Cutting fixture set and cutting method

Abstract

To provide a cutting and fixing jig set capable of obliquely cutting a rectangular plate material with high accuracy.SOLUTION: One end edge 11 of the pair of end edges 11 and 12 abuts on the first guide portion 211. One end edge 13 of another pair of end edges 13 and 14 orthogonal to the one end edges 11 and 12 abuts on the second guide portion 212. The first guide portion 211 and the second guide portion 212 are each inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. The cut end edge 101 of the primary cut board 10 abuts on the third guide part 223. The fourth guide portion 224 comes into contact with one or the other of the other pair of end edges 13 and 14. The third guide portion 223 is located parallel to the traveling direction CD of the cutting blade CS. The fourth guide portion 224 is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cutting fixture set and a cutting method, and more particularly to a cutting fixture set including a primary cutting fixture and a secondary cutting fixture, and a cutting method using the same. [Background technology]

[0002] Patent Document 1 describes a method for manufacturing oblique veneers, which includes first to fifth steps.

[0003] The first step is to cut a wooden veneer into strips with its grain oriented longitudinally to obtain a plurality of strip-shaped boards. The second step is to shift one of the adjacent strip-shaped boards longitudinally. The third step is to join the side edges of one adjacent strip-shaped board to the other. The fourth step is to move the joined strip-shaped boards in a direction tilted from the longitudinal direction of the strip-shaped boards while they are in a parallel state. The fifth step is to cut the moving strip-shaped boards in a parallel state to a predetermined length in the moving direction to form oblique veneers. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-218679 Summary of the Invention [Problem to be solved by the invention]

[0005] When cutting the edges of a rectangular plate material at an angle as in Patent Document 1, it is desirable to form the inclination angle of the cut edges with high precision.

[0006] The present invention has been made in view of the above-mentioned circumstances, and aims to provide a cutting fixture set that can accurately cut rectangular plate material at an angle. It is also an object of the present invention to provide a cutting method that can accurately cut rectangular plate material at an angle. [Means for solving the problem]

[0007] The cutting fixture set of the present invention is a cutting fixture set used when cutting off a pair of opposing edges of a rectangular initial plate material, and comprises: a primary cutting fixture jig for fixing the initial plate material and used when performing the primary cut; and a secondary cutting fixture jig for fixing the primary cut plate obtained by the primary cut and used when performing the secondary cut. The primary cutting fixture jig comprises a first guide portion against which one of the pair of edges abuts, and a second guide portion against which one edge of the other pair of edges perpendicular to the one edge abuts, the first guide portion and the second guide portion being each inclined at a predetermined angle with respect to the direction of travel of the cutting blade. The secondary cutting fixture comprises a third guide portion against which the cut edge of the primary cutting plate abuts, and a fourth guide portion against which one or the other edge of the other pair of edges abuts, the third guide portion being positioned parallel to the direction of travel of the cutting blade, and the fourth guide portion being inclined at a predetermined angle with respect to the direction of travel of the cutting blade.

[0008] The cutting method according to the present invention is a method for cutting a rectangular initial plate material using the cutting fixture jig set, and includes a first setting step of setting the primary cutting fixture jig to the cutting device so that the first guide portion and the second guide portion are inclined at a predetermined angle relative to the traveling direction of the cutting blade of the cutting device; a second setting step of setting the secondary cutting fixture jig to the cutting device so that the third guide portion is positioned parallel to the traveling direction of the cutting blade of the cutting device and the fourth guide portion is inclined at a predetermined angle relative to the traveling direction of the cutting blade; and a second setting step of abutting one edge of a pair of opposing edges of the initial plate material against the first guide portion of the primary cutting fixture jig and abutting the other edge of a pair of edges perpendicular to the one edge against the second guide portion of the primary cutting fixture jig. a first fixing step of fixing the initial plate material to the primary cutting fixture jig so that one of the pair of edges abuts against the third guide portion of the secondary cutting fixture jig; a second fixing step of abutting the cut edge of the primary cutting plate to the third guide portion of the secondary cutting fixture jig and abutting one or the other edge of the other pair of edges of the initial plate material cut in the first cutting step against the fourth guide portion of the secondary cutting fixture jig; a first cutting step of cutting the initial plate material fixed to the primary cutting fixture jig along the traveling direction after the first fixing step to obtain the primary cutting plate; and a second cutting step of cutting the primary cutting plate fixed to the secondary cutting fixture jig by advancing the cutting blade along the traveling direction after the second fixing step. [Effects of the Invention]

[0009] According to the present invention, a rectangular plate material can be cut obliquely with high precision. [Brief explanation of the drawings]

[0010] [Figure 1] 1A, 1B, and 1C are plan, front, and side views of a primary cutting fixture jig of a first embodiment of the cutting fixture set according to the present invention. [Figure 2]2A, 2B, and 2C are plan, front, and side views of a secondary cutting fixture of a first embodiment of the cutting fixture set according to the present invention. [Figure 3] FIG. 3 is a front view showing a pressing member of the cutting fixture set according to the present invention. [Figure 4] Fig. 4A is a schematic plan view showing a process for obtaining an initial plate material used in the present invention, and Fig. 4B is a front view of the same. [Figure 5] FIG. 5 is a plan view showing a state in which a primary cutting fixture of a first embodiment of the cutting fixture set according to the present invention is used. [Figure 6] FIG. 6 is a plan view showing a state in which the secondary cutting fixture of the first embodiment of the cutting fixture set according to the present invention is used. [Figure 7] 7A, 7B, and 7C are plan, front, and side views of a primary cutting fixture jig of a second embodiment of the cutting fixture set according to the present invention. [Figure 8] 8A, 8B, and 8C are plan, front, and side views of a secondary cutting fixture of a second embodiment of the cutting fixture set according to the present invention. [Figure 9] FIG. 9 is a plan view showing a state in which a primary cutting fixture of a second embodiment of the cutting fixture set according to the present invention is used. [Figure 10] FIG. 10 is a plan view showing a state in which a secondary cutting fixture of a second embodiment of the cutting fixture set according to the present invention is used. [Figure 11] Fig. 11A is a plan view showing an initial plate material used in the present invention, and Fig. 11B is a plan view showing a cut plate material obtained in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The cutting fixture set of the present invention will be described below with reference to the drawings. The drawings described in the following embodiments are schematic, and the size and thickness ratios of the components in the drawings do not necessarily reflect the actual dimensional ratios. The following embodiments and modifications are merely a portion of various embodiments of the present invention. The following embodiments and modifications can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. The configurations of the modifications can also be combined as appropriate.

