JP6895313B2 - Automatic programming device and method - Google Patents

Description

The present invention relates to an automatic program creation device and method for creating a machining program for determining a joint between a plate material and a part in laser machining or the like, and more specifically, depending on the state of the skid and the part or scrap of the laser machining machine. It relates to an automatic programming device and a method capable of determining the optimum joint.

Generally, when laser processing a plate material or the like with a laser processing machine, the plate material or the like is placed on a pallet having a skid and laser processed, but the parts cut out by the laser processing may fall from the skid of the pallet. To prevent this, a joint was provided to connect the plate material and the parts.

Japanese Unexamined Patent Publication No. 2013-128972

However, since the possibility of falling from the skid changes depending on the rotation angle and the arrangement position of the cut parts, the joints for preventing the cut parts from falling from the skid as described above are attached more.

When the number of joints is large as described above, there is a problem that it takes time to remove the joints in the subsequent process.

Also, when forming a hole in the plate material, conversely, the end material of the hole part must be dropped between the skids without attaching a joint, but the end material stands up without falling between the skids. There is a problem that the rising scrap material interferes with the laser head.

The present invention has been made by paying attention to the above-mentioned circumstances, and an object of the present invention is an automatic program creation device that determines an optimum joint according to the state of a skid and a part or a scrap of a laser processing machine. To provide a method.

The present invention is for solving the above-mentioned problem, and the invention according to claim 1 is a laser processing machine for producing a part as a product by placing a material on a table having a skid and performing laser processing. An automatic program creation device that creates a machining program for the laser machining machine in the laser machining system, and is a joint that connects the material and the part according to the state of the skid of the laser machining machine and the part. have a joint with means for determining the position, the joint with means determines the interference position between the skid and the gravity center position and the part of said part, interference between the skid and the gravity center position and the part of the part It is an automatic program creating apparatus characterized in that the position of the joint is determined based on the position.

The invention according to claim 2 is characterized in that the joint attaching means determines one joint in the part at an optimum position so as to prevent the part from falling between the skids. The automatic program creation device according to claim 1.

The invention according to claim 3 is characterized in that the joint attaching means also determines the position of an approach at which laser machining starts in the part based on the position of the center of gravity of the part and the position of interference between the part and the skid. The automatic program creation device according to claim 1 or 2.

The invention according to claim 4 is an automatic program creation device that creates a machining program of the laser machining machine in a laser machining system having a laser machining machine that places a material on a table having a skid and performs hole machining as laser machining. It has a joint attaching means for determining the position of one joint connecting the material and the end material generated by the hole drilling according to the skid and the hole drilling state of the laser machining machine, and the joint mounting. The means obtains the position of the center of gravity of the end material and the position of interference between the hole machining and the skid, and determines the position of the joint based on the position of the center of gravity of the end material and the position of interference between the hole machining and the skid. an automatic programming apparatus, characterized by.

The invention according to claim 5 is characterized in that the joint attaching means determines one joint in the end material at an optimum position so as to prevent the end material from standing up on the skid. The automatic program creation device according to claim 4.

The invention according to claim 6 also determines the position of the approach at which the laser machining starts in the hole drilling based on the position of the center of gravity of the scrap and the position of interference between the hole drilling and the skid. The automatic program creation device according to claim 4 or 5.

The invention according to claim 7 creates a processing program of the laser processing machine in a laser processing system having a laser processing machine in which a material is placed on a table having a skid and laser processing is performed to create a part as a product. This is an automatic program creation method for determining the position of one joint connecting the material and the part according to the state of the skid of the laser machine and the part, and the position of the joint is determined. In the step of determining, the position of the center of gravity of the part and the position of interference between the part and the skid are obtained, and the position of the joint is determined based on the position of the center of gravity of the part and the position of interference between the part and the skid. It is an automatic program creation method characterized by .

The invention according to claim 8 is an automatic program creation method for creating a processing program of the laser processing machine in a laser processing system having a laser processing machine that places a material on a table having a skid and performs hole processing as laser processing. It has a joint attaching step of determining the position of one joint connecting the material and the end material generated by the hole drilling according to the skid and the hole drilling state of the laser machining machine. In the step of determining the position, the position of the center of gravity of the end material and the position of interference between the hole machining and the skid are obtained, and the joint is based on the position of the center of gravity of the end material and the position of interference between the hole machining and the skid. It is an automatic program creation method characterized by determining the position of .

According to the present invention, the optimum joint can be determined according to the state of the skid and parts or scraps of the laser processing machine.

