Work table and laser processing method

Abstract

To provide a work table and a laser beam machining method capable of improving working efficiency.SOLUTION: A work table 10 used for a laser beam machine includes a mounting part 20 attached to the laser beam machine, and a body part 30 detachably attached to the mounting part 20 to machine a workpiece. The main body part 30 includes a base part 31 to which a support member 45 for supporting the workpiece can be attached, and a frame body 40 for surrounding an outer edge of the base part 31 by its inner surface, and the frame body 40 has a height higher than an upper end of the support member 45 attached to the base part 31 and allowing the workpiece to abut thereon. With this configuration, it is possible to replace only the main body portion 30 in a state where the mounting portion 20 is fixed to the laser processing machine 1, so that the work efficiency is improved.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a work table and a laser processing method, and more particularly to a work table used for processing a workpiece with a laser processing machine and a laser processing method. [Background technology]

[0002] BACKGROUND ART Work tables used for processing a workpiece with a laser processing machine include those shown in Patent Documents 1 to 3.

[0003] FIG. 8 is a perspective view showing a conventional work table shown in Patent Document 1, FIG. 9(1) is a cross-sectional view of the conventional work table disclosed in Patent Document 2, (2) is its plan view, and FIG. 10(1) is a plan view of the conventional work table disclosed in Patent Document 3, (2) is its cross-sectional view along line AA.

[0004] 8, the work table 100 of Patent Document 1 is composed of a flat frame body 101 and a shallow body 102 that is arranged across the frame body 101 and has a plurality of protrusions 103 formed on the upper end thereof. During laser processing, a workpiece 104 is placed on the tip of the protrusions 103, and the position of a separated part 105 is held by the plurality of protrusions 103.

[0005] 9, the work table 110 of Patent Document 2 is composed of a workpiece receiver 111 and a support member 113 that is detachable from a groove 112 formed in the workpiece receiver 111. During laser processing, a workpiece 114 is placed on the upper end of the support member 113.

[0006] 10, the work table 120 of Patent Document 3 is composed of a base 121 and a support member 123 that can be attached to and detached from a plurality of recesses 122 formed in the base 121. During laser processing, a work 124 is placed on the upper end of the support member 123 and is fastened to a fixing hole (not shown) formed in the work 124 with a work fixing tool 125 and mounting screws 126.

[0007] In the work tables 110, 120 as disclosed in Patent Documents 2 and 3, the support members 113, 123 are detachable, so that the arrangement of the support members 113, 123 can be changed according to the shape to be laser processed. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 10-015685 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-259878 [Patent Document 3] Japanese Patent Application Publication No. 2019-084558 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in Patent Document 1, after the work table is attached to the laser processing machine, it is necessary to adjust the work to a predetermined position above the shallow body, which causes a problem in work efficiency.

[0010] In Patent Documents 2 and 3, it is necessary to change the position of the support member on the laser processing machine, which sometimes requires the laser processing machine to be temporarily stopped, resulting in problems in work efficiency.

[0011] The present invention has been made to solve the above-mentioned problems, and has an object to provide a work table and a laser processing method that can improve work efficiency. [Means for solving the problem]

[0012] In order to achieve the above object, the invention described in claim 1 is a work table for a laser processing machine, comprising a mounting part that is attached to the laser processing machine, and a main body part that is detachably attached to the mounting part and is used to process a workpiece, the main body part comprising a base part to which a support member that supports the workpiece can be attached, and a frame body that surrounds the outer edge of the base part with its inner surface, the frame body being higher than the upper end of the support member attached to the base part and having a height that allows the workpiece to abut against it.

[0013] With this configuration, the main body can be attached and detached from the mounting part while the mounting part is fixed to the laser processing machine, and when the main body is attached, the work can be positioned by abutting it against the frame.

[0014] The invention described in claim 2 is the same as the invention described in claim 1, in which the mounting portion comprises a base portion on which the frame body is placed and a positioning portion attached to the upper surface of the base portion and capable of fixing the frame body in a predetermined position.

[0015] With this configuration, the frame body can be easily fixed by the positioning portion.

