Ball socket fixing tool

Abstract

A spherical cover fixing fixture includes a top cover, a positioning plate, and a base. The top cover is used to accommodate the top of the spherical cover to be plated with a conductive ring, and has a hollow space extending axially. The positioning plate is placed inside the top of the spherical cover to be plated with the conductive ring, and has a through hole extending axially through the positioning plate so that the space enclosed by the inner spherical surface of the top of the spherical cover communicates with the hollow space of the annular portion. The base is used to support the spherical cover to be plated with the conductive ring from below. The positioning plate and the base can be detachably fixed together, thereby fixing the spherical cover to be plated with the conductive ring, thus forming a plating gap that exposes a portion of the inner spherical surface at the top of the spherical cover and is used to form the conductive ring by plating. The spherical cover fixing fixture disclosed herein can improve the stability and accuracy of setting the conductive ring inside the spherical cover.

Description

Technical Field

[0001] This disclosure relates to the field of ball covers, and more specifically to a ball cover fixing fixture. Background Technology

[0002] Zinc sulfide domes are high-performance broadband optoelectronic window materials, exhibiting good transmittance and low absorption coefficient in the visible light range of 0.4μm to far-infrared 12μm. They have been widely used in high-performance optoelectronic radar, infrared detector windows, and missile fairings.

[0003] Zinc sulfide domes are essential materials for missile fairings. The inner side of the dome needs to be fitted with conductive rings for signal conversion. Traditionally, these conductive rings are manufactured by adhesively attaching electrode plates. However, this method suffers from poor stability and precision in the electrode attachment process. Summary of the Invention

[0004] In view of the problems existing in the background art, the purpose of this disclosure is to provide a spherical cover fixing fixture that can improve the stability and accuracy of setting a conductive ring inside the spherical cover.

[0005] Thus, a spherical cover fixing fixture includes a top cover, a positioning plate, and a base; the top cover is used to accommodate the top of the spherical cover to be plated with a conductive ring, and the top cover has a hollow space that extends axially; the positioning plate is used to be placed inside the top of the spherical cover to be plated with a conductive ring, and the positioning plate has a through hole that extends axially through the positioning plate so that the space enclosed by the inner spherical surface of the top of the spherical cover communicates with the hollow space of the annular portion; the base is used to support the spherical cover to be plated with a conductive ring from below; the positioning plate can be detachably fixed to the top cover and the base can be detachably fixed to the top cover to fix the spherical cover to be plated with a conductive ring, thereby forming a plating gap that exposes a portion of the inner spherical surface at the top of the spherical cover and is used to form a conductive ring by plating.

[0006] The beneficial effects of this disclosure are as follows.

[0007] In the spherical cover fixing fixture disclosed herein, the detachable assembly of the top cover, positioning plate, and base allows the spherical cover to be fixed and form a coating gap for forming a conductive ring through film deposition. This allows a vacuum sputtering coating machine to deposit film into the coating gap, thereby forming a conductive ring on the inner spherical surface at the top of the spherical cover. In other words, the spherical cover fixing fixture of this disclosure improves the stability and accuracy of setting the conductive ring inside the spherical cover.

[0008] In the spherical cover fixing fixture of this disclosure, the space enclosed by the inner spherical surface of the top of the spherical cover is connected to the hollow space of the annular portion through the through hole. This ensures that the pressure on opposite sides of the positioning plate is the same, thus maintaining the same pressure on opposite sides of the positioning plate in the gas / air environment required for subsequent coating operations. This prevents the positioning plate from elastically deforming due to the gas / air environment required for coating operations, thereby ensuring the stability and accuracy of the coating gap used to form the conductive ring and the size, shape, and position of the formed conductive ring. It avoids the instability in the size, shape, and position of the coating gap caused by elastic deformation of the positioning plate 2, which leads to reduced accuracy of the conductive ring and defects such as shadows on the conductive ring (i.e., the formed conductive ring will have excess burrs near the edge of the positioning plate). In other words, the spherical cover fixing fixture of this disclosure improves the stability and accuracy of setting the conductive ring inside the spherical cover. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a vacuum sputtering coating machine according to the present disclosure.

