JP6690138B2 - Laser processing machine control device, laser processing machine, and work processing method - Google Patents

Description

  The present invention relates to a laser processing machine control device, a laser processing machine, a processing program generation device, a processing program generation method, and a work processing method.

  It is known that a laser processing machine cuts a part of a work with a laser beam to form a product. The laser light is converged into, for example, a spot light of 1 mm or less and used for cutting a plate-like work or the like. Therefore, the periphery of the cut product is surrounded by a narrow gap that is almost the same as the spot diameter of the laser light. Therefore, since the product is often caught on the residual material in the processed work, it has been proposed to separate the product from the residual material by lifting the residual material while pressing the product downward (for example, Patent Document 1). 1).

Japanese Utility Model Publication No. 6-34071

  By the way, in order to obtain as many products as possible from one work and improve the yield, products in the work are set as close to each other as possible. As a result, the width of the remaining part (sun) between the products may be narrow and long, and such a remaining part is cooled after receiving the heat of the laser beam having a high heat density and contracts in the longitudinal direction. As a result, there is a problem that the narrow gap around the product disappears, the product is strongly gripped by the residual material, and the product cannot be easily separated from the residual material even if the product is pressed downward. Further, it is desired that the product can be easily separated from the residual material by lifting the residual material without pressing the product downward as in the above-mentioned Patent Document 1.

  In view of the circumstances as described above, the present invention provides a laser processing machine capable of easily separating a product from the residual material by eliminating or reducing gripping of the product by the residual material even when the residual portion contracts. It is an object of the present invention to provide a control device, a laser processing machine, a processing program generation device, a processing program generation method, and a work processing method.

The present invention is a controller for a laser processing machine, which moves a workpiece and a laser head relative to each other and cuts a part of the workpiece by laser light emitted from the laser head to form a product. or in accordance with the remainder being formed between the product and the workpiece edge, it is cut in the cross direction with respect to the longitudinal direction of the remaining portion to form a cut portion comprising a cross-portion which is formed in a spring shape to the workpiece.

In addition, the cut portion may include an extended portion that extends from the outer periphery of the product and is cut, and the intersecting portion may be cut from a part of the extended portion. Further, the extended portion may be cut so as to extend from one of the one of the corner portions of the product along the longitudinal direction of the remaining portion. Also, if the extensions are cut in parallel from the two products, the respective intersections may be staggered along the extensions. Further, the present invention is a control device for a laser processing machine, which relatively moves a work and a laser head, and cuts a part of the work by laser light emitted from the laser head to form a product. Of the extended portion that is cut from the outer periphery of the product according to the remaining portion formed between the products or between the product and the work end portion, and the intersecting portion that is cut in the direction intersecting the longitudinal direction of the remaining portion. to form a cut portion includes at least one to the work, the material of the workpiece, thickness, length of the remaining portion, Ru includes a determination unit which determines whether or not to form a cut portion based on at least one of width. In addition, when the determination unit determines the formation of the notch, the notch may be added to the previously acquired machining program or the machining program may be corrected.

  Further, the present invention provides a laser processing machine including a laser head that moves relative to a work and emits a laser beam to cut the work, and the above-described control device.

Further, the processing program generation device according to the aspect of the present invention is a laser processing machine that forms a product by moving a workpiece and a laser head relatively and cutting a part of the workpiece by laser light emitted from the laser head. On the other hand, it is a device for generating a machining program for executing a machining process, and cuts in a direction intersecting with the longitudinal direction of the remaining part according to the remaining part formed between products or between the product and the work end part. A machining program for forming a cut portion including an intersecting portion formed in a spring shape on a work is generated.
Further, the processing program generation device according to the aspect of the present invention is a laser processing machine that forms a product by moving a workpiece and a laser head relatively and cutting a part of the workpiece by laser light emitted from the laser head. On the other hand, a device for generating a machining program for executing a machining process, which extends outward from the outer periphery of the product and cuts in accordance with the remainder formed between the products or between the product and the work end. A machining program for forming a cut portion including at least one of an extended portion to be cut, and an intersecting portion to be cut in a crossing direction with respect to the longitudinal direction of the remaining portion on the work, the material of the work, the thickness, the length of the remaining portion, A determination unit that determines whether or not to form the cut portion based on at least one of the widths is provided.

Further, a machining program generating method according to an aspect of the present invention is a laser machining machine that forms a product by moving a workpiece and a laser head relatively and cutting a part of the workpiece by laser light emitted from the laser head. in contrast, a method of generating a machining program for executing processing in accordance with the remainder being formed between the between product or between products and work end, cut in the cross direction with respect to the longitudinal direction of the remaining portion Forming a notch in the work, the notch including the intersecting portion formed into a spring shape.
Further, a machining program generating method according to an aspect of the present invention is a laser machining machine that forms a product by moving a workpiece and a laser head relatively and cutting a part of the workpiece by laser light emitted from the laser head. On the other hand, it is a method of generating a machining program for executing a machining process, which extends outward from the outer periphery of the product and cuts in accordance with the remainder formed between the products or between the product and the work end. Forming an incision portion including at least one of an extended portion and an intersection portion cut in a direction intersecting the longitudinal direction of the remaining portion on the work, and the work material, thickness, remaining portion length, and width. Determining whether or not to form the cut portion based on at least one.

