JP6410649B2 - Laser processing machine and work jig for laser processing machine - Google Patents

Description

  Regarding the laser processing machine and the work jig for the laser processing machine, in particular, by moving the work support member that supports the part facing the processing head from the lower surface of the work following the stage that moves integrally with the processing head, The present invention relates to a laser processing machine capable of maintaining high processing accuracy by a processing head and a work jig for a laser processing machine.

  Conventionally, a laser that irradiates a focused laser beam onto a thin metal plate (workpiece) with a plate thickness of about 0.03 mm to 0.5 mm and injects an assist gas to perform high-precision, high-quality fine cutting. Processing machines are known. The workpiece to be processed is fixed in a tensioned state on a workpiece jig separate from the laser processing machine, and the workpiece jig to which the workpiece is fixed is placed on the laser processing machine, and laser processing is performed on the workpiece. Applied.

  Regarding the work jig used in this laser beam machine, the following Patent Document 1 describes the following work fixing jig. That is, a workpiece support member that can move along the vertical frame is spanned between the vertical frames of the rectangular frame, and the workpiece support member is used to process the laser beam machine. A portion facing the head is supported from the lower surface of the workpiece. In addition, two machining head follower members extending between the vertical frames with the machining head interposed therebetween are connected to the workpiece support member. Therefore, when the machining head moves along the vertical frame, the machining head comes into contact with the machining head tracking member, and the workpiece support member connected to the machining head tracking member follows the movement of the machining head. It is comprised so that it may move to the position which opposes.

JP 2013-230503 A

However, in the workpiece fixing jig described in Patent Document 1, the workpiece support member is moved to a position facing the machining head by bringing the machining head into contact with the machining head following member. However, due to the pressure received from the processing head follow-up member, the processing head may be displaced, which may adversely affect the processing accuracy of the processing head.
In order to solve the above-described problems, the present invention enables a workpiece support member that supports a portion facing the machining head from the lower surface of the workpiece to move following a stage that moves integrally with the machining head, thereby It is an object of the present invention to provide a laser beam machine capable of maintaining high machining accuracy and a workpiece jig for the laser beam machine.

The laser beam machine of the present invention is
A processing head for irradiating a laser beam toward one surface of a thin plate workpiece is provided, and the workpiece is subjected to laser processing by the laser beam irradiated from the processing head, and has a rectangular shape for gripping the workpiece. A frame, and a work support member that is bridged between the pair of vertical frames and supports a portion facing the processing head from the other surface of the work so as to be movable along the pair of vertical frames of the frame. The work jig having the work jig mounted thereon is detachably placed, and the work jig placed on the work placement section is spaced from the one surface of the work by a predetermined interval. Extending across a pair of vertical frames, the processing head is supported to be movable between the pair of vertical frames, and is supported to be movable along the pair of vertical frames integrally with the processing head. The Connecting the stage, the stage and the work support member, and moving the work support member along the pair of vertical frames following the movement of the stage along the pair of vertical frames. And a member.

  According to the laser processing machine of the first aspect, the thin plate workpiece is held by the frame body of the work jig and placed on the placing portion. For the work jig placed on the placement part, a stage is extended across a pair of vertical frames with a predetermined interval between one side of the work. On such a stage, a processing head is supported so as to be movable between a pair of vertical frames. The thin workpiece is subjected to laser processing with laser light emitted from the processing head toward one surface thereof. On the other hand, a workpiece support member is bridged between a pair of vertical frames of the frame body on the workpiece jig, and a portion facing the machining head is supported from the other surface of the workpiece by the workpiece support member. As a result, no slack or sagging occurs in the workpiece, and fluctuations in the workpiece distance (interval between the workpiece and the machining head) are prevented.

  The stage is supported so as to be movable along a pair of vertical frames integrally with the processing head. On the other hand, the workpiece support member of the workpiece jig is configured to be movable along a pair of vertical frames. And this stage and the workpiece | work support member are connected by the connection member. Therefore, when the stage is moved integrally with the machining head along the pair of vertical frames, the workpiece support member is moved along the pair of vertical frames following the movement. That is, the workpiece support member moves following the stage, and the workpiece support member can be moved to a portion facing the machining head without applying pressure to the machining head. Therefore, there is an effect that the machining head is not displaced by the pressure and the machining accuracy by the machining head can be maintained with high accuracy.

