JP2013099811A - Cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting machine that can prolong the life of a cutting blade and reducing replacement work of the cutting blade with a simple structure.SOLUTION: Cutting of a sheet article 4 is carried out at an operation position 5c which is a part of a blade edge 5b in the stuck state of an inclination cutting blade 5 into the sheet article 4 from above. In order to lift and move the inclination cutting blade 5, a cutting blade lifting mechanism 6 is provided. Even when the blade edge 5b reaches its life at one operation position 5c, cutting is continued by changing to another operation position 5c by a control part 7. Since the blade edge 5b is inclined, a distance between the reference position and the operation position 5c of a cutting head 2 changes depending on the height of the operation position 5c to a blade tip 5a. For this change amount, cutting is continued without any errors by correcting cutting data to control the cutting head 2 by the control part 7.

Description

  The present invention relates to a cutting machine for cutting a sheet-like material, in particular, a hard industrial material containing carbon fiber according to preset data.

  Conventionally, in order to cut prepregs and various plastic sheets, which are intermediate materials for molding industrial materials such as fiber reinforced plastic (FRP) containing carbon fiber, into arbitrary shapes, sheet cutting devices (for example, patents) It has been proposed to use Document 1). In this sheet-like material cutting device, the sheet-like material is spread on a flat table, the tip of a cutting blade having a blade edge formed obliquely is brought into contact with the blade, and the cutting blade is brought into contact with the sheet-like material. Cutting is performed by relatively moving the edges in the inclined direction. If cutting of hard industrial materials is continued, the portion where the blade edge cuts the sheet-like material will be worn, the sharpness will be dulled, blade spillage or blade chipping will easily occur, making cutting difficult. In Patent Document 1, a technique for extending the life of a cutting blade by sequentially using the blade edges on both sides is provided as a prior art by providing an inclined blade edge on both sides of the tip of the cutting blade and forming a chevron. ing. In the invention disclosed in Patent Document 1, the edge of the cutting edge is formed in an arc shape, the position of the blade edge that can be used for cutting is increased, and the life of the cutting edge is further extended.

  For a sheet-like material made of a relatively soft material such as a woven fabric or a knitted fabric, the surface of the sheet-like material is placed on the surface of the table in accordance with cutting data set in advance. A cutting machine that cuts along the XY plane is used (see, for example, Patent Document 2). The cut sheet-like material is sewn to produce clothing and the like. The sheet-like object to be cut is placed on the table in a state where a plurality of sheets are stacked. The cutting blade that performs cutting has a blade edge formed on an upright side, and is inserted into the sheet-like material from above, and proceeds in the direction of the blade edge while repeatedly moving up and down to cut the sheet-like material. . The surface of the table is configured such that a blade of a cutting blade can enter the inside from above, such as a bristle brush or felt. Some cutters are used for cutting by rotating a disc-shaped cutting blade having a blade edge formed on the outer periphery. Patent Document 2 also discloses a technique for extending the life of the cutting blade by polishing the blade edge.

Japanese Patent Laid-Open No. 3-43189 Japanese Patent Laid-Open No. 7-60686

  Since industrial materials such as prepreg contain hard fibers, the cutting edge of the cutting blade is rapidly consumed by cutting. Further, it coexists with a soft and uncured resin, and when it is cut with a cutting blade that moves up and down as used in a conventional cutting machine, powdery cutting waste is generated, and the cut surface is also wavy. Such a defect does not occur when cutting without moving the cutting blade up and down, but since the working position of the blade edge remains the same, it easily wears, and blade spillage and chipping are likely to occur. If these occur and cutting becomes difficult, the life of the cutting blade comes, and it becomes necessary to replace the cutting blade, which takes time.

  When the angled cutting blade introduced in Patent Document 1 is used, it is only expected that the service life will be doubled by using both directions. When using a cutting blade whose blade edge is formed in an arc shape, the sheet-like material is cut at two positions of the arc-shaped blade edge inserted into the sheet-like material. Since a gap is required between the two positions, if the curvature of the part to be cut increases or the adjacent density between the parts to be cut increases, the cutting position will shift or the adjacent cutting on the rear side in the cutting direction. There is a risk of damaging the part. The same applies when a circular cutting blade is used in the cutting machine.