[0012] (First embodiment) The cutting fixture set 200 of this embodiment includes a primary cutting fixture 210 and a secondary cutting fixture 220. The primary cutting fixture 210 is used to fix the initial plate material 1 and perform the primary cutting. The secondary cutting fixture 220 is used to fix the primary cut plate 10 obtained by the primary cutting and perform the secondary cutting. By the primary cutting and secondary cutting, a pair of opposing edges 11, 12 are cut off from the initial plate material 1, which is rectangular (strip-shaped) in plan view, and a cut plate material 1A is formed.

[0013] FIG. 11A shows a plan view of the initial plate 1. The plan view is a view seen from above in a direction perpendicular to the flat surface (widest face) of the initial plate 1. The initial plate 1 is formed into a rectangular shape in a plan view, and has a pair of opposing edges 11, 12 and another pair of opposing edges 13, 14. Edges 11 and 12 are parallel. Edges 13 and 14 are also parallel. Edges 11, 12 are shorter than edges 13, 14. The angle (narrow angle) between edges 11 and 13 is a right angle. Similarly, the angle between edges 11 and 14, the angle between edges 12 and 13, and the angle between edges 12 and 14 are each a right angle.

[0014] FIG. 11B shows a plan view of the cut plate material 1A. The plan view is a view seen from above in a direction perpendicular to the flat surface (widest surface) of the cut plate material 1A. The cut plate material 1A is formed into a parallelogram in a plan view, and has a pair of opposing edges 111, 121 and another pair of opposing edges 13, 14. The edges 13, 14 are the same edges as the edges 13, 14 of the initial plate material 1. The edge 111 is an edge formed by cutting the edge of the initial plate material 1 on the edge 11 side. The edge 121 is an edge formed by cutting the edge of the initial plate material 1 on the edge 12 side.

[0015] Edge 111 and edge 121 are parallel. Edges 111 and 121 are shorter than edges 13 and 14. The angle (narrow angle) between edge 111 and edge 13 is a predetermined angle. This predetermined angle is not particularly limited as long as it is greater than 0° and less than 90°, but is preferably greater than 30° and less than 60°. The angle between edge 121 and edge 14 is the same as the angle between edge 111 and edge 13. Similarly, the angle between edge 111 and edge 14 and the angle between edge 121 and edge 13 are the same. The angle between edge 111 and edge 14 is not particularly limited as long as it is greater than 90° and less than 180°, but is preferably greater than 120° and less than 150°.

[0016] In this embodiment, the angle between edge 111 and edge 13 is 45°, and the angle between edge 111 and edge 14 is 135°.

[0017] The cut plate material 1A has a herringbone shape. That is, the cut plate material 1A is formed in a shape that allows a herringbone pattern to be formed when a plurality of cut plate materials 1A are combined and arranged. This makes it easy to form a herringbone pattern with a plurality of cut plate materials 1A.

[0018] <Primary cutting fixture> 1A to 1C show a primary cutting fixture 210. As shown in the plan view (viewed from above) of Fig. 1A, the primary cutting fixture 210 is formed by combining metal members, and has a primary frame member 3, a primary pressing member 4, a primary support plate 5, a first guide portion 211, a second guide portion 212, etc.

[0019] The primary frame member 3 includes a primary cross member 31, a primary front member 32, a primary rear member 33, a primary diagonal member 34, a primary mounting member 35, a primary reinforcing member 36, a primary reinforcing diagonal member 37, and a primary fixing piece 38.

[0020] The primary cross member 31 is a member formed long and straight in the front-to-rear direction. A primary front member 32 is provided at the front end of the primary cross member 31, and a primary rear member 33 is provided at the rear end of the primary cross member 31. The primary front member 32 and the primary rear member 33 are members formed long and straight in the left-to-right direction. The right end of the primary front member 32 is joined to the front end of the primary cross member 31, and the right end of the primary rear member 33 is joined to the rear end of the primary cross member 31. The angle (narrow angle) between the primary front member 32 and the primary cross member 31 is approximately a right angle, and the angle (narrow angle) between the primary rear member 33 and the primary cross member 31 is also approximately a right angle. Therefore, the primary front member 32 and the primary rear member 33 are parallel and face each other in the front-to-rear direction.

[0021] Further, the primary front material 32 and the primary back material 33 are provided with gripping portions 321 and 331, respectively. The primary cutting fixture 210 is formed so that it can be moved by gripping the gripping portions 321 and 331.

[0022] The primary diagonal member 34 is a long, straight member formed in a diagonal direction relative to the fore-and-aft direction. One end of the primary diagonal member 34 is joined to the left end of the primary rear member 33. The other end of the primary diagonal member 34 is joined to a portion of the primary cross member 31 slightly rearward of the longitudinal center. The angle (narrow angle) between the primary diagonal member 34 and the primary cross member 31 is approximately 45°, and the angle (narrow angle) between the primary diagonal member 34 and the primary rear member 33 is also approximately 45°.

[0023] The primary mounting member 35 is a member formed long and straight in the left-right direction. One end of the primary mounting member 35 is joined to the rear end of the primary reinforcing diagonal member 37. The other end of the primary mounting member 35 is joined to the primary reinforcing member 36. The primary mounting member 35 is arranged parallel to the primary front member 32 and the primary rear member 33.

[0024] The primary reinforcing diagonal member 37 is a member that is inclined in the front-rear and left-right directions in a plan view. One end of the primary reinforcing diagonal member 37 is joined to the rear side of the primary front member 32 at approximately the center in the left-right direction, and the other end of the primary reinforcing diagonal member 37 is joined to the first guide member 213 located at the foremost side.

[0025] The primary reinforcement member 36 is a member formed long and straight in the front-to-rear direction. One end of the primary reinforcement member 36 is joined to the left end of the primary front member 32, and the other end of the primary reinforcement member 36 is joined to the left end of the primary mounting member 35.

[0026] The primary fixing piece 38 is provided so as to protrude from the right side of the primary cross member 31. The primary fixing piece 38 is provided over the entire length of the primary cross member 31.

