Crystal bar positioning clamp

Abstract

The embodiment of the utility model provides a crystal bar positioning clamp, and relates to the field of silicon carbide clamps. The crystal bar positioning clamp comprises a frame and a positioning assembly. The support comprises a supporting plate, a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are arranged on the supporting plate in a spaced mode in the first direction, the first fixing plate and the second fixing plate are each provided with a first mounting hole and a second mounting hole, and the positioning assembly comprises a first positioning column and a second positioning column. The two ends of the first positioning column are connected with the first mounting holes of the first fixing plate and the second fixing plate respectively, the two ends of the second positioning column are connected with the second mounting holes of the first fixing plate and the second fixing plate respectively, the first mounting holes are strip-shaped holes, and the first positioning column can move in the extending direction of the first mounting holes. Therefore, the silicon carbide crystal bar positioning clamp can assist in clamping silicon carbide crystal bars of different sizes, and the applicability of the crystal bar positioning clamp is improved.

Description

Technical Field

[0001] The utility model relates to the field of silicon carbide clamps, in particular to a crystal rod positioning clamp. Background Art

[0002] Silicon carbide (SiC), as an emerging third-generation semiconductor core material, has excellent properties such as wide bandgap, high critical breakdown electric field strength, high electron mobility, good radiation resistance and chemical stability. This makes it an important substrate wafer material with wide applications, showing good application prospects in the fields of aviation devices, new energy vehicles, rail transportation and household appliances.

[0003] The inventors have found through research that the existing positioning fixtures for silicon carbide crystal rods can usually only fix crystal rods of specific sizes and are not generally applicable. Utility Model Content

[0004] The utility model aims to provide a crystal rod positioning fixture, which can fix crystal rods of various sizes.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a crystal rod positioning fixture, comprising:

[0007] A bracket, the bracket comprising a support plate and a first fixing plate and a second fixing plate spaced apart on the support plate along a first direction, wherein the first fixing plate and the second fixing plate are both provided with a first mounting hole and a second mounting hole;

[0008] The positioning assembly includes a first positioning column and a second positioning column, wherein two ends of the first positioning column are respectively connected to the first mounting holes of the first fixing plate and the second fixing plate, and two ends of the second positioning column are respectively connected to the second mounting holes of the first fixing plate and the second fixing plate;

[0009] Among them, the first mounting holes on the two first fixing plates are opposite to the first mounting holes on the second fixing plates, and the second mounting holes on the first fixing plates are opposite to the second mounting holes on the second fixing plates. The first mounting holes are strip holes, and the first positioning column can move in the extension direction of the first mounting holes to approach or move away from the second positioning column.

[0010] In an optional embodiment, the second mounting hole is also a strip-shaped hole, and the extension direction of the second mounting hole is consistent with or forms an angle with the extension direction of the second mounting hole.

[0011] In an optional embodiment, the extension direction of the second mounting hole is consistent with the extension direction of the first mounting hole.

[0012] In an optional embodiment, the crystal rod positioning fixture also includes a first chuck and a second chuck, the first chuck is arranged on the first fixed plate, and the second chuck is arranged on the second fixed plate, the first chuck and the second chuck can approach or move away from each other to clamp or release the silicon carbide crystal rod, and the first chuck and the second chuck are located between the first positioning column and the second positioning column.

[0013] In an optional embodiment, the first fixing plate is provided with a first matching hole connected to the outer peripheral wall of the first chuck, the axial direction of the first matching hole is parallel to the first direction, and the first chuck can move along the first direction relative to the first matching hole.

[0014] In an optional embodiment, the second fixing plate is provided with a second matching hole connected to the outer peripheral wall of the second chuck, the axial direction of the second matching hole is parallel to the first direction, and the second chuck can move along the first direction relative to the second matching hole.

[0015] In an optional embodiment, the first fixing plate is detachably connected to the support plate, and / or the second fixing plate is detachably connected to the support plate.

[0016] In an optional embodiment, a side baffle is further provided on one side of the support plate, and the side baffle is connected to the support plate at an angle.