  Furthermore, uncured resin contained in the prepreg or the like is likely to adhere near the edge of the cutting blade. The adhering material near the edge of the blade becomes an obstacle such as deterioration of the sharpness of the cutting blade, and cutting becomes difficult even if the life of wear as the cutting blade remains. In order to perform the operation of removing the deposit from the cutting blade, the cutting must be stopped, which takes time and reduces the cutting efficiency.

  An object of the present invention is to provide a cutting machine capable of extending the life of a cutting blade with a simple configuration and reducing the replacement work of the cutting blade.

The present invention cuts a sheet-like object placed on the surface of a table in which the blade can enter from above, according to preset cutting data, along an XY plane along the surface of the sheet-like object. In the machine
It has a blade shape that protrudes downward in the lower part and a blade edge that rises while tilting sideways from the blade edge. An inclined cutting blade for cutting the object,
A cutting blade lifting mechanism that raises and lowers the inclined cutting blade and changes the action position of the blade edge for cutting the sheet-like material;
Control for controlling the relative movement of the sheet-like object and the inclined cutting blade so as to cut the sheet-like object while correcting the cutting data according to the action position of the blade edge changed by the cutting blade lifting mechanism. Part
It is a cutting machine characterized by including.

The control unit of the present invention includes:
Setting a plurality of positions of the blade edge as the action position;
Monitor and memorize the amount of cutting at each working position,
Control to switch the action position according to the cutting amount.
It is characterized by that.

  The inclined cutting blade according to the present invention is a double-edged blade having the blade edge on both sides of the cutting edge.

Further, the present invention provides a scraper that slides on the lower portion of the inclined cutting blade and removes deposits on the inclined cutting blade when the inclined cutting blade is raised and lowered by the cutting blade lifting mechanism.
It is further characterized by including.

Further, according to the cutting data, the control unit of the present invention is a portion where the sheet-like material is to be cut, and when the cutting density is high or the cutting curvature is large, the operation position is the inclination cutting blade. Control to be near the bottom,
It is characterized by that.

The inclined cutting blade and the cutting blade lifting mechanism of the present invention are provided in a cutting head that moves above the surface of the sheet-like material,
In the cutting head, the inclined cutting blade and the upright cutting blade formed so that the blade edge stands upright in the vertical direction can be exchanged,
For the cutting head,
A repetitive drive mechanism that can be driven to reciprocate up and down the upright cutting blade,
In addition,
It is characterized by that.

  According to the present invention, the cutting blade lifting mechanism is moved up and down by the cutting blade lifting mechanism to change the working position of the blade edge for cutting the sheet-like material, so even if the life as a cutting blade for a specific working position is exhausted, The lifetime of the entire cutting blade can be extended. The control unit controls the relative movement between the sheet-like object and the inclined cutting blade so as to cut the sheet-like object while correcting the cutting data according to the changed working position of the blade edge. Cutting can be continued according to the cutting data for the object. With a simple configuration that only changes the action position of the edge of the inclined cutting blade and corrects the cutting data, it is possible to extend the life of the cutting blade and reduce the replacement work of the cutting blade.

  Further, according to the present invention, a plurality of operation positions can be used properly, and the life as a cutting blade can be extended to a multiple of that when a single operation position is used.

  Further, according to the present invention, since both blades having blade edges on both sides of the blade edge are used as the inclined cutting blade, cutting can be performed using both directions of the inclined blade edge, and the life as the cutting blade is doubled. Can be extended.

  Further, according to the present invention, since the deposits on the inclined cutting blade can be removed by the scraper, it is possible to avoid the obstacle to the cutting by the deposits.

  Further, according to the present invention, by using the vicinity of the lower end of the inclined cutting blade, the risk of damaging the adjacent cutting portion in a place where the cutting density is high is reduced, and it is possible to accurately cut a portion having a large curvature. Can do.

  Further, according to the present invention, depending on the material of the sheet-like material, a hard material is cut using an inclined cutting blade, and a soft material is moved up and down using an upright cutting blade. Appropriate cutting can be performed on a wide range of materials.