[0027] The primary support plate 5 is a member that supports the initial plate 1 from below when the initial plate 1 is fixed to the primary cutting fixture 210. The primary support plate 5 is a member that is formed long and straight in the front-to-rear direction. One end of the primary support plate 5 is joined to the rear side of the primary mounting member 35, and the other end of the primary support plate 5 is joined to the front side of the primary diagonal member 34. The primary support plate 5 can be formed from a plate member with a flat upper surface. The primary frame member 3 has two primary support plates 5, one of which is provided in approximately the center of the primary frame member 3 in the left-right direction. The other primary support plate 5 is provided below the primary hold-down member 4 and in a position facing the primary hold-down member 4.

[0028] The primary holding member 4 is a member that holds down the initial plate material 1 from above when fixing the initial plate material 1 to the primary cutting fixture 210. The primary holding member 4 is a member that is formed long and straight in the front-to-rear direction. The primary holding member 4 is detachably attached to the primary frame member 3. One end of the primary holding member 4 is attached to the primary mounting member 35 by being hooked by a fastener 41 slightly to the left of the approximate center in the left-to-right direction. The other end of the primary holding member 4 is attached to the primary rear plate 33 by being hooked by a fastener 41 slightly to the left of the approximate center in the left-to-right direction.

[0029] The primary presser member 4 is provided with a plurality of presser tools 42. As shown in Fig. 3, the presser tool 42 has a fixed protrusion 421 and a contact portion 422 protruding below the fixed protrusion 421. The presser tool 42 is provided on the primary presser member 4 such that the fixed protrusion 421 is fixed to the primary presser member 4 and the contact portion 422 protrudes below the lower surface of the primary presser member 4. The plurality of presser tools 42 are provided side by side at intervals in the longitudinal direction of the primary presser member 4.

[0030] The primary presser member 4 is provided with a front presser tool 43. The front presser tool 43 is a member that presses the initial plate material 1 set in the primary cutting fixture 210 toward (rearward of) the second guide part 212. The front presser tool 43 is provided forward of the center of the primary presser member 4 in the front-to-rear direction. The front presser tool 43 is also formed to be movable in the front-to-rear direction relative to the primary presser member 4.

[0031] The first guide portion 211 is a portion against which one edge 11 of the pair of edges 11, 12 abuts when the initial plate material 1 is fixed to the primary cutting fixture 210. The primary cutting fixture 210 of this embodiment has three first guide portions 211, but is not limited to this and may have one or two or more first guide portions 211.

[0032] The first guide portion 211 is formed by one outer surface (flat surface) of the first guide member 213. The first guide member 213 is joined to a portion slightly forward of the center portion in the longitudinal direction (front-to-back direction) of the primary cross member 31. A plurality of first guide members 213 are arranged side by side in the longitudinal direction (front-to-back direction) of the primary cross member 31.

[0033] Primary spacing members 215 are provided between adjacent first guide members 213. The primary spacing members 215 are formed of Z-shaped members in a plan view, and are joined to the front and rear first guide members 213. The primary spacing members 215 reinforce the first guide members 213 so that the spacing between the adjacent first guide members 213 is maintained.

[0034] The first guide portion 211 is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. The primary cutting fixture 210 is set in the cutting device CA when cutting the initial plate material 1. As shown in Figures 4A and 4B, the cutting device CA is formed by a running saw or the like. The cutting device CA has a table CT, a cutting blade CS, a ruler portion CR, and a claw portion CN. The table CT is a portion on which the workpiece CW is placed, and its upper surface is formed flat. The cutting blade CS is a blade that cuts the workpiece CW. A portion of the cutting blade CS protrudes from the upper surface of the table CT. The cutting blade CS is, for example, a rotary blade that cuts the workpiece CW while rotating. The traveling direction CD of the cutting blade CS is forward, but is not limited to this, and the traveling direction CD of the cutting blade CS may be backward or bidirectional (front and rear).

[0035] The ruler part CR is provided on the right side of the table CT, spanning the entire length in the front-to-rear direction. The surface of the ruler part CR facing the table CT is formed parallel to the direction of travel CD of the cutting blade CS. The workpiece CW is set on the table CT with its right end face abutting against the ruler part CR. Therefore, the ruler part CR serves as a reference for setting the workpiece CW, and the cutting blade CS, which moves in the direction of travel CD, cuts the workpiece CW, leaving a cut end face parallel to the ruler part CR.

[0036] The claw portion CN presses down on the workpiece CW set on the table CT from above to make it difficult for it to move during cutting.

[0037] The first guide portion 211 in this embodiment is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. This predetermined angle can be set appropriately depending on the inclination angle of the edge 121 (cutting edge 101) formed when the initial plate material 1 is cut. In this embodiment, the first guide portion 211 is inclined at 45° with respect to the traveling direction CD of the cutting blade CS, but this is not limiting, and the inclination angle (narrow angle) of the first guide portion 211 with respect to the traveling direction CD can be set to more than 0° and less than 90°, preferably 30° or more and 60° or less.

[0038] The second guide portion 212 is a portion against which one edge 13 (or 14) of a pair of edges 13, 14 perpendicular to one edge 11, 12 comes into contact when the initial plate material 1 is fixed to the primary cutting fixture 210. The primary cutting fixture 210 of this embodiment has three second guide portions 212, but is not limited to this and may have one or two or more second guide portions 212.

[0039] The second guide portion 212 is formed by one outer surface (flat surface) of the second guide member 214. The second guide member 214 is joined to the primary diagonal member 34. A plurality of second guide members 214 are arranged side by side in the longitudinal direction of the primary diagonal member 34.

[0040] The second guide portion 212 in this embodiment is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. This predetermined angle can be set appropriately depending on the inclination angle of the edge (cutting edge 101) formed when the initial plate material 1 is cut. In this embodiment, the second guide portion 212 is inclined at 45° with respect to the traveling direction CD of the cutting blade CS, but this is not limiting, and the inclination angle (narrow angle) of the second guide portion 212 with respect to the traveling direction CD can be set to more than 0° and less than 90°, preferably 30° or more and 60° or less.

[0041] In this embodiment, it is preferable that an imaginary plane including each outer surface (flat surface) of the first guide portion 211 and an imaginary plane including each outer surface (flat surface) of the second guide portion 212 have a positional relationship in which they are perpendicular to each other.

[0042] <Secondary cutting fixture> 2A to 2C show the secondary cutting fixture 220. As shown in the plan view (viewed from above) of Fig. 2A, the secondary cutting fixture 220 is formed by combining metal members, and includes a secondary frame member 6, a secondary pressing member 7, a secondary support plate 8, a third guide portion 223, a fourth guide portion 224, etc.

