Cutting clamp

Abstract

The invention provides a cutting jig suitable for cutting a neck. A cutting jig for cutting the neck of a single crystal ingot; the cutting device is provided with a shell, a cutting tool, a front end side pushing part and a base end side pushing part. A housing that has a first main body housing, a hinge part, and a second main body housing, can be opened and closed by rotation via the hinge part, and forms a tip-side opening and a base-side opening through which the neck part passes, and a tip-side inner space and a base-side inner space in a closed state of the housing; the front end side pushing part is provided with a front end side first pushing component and a front end side second pushing component; the base-end-side abutting portion has a base-end-side first abutting member and a base-end-side second abutting member. The cutting tool has a cutting edge portion, is held by the first main body case between the tip-side first pressing member and the base-side first pressing member, and cuts the neck with the cutting edge portion by moving relative to the first main body case.

Description

Technical Field

[0001] This invention relates to cutting clamps. Background Technology

[0002] The single crystal ingot is formed by being pulled from the molten liquid to form a shape with a neck, shoulder and straight body (see, for example, Patent Document 1), and then the neck is cut off and conveyed toward the next process.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2016-44083 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] The purpose of this invention is to provide a cutting clamp suitable for severing the neck.

[0008] Methods used to solve problems

[0009] One aspect of the present invention is as follows.

[0010] [1] A cutting jig is used to cut the neck of a single crystal ingot; it has a housing, a cutting tool, a front end side pusher, and a base end side pusher; the housing has a first main body housing, a hinge portion, and a second main body housing, which can be opened and closed by mutual rotation of the first main body housing and the second main body housing via the hinge portion centered on a rotation axis extending in the length direction of the neck; when the housing is closed, a front end side opening and a base end side opening through which the neck passes are formed, a front end side internal space continuous with the front end side opening, and a base end side internal space continuous with the base end side opening; the front end side pusher has a front end side first pusher member located in the front end side internal space and held by the first main body housing, and a front end side pusher member located in the front end side internal space and held by the first main body housing. The front end side has a second pushing member in the front end side interior space and held by the aforementioned second main body housing; the base end side has a base end side first pushing member located in the aforementioned base end side interior space and held by the aforementioned first main body housing, and a base end side second pushing member located in the aforementioned base end side interior space and held by the aforementioned second main body housing; the cutting tool has a blade tip, and the cutting tool is held by the aforementioned first main body housing between the aforementioned front end side first pushing member and the aforementioned base end side first pushing member, and moves relative to the aforementioned first main body housing in a state where the aforementioned neck is closed by the respective pushing of the aforementioned front end side first pushing member, the aforementioned front end side second pushing member, the aforementioned base end side first pushing member and the aforementioned base end side second pushing member, and cuts off the aforementioned neck with the aforementioned blade tip.

[0011] [2] As described in [1], the aforementioned front end side first pushing member, the aforementioned front end side second pushing member, the aforementioned base end side first pushing member and the aforementioned base end side second pushing member are respectively formed by the soft material pushed by the aforementioned neck.

[0012] [3] The cutting clamp as described in [1] or [2] has a cutting operation part, which performs a cutting operation by being cut, causing the cutting tool to move relative to the aforementioned housing to cut off the aforementioned neck.

[0013] [4] As described in [3], the cutting clamp is a push-in operation from the outside toward the interior space when the housing is closed.

[0014] [5] The cutting clamp as described in any one of [1] to [4] has a closed state maintaining member that maintains the aforementioned housing in a closed state until it is released.

[0015] [6] The cutting clamp as described in any one of [1] to [5] has a support tool held by the aforementioned second main body housing; the aforementioned support tool has a support portion that supports the aforementioned neck from the opposite side of the aforementioned cutting tip portion to the aforementioned neck when the aforementioned neck is pushed by the aforementioned front end side first push member, the aforementioned front end side second push member, the aforementioned base end side first push member and the aforementioned base end side second push member and the aforementioned housing is closed.

[0016] [7] As described in [6], the aforementioned support portion has a blade tip portion, and the aforementioned neck is clamped and cut by the aforementioned blade tip portion of the aforementioned cutting tool and the aforementioned blade tip portion of the aforementioned support portion.

[0017] [8] The cutting clamp as described in [6] or [7] has a support operation part, which supports the neck by being pushed in from the outside toward the interior space when the aforementioned housing is closed, causing the aforementioned support tool to move relative to the aforementioned second main housing.

