A device and method for dividing zinc sulfide ball cover blank

Abstract

The present invention relates to the technical field of cutting devices, and discloses a device and method for dividing a zinc sulfide ball cover blank. The device for dividing the zinc sulfide ball cover blank comprises a cutting assembly and a positioning tool; the cutting assembly comprises a workbench and a cutting tool; the positioning tool comprises a positioning seat and a pressing member, the positioning seat is provided with a positioning groove, the positioning seat is provided with a cutting groove, the cutting groove is connected to the positioning groove and is arranged around the outer periphery of the positioning groove, and the cutting groove passes through the top side and left and right sides of the positioning seat; the pressing member is arranged on the front side of the positioning seat, and the pressing member can abut against the flat plate of the zinc sulfide ball cover blank. The device and method for dividing the zinc sulfide ball cover blank using the technical solution of the present invention can improve the integrity of the divided zinc sulfide ball cover, without chipping at the cutting position, ensuring that the total thickness of the cut zinc sulfide ball cover can meet the processing requirements, and at the same time can ensure the consistency of the processing, facilitate subsequent processing, and improve processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting devices, and in particular to a device and method for cutting a zinc sulfide spherical cover blank. Background Art

[0002] Optical systems such as infrared imaging and infrared guidance are becoming increasingly important on the modern battlefield. The fairing is a critical component. The fairing material needs to be transparent in the infrared region, strong and durable, highly resistant to environmental stress corrosion and thermal shock during rapid acceleration and deceleration, and able to maximize the transmission of radiation from the target. Zinc sulfide (ZnS) is a high-purity material with strong environmental adaptability, easy processing, low light transmission loss, and good light transmittance. Therefore, ZnS domes are the preferred fairing material. ZnS domes are divided into native ZnS domes and multispectral ZnS domes. The native ZnS domes are transformed into multispectral ZnS domes after hot isostatic pressing.

[0003] The primary zinc sulfide dome is grown using the CVD method. During the growth process, a dome mold is placed in the deposition chamber of the CVD furnace. The mold consists of a concave and convex molds, which are used in a coordinated manner. After the primary zinc sulfide is grown, it is interconnected. The dome blank consists of connected spheres and a flat plate extending outward from the outside of the dome, forming a hat shape. The excess flat plate needs to be cut off.

[0004] Therefore, how to cut out a complete dome cover that meets the processing thickness becomes a problem that needs to be solved. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for dividing a zinc sulfide ball cover blank. The device and method for dividing the zinc sulfide ball cover blank can improve the integrity of the divided zinc sulfide ball cover, prevent the edges of the cut parts from chipping, ensure that the total thickness of the cut zinc sulfide ball cover meets the processing requirements, and at the same time ensure the consistency of the processing, facilitate subsequent processing, and improve processing efficiency.

[0006] In order to achieve the above-mentioned object, the present invention provides a device for dividing a zinc sulfide ball cover blank, wherein the zinc sulfide ball cover blank comprises a connected spherical body and a flat plate, and the device for dividing the zinc sulfide ball cover blank comprises a cutting assembly and a positioning tool;

[0007] The cutting assembly includes a workbench and a cutting tool;

[0008] The positioning fixture is installed on the workbench, and the positioning fixture includes a positioning seat and a pressing piece. The front side of the positioning seat is provided with a positioning groove adapted to the spherical body of the zinc sulfide ball cover blank. The positioning seat is provided with a cutting groove, which is connected to the positioning groove and is arranged around the outer periphery of the positioning groove. The cutting groove runs through the top side and left and right sides of the positioning seat, and the cutting tool can reciprocate in the vertical direction in the cutting groove.

[0009] The pressing member is arranged on the front side of the positioning seat, and the pressing member can abut against the flat plate of the zinc sulfide ball cover blank to achieve positioning of the zinc sulfide ball cover.

[0010] In some embodiments of the present application, the positioning tool further includes a mounting plate, which can be snapped onto the workbench, and the positioning seat and the pressing member can be detachably mounted on the mounting plate.