Further, the present invention provides a work and forming a product by cutting a part of the work by the laser light by the laser head is relatively moved emitted from the laser head, and between the product or between products depending on the rest which is formed between the word over click end, and it is cut in the cross direction with respect to the longitudinal direction of the remaining portion to form a cut portion comprising a cross-portion which is formed in a spring shape to the work, There is provided a work processing method including:
Further, the present invention is to form a product by moving a work and a laser head relative to each other and cutting a part of the work by laser light emitted from the laser head, and between the products or between the product and the work end. A cut portion including at least one of an extended portion that extends outward from the outer periphery of the product and is cut in accordance with the remaining portion formed between the remaining portion and a cross portion that is cut in a direction intersecting the longitudinal direction of the remaining portion. A work machining method, and determining whether or not to form a notch based on at least one of the material, thickness, remaining length, and width of the work. Provided.

  According to the control device of the laser processing machine of the present invention, even if the remaining portion which has been heated by the laser light at the time of cutting contracts, the residual portion is extended by the extension of the cut portion or the opening of the intersecting portion. The product can be easily separated from the residual material by eliminating or reducing the grip of the product. Therefore, when the residual material is lifted while pressing the product, the product can be easily separated from the residual material. Further, since the gap between the product and the residual material is secured, it is possible to separate the product from the residual material only by lifting the residual material.

  Further, when the intersecting portion is cut from a part of the extension portion, the gripping of the product by the residual material can be efficiently eliminated or reduced by both the extension portion and the intersection portion. In addition, when the extended portion of the cut portion is formed to extend from one piece that constitutes the corner portion of the product along the longitudinal direction of the remaining portion, it is possible to prevent the corner portion of the product from being gripped due to contraction of the remaining portion. It can be prevented. Also, when the extension parts are cut in parallel from two products, in the case where the intersecting parts are alternately arranged along the extension parts and formed into a spring shape, the spring-like parts can be extended. Since the contraction of the remaining portion is allowed, it is possible to prevent the remaining material from gripping the product. Further, in the case of including a determination unit that determines whether or not to form the cut portion based on at least one of the material of the workpiece, the thickness, the length of the remaining portion, and the width, the cut portion is provided at a required position by the determination unit. Since it is formed, the cut portion can be formed efficiently. In addition, when the determination unit determines the formation of the cut portion, if the cut portion is added to the previously acquired processing program or the processing program is modified, the processing program is changed in the laser processing machine. Since it is not necessary to change the processing program with the device etc., the operator's labor can be saved.

  Further, according to the laser processing machine of the present invention, it is possible to provide a laser processing machine which can easily separate the product from the residual material because it is provided with the control device described above.

  Further, according to the machining program generation device and the machining program generation method of the present invention, it is possible to generate, as the machining program that can be provided to the laser beam machine, a machining program that can easily separate the product from the residual material.

  Further, according to the processing method of the present invention, the product can be easily separated from the residual material.

It is a figure showing an example of a laser beam machine and a control device of a laser beam machine concerning an embodiment. It is a flow chart which shows an example of operation of a control device. It is a flowchart which shows an example of a workpiece processing method. It is a figure which shows an example of a workpiece processing method. It is a figure which shows an example of the workpiece processing method following FIG. FIG. 6 is a diagram illustrating an example of a work processing method following FIG. 5. It is a figure which shows the state which the remaining part contracted. It is a figure which shows the other example of a notch part. (A)-(C) is a figure which shows the other example of a notch part. (A)-(C) is a figure which shows the other example of a notch part. (A) And (B) is a figure which shows the other example of a notch part. It is a functional block diagram showing an example of a processing program generation device concerning an embodiment. It is a flow chart which shows an example of a processing program generation method.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to this. Further, in the drawings, in order to explain the embodiment, a part of the drawing is enlarged or emphasized, and the scale is appropriately changed. In each of the following drawings, the directions in the drawings will be described using the XYZ coordinate system. In this XYZ coordinate system, the plane parallel to the horizontal plane is the XY plane. An arbitrary direction parallel to the XY plane is described as an X direction, and a direction orthogonal to the X direction is described as a Y direction. Further, the direction perpendicular to the XY plane is referred to as the Z direction. In each of the X direction, the Y direction, and the Z direction, the arrow direction in the drawing is the + direction, and the direction opposite to the arrow direction is the − direction.

<Laser processing machine>
FIG. 1 is a diagram illustrating an example of a laser processing machine and a controller for the laser processing machine according to the embodiment. This laser processing machine 1 can emit a laser beam L from a laser head 2 to cut a work W. As shown in FIG. 1, the laser processing machine 1 includes a laser head 2, a laser light source 3, a head moving device 4, and a control device 5.

  The laser head 2 is connected to the laser light source 3 via an optical transmission body such as an optical fiber (not shown), and converges the laser light L from the laser light source 3 and emits it downward (-Z direction) from the nozzle 2a. To do. The laser head 2 has an optical system (not shown) that converges the laser light L on the work W and forms a spot S having a predetermined diameter (for example, a diameter of 0.2 mm). The diameter of the spot S of the laser light L is set according to processing conditions such as cutting of the work W. Assist gas may be emitted together with the laser light L from the nozzle 2a when the work W is processed. Further, the nozzle 2a may be replaceable.

  The head moving device 4 moves the laser head 2 in the X direction, the Y direction, and the Z direction. The head moving device 4 includes, for example, a gantry that can move in the X direction, a slider that can move in the Y direction with respect to the gantry, and an elevating unit that can move in the Z direction with respect to the slider. By driving the drive source, the laser head 2 is moved to predetermined positions in the X direction, Y direction, and Z direction. However, the configuration of the head moving device 4 is not limited to this, and may be performed by a robot arm.

