dimensional profile NC program. A three-dimensional profile NC program is created by playing back the program, and the laser irradiation nozzle is operated based on this program to process the workpiece.

An embodiment of the present invention will be described below using a gate-type NC processing machine as an example. In the figure, 1 is a table, 2 is an underframe, 3 is a column, 4 is a beam, and 5 is a sliding frame. This processing machine, which forms the main part of the machine, is no different from ordinary machines of this type; 0 Then, the sliding frame 5 slides in the left-right direction (Y-axis direction) K along the clasp 4, the beam 4 slides up and down (Z-axis direction) along the support 3, and the table 1
slides back and forth (X-axis direction) along the underframe 2, and as a result, the sliding frame 5 moves three-dimensionally along the X%Y1 and two axes. Regarding the method by which these slide, see 4.
However, the present invention is not limited to 1, and to explain it using the sliding frame 5 as an example, a male butterfly shaft 6 is installed on the beam 4, and this is connected to a forward/reverse motor 7, while the sliding frame A male spiral 8 is formed on the beam 5, which is threadedly engaged with the male screw shaft 6, and slides left and right by driving the forward/reverse motor 7. Similarly, the beam 4 Forward/reverse motor 9
Therefore, the table 1 is slid by the forward/reverse motor W. Of course, these forward/reverse motors 7, 9, 10
Although not shown, they are driven by a combination machine according to a preset program. ◎ Mounting plates 11a and llb%lie are also attached to the sliding frame 7 so as to be able to move up and down, and each is irradiated with a laser beam. Nozzles ν, tracer, laser brocade, and high frequency spindle are installed. ◎ This irradiation nozzle U focuses the laser beam tube emitted from the laser oscillator body brocade, and is a so-called processing head, with a laser focusing lens inside. 14 is provided.◎ The figure shows a type in which assist gas is ejected from the tip of the nozzle, and the nozzle is funnel-shaped with a small hole in the tip. ,ζIt is formed so that the focused laser beam is irradiated from this and the assist gas is ejected.
In a processing machine configured in this way, the laser beam irradiated from the rib of the laser oscillator body placed near one processing machine is refracted using three reflecting mirrors 16 and 17 and guided to the irradiation nozzle ν. First, the first reflecting mirror is biased on a vertical line passing through the irradiation nozzle U, is attached to the sliding frame 5, and moves integrally with the irradiation nozzle U along the Y axis. passes through the first reflecting mirror 15, and the third reflecting mirror 17 passes through the second reflecting mirror 16. The laser oscillator main body L1 is provided at a point on a line parallel to the x, z, and axes, is attached to the support 3, and moves forward and backward together with the second reflecting mirror 16. Therefore, the third reflector 17
The inclination of the second reflecting mirror 16 is adjusted so as to reflect this light toward the first reflecting mirror 15, and the first reflecting mirror ``is directed toward the irradiation nozzle LIK.'' The inclination of the laser oscillator is adjusted so that the laser beam is reflected by the second reflector. The position shown here and the direction in which the laser beam is emitted do not necessarily have to be this way. It is sufficient to guide this to the second reflecting mirror 16K using a mirror, etc.) The key is to make sure that the laser beam is parallel to the X axis when it enters the second reflecting mirror. The tracer 18 detects the height of the surface of the workpiece in two axial directions and feeds it back to the Vr combiner, and operates the forward/reverse motors 7 and 10 to move the sliding frame. St
When the tracer 18 is moved in the X-axis and Y-axis directions, the beam 4t is moved up and down following the shape of the workpiece surface so that the tip of the tracer 18 is always in constant contact with the workpiece surface. As an example, the tracer 18 is equipped with a pressure sensor that detects the pressure pipe when its tip comes into contact with the surface of 9-. It is configured to notify the detection circuit and feed back to the forward/reverse motor 9 to count the rotation of the forward/reverse motor 9 so that the pressure is constant. In the evening, the 3D profile NO. is connected to the previous 2D profile NC program through the playback circuit prepared
It is converted into a program. Using this N and C program, which accurately corresponds to the shape of the workpiece, the laser beam irradiation nozzle 12t is operated using this NC program, and the workpiece is processed. This allows extremely accurate machining. The high-frequency spindle 19 processes the workpiece in place of the rape beam, and like the irradiation nozzle 12, it is operated according to the three-dimensional profile NC program, and can be replaced with other cutting machines. Needless to say.