[0016] The invention as set forth in claim 3 is the configuration of the invention as set forth in claim 2, wherein the frame has a rectangular outer edge and corners on the inner surface against which the workpiece can be brought into contact.

[0017] With this configuration, the workpiece can be positioned by contacting the corner portion.

[0018] The invention described in claim 4 is the configuration of the invention described in claim 3, wherein the mounting portion further comprises a fixing portion attached to the upper surface of the base portion and fixing the frame body to the base portion, the fixing portion being arranged on one of the two opposing sides of the frame body, the positioning portion being rotatably attached to the upper surface of the base portion on the other side of the frame body and including an eccentric pin that can move the frame body a predetermined distance toward the one side, wherein in a first state before movement, the distance from the fixing portion to the eccentric pin is longer than the distance from one side to the other side of the frame body, and in a second state after movement, the eccentric pin can press against the one side of the frame body.

[0019] With this configuration, the frame body is removable in the first state, and can be fixed in a predetermined position in the second state.

[0020] The invention described in claim 5 is such that, in the configuration of the invention described in claim 1 or claim 2, the main body portion is attached to the frame body and further includes an auxiliary portion that assists the base portion so that it is fixed in a floating position relative to the mounting portion.

[0021] With this configuration, the base portion is supported by the auxiliary portion.

[0022] The invention described in claim 6 is the configuration of the invention described in claim 5, in which the vertical height of the frame body is greater than the sum of the base part fixed in a floating position relative to the mounting part via the auxiliary part and the upper end of the support member attached to the base part.

[0023] With this configuration, the workpiece fits inside the frame.

[0024] The invention described in claim 7 is a laser processing method for laser processing a workpiece on a worktable, wherein the worktable has a mounting portion that is attached to a laser processing machine and a main body portion that is detachably attached to the mounting portion and for processing the workpiece, and includes the steps of attaching the mounting portion to the laser processing machine, arranging a first support member that supports the first workpiece on the first main body portion, installing the first main body portion with the first support member arranged on it in the laser processing machine and laser processing the first workpiece on the first main body portion, arranging a second support member that supports the second workpiece on the second main body portion while the first workpiece is being laser processed, and after laser processing the first workpiece on the first main body portion, removing the first main body portion from the laser processing machine and installing the second main body portion with the second support member arranged on it in the laser processing machine.

[0025] With this configuration, the first work table on which the support members are placed in advance can be exchanged for the second work table on which the support members are placed in advance.

[0026] The invention described in claim 8 is a laser processing method for laser processing a workpiece on a work table, wherein the worktable has a mounting section that is attached to a laser processing machine and a main body section that is detachably attached to the mounting section and for processing the workpiece, and includes the steps of attaching the mounting section to the laser processing machine, arranging a first support member that supports the first workpiece on the first main body section, arranging a second support member that supports the second workpiece on the second main body section, installing the first main body section with the first support member arranged on it in the laser processing machine and laser processing the first workpiece on the first main body section, after laser processing the first workpiece on the first main body section, removing the first main body section from the laser processing machine and installing the second main body section with the second support member arranged on it in the laser processing machine, laser processing the second workpiece on the second main body section, and removing the processed first workpiece from the first main body section while laser processing the second workpiece.

[0027] With this configuration, the step of removing the machined workpiece from the first main body and the step of laser machining the second workpiece overlap. [Effects of the Invention]

[0028] As explained above, the invention described in claim 1 allows the main body part alone to be attached and detached from the mounting part while the mounting part is fixed to the laser processing machine, and when the main body part is attached, the workpiece can be positioned by abutting it against the frame body, thereby improving work efficiency.

[0029] In addition to the effects of the invention described in claim 1, the invention described in claim 2 allows the frame body to be easily fixed using the positioning portion, thereby reducing the time required to set the main body portion and further improving work efficiency.

[0030] The invention of claim 3 has the effect of the invention of claim 2, and in addition, by bringing the work into contact with the corner portion, the work can be positioned, thereby further improving work efficiency.

[0031] In addition to the effects of the invention described in claim 3, the invention described in claim 4 makes the frame body removable in the first state and can be fixed in a predetermined position in the second state, making it easy to remove the frame body in the first state and allowing it to be accurately positioned after installation in the second state.