[0011] In some embodiments of the present application, the clamping member includes an abutment plate and a connecting plate, the abutment plate is vertically connected to the connecting plate, and the connecting plate is provided with at least one elongated hole, through which a screw passes to be screwed to the mounting plate.

[0012] In some embodiments of the present application, the radius of the positioning groove is not less than the radius of the spherical body of the zinc sulfide ball cover blank, and the arrow height of the positioning groove is greater than the height of the spherical body of the zinc sulfide ball cover blank.

[0013] In some embodiments of the present application, the height and the width of the positioning seat are both greater than the maximum external dimension of the zinc sulfide ball cover blank.

[0014] In some embodiments of the present application, the positioning seat includes a positioning portion and connecting portions arranged on the left and right sides of the positioning portion, the positioning groove is arranged on the positioning portion, the two connecting portions are both extended outward from the bottom of the positioning portion, and both connecting portions are provided with at least one screw connecting hole, and the screw passes through the screw connecting hole and is screwed to the mounting plate.

[0015] In some embodiments of the present application, the positioning seat and the pressing member are both made of aluminum.

[0016] In some embodiments of the present application, the cutting assembly includes a cutting wire, which is adapted to the cutting groove and can reciprocate in the vertical direction within the cutting groove.

[0017] In some embodiments of the present application, the cutting wire is made of diamond.

[0018] Based on the same purpose, the present application also provides a method for dividing a zinc sulfide ball cover blank, comprising the following steps:

[0019] S1. Fix the positioning seat on the mounting plate, and clamp the mounting plate on the working table of the cutting assembly;

[0020] S2. Install the pressing plate so that it contacts the mounting plate and fixes it on the workbench.

[0021] S3. Install the spherical body of the zinc sulfide ball cover blank in the positioning groove of the positioning seat, and adjust the position of the pressing member on the mounting plate so that the pressing member abuts against the flat plate of the zinc sulfide ball cover blank;

[0022] S4. Adjust the position of the workbench so that the cutting line of the cutting assembly is aligned with the cutting groove on the positioning seat, and start the equipment to cut along the cutting groove using the cutting line.

[0023] S5. After cutting is completed, remove the pressing piece and take off the ball cover. The cutting is completed.

[0024] The present invention provides a device and method for dividing a zinc sulfide dome blank. Compared with the prior art, the present invention has the following advantages:

[0025] The zinc sulfide ball cover blank segmentation device and segmentation method of the embodiment of the present invention are provided by setting a positioning tool, the positioning tool includes a positioning seat, the front side of the positioning seat is provided with a positioning groove adapted to the spherical body of the zinc sulfide ball cover blank, the clamping piece can abut the front side of the flat plate of the zinc sulfide ball cover blank, thereby achieving the positioning of the zinc sulfide ball cover blank, the positioning seat is provided with a cutting groove that passes through the top of the positioning seat and the left and right sides of the positioning seat, the cutting tool moves from top to bottom through the cutting groove, thereby being able to separate the spherical body and the flat plate of the zinc sulfide ball cover blank, thereby obtaining the zinc sulfide ball cover, thereby ensuring that the cut zinc sulfide ball cover is complete and there is no edge chipping, thereby improving the yield of the zinc sulfide ball cover, further facilitating subsequent processing, and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 2. It is a structural schematic diagram of the cutting state of the segmentation device of the zinc sulfide ball cover blank according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of a device for dividing a zinc sulfide dome blank according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic structural diagram of a positioning seat according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic structural diagram of a pressing member according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic structural diagram of a mounting plate according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic structural diagram of a zinc sulfide ball cover blank according to an embodiment of the present invention;