  The control device 5 controls the operations of the laser light source 3 and the head moving device 4. The control device 5 has an arithmetic processing device such as a CPU (Central Processing Unit) and a storage device such as a main storage device and an auxiliary storage device (not shown). The storage device stores various information such as various programs such as a machining program and machining conditions for the work W. The control device 5 reads the processing program from the storage device or the like and operates the laser head 2 and the head moving device 4 in accordance with the processing program to cut a part of the work W with the laser light to form a product. The processing program includes, in addition to the moving path and moving speed of the laser head 2 along the product dimension, for example, the output of laser light and the ejection amount of assist gas according to processing conditions such as the material and thickness of the work W. Also includes such actions. Further, the processing program also includes a movement path of the laser head 2 for forming the cut portions 10A and 10B, which will be described later.

  In the present embodiment, in order to facilitate the description, the case of forming a plurality of rectangular products M1 and M2 will be described as an example, but the present invention is not limited to this, and a single product is formed in the work W. Or a product having a shape different from the rectangular shape may be formed. Although the configuration in which the laser head 2 moves with respect to the work W has been described above, the present invention is not limited to this, and one in which the laser head 2 is fixed and the work W is moved, or both the laser head 2 and the work W are used. An arbitrary configuration, such as a moving one, in which the workpiece W and the laser head 2 move relative to each other is applicable.

  The work W is carried into the processing area of the laser processing machine 1 while being placed on a pallet or the like (not shown). The work W is cut by the laser light L while being placed on the pallet, and is then carried out of the laser processing machine 1 while being placed on the pallet. As this pallet, for example, a pallet that can be conveyed while the work W is placed on the upper end of a sawtooth shape, a corrugated shape, or a sword shape is used. The operation of such a pallet may also be controlled by the control device 5.

  As shown in FIG. 1, the work W is cut to form the rectangular products M1 and M2, so that the remaining portion R is formed between the products M1 and M2. The remaining portion R is a part of the remaining material obtained by cutting the products M1 and M2 from the work W. In the present embodiment, the remaining portion R has, for example, a narrow width in the Y direction and a long length in the X direction. However, these are determined by the product formed in the work W, and have a narrow width and a long length in a direction different from the X direction. It may be formed so that Further, the cut out products M1 and M2 are surrounded by a gap C having a width (for example, about 0.2 mm) corresponding to the spot S.

  The control device 5 can form the notches 10A and 10B extending outward from the outer peripheries of the products M1 and M2 on the work W. The cut portions 10A and 10B are, for example, extending portions 11A and 11B that extend in the X direction from the products M1 and M2 and are linearly cut, and intersecting directions (for example, the Y direction) from a part of the extending portions 11A and 11B. And a linear crossing portion 12A, 12B cut into the.

  The control device 5 can form the cut portions 10A and 10B along the longitudinal direction (X direction) of the remaining portion R. For example, the control device 5 may form the cut portion 10A so as to extend in the X direction from one piece M1b of the two pieces M1b and M1c forming the corner M1a of the product M1. Further, the control device 5 may form the notch 10B so as to extend in the X direction from one piece M2b of the two pieces M2b and M2c forming the corner M2a of the product M2. Further, when the extension portions 11A and 11B are parallel to the products M1 and M2, the control device 5 intersects the intersection portions 12A and 12B so as to be alternately arranged along the extension portions 11A and 11B to form a spring shape. The portions 12A and 12B may be formed.

  The control device 5 has a determination unit 6. The determination unit 6 determines whether to form the cut portion 10A or the like on the work W. This determination is made based on at least one of the material and thickness of the work W, the length (dimension in the longitudinal direction) and the width (dimension in the lateral direction) of the remaining portion R, for example. Further, when the determination unit 6 determines that the cut portion 10A and the like are to be formed, the control device 5 may calculate and obtain the shape and dimensions of the cut portion 10A and the like from information on the material and thickness of the work W. Alternatively, the shape or size stored in advance in the storage device may be selected and applied.

  FIG. 2 is a flowchart showing an example of the operation of the control device 5. As shown in FIG. 2, the control device 5 reads the machining program (step S01). This processing program may be stored in the storage device in advance, or may be sent from the host controller (see the host controller 200 in FIG. 9) wirelessly or by wire. Further, the processing program stored in a storage medium such as a USB memory may be read. Next, based on the read machining program, the determination unit 6 refers to the material and thickness of the work W, the length (dimension in the longitudinal direction), and the width (dimension in the lateral direction) of the remaining portion R to make a cut portion. Is formed (step S02).

  For example, when the work W of a predetermined material (for example, iron or aluminum) has a predetermined thickness (for example, 3 mm or 5 mm), the determination unit 6 determines the width of the remaining portion R (the distance between the products M1 and M2) to be predetermined. When it is smaller than a value (for example, 1 cm or 2 cm) and the length of the remaining portion R in the longitudinal direction is larger than a predetermined value (for example, 10 c or 20 cm), the remaining portion R contracts to grip the product M1 or the product M2. It is determined that the cut portion is necessary because of the occurrence of. However, this determination by the determination unit 6 is an example, and the determination may be made by another method. Further, whether or not the determination unit 6 makes a determination is arbitrary, and the control device 5 controls to uniformly add a cut portion to the product M1 or the like read by the processing program without determining the remaining portion R. You may.