FIG. 1 is a diagram showing a schematic configuration of a main part of a cutting head 2 of a cutting machine 1 as an embodiment of the present invention. FIG. 2 is a diagram showing a basic idea of the present invention for extending the life when a single-edged cutting blade is used, and further showing an example of a double-edged cutting blade used for extending the life. FIG. 3 is a simplified front view showing the configuration of the cutting head 2 of FIG. 1 with the nut member 17 at the origin position, the cutting blade cylinder 20 in the operating state, and the dough holding cylinder 24 in the inactive state. FIG. 4 is a partial right side view of FIG. FIG. 5 is a simplified front view showing the operating state of the cutting blade lifting mechanism 6 and the cloth presser 8 of FIG. FIG. 6 is a plan view showing the configuration of the scraper 40 provided in the cutting head 2 shown in FIG. 3, a front view showing the attached state of the scraper 40, and a right side view showing an action state of the scraper 40 on the inclined cutting blade 5. . FIG. 7 is a front view showing a schematic configuration of a cutting unit 50 used for cutting with the cutting head 2 of FIG. 1 using the reciprocating mechanism 19.

  An embodiment of the present invention will be described below with reference to FIGS. In the description of each figure, the reference numerals that do not exist in the drawing but are described in the drawings described above are used, or the parts that correspond to the parts shown in the drawings described above are the same. May be added, or duplicate descriptions may be omitted.

  FIG. 1 shows a schematic configuration of a main part of a cutting machine 1, particularly a cutting head 2, as an embodiment of the present invention. The basic configuration of the cutting machine 1 and the cutting head 2 is equivalent to the configuration described in Patent Document 2. That is, the cutting head 2 performs cutting while moving on the XY plane along the surface of the sheet-like object 4 placed on the horizontal table 3. The table 3 has bristle brushes 3a arranged side by side and is formed of bristles standing upright from below, has a breathable surface, and can hold the sheet-like material 4 by sucking from below the bristle brushes 3a. The bristles are formed of synthetic resin or the like, and the blade of the cutting blade can enter the inside from above the surface. The surface of the table 3 may be formed of felt or the like.

  The cutting head 2 of this embodiment is provided with an inclined cutting blade 5 as a cutting blade. The inclined cutting blade 5 is generally in the form of a piece, and has a cutting edge 5a protruding downward at the lower part. The inclined cutting blade 5 has a blade edge 5b that rises while being inclined on the side of the blade edge 5a. The inclined cutting blade 5 of the present embodiment is a double-edged blade and has blade edges 5b on both sides of the blade edge 5a. Cutting with respect to the sheet-like material 4 is performed at an action position 5c that becomes a part of the blade edge 5b in a state where the inclined cutting blade 5 is pierced into the sheet-like material 4 from above. In order to move the inclined cutting blade 5 up and down, a cutting blade lifting mechanism 6 is provided. Control of the cutting blade lifting mechanism 6 is performed by the control unit 7. The control unit 7 is provided to perform overall control of the cutting machine 1 including movement of the cutting head 2 in the XY plane. The surface of the sheet-like material 4 on which the inclined cutting blade 5 cuts can be pressed by the fabric presser 8. The direction of the inclined cutting blade 5 can be changed around the axis perpendicular to the surface of the table 3 by the R-axis unit 9.

  The cutting blade lifting mechanism 6 includes a ball screw mechanism that is driven by a lift motor 10. The ball screw mechanism is provided with a pulley 11, a timing belt 12, a pulley 13, and a screw rod 14. The pulley 11 is attached to the output shaft of the lift motor 10, and the pulley 13 is attached to the screw rod 14. The timing belt 12 is stretched between the pulleys 11 and 13. The screw rod 13 is supported by the frames 15 and 16 of the cutting head 2 so as to be rotatable up and down. The lift motor 10 is also attached to the frame of the cutting head 2. A nut member 17 is screwed onto the screw rod 14, and the nut member 17 moves up and down as the screw rod 14 rotates. A Z-axis cylinder 18 is attached to the nut member 17, and the Z-axis cylinder 18 moves the reciprocating mechanism 19 up and down with respect to the ball screw mechanism in the Z-axis direction. The reciprocating mechanism 19 is provided to vibrate the cutting blade up and down as disclosed in, for example, Patent Document 2. However, when only the inclined cutting blade 5 is used, it is not necessary to provide it because it does not vibrate up and down.