As described in detail above, the present invention includes a laser beam irradiation nozzle, a tray, a high frequency spindle 19t- attached to the sliding frame of a three-dimensional NC processing machine equipped with a numerical bill counting combinator, and a playback system for the combinator. The circuit is ready! Then, a tracer 1at,- is created using a two-dimensional profile NC program to detect the gate tube in two axial directions of the workpiece, and this change is played back to the two-dimensional profile NC program to create a three-dimensional profile NC program. Therefore, it is possible to extremely easily create a three-dimensional profile yNc program that accurately corresponds to the shape of the workpiece. Because it can be processed, it is extremely efficient (L25- also has the advantage of being able to process with high precision.

[Brief explanation of the drawing]

There are nine figures showing an embodiment of the present invention. The first figure is a partially cutaway perspective view, and the second figure is a front view showing the main parts. Beam 5; sliding frame
6; male spiral 7; forward/reverse motor 8; female spiral 9; forward/reverse motor io; forward/reverse motor U; installation trLL2; irradiation nozzle opening; laser oscillator body 14; focusing yns 15; first reflecting mirror 16; Second reflecting mirror 17; third reflecting mirror
1 @; Tracer 19; High frequency spindle April 6, 1980 Haruki Shimada, Commissioner of the Japan Patent Office Indication of case 16 Patent Review No. 162300 of 1988 2, Title of invention Numerical bill counting converter 3 with play pack circuit, amendment Relationship with the Three-Dimensional NCL'-Zer Processing Incident Patent Applicant Address Address: Matoba, Shimizu-cho, Sunto-gun, Shizuoka Prefecture Name: Fuji Iron Works Co., Ltd. 4, Yuhito ``''1 Takahashi: i; lWm1ii Address: 2nd floor, Shin-Ximending Building, 2-7, Ximending-cho, Shizuoka City. 0 attachments] (1) ■ In the upper corner of the application form, write "A patent application pursuant to the current provisions of Section 9 of the Iris Article 9 of the Patent Law". l■
In the application, the following paragraph K "2: Number of inventions stated in the scope of claims 211" is added. ■ The paragraph after "2 Inventor" in the application is corrected as follows] 2. (3) The name of the invention is corrected to ``A three-dimensional NC processing machine equipped with a processing method using a grayback system and a numerical ms combinator with a playback circuit tV''. (3) Please submit the entire specification on a separate sheet for correction. Description, Title of the Invention Daiojima NC processing machine equipped with a playback processing method and a numerical counting combiator having a playpack circuit. Create a dimensional profile NC program, scan the remaining 16 directions using the above Nc program as the basic shape of the 3D shape of the workpiece or model, etc., and use the data to create the 2D profile above. Play back to the NC program and create a three-dimensional profile NC program,
A machining method based on the greyback method, which is characterized in that the workpiece material is then machined using this new three-dimensional profile NC program. -Numerical system WI! In a three-dimensional numerically controlled processing machine equipped with a combinator, a processing head such as a tracer and/or a laser beam irradiation nozzle and a high-frequency spindle is attached to one sliding frame. Direction of straight shape tube scanning 4 hours, and numerical value 111J
ml Combi 1 - The playbar is characterized in that it is equipped with a circuit that plays back the scanning results by the tracer to a two-dimensional profile NC program to create a three-dimensional profile NO program. Detailed Description of the Invention: A Daio Dimensional NC Processing Machine Equipped with a Numerical Counting Combination Crystal System - A Detailed Description of the Invention 'The present invention is a numerical steel manufacturing combination machine equipped with a play pack circuit.