It is the schematic of the laser processing system which carried out the automatic program making method by this invention. It is a schematic block diagram of the processing side 1a of the laser processing machine 1 shown in FIG. It is an internal block diagram of CAM3 shown in FIG. It is explanatory drawing which shows the state which the material W is placed on the skid-shaped processing pallet 1a1 shown in FIG. It is a flowchart of one Embodiment of the machining program creation method including the automatic joint attachment method by this invention. It is explanatory drawing of the center of gravity position and the interference position in the part P which becomes a product by laser processing. It is a flowchart of the joint formation process considering the skid position of a part (product). It is explanatory drawing of the joint formation process considering the skid position of a part (product). , It is a flowchart of the joint forming process considering the skid position of the end material generated by the hole processing. It is explanatory drawing of the joint formation process considering the skid position of a scrap material.

FIG. 1 is a schematic view of a laser processing system in which the automatic program creation method according to the present invention is implemented.

As shown in FIG. 1, this laser processing system includes a laser processing machine 1, a CAM 3 as an automatic program creating device for creating a processing program of the laser processing machine 1, and a laser processing machine 1 based on a processing program from the CAM 3. It has an NC device 5 for driving the machine and a database 7 for storing various machining data.

Further, the CAM 3 as an automatic program creating device also constitutes a joint attaching means for determining an optimum number of joints at an optimum position according to the state of the skid and parts or scraps, which will be described later.

As shown in FIG. 1, the laser processing machine 1 is divided into a processing side 1a and a setup side 1b, and as shown in FIG. 2, the processing side 1a has a skid shape as a table on which the material W is placed. The processing pallet 1a1 of the above is provided, and the material W on the processing pallet 1a1 is laser-processed by the movable laser head 1c. Further, a skid-shaped table 1b1 is also provided on the setup side 1b, and the material W is placed on the table 1b1.

FIG. 2 is a schematic configuration diagram of the processing side 1a of the laser processing machine 1 shown in FIG.

As shown in FIG. 3, the CAM 3 includes a CPU 3a, a RAM 3b, a ROM 3c, a display 3d, and an input keyboard 3e connected to the CPU 3a.

FIG. 3 is an internal configuration diagram of the CAM 3 shown in FIG.

FIG. 4 is an explanatory view showing a state in which the material W is placed on the skid-shaped processing pallet 1a1 shown in FIG.

As shown in FIG. 4, a plurality of skids 1a3 are provided on the processing pallet 1a1, a material W is placed on the skids 1a3, and a plurality of parts 9 are cut out from the material W. There is.

Next, an embodiment of a machining program creating method including the automatic joint attachment method according to the present invention will be described with reference to FIG.

FIG. 5 is a flowchart of an embodiment of a machining program creating method including the automatic joint attachment method according to the present invention.

The automatic joint attachment method according to the present invention is performed in the process of creating a machining program.

First, in step 101 of FIG. 5, machining data is read from the database 7 by CAM 3, and automatic allocation is performed to allocate a tool locus to a part based on the machining data. In step 103, machining data is assigned to machining data by CAM 3. Based on this, the parts are arranged on the material W placed on the processing pallet 1a1, and in step 105, the data of the skid 1a3 of the processing pallet 1a1 is read out from the database 7 by the CAM 3 and acquired.

Next, in step 107, the CAM 3 determines the position of the center of gravity of the part or end material generated by laser processing and the position of interference between the part or end material and the skid. The offcuts are offcuts produced by hole processing.

That is, the CAM 3 obtains the shape of the part or the end material generated by the laser processing based on the processing data from the database 7, and obtains the position of the center of gravity of the part or the end material from the shape of the part or the end material. Then, the CAM 3 obtains the interference position between the part or scrap and the skid from the skid data from the database 7.

Here, with reference to FIG. 6, the position of the center of gravity and the position of interference in the part P produced by laser machining will be described.

FIG. 6 is an explanatory diagram of the position of the center of gravity and the position of interference in the part P which is a product by laser processing.

As shown in FIG. 6, here, the skid 1a3 is made up of a set of points arranged in the X direction and the Y direction, and is recognized as columns S1 and S2 extending in the X direction or the Y direction.

Then, in consideration of the occurrence of wear of the skid 1a3 and the displacement of the material, a part shape P2 in which the shape of the actual product P1 is reduced by the margin width is obtained, and a row of skids intersecting with the part shape P2 (this). In the case, the column S1) is obtained.

The center of gravity X of the product P1 is obtained based on the processing data from the database 7.

Next, in step 109, the CAM 3 determines whether the target is a laser-machined part or scrap.