  According to the laser beam machine of claim 2, in addition to the effect of the laser beam machine of claim 1, the following effect is obtained. That is, the work support member is provided with a standing wall extending from at least one of the pair of vertical frames and the edge of the work. From the stage, a vertical wall is provided at a position facing the standing wall. An opposing wall is disposed opposite the vertical wall, and a space is formed between the vertical wall and the opposing wall in which the standing wall is inserted when the work jig is pushed up by the lift device. Therefore, when moving the stage along a pair of vertical frames, the vertical wall or the opposing wall abuts against the vertical wall standing from the work support member, and the vertical wall or the opposing wall presses the vertical wall to support the workpiece. The member can be moved following the stage. Therefore, for example, instead of the opposing wall, a connecting part that connects the vertical wall and the standing wall is prepared, and the stage and the work support member are connected with a simpler structure than connecting the vertical wall and the standing wall with the connecting part. Thus, there is an effect that the work supporting member can be moved following the stage.

  According to the laser beam machine of claim 3, in addition to the effect of the laser beam machine of claim 2, the following effect can be obtained. That is, a notch portion having a distal end opened at a substantially central portion in a direction crossing the moving direction of the stage is formed at the distal end portion of the standing wall. An insertion member is bridged between the vertical wall and the opposing wall, and when the work jig is pushed up by the lift device, the insertion member is inserted into the notch. Therefore, it is possible to suppress the workpiece support member from being displaced in a direction crossing the moving direction of the stage, and it is possible to smoothly move the workpiece supporting member following the movement of the stage.

  According to the laser beam machine of claim 4, in addition to the effect of the laser beam machine of claim 2 or 3, the following effect is obtained. That is, in a state where the work jig is placed on the placement portion, the opposing wall is provided above the tip of the standing wall, and the hanging wall is suspended to a position where it overlaps with the standing wall. Therefore, even if a work jig is inserted from the insertion port, the vertical wall is prevented from entering further into the interior than the vertical wall, and the vertical wall is positioned closer to the insertion port than the vertical wall. Therefore, when the work jig is inserted from the insertion port and the stage is moved toward the insertion port by the moving means in a state where the work jig is mounted on the mounting portion, the vertical wall on the insertion port side becomes the vertical wall. It is pushed and moved to a predetermined position where the movement of the workpiece support member is restricted. And since the opposing wall is provided on the insertion opening side with respect to the vertical wall, when the stage is moved to a predetermined position, the space formed between the vertical wall and the opposing wall is positioned above the standing wall. . Therefore, when the stage is moved to a predetermined position, when the lift device is operated by the lift means and the work jig is pushed up to the processing head side, the standing wall is inserted into the space between the vertical wall and the opposing wall. Therefore, after that, the workpiece support member can be moved following the movement of the stage. That is, since the alignment between the space formed between the vertical wall and the opposing wall and the standing wall inserted into the space can be automatically performed, the work support member can follow the movement of the stage without trouble. There is an effect.

  According to the workpiece jig for a laser beam machine according to claim 5, the same effect as the laser beam machine according to claim 1 can be obtained.

It is a perspective view which shows a laser beam machine and a workpiece jig. It is a top view of a workpiece jig. (A) is the fragmentary sectional view of the workpiece jig in the IIIa-IIIa sectional line shown in FIG. 2, (b) is the partial front view of the workpiece jig 2 seen from the direction of arrow IIIb shown in FIG. . It is a front view of a laser beam machine. It is a fragmentary sectional view of the laser beam machine in the VV sectional line shown in FIG. (A) is a block diagram which shows the electrical structure of the laser beam machine 1, (b) is a flowchart which shows a process. It is a figure which shows a mode that the vertical wall of a laser beam machine and the standing wall of a workpiece jig are connected in time series.

  Embodiments of a laser beam machine 1 and a workpiece jig 2 for a laser beam machine (hereinafter referred to as “work jig 2”) according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a laser beam machine 1 and a work jig 2. In the figure, an arrow X direction and an arrow Y direction are parallel to the horizontal plane and orthogonal to each other, and an arrow Z direction indicates a direction orthogonal to the horizontal plane.

  The laser beam machine 1 and the work jig 2 of the present embodiment are particularly provided with a work support member that is provided so as to be movable along the first and second vertical frames 11 and 12 of the work jig 2 and supports the work W from the lower surface. 17 is moved in the direction of the arrow Y (the direction along the first and second vertical frames 11 and 12) following the stage 40 of the laser processing machine 1, so that the processing accuracy by the processing head 50 is maintained with high accuracy. Is.