[0018] [9] As described in any one of [1] to [8], when viewed from the front end side toward the base end side, the first radial width of the opening on the front end side about the aforementioned axis of rotation is greater than the second width in the direction perpendicular to that direction.

[0019]

[10] The cutting clamp as described in any one of [1] to [9], wherein the aforementioned hinge portion is composed of a torque hinge.

[0020]

[11] The cutting clamp as described in any one of [1] to

[10] , wherein the housing has a light-transmitting portion made of a light-transmitting material that allows the cutting tool and the contact portion of the neck to be seen from the outside when the housing is closed.

[0021] Invention Effects

[0022] According to the present invention, a cutting clamp suitable for severing the neck can be provided. Attached Figure Description

[0023] Figure 1 This is a perspective view of a cutting clamp according to an embodiment of the present invention, with the housing open.

[0024] Figure 2 It is indicated from the upper diagonal side. Figure 1 A three-dimensional image showing the situation when the cutting jig cuts off the neck.

[0025] Figure 3 It is indicated from the lower diagonal side. Figure 2 A three-dimensional diagram showing the situation.

[0026] Figure 4 This is a schematic diagram of a single crystal ingot formed by the Czochralski process. Detailed Implementation

[0027] The following is a reference to the appendix. Figure 1 The embodiments of the present invention are illustrated below.

[0028] exist Figures 1-3 The image shows a cutting clamp 1 according to an embodiment of the present invention. Figure 4 The ingot 2 is a single crystal ingot, formed by being pulled from molten metal in a pulling process, to have a neck 2a extending downward from a seed held by a seed chuck 13 suspended on a wire in a single crystal manufacturing apparatus, a shoulder 2b extending downward in a funnel shape from the lower end of the neck 2a, and a straight body 2c extending downward in a cylindrical shape from the lower end of the shoulder 2b. The single crystal ingot 2 is, for example, a single crystal silicon ingot to be processed into a wafer. The cutting jig 1 is suitable for cutting the neck 2a of the single crystal ingot 2 suspended on the wire, and is particularly suitable for cutting the neck 2a at the top.

[0029] like Figures 1-3 As shown, the cutting clamp 1 has a housing 3, a cutting tool 4, a front end side pushing part 5, and a base end side pushing part 6.

[0030] The housing 3 has a first main housing 3a, a hinge portion 3c, and a second main housing 3b. It can be opened and closed by mutual rotation of the first main housing 3a and the second main housing 3b via the hinge portion 3c, centered on a rotation axis O extending in the length direction of the neck 2a. In the closed state of the housing 3 ( Figures 2-3 In the state shown, a front-end side opening 7 and a base-end side opening 8 through which the neck 2a passes are formed, a front-end side internal space S1 continuous with the front-end side opening 7, and a base-end side internal space S2 continuous with the base-end side opening 8. Furthermore, the term "front-end side" refers to the front-end side of the neck 2a (the side of the seed chuck 13), and the term "base-end side" refers to the base-end side of the neck 2a (the side of the shoulder 2b).

[0031] The front end pushing part 5 has a front end first pushing member 5a located in the front end side internal space S1 and held by the first main body housing 3a, and a front end second pushing member 5b located in the front end side internal space S1 and held by the second main body housing 3b. The base end pushing part 6 has a base end first pushing member 6a located in the base end side internal space S2 and held by the first main body housing 3a, and a base end second pushing member 6b located in the base end side internal space S2 and held by the second main body housing 3b.

[0032] The cutting tool 4 has a blade tip 4a. The cutting tool 4 is held between the first front end pushing member 5a and the first base end pushing member 6a by the first main body housing 3a. The housing 3 is closed (also called the configuration state) by the neck 2a being pushed by the first front end pushing member 5a, the second front end pushing member 5b, the first base end pushing member 6a, and the second base end pushing member 6b, respectively. (Refer to...) Figures 2-3 The cutting tool 4 moves relative to the first main body housing 3a and cuts off the neck 2a with the blade tip 4a. The blade tip 4a of the cutting tool 4 has a front end edge 4a1 extending radially about the rotation axis O.