[0043] The secondary frame member 6 includes a secondary cross member 61, a secondary front member 62, a secondary rear member 63, a secondary diagonal member 64, a secondary mounting member 65, a secondary reinforcement member 66, a secondary fixing piece 67, and a secondary fixing cross member 68.

[0044] The secondary cross member 61 is a member formed long and straight in the front-to-rear direction. A secondary front member 62 is provided at the front end of the secondary cross member 61, and a secondary rear member 63 is provided at the rear end of the secondary cross member 61. The secondary front member 62 and the secondary rear member 63 are members formed long and straight in the left-to-right direction. The right end of the secondary front member 62 is joined to the front end of the secondary cross member 61, and the right end of the secondary rear member 63 is joined to the rear end of the secondary cross member 61. The angle (narrow angle) between the secondary front member 62 and the secondary cross member 61 is approximately a right angle, and the angle (narrow angle) between the secondary rear member 63 and the secondary cross member 61 is also approximately a right angle. Therefore, the secondary front member 62 and the secondary rear member 63 are parallel and face each other in the front-to-rear direction.

[0045] Further, the secondary front material 62 and the secondary back material 63 are provided with gripping portions 621 and 631, respectively. The secondary cutting fixture 220 is formed so that it can be moved by gripping the gripping portions 621 and 631.

[0046] The secondary diagonal member 64 is a long, straight member formed in a diagonal direction relative to the fore-and-aft direction. One end of the secondary diagonal member 64 is joined to approximately the center in the left-right direction of the secondary mounting member 65. The other end of the secondary diagonal member 64 is joined to the rear end of the secondary reinforcement member 66. The angle (narrow angle) between the secondary diagonal member 64 and the secondary mounting member 65 is approximately 45°, and the angle (narrow angle) between the secondary diagonal member 64 and the secondary reinforcement member 66 is also approximately 45°.

[0047] The secondary mounting member 65 is a member that is formed long and straight in the left-right direction. One end of the secondary mounting member 65 is joined to a portion of the secondary cross member 61 that is forward of the center in the longitudinal direction. The other end of the secondary mounting member 65 is joined to a secondary reinforcing member 66. The secondary mounting member 65 is arranged parallel to the secondary front member 62 and the secondary rear member 63.

[0048] The secondary reinforcement member 66 is a member formed long and straight in the fore-and-aft direction. One end of the secondary reinforcement member 66 is joined to the lower end of the secondary front member 62, and the other end of the secondary reinforcement member 66 is joined to the lower end of the secondary diagonal member 64.

[0049] The secondary fixing piece 67 is provided so as to protrude from the right side of the secondary cross member 61. The secondary fixing piece 67 is provided over the entire length of the secondary cross member 61.

[0050] The secondary fixed cross-member 68 is a member that is formed long and straight in the front-to-rear direction. The front end of the secondary fixed cross-member 68 is joined to the secondary mounting member 65, and the rear end of the secondary fixed cross-member 68 is joined to the secondary rear member 63. The secondary fixed cross-member 68 is arranged parallel to the secondary cross-member 61. The angle (narrow angle) between the secondary mounting member 65 and the secondary fixed cross-member 68 is approximately a right angle, and the angle (narrow angle) between the secondary rear member 63 and the secondary fixed cross-member 68 is also approximately a right angle. The secondary fixed cross-member 68 is arranged between the secondary support plate 8 and the secondary cross-member 61.

[0051] The secondary support plate 8 is a member that supports the primary cutting plate 10 from below when the primary cutting plate 10 is fixed to the secondary cutting fixture 220. The primary cutting plate 10 is obtained by cutting off one end of the initial plate material 1 in the longitudinal direction using the primary cutting fixture 210.

[0052] The secondary support plate 8 is a member formed long and straight in the front-to-rear direction. One end of the secondary support plate 8 is joined to the rear side of the secondary diagonal member 64, and the other end of the secondary support plate 8 is joined to the front side of the secondary rear member 63. The secondary support plate 8 can be formed from a plate member with a flat upper surface. The secondary frame member 6 has two secondary support plates 8, one of which is provided in approximately the center of the secondary frame member 6 in the left-to-right direction. The other secondary support plate 8 is provided to the left of the secondary holding member 7.

[0053] The secondary pressing member 7 is a member that presses down on the primary cutting plate 10 from above when the primary cutting plate 10 is fixed to the secondary cutting fixture 220. The secondary pressing member 7 is a member that is formed long and straight in the front-to-rear direction. The secondary pressing member 7 is detachably attached to the secondary frame member 6. One end of the secondary pressing member 7 is attached by being hooked by a locking device 41 slightly to the left of the approximate center in the left-to-right direction of the secondary mounting member 65. The other end of the secondary pressing member 7 is attached by being hooked by being slightly to the left of the approximate center in the left-to-right direction of the secondary rear member 63.

[0054] The secondary presser member 7 is provided with a plurality of pressers 42 as shown in Fig. 3. The presser members 42 are provided on the secondary presser member 7 such that the fixing protrusions 421 are fixed to the secondary presser member 7 and the abutment portions 422 protrude downward from the lower surface of the secondary presser member 7. The plurality of pressers 42 are provided side by side at intervals in the longitudinal direction of the secondary presser member 7.

[0055] The secondary presser member 7 is provided with a rear presser tool 73. The rear presser tool 73 is a member that presses the primary cutting plate 10 set in the secondary cutting fixture 220 toward (forward of) the fourth guide part 224. The rear presser tool 73 is provided rearward of the center of the secondary presser member 7 in the front-to-rear direction. The rear presser tool 73 is also formed to be movable in the front-to-rear direction relative to the secondary presser member 7.

[0056] The cut edge 101 of the primary cutting plate 10 abuts against the third guide portion 223 when the primary cutting plate 10 is fixed to the secondary cutting fixture 220. The primary cutting plate 10 is formed by cutting off one longitudinal end of the initial plate 1 using the primary cutting fixture 210. Therefore, when one edge 11 of the pair of edges 11, 12 is cut off, the cut edge 101 of the primary cutting plate 10 becomes the edge 111 of the cut plate 1A. When the other edge 12 of the pair of edges 11, 12 is cut off, the cut edge 101 of the primary cutting plate 10 becomes the edge 121 of the cut plate 1A. The secondary cutting fixture 220 of this embodiment has three third guide portions 223, but is not limited to this, and may have one or more third guide portions 223.