  The laser processing machine 1 is a processing apparatus that irradiates a workpiece W fixed to the workpiece jig 2 with a laser beam from the processing head 50 to form a fine through hole in the workpiece W. The workpiece W to be processed is a stainless plate for masking when solder is applied to a substrate of an electronic component, and is a rectangular thin plate having a plate thickness of 0.03 mm to 0.5 mm. The length of the workpiece W in the longitudinal direction is about 600 mm, and the length in the direction orthogonal to the longitudinal direction of the workpiece W is about 480 mm. The work jig 2 is fixed in a state where a tension is applied by pulling the work W. The workpiece jig 2 is carried to the laser processing machine 1 in a state where the workpiece W is fixed, and is placed on the placement unit 30 of the laser processing machine 1.

  First, the workpiece jig 2 will be specifically described with reference to FIGS. 2 and 3. 2 is a plan view of the work jig 2, FIG. 3A is a partial cross-sectional view of the work jig 2 taken along the line IIIa-IIIa shown in FIG. 2, and FIG. It is the fragmentary front view of the workpiece jig 2 seen from the arrow IIIb direction shown in FIG.

  As shown in FIG. 2, the work jig 2 is a frame whose outer shape is formed in a rectangular shape, and a first vertical frame 11 and a second vertical frame 12 that extend in parallel to each other, and the first vertical frame 11. And the second vertical frame 12, and has a fixed side frame 13, a movable side frame 14, and a horizontal frame 15 that extend in parallel to each other.

  Both ends of the first and second vertical frames 11 and 12 are connected to the fixed-side horizontal frame 13 and the horizontal frame 15 via bolts (not shown). The longitudinal length of the first and second vertical frames 11 and 12 is about 660 mm. The first and second vertical frames 11 and 12 are formed with guide rails 11a and 12a for sliding a slide member 18 described later along the first and second vertical frames 11 and 12, respectively.

  The fixed lateral frame 13, the movable lateral frame 14 and the lateral frame 15 have a length in the longitudinal direction of about 500 mm. The fixed side horizontal frame 13 is a clamp plate that holds one end side of the workpiece W, and its position is fixed. The movable side frame 14 is a clamp plate that holds the other end of the work W, and has guide members 14a at both ends. The guide member 14 a is slidably attached along the first and second vertical frames 11 and 12. The movable lateral frame 14 is slidable along the first and second vertical frames 11 and 12 as the guide member 14 a slides along the first and second vertical frames 11 and 12. The movable lateral frame 14 is slidable toward the end of the first and second vertical frames 11 and 12 opposite to the end connected to the fixed lateral frame 13. However, the lateral frame 15 is connected to the opposite end. Therefore, the movable frame 14 can be prevented from falling off from the opposite end.

  The distance between the movable side horizontal frame 14 and the horizontal frame 15 is adjusted by a screw 16 that passes through the horizontal frame 15 and is screwed to the movable side horizontal frame 14. It is configured to be possible. As a result, an appropriate tension can be applied to the workpiece W, and it is possible to prevent the workpiece W from being loosened, torn or stretched during laser processing.

  Specifically, first, one end side of the workpiece W is gripped by the fixed lateral frame 13, and the other end side of the workpiece W is gripped by the movable lateral frame 14. Next, the screw 16 is rotated to slide the movable side lateral frame 14 away from the fixed side lateral frame 13 via the guide member 14a. At this time, the rotation amount of the screw 16 is adjusted so that an appropriate tension is applied to the workpiece W. In this way, the workpiece W can be carried to the laser processing machine 1 while maintaining a state in which an appropriate tension is applied to the workpiece W.

  The workpiece jig 2 is connected (fixed) to the fixed side frame 13, the movable side frame 14, two workpiece support members 17 extending in parallel with the horizontal frame 15, and both ends of the workpiece support member 17. Each slide member 18 and a stop block 24 for restricting the slide of each slide member 18 are provided.

  The workpiece support member 17 is for supporting at least the lower surface of a portion of the workpiece W that faces the machining head 50. The workpiece support member 17 is disposed on the lower surface side of the workpiece W, and is longer than the lateral length of the workpiece W so as to support the entire lateral direction of the workpiece W. The two workpiece support members 17 are arranged in parallel with a predetermined amount away from the laser beam irradiated from the machining head 50 in the arrow Y direction (see FIG. 1) so as to sandwich the tip of the ejection port of the machining head 50. Has been. Thereby, it is possible to prevent the melt (dross) generated by the laser processing from falling into a space formed between the two workpiece support members 17 and adhering to the workpiece support member 17.

  The two workpiece support members 17 are provided because it is easier to support the lower surface of the workpiece W facing the machining head 50 than one workpiece support member 17. Although the work support member 17 has a round bar shape, the shape of the work support member 17 can be changed as appropriate, and the cross section may be a square or the upper side may be a flat triangle. The work support member 17 may be plate-shaped.