[0033] The first front-end pushing member 5a, the second front-end pushing member 5b, the first base-end pushing member 6a, and the second base-end pushing member 6b are respectively formed from soft parts 5a1, 5b1, 6a1, and 6b1 that are pushed by the neck 2a. The soft parts 5a1, 5b1, 6a1, and 6b1 are preferably capable of withstanding temperatures above 100°C, and may be formed from silicone sponges, for example. The soft parts 5a1, 5b1, 6a1, and 6b1 are cuboid in shape.

[0034] The first front-end pushing member 5a includes a soft member 5a1 having a pushing surface 5a3 that is pushed against by the neck 2a, and an adhesive member 5a2 that attaches the opposite side of the pushing surface 5a3 of the soft member 5a1 to the first main body housing 3a by means of adhesive bonding. The second front-end pushing member 5b includes a soft member 5b1 having a pushing surface 5b3 that is pushed against by the neck 2a, and an adhesive member 5b2 that attaches the opposite side of the pushing surface 5b3 of the soft member 5b1 to the second main body housing 3b by means of adhesive bonding. The first base-end pushing member 6a includes a soft member 6a1 having a pushing surface 6a3 that is pushed against by the neck 2a, and an adhesive member 6a2 that attaches the opposite side of the pushing surface 6a3 of the soft member 6a1 to the first main body housing 3a by means of adhesive bonding. The second pushing member 6b on the base end side includes a soft member 6b1 having a pushing surface 6b3 pushed by the neck 2a, and an adhesive member 6b2 that attaches the opposite side of the pushing surface 6b3 of the soft member 6b1 to the second main body housing 3b by means of adhesive. The adhesive members 5a2, 5b2, 6a2, 6b2 overlap with the soft members 5a1, 5b1, 6a1, 6b1, and the overall shape of the adhesive members 5a2, 5b2, 6a2, 6b2 and the soft members 5a1, 5b1, 6a1, 6b1 is rectangular. The adhesive members 5a2, 5b2, 6a2, 6b2 can be formed, for example, from a gel-like resin or elastomer (e.g., polyurethane or urethane elastomer).

[0035] With the housing 3 closed, a front-side gap G1 is formed between the pushed-off surface 5a3 of the first front-side pushing member 5a and the pushed-off surface 5b3 of the second front-side pushing member 5b, and a base-side gap G2 is formed between the pushed-off surface 6a3 of the first base-side pushing member 6a and the pushed-off surface 6b3 of the second base-side pushing member 6b. Alternatively, the structure can be configured such that, with the housing 3 closed, the pushed-off surface 5a3 of the first front-side pushing member 5a and the pushed-off surface 5b3 of the second front-side pushing member 5b are in contact with each other, and the pushed-off surface 6a3 of the first base-side pushing member 6a and the pushed-off surface 6b3 of the second base-side pushing member 6b are in contact with each other.

[0036] The first main body shell 3a has a front-side first limiting surface 3a1 that restricts the movement of the front-side first pushing member 5a from the front-side internal space S1 to the base-side internal space S2, and a base-side first limiting surface 3a2 that restricts the movement of the base-side first pushing member 6a from the base-side internal space S2 to the front-side internal space S1. The second main body shell 3b has a front-side second limiting surface 3b1 that restricts the movement of the front-side second pushing member 5b from the front-side internal space S1 to the base-side internal space S2, and a base-side second limiting surface 3b2 that restricts the movement of the base-side second pushing member 6b from the base-side internal space S2 to the front-side internal space S1.

[0037] The first main body shell 3a has a front-side first release limiting surface 3a3 that restricts the front-side first pushing member 5a from the front-side internal space S1 to the front-side, and a base-side first release limiting surface 3a4 that restricts the base-side first pushing member 6a from the base-side internal space S2 to the base-side. The second main body shell 3b has a front-side second release limiting surface 3b3 that restricts the front-side second pushing member 5b from the front-side internal space S1 to the front-side, and a base-side second release limiting surface 3b4 that restricts the base-side second pushing member 6b from the base-side internal space S2 to the base-side.

[0038] The cutting clamp 1 has a cutting operation section 9, which cuts off the neck 2a by moving the cutting tool 4 relative to the housing 3 through a cutting execution operation. The cutting execution operation is a push-in operation from the outside toward the internal space S with the housing 3 closed. The cutting operation section 9 and the cutting tool 4 move together relative to the first main housing 3a. The first main housing 3a has a first insertion hole 3a5 for inserting the cutting operation section 9. The cutting operation section 9 cuts off the neck 2a by moving relative to the first main housing 3a within the first insertion hole 3a5 with the aid of the cutting tool 4. A spring (not shown) is provided between the cutting operation section 9 and the first main housing 3a. The push-in operation is performed against the elastic force of the spring. If the push-in operation is released, the cutting operation section 9 returns to its original position by the elastic force of the spring.