That is, the CAM 3 determines whether the target generated by the laser machining is a part or a scrap based on the machining data from the database 7.

When it is determined in step 109 that the target generated by the laser processing is a part (product), the CAM 3 performs a joint forming process in consideration of the skid position of the part (product).

Here, with reference to FIGS. 6 to 8, the joint forming process in consideration of the skid position of the part (product) will be described in detail.

FIG. 7 is a flowchart of a joint forming process in consideration of the skid position of the part (product), and FIG. 8 is an explanatory diagram of the joint forming process in consideration of the skid position of the part (product).

In step 201 of FIG. 7, if it is determined by CAM3 whether or not the part is interfering with the skid 1a3 and it is determined that the part is not interfering with the skid 1a3, in step 203, the normal number is determined by CAM3. A joint is added to.

That is, the normal number of joints here is a predetermined large number of joints.

Next, when it is determined in step 201 that the parts are interfering with the skids 1a3, in step 205, CAM3 determines whether or not the parts are interfering with two or more rows of skids, and the parts are 2 If it does not interfere with more than a row of skids, in step 207, CAM3 adds one joint at a position that supports three points.

Here, with reference to FIG. 6, the operation of adding one joint to the position of supporting three points will be described.

As shown in FIG. 6, when the skid row S1 intersecting the part shape P2 is obtained, the two most spaced skid points (in this case, S1a and S1b) are found on the part shape P2. The perpendicular line B passing through the center of gravity X is obtained from the straight line A connecting the two most spaced skids S1a and S1b, and the intersection where the perpendicular line B and the part shape P2 of the product P1 intersect. Is the joint position J1.

That is, the two-point skids S1a and S1b and one joint provided at the joint position J1 form a three-point support.

In this way, while minimizing the number of joints, the support of the part P3 can be ensured and the part P3 can be prevented from falling from the skid.

When it is determined in step 205 that the parts are interfering with two or more rows of skids, in step 209, the center of gravity of the parts and the position of the approach are set by CAM3 with respect to the position of the skids interfering with the parts. It is determined where it is among the three relationships described below.

The position of the approach is the position where the laser machining starts in the part.

Here, with reference to FIG. 8, the three relationships between the center of gravity of the part and the position of the approach with respect to the position of the skid interfering with the part will be described.

FIG. 8 shows a case where the parts P1 and P2 interfere with the two rows of skids S3 and S4, and in (a), both the center of gravity X1 of the part P1 and the approach position A1 interfere with the part P1. This is the case where the first relationship is located between the two rows of skids S3 and S4, and (b) shows the two rows of skids S3 in which the center of gravity X1 of the part P1 interferes with the part P1. In the case where the position A2 of the approach is located between S4 and the position A2 of the approach is the second relationship located outside the skids S3 and S4 in the two rows, (c) is the case where the position A3 of the approach of the part P2 is the part. This is the case where the center of gravity X2 is located between the two rows of skids S3 and S4 interfering with P3 and is located outside the two rows of skids S3 and S4.

Here, too, the part P1 in which the shape of the actual product is reduced by the margin width is required in consideration of the occurrence of wear of the skids S3 to S5 and the displacement of the material.

In the case of the first relationship in step 209, no particular action is taken, and in the case of the second relationship, in step 211, the position of the approach is between the interfering skids by CAM3. Set to move to the center position.

That is, in the case of the second positional relationship shown in FIG. 8B, the approach position A2 is set to move to the center position Y between the two rows of skids S3 and S4.

In this way, as shown in FIG. 8B, the center of gravity X1 of the part P1 is located between the two rows of skids S3 and S4 interfering with the part P1, and the approach position A2 is in the two rows. Even when there is a second relationship located outside the skids S3 and S4, the approach position A2 is moved to the center position Y between the two rows of skids S3 and S4, so the laser machining approach Can be performed stably.

In the case of the above-mentioned third relationship in the above-mentioned step 209, in the above-mentioned step 213, the joint is set to be supported at three points at a predetermined position by the CAM 3.

That is, in the case of the third positional relationship shown in FIG. 8C, the skid S4 farthest from the center of gravity X2 among the two rows of skids S3 and S4 interfering with the part P3 is opposite to the center of gravity X2. The joint position J2 is set to come to the position of the part P3 farthest in the direction.

As described above, as shown in FIG. 8C, even when the center of gravity X2 of the part P2 has a third positional relationship located outside the two rows of skids S3 and S4, the two rows of skids S3, Along with S4, the skid S4 farthest from the center of gravity X2 and the joint position J2 provided at the position of the part P3 farthest from the center of gravity X2 form a three-point support, so that the part P3 is reliably supported. , It is possible to prevent the part P3 from falling from the skid.

