Cutting device

Abstract

To acquire more accurate information about force acting between a cutting blade and an object to be cut.SOLUTION: A cutting device 10 includes a first table 21 having a first mounting surface 21A, a second table 22 having a second mounting surface 22A and being disposed side by side with the first table 21, a cutting blade 83 that can cut an object to be cut mounted on the first mounting surface 21A and the second mounting surface 22A, a first dynamometer 71 capable of detecting the magnitude of force acting on the first table 21, a second dynamometer 72 capable of detecting the magnitude of force acting on the second table 22, and a processing device 90 for acquiring a detection result of the first dynamometer 71 and a detection result of the second dynamometer 72. When the cutting device 10 is viewed in a direction perpendicular to the first mounting surface 21A, both the first mounting surface 21A and the second mounting surface 22A are located within a range in which a blade edge 83A of the cutting blade 83 exists.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cutting device. [Background technology]

[0002] The dicing device disclosed in Patent Document 1 includes a chucking device, a voltage element, and a blade. The chucking device is box-shaped. The voltage element is sheet-shaped. The voltage element is placed on the upper surface of the chucking device. The voltage element is divided into multiple cells. The semiconductor wafer to be processed is attracted to the upper surface of the voltage element by the suction function of the chucking device. The blade is disk-shaped. The blade is driven to rotate. The blade moves in one direction along the upper surface of the chucking device. At the same time, the blade cuts the semiconductor wafer. Each cell of the voltage element detects the load acting on it as the semiconductor wafer is cut. This load reflects the force acting between the blade and the semiconductor wafer when the semiconductor wafer is cut. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-335592 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology of Patent Document 1, the information that can be obtained regarding the force acting between the blade and semiconductor wafer during cutting is limited to the component in the direction perpendicular to the top surface of the chucking device. Furthermore, with the technology of Patent Document 1, the difference in the force depending on the location in the direction along the top surface of the chucking device can only be obtained with a resolution corresponding to the area of ​​the cell of the voltage element. With such limited information on the direction and resolution of the force, it may be difficult to accurately determine the type of force acting on the blade and the workpiece during cutting. [Means for solving the problem]

[0005] In order to solve the above-mentioned problems, a cutting device of the present invention includes a base, a first table fixed to the base and having a first mounting surface on which a cutting object can be placed, a second table fixed to the base, located on the same plane as the first mounting surface, having a second mounting surface on which the cutting object can be placed, and aligned with the first table in a direction along a first axis parallel to the first mounting surface, a cutting blade reciprocating along a second axis perpendicular to the first mounting surface and capable of cutting the cutting object, and a cutting blade located between the first table and the base and adapted to cut the first table. a first dynamometer capable of detecting the magnitude of a force acting on the table in a direction along the first axis and the magnitude of a force acting on the table in a direction along the second axis; a second dynamometer located between the second table and the base and capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and the magnitude of a force acting on the table in a direction along the second axis; and a processing device that acquires the detection results of the first dynamometer and the second dynamometer, and when viewed in a direction along the second axis, both the first mounting surface and the second mounting surface are located within a range in which the cutting edge of the cutting blade is present.

[0006] In order to solve the above-mentioned problems, a cutting device of the present invention includes a base, a first table fixed to the base and having a first mounting surface on which a cutting object can be placed, a second table fixed to the base, located on the same plane as the first mounting surface, having a second mounting surface on which the cutting object can be placed, and aligned with the first table in a direction along a first axis parallel to the first mounting surface, a cutting blade reciprocating along a second axis perpendicular to the first mounting surface and capable of cutting the cutting object, and a cutting blade positioned between the first table and the base and acting on the first table. The cutting device is equipped with a first dynamometer capable of detecting the magnitude of a force in a direction along the axis and the magnitude of a force in a direction along the second axis, a second dynamometer located between the second table and the base and capable of detecting the magnitude of a force in a direction along the first axis and the magnitude of a force acting on the second table in a direction along the second axis, and a processing device that acquires the detection results of the first dynamometer and the second dynamometer, and when viewed in a direction along the second axis, the entire cutting edge of the cutting blade is located on the boundary line between the first and second mounting surfaces or in the gap between the first and second mounting surfaces. [Effects of the Invention]

[0007] According to the present invention, more accurate information can be obtained regarding the force acting between the cutting blade and the object to be cut. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of a cutting device according to a first embodiment. [Figure 2] FIG. 2 is a plan view of the cutting device of the first embodiment. [Figure 3] FIG. 3 is a plan view of the cutting device of the second embodiment. [Figure 4] FIG. 4 is a plan view of a cutting device according to a modified example. [Figure 5] FIG. 5 is a plan view of a cutting device according to a modified example. [Figure 6] FIG. 6 is a plan view of a cutting device according to a modified example. [Figure 7] FIG. 7 is a plan view of a cutting device according to a modified example. [Figure 8] FIG. 8 is a schematic diagram showing a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0009] First Embodiment A first embodiment of a cutting device will be described. The drawings may show components enlarged for ease of understanding. The dimensional ratios of the components may differ from those in the actual drawings or from those in other drawings. Furthermore, in this specification, when describing a specific component collectively, the reference numeral may be omitted.

[0010] 1, the cutting device 10 includes a base 15. The base 15 is in the form of a rectangular plate. For example, the base 15 is fixed onto the floor or a table of a laboratory facility for designing a cutting blade 83, which will be described later.

[0011] The cutting device 10 includes a first dynamometer 71. The first dynamometer 71 is fixed to the main surface of the base 15. The main surface is the plane with the largest area among the planes constituting the outer surface of the plate-like object. The first dynamometer 71 is rectangular parallelepiped. The length and width of the surface of the first dynamometer 71 facing the main surface of the base 15 are smaller than the length and width of the main surface of the base 15.

[0012] The cutting device 10 includes a first table 21. The first table 21 is fixed to a surface of the first dynamometer 71 opposite the base 15. That is, the first table 21 is fixed to the base 15 via the first dynamometer 71. The area of ​​the outer surface of the first table 21 facing the first dynamometer 71 is larger than the area of ​​the surface of the first dynamometer 71 facing the first table 21. As shown in FIG. 2, when the first table 21 is viewed from the side opposite the first dynamometer 71, the first dynamometer 71 is located within the range of the first table 21. As shown in FIG. 1, the outer surface of the first table 21 facing the side opposite the first dynamometer 71 is a flat first placement surface 21A. That is, the first table 21 includes the first placement surface 21A on which the cutting target N can be placed. The shape of the first table 21 will be described in detail below. For example, the first table 21 is made of a metal. Although not shown in the drawings, the first table 21 has a suction function for the cutting object N. Specifically, the first table 21 has a plurality of suction holes that open on the first placement surface 21A. The first table 21 can hold the cutting object N on the first placement surface 21A by sucking in gas through these suction holes.