Regarding a three-dimensional NC processing machine equipped with a three-dimensional NC processing machine, especially for a workpiece made of a three-dimensional shape pipe or its model, wrinkles, etc., a two-dimensional profile NC program is used as the basic shape of the calculation fill. An NC that performs scanning in one axis direction, plays back the data to the above two-dimensional profile NC program to create a three-dimensional profile NC program, and processes the workpiece based on this new three-dimensional profile NC program. Processing machines (related items) - A three-dimensional NC processing machine is usually used when automatically processing a workpiece that has a three-dimensional shape. In this case, a three-dimensional profile NC program is created in advance, and the After that, machining is performed based on this program. However, it is extremely difficult to create a three-dimensional profile NO program directly from a design drawing, etc., and even if a four-dimensional profile program cannot be created accurately, Even if it is possible, the workpiece will not necessarily be formed exactly according to the design drawings, so this program will not be appropriate for the workpiece, and therefore the machining accuracy will be low. In addition, conventionally, a mark indicating the location to be processed (for example, a trim line in the case of trimming) is drawn on the workpiece or model, and an industrial robot is used to scan this mark and create a three-dimensional image. Create a profile NC program, and then
A method of processing workpiece materials was attempted based on this program. However, with this method, it is difficult to draw the trim twin, etc., and this work must be done manually or by other methods.However, with the current technology, the accuracy of three-dimensional scanning is low, so in the end, it is difficult to draw the trim twin etc. The resulting program inevitably has large errors, so its scope of application has been limited to processes that do not require precision, such as spot welding and plasma cutting. The present invention has been made in view of the above points, and includes:
Focusing on the fact that the 2D profile A4NC log 2m can be created relatively easily from design drawings, etc., we first created a 2D pull-fill NC program tube and then applied it to -1 workpieces, models, etc. Perform scanning in the uniaxial direction (remained as the basic shape of the fill), play back the data to the above two-dimensional program to create a three-dimensional jo fill NC program, and then create this new round three-dimensional profile NC program. The NC processing machine is operated based on the °grams to process the workpiece. The processing machine to which the present invention is applied does not matter as long as it is a 1-3D NC processing machine, and the type and type of processing is not limited. J
. In short, it is sufficient if the three-dimensional NC processing machine is operated based on a three-dimensional profile NC program created by playing back scanning data in the uniaxial direction of the remaining part into a two-dimensional profile fill NC program. The following is an embodiment of the present invention. In the figure, 1 is a table, 2 is an underframe, 3 is a column, 4 is a beam, and 5 is a sliding frame], these are the main S pipes of the processing machine. . This processing machine is no different from ordinary machines of this kind, and the underframe 2 and the pillars 3 and the pillars 3 and the beams 4 intersect at right angles, respectively. Set the sliding frame 5 to the beam 4
The beam 4 slides in the left-right direction (Y-axis direction) along the column 3.
The table 1 slides up and down (in the Z-axis direction) along the underframe 2, and the table 1 slides back and forth (in the X-axis direction) along the underframe 2.
After all, the sliding frame 5 moves three-dimensionally along X%Y1 and zIIIIIIK. The method by which these slide is not specifically specified, so to explain it using the sliding frame 5 as an example, a male butterfly shaft 6 is mounted on the beam 4, and this is connected to a forward/reverse motor 7. On the other hand, the sliding frame 5 has a male spiral 8 formed therein, which is threadedly engaged with the male butterfly shaft 6, and is slid from side to side by driving a forward/reverse motor 71. Similarly, the beam 4 is moved up and down by the forward/reverse motor 9, and the table 1 is moved up and down by the forward/reverse motor 1.
It slides back and forth due to 0 K. Of course, although these forward/reverse motors 7 and 9.10 are not shown, they are driven by a combination motor according to a preset program, so the sliding frame 1 also has mounting plates 11a, llb, and 11 that can be raised and lowered. , and each has a laser beam irradiation nozzle u1.
A tracer audience and a high frequency spindle crane are attached. The irradiation nozzle U is equipped with a focusing lens 14 inside the processing head, which focuses the laser beam emitted from the main body of the laser oscillator. -The figure shows a type in which assist gas is ejected from the protruding end of the nozzle.The nozzle is funnel-shaped and has a small hole at its tip. The assist gas is formed so that it is irradiated with a laser beam and ejects assist gas6.