As described above, according to this embodiment, it is possible to ensure the support of the part P3 and prevent the part P3 from falling from the skid while minimizing the number of joints.

Next, when it is determined in step 109 that the target generated by the laser processing is the end material produced by the hole processing, the CAM 3 performs a joint forming process in consideration of the skid position of the end material.

Here, with reference to FIGS. 9 and 10, a joint forming process in consideration of the skid position of the end material generated by the hole processing will be described in detail.

FIG. 9 is a flowchart of the joint forming process in consideration of the skid position of the end material generated by the hole processing, and FIG. 10 is an explanatory view of the joint forming process in consideration of the skid position of the end material. , The case where the hole shape H interferes with the one row of skids S6, and (b) shows the case where the hole shape H interferes with the two rows of skids S6 and S7.

In step 301 of FIG. 9, when it is determined by CAM3 whether or not the shape of the hole to be machined interferes with the skid 1a3 and it is determined that the shape of the hole to be machined does not interfere with the skid 1a3, what is particularly important? If it is determined that the shape of the hole to be machined interferes with the skids 1a3 without performing the above-mentioned treatment, in step 303, CAM3 determines whether or not the shape of the hole interferes with two or more rows of skids. When the shape of the holes does not interfere with two or more rows of skids, in step 305, the distance between the center of gravity of the scraps generated by the hole processing and the interfering skids is separated by a predetermined distance or more by CAM3. Whether or not it is determined.

Here, the predetermined distance is a distance of 1/4 of the diameter of the hole.

This predetermined distance will be described with reference to FIG. 10 (a).

As shown in FIG. 10A, when a row of skids S6 intersecting the hole shape H is obtained, the two most spaced points of the skid S6 on the hole shape H ( In this case, S6a and S6b) are obtained, and a perpendicular line E passing through the center of gravity X3 is obtained from a straight line D connecting the two most spaced skids S6a and S6b, and a straight line with the center of gravity X3 on the perpendicular line E. It is determined whether or not the distance from D is 1/4 or more of the diameter of the hole shape H.

In step 305, when the distance between the center of gravity of the scrap and the interfering skid is more than a predetermined distance, in step 307, the position of the approach is set to the center of gravity side by CAM3.

That is, in FIG. 10A, the shape H of the hole on the right side of the center of gravity X3, for example, the shape H of the hole farthest from the skid S6 interfering with the shape H of the hole in the direction of the center of gravity X3. Set the approach so that it comes to the position.

As a result, the hole drilling starts from the approach set on the shape H of the hole on the right side of the center of gravity X3, and the hole drilling ends at the position of the approach. It will surely fall between the skid rows S6 and S7.

In step 305, when the distance between the center of gravity of the scrap and the interfering skid is more than a predetermined distance, in step 309, the joint is set to the center of gravity side by CAM3.

That is, in FIG. 10A, the shape H of the hole on the right side of the center of gravity X3, for example, the shape H of the hole farthest from the skid S6 interfering with the shape H of the hole in the direction of the center of gravity X3. Set the joint to come to the position.

As a result, due to the joint set on the shape H of the hole on the right side of the center of gravity X3, the end material generated by the hole drilling does not stand up during the drilling, and the skid rows S6 and S7 are surely formed. It will fall in between.

Next, in step 303, when the shape of the hole interferes with two or more rows of skids, in step 311 the center of gravity of the scrap is set with respect to the position of the skid interfering with the shape of the hole by CAM3. It is determined where the position of the approach is in the three relationships described below.

Here, with reference to FIG. 10B, the three relationships between the center of gravity of the scrap and the position of the approach with respect to the position of the skid interfering with the shape of the hole will be described.

FIG. 10B shows a case where the hole shape H interferes with the two rows of skids S6 and S7, and both the center of gravity X3 of the scrap and the position of the approach interfere with the hole shape H. The first relationship between the two rows of skids S6 and S7 and the center of gravity X3 of the scraps are located between the two rows of skids S6 and S7 that interfere with the hole shape H, and the approach The position of is located between the second row of skids S6, S7 located outside the two rows of skids S6, S7, and the position of the approach is located between the two rows of skids S6, S7 interfering with the shape H of the hole, and the end. There is a third relationship in which the center of gravity X3 of the material is located outside the two rows of skids S6 and S7.