[0032] In the invention of claim 5, in addition to the effect of the invention of claim 1 or claim 2, the base part is supported by the auxiliary part, so that the attached state of the base part is stable.

[0033] In addition to the effect of the invention of claim 5, the invention of claim 6 has the advantage that the workpiece is housed inside the frame, making it easier to position the workpiece and improving work efficiency.

[0034] The invention described in claim 7 allows the first work table on which a support member is pre-positioned to be exchanged with the second work table on which a support member is pre-positioned, thereby improving work efficiency.

[0035] In the invention of claim 8, the process of removing the processed first workpiece from the first main body and the process of laser processing the second workpiece overlap, thereby improving work efficiency. [Brief explanation of the drawings]

[0036] [Figure 1] 1 is a perspective view of a work table according to an embodiment of the present invention; [Figure 2] FIG. 2 is a plan view of the work table shown in FIG. [Figure 3] 3 is a schematic cross-sectional view of the work table shown in FIG. 2 taken along line III-III. [Figure 4] FIG. 2 is a perspective view from the direction A shown in FIG. [Figure 5] 2 is a schematic cross-sectional view showing a state in which the work table shown in FIG. 1 is used. FIG. [Figure 6] FIG. 2 is a diagram showing laser processing of a workpiece using the worktable shown in FIG. 1. [Figure 7] 1. FIG. 4 is a diagram showing another example of the base portion used in the work table shown in FIG. [Figure 8] FIG. 1 is a perspective view showing a conventional work table disclosed in Patent Document 1. [Figure 9] (1) is a cross-sectional view of a conventional work table disclosed in Patent Document 2, and (2) is a plan view thereof. [Figure 10] (1) is a plan view of a conventional work table disclosed in Patent Document 3, and (2) is a cross-sectional view of the work table taken along line AA. DETAILED DESCRIPTION OF THE INVENTION

[0037] FIG. 1 is a perspective view of a work table according to an embodiment of the present invention, FIG. 2 is a plan view of the work table shown in FIG. 1, FIG. 3 is a schematic cross-sectional view of the work table shown in FIG. 2 along line III-III, and FIG. 4 is a perspective view from direction A shown in FIG. 1.

[0038] 1 to 4, the work table 10 includes a mounting part 20 that is attached to the laser processing machine 1 (see FIG. 6), and a main body part 30 that is detachably attached to the mounting part 20 and is used to process a workpiece. The workpiece to be processed by the laser processing machine 1 is made of an acrylic plate that is rectangular in plan view, and is fixed within the processing area of ​​the laser processing machine 1 via the work table 10.

[0039] The mounting part 20 is made of an aluminum plate having a rectangular shape in a plan view, and has a central opening 24 formed in the center thereof. The mounting part 20 also includes a base part 21 on which a frame body 40 (described later) is placed, a fixing part 22 attached to the upper surface of the base part 21 and fixing the frame body 40 to the base part 21, and a positioning part 23 that can fix the frame body 40 in a predetermined position.

[0040] The fixing part 22 comprises a fixing part body 25 with a through hole formed in the horizontal direction, a fixing pin 26 that is inserted into the through hole and slides horizontally to fix the workpiece, and an adjustment knob 27 that is slidably attached to the fixing part body 25 and can adjust the movement of the fixing pin 26. The fixing pin 26 comprises a pin body and a coil spring, and the pin body is arranged inside the coil spring.

[0041] The positioning portion 23 is an eccentric pin 29 that can fix the frame body 40 in a predetermined position, and is rotatably attached to the upper surface of the base portion 21 with a bolt (not shown). By rotating the eccentric pin 29, the positional relationship between the eccentric pin 29 and the frame body 40 can be changed, thereby making it possible to fine-tune the position of the frame body 40. The detailed arrangement of the eccentric pins 29 (29a to 29d) and the fixing portions 22 (22a to 22d) will be described later.

[0042] The main body 30 comprises a base 31 to which a support member 45 for supporting the workpiece can be attached, a frame 40 whose inner surface surrounds the outer edge of the base 31, and an auxiliary part attached to the frame 40 to support the base 31.