[0017] In an optional embodiment, the side baffle is provided with a first positioning notch and a second positioning notch arranged at intervals along the first direction, the first fixing plate is arranged in the first positioning notch and abuts against the side wall of the first positioning notch, and the second fixing plate is arranged in the second positioning notch and abuts against the side wall of the second positioning notch.

[0018] In an optional embodiment, both ends of the first positioning column are connected to the first mounting holes of the first fixing plate and the second fixing plate respectively through threaded fasteners, and both ends of the second positioning column are connected to the second mounting holes of the first fixing plate and the second fixing plate respectively through threaded fasteners.

[0019] The beneficial effect of the embodiment of the utility model is as follows: the embodiment of the utility model provides a crystal rod positioning fixture including a frame and a positioning assembly. The bracket includes a support plate and a first fixed plate and a second fixed plate spaced along a first direction on the support plate, the first fixed plate and the second fixed plate are both provided with a first mounting hole and a second mounting hole, the positioning assembly includes a first positioning column and a second positioning column, the two ends of the first positioning column are respectively connected to the first mounting holes of the first fixed plate and the second fixed plate, the two ends of the second positioning column are respectively connected to the second mounting holes of the first fixed plate and the second fixed plate, the first mounting hole is a strip hole, the first positioning column can move in the extension direction of the first mounting hole to approach or move away from the second positioning column, so that it can assist in clamping silicon carbide crystal rods of different sizes, thereby improving the applicability of the crystal rod positioning fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a crystal rod positioning fixture provided by an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the structure of a first fixing plate provided in an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the structure of a second fixing plate provided in an embodiment of the utility model;

[0024] Figure 4 A schematic structural diagram of a side baffle provided in an embodiment of the utility model.

[0025] Icons: 1-crystal rod positioning fixture; 100-bracket; 110-first fixing plate; 111-first matching hole; 120-second fixing plate; 121-second matching hole; 130-support plate; 140-side baffle; 141-first positioning notch; 1411-first positioning wall; 1412-second positioning wall; 142-second positioning notch; 1421-third positioning wall; 1422-fourth positioning wall; 150-first mounting hole; 160-second mounting hole; 200-positioning assembly; 210-first positioning column; 220-second positioning column; 300-first chuck; 400-second chuck; 500-threaded fastener. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The specific structure of a crystal rod positioning fixture provided by an embodiment of the utility model and the corresponding technical effects it brings are described in detail below in conjunction with the patent drawings.

[0033] Please refer to Figure 1-Figure 4 A crystal rod positioning fixture 1 provided in an embodiment of the utility model includes a bracket 100 and a positioning assembly 200 .

[0034] The bracket 100 includes a support plate 130 and a first fixing plate 110 and a second fixing plate 120 spaced apart along a first direction on the support plate 130. The first fixing plate 110 and the second fixing plate 120 are both provided with a first mounting hole 150 and a second mounting hole 160. It should be noted that the first mounting hole 150 on the first fixing plate 110 is opposite to the first mounting hole 150 on the second fixing plate 120, and the second mounting hole 160 on the first fixing plate 110 is opposite to the second mounting hole 160 on the second fixing plate 120.

[0035] The positioning assembly 200 includes a first positioning column 210 and a second positioning column 220. Both ends of the first positioning column 210 are respectively connected to the first mounting holes 150 of the first fixing plate 110 and the second fixing plate 120. Both ends of the second positioning column 220 are respectively connected to the second mounting holes 160 of the first fixing plate 110 and the second fixing plate 120.

[0036] That is to say, one end of the first positioning column 210 is connected to the first mounting hole 150 on the first fixed plate 110, the other end of the first positioning column 210 is connected to the first mounting hole 150 on the second fixed plate 120, one end of the second positioning column 220 is connected to the second mounting hole 160 on the first fixed plate 110, and the other end of the second positioning column 220 is connected to the second mounting hole 160 on the second fixed plate 120.