'In the nine processing machines constructed in this way, the laser beam irradiated from the mouth of the laser oscillator body installed near the processing machine is refracted using three reflecting mirrors 16 and 17 and guided to the irradiation nozzle 12. First, the first reflecting mirror well is located on a vertical line passing through the irradiation nozzle uy, is attached to the sliding frame 5, and moves along the KY axis integral with the irradiation nozzle ν. The second reflecting mirror 16 passes through the first reflecting mirror 15]
, is provided at one point on a line parallel to the Y-axis, is attached to the beam 4, and moves up and down together with the third reflector. The third reflecting mirror 17 is provided at one point on a line parallel to the z-axis through the second reflecting mirror 9, and is attached to a support 3Kll. The rape beam emitted from the laser oscillator body is
Third reflecting mirror 17 Because it is irradiated with K, the third reflecting mirror 1
The inclination of the light beam 7 is adjusted so that the light beam tg is reflected toward the two reflecting inkstones 16i'c. The inclinations of the second reflecting mirror 16 are adjusted so as to reflect light toward the first reflecting mirror 1sK, and the first reflecting mirror 16 reflects light toward the irradiation nozzle 12. In the figure, the position of the laser oscillator main body is shown in the figure, and the position where the laser beam is directly emitted from the second reflecting mirror and the direction in which the laser beam is emitted do not necessarily have to be this way. It is sufficient to place the main body at a different position Kwi and emit the talaser beam from there, using a reflector or the like to guide it to the irradiation nozzle 127].
For example, the laser beam emitted from the laser oscillator main body 13 is guided through an irradiation nozzle using a flexible tube whose inner surface is mirror-treated. The tracer brittle detects high-pitched noise in two axial directions on the surface of the workpiece, etc. and feeds it back to the combination machine, which operates the forward and reverse motors 7 and 10 to move the sliding frame 5t.
When moving in the X-axis and Y-axis directions, the four beams are moved up and down following the shape of the workpiece to ensure that the tip of the tracer 18 is always in constant contact with the surface of the workpiece. :
). - For example, the tracer 18 is equipped with a pressure sensor that detects the pressure when its tip contacts the surface of the workpiece, and changes in this pressure are observed in the combinator. It is configured so that the pressure is notified to the pressure detection circuit and fed back to the forward/reverse motor 9 to keep the pressure constant and to control the rotation of the forward/reverse motor 9. The movement of the beam 4 at this time is played back to the previous two-dimensional profile NC program through nine play pack circuits provided in the combination crystal, and is converted into a three-dimensional profile NC program. Since this NC pregram accurately corresponds to the shape of the workpiece, this NC pregram will be used next to operate the laser beam irradiation nozzle 12 and process the workpiece tube. This allows extremely accurate machining. In addition, in the above, the numerical system WI: 1 Nbijima-Yuya playback circuit is not new in itself, so N
I omitted it. The tracer simply scans the workpiece in two axial directions, and depending on the shape of the workpiece and the machining method, it can also detect the inclination angle and direction of the detection point, allowing one machining head to touch the workpiece. 4, which is perpendicular to the other part, has already been used, so a detailed explanation of the structure of this part is omitted. The high-frequency spindle 19 is an example of a machining head that processes workpiece material tubes instead of using a laser beam. Like the irradiation nozzle ν, it is operated by a three-dimensional profile NC program, and is used by other machining heads. It goes without saying that it is possible to change e.
Create a C tape tube and set it in the specified position of the numerical side cable combination. 1 Scan the Drono < 2 table with the tracer 18. At this time, the tracer 18 is lateralized by the two-dimensional profile NC tape for the X-axis and Y-axis profiles, so it ends up being %z-axis direction (x, y).
t scanning. 1ff data in the Z-axis direction obtained in *■ (there are 4 cases in which the inclination angle and inclination direction of the detection point are scanned together) is played back to the two-dimensional profile NC tape through a playback circuit (not shown), and the three-dimensional Create the original profile NC tape tube. In the above-mentioned nine steps KTh, in the actual press forming work, the trimming process is not the final process, but the trimmed product, that is, the peripheral edge of the trim panel, is further restriked or seven-lunge bent. Therefore, it is not necessarily impossible to determine the trim line by developing the restrike panel, etc. and theoretically analyzing it in advance based on the shape of the periphery of the nine-strike panel, etc. However, in reality, the shape of the peripheral edge of a restrike panel, etc. is determined by all manufacturing factors such as the degree of bending and elongation.