  A cutting blade cylinder 20 is also attached to the nut member 17. The cutting blade cylinder 20 is used for switching between an operation state in which the inclined cutting blade 5 pierces the sheet-like object 4 and performs cutting and an inoperative state in which the blade edge 5 a is separated from the surface of the sheet-like object 4. The output rod of the cutting blade cylinder 20 is attached to the lifting base 21. The elevating base 21 supports the R-axis unit 9. A guide shaft 22 extends downward from the R-axis unit 9. The material presser 8 is guided by the guide shaft 22 and biased so as to be pulled upward by a spring 23 provided on the upper portion of the guide shaft 22. In order to move the fabric presser 8 biased upward in this way up and down, a fabric presser cylinder 24 is attached to the lift base 21. The output rod 24a of the dough pressing cylinder 24 protrudes downward, and a connection unit 25 is attached to the tip. The connection unit 25 lowers the fabric presser 8 against the bias of the spring 23 when the fabric presser cylinder 24 is operated so as to project the output rod 24a. In a state in which the fabric presser cylinder 24 is operated, the fabric presser 8 is in a state of pressing the surface of the sheet-like object 4, and is in a state of floating from the surface of the table 3 by the thickness of the sheet-like object 4. This thickness is detected by an encoder 28 via a rack 26 provided above the connection unit 25 and a pinion 27 meshing with the teeth of the rack 26. An R-axis motor 29 for rotating the R-axis unit 9 is also attached to the lift base 21.

  FIG. 2 shows a configuration related to the inclined cutting blade 5 of FIG. FIG. 2A shows that when the inclined cutting blade 5 is a single blade, the distances L1 and L2 from the cutting edge 5a to the action position 5c vary depending on the depths D1 and D2 pierced from the surface of the sheet-like object 4. It shows that. FIG. 2B shows the shape of the double-edged inclined cutting blade 5 and the holder 30 used for attachment to the cutting head 2. FIG.2 (c) shows the example which makes the inclination cutting blade 5 another shape.

  As shown in FIG. 2A, if the depths D1 and D2 at which the inclined cutting blade 5 is pierced into the sheet-like object 4 are changed, the action position 5c for cutting the sheet-like object 4 at the blade edge 5b can be changed. . In this way, if the action position 5c is changed, even if one action position 5c is worn out and the sharpness is deteriorated, blade spillage or chipping occurs, the life as the blade edge 5b is reached. The cutting can be continued at the operation position 5c. The control unit 7 according to the present embodiment monitors and manages a cutting amount such as a cutting distance at each operation position 5c, and when the cutting amount at the operation position in use exceeds a limit value set as a lifetime. Since the next operation position 5c is controlled, the life of the inclined cutting blade 5 can be extended. For example, in the inclined cutting blade 5 in which the blade edge 5b is provided to a depth of about 6 mm, the three operation positions 5c can be switched every 2 mm.

  When a plurality of action positions 5c having different heights are used as described above, the action positions may be switched during cutting, but for each marker to be cut at once as the sheet-like material 4, for each part in each marker, etc. Then, it may be switched. The control unit 7 monitors and stores the cutting amount at each operation position 5c, and controls that the operation position 5c is not used when the integrated value of the cutting amount exceeds the limit amount or approaches the limit amount. I do.

  However, since the blade edge 5b is inclined, the action position 5c relative to the reference position of the cutting head 2, for example, the R-axis position, changes depending on the height of the action position 5c with respect to the blade edge 5a. However, this change can be cut without error by the control unit 7 correcting the cutting data and controlling the cutting head 2.

  Further, in the inclined cutting blade 5, the distance L1 from the blade edge 5a applied to the sheet-like material 4 to the action position 5c is shorter in the shallower D1 having the piercing depths D1 and D2. A shorter distance is suitable for cutting a portion having a large curvature or a portion having a high cutting density. Therefore, the control unit 7 preferably performs control based on the cutting data so that cutting is performed using the vicinity of the cutting edge 5a having a shallow depth as necessary. Although the switching of the height of the action position 5c may be performed during the cutting, the control unit 7 determines the cutting blade 5 from the sheet-like material 4 when the switching is necessary based on the cutting data. Control may be performed so that cutting is performed in a state where the wire is pulled up from the position.

  2B, the blade edge 5b can be provided on both sides of the blade edge 5a with the inclined cutting blade 5, and the life can be further extended compared with the case where the blade edge 5b is provided only on one side. be able to. For example, if the inclination angle θ1 is about 65 °, the blade edges 5b can be provided on both sides by a depth of 8 mm. Such an inclined cutting blade 5 is attached and fixed to the cutting head 2 while being sandwiched from both sides by two holders 30. In the holder 30, the periphery of the inclined cutting blade 5 is tightened with screws 31, 32, 33, 34, and 35.