  As shown in FIG. 3A, the work support member 17 has a double pipe structure including a shaft pipe 17a and an outer pipe 17b that encloses the shaft pipe 17a. The shaft pipe 17a is longer than the outer pipe 17b, and both ends thereof are connected to the slide member 18. The outer pipe 17b is rotatably connected to the shaft pipe 17a via a bearing (not shown).

  Therefore, the contact resistance between the workpiece support member 17 and the lower surface of the workpiece W can be reduced, and the workpiece support member 17 can hardly pull the burrs on the lower surface of the workpiece W, and scratches generated on the lower surface of the workpiece W can be almost eliminated. Therefore, it is possible to prevent the quality of the laser-processed workpiece W from being deteriorated, and to greatly reduce the time for the polishing operation performed on the scratches, thereby increasing the production efficiency of the workpiece W. In addition, since the contact resistance between the workpiece support member 17 and the lower surface of the workpiece W can be reduced, the slide along the first and second vertical frames 11 and 12 of each slide member 18 can be smoothly performed.

  As shown in FIG. 3A, each slide member 18 slides the work support member 17 along the first and second vertical frames 11 and 12. Each slide member 18 includes a connecting body 19 in which both ends of each work support member 17 are connected, and a moving body 20 (see FIG. 2) attached to the guide rails 11a and 12a of the first and second vertical frames 11 and 12. And a connecting plate 21 connected to the upper surface of the connecting body 19.

  The connecting body 19 is formed in a substantially rectangular parallelepiped shape, has two mounting holes 19a extending in the vertical direction, and a coil spring 19b is disposed in each mounting hole 19a. The coil spring 19b is slightly compressed between the shaft pipe 17a and the bottom portion of the mounting hole 19a, and urges the shaft pipe 17a upward. Thereby, the work support member 17 is slightly biased toward the lower surface of the work W. Therefore, the state where the vicinity of the lower surface of the work W supported by the work support member 17 is always stretched can be maintained. As a result, even if laser processing advances and the number of holes and openings processed in the workpiece W increases, the focus of the laser is difficult to shift, and the accuracy of laser processing can be stabilized.

  The moving body 20 (refer to FIG. 2) can be linearly moved along the guide rails 11a and 12a by using rolling of a ball (not shown). That is, the movable body 20 and the guide rails 11a and 12a form a linear guide mechanism. The moving body 20 is fixed to the connecting body 19 by four bolts 20a (see FIG. 3A).

  The connection plate 21 connects the workpiece support member 17 and the stage 40 of the laser processing machine 1. As shown in FIG. 3A, the connecting plate 21 has a base wall 21a fixed to the upper surface of the connecting body 19 and a standing wall 21b erected from one end of the base wall 21a. The base wall 21a closes the attachment hole 19a to which the coil spring 19b is attached, and is fixed to the upper surface of the coupling body 19 with bolts 21c. The standing wall 21b is erected and bent substantially at a right angle to the base wall 21a. Therefore, desired rigidity is ensured in the standing wall 21b.

  Further, as shown in FIG. 3 (b), the standing wall 21 b has a notch portion 22 whose front end is opened and a holding wall 23 that sandwiches the notch portion 22. Although the details will be described later, as shown in FIG. 5, the standing wall 21b is disposed so as to face the suspended wall 48 suspended from the stage 40 of the laser beam machine 1, and the suspended wall 48 and the bolt 49a. It is interposed between the opposing walls 49 (space). As a result, the workpiece support member 17 connected to the slide member 18 including the standing wall 21b is connected to the stage 40 of the laser beam machine 1.

  In addition, as shown in FIG. 2, the stop block 24 is provided between the first end of the guide rails 11 a and 12 a formed on the first and second vertical frames 11 and 12 and the movable side horizontal frame 14. The second vertical frames 11 and 12 are fixed by bolts 24a. A coil spring 24b is attached to the surface of the stop block 24 opposite to the movable side frame 14 side, and the impact when each slide member 18 abuts is absorbed by the coil spring 24b.

  Next, the laser beam machine 1 will be specifically described with reference to FIGS. 1, 4, and 5. FIG. 4 is a front view of the laser processing machine 1. FIG. 5 is a partial cross-sectional view of the laser beam machine 1 taken along the line VV of FIG.