[0013] Hereinafter, a virtual axis extending in a specific direction parallel to the first placement surface 21A will be referred to as the first axis X. A virtual axis perpendicular to the first placement surface 21A will be referred to as the second axis Y. A virtual axis perpendicular to both the first axis X and the second axis Y will be referred to as the third axis Z. One of the directions along the first axis X will be referred to as the first positive direction X1, and the direction opposite to the first positive direction X1 will be referred to as the first negative direction X2. Similarly, one of the directions along the third axis Z will be referred to as the third positive direction Z1, and the direction opposite to the third positive direction Z1 will be referred to as the third negative direction Z2. Among the directions along the second axis Y, the direction toward which the first placement surface 21A faces will be referred to as the upward direction Y1, and the direction opposite to the upward direction Y1 will be referred to as the downward direction Y2. Note that the terms "upper" and "lower" used here are for convenience's sake. Therefore, the upward direction Y1 and the downward direction Y2 do not necessarily have to coincide with the upward and downward directions relative to the direction of gravity.

[0014] Due to the positional relationship between the first table 21, the first dynamometer 71, and the base 15 described above, the first dynamometer 71 is located between the first table 21 and the base 15. The first dynamometer 71 detects the magnitude of a force acting on the first table 21 in a direction along the first axis X, a direction along the second axis Y, and a direction along the third axis Z. The first dynamometer 71 transmits a signal corresponding to the information detected by itself to a processing device 90, which will be described later.

[0015] The cutting device 10 includes a second dynamometer 72. The second dynamometer 72 is fixed to the main surface of the base 15. The second dynamometer 72 is aligned with the first dynamometer 71 in the direction along the first axis X. Specifically, the second dynamometer 72 is located on the first negative direction X2 side relative to the first dynamometer 71. The shape and dimensions of the second dynamometer 72 are the same as those of the first dynamometer 71. That is, the second dynamometer 72 is rectangular parallelepiped. The length and width of the surface of the second dynamometer 72 facing the main surface of the base 15 are smaller than the length and width of the main surface of the base 15. The thickness of the second dynamometer 72 is the same as that of the first dynamometer 71.

[0016] The cutting device 10 includes a second table 22. The second table 22 is fixed to the surface of the second dynamometer 72 opposite the base 15. That is, the second table 22 is fixed to the base 15 via the second dynamometer 72. In relation to the positional relationship between the first dynamometer 71 and the second dynamometer 72, the second table 22 is located on the first negative direction X2 side with respect to the first table 21. The second table 22 basically has the same configuration as the first table 21, but its orientation is different from that of the first table 21. As shown in FIG. 2, when the second table 22 is viewed from the side opposite the second dynamometer 72, the second dynamometer 72 is located within the range of the second table 22. Furthermore, as shown in FIG. 1, the outer surface of the second table 22 facing away from the second dynamometer 72 is a flat second placement surface 22A. Similar to the first placement surface 21A, the object N to be cut can be placed on the second placement surface 22A. The second placement surface 22A is located on an imaginary plane including the first placement surface A. The second table 22, like the first table , has a suction function for the object N to be cut.

[0017] Due to the positional relationship between the second table 22, the second dynamometer 72, and the base 15 described above, the second dynamometer 72 is located between the second table 22 and the base 15. The second dynamometer 72 detects the magnitude of a force acting on the second table 22 in a direction along the first axis X, a direction along the second axis Y, and a direction along the third axis Z. The second dynamometer 72 transmits a signal corresponding to the information detected by itself to a processing device 90, which will be described later. The first table 21, the second table 22, the first dynamometer 71, and the second dynamometer 72 described above constitute a set of detection mechanism 11.

[0018] The cutting device 10 includes a cutting block 82, a cutting blade 83, and a vertical movement mechanism 84. The cutting block 82 is located on the upward direction Y1 side relative to the first mounting surface 21A and the second mounting surface 22A. The cutting block 82 has a rectangular parallelepiped shape. The cutting block 82 holds the cutting blade 83.

[0019] The cutting blade 83 has a rectangular plate shape. A portion of the cutting blade 83 protrudes downward in the Y2 direction from the lower surface of the cutting block 82. The lower end of the cutting blade 83 forms a cutting edge 83A. That is, the cutting edge 83A faces downward in the Y2 direction.

[0020] The vertical movement mechanism 84 supports the cutting block 82 and the cutting blade 83 so that they can move back and forth in the direction along the second axis Y. Although detailed illustration is omitted, the vertical movement mechanism 84 is composed of, for example, an eccentric cam and an electric motor that rotates the eccentric cam.

[0021] <Details of Table 1 and Table 2> 1 and 2, the first table 21 includes a main portion 51 and a protruding portion 52. For convenience, the protruding portion 52 is indicated by a dot in Fig. 1 and 2. Note that the main portion 51 and the protruding portion 52 are integrally molded, and there is no boundary between them in reality.

[0022] The main portion 51 has a rectangular parallelepiped shape. One of the sides of the main portion 51, the vertical side, extends along the third axis Z. The short side of the main portion 51, which is a side perpendicular to the vertical side, extends along the first axis X. In other words, the three mutually perpendicular sides of the main portion 51 extend along the first axis X, the second axis Y, and the third axis Z. The vertical side is longer than the horizontal side. For example, the dimension of the vertical side is about 10 centimeters.

[0023] The protrusion 52 is aligned with the main portion 51 in the direction along the first axis X. Specifically, the protrusion 52 is located on the first negative direction X2 side relative to the main portion 51. The protrusion 52 has a rectangular parallelepiped shape. Similar to the main portion 51, the three mutually perpendicular sides of the protrusion 52 extend along the first axis X, the second axis Y, and the third axis Z. The dimension of the protrusion 52 in the direction along the first axis X is smaller than the dimension of the main portion 51 in the direction along the first axis X. The dimension of the protrusion 52 in the direction along the second axis Y is the same as the dimension of the main portion 51 in the direction along the second axis Y. The upper surface of the protrusion 52 is flush with the upper surface of the main portion 51. A flat surface formed by the upper surfaces of the protrusion 52 and the main portion 51 constitutes the first mounting surface 21A. Since the upper surface of the protruding portion 52 and the upper surface of the main portion 51 are flush with each other, the lower surface of the protruding portion 52 is also flush with the lower surface of the main portion 51 .

[0024] As shown in FIG. 2, the dimension of the protrusion 52 in the direction along the third axis Z is slightly shorter than half the dimension of the main portion 51 in the direction along the third axis Z. With respect to the direction along the third axis Z, the end of the protrusion 52 on the third negative direction Z2 side is located at the same position as the end of the main portion 51 on the third negative direction Z2 side. That is, the end face of the protrusion 52 on the third negative direction Z2 side is flush with the end face of the main portion 51 on the third negative direction Z2 side. As a result, the protrusion 52 is located closer to the third negative direction Z2 side than the center of the main portion 51 in the direction along the third axis Z. When the first table 21 is viewed in the direction along the second axis Y, the first placement surface 21A is L-shaped.