[0057] The third guide portion 223 is formed by one outer surface (flat surface) of the third guide member 225. The third guide member 225 is joined to a portion of the secondary fixed horizontal member 68 that is further forward than the center in the longitudinal direction (front-to-back direction). A plurality of third guide members 225 are arranged side by side in the longitudinal direction (front-to-back direction) of the secondary fixed horizontal member 68.

[0058] The secondary cutting fixture 220 is set in the same cutting device CA as above and used when cutting the primary cutting plate 10. The third guide portion 223 of the secondary cutting fixture 220 set in the cutting device CA is positioned parallel to the traveling direction CD of the cutting blade CS.

[0059] The fourth guide portion 224 is a portion that abuts against one edge 13 (or 14) of a pair of edges 13, 14 that are perpendicular to the uncut edge 11 (or 12) of the primary cutting plate 10 (the edge opposite the cut edge 101) when the primary cutting plate 10 is fixed to the secondary cutting fixture 220. The secondary cutting fixture 220 of this embodiment has three fourth guide portions 224, but is not limited to this and may have one or two or more fourth guide portions 224.

[0060] The fourth guide portion 224 is formed by one outer surface (flat surface) of the fourth guide member 226. The fourth guide member 226 is joined to the secondary diagonal member 64. A plurality of fourth guide members 226 are arranged side by side in the longitudinal direction of the secondary diagonal member 64.

[0061] The fourth guide portion 224 in this embodiment is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. This predetermined angle can be set appropriately depending on the inclination angle of the cutting edge 101 formed on the primary cutting plate 10. In this embodiment, the fourth guide portion 224 is inclined at 45° with respect to the traveling direction CD of the cutting blade CS, but this is not limited thereto, and the inclination angle (narrow angle) of the fourth guide portion 224 with respect to the traveling direction CD can be set to more than 0° and less than 90°, preferably 30° or more and 60° or less.

[0062] In this embodiment, it is preferable that an imaginary plane including each outer surface (flat surface) of the third guide portion 223 and an imaginary plane including each outer surface (flat surface) of the fourth guide portion 224 have a positional relationship in which they intersect at 45°.

[0063] <Cutting method> The cutting fixture set 200 of this embodiment is used to form the cut plate material 1A from the initial plate material 1 as follows.

[0064] <<First setting process, first fixing process, and first cutting process>> First, a primary cut plate 10 is formed from an initial plate material 1 using a primary cutting fixture 210. The initial plate material 1 is preferably cut offcuts of inorganic decorative boards. This allows for effective use of cut offcuts that would conventionally be discarded.

[0065] 4A and 4B, an inorganic decorative board that is rectangular in plan view is used as the object to be cut CW, and this inorganic decorative board (object to be cut CW) is cut with a cutting blade CS along the traveling direction CD to obtain a rectangular initial plate material 1. Note that Fig. 4A shows a case where the object to be cut CW has two cut locations, and two arrows are shown as the traveling direction CD, but the object to be cut CW may also have one cut location, in which case one cut scrap material is obtained as the initial plate material 1.

[0066] Next, a first setting step and a first fixing step are performed. Either the first setting step or the first fixing step can be performed first. That is, the first setting step can be performed first and then the first fixing step, or the first fixing step can be performed first and then the first setting step.

[0067] The first setting step is a step of setting the primary cutting fixture 210 in the cutting device CA. The cutting device CA is formed in the same manner as above, and the primary cutting fixture 210 is set in the cutting device CA in place of the workpiece CW shown in FIGS. 4A and 4B. The primary cutting fixture 210 is placed on the table CT. The primary fixing piece 38 of the primary cutting fixture 210 is arranged along the ruler portion CR. The claw portion CN is located on the primary fixing piece 38 and presses and fixes the primary cutting fixture 210 onto the table CT.

[0068] In the primary cutting fixture 210 thus set on the cutting device CA, the primary cross member 31 is arranged parallel to the traveling direction CD of the cutting blade CS of the cutting device CA, and the first guide portion 211 and the second guide portion 212 are arranged so as to be inclined at a predetermined angle relative to the traveling direction CD of the cutting blade CS of the cutting device CA. This predetermined angle is 45° in this embodiment, but the predetermined angle changes depending on the inclination angle of the first guide portion 211 and the second guide portion 212 relative to the longitudinal direction of the primary cross member 31.

[0069] The first fixing step is a step of fixing and setting the initial workpiece 1 to the primary cutting fixture jig 210. A plurality of initial workpieces 1 can be set to one primary cutting fixture 210. As shown in FIG. 5, in this embodiment, a plurality of initial workpieces 1 can be arranged in three rows in the front-to-back direction. Furthermore, a plurality of initial workpieces 1 can be stacked vertically (for example, four sheets on top of each other) in each row.

[0070] The initial plate 1 is positioned such that one edge 11 of a pair of opposing edges 11, 12 of the initial plate 1 abuts against the first guide portion 211 of the primary cutting fixture 210. Furthermore, one edge 14 of a pair of edges 13, 14 perpendicular to the one edge 11, 12 of the initial plate 1 abuts against the second guide portion 212 of the primary cutting fixture 210. Of the three rows of initial plate 1, the edge 14 of the initial plate 1 positioned at the rearmost abuts against the second guide portion 212. Of the three rows of initial plate 1, the edge 14 of the initial plate 1 positioned at the front abuts against the edge 13 of the middle initial plate 1. The edge 14 of the middle initial plate 1 abuts against the edge 13 of the rear initial plate 1. The three second guide portions 212 abut against the edge 14 of the rear initial plate 1 at three points. The front pressing tool 43 abuts against the edge 13 of the initial workpiece 1 arranged at the frontmost side, pressing the three rows of initial workpieces 1 toward the second guide section 212. The edge 14 abutting against the second guide section 212 is preferably an edge that was cut by the cutting blade CS when forming the initial workpieces 1. This allows the edge 14 with excellent linearity to abut against the second guide section 212, and the initial workpieces 1 to be positioned accurately.