[0010] Figure 2 This is an assembly perspective view of the spherical cover fixing fixture according to this disclosure.

[0011] Figure 3 yes Figure 2 A three-dimensional image viewed from another angle.

[0012] Figure 4 This is a partial exploded 3D view of the spherical cover fixing fixture.

[0013] Figure 5 This is a fully exploded 3D view of the spherical cover fixing fixture.

[0014] Figure 6 yes Figure 5 A three-dimensional exploded view from another angle.

[0015] Figure 7 yes Figure 5 A three-dimensional exploded view from another angle

[0016] Figure 8 This is a top view of the positioning plate of the spherical cover fixing fixture.

[0017] Figure 9 This is a three-dimensional sectional view of the spherical cover fixing fixture.

[0018] Figure 10 yes Figure 9 A three-dimensional cross-section viewed from another angle.

[0019] Figure 11 This is a schematic diagram of a spherical cover that forms a conductive ring.

[0020] Figure 12 This is a photo of the coating deposited inside the dome.

[0021] The reference numerals in the attached figures are explained as follows:

[0022] 100 vacuum sputtering coating machine 251 perforation

[0023] 200 spherical cover fixing fixture with 26 protrusions

[0024] D-axis 27 downward chamfer

[0025] 1. Top cover with chamfered corners (28)

[0026] 11. Annular G Coating Gap

[0027] 111 Reception Slots 3 Bases

[0028] 111a Inner circumferential surface 31 flange

[0029] 111b outer peripheral surface 311 lower threaded hole

[0030] 111c Top Surface 32 Seats

[0031] 112 Inner circumferential surface 321 Support surface

[0032] 112a bottom perimeter 322 via

[0033] 113 Plane 4 Positioning Components

[0034] 114 Annular Groove 5 Centering Screw

[0035] 115 threaded hole 6 fixing screw

[0036] 116 Handhold Slot 300 Ball Cover

[0037] S Hollow Space 300a Top

[0038] 12 protrusions 300b inner spherical surface

[0039] 121 First positioning hole 300c outer spherical surface

[0040] 122 First centering screw hole 300d top surface

[0041] 2 positioning plates 400 sputtering target

[0042] 21 through-hole 400a2 sputtering surface

[0043] 22 outer perimeter 400b axis

[0044] 23 Second positioning hole 500 conductive ring

[0045] 24 Second centering screw hole 500b coated disc

[0046] 25 Main body Detailed Implementation

[0047] The accompanying drawings illustrate embodiments of this disclosure, and it will be understood that the disclosed embodiments are merely examples of this disclosure, which can be implemented in various forms. Therefore, the specific details disclosed herein should not be construed as limiting, but are intended only as the basis for the claims and as an illustrative basis to teach those skilled in the art how to implement this disclosure in various ways.

[0048] Reference Figures 1 to 12 The ball cover fixing fixture 200 includes an upper cover 1, a positioning plate 2, and a base 3.

[0049] The top cover 1 is used to accommodate the top 300a of the spherical cover 300 to be plated with a conductive ring. The top cover 1 has a hollow space S extending along the axial direction D. The positioning plate 2 is used to be placed inside the top 300a of the spherical cover 300 to be plated with a conductive ring. The positioning plate 2 has a through hole 21 that extends along the axial direction D through the positioning plate 2 so that the space enclosed by the inner spherical surface 300b of the top 300a of the spherical cover 300 communicates with the hollow space S of the annular portion 11. The base 3 is used to support the top 300a of the spherical cover 300 to be plated with a conductive ring from below. The positioning plate 2 and the base 3 can be detachably fixed together with the top cover 1, thereby fixing the spherical cover 300 to be plated with a conductive ring, thus forming a plating gap G that exposes a portion of the inner spherical surface 300b at the top 300a of the spherical cover 300 and is used to form the conductive ring 500 by plating.