[0039] The cutting clamp 1 has a closed state maintaining member 10, which maintains the housing 3 in a closed state until it is released. The closed state maintaining member 10 is composed of a first magnetic body 10a disposed in the first main housing 3a and a second magnetic body 10b disposed in the second main housing 3b and attracted to the first magnetic body 10a.

[0040] The cutting clamp 1 has a support tool 11 held by the second main body housing 3b. The support tool 11 has a support portion 11a, which supports the neck 2a from the opposite side of the cutting tool 4's blade tip 4a when the neck 2a is closed (configured state) by being pushed by the front end side first pushing member 5a, the front end side second pushing member 5b, the base end side first pushing member 6a, and the base end side second pushing member 6b. The support portion 11a has a blade tip 11b, which clamps and cuts the neck 2a by the cutting tool 4's blade tip 4a and the support portion 11a. The blade tip 11b of the support portion 11a has a front edge 11b1 extending radially about the rotation axis O.

[0041] The cutting clamp 1 has a support operating part 12, which supports the neck 2a by being pushed in from the outside toward the internal space S when the housing 3 is closed, causing the support tool 11 to move relative to the second main housing 3b. The support operating part 12 and the support tool 11 move relative to the second main housing 3b integrally. The second main housing 3b has a second insertion hole 3b5 for the support operating part 12 to be inserted into. The support operating part 12 cuts the neck 2a by moving relative to the second main housing 3b within the second insertion hole 3b5, using the support tool 11. A spring (not shown) is provided between the support operating part 12 and the second main housing 3b. The pushing operation is performed against the elastic force of the spring. If the pushing operation is released, the support operating part 12 returns to its original position by means of the elastic force of the spring.

[0042] When viewed from the front end side towards the base end side, the first radial width W11 of the front end opening 7 about the rotation axis O is larger than the second width W12 in the direction perpendicular to that direction (see reference). Figure 2 When viewed from the base end side toward the front end side, the first radial width W21 of the base end side opening 8 about the rotation axis O is larger than the second width W22 in the direction perpendicular to that direction (see reference). Figure 3 In the configured state, the second width W12 of the front end side opening 7 is larger than the diameter of the neck 2a at the portion passing through the front end side opening 7. Furthermore, in the configured state, the second width W22 of the base end side opening 8 is larger than the diameter of the neck 2a at the portion passing through the base end side opening 8.

[0043] The housing 3 has a light-transmitting portion 3d made of a light-transmitting material, which allows the cutting tool 4 to be seen from the outside when the housing 3 is closed. The light-transmitting portion 3d is formed, for example, by forming all or part of the housing 3 with a light-transmitting material. The light-transmitting portion 3d may be formed, for example, with a resin (e.g., acrylic acid).

[0044] The first main housing 3a and the second main housing 3b can be formed, for example, of resin (e.g., acrylic acid). The cutting operation part 9 and the supporting operation part 12 can be formed, for example, of resin or metal (e.g., aluminum). The cutting tool 4 and the supporting tool 11 can be made, for example, of ceramic cutting tools (e.g., zirconia-based ceramics).

[0045] The hinge portion 3c consists of a first rotating portion 3c1 integrally held by the first main body housing 3a, and a second rotating portion 3c2 integrally held by the second main body housing 3b and rotating relative to the first rotating portion 3c1 about the rotation axis O. The hinge portion 3c is a torque hinge that does not rotate until a predetermined torque is applied. By using a torque hinge to form the hinge portion 3c, the hinge portion 3c can be held in a partially open state.

[0046] The housing 3 is spherical in the closed state, so that the neck 2a can be cut off by simultaneously clamping the cutting operation part 9 and the support operation part 12 with one hand in the configured state.