[0032] In the figure, 100, positioning tool, 110, mounting plate, 111, first screw hole, 112, second screw hole, 120, positioning seat, 121, positioning part, 122, cutting groove, 123, positioning groove, 124, connecting part, 125, screw connecting hole, 126, grabbing groove, 130, pressing part, 131, connecting plate, 132, abutting plate, 133, long hole, 140, screw, 150, zinc sulfide ball cover blank, 151, flat plate, 152, spherical body. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0034] It should be understood that, while the present invention uses terms such as "first" and "second" to describe various types of information, such information should not be limited to these terms; these terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] It should be noted that, unless there is a conflict, the embodiments of the present invention and the features therein can be combined with each other. The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments. The step numbers in the embodiments of the present invention are provided for ease of explanation only and do not limit the order of the steps. The order of execution of the steps in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0037] like Figures 1 to 6 As shown, a device for dividing a zinc sulfide ball cover blank according to a preferred embodiment of the present invention is as follows: Figure 6 As shown, the zinc sulfide ball cover blank 150 includes a connected spherical body 152 and a flat plate 151. The dividing device of the zinc sulfide ball cover blank includes a cutting assembly (not shown in the figure) and a positioning tool 100. The cutting assembly includes a workbench (not shown in the figure) and a cutting tool (not shown in the figure).

[0038] like Figure 1 and Figure 2 As shown, the positioning tool 100 includes a positioning seat 120 and a clamping member 130. The front side of the positioning seat 120 is provided with a positioning groove 123 that is compatible with the spherical body 152 of the zinc sulfide ball cover blank 150. A cutting groove 122 is opened on the positioning seat 120. The cutting groove 122 is connected to the positioning groove 123 and is arranged around the outer periphery of the positioning groove 123. The cutting groove 122 runs through the top side and the left and right sides of the positioning seat 120. The cutting tool can reciprocate in the vertical direction in the cutting groove 122, thereby separating the spherical body 152 and the flat plate 151. The clamping member 130 is arranged on the front side of the positioning seat 120, and the clamping member 130 can abut against the flat plate 151 of the zinc sulfide ball cover blank 150 to achieve positioning of the zinc sulfide ball cover.

[0039] Based on the above technical solution, a positioning tool 100 is set, and the positioning tool 100 includes a positioning seat 120. The front side of the positioning seat 120 is provided with a positioning groove 123 that is compatible with the spherical body 152 of the zinc sulfide ball cover blank 150. The pressing piece 130 can abut the front side of the flat plate 151 of the zinc sulfide ball cover blank 150, thereby realizing the positioning of the zinc sulfide ball cover blank 150. The positioning seat 120 is provided with a cutting groove 122 that passes through the top of the positioning seat 120 and the left and right sides of the positioning seat 120. The cutting tool moves from top to bottom through the cutting groove 122, thereby being able to separate the spherical body 152 and the flat plate 151 of the zinc sulfide ball cover blank 150, thereby obtaining the zinc sulfide ball cover, thereby ensuring that the cut zinc sulfide ball cover is complete and there is no edge chipping, thereby improving the yield of the zinc sulfide ball cover, further facilitating subsequent processing, and improving processing efficiency.

[0040] In some embodiments of the present application, the positioning tool 100 further includes a mounting plate 110, and the cutting assembly includes a workbench (not shown). The mounting plate 110 can be snapped onto the workbench, and the positioning seat 120 and the pressing member 130 can be detachably mounted on the mounting plate 110. The provision of the mounting plate 110 facilitates the installation and removal of the positioning tool 100. Furthermore, multiple mounting plates 110 can be installed on the workbench to achieve batch cutting and improve processing efficiency.

[0041] In some embodiments of the present application, the positioning seat 120 and the clamping member 130 are both connected to the mounting plate 110 by screws 140, and the positioning seat 120 and the clamping member 130 are installed on the mounting plate 110 using screws 140, thereby facilitating the disassembly and installation of the positioning seat 120 and the clamping member 130.