[0050] In the spherical cover fixing fixture 200 disclosed herein, the spherical cover 300 can be fixed and a coating gap G for forming a conductive ring 500 by means of the detachable and detachable engagement of the upper cover 1, the positioning plate 2, and the base 3, thereby enabling the supply of materials such as... Figure 1 The vacuum sputtering coating machine 100 shown coats the coating gap G, thereby forming a conductive ring 500 on the inner spherical surface 300b at the top 300a of the dome 300. In other words, the dome fixing fixture of this disclosure can improve the stability and accuracy of setting the conductive ring inside the dome.

[0051] In the ball cover fixing fixture 200 disclosed herein, the positioning plate 2 can be detachably fixed to the upper cover 1 and the base 3 can be detachably fixed to the upper cover 1, which can conveniently realize the fixed assembly of the ball cover 300 before coating and the disassembly after coating.

[0052] In the spherical cover fixing fixture 200 disclosed herein, the space enclosed by the inner spherical surface 300b of the top 300a of the spherical cover 300 is connected to the hollow space S of the annular portion 11 through the through hole 21. This allows the pressure on opposite sides of the axial direction D of the positioning plate 2 to be the same. This ensures that the spherical cover 300 maintains the pressure on opposite sides of the axial direction D of the positioning plate 2 in the gas / air environment required for subsequent coating operations. The positioning plate 2 will not be elastically deformed due to the influence of the gas / air environment required for the coating operation. This ensures the stability and accuracy of the coating gap G used to form the conductive ring 500 and the size, shape, and position of the formed conductive ring 500. It avoids the reduction in accuracy of the conductive ring 500 and the presence of shadow defects in the conductive ring 500 (i.e., the formed conductive ring 500 will have excess burrs near the edge of the positioning plate 2) caused by the instability of the size, shape, and position of the coating gap G due to the elastic deformation of the positioning plate 2. In other words, the spherical cover fixing fixture 200 disclosed herein can improve the stability and accuracy of setting the conductive ring 500 inside the spherical cover 300.

[0053] In the spherical cover fixing fixture 200 of this disclosure, after the conductive ring 500 is formed by coating, since the space enclosed by the inner spherical surface 300b of the top 300a of the spherical cover 300 and the hollow space S of the annular portion 11 are connected through the through hole 21, the spherical cover 300 can be easily and effortlessly removed from the positioning plate 2 when disassembling the spherical cover 300, without damaging the coated spherical cover 300 or the positioning plate 2. If the positioning plate 2 does not have the through hole 21, the spherical cover 300 is easily attracted to the positioning plate 2, making the disassembly of the positioning plate 2 more difficult and posing a risk of damaging the coated spherical cover 300 or the positioning plate 2. The diameter of the through hole 21 can be, for example, 1-2 mm.

[0054] In the spherical cover fixing fixture 200 disclosed herein, after the conductive ring 500 is formed by coating, the conductive wire (not shown) can be directly welded and fixed to the conductive ring 500 without disassembling the spherical cover 300. This shortens the time required for the spherical cover 300 with the conductive ring 500 to be used as a fairing, and facilitates the seamless connection between the coating process and the fairing preparation.

[0055] Reference Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10In one example, the top cover 1 has an annular portion 11 and a protrusion 12. The annular portion 11 has a receiving groove 111 and an inner peripheral surface 112. The receiving groove 111 is used to receive the top 300a of the spherical cover 300 to be plated with a conductive ring. The receiving groove 111 has an annular inner peripheral surface 111a, which is used to fit the inner spherical surface 300b of the top 300a of the spherical cover 300 to be plated with a conductive ring received in the receiving groove 111. The inner peripheral surface 112 forms a hollow space S that extends along the axial direction D. The inner peripheral surface 112 has a bottom periphery 112a. The protrusion 12 protrudes inward from the inner peripheral surface 112 of the annular portion 11 and can be detachably fixed to the positioning plate 2. The positioning plate 2 also has an outer periphery 22. The outer periphery 22 is used to: abut against the corresponding inner spherical surface 300b of the top 300a of the spherical cover 300 to be plated with the conductive ring, and to be spaced axially D from the bottom periphery 112a of the inner circumferential surface 112 of the annular portion 11 to form a plating gap G between the outer periphery 22 and the bottom periphery 112a of the inner circumferential surface 112 of the annular portion 11, which exposes a portion of the inner spherical surface 300b at the top 300a of the spherical cover 300 and is used to form the conductive ring 500 by plating.