  As shown in FIG. 1, the laser beam machine 1 is mainly formed with a mounting portion 30 on which the above-described work jig 2 is mounted, and a portal shape that straddles the mounting portion 30, and slides in the arrow Y direction. The stage 40 is configured to be supported, and the machining head 50 is supported on the stage 40 so as to be slidable in the direction of the arrow X and irradiates a laser beam.

  As shown in FIG. 1, the work jig 2 is inserted into the mounting portion 30 from the fixed side horizontal frame 13 side in the arrow Y direction. The opening through which the work jig 2 is inserted into the placement unit 30 is referred to as an insertion port. When the work jig 2 is placed on the placement portion 30, the first and second vertical frames 11 and 12 of the work jig 2 are parallel to the arrow Y direction, and the fixed side frame 13 and the movable side frame 14 are parallel to each other. The horizontal frame 15 is placed in parallel with the arrow X direction.

  As shown in FIG. 4, the mounting unit 30 includes a first mounting unit 31 having a first mounting surface 31 a on which the first vertical frame 11 of the work jig 2 is mounted, and a second vertical frame 12. It is comprised by the 2nd mounting part 32 which has the 2nd mounting surface 32a mounted. The first and second placement surfaces 31a and 32a extend along the arrow Y direction in parallel with each other.

  The first mounting portion 31 is formed with a first receiving surface 31b with a predetermined interval in the direction of arrow Z between the first mounting surface 31a and the second mounting portion 32. A second receiving surface 32b is formed at a predetermined interval in the arrow Z direction between the mounting surface 32a. When performing laser processing on the workpiece W, the work jig 2 mounted on the first and second mounting surfaces 31 a and 32 a is provided with an air cylinder 60 provided below the mounting portion 30. Are pushed up to the positions of the first and second receiving surfaces 31b and 32b, and laser processing is performed in that state.

  As shown in FIGS. 1 and 5, the stage 40 includes a main body 41 extending in the direction of the arrow X with a predetermined interval between the work jig 2 mounted on the mounting unit 30, and the main body thereof. It is comprised by the leg part 42 hung down from the both ends of the part 41. As shown in FIG.

  A through hole 43 extending in the arrow X direction is opened at the center of the upper surface of the main body 41, and two guide rails 44 extending in the arrow X direction on both sides sandwiching the through hole 43 in the arrow Y direction. 44 extend in parallel. A table 51 connected to the machining head 50 is bridged between the two guide rails 44 and 44 via sliders 52 and 52 with the machining head 50 inserted into the through hole 43. That is, a linear guide mechanism is formed by the two guide rails 44 and 44 and the sliders 52 and 52. In addition, an X-axis linear motor 75 serving as a drive source for moving the table 51 (processing head 50) in the arrow X direction by the linear guide mechanism is provided. As shown in FIG. 5, the X-axis linear motor 75 includes a stator 75a in which magnetic poles are alternately arranged in parallel, and a mover 75b in which a conducting wire is wound around a core.

  The stators 75a are opposed to each other in a casing 53 that is formed in a U-shape in cross-section and extends in the direction of the arrow X between the guide rail 44 and the through-hole 43 on the upper surface of the main body 41 of the stage 40. It is arranged on the inner surface. The mover 75 b extends between the stators 75 a and is disposed on the inner surface of the table 51. By driving the X-axis linear motor 75, the table 51 (processing head 50) moves in the arrow X direction along the guide rails 44 and 44. That is, the stage 40 supports the processing head 50 so as to be movable in the direction of the arrow X.

  4, sliders 45, 45 are fixed to the lower surface of the leg portion 42 of the stage 40, and the sliders 45, 45 are in the direction indicated by the arrow Y (the direction passing through the paper surface) with the placement portion 30 in between. ) Are extended to two guide rails 46, 46. That is, a linear guide mechanism is formed by the two guide rails 46 and 46 and the sliders 45 and 45. Further, a Y-axis linear motor 76 serving as a drive source for moving the stage 40 in the arrow Y direction by the linear guide mechanism is provided. The Y-axis linear motor 76 includes a stator 76a in which magnetic poles are alternately arranged in parallel, and a mover 76b in which a conducting wire is wound around a core.

  The stator 76a extends over the entire length of the guide rails 46, 46 in parallel with the guide rails 46, 46 with the stage 40 side facing the inner surfaces of the support walls 80, 80 rising outside the guide rails 46, 46. Has been placed. The mover 76b is disposed on the upper outer surface of the stage 40, that is, on both sides of the leg portion 42, at a position facing the stator 76a. By driving the Y-axis linear motor 76, the stage 40 moves in the direction of the arrow Y along the guide rails 46 and 46 together with the processing head 50. That is, the stage 40 is supported so as to be movable in the arrow Y direction integrally with the processing head 50.