[0042] In some embodiments of the present application, the pressing member 130 includes an abutment plate 132 and a connecting plate 131. The abutment plate 132 is vertically connected to the connecting plate 131. The connecting plate 131 is provided with at least one elongated hole 133, through which a screw 140 passes to be screwed into a second screw hole 112 on the mounting plate 110. The provision of the elongated hole 133 facilitates adjustment of the mounting position of the pressing member 130 on the mounting plate 110, thereby adapting to the cutting requirements of zinc sulfide dome blanks 150 of varying thicknesses.

[0043] In some embodiments of the present application, two elongated holes 133 are provided in parallel on the connecting plate 131. The provision of the two elongated holes 133 makes the positioning of the clamping member 130 on the mounting plate 110 more reliable, further ensuring that the zinc sulfide ball cover blank 150 will not move during the cutting process, thereby ensuring better cutting quality.

[0044] In some embodiments of the present application, the radius of the positioning groove 123 is not less than the radius of the spherical body 152 of the zinc sulfide spherical cover blank 150, and the elevation of the positioning groove 123 is greater than the height of the spherical body of the zinc sulfide spherical cover blank. In some embodiments of the present application, the height and width of the positioning seat 120 are both greater than the maximum outer dimension of the zinc sulfide spherical cover blank. Specifically, the positioning tool 100 is processed according to the size and total thickness of the ball cover as needed. The radius of the positioning groove 123 is equal to or greater than the radius of the spherical body 152 of the ball cover by 1mm-5mm. The outer dimension of the surface where the positioning tool 100 abuts the flat plate 151 is greater than the external dimension of the flat plate 151 by 1mm-3mm. The arrow height of the positioning groove 123 of the positioning tool 100 (that is, the height from the arch top to the arch foot of the concave surface of the positioning groove 123) is greater than the height of the ball cover. The positioning groove 123 is fully compatible with the spherical body 152, and the positioning seat 120 is compatible with the flat plate 151, thereby ensuring that the zinc sulfide ball cover blank 150 can be fully positioned, and the zinc sulfide ball cover obtained after cutting can be in the positioning groove 123.

[0045] In some embodiments of the present application, the positioning seat 120 includes a positioning portion 121 and a connecting portion 124 arranged on the left and right sides of the positioning portion 121, the positioning groove 123 is arranged on the positioning portion 121, and the two connecting portions 124 are both extended outward from the bottom of the positioning portion 121, and both connecting portions 124 are provided with at least one screw connecting hole 125, and the screw 140 passes through the screw connecting hole 125 and is screwed to the first screw hole 111 on the mounting plate 110.

[0046] In some embodiments of the present application, two screw connection holes 125 are provided on the two connection parts 124, thereby ensuring that the positioning seat 120 is reliably positioned after installation on the mounting plate 110, and further ensuring that the zinc sulfide ball cover blank 150 will not move during the cutting process, thereby ensuring better cutting quality.

[0047] In some embodiments of the present application, a grabbing groove 126 is provided between the two connecting portions 124 , and the operator can hold his hands on the grabbing groove 126 and the top of the positioning portion 121 to facilitate the installation and removal of the positioning seat 120 .

[0048] In some embodiments of the present application, the positioning seat 120 and the pressing member 130 are both made of aluminum, which is a metal material that is easy to process and not easy to deform, thereby ensuring that the positioning tool 100 is easy to manufacture, and the positioning seat 120 and the pressing member 130 are not easy to deform after processing, thereby extending the life of the positioning tool 100.

[0049] In some embodiments of the present application, the cutting assembly includes a cutting wire (not shown). The width of the cutting groove 122 is slightly larger than the outer diameter of the cutting wire. The cutting wire is adapted to the cutting groove 122 and can reciprocate vertically within the cutting groove 122 to complete the cutting motion. When the cutting wire is used for cutting, there is an elastic buffer when the cutting wire contacts the zinc sulfide ball cover blank 150, which prevents the zinc sulfide ball cover blank 150 from cracking. This ensures that the cut zinc sulfide ball cover is complete and has no edge chipping, thereby improving the yield rate of the zinc sulfide ball cover, further facilitating subsequent processing, and improving processing efficiency.