It is quite different from the trim line, and since it has a three-dimensional shape, it is extremely difficult to theoretically calculate and determine the trim line based on the distortion. For this reason, conventionally, when determining a trim line, an appropriate trim line is first determined and trimming is performed based on this. Furthermore, restrike processing or the like is performed on this, and the shape of the formed strike panel, etc. is checked, and the results are fed back to the above-mentioned trim line to correct it. Then, based on this corrected trim line, a restriking panel or the like is formed by the same procedure as above, its shape is checked, and the result is fed back to the trim line to correct it. In this way, a trim line of the desired regular shape is obtained. This work was previously done extremely inefficiently, and the material, the plate, was cut and cut. Since it requires highly skilled people and a lot of time, it is only possible to
Since the trim cut line smoothness is low compared to manual work, the above-mentioned correction work is inevitably repeated many times, which further increases the working time. Also, if the plate material has to be cut by hand and has a large size, a trimming metal m is made and trimming is performed using this.
This mold must be corrected every time the trim line is corrected, resulting in a huge amount of cost and man-hours. ett, the present invention can automatically perform trimming processing based on the two-dimensional profile NC tape, so the shape of the pipe such as the restriking panel is checked and the results are fed back to the two-dimensional goofy NO tape at the pipe tip. A new NC tape is created by making the necessary corrections, and a regular three-dimensional profile NC tape can be created very easily and efficiently. The procedure for creating the three-dimensional film NC tape 1 will be described below. ■ First, create a suitable two-dimensional profile NO tape tube, and then make a 111% pre-layout based on the ζONC tape. ■ Accordingly, create a trim panel. - Create a restriking panel by restriking or 7-lunge bending pipe layer on the above trim panel, and check its shape. ■ Feed back the check result to the previous two-dimensional profile NC tape and correct it. ■ Based on the new corrected tape, create a trim panel according to the steps shown in (1) to (3) above. ■ Hereafter, repeat the steps shown in (1) to (3) above. - When the trim cut line has the desired regular shape, the base three-dimensional four-fill NC tape tube is made into a regular tape. If the press-formed product is a one-piece or small-volume product, this tape can be used directly to trim the draw panel, and if the press-formed product is a mass-produced product, this tape can be used as a base for trimming the draw panel. After that, the draw panel is assembled and pressed. As described in detail above, the present invention is to attach a processing head such as a tracer, a laser beam irradiation nozzle, and a high frequency spindle to the sliding frame of a three-dimensional NC processing machine equipped with a numerical converter, and a combination crystal converter. The playback circuit is biased and the two-dimensional profile NC program is used as the basic shape of the profile in two-dimensional directions, and the tracer is operated to detect variations in the two-axis directions of the workpiece, etc., and the two-dimensional profile NC after this variation is detected. A three-dimensional profile NC program tube is created by playpacking the program. Therefore, the new three-dimensional profile NC program consists of X-axis 1 and Y-axis
The axial direction is the same as that of the original two-dimensional profile NC program, and the two axial directions accurately correspond to the shape of the workpiece, allowing extremely accurate machining of the workpiece. When creating a three-dimensional profile NC program based on the workpiece, it is extremely efficient because it can be processed immediately without moving the workpiece. It is also possible to perform processing with even higher precision. 4. Brief explanatory drawings of the drawings show one embodiment of the present invention, and the first figure is a partially cutaway perspective view, and the second figure is a front view showing the main part. 1; Table 2; Base frame 3; Support column 4; Beam 5; Sliding frame 6; Male spiral 7; Forward/reverse rotation motor 8; Female spiral 9; Forward/reverse rotation motor 10; Forward/reverse rotation motor 11; Irradiation nozzle 13; laser oscillator body 14; focusing lens t; first reflecting mirror 16; iris reflecting mirror 17; third reflecting mirror pus; tracer 19; high frequency spindle patent - applicant's representative 4

Claims (1)

[Claims] In a three-dimensional NC processing machine equipped with a numerically controlled converter, a laser beam irradiation nozzle, a high-frequency spindle, and a tracer are attached to the sliding frame.The tracer detects the surface shape of the workpiece in two axial directions. Moreover, the numerical control converter is equipped with a play pack circuit that play packs the detection results by the tracer into a two-dimensional profile NC program to create a three-dimensional profile NC program. Three-dimensional NC laser processing machine with numerical control combination