  When it is determined that the cut portion is necessary (YES in step S02), the control device 5 adds a step of forming the cut portion to the machining program (step S03). The control device 5 sets, based on, for example, the material and thickness of the work W and the width and length of the remaining portion R, which shape of the cut portion is to be formed. As the shape of the cut portion, a plurality of types of shapes may be stored in advance in addition to the above-described cut portions 10A and 10B, and the shape may be selected from the plurality of types of shapes. Further, the size and shape of the cut portion may be calculated. Further, the step S03 is not limited to the addition of the cut portion to the machining program. For example, the processing program may be modified so that the laser head 2 is operated including the cut portion together with the product. When it is determined that the cut portion is not necessary (NO in step S02), the cut portion is not added to the machining program or the machining program is not corrected.

  The control device 5 executes the set machining program and operates the laser head 2 to start cutting of the work W (step S04). Note that the control device 5 may collectively control the laser processing machine 1, and in this case, also controls operations such as loading and unloading of the work W with respect to the processing region of the laser processing machine 1.

  Hereinafter, the processing method of the work W will be described by taking the case where the control device 5 determines that the cut portion is required to be formed and adds the cut portions 10A and 10B to the processing program or the processing program is modified as an example. To do. FIG. 3 is a flowchart showing an example of a method of processing the work W. 4 and 5 are plan views showing an example of the operation process of the work W by the laser processing machine 1. 3 to 5 show an example of a method of processing the work W, and do not limit the shape of the product or the order of cutting the work W.

  First, as shown in FIG. 3, the periphery of the product M1 of the work W is cut (step S11). In step S11, the laser light L is emitted from the laser head 2 and a spot S is formed on the work W. Then, the laser head 2 is moved and the spot S moves on the work W, whereby the work W is cut by the spot S.

  As shown in FIG. 4A, first, the spot S is arranged at a predetermined starting point P1 on the work W. Then, the spot S moves from the starting point P1 in the −Y direction, so that a linear gap C1 along the Y direction is formed. Next, the spot S moves in the + X direction from the −Y side end of the gap C1 to form a linear gap C2 along the X direction. Subsequently, the spot S moves in the + Y direction from the + X side end of the gap C2, so that a linear gap C3 along the Y direction is formed. Then, the spot S moves from the + Y side end of the gap C3 in the −X direction, so that a linear gap C4 along the X direction is formed. By connecting the clearance C4 to the clearance C1, a rectangular product M1 is formed in a state surrounded by the four linear clearances C1 to C4. The gaps C1 to C4 are each formed to have a length preset according to the size of the product M1. Further, the product M1 is formed with a corner M1a and two pieces M1b and M1c forming the corner M1a.

  Next, as shown in FIG. 3, the extension portion 11A is cut (step S12). In step S12, the spot S moves in the -X direction from the position immediately after the gap C4 is formed. As a result, as shown in FIG. 4B, of the two pieces M1b and M1c forming the corner M1a of the product M1, the extension 11A extending from the piece M1b along the X direction in the −X direction. Is formed. The extension portion 11A is formed along the longitudinal direction of the remaining portion R formed in a later step.

  Next, as shown in FIG. 3, the intersection 12A is cut (step S13). In step S13, the spot S moves in the Y direction. In this case, as shown in FIG. 5A, for example, the spot S may move in the -Y direction from the + Y side of the extension portion 11A toward the extension portion 11A, or from the extension portion 11A in the + Y direction. Alternatively, the spot S may be moved. Further, when forming the two intersecting portions 12A, it is optional whether the left side (+ X side) or the right side (−X side) is formed first.

  Next, as shown in FIG. 3, a cut is made in the intersecting portion 12B of the product M2 adjacent to the product M1 (step S14). In step S14, the spot S moves in the Y direction as in step S13. In this case, as shown in FIG. 5B, for example, the spot S may move in the + Y direction or the −Y direction. However, the −Y side end of the intersecting portion 12B is cut so as not to be connected to the extending portion 11A. When forming the two intersecting portions 12B, it is optional whether the left side (+ X side) or the right side (−X side) is formed first.

  Further, steps S13 and S14 are not limited to forming the intersection 12A first and then forming the intersection 12B. For example, the intersecting portions 12A and the intersecting portions 12B may be alternately formed one by one. The number of intersecting portions 12A and 12B is arbitrary, and may be one each, or may be three or more. Further, the number of intersections 12A and the number of intersections 12B are not limited to the same number, and may be different, for example, two intersections 12A and one intersection 12B.

  Next, as shown in FIG. 3, the cut of the extension part 11B regarding the product M2 is performed (step S15). In step S15, as shown in FIG. 6A, the spot S is placed at the preset starting point P2 on the work W, and then the spot S moves in the + X direction. Thereby, the extended portion 11B along the X direction is formed. Further, when the spot S moves in the + X direction, the intersection S 12B and the extension 11B are connected by passing through the + Y side end of the intersection 12B. The extended portion 11B is in a state of extending in the −X direction from the piece M2b along the X direction of the two pieces M2b and M2c forming the corner M2a of the product M2 formed in the subsequent step. Further, the extension portion 11B is formed along the longitudinal direction of the remaining portion R formed in a later process.

  Next, as shown in FIG. 3, the periphery of the product M2 is cut (step S16). In step S16, first, the spot S directly moves in the + X direction from the position immediately after the extension portion 11B is formed, thereby forming a linear gap C5 along the X direction. Next, the spot S moves from the + X side end of the gap C5 in the + Y direction, so that a linear gap C6 along the Y direction is formed. Then, the spot S moves from the + Y side end of the gap C6 in the −X direction, so that a linear gap C7 along the X direction is formed. Then, the spot S moves in the −Y direction from the −X side end of the gap C7, whereby a linear gap C8 along the Y direction is formed. By connecting this gap C8 to the gap C5, a rectangular product M2 is formed in a state surrounded by four linear gaps C5 to C8. Further, the product M2 is formed with a corner M2a and pieces M2b and M2c forming the corner M2a. Then, the balance R is formed between the product M1 and the product M2.