[0056] In this example, during assembly, the positioning plate 2 is first placed below the upper cover 1 along the axial direction D. Then, the protrusion 12 of the upper cover 1 is fixed to the positioning plate 2. Next, the top 300a of the ball cover 300 to be plated with the conductive ring is inserted into the receiving groove 111 of the upper cover 1. The inner peripheral surface 111a of the receiving groove 111 fits against the inner spherical surface 300b of the top 300a of the ball cover 300 to be plated with the conductive ring, which is received in the receiving groove 111. The outer periphery 22 of the positioning plate 2 corresponds to the inner spherical surface 300b of the top 300a of the ball cover 300 to be plated with the conductive ring. The outer periphery 22 of the positioning plate 2 and the bottom periphery 112a of the inner peripheral surface 112 of the annular portion 11 are spaced apart along the axial direction D to form a portion of the inner spherical surface 300b exposed at the top 300a of the inner spherical surface 300b of the spherical cover 300 between the outer periphery 22 and the bottom periphery 112a of the inner peripheral surface 112 of the annular portion 11, and a coating gap G for forming a conductive ring 500 by coating. Finally, the base 3 is fixed to the upper cover 1 for forming a conductive ring 500 on the inner spherical surface 300b of the spherical cover 300 by coating the coating gap G.

[0057] In this example, the inner peripheral surface 111a of the receiving groove 111 of the annular portion 11 of the upper cover 1 is used to fit the inner spherical surface 300b at the top 300a of the spherical cover 300 to be plated, which is housed in the receiving groove 111, and the outer peripheral edge 22 is used to abut against the corresponding inner spherical surface 300b at the top 300a of the spherical cover 300 to be plated. After the upper cover 1 is fixed together with the positioning plate 2 via the protrusion 12 and the base 3 can be fixed together with the upper cover 1, the size, shape, and position of the coating gap G for forming the conductive ring 500 by coating are set, thereby ensuring the stability and accuracy of the coating gap G and the conductive ring 500 formed by coating in terms of size, shape, and position. Since the inner peripheral surface 111a of the receiving groove 111 of the annular portion 11 of the top cover 1 is used to fit the inner spherical surface 300b at the top 300a of the spherical cover 300 to be plated, which is housed in the receiving groove 111, and the outer peripheral edge 22 is used to fit the corresponding inner spherical surface 300b at the top 300a of the spherical cover 300 to be plated, there are no gaps between the inner peripheral surface 111a and the inner spherical surface 300b, and between the outer peripheral edge 22 and the inner spherical surface 300b. This avoids the formation of shadows (i.e., during plating, the plating material forming the conductive ring 500 enters the gap and forms burrs) defects at the two edges of the conductive ring 500 along the axial direction D, thereby improving the stability and accuracy of the conductive ring 500 formed by the coating in terms of size, shape, and position. The shape of the inner circumferential surface 111a is designed to fit the spherical cover 300. That is, the shape of the inner circumferential surface 111a is complementary to the shape of the inner spherical surface 300b of the top 300a of the spherical cover 300. The complementary shape of the inner circumferential surface 111a also avoids scratching the inner spherical surface 300b of the top 300a of the spherical cover 300.

[0058] Furthermore, the receiving groove 111 of the annular portion 11 also has an outer peripheral surface 111b, which is radially opposite to the inner peripheral surface 111a. The outer peripheral surface 111b is designed to avoid contact with the outer spherical surface 300c of the top 300a of the spherical cover 300. This facilitates the insertion of the top 300a of the spherical cover 300 into the receiving groove 111, reduces the area of ​​contact with the top 300a of the spherical cover 300, and thus reduces the probability of damage to the spherical cover 300 caused by contact with the spherical cover 300.