[0050] In some embodiments of the present application, the mounting plate 110 is a graphite plate. In some embodiments of the present application, the cutting assembly is a single-wire cutting device that uses a diamond wire for cutting.

[0051] It should be noted that the cutting tool in this application is a cutting wire. Alternatively, the cutting tool can be a laser cutting device and a cutting knife that can be used by technical personnel in this field. The use of diamond wire is the preferred option, so this option is described in detail here. Technical personnel in this field can choose other types of cutting tools according to their needs.

[0052] Based on the same purpose, the present application also provides a method for dividing a zinc sulfide ball cover blank, comprising the following steps:

[0053] S1. Fix the positioning seat 120 on the mounting plate 110, and clamp the mounting plate 110 on the rotating workbench of the single-wire cutting machine;

[0054] S2. Install the pressing plate so that it contacts the mounting plate 110 and fix the pressing plate on the rotating workbench using the adjusting screws 140 to ensure that the mounting plate 110 is fixed on the rotating workbench and does not shift.

[0055] S3. Install the spherical body 152 of the zinc sulfide ball cover blank 150 into the positioning groove 123 of the positioning seat 120, and adjust the position of the pressing member 130 on the mounting plate 110 so that the pressing member 130 abuts against the flat plate 151 of the zinc sulfide ball cover blank 150;

[0056] S4. Adjust the rotary table of the single-wire cutting machine so that the cutting line of the cutting assembly is aligned with the cutting groove 122 on the positioning seat 120, and start the machine to cut along the cutting groove 122 using the cutting line.

[0057] S5. After the cutting is completed, the pressing member 130 is removed and the ball cover is taken off. The cutting is completed and the next ball cover can be directly placed for processing.

[0058] The working process of the present invention is as follows: a positioning fixture is manufactured according to the size of a zinc sulfide spherical cover blank 150, and the processed positioning fixture 100 is bolted to the rotating worktable of a single-wire cutting machine; the zinc sulfide spherical cover blank 150 to be cut is placed into the positioning fixture 100, and the zinc sulfide spherical cover blank 150 is supported by a clamping member 130. The working platform of the single-wire cutting machine is adjusted to be parallel to the wire groove of the fixture, and the equipment is started for cutting. After cutting is completed, the clamping member 130 is removed and the zinc sulfide spherical cover is directly removed. After cutting is completed, the next spherical cover can be directly placed for processing. Using this method to cut the zinc sulfide spherical cover can ensure the integrity of the spherical cover, prevent edge chipping, ensure that the total thickness of the cut zinc sulfide spherical cover meets processing requirements, and simultaneously ensure processing consistency, facilitate subsequent processing, and improve processing efficiency.

[0059] In summary, the embodiment of the present invention provides a device and method for dividing a zinc sulfide ball cover blank. The device and method for dividing a zinc sulfide ball cover blank are provided by setting a positioning tool 100. The positioning tool 100 includes a positioning seat 120. The front side of the positioning seat 120 is provided with a positioning groove 123 adapted to the spherical body 152 of the zinc sulfide ball cover blank 150. The pressing member 130 can abut against the front side of the flat plate 151 of the zinc sulfide ball cover blank 150, thereby achieving the positioning of the zinc sulfide ball cover blank 150. The positioning seat 120 is provided with a positioning groove 123 that penetrates the top of the positioning seat 120. The cutting grooves 122 on the left and right sides of the positioning seat 120 are provided. The cutting tool moves from the cutting grooves 122 from top to bottom, thereby separating the spherical body 152 and the flat plate 151 of the zinc sulfide ball cover blank 150, thereby obtaining the zinc sulfide ball cover. The cutting is performed using a cutting wire. When the cutting wire contacts the zinc sulfide ball cover blank 150, there is elastic buffering, which does not cause the zinc sulfide ball cover blank 150 to crack, thereby ensuring that the cut zinc sulfide ball cover is complete without edge chipping, thereby improving the yield rate of the zinc sulfide ball cover, further facilitating subsequent processing, and improving processing efficiency.