[0025] The second table 22 has the same shape and dimensions as the first table 21. That is, the second table 22 is composed of a main portion 61 and a protruding portion 62 similar to those of the first table 21. As with the first table 21, the protruding portion 62 is denoted by a dot in FIGS. 1 and 2 for convenience. As with the first table 21, the main portion 61 of the second table 22 has three mutually perpendicular sides extending along the first axis X, the second axis Y, and the third axis Z, and the main portion 61 and the protruding portion 62 are aligned in a direction along the first axis X. The flat surface formed by the upper surfaces of the main portion 61 and the protruding portions 62 constitutes a second placement surface 22A. Note that, in the second table 22, the protruding portion 62 is located on the first positive direction X1 side relative to the main portion 61. At the same time, the protrusion 62 is located closer to the third positive direction Z1 than the center of the main portion 61 in the direction along the third axis Z. That is, as shown in Fig. 2, the second table 22 is disposed so that the second placement surface 22A is in a positional relationship that is two-fold symmetric with respect to the first placement surface 21A when the cutting device 10 is viewed in the direction along the second axis Y. The protrusion 62 of the second table 22 faces the protrusion 52 of the first table 21 in the direction along the third axis Z.

[0026] The arrangement of the first table 21 and the second table 22 will be described in detail. When viewing the cutting device 10 in a direction along the second axis Y, an imaginary line is assumed to pass through the center of rotation C of the two-fold symmetry and to be parallel to the third axis Z. This imaginary line is referred to as the reference line J. When viewing the cutting device 10 in a direction along the second axis Y, the protrusion 52 of the first table 21 and the protrusion 62 of the second table 22 are located on this reference line J. In other words, when viewing the cutting device 10 in a direction along the second axis Y, the first placement surface 21A and the second placement surface 22A are located on the reference line J. Here, the end face of the first table 21 on the third positive direction Z1 side and the end face of the second table 22 on the third positive direction Z1 side are located at the same position in the direction along the third axis Z. Furthermore, the end face of the first table 21 facing the third negative direction Z2 and the end face of the second table 22 facing the third negative direction Z2 are located at the same position in the direction along the third axis Z. Due to the dimensional relationship between the main portion and the protruding portion, a gap is present in the direction along the third axis Z between the protruding portion 52 of the first table 21 and the protruding portion 62 of the second table 22. For example, the dimension of the gap is on the order of several millimeters. In FIG. 2, the gap is exaggerated and shown larger to make it easier to understand. Furthermore, in the direction along the first axis X, the protruding portion 52 of the first table 21 faces a portion of the main portion 61 of the second table 22 where the protruding portion 62 of the second table 22 is not present in the direction along the third axis Z. Furthermore, in the direction along the first axis X, the protruding portion 62 of the second table 22 faces a portion of the main portion 51 of the first table 21 where the protruding portion 52 of the first table 21 is not present in the direction along the third axis Z. There is a gap between the first table 21 and the second table 22 at each position in the direction along the third axis Z. Since the first table 21 and the second table 22 have the same dimensions, the thickness of the first table 21 and the thickness of the second table 22 in the direction along the second axis Y are the same. As a result, the first mounting surface 21A of the first table 21 and the second mounting surface 22A of the second table 22 are located on the same plane.

[0027] <Cutting blade arrangement> The arrangement of the cutting blade 83 will be described in detail. As shown in FIG. 2, the cutting edge 83A of the cutting blade 83 extends in a direction along the third axis Z. In FIG. 2, the position where the cutting edge 83A of the cutting blade 83 is located when the cutting device 10 is viewed in a direction along the second axis Y is indicated by an imaginary dotted square. The dimension of the cutting edge 83A in the direction along the third axis Z is slightly larger than the dimension of the first table 21 in the direction along the third axis Z. As shown in FIG. 2, when the cutting device 10 is viewed in a direction along the second axis Y, the cutting edge 83A extends on the reference line J along the third axis Z and passes through the rotation center C of the two-fold symmetry. In addition, when the cutting device 10 is viewed in a direction along the second axis Y, the cutting edge 83A straddles the protrusion 52 of the first table 21 and the protrusion 62 of the second table 22. The end of the cutting edge 83A on the third positive direction Z1 side extends further in the third positive direction Z1 than the end of the protrusion 62 of the second table 22 on the third positive direction Z1 side. The end of the cutting edge 83A on the third negative direction Z2 side extends further in the third negative direction Z2 than the end of the protrusion 52 of the first table 21 on the third negative direction Z2 side. Thus, when the cutting device 10 is viewed facing the second axis Y, both the portion of the first placement surface 21A formed by the protrusion 52 of the first table 21 and the portion of the second placement surface 22A formed by the protrusion 62 of the second table 22 are located within the range where the cutting edge 83A exists.

[0028] <Control configuration> As shown in FIG. 1, the cutting device 10 includes a processing device 90. The processing device 90 includes a memory unit 92, a processing circuit 91, and other peripheral circuits. Note that the peripheral circuits are not shown in FIG. 1. The memory unit 92 is composed of a non-volatile readable / writable storage, a non-volatile read-only ROM, a volatile RAM, and the like. The memory unit 92 pre-stores a program for controlling the reciprocating motion of the cutting blade 83, a program for analyzing information obtained from the first dynamometer 71 and the second dynamometer 72, and related data related to the execution of these programs. The processing circuit 91 executes the program stored in the memory unit 92. The other peripheral circuits include, for example, a clock circuit and a power supply circuit.

[0029] The processing device 90 controls the vertical movement mechanism 84. The processing device 90 controls the vertical movement mechanism 84 to move the cutting blade 83 up and down together with the cutting block 82. As shown in FIG. 2 , before moving the cutting blade 83 up and down, the cutting object N is placed on the first mounting surface 21A and the second mounting surface 22A. An example of the cutting object N is a so-called green sheet primarily composed of ceramic powder and a binder. The green sheet is an intermediate product produced during the manufacturing process of electronic components such as ceramic capacitors. The thickness of the green sheet is, for example, 0.1 millimeters or less. In this embodiment, the cutting object N is square. When viewing the cutting device 10 in a direction along the second axis Y, the cutting object N is placed so as to straddle the portion of the first mounting surface 21A formed by the protrusion 52 of the first table 21 and the portion of the second mounting surface 22A formed by the protrusion 62 of the second table 22. For example, when viewing the cutting device 10 in a direction along the second axis Y, the geometric center of the object N to be cut substantially coincides with the rotation center C of the two-fold symmetry associated with the arrangement of the first table 21 and the second table 22. With this arrangement, the processing device 90 moves the cutting blade 83 up and down, as indicated by the arrow V in FIG. 1 . Specifically, the processing device 90 moves the cutting blade 83 downward from the initial position to the cutting position, and then moves the cutting blade 83 upward from the cutting position to the initial position. The initial position is a position where the cutting edge 83A of the cutting blade 83 is spaced apart from the object N in the upward direction Y1. The cutting position is a position where the cutting edge 83A of the cutting blade 83 contacts the first mounting surface 21A and the second mounting surface 22A. When the cutting blade 83 reaches the cutting position, the object N placed on the first mounting surface 21A and the second mounting surface 22A is cut by the cutting edge 83A of the cutting blade 83.