[0037] In this embodiment, the first positioning column 210 and the second positioning column 220 are both cylindrical. Therefore, the orthographic projection of the first mounting hole 150 on the first fixing plate 110 falling on the second fixing plate 120 in the first direction coincides with the first mounting hole 150 on the second fixing plate 120, and the orthographic projection of the second mounting hole 160 on the first fixing plate 110 falling on the second fixing plate 120 in the first direction coincides with the second mounting hole 160 on the second fixing plate 120.

[0038] Of course, in some other embodiments, the first positioning post 210 and the second positioning post 220 are not limited to being cylindrical, but may also be other shapes.

[0039] Furthermore, in this embodiment, the first mounting hole 150 is a bar-shaped hole, and the first positioning column 210 can move in the extending direction of the first mounting hole 150 to get closer to or farther away from the second positioning column 220 .

[0040] It should be noted that, generally when clamping a silicon carbide crystal rod, the first positioning column 210 and the second positioning column 220 are respectively against the outer wall of the silicon carbide crystal rod to achieve auxiliary clamping of the silicon carbide crystal rod. Generally, when clamping, the plane where the axis of the first positioning column 210 and the axis of the second positioning column 220 are located passes through the axis of the silicon carbide crystal rod. Since the first positioning column 210 and the second positioning column 220 in some existing crystal rod positioning fixtures 1 cannot approach or move away from each other, only crystal rods of fixed size can be assisted in clamping.

[0041] In this embodiment, since the first mounting hole 150 is a bar-shaped hole, the first positioning column 210 can move in the extension direction of the first mounting hole 150 to approach or move away from the second positioning column 220, thereby assisting in clamping silicon carbide crystal rods of different sizes, thereby improving the applicability of the crystal rod positioning fixture 1.

[0042] It should be noted that when auxiliary clamping of the silicon carbide crystal rod is performed, the first positioning column 210 can be moved in the extension direction of the first mounting hole 150 until the first positioning column 210 abuts against the silicon carbide crystal rod, and the first positioning column 210 can be fixed to the first mounting hole 150 by a fastener to prevent the first positioning column 210 from moving relative to the first mounting hole 150. In this embodiment, the fastener can be a threaded fastener 500. For example, the first positioning column 210 is provided with a stud passing through the first mounting hole 150. The threaded fastener 500 can be a nut. Tightening the nut and the stud can fix the first positioning column 210 to the first fixing plate 110 and the second fixing plate 120, thereby preventing the first positioning column 210 from moving in the extension direction of the first mounting hole 150.

[0043] In detail, the crystal rod positioning fixture 1 also includes a first chuck 300 and a second chuck 400. The first chuck 300 is arranged on the first fixed plate 110, and the second chuck 400 is arranged on the second fixed plate 120. The first chuck 300 and the second chuck 400 can be close to or away from each other to clamp or release the silicon carbide crystal rod. The first chuck 300 and the second chuck 400 are located between the first positioning column 210 and the second positioning column 220.

[0044] In detail, for the first mounting hole 150 and the second mounting hole 160 on the first fixing plate 110 or the first mounting hole 150 and the second mounting hole 160 on the second fixing plate 120, the first mounting hole 150 has a first end close to the second mounting hole 160 and a second end away from the second mounting hole 160, and in the direction from the first end to the second end, the first mounting hole 150 gradually moves away from the outer peripheral wall of the first chuck 300 or the outer peripheral wall of the second chuck 400, that is, when the first positioning column 210 moves on the first mounting hole 150 in the direction from the first end to the second end, the first positioning column 210 gradually moves away from the outer peripheral wall of the first chuck 300 and gradually moves away from the outer peripheral wall of the second chuck 400, so as to adapt to silicon carbide crystal rods with different radial sizes.