  As shown in FIG. 2 (c), the inclined cutting blade 5 can have various shapes even if it is a double blade. Further, the inclination angle θ2 of the blade edge 5b can be made smaller or larger than θ1.

  3 and 4 show the cutting head 2 shown in FIG. 1 in the original position where the nut member 17 is raised to the upper limit, and the cutting blade cylinder 20 is in the operating state where the lifting base 21 is lowered. The structure which the cylinder 24 raises the fabric retainer 8 and makes it the non-operation state is shown. The lift amount by the ball screw mechanism is larger than the lift amount by the cutting blade cylinder 20, and the cutting edge 5 a of the inclined cutting blade 5 does not descend to the surface of the sheet-like object 4 at the origin position.

  Although not shown in FIG. 1, when the cutting blade attached to the reciprocating mechanism 19 is polished on the elevating base 21, the grindstone motor 36 for driving the grindstone to rotate, and the rotation of the R-axis unit 9 at the time of polishing are used. A brake 37 to be stopped is also attached. A scraper 40 is provided on the bottom surface 8a of the dough presser 8 through which the inclined cutting blade 5 penetrates to scrape off deposits on the inclined cutting blade 5. On the bottom surface 8a, a recess 8c into which the flat portion 40a of the scraper 40 is fitted is formed around the through hole 8b through which the inclined cutting blade 5 and the holder 30 and the like pass. The scraper 40 is attached to the lift base 21 via the guide member 41 in a state where it can be moved up and down.

  FIG. 5 shows a simplified operation state of the cutting blade lifting mechanism 6 and the cloth presser 8 of FIG. FIG. 5A shows an operation state in which the material presser 8 presses the surface of the sheet-like material 4 by stopping the pulling of the material presser 8 by the material presser cylinder 24 from the state of FIGS. 3 and 4. The ball screw mechanism also starts to descend the inclined cutting blade 5, and the blade edge 5 a pierces the surface of the sheet-like object 4. FIGS. 5B and 5C show a state in which the inclined cutting blade 5 is further lowered as compared with FIG. 5A. 5 (b) and FIG. 5 (c) are different in the action position 5c of the blade edge 5b, the life of the inclined cutting blade 5 can be increased by switching the depth at which the inclined cutting blade 5 is pierced into the sheet-like object 4. Can be extended. FIG. 5D shows the state of FIG. 5C in which the cutting blade cylinder 20 is deactivated, the lifting base 21 is raised, and the cutting edge 5a of the inclined cutting blade 5 is separated from the surface of the sheet-like object 4. Indicates the state.

  FIG. 6 shows a configuration related to the scraper 40 that scrapes off the deposits on the inclined cutting blade 5. As shown in FIG. 6A, the flat portion 40a of the scraper 40 is provided with a through hole 40b through which the inclined cutting blade 5 passes. In the penetrating state, the gap between the inclined cutting blade 5 and the through hole 40b is small, and if there is a deposit on the surface of the inclined cutting blade 5, it can be scraped off on the surface of the flat portion 40a. A mounting portion 40c stands upright from one side of the flat portion 40a, and a spring hooking portion 40d is provided at the upper end thereof. As shown in FIG. 6 (b), the attachment portion 40 c is provided with a long hole 40 e for attachment to the guide member 41, and is attached in a state where it can be moved up and down by screws 42 and 43. As shown in FIG. 6C, the lower end of the tension spring 44 is hung on the spring hooking portion 40 d provided at the upper end of the scraper 40. The upper end of the tension spring 44 is hung on the upper part of the guide member 41.

  Since the through hole 40b of the scraper 40 has a shape close to the cross section of the inclined cutting blade 5, as shown in FIG. 6C, in the state where the inclined cutting blade 5 is lowered relative to the material presser 8. The lower end of the holder 30 is pushed down. When the inclined cutting blade 5 rises relative to the dough presser 8, the scraper 40 is pulled by the tension spring 44, and the flat portion 40a can be raised up to the recess 8c of the dough presser 8, but the through hole 8b. Since the opening area is smaller than the flat portion 40a, the flat portion 40a is prevented from rising by the recess 8c. When cutting the sheet-like material 4, when moving between the cutting parts, the cutting blade cylinder 40 is inactivated, the inclined cutting blade 5 is raised, and when cutting the cutting parts, the cutting blade cylinder 40 is operated, The inclined cutting blade 5 is lowered. By such ascending / descending of the inclined cutting blade 5, removal of the deposits by the scraper 40 is performed in parallel.