[0030] The processing device 90 is capable of communicating with the first dynamometer 71. The processing device 90 receives a detection signal from the first dynamometer 71 while the cutting blade 83 reciprocates between the initial position and the cutting position. That is, the processing device 90 acquires the detection results of the first dynamometer 71 in time series. The processing device 90 is also capable of communicating with the second dynamometer 72. The processing device 90 receives a detection signal from the second dynamometer 72 while the cutting blade 83 reciprocates between the initial position and the cutting position. That is, the processing device 90 acquires the detection results of the second dynamometer 72 in time series.

[0031] <Effects of the first embodiment> (1) In this embodiment, the first table 21 and the second table 22 are separate and not directly fixed to or in contact with each other. Therefore, when the object N is placed across the first table 21 and the second table 22 and cut, different forces acting on the first table 21 and the second table 22 follow the movement of the object N. The first dynamometer 71 and the second dynamometer 72 detect the magnitude of these different forces for each table. With this configuration, it is possible to individually capture the forces acting on the two portions of the object N to be cut. By individually capturing the forces acting on the two portions to be cut, more accurate information can be obtained about the forces acting on the cutting blade 83 and the object N to be cut. This information is extremely useful, for example, in designing the cutting edge 83A to reduce resistance during cutting.

[0032] (2) There is a gap between the first table 21 and the second table 22. Therefore, even if a force acts on the first table 21 and the second table 22 when the cutting blade 83 cuts the cutting object N, the force is not transmitted between the first table 21 and the second table 22. In other words, in this embodiment, even if one of the tables moves slightly as the cutting object N is cut, the tables 21 and 22 do not come into contact with each other, so no force is applied to the other table. This configuration increases the accuracy of detecting the individual forces acting on the tables 21 and 22.

[0033] (3) In this embodiment, the first dynamometer 71 detects three-dimensional components of the force acting on the first table 21. Therefore, in this embodiment, three-dimensional information can be obtained regarding the force acting between the cutting blade 83 and the object N to be cut. This is also true for the second dynamometer 72.

[0034] (4) In this embodiment, the first table 21 and the second table 22 are configured to be equal on the left and right. In this case, if the same force acts on the first table 21 and the second table 22, the magnitude of the frictional force and other factors associated with the movement of each table 21, 22 will be approximately the same for the first table 21 and the second table 22. As a result, the amount of movement of the first table 21 and the second table 22 will be approximately the same. With this design, approximately the same detection results can be obtained for the same force for each table 21, 22, thereby suppressing detection errors in the force acting on each table 21, 22.

[0035] Furthermore, in this embodiment, the first mounting surface 21A and the second mounting surface 22A are aligned in a direction along the third axis Z, and the cutting edge 83A of the cutting blade 83 extends so as to straddle these first mounting surface 21A and second mounting surface 22A. In this case, when the cutting blade 83 cuts the object N, if a force in the direction along the third axis Z acts on the first mounting surface 21A and the second mounting surface 22A, this force is likely to be reflected in the movement of each mounting surface 21A, 22A and, ultimately, each table 21, 22. Therefore, in this embodiment, it is easy to detect the movement of each table 21, 22 in the direction along the third axis Z. In this embodiment, three-dimensional information regarding the force acting between the cutting blade 83 and the object N can be accurately obtained.

[0036] Second Embodiment A second embodiment of the cutting device will be described with reference to FIG. 3. The cutting device of the second embodiment differs from the first embodiment in that it is equipped with two detection mechanisms. The following mainly describes the differences from the first embodiment, and descriptions of the same parts as the first embodiment will be omitted or omitted as appropriate. In FIG. 3, parts that are the same as or function substantially the same as those in the first embodiment are designated by the same reference numerals as those in FIGS. 1 and 2.

[0037] As shown in FIG. 3 , the cutting device 110 includes a base 15, a first detection mechanism 111, and a second detection mechanism 112. The first detection mechanism 111 is configured using the detection mechanism described in the first embodiment. That is, the first detection mechanism 111 includes a first table 21, a second table 22, a first dynamometer 71, and a second dynamometer 72. As described in the first embodiment, the first table 21 and the second table 22 have the same shape and dimensions and are arranged such that the first placement surface 21A and the second placement surface 22A are in a two-fold symmetrical positional relationship when the cutting device 110 is viewed in the direction along the second axis Y. The second detection mechanism 112 is also configured using the detection mechanism described in the first embodiment. In this way, the cutting device 110 includes two detection mechanisms. The first detection mechanism 111 and the second detection mechanism 112 are fixed to the main surface of the common base 15.

[0038] The first detection mechanism 111 and the second detection mechanism 112 are aligned in the direction along the third axis Z. Specifically, the second detection mechanism 112 is disposed at a position obtained by translating the first detection mechanism 111 in the third negative direction Z2. A first reference line J1, which is the reference line of the first detection mechanism 111, and a second reference line J2, which is the reference line of the second detection mechanism 112, are coincident. At the same time, the following components face each other in the direction along the third axis Z. That is, the main portion 51 of the first table 21 of the first detection mechanism 111 faces the main portion 51 of the first table 21 of the second detection mechanism 112. Furthermore, the main portion 61 of the second table 22 of the first detection mechanism 111 faces the main portion 61 of the second table 22 of the second detection mechanism 112. Furthermore, the protrusion 52 of the first table 21 of the first detection mechanism 111 and the protrusion 62 of the second table 22 of the second detection mechanism 112 face each other. There is a gap of, for example, several millimeters between these parts that face each other in the direction along the third axis Z. Note that in Figure 3, the gap is exaggerated to make it easier to understand.

[0039] Similar to the first embodiment, the cutting device 110 includes a vertical movement mechanism, a cutting block, and a cutting blade 83. In FIG. 3 , the vertical movement mechanism and the cutting block are omitted, and the position of the cutting edge 83A of the cutting blade 83 when the cutting device 110 is viewed in a direction along the second axis Y is indicated by a virtual dotted square. As shown in FIG. 3 , the cutting edge 83A extends in a direction along the third axis Z. The dimension of the cutting edge 83A in the direction along the third axis Z is more than twice the dimension of the first table 21 in the direction along the third axis Z. When the cutting device 110 is viewed in a direction along the second axis Y, the cutting edge 83A extends along the first reference line J1 and the third axis Z, and passes through both the dyad-symmetric rotation center C1 of the first detection mechanism 111 and the dyad-symmetric rotation center C2 of the second detection mechanism 112. When the cutting device 110 is viewed in a direction along the second axis Y, the cutting edge 83A straddles the protrusion 52 of the first table 21 and the protrusion 62 of the second table 22 in the first detection mechanism 111, and the protrusion 52 of the first table 21 and the protrusion 62 of the second table 22 in the second detection mechanism 112. The end of the cutting edge 83A on the third positive direction Z1 side extends further in the third positive direction Z1 than the end of the first detection mechanism 111 on the third positive direction Z1 side. The end of the cutting edge 83A on the third negative direction Z2 side extends further in the third negative direction Z2 than the end of the second detection mechanism 112 on the third negative direction Z2 side. That is, when the cutting device 110 is viewed in a direction along the second axis Y, the protrusions 52, 62 of the tables 21, 22 of the first detection mechanism 111 and the protrusions 52, 62 of the tables 21, 22 of the second detection mechanism 112 are located within a range in which the cutting edge 83A is present. In other words, when the cutting device 110 is viewed in a direction along the second axis Y, the first placement surfaces 21A and the second placement surfaces 22A of the two detection mechanisms 111, 112 are located within a range in which the cutting edge 83A is present.