[0043] The base portion 31 is made of a steel plate having a rectangular shape in a plan view, and has a plurality of circular openings 34 formed at predetermined intervals. Support members for supporting a workpiece are inserted into the plurality of openings 34.

[0044] The frame body 40 has a rectangular outer edge, and its outer shape is formed by a first frame portion 41, a second frame portion 42, a third frame portion 43, and a fourth frame portion 44. The frame body 40 is placed on the outer periphery of the central opening 24 of the base portion 21 so that its outer edge faces vertically. Referring to FIG. 2, in a plan view, the first frame portion 41 is disposed opposite the third frame portion 43, and the second frame portion 42 is disposed opposite the fourth frame portion 44. The first frame portion 41 and the third frame portion 43 have the same quadrangular prism shape. The second frame portion 42 and the fourth frame portion 44 also have the same quadrangular prism shape, and the length in the longitudinal direction (X direction in FIG. 2) is set longer than the length in the longitudinal direction (Y direction in FIG. 2) of the first frame portion 41 and the third frame portion 43. The inner surface of each of the four corners of the frame 40 has corner portions 46 (46a to 46d) against which a workpiece can abut. This configuration allows the workpiece to be positioned by abutting the outer edges of the corners of the workpiece against the inner surfaces of the corner portions 46 of the frame 40. This improves work efficiency. Furthermore, the base portion 31 is positioned slightly below the center of the inner surfaces of the frame portions 41 to 44, and the height 47 of the frame 40 (frame portions 41 to 44) in the vertical direction (vertical direction in FIG. 3) is higher than the upper end of the support member 45 attached to the base portion 31, allowing the workpiece to abut when placed on the base portion 31. The advantages of this configuration will be described later.

[0045] 3 and 4, the auxiliary portion is a rod-shaped member 33 (33a to 33e) having a rectangular prism shape, and is attached so as to span from the second frame portion 42 to the opposing fourth frame portion 44. The rod-shaped member 33 supports the underside of the base portion 31, and the base portion 31 is placed on the upper surface of the rod-shaped member 33, supporting the base portion 31 so that the base portion 31 is fixed in a floating position relative to the mounting portion 20. With this configuration, the underside of the base portion 31 is supported by the rod-shaped member 33, thereby stably mounting the base portion 31. In this embodiment, the rod-shaped members 33 are arranged in a row at regular intervals across the entire underside of the base portion 31. Therefore, when the base portion 31 is placed, the load of the base portion 31 is dispersed. Furthermore, a workpiece 5 having a shape almost identical to or smaller than the base portion 31 is placed above the base portion 31. Even if the position of the workpiece 5 is biased up, down, left, or right and the load of the workpiece 5 is applied unevenly to the base portion 31, the rod-shaped member 33 is arranged so that the load is distributed over the entire surface of the base portion 31, so the mounting state of the base portion 31 is stable.

[0046] Next, the state in which the work table 10 is used will be described.

[0047] FIG. 5 is a schematic cross-sectional view showing the state in which the work table shown in FIG. 1 is used, and FIG. 6 is a diagram showing the laser processing of a workpiece using the work table shown in FIG.

[0048] 5, in a cross-sectional view, the rod-shaped members 33a to 33e are attached to a position below the inner surface of the frame body 40 and above the base portion 21. In other words, the rod-shaped members 33a to 33e are disposed in a position floating above the mounting portion 20. The base portion 31 is placed on the upper surfaces of the rod-shaped members 33a to 33e. With this configuration, the base portion 31 is disposed slightly below the center of the inner surface of the frame body 40, and therefore the frame body 40 serves as a handle when replacing the main body 30 with the base portion 31 attached to the frame body 40, improving usability. Furthermore, when removing the base portion 31 from the frame body 40, the base portion 31 can be pushed up from the underside, making removal of the base portion 31 easier and improving work efficiency.