  As described above, the products M1 and M2 are formed in the work W, and the cut portions 10A and 10B are formed in a state of extending outward from the products M1 and M2. The cut-out products M1 and M2 are surrounded by narrow gaps C1 to C4 and C5 to C8 corresponding to the diameter of the spot S, respectively. Further, the work W is in a state of being heated by the laser beam used for cutting, and is naturally cooled after the cutting process. In FIG. 3, as shown in FIGS. 6A and 6B, after cutting the extension portion 11B and the intersecting portion 12B of the adjacent product M2 in step S15, the periphery of the product M2 is cut in step S16. However, the order is not limited to this. For example, the extension portion 11B and the intersecting portion 12B may be cut after first cutting all or part of the periphery of the product M2.

  FIG. 7 is a plan view showing a state where the remaining portion R contracts. As shown in FIG. 7, as the work W cools, the remaining portion R contracts in the longitudinal direction (X direction). On the other hand, in the present embodiment, the cut portions 10A and 10B are formed in the products M1 and M2, and have the extension portions 11A and 11B and the intersection portions 12A and 12B, respectively. Therefore, as shown in FIG. 7, the intersecting portions 12A and 12B have a spring shape, and the contracting of the remaining portion R causes the intersecting portions 12A and 12B to open and deform. This prevents or suppresses the reduction of the widths L1 and L2 of the gap C formed around the products M1 and M2. Therefore, the products M1 and M2 are not in a state of being strongly gripped by the residual material.

  As described above, according to the present embodiment, even if the remaining portion R that has been heated by the laser light L at the time of cutting contracts, the gripping of the product by the residual material is eliminated or reduced, and thus the products M1 and M2 are reduced. Can be easily separated from the remaining material. Therefore, when the residual material is lifted while pressing the products M1 and M2, the product can be easily separated from the residual material. Furthermore, since the gap C between the products M1 and M2 and the residual material is secured, it is possible to separate the products M1 and M2 from the residual material simply by lifting the residual material.

  In the above-described embodiment, the case where the cut portions 10A and 10B are formed in order to avoid the influence of the remaining portion R formed between the two products M1 and M2 has been described as an example, but the present invention is not limited to this. Not a thing. FIG. 8: is a perspective view which shows an example of the notch part 10C which concerns on a modification. In this modification, the same or equivalent components as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted or simplified.

  As shown in FIG. 8, by cutting the work W to form a rectangular product M3, a residual portion R1 is formed between the product M3 and the end Wa of the work W. Here, the remaining portion R1 is formed, for example, so as to be long in the X direction, but the present invention is not limited to this, and may be formed so as to be long in a direction different from the X direction. Further, the cut product M3 is surrounded by the narrow gap C corresponding to the spot S.

  The cut portion 10C is formed so as to extend outward from the outer periphery of the product M3. The cutout portion 10C includes an extension portion 11C and an intersection portion 12C. The extension portion 11C is formed along the longitudinal direction (X direction) of the remaining portion R1. The cut portion 10C extends in the X direction from one of the two pieces M3b and M3c forming the corner M3a of the product M3 in the X direction and is linearly cut. The number of intersecting portions 12C is arbitrary and may be one or three or more. The intersecting portion 12C is linearly cut in the + Y direction from a part of the extending portion 11C. Further, the extension portion 11C may be formed to extend from the product M3 in the Y direction. In this case, the intersecting portion 12C is formed in the −X direction, for example.

  According to this modified example, even when the remaining portion R1 that has been heated by the laser light L when cutting the product M3 contracts, the intersecting portion 12C is similar to the intersecting portions 12A and 12B shown in FIG. Corresponds to contraction by opening. This prevents or suppresses the reduction of the gap C between the product M3 and the residual material. Therefore, like the products M1 and M2 described above, the product M3 is not in a state of being strongly gripped by the residual material, and the product M3 can be easily separated from the residual material. Further, as the notch 10C, one or more notches may be formed from the end Wa of the work W in the −Y direction. In this case, they may be alternately formed so as to be aligned with the two intersecting portions 12C.

  9 to 11 are diagrams illustrating examples of the cutout portion according to the modification. As shown in FIG. 9A, the cut portions 10D and 10E are formed so as to extend from the outer peripheries of the products M1 and M2 along the longitudinal direction of the remaining portion R, respectively. The cut portion 10D has extended portions 11D and 11E that are continuous with the gap C and does not include an intersecting portion. In FIG. 9A, the cut portions 10D and 10E are formed on both the + X side and the −X side of the remaining portion R, but either one may be formed. Further, the lengths of the extended portions 11D and 11E in the X direction can be set arbitrarily.

  According to the notches 10D and 10E, the remaining portion R is extended in the X direction, and the contraction amount in the X direction is alleviated even when the remaining portion R contracts, so that the gap C is reduced in the X direction. Prevent or suppress. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material.