[0040] The cutting device 110 includes a processing device 90 similar to that of the first embodiment. That is, the processing device 90 controls the vertical movement mechanism to move the cutting blade 83 up and down. The processing device 90 is capable of communicating with the first dynamometer 71 and the second dynamometer 72 of the first detection mechanism 111, and is also capable of communicating with the first dynamometer 71 and the second dynamometer 72 of the second detection mechanism 112. In the second embodiment, when the cutting device 110 is viewed in a direction along the second axis Y, the object N to be cut is placed so as to straddle the protrusions 52 and 62 of the tables 21 and 22 of the first detection mechanism 111 and the protrusions 52 and 62 of the tables 21 and 22 of the second detection mechanism 112. For example, when the cutting device 110 is viewed in a direction along the second axis Y, the geometric center of the object N to be cut substantially coincides with the following specific position U. The specific position U is a center position between the first detection mechanism 111 and the second detection mechanism 112 on the first reference line J1.

[0041] When the cutting blade 83 is reciprocated, the processing device 90 acquires the detection results of the first dynamometer 71 and the second dynamometer 72 in the first detection mechanism 111 in chronological order, and also acquires the detection results of the first dynamometer 71 and the second dynamometer 72 in the second detection mechanism 112 in chronological order.

[0042] <Effects of the second embodiment> In the second embodiment, in addition to the advantages (1), (2), (3), and (4) above for each of the two detection mechanisms 111 and 112, the following advantage can also be achieved.

[0043] That is, in the second embodiment, when the cutting device 110 is viewed in a direction along the second axis Y, four tables are arranged with the specific position U as the center. The second embodiment can detect the magnitude of the force acting on each of these four tables. In this case, for example, the magnitude of the force in the third negative direction Z2 detected by the first dynamometer 71 of the first detection mechanism 111, the magnitude of the force in the first negative direction X2 detected by the first dynamometer 71 of the second detection mechanism 112, the magnitude of the force in the third positive direction Z1 detected by the second dynamometer 72 of the second detection mechanism 112, and the magnitude of the force in the first positive direction X1 detected by the second dynamometer 72 of the first detection mechanism 111 can be combined for analysis. This allows the second embodiment to grasp the circumferential component of the force acting on the cutting blade 83 and the object N to be cut, centered on the specific position U.

[0044] <Example of change> The above-described embodiments can be modified as follows: The above-described embodiments and the following modifications can be combined with each other to the extent that no technical contradiction occurs.

[0045] The cutting object N is not limited to the examples in the above embodiments. The type, shape, dimensions, etc. of the cutting object N can be changed as appropriate. In the second embodiment, the positional relationship between the cutting edge 83A and the two detection mechanisms 111, 112 is not limited to the example described above. When the cutting device 110 is viewed in a direction along the second axis Y, the first mounting surface 21A and the second mounting surface 22A of each of the two detection mechanisms 111, 112 may be located within the range where the cutting edge 83A is present.

[0046] The positional relationship between the first detection mechanism 111 and the second detection mechanism 112 is not limited to the example in the second embodiment. That is, it is not essential that the second detection mechanism 112 be disposed at a position obtained by translating the first detection mechanism 111 in a direction along the third axis Z. For example, when the cutting device 110 is viewed in a direction along the second axis Y, the first reference line J1 of the first detection mechanism 111 and the second reference line J2 of the second detection mechanism 112 may be misaligned or intersect with each other. It is sufficient that the first detection mechanism 111 and the second detection mechanism 112 are aligned in a direction along the third axis Z.

[0047] The gap between the first detection mechanism 111 and the second detection mechanism 112 may be eliminated. However, to obtain accurate detection results, it is preferable to provide a gap between the first detection mechanism 111 and the second detection mechanism 112.

[0048] The first detection mechanism 111 and the second detection mechanism 112 may have different configurations. That is, the shapes or arrangements of the tables in the two detection mechanisms may be different. The cutting device may have three or more sets of detection mechanisms.

[0049] Regardless of the number of detection mechanisms provided in the cutting device, the shapes of the first and second tables for one set of detection mechanisms are not limited to those in the above-described embodiments, and the arrangement of the first and second tables is not limited to those in the above-described embodiments.

[0050] For example, the first table and the second table may have the shape shown in the cutting device 210 in Fig. 4. In this cutting device 210, the first table 221 constituting the detection mechanism 211 includes a main portion 251 and a plurality of protrusions 252. For convenience, the protrusions 252 are indicated by dots in Fig. 4. The main portion 251 has a rectangular parallelepiped shape. Similar to the main portion in the first embodiment, three mutually orthogonal sides of the main portion 251 extend along the first axis X, the second axis Y, and the third axis Z.

[0051] The multiple protrusions 252 are located on the first negative direction X2 side with respect to the main portion 251. The multiple protrusions 252 are aligned at equal intervals in a direction along the third axis Z. The number of protrusions 252 is, for example, three. Each protrusion 252 is shaped like a rectangular parallelepiped. Like the main portion 251, the three mutually perpendicular sides of each protrusion 252 extend along the first axis X, the second axis Y, and the third axis Z. The upper surfaces of each protrusion 252 and the upper surface of the main portion 251 form a flush first mounting surface 221A.

[0052] The second table 222 has the same shape and dimensions as the first table 221. That is, like the first table 221, the second table 222 is composed of a main portion 261 and multiple protrusions 262. As with the first table 221, the protrusions 262 are denoted by dots in FIG. 4 for convenience. The upper surface of the main portion 261 of the second table 222 and the upper surfaces of the protrusions 262 form a flush second placement surface 222A. When the cutting device 210 is viewed in a direction along the second axis Y, the second table 222 is disposed such that the second placement surface 222A is in a two-fold symmetric positional relationship with the first placement surface 221A. That is, the multiple protrusions 262 of the second table 222 are located on the first positive direction X1 side with respect to the main portion 261 of the second table 222. Each protrusion 262 of the second table 222 is located between multiple protrusions 252 of the first table 221 that are aligned in the direction along the third axis Z. That is, the multiple protrusions 252 of the first table 221 and the multiple protrusions 262 of the second table 222 are aligned alternately in the direction along the third axis Z. Note that there is a gap between adjacent protrusions 252, 262 in the direction along the third axis Z. Here, when viewing the cutting device 210 in the direction along the second axis Y, a virtual line that passes through the dyad-symmetric rotation center C3 and is parallel to the third axis Z is referred to as a third reference line J3. When viewing the cutting device 210 in the direction along the second axis Y, the multiple protrusions 252 of the first table 221 and the multiple protrusions 262 of the second table 222 are located on this third reference line J3.