[0047] When cutting the neck 2a of the single crystal ingot 2, firstly, the upper part of the neck 2a is clamped in the first main body housing 3a and the second main body housing 3b from the open state of the housing 3, so that the neck 2a passes through the front end side opening 7 and the base end side opening 8, is clamped by the front end side first pushing member 5a and the front end side second pushing member 5b, and is clamped by the base end side first pushing member 6a and the base end side second pushing member 6b. Immediately after pulling, even if a cooling process is provided after pulling, thermal stress may occur in the neck 2a, and fragments of the neck 2a may fly off at the moment of tool contact. In addition, the neck 2a may be at a high temperature of, for example, 100°C or higher immediately after pulling. According to the method of clamping with the housing 3 as described above, fragments of the neck 2a can be easily positioned on the neck 2a even when the neck 2a is at a high temperature, while preventing fragments of the neck 2a from flying off.

[0048] Furthermore, when the neck 2a of the newly pulled single crystal ingot 2 is pulled down by the seed chuck 13 and received by a receiving member (not shown) before the neck 2a is cut off, if the pull-down position of the seed chuck 13 holding the seed crystal is too low, it may bend into an arc shape. Even in such a case, because the front end side opening 7 and the base end side opening 8 (especially the front end side opening 7) are slender in the radial direction of the rotation axis O, it is possible to allow the arc-shaped bending of the neck 2a inside the front end side opening 7 and the base end side opening 8 while positioning the neck 2a within the housing 3.

[0049] Furthermore, since the hinge portion 3c is a torque hinge, the housing 3 will not close accidentally when positioned in the neck 2a, thus ensuring safe operation. Moreover, after being temporarily positioned in the neck 2a, the closed-state holding member 10 can maintain the configuration state effectively.

[0050] After setting the cutting clamp 1 in the above-described manner, the neck 2a can be cut off by the cutting tool 4 and the support tool 11 by clamping the cutting clamp 1, for example, with one hand. At this time, since the neck 2a is clamped at the front end of the cutting section by the front end first push member 5a and the front end second push member 5b, and at the base end of the cutting section by the base end first push member 6a and the base end second push member 6b, it is possible to prevent fragments generated during the cutting of the neck 2a from scattering to the surroundings. In particular, since the first front-end pushing member 5a, the second front-end pushing member 5b, the first base-end pushing member 6a, and the second base-end pushing member 6b are formed of soft parts 5a1, 5b1, 6a1, and 6b1, the outer periphery of the neck 2a can be well enclosed while the soft parts 5a1, 5b1, 6a1, and 6b1 are deformed, thus improving the effect. Furthermore, the cutting state can be checked through the light-transmitting portion 3d of the housing 3 while cutting.

[0051] The embodiments of the present invention have been described above, but the present invention is not limited to the foregoing embodiments, and the foregoing embodiments can be modified in various ways without departing from the spirit of the present invention.

[0052] For example, the support portion 11a may not have the tip portion 11b and may only support the neck portion 2a.