In the case of the above-mentioned first relationship in the above-mentioned step 311, no particular action is taken, and in the case of the above-mentioned second relationship, in the above-mentioned second relationship, in step 313, the position of the approach is between the skids interfering with each other. Set to move to the center position.

That is, in the case of the second positional relationship, the position of the approach is set to move to the center position between the two rows of skids S6 and S7.

In this way, the center of gravity X3 of the scrap is located between the two rows of skids S6 and S7 that interfere with the hole shape H, and the approach position is located outside the two rows of skids S6 and S7. Even in the case of the second relationship, since the position of the approach is moved to the center position between the skids S6 and S7 in the two rows, the laser processing approach can be stably performed.

In the case of the third relationship in step 311 above, in step 315, the joint is set on the center of gravity side by CAM3.

That is, in FIG. 10B, the shape H of the hole on the right side of the center of gravity X3, for example, the shape H of the hole farthest from the skid S6 interfering with the shape H of the hole in the direction of the center of gravity X3. Set the joint J3 to come to the position.

As a result, the joint J3 set on the shape H of the hole on the right side of the center of gravity X3 prevents the end material generated by the hole drilling from rising during the hole drilling.

Then, when the joint forming process in consideration of the skid position of the part (product) in step 111 and the joint forming process in consideration of the skid position of the end material generated by the hole drilling in step 113 are completed, the process returns to FIG. At 115, the laser machining path is determined by the CAM 3, and in step 117, NC data is created based on the laser machining path determined by the CAM 3, and the machining program creation process is completed.

The present invention is not limited to the embodiment of the above-mentioned invention, and can be implemented in other aspects by making appropriate changes.

1 ... Laser processing machine 3 ... CAM
5 ... NC device 7 ... database
W ... Material

Claims (8)

An automatic program creation device that creates a processing program for a laser processing machine in a laser processing system that has a laser processing machine that creates parts as a product by placing a material on a table with a skid and performing laser processing. ,
Depending on the state of the skid and the part of the laser processing machine, it has a joint with means for determining the position of one of the joint connecting the said and the material parts,
The joint attaching means obtains the position of the center of gravity of the part and the position of interference between the part and the skid, and determines the position of the joint based on the position of the center of gravity of the part and the position of interference between the part and the skid. An automatic program creation device characterized by the fact that. The automatic according to claim 1, wherein the joint attaching means determines one joint in the part at an optimum position so as to prevent the part from falling between the skids. Program creation device. The first or second aspect of the present invention, wherein the joint attaching means also determines the position of the approach at which the laser machining starts in the part based on the position of the center of gravity of the part and the position of interference between the part and the skid. Automatic programming device. An automatic program creation device that creates a processing program for a laser processing machine in a laser processing system that has a laser processing machine that places a material on a table with a skid and performs hole processing as laser processing.
It has a joint attaching means for determining the position of one joint connecting the material and the end material generated by the hole drilling according to the skid of the laser machining machine and the state of hole drilling.
The joint attaching means obtains the position of the center of gravity of the end material and the position of interference between the hole processing and the skid, and based on the position of the center of gravity of the end material and the position of interference between the hole processing and the skid, the joint An automatic programming device characterized by determining a position. The automatic according to claim 4, wherein the joint attaching means determines one joint in the end material at an optimum position so as to prevent the end material from standing up on the skid. Program creation device. 4. The joint attachment means also determines the position of the approach at which the laser machining starts in the drilling based on the position of the center of gravity of the scrap and the position of interference between the drilling and the skid. 5. The automatic program creation device according to 5. It is an automatic program creation method that creates a processing program for the laser processing machine in a laser processing system that has a laser processing machine that creates parts as a product by placing a material on a table with a skid and performing laser processing. ,
It has a step of determining the position of one joint connecting the material and the part according to the state of the skid of the laser processing machine and the part.
In the step of determining the position of the joint, the position of the center of gravity of the part and the position of interference between the part and the skid are obtained, and the position of the joint is determined based on the position of the center of gravity of the part and the position of interference between the part and the skid. An automatic program creation method characterized by determining the position . An automatic program creation method for creating a processing program for a laser processing machine in a laser processing system having a laser processing machine that places a material on a table having a skid and performs hole processing as laser processing.
It has a joint attaching step of determining the position of one joint connecting the material and the end material generated by the hole drilling according to the skid and the hole drilling state of the laser machining machine.
In the step of determining the position of the joint, the position of the center of gravity of the end material and the position of interference between the hole processing and the skid are obtained, and based on the position of the center of gravity of the end material and the position of interference between the hole processing and the skid. , An automatic program creation method characterized by determining the position of the joint.

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