[0049] Referring also to FIG. 6 , a support member 45 is disposed on the upper surface of the base portion 31 at a position corresponding to the shape to be machined (a position that does not interfere with the laser and can support the parts after the workpiece 5 has been cut), and the workpiece is placed so as to contact the upper end of the support member 45. As described above, the main body 30 is detachably attached to the mounting portion 20, and the frame 40 is higher than the upper end of the support member 45 and has a height that allows the workpiece 5 to contact it. This configuration allows the main body 30 to be detached from the mounting portion 20 while the mounting portion 20 is fixed to the laser processing machine 1. Furthermore, with the main body 30 attached to the mounting portion 20, the workpiece 5 can be positioned within the processing area of ​​the laser processing machine 1 by contacting the frame 40. This improves work efficiency.

[0050] Furthermore, the vertical height 47 of the frame 40 is set to a height at which the workpiece 5 abuts, and is greater than the total thickness of the base portion 31 (the distance 48 by which the rod-shaped member 33 is lifted from the base portion 21 of the mounting portion 20, and the thickness of the rod-shaped member 33 and the base portion 31) which is fixed at a position floating above the mounting portion 20 via an auxiliary portion, and the support member 45 attached to the base portion 31. With this configuration, the workpiece 5 fits inside the frame 40 when placed on the work table 10, making it easier to position the workpiece 5 and improving work efficiency.

[0051] Here, the arrangement of the eccentric pin 29 and the fixed portion 22 will be described.

[0052] Referring to FIG. 2 , fixing portions 22a and 22b are arranged on the upper surface of base portion 21 near second frame portion 42, and fixing portions 22c and 22d are arranged near third frame portion 43. Eccentric pins 29a and 29b are arranged near first frame portion 41, and eccentric pins 29c and 29d are arranged near fourth frame portion 44. In the installed state, fixing portion 22 abuts against second frame portion 42 and third frame portion 43, and eccentric pin 29 abuts against first frame portion 41 and fourth frame portion 44. As described above, since mounting portion 20 has positioning portions that can fix frame body 40 at a predetermined position, when main body portion 30 is attached to mounting portion 20, frame body 40 can be easily fixed by abutting against the positioning portions. This reduces the time required to set main body portion 30, further improving work efficiency.

[0053] When positioning the main body 30, first, the second frame 42 is placed so as to abut against the fixed portions 22a and 22b, and the third frame 43 is placed so as to abut against the fixed portions 22c and 22d. At this time, the eccentric pins 29a and 29b are not placed in contact with the first frame 41, and the eccentric pins 29c and 29d are not placed in contact with the fourth frame 44. Next, the eccentric pin 29a, which is located on the first frame 41 (other side) side opposite the third frame 43 (one side), is rotated. This causes the frame 40 to move left and right (X direction in FIG. 2). That is, in the first state before the frame body 40 moves, the distance from the fixing portion 22d to the eccentric pin 29a is longer than the distance from one side to the other side of the frame body 40. In the second state after the frame body 40 moves, the rotation of the eccentric pin 29a brings the eccentric pin 29a closer to the first frame portion 41, and the eccentric pin 29a presses the frame body 40 toward one side (the third frame portion 43). This configuration makes the frame body 40 removable in the first state. Meanwhile, in the second state, the distance from the fixing portion 22d to the eccentric pin 29a is shorter than in the first state, making it possible to fix the frame body 40 in a predetermined position. Therefore, the frame body 40 can be easily removed in the first state, and can be accurately positioned after installation in the second state. The same applies to the eccentric pin 29b. The same applies to the eccentric pins 29c and 29d in the Y direction.

[0054] Next, a method for laser processing a workpiece using the worktable according to the embodiment of the present invention will be described.

[0055] 5 and 6, first, the mounting unit 20 is attached to the processing area 2 of the laser processing machine 1.