[0053] Explanation of reference numerals in the attached figures

[0054] 1 Cutting clamp

[0055] 2 single crystal ingots

[0056] 2a Neck

[0057] 2b shoulder

[0058] 2c Straight body

[0059] 3 shells

[0060] 3a First Main Shell

[0061] 3a1 Front-end side first limiting surface

[0062] 3a2 Base end side first limiting surface

[0063] 3a3 front end side first exit restriction surface

[0064] 3a4 base end side first release restriction surface

[0065] 3a5 First Insertion Hole

[0066] 3b Second Main Shell

[0067] 3b1 Front-end side second limiting surface

[0068] 3b2 base end side second limiting surface

[0069] 3b3 Front Side Second Exit Restriction Surface

[0070] 3b4 base end side second release restriction surface

[0071] 3b5 second insertion hole

[0072] 3C hinge section

[0073] 3c1 First Rotating Part

[0074] 3c2 Second Rotating Part

[0075] 3D translucent part

[0076] 4 Cutting tools

[0077] 4a blade tip

[0078] 4a1 front edge

[0079] 5. Front Side Push Part

[0080] 5a Front side first push component

[0081] 5a1 soft components

[0082] 5a2 adhesive

[0083] 5a3 was pushed back

[0084] 5b Front Side Second Pushing Component

[0085] 5b1 soft components

[0086] 5b2 adhesive

[0087] 5b3 was pushed back

[0088] 6. Base end side push part

[0089] 6a Base end side first push component

[0090] 6a1 soft components

[0091] 6a2 adhesive

[0092] 6a3 was pushed back

[0093] 6b Base end side second push component

[0094] 6b1 soft components

[0095] 6b2 adhesive

[0096] 6b3 was pushed back

[0097] 7. Front side opening

[0098] 8. Base end side opening

[0099] 9 Cut-off Operation Section

[0100] 10 Closed State Maintenance Components

[0101] 10a First Magnetic Body

[0102] 10b Second Magnetic Body

[0103] 11 Support tools

[0104] 11a Support section

[0105] 11b blade tip

[0106] 11b1 front end

[0107] 12 Support Operating Unit

[0108] 13 Seed Clamps

[0109] O Rotation axis

[0110] S interior space

[0111] S1 front-side internal space

[0112] S2 basement side internal space

[0113] G1 front end clearance

[0114] G2 basement side gap

[0115] The first width of the front side opening of W11

[0116] The second width of the front side opening of W12

[0117] The first width of the W21 base-side opening

[0118] The second width of the W22 base-side opening

Claims

1. A cutting jig that cuts a neck portion of a single crystal ingot, characterized by comprising: a housing, a cutting tool, a front end side abutting portion, and a base end side abutting portion; the housing has a first main housing, a hinge portion, and a second main housing, is capable of being opened and closed by mutual rotation of the first main housing and the second main housing via the hinge portion about a rotation axis extending in a length direction of the neck portion, and in a closed state of the housing, forms a front end side opening portion and a base end side opening portion that respectively allow the neck portion to pass therethrough, a front end side internal space that is continuous with the front end side opening portion, and a base end side internal space that is continuous with the base end side opening portion; the front end side abutting portion has a front end side first abutting member that is located in the front end side internal space and is held by the first main housing, and a front end side second abutting member that is located in the front end side internal space and is held by the second main housing; the base end side abutting portion has a base end side first abutting member that is located in the base end side internal space and is held by the first main housing, and a base end side second abutting member that is located in the base end side internal space and is held by the second main housing; the cutting tool has a blade tip portion, and the cutting tool is held by the first main housing between the front end side first abutting member and the base end side first abutting member, and cuts the neck portion with the blade tip portion by relatively moving with respect to the first main housing in a state in which the housing is closed with the neck portion being abutted by each of the front end side first abutting member, the front end side second abutting member, the base end side first abutting member, and the base end side second abutting member.

2. The cutting jig according to claim 1, characterized in that: the front end side first abutting member, the front end side second abutting member, the base end side first abutting member, and the base end side second abutting member are each formed of a soft member that is abutted by the neck portion.

3. The cutting jig according to claim 1, characterized by comprising a cutting operation portion that relatively moves the cutting tool with respect to the housing to cut the neck portion by being subjected to a cutting execution operation.

4. The cutting jig according to claim 3, characterized in that: the cutting execution operation is a push-in operation from the outside toward the internal space in the state in which the housing is closed.

5. The cutting jig according to claim 1, characterized by comprising a closed state maintaining member that maintains the housing in the closed state until a release operation is received.

6. The cutting jig according to claim 1, characterized by comprising a support tool that is held by the second main housing; the support tool has a support portion that supports the neck portion from the opposite side of the blade tip portion of the cutting tool by abutting against the neck portion with the support portion in the state in which the housing is closed with the neck portion being abutted by each of the front end side first abutting member, the front end side second abutting member, the base end side first abutting member, and the base end side second abutting member.

7. The cutting jig according to claim 6, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The aforementioned support portion has a blade tip portion, and the aforementioned neck portion is sandwiched by the aforementioned blade tip portion of the aforementioned cutting tool and the aforementioned blade tip portion of the aforementioned support portion to be cut.

8. The cutting jig according to claim 6, wherein The support operation portion relatively moves the aforementioned support tool with respect to the aforementioned second main body case to support the aforementioned neck portion by being pushed in from the outside toward the inside space in a state in which the aforementioned case is closed.

9. The cutting jig according to claim 1, wherein When viewed from the front end side toward the base end side, a first width in a radial direction with respect to the aforementioned rotation axis in the aforementioned front end side opening portion is larger than a second width in a direction perpendicular to the aforementioned direction.

10. The cutting jig according to claim 1, wherein The aforementioned hinge portion is composed of a torque hinge.

11. The cutting jig according to claim 1, wherein The case has a light-transmitting portion formed of a light-transmitting material, which can visually recognize an abutting portion of the aforementioned cutting tool and the aforementioned neck portion from the outside in a state in which the aforementioned case is closed.

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