  Further, as shown in FIG. 5, the main body 41 of the stage 40 is provided with reinforcing ribs 47, 47 extending from the inner surface of the upper wall on both sides of the through-hole 43 along the arrow X direction. 47 and 47, a hanging wall 48 is suspended from a reinforcing rib 47 on the insertion opening side of the work jig 2 (the movable side lateral frame 14 side of the work jig 2). The hanging wall 48 is fixed to the reinforcing rib 47 with bolts 47a.

  The hanging wall 48 is suspended at a position facing the standing wall 21b in a state where the workpiece jig 2 is placed on the placing portion 30, and in the middle of the hanging wall 48 (on the side of the workpiece jig 2 on the movable side). A facing wall 49 is connected to the hanging wall 48 on the frame 14 side via a bolt 49a with a predetermined interval. Further, the tip 48 a of the hanging wall 48 that hangs to the work jig 2 side from the opposing wall 49 overlaps with the tip of the standing wall 21 b in the height direction when the work jig 2 is placed on the placement unit 30. It is drooping to the position to do.

  Therefore, by pushing the work jig 2 toward the machining head 50 by the air cylinder 60 with the tip 48a of the vertical wall 48 abutting against the vertical wall 21b, the vertical wall 21b is formed between the vertical wall 48 and the opposing wall 49. In the meantime, the notch 22 of the standing wall 21b (refer to the inside of the round frame in FIG. 3B and FIG. 4) can be interposed in a state where the bolt 49 is fitted. Thereby, the work support member 17 connected to each slide member 18 on which the standing wall 21b is erected can be moved in the arrow Y direction following the movement of the stage 40 in the arrow Y direction. Accordingly, the workpiece support member 17 can be moved in the direction of the arrow Y without applying pressure to the processing head 50. Therefore, the processing head 50 is not displaced by the pressure, and the processing accuracy by the processing head 50 is high. Can be maintained. Further, the standing wall 21b is interposed between the vertical wall 48 and the opposing wall 49 in a state where the bolt 49a is inserted into the notch 22 (see the inside of the round frame in FIG. 3B and FIG. 4). The holding wall 23 erected on both sides of the notch 22 suppresses the displacement in the direction of the arrow X perpendicular to the direction of the arrow Y, and smoothly moves the work support member 17 following the movement of the stage 40. Can do.

  The processing head 50 is a device that irradiates laser light. The processing head 50 is formed in a cylindrical shape, and laser light is introduced from above, and is condensed by a condensing lens that is a convex lens, and the condensed laser light is condensed. The workpiece W is irradiated with laser light from a conical cylindrical nozzle arranged coaxially with the lens, and the workpiece W is subjected to laser processing.

  As described above, the machining head 50 can be slid in the arrow X direction relative to the stage 40 by driving the X-axis linear motor 75. In this case, since the length of the work support member 17 is longer than the length of the work W in the lateral direction, the work support member 17 can always support the lower surface of the portion facing the machining head 50. Further, when the machining head 50 moves in the direction of the arrow Y integrally with the stage 40, the workpiece support member 17 moves in the direction of the arrow Y following the stage 40. The lower surface of the opposing part can be supported. Thus, regardless of the movement of the machining head 50, the lower surface of the portion facing the machining head 50 can be supported by the workpiece support member 17, and there are many holes and openings machined into the workpiece W as the laser machining progresses. Even if it becomes, the work W does not sag or sag. For this reason, the fluctuation | variation of a work distance can be prevented and the precision of laser processing can be stabilized.

  FIG. 6A is a block diagram showing an electrical configuration of the laser processing machine 1. The laser processing apparatus 1 is mainly composed of a CPU 71, ROM 72, RAM 73, operation panel 74, X-axis linear motor 75, Y-axis linear motor 76, air compressor 77, and processing head 50. The CPU 71, the ROM 72, and the RAM 73 are connected to each other via a bus line. The operation panel 74, the X-axis linear motor 75, the Y-axis linear motor 76, the air compressor 77, and the machining head 50 are connected to the CPU 71 via the input / output port 79.

  The CPU 71 controls each function of the laser beam machine 1 and controls each unit connected to the input / output port 79 according to fixed values and programs stored in the ROM 72 and RAM 73. The ROM 72 is a non-rewritable memory that stores a control program executed by the laser beam machine 1, and stores a machining process program 72a that executes a machining process shown in FIG. The RAM 73 is a rewritable volatile memory, and is a memory for temporarily storing various data when each operation of the laser beam machine 1 is executed. The RAM 73 is assigned with a machining pattern memory 73a. Yes. A machining pattern for machining the workpiece W is stored in the machining pattern memory 73a. The workpiece W is laser machined according to the machining pattern stored in the machining pattern memory 73a.