  As shown in FIG. 9 (B), the cut portion 10F has an intersection portion 12F in a cross direction with respect to the longitudinal direction (X direction) of the remaining portion R in the remaining portion R between the products M1 and M2, and extends. Does not include parts. The intersecting portion 12F is formed apart from the gap C between the products M1 and M2, but may be connected to either one of the gaps C or both gaps C. Further, the intersection 12F can be set to an arbitrary angle with respect to the X direction. Further, the position where the intersecting portion 12F is formed may be on the + X side or the −X side with respect to the central portion, in addition to the substantially central portion in the X direction of the remaining portion R. Further, a plurality of intersecting portions 12F may be formed.

  According to this cut portion 10F, when the remaining portion R contracts, the amount of contraction in the X direction is relaxed by opening the intersecting portion 12F as shown by the dotted line in FIG. 9 (B), so that the gap C moves in the X direction. Prevent or suppress the decrease. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material.

  As shown in FIG. 9 (C), the cut portion 10G has an intersection portion 12G having an opening shape in a part of the remaining portion R in the remaining portion R between the products M1 and M2, and includes an extended portion. Not at all. Since this intersecting portion 12G has an opening shape, it includes a portion in the intersecting direction with respect to the longitudinal direction (X direction) of the remaining portion R. The intersecting portion 12G is formed apart from the gap C between the products M1 and M2, but may be connected to either one gap C or both gaps C. In addition to the rectangular shape, the intersecting portion 12G may be formed in a triangular shape, a polygonal shape of pentagon or more, a circular shape, an elliptical shape, and an oval shape. Further, the position where the intersecting portion 12G is formed may be on the + X side or the −X side with respect to the central portion, in addition to the substantially central portion in the X direction of the remaining portion R. Further, a plurality of intersecting portions 12G may be formed.

  According to the notch portion 10G, when the remaining portion R contracts, the amount of contraction in the X direction is relaxed by opening the intersecting portion 12G as shown by the dotted line in FIG. 9C, so that the gap C moves in the X direction. Prevent or suppress the decrease. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material.

  As shown in FIG. 10 (A), the cut portion 10H is formed so as to extend from the outer periphery of one of the products M1 and M2 in a direction intersecting the longitudinal direction of the remaining portion R. The cut portion 10H has an intersecting portion 12H which is continuous with the gap C. The intersecting portion 12H is also an extended portion extending from the outer periphery of the products M1 and M2. 10A, the cut portion 10H is formed on both the + X side and the −X side of the remaining portion R, but either one may be formed. The length of the intersecting portion 12H in the Y direction can be set arbitrarily. Further, a plurality of intersecting portions 12H may be formed on the + X side or the -X side.

  According to the cut portion 10G, when the remaining portion R contracts, the amount of contraction in the X direction is relaxed by opening the intersecting portion 12H as shown by the dotted line in FIG. Prevent or suppress the decrease. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material.

  As shown in FIG. 10 (B), the cuts 10I and 10J are formed so as to extend from the respective outer peripheries of the products M1 and M2 in a direction intersecting the longitudinal direction of the remaining portion R. The cutouts 10I and 10J have intersecting portions 12I and 12J which are continuous with the gap C. The intersecting portions 12I and 12J are also extended portions extending from the outer circumferences of the products M1 and M2. In FIG. 10B, the cut portions 10I and 10J are formed on both the + X side and the −X side of the remaining portion R, but either one may be formed. Further, the lengths of the intersecting portions 12I and 12J in the Y direction can be arbitrarily set, and may be the same length or different lengths. Further, a plurality of intersecting portions 12I and 12J may be formed on the + X side or the −X side.

  According to the cut portions 10I and 10J, when the remaining portion R contracts, the contraction amount in the X direction is relaxed by opening the intersecting portions 12I and 12J, respectively, as shown by the dotted line in FIG. 10 (B). Prevents or suppresses C from decreasing in the X direction. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material.

  As shown in FIG. 10 (C), the notch 10K is formed at a position spaced apart on the + X side and the −X side with respect to the remaining portion R between the products M1 and M2, in the direction intersecting the longitudinal direction of the remaining portion R. It The cut portion 10K has an intersecting portion 12K separated from the gap C. Although the cut portion 10K is formed on both the + X side and the −X side of the remaining portion R in FIG. 10C, either one may be formed. The length of the intersecting portion 12K in the Y direction can be set arbitrarily. Further, the length by which the intersecting portion 12K is separated from the remaining portion R in the X direction can be set arbitrarily. Further, a plurality of intersecting portions 12K may be formed on the + X side or the -X side.

  According to the cut portion 10K, when the remaining portion R contracts, the amount of contraction in the X direction is relaxed by opening the intersecting portion 12K as shown by the dotted line in FIG. Prevent or suppress the decrease. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material.

  As shown in FIG. 11 (A), the cut portions 10L and 10M are extended portions 11L and 11M, which extend from the outer peripheries of the products M1 and M2, respectively, continuous with the gap C and extend parallel to the longitudinal direction of the remaining portion R, and the extended portion 11L. , 11M, and a crossing portion 12L in the crossing direction with respect to the longitudinal direction of the remaining portion R. The extended portions 11L and 11M are formed in a state of being deviated from the direction in which the clearance C on the + Y side and the −Y side of the remaining portion R extends. In addition, in FIG. 11A, the cut portions 10L and 10M are formed on the −X side of the remaining portion R, but may be formed on the + X side, or may be formed on both the + X side and the −X side. Good. The length of the intersecting portion 12L in the Y direction can be set arbitrarily. Further, the intersecting portion 12L may be connected to either one or both of the extending portions 11L and 11M. Further, a plurality of intersecting portions 12L may be formed.