[0056] Next, a support member 45 for supporting the workpiece 5 is attached to the opening 34 of the base portion 31. If the support member is positioned within the laser beam path, contact between the workpiece and the support member could cause the laser beam that penetrates the workpiece to bounce off the support member and scratch the workpiece. Therefore, the support member must be positioned away from the laser beam. If the support member is not positioned properly, the workpiece may lose balance and rattle during laser processing, causing the separated parts to fall and chip. Such chipped parts become defective products, reducing productivity. Furthermore, removing the processed parts within the processing area of ​​the laser processing machine requires the laser processing machine to be temporarily stopped, reducing work efficiency. Furthermore, when multiple shapes are to be processed, the workpiece is first processed into a first shape, and then the support member and the processed parts are removed from the laser processing machine. After that, the support member is positioned and attached within the processing area of ​​the laser processing machine at a position corresponding to a second shape, which is different from the first shape. Therefore, in conventional laser processing machines, the laser processing machine must be temporarily stopped within the processing area to remove processed parts or to place support members, preventing continuous laser processing and reducing work efficiency. Therefore, in an embodiment of the present invention, to perform laser processing without reducing productivity and work efficiency as with conventional laser processing machines, support members 45 are attached to the base unit 31 in advance at positions corresponding to the shapes of multiple types of parts. Specifically, a first main body unit 30a is prepared to place a first workpiece 5a, and a first support member 45a is placed at a position corresponding to the shape of the final product to be laser processed.

[0057] Next, the mounting unit 20 is installed in the processing area 2 of the laser processing machine 1, and then the first main body unit 30a is installed in the processing area 2 of the laser processing machine 1. At this time, the position of the first main body unit 30a is adjusted using the fixing unit 22 and the eccentric pin 29. After that, the first workpiece 5a is lowered from above the first support member 45a arranged on the first main body unit 30a and placed on the first support member 45a. At this time, the upper left corner of the first workpiece 5a is positioned along and abuts the upper left corner of the frame 40a. Then, the head unit 3 of the laser processing machine 1 is positioned above the first workpiece 5a, and the first workpiece 5a is laser processed.

[0058] In order to place a second workpiece 5b having a shape of the final product different from the shape of the final product of the first workpiece 5a while the first workpiece 5a is being laser processed, a second main body 30b is prepared and a second support member 45b is placed at a position on the second workpiece 5b corresponding to the shape of the final product. Therefore, the process of processing the first workpiece 5a and the process of placing the second support member 45b on the second main body 30b at least partially overlap.

[0059] Next, the first main body 30a is removed from the laser processing machine 1 and placed outside the processing area 2. Then, the second main body 30b, on which the second support member 45b has been previously placed, is installed in the processing area 2 of the laser processing machine 1. After that, the second workpiece 5b is lowered from above the second support member 45b placed on the second main body 30b and placed on the second support member 45b. Then, the second workpiece 5b is laser processed. While the second workpiece 5b is being laser processed, the processed first workpiece 5a (final product) is removed from the first main body 30a outside the processing area 2.

[0060] As described above, in the laser processing method according to the embodiment of the present invention, the first main body 30a on which the support member is already arranged can be interchanged with the second main body 30b on which the support member is already arranged, thereby improving work efficiency. Furthermore, since the process of processing the first workpiece and the process of placing the second support member on the second main body overlap at least partially, the manufacturing time of the final product is substantially shortened, further improving work efficiency. Furthermore, since the workpiece can be removed outside the processing area 2 after processing, the amount of work required within the processing area 2 is reduced, further improving work efficiency. Furthermore, since the process of removing the first workpiece from the first main body after processing overlaps with the process of laser processing the second workpiece, work efficiency is improved.

[0061] In the above embodiment, the base portion has openings formed at specific positions, intervals, in specific numbers, and with specific shapes, but openings may be formed at other positions, intervals, in specific numbers, and with other shapes. For example, as shown in Fig. 7, openings 52 may be formed in base portion 51 so as to be aligned vertically and horizontally. In this case, the number of openings 52 increases, making it easier to arrange them at positions corresponding to the shape to be machined.

[0062] Furthermore, although the above embodiment is provided with a specific fixing portion, the fixing portion may be anything else that is arranged outside the frame body and can fix the frame body in a predetermined position.

[0063] Furthermore, in the above embodiment, the positioning portion is an eccentric pin, but it may be a non-eccentric pin. Also, the positioning portion may be a member other than a pin, such as a plate-type guide.

[0064] Furthermore, although the above embodiment has a specific number of positioning portions and fixing portions, it is sufficient that at least one positioning portion and one fixing portion are formed. Also, either one or both of the positioning portion and the fixing portion may be omitted.