[0071] The initial plate materials 1 are set in the primary cutting fixture 210 with the primary presser member 4 removed from the primary frame member 3. Specifically, after the primary presser member 4 is released from the engagement by the locking member 41 and removed from the primary frame member 3, multiple initial plate materials 1 are placed on the primary support plate 5 of the primary frame member 3, with one edge 11 abutting against the first guide portion 211. The initial plate materials 1 are arranged in three rows, with the edge 14 of the rearmost initial plate material 1 abutting against the second guide portion 212. The primary presser member 4 is then returned to the primary frame member 3, and the locking member 41 is used to attach and secure the primary presser member 4 to the primary frame member 3. This causes the presser members 42 of the primary presser member 4 to abut against the top surfaces of the initial plate materials 1, pressing and securing the initial plate materials 1 from above. The front presser member 43 abuts against the edge 13 of the frontmost initial plate material 1, pressing the three rows of initial plate materials 1 toward the second guide portion 212. The front pressing tool 43 can be adjusted in position in the front-rear direction and is fixed in a position where it can press firmly.

[0072] The initial plate material 1 set in the primary cutting fixture 210 as described above is set on the table CT of the cutting device CA with the edges 13 and 14 inclined at 45° (indicated by angle α in FIG. 5) relative to the traveling direction CD of the cutting blade CS. The edge 12 of the initial plate material 1 that is not in contact with the first guide part 211 is positioned to protrude to the left of the primary cutting fixture 210. The end of the initial plate material 1 on the side of the edge 12 is positioned across the traveling path of the cutting blade CS.

[0073] Next, the first cutting step is performed. In the first cutting step, after the first fixing step, the cutting blade CS is advanced in the advancing direction CD to cut the initial plate material 1 fixed to the primary cutting fixture 210, thereby obtaining the primary cut plate 10. Here, the initial plate material 1 is cut through the corner where the end edge 12 and the end edge 14 of the initial plate material 1 intersect. The cutting blade CS can be moved from rear to front in the advancing direction CD.

[0074] In this way, the primary cutting plate 10 having the edge 121 (cutting edge 101) inclined relative to the pair of edges 13, 14 can be formed.

[0075] <<Second setting process, second fixing process, and second cutting process>> After the primary cut plate 10 is formed as described above, the primary cut plate 10 is cut using the secondary cutting fixture 220 to form the post-cut plate material 1A.

[0076] First, the second setting step and the second fixing step are performed. Either the second setting step or the second fixing step can be performed first. That is, the second setting step can be performed first and then the second fixing step, or the second fixing step can be performed first and then the second setting step.

[0077] The second setting step is a step of setting the secondary cutting fixture 220 in the cutting device CA. The cutting device CA is formed in the same manner as above, and the secondary cutting fixture 220 is set in the cutting device CA in place of the workpiece CW shown in Figures 4A and 4B. The secondary cutting fixture 220 is placed on the table CT. The secondary fixing piece 67 of the secondary cutting fixture 220 is arranged along the ruler portion CR. The claw portion CN is located on the secondary fixing piece 67 and presses and fixes the secondary cutting fixture 220 onto the table CT.

[0078] In the secondary cutting fixture 220 thus set on the cutting device CA, the secondary cross member 61 is arranged parallel to the traveling direction CD of the cutting blade CS of the cutting device CA, the third guide portion 223 is positioned parallel to the traveling direction CD of the cutting blade CS of the cutting device CA, and the fourth guide portion 224 is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. This predetermined angle is 45° in this embodiment, but the predetermined angle varies depending on the inclination angle of the fourth guide portion 224 with respect to the longitudinal direction of the secondary cross member 61.

[0079] The second fixing step is a step of fixing and setting the primary cutting plate 10 to the secondary cutting fixture 220. A plurality of primary cutting plates 10 can be set to one secondary cutting fixture 220. As shown in FIG. 6, in this embodiment, a plurality of primary cutting plates 10 can be arranged in three rows in the front-to-rear direction. Furthermore, a plurality of primary cutting plates 10 can be stacked vertically (for example, four plates in a row) in each row.

[0080] The primary cutting plate 10 is arranged with the cut edge 101 of the primary cutting plate 10 abutting against the third guide portion 223 of the secondary cutting fixture 220. Furthermore, one edge 14 of the pair of edges 13, 14 of the primary cutting plate 10 abuts against the fourth guide portion 224 of the secondary cutting fixture 220. The edge 14 of the primary cutting plate 10 positioned at the frontmost position among the three rows of primary cutting plates 10 abuts against the fourth guide portion 224. The edge 14 of the primary cutting plate 10 positioned at the rearmost position among the three rows of primary cutting plates 10 abuts against the edge 13 of the middle primary cutting plate 10. The edge 14 of the middle primary cutting plate 10 abuts against the edge 13 of the front primary cutting plate 10. The three fourth guide portions 224 abut against the edge 14 of the front primary cutting plate 10 at three points. The rear pressing tool 73 abuts against the edge 13 of the primary cutting plate 10 arranged at the rearmost side, and presses the three rows of primary cutting plates 10 toward the fourth guide portion 224 side.

[0081] The edge 14 that contacts the fourth guide portion 224 is the same as the edge 14 that contacted the second guide portion 212 in the first fixing step. This allows the edge 14, which has excellent linearity, to contact the fourth guide portion 224, and the primary cutting plate 10 to be positioned accurately. After the first cutting step, the primary cutting plate 10 is set in the secondary cutting fixing jig 220 by being turned over both sides and also turned left and right, or by being rotated 180 degrees in a plan view.

[0082] The primary cutting plates 10 are set in the secondary cutting fixture 220 with the secondary presser members 7 removed from the secondary frame member 6. That is, after the secondary presser members 7 are released from the engagement by the locking members 41 and removed from the secondary frame member 6, the primary cutting plates 10 are placed on the secondary support plate 8 of the secondary frame member 6 with the cutting edge 101 abutting against the third guide portion 223, and the primary cutting plates 10 are arranged in three rows with the edge 14 of the frontmost primary cutting plate 10 abutting against the fourth guide portion 224. Thereafter, the secondary presser members 7 are returned to the secondary frame member 6 and attached and fixed to the secondary frame member 6 with the locking members 41. As a result, the presser members 42 of the secondary presser members 7 abut against the upper surfaces of the primary cutting plates 10, pressing down and fixing the primary cutting plates 10 from above. The rear pressing tool 73 contacts the edge 13 of the rearmost primary cutting plate 10 and presses the three rows of primary cutting plates 10 toward the fourth guide part 224. The position of the rear pressing tool 73 can be adjusted in the front-rear direction, and is fixed in a position where it can firmly press.