  The operation panel 74 is attached to the side wall of the laser processing machine 1 (see FIG. 1), and a user inputs various instructions such as a processing start instruction to the laser processing machine 1, and the X-axis linear motor 75 is a processing head 50. A Y-axis linear motor 76 is a driving device that moves the stage 40 in the direction of the arrow Y integrally with the machining head 50, and an air compressor 77 is a driving device that drives the air cylinder 60, and the machining head 50. Is an apparatus for irradiating laser light.

  FIG. 6B is a flowchart showing the processing. This process is executed when the workpiece jig 2 that holds the workpiece W is placed on the placement unit 30 of the laser beam machine 1 by the user and an instruction to start machining is received from the user via the operation panel 74. Process.

  The CPU 71 first drives the Y-axis linear motor 76 to move the stage 40 to the set position (S1), determines whether the set position has been reached (S2), and if it has not reached the set position, (S2: No), the process of S1 is repeated, and when the set position is reached (S2: Yes), the air compressor 77 is activated to raise the air cylinder 60 (S3).

  The processing so far will be described with reference to FIG. FIGS. 7A to 7D are schematic views showing a state until the vertical wall 48 and the standing wall 21b are connected by the processing from S1 to S3.

  FIG. 7A shows a state in which the user places the work jig 2 on the placement unit 30 of the laser processing machine 1. As described above, the tip 48a (the work jig 2 side of the opposing wall 49) of the vertical wall 48 overlaps with the tip of the standing wall 21b in the height direction with the work jig 2 placed on the placement part 30. It is drooping to the position to do. Therefore, even if the workpiece jig 2 is inserted from the insertion port, the vertical wall 21b is prevented from entering deeper than the vertical wall 48 by the vertical wall 48. When the workpiece jig 2 is inserted from the insertion port, the vertical wall 21b is It is located closer to the insertion opening (movable side lateral frame 14 side) than the vertical wall 48.

  In the state of FIG. 7A, when an instruction to start machining is input from the user, the CPU 71 drives the Y-axis linear motor 76, directs the stage 40 toward the insertion port side, and sets the position (the slide member 18 is moved). The position is moved to the position where the coil spring 24b of the stop block 24 abuts (in the direction of arrow Y in the figure). The set position is determined in advance as a predetermined position.

  When the stage 40 is moved in the direction of the arrow Y, as shown in FIG. 7B, the tip 48a of the hanging wall 48 suspended from the stage 40 comes into contact with the standing wall 21b. When the standing wall 21b is pushed by the hanging wall 48, the slide member 18 on which the standing wall 21b is erected is dragged and moved to the set position shown in FIG. 7C. In the set position shown in FIG. 7C, the movement of the slide member 18 is restricted, and the space formed between the vertical wall 48 and the opposing wall 49 is positioned above the standing wall 21b.

  When the stage 40 is moved to the set position in this way, as shown in FIG. 7D, the air compressor 77 is driven to push up the work jig 2 to the processing head 50 side (arrow Z direction) by the air cylinder 60, The standing wall 21 b is fitted between the vertical wall 48 and the opposing wall 49. As a result, the workpiece support member 17 connected to each slide member 18 on which the standing wall 21b is set up and the stage 40 on which the hanging wall 48 is set up are connected. Thereafter, the stage 40 moves in the arrow Y direction. The workpiece support member 17 can be moved in the arrow Y direction following this. Accordingly, the workpiece support member 17 can be moved in the direction of the arrow Y without applying pressure to the processing head 50. Therefore, the processing head 50 is not displaced by the pressure, and the processing accuracy by the processing head 50 is high. Can be maintained.

  Returning to FIG. 6B again, the description will be continued. When the process of S3 is completed, the machining pattern stored in the machining pattern memory is read (S4), and machining is started according to the read machining pattern (S5). Then, it is determined whether the processing is finished (S6). If not finished (S6: No), the process of S5 is repeated, and if finished (S7; Yes), this process is finished.

  The laser processing machine 1 according to the present invention has been described above, but the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention.

  In the above embodiment, the case where the vertical wall 48 on the stage 40 side and the standing wall 21b on the workpiece support member 17 side are connected has been described, but the present invention is not limited to this. The standing wall 21b may not be provided, and the hanging wall 48 on the stage 40 side may be directly connected to an appropriate portion of the slide member 18 connected to the work support member 17.