[0065] Furthermore, in the above embodiment, the positioning portion and the fixing portion are attached in a specific arrangement, but they may be attached in other arrangements.

[0066] Furthermore, in the above embodiment, the work table is fixed to a table of a specific shape of laser processing machine, but the work table can be similarly applied to tables of various shapes. Also, the mounting part may be detachably attached. In this case, the work table itself becomes replaceable with respect to the laser processing machine and can be attached to various laser processing machines, resulting in a highly versatile work table.

[0067] Furthermore, in the above embodiment, the support member is attached to the base portion by a specific structure, but the support member may be attached to the base portion by other structures as long as it can be fixed to the base portion at a desired position. For example, the base portion and the support member may be magnetic materials. In this case, there is no need to form an opening in the base portion for attaching the support member, and the support member can be positioned at a desired position, improving usability.

[0068] Furthermore, in the above embodiment, the frame has a rectangular outer edge, but it may have other shapes.

[0069] Furthermore, in the above embodiment, the frame has corners, but the corners may be omitted.

[0070] Furthermore, in the above embodiment, the frame has a specific height, but it may have a height that allows at least a portion of the workpiece to abut against it. For example, the entire thickness of the workpiece may abut against the inner surface of the frame, or the lower part of the thickness of the workpiece may abut against the inner surface of the frame.

[0071] Furthermore, in the above embodiment, the auxiliary portion is configured by a rod-shaped member, but other structures may be used as long as they are capable of supporting the base portion. For example, a honeycomb shape may be used, or a member such as a plate having a length and shape that does not span the frame may be provided.

[0072] Furthermore, in the above embodiment, the base portion is fixed in a floating position relative to the mounting portion via the auxiliary portion, but it may also be fixed to the upper surface of the base portion without the auxiliary portion.

[0073] Furthermore, in the above embodiment, the base portion has a specific shape, but it may have other shapes.

[0074] Furthermore, in the above embodiment, the process of placing the second support member on the second body portion is started and completed during the laser processing of the first workpiece. However, as long as there is at least a partial overlap, the process does not have to be started and completed during the laser processing of the first workpiece. For example, the process of placing the second support member on the second body portion may be started after the laser processing of the first workpiece begins and completed after the laser processing of the first workpiece. Alternatively, the process of placing the second support member on the second body portion may be started before the laser processing of the first workpiece begins and completed before the laser processing of the first workpiece is completed. If the process of placing the second support member on the second body portion takes longer than the time required for the laser processing of the first workpiece, the process of placing the second support member on the second body portion may be started before the laser processing of the first workpiece begins and completed after the laser processing of the first workpiece is completed. If the process of placing the second support member on the second body portion is completed before the laser processing of the first workpiece is completed, the time required for switching between the processing of the first workpiece and the second workpiece can be shortened, thereby further improving work efficiency. Alternatively, after the second body is installed in the laser processing machine, the process may proceed to the step of arranging the support member on the first body, and the process may be repeated. When repeating, the arrangement of the first support member may be the same as before the repetition, or the arrangement may be changed.

[0075] The method of using the work table of the present invention is not limited to the above-described embodiment. For example, the step of placing the second support member on the second main body may be performed after laser processing of the first workpiece. Also, after the step of placing the first support member on the first main body, the step of placing the second support member on the second main body may be performed before laser processing of the first workpiece and laser processing of the second workpiece.

[0076] Furthermore, in the above embodiment, the step of placing the second support member on the second body is performed during laser processing of the first workpiece, and the step of removing the processed first workpiece from the first body is performed during laser processing of the second workpiece, but an embodiment in which the step of placing the second support member on the second body is performed during laser processing of the first workpiece, while the laser processing of the second workpiece and the step of removing the processed first workpiece from the first body do not overlap, or an embodiment in which the step of removing the processed first workpiece from the first body is performed during laser processing of the second workpiece, while the laser processing of the first workpiece and the step of placing the second support member on the second body do not overlap.