  When a prepreg is used as the sheet-like material 4 to be cut, the prepreg is impregnated with an uncured thermosetting resin such as an epoxy resin together with hard portions such as carbon fiber, glass fiber, and aramid fiber. In order to cut the hard part, for example, a cemented carbide is used as the material of the inclined cutting blade 5. However, the impregnated uncured resin is liable to be attached to the inclined cutting blade 5. When the amount of deposits on the inclined cutting blade 5 increases, the sharpness becomes dull and cutting becomes difficult. By using the scraper 40, the deposits can be removed. In addition, since the adhered matter also adheres to the rear of the blade edge 5b, when using the double-edged cutting blade 5, if it is switched to the blade edge 5b having a different orientation by rotating the R-axis before attaching a large amount, Deposits can be removed while cutting. Such switching of the direction of the blade is also performed by the control unit 7.

  FIG. 7 shows a schematic configuration of a cutting unit 50 used when cutting with the cutting head 2 of FIG. 1 using the reciprocating mechanism 19. In the cutting unit 50, an upright cutting blade 55 is used. In the upright cutting blade 55, the blade edge 55a is formed on the upright side. The upright cutting blade 55 is guided by the knife guide 56 and cuts the sheet-like material 4 while being driven up and down by the reciprocating mechanism 19 which is a repetitive driving mechanism. The material of the upright cutting blade 55 is a hard steel material such as tool steel, which can be used while being polished by the grindstone unit 57, and can cut a relatively soft material efficiently. By replacing the cutting unit 50 and the fabric retainer 58 with the inclined cutting blade 5 and its attachment portion shown in FIG. 1 and the fabric retainer 8, it is possible to appropriately cut a wide range of materials.

  Further, the upright cutting blade 55 can be provided with irregularities on the blade edge 55a to have a sawtooth shape, and if a sawtooth cutting blade is used, an elastic material such as rubber can be cut efficiently.

DESCRIPTION OF SYMBOLS 1 Cutting machine 2 Cutting head 3 Table 4 Sheet-like object 5 Inclined cutting blade 5a Blade edge 5b Blade edge 5c Action position 6 Cutting blade raising / lowering mechanism 7 Control part 8 Material presser 9 R axis unit 10 Lift motor 20 Cutting blade cylinder 24 Material presser cylinder 30 Holder 40 Scraper 50 Cutting unit 55 Upright cutting blade 57 Wheel unit

Claims (6)

In a cutting machine that cuts a sheet-like object placed on the surface of a table into which the blade can enter from above, according to preset cutting data, along an XY plane along the surface of the sheet-like object,
It has a blade shape that protrudes downward in the lower part and a blade edge that rises while tilting sideways from the blade edge. An inclined cutting blade for cutting the object,
A cutting blade lifting mechanism that raises and lowers the inclined cutting blade and changes the action position of the blade edge for cutting the sheet-like material;
Control for controlling the relative movement of the sheet-like object and the inclined cutting blade so as to cut the sheet-like object while correcting the cutting data according to the action position of the blade edge changed by the cutting blade lifting mechanism. Part
Cutting machine characterized by including. The controller is
Setting a plurality of positions of the blade edge as the action position;
Monitor and memorize the amount of cutting at each working position,
Control to switch the action position according to the cutting amount.
The cutting machine according to claim 1, wherein:   The cutting machine according to claim 1 or 2, wherein the inclined cutting blade is a double blade having the blade edge on both sides of the cutting edge. A scraper that slides in contact with the lower portion of the inclined cutting blade and removes deposits on the inclined cutting blade when the inclined cutting blade is raised and lowered by the cutting blade lifting mechanism;
The cutting machine according to any one of claims 1 to 3, further comprising: In accordance with the cutting data, the control unit is a portion to cut the sheet-like material, and when the cutting density is high or the cutting curvature is large, the operation position is near the lower end of the inclined cutting blade. To control,
The cutting machine according to any one of claims 1 to 4, wherein: The inclined cutting blade and the cutting blade lifting mechanism are provided in a cutting head that moves above the surface of the sheet-like object,
In the cutting head, the inclined cutting blade and the upright cutting blade formed so that the blade edge stands upright in the vertical direction can be exchanged,
For the cutting head,
A repetitive drive mechanism that can be driven to reciprocate up and down the upright cutting blade,
In addition,
The cutting machine according to any one of claims 1 to 5, wherein:

Images