[0045] In this embodiment, the outer peripheral walls of the first chuck 300 and the second chuck 400 are both cylindrical outer peripheral walls. In some embodiments, the first chuck 300 and the second chuck 400 are coaxially arranged, and the axis of the first positioning column 210, the axis of the second positioning column 220 and the axis of the first chuck 300 are in the same plane, so that the first positioning column 210 and the second positioning column 220 can more stably clamp the silicon carbide crystal rod between the first chuck 300 and the second chuck 400.

[0046] The first fixing plate 110 is provided with a first matching hole 111 connected to the first chuck 300, the axial direction of the first matching hole 111 is parallel to the first direction, the outer wall of the first chuck 300 is connected to the first matching hole 111 and can move in the first direction relative to the first matching hole 111 to approach or move away from the second chuck 400.

[0047] Optionally, the first chuck 300 is provided with an external thread, and the first matching hole 111 is a threaded hole, that is, through the setting of the first matching hole 111, the position of the first chuck 300 in the first direction can be changed during the process of screwing the first chuck 300, so that the first chuck 300 is close to or away from the second chuck 400 in the first direction.

[0048] The second fixing plate 120 is provided with a second matching hole 121 connected to the second chuck 400, the axial direction of the second matching hole 121 is parallel to the second direction, the outer wall of the second chuck 400 is connected to the second matching hole 121 and can move in the second direction relative to the second matching hole to approach or move away from the second chuck 400.

[0049] Optionally, the second chuck 400 is provided with an external thread, and the second matching hole 121 is a threaded hole. That is, through the setting of the second matching hole 121, the position of the second chuck 400 in the second direction can be changed during the process of screwing the second chuck 400, so that the second chuck 400 is close to or away from the first chuck 300 in the first direction.

[0050] Optionally, the second mounting hole 160 is also a bar-shaped hole, and the extending direction of the second mounting hole 160 is consistent with or forms an angle with the extending direction of the second mounting hole 160 .

[0051] In some embodiments, the extension direction of the second mounting hole 160 is consistent with the extension direction of the first mounting hole 150. Therefore, the second positioning column 220 can also move in the extension direction of the second mounting hole 160, thereby increasing the radial size range of the silicon carbide crystal rod set between the first positioning column 210 and the second positioning column 220.

[0052] Of course, in some other embodiments, the extension direction of the second mounting hole 160 may also form an angle with the extension direction of the first mounting hole 150 .

[0053] In detail, for the first mounting hole 150 and the second mounting hole 160 on the first fixing plate 110 or the first mounting hole 150 and the second mounting hole 160 on the second fixing plate 120, the second mounting hole 160 has a third end close to the first mounting hole 150 and a fourth end away from the first mounting hole 150, and in the direction from the third end to the fourth end, the second mounting hole 160 gradually moves away from the outer peripheral wall of the first chuck 300 or the outer peripheral wall of the second chuck 400, that is, when the second positioning column 220 moves on the second mounting hole 160 in the direction from the third end to the fourth end, the second positioning column 220 gradually moves away from the outer peripheral wall of the first chuck 300 and gradually moves away from the outer peripheral wall of the second chuck 400, so as to be able to adapt to silicon carbide crystal rods with different radial sizes.

[0054] In this embodiment, in order to facilitate the user to disassemble and assemble the first fixing plate 110 , the support plate 130 and the second fixing plate 120 , the first fixing plate 110 is detachably connected to the support plate 130 , and the second fixing plate 120 is also detachably connected to the support plate 130 .

[0055] Optionally, the first fixing plate 110 can be detachably connected to the support plate 130 via threaded fasteners 500 or the first fixing plate 110 and the support plate 130 can be snap-fitted. Similarly, the second fixing plate 120 can be detachably connected to the support plate 130 via threaded fasteners 500 or the second fixing plate 120 and the support plate 130 can be snap-fitted.

[0056] Of course, in some other embodiments, the first fixing plate 110 may also be welded to the support plate 130 , and the second fixing plate 120 may also be welded to the support plate 130 .