[0077] Furthermore, in the above embodiment, the workpiece is an acrylic plate, but it is not limited to an acrylic plate, and may be a resin film such as PET or PE, a wooden plate, or other materials.

[0078] Furthermore, in the above embodiment, the main body is replaced by holding the frame itself, but a handle may be attached to the frame.

[0079] Furthermore, in the above embodiment, the support members have a specific shape and are multiple members, but they may be support members made of non-combustible paper that have a honeycomb shape in plan view and can be installed so as to stand upright relative to the base.Furthermore, the support members made of non-combustible paper may be foldable and can be supported in a three-dimensional shape when unfolded. [Explanation of symbols]

[0080] 1...Laser processing machine 5. Work 10...Work table 20...Attachment part 21...Base 22…Fixed part 23... Positioning part 29...Eccentric pin 30...Main body 31, 51...Base 40...Frame 41~44...Frame section 45...Support member 46...Corner section 47…height In addition, the same reference numerals in each drawing indicate the same or corresponding parts.

Claims

1. A work table for a laser processing machine, a mounting part attached to the laser processing machine; a main body portion that is detachably attached to the mounting portion and that processes a workpiece; The main body portion includes a base portion to which a support member for supporting the workpiece can be attached; a frame body that surrounds the outer edge of the base portion with its inner surface, The frame is a work table having a height that is higher than the upper end of the support member attached to the base portion and allows the work to abut against it.

2. The mounting portion includes a base portion on which the frame body is placed; The work table according to claim 1 , further comprising a positioning portion attached to an upper surface of the base portion and capable of fixing the frame body at a predetermined position.

3. 3. The work table according to claim 2, wherein the frame has a rectangular outer edge and corners on its inner surface against which the workpiece can come into contact.

4. the mounting portion further includes a fixing portion attached to an upper surface of the base portion and fixing the frame body to the base portion; the fixing portion is disposed on one of two opposing side surfaces of the frame body, the positioning portion includes an eccentric pin rotatably attached to an upper surface of the base portion on the other surface side of the frame body, and capable of moving the frame body a predetermined distance toward the one surface side, In a first state before movement, the distance from the fixing portion to the eccentric pin is longer than the distance from the one surface to the other surface of the frame body, 4. The work table according to claim 3, wherein in the second state after movement, the eccentric pin can press the frame body toward the one surface side.

5. 3. The work table according to claim 1, wherein the main body further comprises an auxiliary part attached to the frame and supporting the base so that the main body is fixed in a floating position relative to the mounting part.

6. 6. The work table according to claim 5, wherein the vertical height of the frame body is greater than the sum of the height of the base portion fixed at a floating position relative to the mounting portion via the auxiliary portion and the upper end of the support member attached to the base portion.

7. A laser processing method for laser processing a workpiece on a worktable, comprising: The work table includes a mounting portion that is attached to a laser processing machine; a main body portion that is detachably attached to the mounting portion and that processes the workpiece; attaching the mounting unit to the laser processing machine; disposing a first support member that supports a first workpiece on the first body portion; a step of installing the first main body portion on which the first support member is arranged in the laser processing machine and laser processing the first workpiece on the first main body portion; disposing a second support member on the second body portion to support a second workpiece while the first workpiece is being laser machined; after laser processing the first workpiece on the first main body portion, removing the first main body portion from the laser processing machine, and installing the second main body portion, on which the second support member is disposed, on the laser processing machine.

8. A laser processing method for laser processing a workpiece on a worktable, comprising: The work table includes a mounting portion that is attached to a laser processing machine; a main body portion that is detachably attached to the mounting portion and that processes the workpiece; attaching the mounting unit to the laser processing machine; disposing a first support member that supports a first workpiece on the first body portion; disposing a second support member on the second body portion to support a second workpiece; a step of installing the first main body portion on which the first support member is arranged in the laser processing machine and laser processing the first workpiece on the first main body portion; After laser processing the first workpiece on the first main body part, removing the first main body part from the laser processing machine and installing the second main body part on which the second support member is disposed on the laser processing machine; laser processing the second workpiece on the second body portion; and removing the processed first workpiece from the first main body portion while the second workpiece is being laser processed.

Images