  Moreover, although the said embodiment demonstrated the case where the standing wall 21b was pinched | interposed between the vertical wall 48 and the opposing wall 49, it is not limited to this. For example, the hanging wall 48 and the facing wall 49 may be connected by a bolt or the like, or a U-shaped part may be provided on the hanging wall 48 instead of the facing wall 49.

  Moreover, although the vertical wall 48, the opposing wall 49, and the volt | bolt 49a were provided in the stage side and the standing wall 21b was provided in the workpiece | work support member 17 side in the said embodiment, it was not limited to this. A configuration corresponding to the standing wall 21b may be provided on the stage side, and a configuration corresponding to the hanging wall 48, the opposing wall 49, and the bolt 49a may be provided on the workpiece support member 17 side. Further, the standing wall 21b may be directly connected to the stage 40 without providing the structure corresponding to the vertical wall 48, the opposing wall 49, and the bolt 49a on the stage side.

1 Laser processing machine 2 Work jig (work jig for laser processing machine)
11 First vertical frame (a pair of vertical frames)
12 Second vertical frame (a pair of vertical frames)
13 Fixed side frame (a pair of gripping frames)
14 Movable side frame (a pair of gripping frames)
21b Standing wall 40 Stage 48 Hanging wall (connecting member)
49 Opposite wall (connecting member)
49a bolt (insertion member)
50 Processing head 60 Air cylinder (lift device)
S1 Moving means S3 Lift means W Workpiece

Claims (5)

In a laser processing machine comprising a processing head for irradiating a laser beam toward one surface of a thin workpiece, and performing laser processing on the workpiece by laser light irradiated from the processing head,
A rectangular frame that grips the workpiece and a pair of vertical frames that can be moved along the pair of vertical frames. The portion that is bridged between the pair of vertical frames and that faces the processing head is located on the other side of the workpiece. A placement unit for placing a work jig having a work support member supported from the surface in a detachable manner;
The workpiece jig placed on the placement portion is extended across the pair of vertical frames at a predetermined interval from one surface of the workpiece, and the machining head is attached to the pair of workpieces. A stage that is movably supported between the vertical frames and is supported so as to be movable along the pair of vertical frames integrally with the processing head;
A connecting member that connects the stage and the work support member, and moves the work support member along the pair of vertical frames following the movement of the stage along the pair of vertical frames; Laser processing machine characterized by the above. A lift device that pushes up the workpiece jig toward the machining head;
The workpiece support member includes a standing wall that is erected from at least one of the pair of vertical frames and an edge of the workpiece,
The connecting member is
A hanging wall suspended from the stage at a position facing the standing wall;
Between the vertical wall, when the work jig is pushed up by the lift device, there is provided a facing wall that is disposed to face the vertical wall with a space for inserting the standing wall. The laser beam machine according to claim 1. The standing wall is provided with a notch whose tip is open at a substantially central portion in a direction intersecting the moving direction of the stage at the tip.
The connecting member includes an insertion member that is bridged between the vertical wall and the opposing wall and is inserted into the notch when the work jig is pushed up by the lift device. The laser beam machine according to claim 2, wherein An insertion port for inserting the workpiece jig into the mounting portion;
In the state where the work jig is placed on the placement part, a moving means for moving the stage to the insertion port side to a predetermined position where movement of the work support member is restricted,
Lift means for operating the lift device when the stage is moved to the predetermined position by the moving means and pushing up the work jig toward the processing head;
The hanging wall is suspended to a position where it overlaps with the standing wall in a state where the work jig is placed on the placing portion.
The opposed wall is provided on the insertion port side with respect to the hanging wall, and is provided above the tip of the standing wall in a state where the work jig is placed on the placement portion. Item 4. The laser processing machine according to Item 2 or 3. A processing head that irradiates a laser beam toward one surface of the thin workpiece and one surface of the workpiece are extended in the X direction across the workpiece with a predetermined interval, and in the X direction. The processing head is movably supported, and can be inserted into and removed from a laser processing machine including a stage supported integrally with the processing head so as to be movable in the Y direction perpendicular to the X direction and the vertical direction. In a workpiece jig for a laser beam machine comprising a rectangular frame that is placed and grips the workpiece,
A workpiece support member that is movable between the pair of vertical frames so as to be movable along the pair of vertical frames of the frame body, and that supports a portion facing the processing head from the other surface of the workpiece;
A connecting member that connects the stage and the work support member, and moves the work support member along the pair of vertical frames following the movement of the stage along the pair of vertical frames; A workpiece jig for a laser beam machine characterized by

Images