[0053] As described above, the multiple protrusions 252 of the first table 221 and the multiple protrusions 262 of the second table 222 are arranged alternately in the direction along the third axis Z. Due to this arrangement, the multiple protrusions 252 of the first table 221 and the portions of the main portion 261 of the second table 222 where the protrusions 262 of the second table 222 are not present in the direction along the third axis Z face each other in the direction along the first axis X. Furthermore, the multiple protrusions 262 of the second table 222 and the portions of the main portion 251 of the first table 221 where the protrusions 252 of the first table 221 are not present in the direction along the third axis Z face each other in the direction along the first axis X. There is a gap between the first table 221 and the second table 222 at each position in the direction along the third axis Z.

[0054] When the detection mechanism 211 shown in FIG. 4 is employed, it is preferable to arrange the cutting blade 83 as follows. In FIG. 4, the position of the cutting edge 83A of the cutting blade 83 when the cutting device 210 is viewed in a direction along the second axis Y is indicated by an imaginary dotted square. When the cutting device 210 is viewed in a direction along the second axis Y, the cutting edge 83A extends on the third reference line J3 along the third axis Z and passes through the dyad-symmetric rotation center C3 of the first table 221 and the second table 222. In addition, when the cutting device 210 is viewed in a direction along the second axis Y, the cutting edge 83A straddles the multiple protrusions 252 of the first table 221 and the multiple protrusions 262 of the second table 222. In other words, when the cutting device 210 is viewed in a direction along the second axis Y, both a portion of the first mounting surface 221A formed by the multiple protrusions 252 of the first table 221 and a portion of the second mounting surface 222A formed by the multiple protrusions 262 of the second table 222 are present within the range where the cutting edge 83A exists. In FIG. 4, parts that function the same as or substantially the same as those in the first embodiment are denoted by the same reference numerals as in FIGS. 1 and 2. Also, while the modified shapes of the first and second tables have been described above using as an example a case where only one detection mechanism 211 is provided, two sets of detection mechanisms 211 shown in FIG. 4 may be arranged in a direction along the third axis Z.

[0055] Adopting the first table 221 and second table 222 shown in FIG. 4 not only provides the effects (1), (2), (3), and (4) described above, but also provides the following advantage. For example, if the protrusions 52 are provided only on the main portion 51 closer to the third negative direction Z2, as in the first table 21 of the first embodiment, the weight balance of the first table 21 may be slightly unbalanced in the direction along the third axis Z. In contrast, if multiple protrusions 252 are arranged in the direction along the third axis Z, as in the first table 221 shown in FIG. 4, the weight balance of the first table 221 in the direction along the third axis Z becomes more uniform. This makes it less likely that the amount of movement of the first table 221 in response to a force acting on it will be unbalanced due to the weight balance. Therefore, the force acting on the first table 221 can be detected with high accuracy. The same applies to the second table 222.

[0056] The first table and the second table may have the shape shown in the cutting device 310 of FIG. 5. In this cutting device 310, the first table 321 constituting the detection mechanism 311 has a trapezoidal shape when viewed in the direction along the second axis Y. That is, the first placement surface 321A is trapezoidal. The second table 322 has the same shape and dimensions as the first table 321. That is, when the second table 322 is viewed in the direction along the second axis Y, the shape of the second table 322 and therefore the second placement surface 322A is trapezoidal. The first table 321 and the second table 322 are arranged such that the first placement surface 321A and the second placement surface 322A have a two-fold symmetric positional relationship when the cutting device 310 is viewed in the direction along the second axis Y. Specifically, when the cutting device 310 is viewed in a direction along the second axis Y, the oblique side 321L of the trapezoid of the first placing surface 321A and the oblique side 322L of the trapezoid of the second placing surface 322A face each other with a gap in between in a direction along the first axis X. When the cutting device 310 is viewed in a direction along the second axis Y, a part of the first placing surface 321A and a part of the second placing surface 322A are located on a fourth reference line J4, which is an imaginary line that passes through the two-fold symmetric rotation center C4 and is parallel to the third axis Z.

[0057] When the detection mechanism 311 shown in FIG. 5 is employed, the cutting blade 83 is preferably disposed as follows. In FIG. 5, the position of the cutting edge 83A of the cutting blade 83 when the cutting device 310 is viewed in a direction along the second axis Y is indicated by an imaginary dotted square. When the cutting device 310 is viewed in a direction along the second axis Y, the cutting edge 83A extends on the fourth reference line J4 along the third axis Z and passes through the dyad-symmetric rotation center C4 of the first table 321 and the second table 322. Furthermore, when the cutting device 310 is viewed in a direction along the second axis Y, the cutting edge 83A straddles the first placement surface 321A and the second placement surface 322A. Note that in FIG. 5, parts that function the same as or substantially the same as those in the first embodiment are designated by the same reference numerals as those in FIGS. 1 and 2. Furthermore, here, examples of modifications to the shapes of the first table and the second table have been described using an example in which only one set of detection mechanisms 311 is provided, but two sets of detection mechanisms 311 shown in Figure 5 may also be arranged in a direction along the third axis Z.

[0058] When the first table 321 and second table 322 shown in Fig. 5 are employed, in addition to the effects (1), (2), (3), and (4) described above, the following advantage is also obtained. That is, in the configuration shown in Fig. 5, the surface of first table 321 facing second table 322 does not have a stepped portion like, for example, first table 21 in Fig. 1, and is flush over its entire area. With this configuration, first table 321 is easy to manufacture. The same is true for second table 322.

[0059] Regarding the shapes of the first and second tables, their outer surfaces may not be linear and may be curved when viewed in the direction along the second axis Y. For example, in the cutting device 410 shown in FIG. 6, the surface of the first table 421 constituting the detection mechanism 411 that faces the second table 422 is curved. Similarly, the surface of the second table 422 that faces the first table 421 is curved. The first table 421 and the second table 422 are configured to have the same shape and dimensions. As in the other modified examples described above, the first table 421 and the second table 422 are arranged such that the first placement surface 421A and the second placement surface 422A have a two-fold symmetric positional relationship when the cutting device 410 is viewed in the direction along the second axis Y. When the cutting device 410 is viewed in a direction along the second axis Y, a portion of the first placement surface 421A and a portion of the second placement surface 422A are located on a fifth reference line J5, which is an imaginary line that passes through the 2-fold symmetric rotation center C5 and is parallel to the third axis Z. As indicated by the dotted square in Fig. 6, when the cutting device 410 is viewed in a direction along the second axis Y, the cutting edge 83A of the cutting blade 83 extends on the fifth reference line J5 along the third axis Z and passes through the 2-fold symmetric rotation center C5 of the first table 421 and the second table 422. In Fig. 6, parts that function the same as or substantially the same as those in the first embodiment are denoted by the same reference lines as those in Figs. 1 and 2. Furthermore, here, examples of modifications to the shapes of the first table and the second table have been described using an example in which only one set of detection mechanisms 411 is provided, but two sets of detection mechanisms 411 shown in Figure 6 may also be arranged in a direction along the third axis Z.