[0083] The primary cutting plate 10 set in the secondary cutting fixture 220 as described above is set on the table CT of the cutting device CA with the edges 13 and 14 inclined at 45° (indicated by angle α in FIG. 6) with respect to the traveling direction CD of the cutting blade CS. The edge 11 of the primary cutting plate 10 that is not in contact with the third guide portion 223 is positioned to protrude to the left of the secondary cutting fixture 220. The end of the primary cutting plate 10 on the side of the edge 11 is positioned across the traveling path of the cutting blade CS.

[0084] Next, the second cutting step is performed. In the second cutting step, after the second fixing step, the cutting blade CS is advanced in the advancing direction CD to cut the primary cutting plate 10 fixed to the secondary cutting fixture 220, thereby obtaining a cut plate material 1A. Here, the primary cutting plate 10 is cut through the corner where the edge 11 and the edge 13 of the primary cutting plate 10 intersect. The direction of the cutting blade CS from rear to front can be set as the advancing direction CD.

[0085] In this way, a post-cut plate material 1A having edges 111 and 121 (both cut edges 101) inclined relative to the pair of edges 13 and 14 can be formed.

[0086] (Variation) In the first embodiment, the first cutting step and the second cutting step are performed separately, but this is not limiting. That is, the primary cutting fixture 210 on which the initial workpiece 1 is set and the secondary cutting fixture 220 on which the primary cutting plate 10 is set are placed on a single table CT, and the cutting blade CS is advanced in this state. This allows the step of forming the primary cutting plate 10 from the initial workpiece 1 and the step of forming the cut workpiece 1A from the primary cutting plate 10 to be performed by advancing the cutting blade CS once, improving production efficiency.

[0087] More specifically, first, only the first cutting step is performed to obtain a primary cutting plate 10. Next, this primary cutting plate 10 is removed from the primary cutting fixture 210 and set in the secondary cutting fixture 220. A new initial plate material 1 is set in the now emptied primary cutting fixture 210, and the first and second cutting steps are performed simultaneously with one movement of the cutting blade CS. Next, the cut plate material 1A is removed from the secondary cutting fixture 220, and the primary cutting plate 10 is removed from the primary cutting fixture 210 and set in the now emptied secondary cutting fixture 220. A new initial plate material 1 is set in the now emptied primary cutting fixture 210, and the first and second cutting steps are performed simultaneously with one movement of the cutting blade CS. By repeating this process, a cut plate material 1A is obtained.

[0088] (Second embodiment) The cutting fixture jig set 200 according to this embodiment differs from the cutting fixture jig set 200 according to the first embodiment in the positions and inclination directions of the first guide portion 211, the second guide portion 212, the third guide portion 223, and the fourth guide portion 224. Hereinafter, the same components as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted as appropriate. The components described in the second embodiment can be applied in appropriate combination with the components (including modified examples) described in the first embodiment.

[0089] 7A to 7C show a primary cutting fixture 210 of this embodiment. This primary cutting fixture 210 differs from the primary cutting fixture 210 of the first embodiment shown in FIGS. 1A to 1C in the position and inclination direction of a first guide portion 211.

[0090] The first guide portion 211 is disposed in a portion rearward of the center portion in the longitudinal direction (front-rear direction) of the primary cross member 31. The direction perpendicular to the first guide portion 211 extends diagonally forward and left when viewed from the first guide portion 211. The direction perpendicular to the second guide portion 212 extends diagonally forward and right when viewed from the second guide portion 212.

[0091] As in the first embodiment, it is preferable that the imaginary plane including each outer surface (flat surface) of the first guide portion 211 and the imaginary plane including each outer surface (flat surface) of the second guide portion 212 have a positional relationship in which they are perpendicular to each other.

[0092] 8A to 8C show a secondary cutting fixture 220 of this embodiment. This secondary cutting fixture 220 differs from the secondary cutting fixture 220 of the first embodiment shown in FIGS. 2A to 2C in the position of the third guide portion 223.

[0093] The third guide portion 223 is disposed in a portion forward of the center portion in the longitudinal direction (front-to-back direction) of the secondary cross member 61. The direction perpendicular to the third guide portion 223 extends leftward when viewed from the third guide portion 223. The direction perpendicular to the fourth guide portion 224 extends diagonally rearward and leftward when viewed from the fourth guide portion 224.

[0094] As in the first embodiment, it is preferable that an imaginary plane including each outer surface (flat surface) of the third guide portion 223 and an imaginary plane including each outer surface (flat surface) of the fourth guide portion 224 intersect at an angle of 45°.

[0095] 9 shows the initial workpiece 1 set in the primary cutting fixture 210. Compared to FIG. 5 of the first embodiment, in this embodiment, the initial workpiece 1 is arranged so as to extend diagonally forward and left from the first guide portion 211. In the first embodiment, the initial workpiece 1 is arranged so as to extend diagonally backward and left from the first guide portion 211.

[0096] 10 shows a state in which the primary cutting plate 10 is set in the secondary cutting fixture 220. Compared to FIG. 6 of the first embodiment, in this embodiment, the primary cutting plate 10 is arranged to extend diagonally left forward from the third guide portion 223. In the first embodiment, the primary cutting plate 10 is arranged to extend diagonally left rearward from the third guide portion 223.

[0097] The choice of either the first or second embodiment is determined by the material of the plate, the value of α, the cutting speed, etc., so as to prevent chipping and burrs from occurring. However, in the case of materials that are hard and prone to chipping, such as inorganic decorative panels, it is preferable to cut from the acute edge of the product.

[0098] (summary) The first aspect is a cutting fixture set 200 used when cutting off a pair of opposing edges 11, 12 of a rectangular initial plate material 1. The cutting fixture set 200 includes a primary cutting fixture 210 and a secondary cutting fixture 220. The primary cutting fixture 210 is used to fix the initial plate material 1 and perform the primary cutting. The secondary cutting fixture 220 is used to fix the primary cut plate 10 obtained by the primary cutting and perform the secondary cutting. The primary cutting fixture 210 includes a first guide portion 211 and a second guide portion 212. One edge 11 of the pair of edges 11, 12 abuts against the first guide portion 211. One edge 13 (14) of the other pair of edges 13, 14 that is perpendicular to the one edge 11, 12 abuts against the second guide portion 212. The first guide portion 211 and the second guide portion 212 are each inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS. The secondary cutting fixture 220 includes a third guide portion 223 and a fourth guide portion 224. The cut edge 101 of the primary cutting plate 10 abuts against the third guide portion 223. The fourth guide portion 224 abuts against one or the other of the other pair of edges 13, 14. The third guide portion 223 is positioned parallel to the traveling direction CD of the cutting blade CS. The fourth guide portion 224 is inclined at a predetermined angle with respect to the traveling direction CD of the cutting blade CS.