[0057] A side baffle plate 140 is also provided on one side of the support plate 130, and the side baffle plate 140 is connected to the support plate 130 at an angle. It should be noted that the support plate 130 is used to be placed on a horizontal plane to support the positioning assembly 200, the first chuck 300 and the second chuck 400. Since the side baffle plate 140 is provided and the side baffle plate 140 is provided on one side of the support plate 130, it is possible to reduce external debris from entering the bracket 100.

[0058] Optionally, in some embodiments, the side baffle 140 and the support plate 130 are an integral structure. Of course, in some other embodiments, the side baffle 140 and the support plate 130 can also be a split structure as long as the connection strength between the side baffle 140 and the support plate 130 can be guaranteed.

[0059] The side baffle 140 is provided with first positioning notches 141 and second positioning notches 142 arranged at intervals along the first direction, the first fixing plate 110 is disposed in the first positioning notches 141 and abuts against the side wall of the first positioning notches 141, and the second fixing plate 120 is disposed in the second positioning notches 142 and abuts against the side wall of the second positioning notches 142. It can be understood that the provision of the first positioning notches 141 and the second positioning notches 142 can improve the assembly efficiency of the first fixing plate 110 and the second fixing plate 120.

[0060] In detail, the first positioning notch 141 includes a first positioning wall 1411 and a second positioning wall 1412 connected at an angle, and the second positioning notch 142 includes a third positioning wall 1421 and a fourth positioning wall 1422 connected at an angle, the first positioning wall 1411 and the third positioning wall 1421 are arranged parallel and spaced apart in the first direction, the second positioning wall 1412 faces one side of the first fixed plate 110, and the fourth positioning wall 1422 faces one side of the second fixed plate 120.

[0061] In detail, one end face of the first fixing plate 110 close to the second fixing plate 120 abuts against the first positioning wall 1411, one side of the first fixing plate 110 close to the side baffle plate 140 abuts against the second positioning wall 1412, one end face of the second fixing plate 120 close to the first fixing plate 110 abuts against the third positioning wall 1421, and one side of the second fixing plate 120 close to the side baffle plate 140 abuts against the fourth positioning wall 1422.

[0062] Optionally, both ends of the first positioning column 210 are respectively connected to the first mounting holes 150 of the first fixing plate 110 and the second fixing plate 120 through threaded fasteners 500. In detail, both ends of the first positioning column 210 in the axial direction thereof are provided with studs passing through the first mounting holes 150. The threaded fasteners 500 may be nuts. Tightening the nuts and studs can fix the first positioning column 210 to the first fixing plate 110 and the second fixing plate 120, thereby preventing the first positioning column 210 from moving in the extension direction of the first mounting hole 150.

[0063] The two ends of the second positioning column 220 are respectively connected to the second mounting holes 160 of the first fixing plate 110 and the second fixing plate 120 through threaded fasteners 500. In detail, the second positioning column 220 is provided with studs passing through the second mounting holes 160 at both ends in its own axial direction. The threaded fasteners 500 can be nuts. Tightening the nuts and studs can fix the second positioning column 220 to the first fixing plate 110 and the second fixing plate 120, thereby preventing the second positioning column 220 from moving in the extension direction of the second mounting hole 160.

[0064] In summary, a crystal ingot positioning fixture 1 provided by an embodiment of the utility model includes a frame and a positioning assembly 200. The bracket 100 includes a support plate 130 and a first fixing plate 110 and a second fixing plate 120 spaced apart on the support plate 130 along a first direction, the first fixing plate 110 and the second fixing plate 120 are both provided with a first mounting hole 150 and a second mounting hole 160, the positioning assembly 200 includes a first positioning column 210 and a second positioning column 220, the two ends of the first positioning column 210 are respectively connected to the first mounting holes 150 of the first fixing plate 110 and the second fixing plate 120, the two ends of the second positioning column 220 are respectively connected to the second mounting holes 160 of the first fixing plate 110 and the second fixing plate 120, the first mounting hole 150 is a strip hole, the first positioning column 210 can move in the extension direction of the first mounting hole 150 to approach or move away from the second positioning column 220, so as to assist in clamping silicon carbide crystal ingots of different sizes, thereby improving the applicability of the crystal ingot positioning fixture 1.