  According to the cut portions 10L and 10M, the remaining portion R is extended in the X direction by the extension portions 11L and 11M and further has the intersecting portion 12L. Therefore, when the remaining portion R contracts, the intersecting portion 12L opens (see FIG. The contraction amount in the X direction is relaxed by (see the dotted line in A)) and the like, and the gap C is prevented or suppressed from decreasing in the X direction. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material. The intersecting portion 12L may not be formed.

  As shown in FIG. 11 (B), the cut portion 10N extends from the outer periphery of the product M1 to the gap C and extends from the + Y side end of the extension portion 11N1 extending in the direction intersecting the longitudinal direction of the remaining portion R. It has an extending portion 11N2 extending in the longitudinal direction of the remaining portion R and an intersecting portion 12N extending from a part of the extending portion 11N2 in a direction intersecting the longitudinal direction of the remaining portion R. The extended portion 11N1 is also an intersecting portion extending in a direction intersecting the longitudinal direction of the remaining portion R. Further, the cut portion 10P has an extended portion 11P which is continuous with the gap C from the outer periphery of the product M2 and extends parallel to the longitudinal direction of the remaining portion R. The extended portions 11N2 and 11P are formed in a state of being displaced from the extending direction of the gap C on the + Y side and the −Y side of the remaining portion R. In addition, in FIG. 11B, the cut portions 10N and 10P are formed on the −X side of the remaining portion R, but may be formed on the + X side, or may be formed on both the + X side and the −X side. Good. Further, the length of the intersecting portion 12N in the Y direction can be set arbitrarily. Further, the intersecting portion 12N may be formed so as to extend from a part of the extending portion 11P. Further, a plurality of intersecting portions 12N may be formed.

  According to the cut portions 10N and 10P, the remaining portion R is extended in the X direction by the extension portions 11N2 and 11P and further has the intersecting portion 12N. Therefore, when the remaining portion R contracts, the intersecting portion 12N opens (see FIG. The contraction amount in the X direction is relaxed by (see the dotted line in B)) or the like, and the gap C is prevented or suppressed from decreasing in the X direction. As a result, the products M1 and M2 are not strongly gripped by the residual material, and the products M1 and M2 can be easily separated from the residual material. The intersection portion 12N may not be formed.

<Machining program generator>
FIG. 12 is a functional block diagram showing an example of the machining program generation device 100 according to the embodiment. The processing program generation device 100 generates a processing program used in the laser processing machine 1. The processing program is a program for operating the laser head 2 and the like to form at least one product in the work W. The machining program generation device 100 includes a control unit 101, a storage unit 102, an input unit 103, and a display unit 104. The processing program generation device 100 is realized by, for example, a desktop or notebook personal computer, a tablet mobile terminal, or the like.

  The control unit 101 has an arithmetic processing unit such as a CPU (Central Processing Unit) and a communication interface for transmitting and receiving electronic information. This communication interface may be either a wired system or a wireless system. The control unit 101 has a determination unit 105. The determination unit 105 determines whether to form a cut portion in the work W to be processed by the laser processing machine 1, similar to the determination unit 6 in the above embodiment, for example. The storage unit 102 stores various kinds of information such as various programs such as a machining program generated by the control unit 101 and a generation program necessary for generating the machining program. In addition, the storage unit 102 may store, for example, information regarding the movement of the laser head 2 and information regarding the material and thickness of the work W.

  The input unit 103 is used, for example, to input information necessary for processing the work W in the laser processing machine 1. Examples of such information include information regarding the shape of the product. As the input unit 103, for example, a keyboard or a mouse is used. As the input unit 103, for example, a touch panel formed on the display unit 104 may be used. The display unit 104 displays the calculation result of the control unit 101, the information stored in the storage unit 102, the information input by the input unit 103, the information acquired by the control unit 101 via the communication interface, and the like. A liquid crystal display or the like is used as the display unit 104, for example.

  The processing program generation device 100 may be connected to the bus 106 via a communication line, or may be capable of communicating with the laser processing machine 1 and the host controller 200 which are also connected to the bus 106. As a result, the generated machining program can be easily sent to the laser processing machine 1 and the host controller 200. For example, even when the machining program is generated at a location distant from the laser processing machine 1, the data can be quickly sent. Further, the processing program generation device 100 may be arranged in a stand-alone manner. In this case, the generated processing program may be stored in a portable storage medium such as a USB memory and sent to the laser processing machine 1 or the host controller 200 via the storage medium.

  Next, the operation of generating a machining program using the machining program generator 100 configured as described above will be described. FIG. 13 is a flowchart showing the flow of processing in the machining program generation device 100. As shown in FIG. 13, first, information on the shape of the product formed by the laser processing machine 1 is input (step S21). The input of the product shape in step S21 may be performed by selecting the design information of the product stored in the storage unit 102, in addition to the input by the operator through the input unit 103. In addition, the design information of the product may be obtained by downloading from the storage unit of the host controller 200 or another control device by wireless or wired. Further, in step S21, for example, the material and thickness of the work W may be input.

  Next, the control unit 101 generates a machining program based on the input information regarding the product shape (step S22). The generated machining program is stored in the storage unit 102, for example.

  Next, the determination unit 105 reads the machining program stored in the storage unit 102, and determines, for example, the material and thickness of the work W, the length (dimension in the longitudinal direction), and the width (dimension in the lateral direction) of the remaining portion R. Based on at least one of them, it is determined whether or not the cut portion is formed (step S23). This step S23 performs almost the same process as step S02 shown in FIG. For example, when the work W of a predetermined material has a predetermined thickness, the determination unit 105 determines that the width of the remaining portion R is smaller than the predetermined value and the length of the remaining portion R in the longitudinal direction is larger than the predetermined value. Since the product M1 or the product M2 is gripped due to the contraction of the remaining portion R, it is determined that the cut portion is necessary. However, this determination by the determination unit 6 is an example, and the determination may be made by another method.