[0099] According to this embodiment, the initial plate material 1 can be fixed at a predetermined angle with respect to the traveling direction CD of the cutting blade CS using the primary cutting fixture 210, and the primary cutting plate 10 can be fixed at a predetermined angle with respect to the traveling direction CD of the cutting blade CS using the secondary cutting fixture 220, allowing rectangular plate material to be cut diagonally with high precision.

[0100] The second embodiment is the cutting fixture set 200 according to the first embodiment, which is used when cutting the initial plate material 1 into a herringbone shape.

[0101] According to this aspect, a herringbone-shaped plate material can be easily formed.

[0102] The third embodiment is the cutting fixture set 200 of the first or second embodiment, in which the initial board material 1 is a cut off scrap of an inorganic decorative board.

[0103] According to this aspect, it is possible to effectively utilize the cut off scraps of the inorganic decorative board.

[0104] The fourth embodiment is a method for cutting a rectangular initial plate 1 using the cutting fixture set 200 according to any one of the first to third embodiments. a first setting step of setting the primary cutting fixture 210 in the cutting device CA so that the first guide portion 211 and the second guide portion 212 are inclined at a predetermined angle relative to the traveling direction CD of the cutting blade CS of the cutting device CA; a second setting step of setting the secondary cutting fixture 220 in the cutting device CA so that the third guide portion 223 is positioned parallel to the traveling direction CD of the cutting blade CS of the cutting device CA and the fourth guide portion 224 is inclined at a predetermined angle relative to the traveling direction CD of the cutting blade CS; and a second setting step of abutting one edge 11 of a pair of opposing edges 11, 12 of the initial plate material 1 against the first guide portion 211 of the primary cutting fixture 210, and placing one edge 13 (14) of another pair of edges 13, 14 perpendicular to the one edge 11, 12 against the second guide portion 212 of the primary cutting fixture 210. a first fixing step of fixing the initial plate material 1 to the primary cutting fixture 210 so that the first guide portion 223 of the secondary cutting fixture 220 abuts the first end edge 101 of the primary cutting plate 10; a second fixing step of abutting the cut end edge 101 of the primary cutting plate 10 against the third guide portion 223 of the secondary cutting fixture 220 and abutting one or the other end edge 13, 14 of the other pair of end edges 13, 14 of the initial plate material 1 cut in the first cutting step against the fourth guide portion 224 of the secondary cutting fixture 220; a first cutting step of cutting the initial plate material 1 fixed to the primary cutting fixture 210 into a primary cutting plate 10 by advancing the cutting blade CS along the advancing direction CD after the first fixing step; and a second cutting step of cutting the primary cutting plate 10 fixed to the secondary cutting fixture 220 by advancing the cutting blade CS along the advancing direction CD after the second fixing step.

[0105] According to this embodiment, the initial plate material 1 can be fixed at a predetermined angle with respect to the traveling direction CD of the cutting blade CS using the primary cutting fixture 210, and the primary cutting plate 10 can be fixed at a predetermined angle with respect to the traveling direction CD of the cutting blade CS using the secondary cutting fixture 220, allowing rectangular plate material to be cut diagonally with high precision. [Explanation of symbols]

[0106] 1 Initial board material 10 Primary cutting board 11 Edge 12 Edge 13 Edge 14 Edge 101 Cut edge 200 Cutting Fixture Set 210 Primary cutting fixture 211 First guide section 212 Second guide section 220 Secondary cutting fixture 223 Third Guide Section 224 4th Guide Section CA cutting device CS cutting blade CD direction of travel

Claims

1. A cutting fixture set used when cutting a pair of opposing edges of a rectangular initial plate material, a primary cutting fixture jig used to fix the initial plate material and perform primary cutting; a secondary cutting fixing jig for fixing the primary cut plate obtained by the primary cutting and used in secondary cutting, The primary cutting fixture is a first guide portion to which one of the pair of end edges abuts; a second guide portion to which one edge of another pair of edges perpendicular to the one edge is abutted, the first guide portion and the second guide portion are inclined at a predetermined angle with respect to the direction of travel of the cutting blade, The secondary cutting fixture includes: a third guide portion against which the cut edge of the primary cutting plate abuts; a fourth guide portion to which one or the other of the other pair of edges abuts, The third guide portion is positioned parallel to the direction of travel of the cutting blade, The fourth guide portion is inclined at a predetermined angle with respect to the direction of travel of the cutting blade. Cutting fixture set.

2. Used when cutting the initial plate material into a herringbone shape.

2. The cutting fixture set according to claim 1.

3. The initial board material is a cutting scrap of an inorganic decorative board.

2. The cutting fixture set according to claim 1.

4. A method for cutting a rectangular initial plate material using the cutting fixture set according to any one of claims 1 to 3, comprising: a first setting step of setting the primary cutting fixture on the cutting device so that the first guide portion and the second guide portion are inclined at a predetermined angle with respect to a direction of travel of a cutting blade of the cutting device; a second setting step of setting the secondary cutting fixture on the cutting device so that the third guide portion is positioned parallel to a direction of travel of a cutting blade of the cutting device and the fourth guide portion is inclined at a predetermined angle with respect to the direction of travel of the cutting blade; a first fixing step of fixing the initial plate material to the primary cutting fixture by abutting one edge of a pair of opposing edges of the initial plate material against the first guide portion of the primary cutting fixture and abutting one edge of another pair of edges perpendicular to the one edge against the second guide portion of the primary cutting fixture; a second fixing step of abutting the cut edge of the primary cutting plate against the third guide portion of the secondary cutting fixture, and abutting one or the other edge of the other pair of edges of the initial plate material cut in the first cutting step against the fourth guide portion of the secondary cutting fixture; a first cutting step of cutting the initial plate material fixed to the primary cutting fixture by advancing the cutting blade along the advancing direction after the first fixing step, to obtain the primary cut plate; a second cutting step of cutting the primary cutting plate fixed to the secondary cutting fixture by advancing the cutting blade along the advancing direction after the second fixing step; A cutting method comprising:

Images