[0060] Regardless of the number of detection mechanisms provided in the cutting device, it is not essential that the arrangement of the first and second tables for one set of detection mechanisms satisfy the following first and second requirements. The first requirement is that the first and second placement surfaces are in a two-fold symmetric positional relationship when the cutting device is viewed in a direction along the second axis Y. The second requirement is that the first and second placement surfaces are located on an imaginary line that passes through the two-fold symmetric rotation center related to the first requirement and is parallel to the third axis Z when the cutting device is viewed in a direction along the second axis Y.

[0061] Regardless of the number of detection mechanisms provided in the cutting device, it is not necessary for the first table and the second table to have the same shape for one set of detection mechanisms. The shapes of the first table and the second table may be different from each other.

[0062] Regardless of the number of detection mechanisms provided in the cutting device, it is not necessary for the first table and the second table to have the same dimensions for one set of detection mechanisms. The dimensions of the first table and the second table may be different from each other.

[0063] Regardless of the number of detection mechanisms provided in the cutting device, it is not essential that a gap be provided between the first table and the second table for one set of detection mechanisms. The gap between the first table and the second table may be eliminated in either or both of the direction along the first axis X and the direction along the third axis Z. However, it is more preferable to provide a gap between the first table and the second table to obtain accurate detection results.

[0064] Regardless of the number of detection mechanisms provided in the cutting device, the positional relationship between the cutting edge 83A of the cutting blade 83 and the first and second placement surfaces for one detection mechanism is not limited to the examples in the above embodiments. That is, when the cutting device is viewed in a direction along the second axis Y, it is not necessary for the cutting edge 83A to extend on a reference straight line. It is sufficient that the placement condition is satisfied, that both the first and second placement surfaces are located within the range of the cutting edge 83A when viewed in a direction along the second axis Y. However, if the gap between the first and second tables is sufficiently small, it is acceptable for this placement condition not to be satisfied. For example, as in the cutting device 510 shown in FIG. 7, the first table 521 and the second table 522 constituting the detection mechanism 511 are both configured as rectangular parallelepipeds and are arranged with a gap between them in the direction along the first axis X. When such a configuration is employed, if the gap between the first table 521 and the second table 522 is considerably small, the entire cutting edge 83A may be located on the boundary line between the first placement surface 521A and the second placement surface 522A or in the gap between the first placement surface 521A and the second placement surface 522A when viewing the cutting device 510 in a direction along the second axis Y. Consider a comparative example with respect to the configuration of FIG. 7 , in which the gap between the first placement surface 521A and the second placement surface 522A is considerably large. In this comparative example, when the cutting blade 83 cuts the object N, the cutting blade 83 pushes the object N into the gap, as shown by arrow D in FIG. 8 . When viewing the object N in a direction along the third axis Z, the object N warps upward in a V-shape, with the portion located in the gap as its lower end. In this case, unlike when the entire cutting object N is arranged parallel to the first placement surface 521A and the second placement surface 522A, the contact area between the cutting object N and each placement surface 521A, 522A is reduced due to the upward warping of the cutting object N. As a result, the force acting on the cutting object N during cutting is less likely to be transmitted from the cutting object N to the first placement surface 521A and the second placement surface 522A. In this case, there is a risk that the force acting on the cutting object N cannot be accurately detected. In this regard, when the gap is small, the above-mentioned upward warping does not occur at all.When cutting object N with cutting blade 83, cutting object N is positioned parallel to first placement surface 521A and second placement surface 522A. In this case, the contact area between cutting object N and each placement surface 521A, 522A is large, so the force acting on cutting object N can be accurately captured as the movement of first table 521 and second table 522. Therefore, similar to (1) above, more accurate information can be obtained about the force acting on cutting blade 83 and cutting object N. From this perspective, when adopting a configuration in which the entire cutting edge 83A is located on the boundary line between first placement surface 521A and second placement surface 522A or in the gap between them, it is sufficient to design in advance the dimensions of the gap that will prevent cutting object N from warping up.

[0065] 7 is used, when the cutting device 510 is viewed in a direction along the second axis Y, the entire cutting edge 83A may extend along the third axis Z at a position slightly offset from the boundary line between the first mounting surface 521A and the second mounting surface 522A or from the gap between the first mounting surface 521A and the second mounting surface 522A. In other words, when the cutting device is viewed in a direction along the second axis Y, the entire cutting edge 83A may be located on only one of the first mounting surface and the second mounting surface.

[0066] The dimensions of the first table are not limited to those of the above-described embodiments. The same applies to the second table. The dimensions of the gap between the first table and the second table are also not limited to those of the above-described embodiments. The dimensions of the first table and the second table may be set appropriately, taking into account the dimensions of the cutting object N, etc.

[0067] The means for holding the object N to be cut on the first table is not limited to using suction. The means for holding the object N to be cut on the first table may use other configurations, such as an adhesive sheet, instead of or in addition to suction. The same applies to the second table.

[0068] It is not essential that the force components detected by the first dynamometer 71 include a component in the direction along the third axis Z. The first dynamometer 71 only needs to be able to detect a force acting on the first table in the direction along the first axis X and a force in the direction along the second axis Y. As with the first dynamometer 71, it is not essential that the force components detected by the second dynamometer 72 include a component in the direction along the third axis Z.

[0069] The shape of the first dynamometer 71 is not limited to the example of the above embodiment. The first dynamometer 71 may be any shape as long as it can be placed between the base 15 and the first table. Similar to the first dynamometer 71, the shape of the second dynamometer 72 is not limited to the example of the above embodiment.

[0070] The shape of the cutting blade 83 is not limited to the example in the above embodiment. The cutting blade may be, for example, disk-shaped. The cutting blade may have any shape as long as it can cut the cutting object N and can reciprocate in the direction along the second axis Y.

[0071] The configuration of the vertical movement mechanism 84 is not limited to the example in the above embodiment. The vertical movement mechanism 84 may be any mechanism capable of moving the cutting blade up and down. The shape of the base 15 is not limited to the example in the above embodiment, as long as the base 15 can fix the first table and the second table.

[0072] The use of the cutting device is not limited to obtaining information for designing cutting edges. For example, the cutting device may be used as part of a product manufacturing process, or as needed. The location of the cutting device may vary depending on the purpose of the cutting device.

[0073] The processing device 90 may acquire only instantaneous detection results at predetermined timings, for example, instead of acquiring the detection results of the first dynamometer 71 in time series. The same applies to the detection results of the second dynamometer 72. The processing device 90 may be configured to acquire the detection results of the first dynamometer 71 and the detection results of the second dynamometer 72.

[0074] <Additional Notes> The technical ideas that can be understood from the above-described embodiments and modifications will be described below. [Appendix 1] With the base, a first table fixed to the base and having a first placement surface on which an object to be cut can be placed; a second table fixed to the base, positioned on the same plane as the first placement surface, having a second placement surface on which the object to be cut can be placed, and aligned with the first table in a direction along a first axis parallel to the first placement surface; a cutting blade that is reciprocable along a second axis perpendicular to the first placement surface and that can cut the object to be cut; a first dynamometer positioned between the first table and the base and capable of detecting the magnitude of a force acting on the first table in a direction along the first axis and the magnitude of a force acting on the first table in a direction along the second axis; a second dynamometer positioned between the second table and the base and capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a force acting on the second table in a direction along the second axis; a processing device that acquires the detection results of the first dynamometer and the second dynamometer, When viewed in a direction along the second axis, both the first placement surface and the second placement surface are located within a range in which the cutting edge of the cutting blade is present. Cutting device.