  When the determination unit 105 determines that the cut portion is necessary (YES in step S23), the control unit 101 adds a step of forming the cut portion to the machining program (step S24). The control unit 101 sets the shape of the cut portion to be formed based on, for example, the material and thickness of the work W and the width and length of the remaining portion R. The shape of the cut portion may be selected from the shapes stored in advance in the storage unit 102, or the size and shape of the cut portion may be calculated. The machining program to which the step of forming the cut portion is added is stored in, for example, the storage unit 102. When the determination unit 105 determines that the cut portion is not necessary (NO in step S23), the cut portion is not added to the machining program.

  This is the end of the generation of the machining program. The generated machining program allows the laser beam machine 1 to execute cutting of the workpiece W. The completed processing program may be sent to the laser processing machine 1 or the host controller 200 via the bus 106 or stored in a portable storage medium according to the operation of the operator.

  As described above, according to the present embodiment, it is possible to easily generate a machining program in which a cut portion is added so that the product can be easily separated from the residual material. The machining program generation device 100 described above is not limited to including the determination unit 105. For example, a machining program may be generated by uniformly adding notches to the input product shape.

  Although the embodiments have been described above, the present invention is not limited to the above description, and various modifications can be made without departing from the scope of the present invention. For example, the shape of the cut portion is not limited to the shape described in the above-described embodiment and modification, and may be another shape. For example, the cut portion is not limited to a straight line shape, and may have a shape including a curved line or a bend. For example, the extended portion 11A and the like may be curved instead of being linear, and a bent portion may be partially formed. Further, other cuts may be added in addition to the extension portion 11A and the like and the intersection portion 12A. Further, the notch may be formed by appropriately combining the above-described embodiments and modified examples.

L ... Laser light W ... Work S ... Spot M1, M2, M3 ... Product R, R1 ... Remaining C, C1 to C8 ... Gap M1a, M2a, M3a ... Corner M1b, M2b, M3b, M1c, M2c, M3c ... Piece Part Wa ... End part 1 ... Laser processing machine 2 ... Laser head 3 ... Laser light source 4 ... Head moving device 5 ... Control device 6 ... Judgment part 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I, 10J 10K, 10L, 10M, 10N, 10P ... Notches 11A, 11B, 11C, 11D, 11E, 11L, 11M, 11N1, 11N2 ... Extensions 12A, 12B, 12C, 12F, 12G, 12H, 12I, 12J, 12K , 12L, 12N ... Intersection 100 ... Machining program generator 101 ... Control unit 102 ... Storage unit 103 ... Input unit 10 4 ... Display unit 105 ... Judgment unit 106 ... Bus 200 ... Host controller

Claims (9)

A controller of a laser processing machine that relatively moves a work and a laser head to cut a part of the work by laser light emitted from the laser head to form a product,
A cut portion including a spring-shaped intersecting portion that is cut in a direction intersecting the longitudinal direction of the remaining portion according to the remaining portion formed between the products or between the product and the work end portion. A control device for a laser processing machine, which forms a workpiece on the workpiece. The Switching Operation addition unit includes an extension portion that is cut extending from the outer periphery of said product,
The controller of the laser beam machine according to claim 1, wherein the intersecting portion is cut from a part of the extension portion.   The control device of the laser processing machine according to claim 2, wherein the extension portion is cut so as to extend from one of the one of the corner portions of the product that extends along the longitudinal direction of the remaining portion.   The control of a laser beam machine according to claim 2 or 3, wherein when the extension portions are cut in parallel from two of the products, the respective intersection portions are alternately arranged along the extension portions. apparatus. A controller of a laser processing machine that relatively moves a work and a laser head to cut a part of the work by laser light emitted from the laser head to form a product,
Depending on the remaining portion formed between the products or between the product and the work end portion, an extension portion that extends from the outer periphery of the product and is cut, and cut in a direction intersecting the longitudinal direction of the remaining portion. Forming a notch portion including at least one of the intersecting portions formed on the work,
A controller for a laser beam machine, comprising: a determination unit that determines whether or not to form the cut portion based on at least one of the material and thickness of the work, the length of the remaining portion, and the width.   The control device of the laser processing machine according to claim 5, wherein when the determination unit determines that the cut portion is formed, the cut portion is added to or modified from the previously acquired processing program. A laser head that moves relative to the work and emits laser light to cut the work,
A laser processing machine comprising: the control device according to any one of claims 1 to 6. Forming a product by cutting a part of the work by laser light emitted from the laser head by moving the work and the laser head relatively,
A cut portion including a spring-shaped intersecting portion that is cut in a direction intersecting the longitudinal direction of the remaining portion according to the remaining portion formed between the products or between the product and the work end portion. Forming a workpiece on the workpiece. Forming a product by cutting a part of the work by laser light emitted from the laser head by moving the work and the laser head relatively,
Depending on the remaining portion formed between the products or between the product and the work end portion, an extension portion that extends outward from the outer periphery of the product and is cut, and in a direction intersecting the longitudinal direction of the remaining portion. Forming a cut portion including at least one of intersecting portions to be cut in the work,
Determining whether to form the cut portion based on at least one of the material and thickness of the workpiece, the length of the remaining portion, and the width of the remaining portion.

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