[0065] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A crystal rod positioning fixture, characterized in that: include: A bracket (100), the bracket (100) comprising a support plate (130) and a first fixing plate (110) and a second fixing plate (120) arranged on the support plate (130) at intervals along a first direction, the first fixing plate (110) and the second fixing plate (120) both being provided with a first mounting hole (150) and a second mounting hole (160); A positioning assembly (200), the positioning assembly (200) comprising a first positioning column (210) and a second positioning column (220), the two ends of the first positioning column (210) being respectively connected to the first mounting holes (150) of the first fixing plate (110) and the second fixing plate (120), and the two ends of the second positioning column (220) being respectively connected to the second mounting holes (160) of the first fixing plate (110) and the second fixing plate (120); The first mounting holes (150) on the two first fixing plates (110) are opposite to the first mounting holes (150) on the second fixing plates (120), the second mounting holes (160) on the first fixing plates (110) are opposite to the second mounting holes (160) on the second fixing plates (120), the first mounting holes (150) are strip holes, and the first positioning columns (210) can move in the extension direction of the first mounting holes (150) to approach or move away from the second positioning columns (220).

2. The crystal rod positioning fixture according to claim 1, characterized in that: The second mounting hole (160) is also a strip-shaped hole, and the extension direction of the second mounting hole (160) is consistent with or forms an angle with the extension direction of the second mounting hole (160).

3. The crystal rod positioning fixture according to claim 2, characterized in that: An extending direction of the second mounting hole (160) is consistent with an extending direction of the first mounting hole (150).

4. The crystal ingot positioning fixture according to claim 1, characterized in that: The crystal rod positioning fixture also includes a first chuck (300) and a second chuck (400), wherein the first chuck (300) is arranged on the first fixing plate (110), and the second chuck (400) is arranged on the second fixing plate (120), and the first chuck (300) and the second chuck (400) can move closer to or farther away from each other to clamp or release the silicon carbide crystal rod, and the first chuck (300) and the second chuck (400) are located between the first positioning column (210) and the second positioning column (220).

5. The crystal ingot positioning fixture according to claim 4, characterized in that: The first fixing plate (110) is provided with a first matching hole (111) connected to the outer peripheral wall of the first clamping head (300), the axial direction of the first matching hole (111) is parallel to the first direction, and the first clamping head (300) can move along the first direction relative to the first matching hole (111).

6. The crystal ingot positioning fixture according to claim 4, characterized in that: The second fixing plate (120) is provided with a second matching hole (121) connected to the outer peripheral wall of the second chuck (400), the axial direction of the second matching hole (121) is parallel to the first direction, and the second chuck (400) can move along the first direction relative to the second matching hole (121).

7. The crystal ingot positioning fixture according to claim 1, characterized in that: The first fixing plate (110) is detachably connected to the support plate (130), and / or the second fixing plate (120) is detachably connected to the support plate (130).

8. The crystal ingot positioning fixture according to claim 1, characterized in that: A side baffle (140) is further provided on one side of the support plate (130), and the side baffle (140) is connected to the support plate (130) at an angle.

9. The crystal ingot positioning fixture according to claim 8, characterized in that: The side baffle (140) is provided with a first positioning notch (141) and a second positioning notch (142) arranged at intervals along a first direction; the first fixing plate (110) is arranged in the first positioning notch (141) and abuts against a side wall of the first positioning notch (141); the second fixing plate (120) is arranged in the second positioning notch (142) and abuts against a side wall of the second positioning notch (142).

10. The crystal ingot positioning fixture according to claim 1, characterized in that: The two ends of the first positioning column (210) are connected to the first mounting holes (150) of the first fixing plate (110) and the second fixing plate (120) respectively through threaded fasteners (500), and the two ends of the second positioning column (220) are connected to the second mounting holes (160) of the first fixing plate (110) and the second fixing plate (120) respectively through threaded fasteners (500).

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