[0075] [Appendix 2] There is a gap between the first table and the second table. 10. The cutting device of claim 1.

[0076] [Appendix 3] the first dynamometer is capable of detecting a magnitude of a force acting on the first table in a direction along the first axis and a magnitude of a force acting on the first table in a direction along the second axis, as well as a magnitude of a force acting on the first table in a direction along a third axis that is perpendicular to both the first axis and the second axis; The second dynamometer is capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a direction along the second axis, as well as the magnitude of a force acting on the second table in a direction along the third axis. 3. The cutting device according to claim 1 or 2.

[0077] [Appendix 4] the first table and the second table have the same shape and dimensions; When viewed in a direction along the second axis, the first placement surface and the second placement surface are in a two-fold symmetric positional relationship; When a virtual line is imagined that passes through the center of rotation of the two-fold symmetry and is parallel to a third axis that is perpendicular to both the first axis and the second axis while viewed in a direction along the second axis, both the first placement surface and the second placement surface are present on the virtual line, and the cutting edge of the cutting blade passes through the center of rotation and extends on the virtual line. 4. A cutting device according to any one of claims 1 to 3.

[0078] [Appendix 5] two sets of detection mechanisms, each set including the first table, the second table, the first dynamometer, and the second dynamometer; the two sets of detection mechanisms are aligned in a direction perpendicular to both the first axis and the second axis, When viewed in a direction along the second axis, the first mounting surface and the second mounting surface of each of the two sets of detection mechanisms are located within a range in which the cutting edge of the cutting blade is present. 5. A cutting device according to any one of appendices 1 to 4.

[0079] [Appendix 6] With the base, a first table fixed to the base and having a first placement surface on which an object to be cut can be placed; a second table fixed to the base, positioned on the same plane as the first placement surface, having a second placement surface on which the object to be cut can be placed, and aligned with the first table in a direction along a first axis parallel to the first placement surface; a cutting blade that is reciprocable along a second axis perpendicular to the first placement surface and that can cut the object to be cut; a first dynamometer positioned between the first table and the base and capable of detecting the magnitude of a force acting on the first table in a direction along the first axis and the magnitude of a force acting on the first table in a direction along the second axis; a second dynamometer positioned between the second table and the base and capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a force acting on the second table in a direction along the second axis; a processing device that acquires the detection results of the first dynamometer and the second dynamometer, When viewed in a direction along the second axis, the entire cutting edge of the cutting blade is located on the boundary line between the first mounting surface and the second mounting surface, or in the gap between the first mounting surface and the second mounting surface. Cutting device.

[0080] [Appendix 7] the first dynamometer is capable of detecting a magnitude of a force acting on the first table in a direction along the first axis and a magnitude of a force acting on the first table in a direction along the second axis, as well as a magnitude of a force acting on the first table in a direction along a third axis that is perpendicular to both the first axis and the second axis; The second dynamometer is capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a direction along the second axis, as well as the magnitude of a force acting on the second table in a direction along the third axis. 10. The cutting device according to claim 6. [Explanation of symbols]

[0081] N...Cutting target 10,110,210,310,410,510…cutting device 11,211,311,411,511…Detection mechanism 15...Bass 21,221,321,421,521…Table 1 21A, 221A, 321A, 421A, 521A...First mounting surface 22,222,322,422,522…Table 2 22A, 222A, 322A, 422A, 522A...Second mounting surface 71...1st dynamometer 72…Second dynamometer 83…Cutting blade 83A...Cutting edge 90...Processing equipment 111...First detection mechanism 112...Second detection mechanism

Claims

1. With the base, a first table fixed to the base and having a first placement surface on which an object to be cut can be placed; a second table fixed to the base, the second table having a second placement surface located on the same plane as the first placement surface and on which the object to be cut can be placed, and the second table being aligned with the first table in a direction along a first axis parallel to the first placement surface; a cutting blade that is reciprocable along a second axis perpendicular to the first placement surface and that is capable of cutting the object to be cut; a first dynamometer positioned between the first table and the base and capable of detecting a magnitude of a force acting on the first table in a direction along the first axis and a magnitude of a force acting on the first table in a direction along the second axis; a second dynamometer positioned between the second table and the base and capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a force acting on the second table in a direction along the second axis; a processing device that acquires the detection results of the first dynamometer and the second dynamometer, When viewed in a direction along the second axis, both the first placement surface and the second placement surface are located within a range in which the cutting edge of the cutting blade is present. Cutting device.

2. There is a gap between the first table and the second table.

2. The cutting device of claim 1.

3. the first dynamometer is capable of detecting a magnitude of a force acting on the first table in a direction along the first axis and a magnitude of a force acting on the first table in a direction along the second axis, as well as a magnitude of a force acting on the first table in a direction along a third axis perpendicular to both the first axis and the second axis; The second dynamometer is capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a direction along the second axis, as well as the magnitude of a force acting on the second table in a direction along the third axis.

2. The cutting device of claim 1.

4. the first table and the second table have the same shape and dimensions; When viewed in a direction along the second axis, the first placement surface and the second placement surface are in a positional relationship of dyad symmetry, When a virtual line is imagined that passes through the center of rotation of the two-fold symmetry and is parallel to the third axis while viewed in a direction along the second axis, both the first placement surface and the second placement surface are present on the virtual line, and the cutting edge of the cutting blade passes through the center of rotation and extends on the virtual line.

4. The cutting device of claim 3.

5. two sets of detection mechanisms, each set including the first table, the second table, the first dynamometer, and the second dynamometer; the two sets of detection mechanisms are aligned in a direction perpendicular to both the first axis and the second axis, When viewed in a direction along the second axis, the first mounting surface and the second mounting surface of each of the two sets of detection mechanisms are located within a range in which the cutting edge of the cutting blade is present.

2. The cutting device of claim 1.

6. With the base, a first table fixed to the base and having a first placement surface on which an object to be cut can be placed; a second table fixed to the base, the second table having a second placement surface located on the same plane as the first placement surface and on which the object to be cut can be placed, and the second table being aligned with the first table in a direction along a first axis parallel to the first placement surface; a cutting blade that is reciprocable along a second axis perpendicular to the first placement surface and that is capable of cutting the object to be cut; a first dynamometer positioned between the first table and the base and capable of detecting a magnitude of a force acting on the first table in a direction along the first axis and a magnitude of a force acting on the first table in a direction along the second axis; a second dynamometer positioned between the second table and the base and capable of detecting the magnitude of a force acting on the second table in a direction along the first axis and a force acting on the second table in a direction along the second axis; a processing device that acquires the detection results of the first dynamometer and the second dynamometer, When viewed in a direction along the second axis, the entire cutting edge of the cutting blade is located on the boundary line between the first mounting surface and the second mounting surface, or in the gap between the first mounting surface and the second mounting surface. Cutting device.

Images