[0060] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "transverse", "longitudinal", "X-axis direction", "Y-axis direction", "Z-axis direction" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for dividing a zinc sulfide ball cover blank, comprising dividing the zinc sulfide ball cover blank using a zinc sulfide ball cover blank dividing device, wherein the zinc sulfide ball cover blank comprises a connected spherical body and a flat plate, wherein: The device for dividing the zinc sulfide ball cover blank includes a cutting component and a positioning tool; The cutting assembly includes a workbench and a cutting tool; The positioning fixture is installed on the workbench, and the positioning fixture includes a positioning seat and a pressing piece. The front side of the positioning seat is provided with a positioning groove adapted to the spherical body of the zinc sulfide ball cover blank. The positioning seat is provided with a cutting groove, which is connected to the positioning groove and is arranged around the outer periphery of the positioning groove. The cutting groove runs through the top side and left and right sides of the positioning seat, and the cutting tool can reciprocate in the vertical direction in the cutting groove. The pressing member is arranged at the front side of the positioning seat, and the pressing member can abut against the flat plate of the zinc sulfide ball cover blank to achieve positioning of the zinc sulfide ball cover; The segmentation method comprises the following steps: S1. Fix the positioning seat on the mounting plate, and clamp the mounting plate on the working table of the cutting assembly; S2. Install the pressing plate so that it contacts the mounting plate and fixes it on the workbench. S3. Install the spherical body of the zinc sulfide ball cover blank in the positioning groove of the positioning seat, and adjust the position of the pressing member on the mounting plate so that the pressing member abuts against the flat plate of the zinc sulfide ball cover blank; S4. Adjust the position of the workbench so that the cutting line of the cutting assembly is aligned with the cutting groove on the positioning seat, and start the equipment to cut along the cutting groove using the cutting line. S5. After cutting is completed, remove the pressing piece and take off the ball cover. The cutting is completed.

2. The method for dividing the zinc sulfide dome blank according to claim 1, characterized in that: The positioning fixture further comprises a mounting plate, which can be clamped on the workbench, and the positioning seat and the pressing member can be detachably mounted on the mounting plate.

3. The method for dividing the zinc sulfide dome blank according to claim 2, characterized in that: The pressing member includes an abutment plate and a connecting plate, wherein the abutment plate is vertically connected to the connecting plate, and the connecting plate is provided with at least one elongated hole, through which a screw passes to be screwed to the mounting plate.

4. The method for dividing the zinc sulfide dome blank according to claim 1, characterized in that: The radius of the positioning groove is not less than the radius of the spherical body of the zinc sulfide ball cover blank, and the arrow height of the positioning groove is greater than the height of the spherical body of the zinc sulfide ball cover blank.

5. The method for dividing the zinc sulfide dome blank according to claim 1, characterized in that: The height and width of the positioning seat are both greater than the maximum external dimension of the zinc sulfide ball cover blank.

6. The method for dividing the zinc sulfide dome blank according to claim 5, characterized in that: The positioning seat includes a positioning portion and connecting portions arranged on the left and right sides of the positioning portion, the positioning groove is arranged on the positioning portion, the two connecting portions are both extended outward from the bottom of the positioning portion, and the two connecting portions are both provided with at least one screw connecting hole, and the screw passes through the screw connecting hole and is screwed to the mounting plate.

7. The method for dividing the zinc sulfide dome blank according to claim 1, characterized in that: The positioning seat and the pressing member are both made of aluminum.

8. The method for dividing the zinc sulfide dome blank according to claim 1, characterized in that: The cutting assembly includes a cutting wire, which is adapted to the cutting groove and can reciprocate in the cutting groove along a vertical direction.

9. The method for dividing the zinc sulfide dome blank according to claim 8, characterized in that: The cutting wire is made of diamond material.

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