[0059] like Figure 9 and Figure 10As shown, the length of the outer peripheral surface 111b along the axial direction D is greater than the length of the inner peripheral surface 111a along the axial direction D; the length of the outer peripheral surface 111b along the axial direction D is greater than the length of the inner peripheral surface 112 along the axial direction D. Therefore, in the structural design of the annular portion 11 of the upper cover 1, the length of the inner peripheral surface 111a along the axial direction D can be matched with the positioning plate 2 (specifically the outer periphery 22 of the positioning plate 2) over a larger range to achieve a larger range of the size of the coating gap G along the axial direction D, thereby improving the adaptability and flexibility of the size of the conductive ring 500.

[0060] like Figure 6 , Figure 9 and Figure 10 As shown, the receiving groove 111 of the annular portion 11 also has a top surface 111c, which abuts against the top surface 300d of the top 300a of the spherical cover 300. The top surface 111c enables the top 300a of the spherical cover 300 to be positioned in the axial direction D, thereby contributing to the stability and accuracy of the coating gap G used to form the conductive ring 500 by coating and the size, shape, and position of the coated conductive ring 500.

[0061] like Figure 9 and Figure 10 As shown, the inner circumferential surface 112 of the annular portion 11 is inclined relative to the axial direction D. Compared to the inner circumferential surface 112 of the annular portion 11 being parallel to the axial direction D, the inclination of the inner circumferential surface 112 of the annular portion 11 relative to the axial direction D is beneficial to increasing the radial dimension of the hollow space S of the upper cover 1, which is beneficial to the sputtering target 400 of the vacuum sputtering coating machine 100 (see...). Figure 1 as well as Figure 11 and Figure 12 It extends into the hollow space S.

[0062] Such as 9 and Figure 10 As shown, the inner circumferential surface 112 and the outer circumferential surface 111b of the annular portion 11 are connected by a plane 113. That is, the inner circumferential surface 112 of the annular portion 11 will not form a sharp angle with the outer circumferential surface 111b due to the spacing provided by the plane 113, thus preventing scratches to the spherical cover 300 and the operator's hands. Furthermore, the plane 113 helps to enhance the structural strength of the portion between the inner circumferential surface 112 and the outer circumferential surface 111b of the annular portion 11, thereby ensuring that the portion between the inner circumferential surface 112 and the outer circumferential surface 111b of the annular portion 11 will not deform under stress on the spherical cover 300, thus ensuring that the position of the spherical cover 300 is fixed, stable, and precise. The radial dimension (i.e., width) of the plane 113 determines the minimum wall thickness between the inner circumferential surface 112 and the outer circumferential surface 111b of the annular portion 11, and the specific minimum wall thickness can be determined according to the aforementioned requirement of not causing elastic deformation.

[0063] like Figure 2 , Figures 4 to 6As shown, the annular part 11 is also provided with an annular groove 114 on its outer periphery, which is provided for the operator's fingers to place and grasp the top cover 1.

[0064] In addition, such as Figure 6 and Figure 7 As shown, the annular portion 11 has hand slots 116 on both radially opposite sides of the receiving groove 111. The hand slots 116 are for the operator's fingers to place and grasp the top 300b of the ball cover 300. The hand slots 116 improve the convenience for the operator to place and remove the ball cover 300, and improve the accuracy of placing the top 300b of the ball cover 300 into the receiving groove 111 by visual inspection. In addition, the two hand slots 116 also play a preliminary positioning role when placing the ball cover 300, so that the top 300b of the ball cover 300 can be visually aligned with the receiving groove 111 before placement, thereby avoiding the top 300b of the ball cover 300 from colliding with the part between the inner peripheral surface 112 and the outer peripheral surface 111b of the annular portion 11 (i.e., the aforementioned plane 113), and avoiding damage or scratches to the ball cover 300.

[0065] like Figures 2 to 8 As shown, the protrusion 12 is rectangular. While ensuring that the protrusion 12 can be detachably fixed to the positioning plate 2, the shorter the radial dimension of the protrusion 12, the better. This reduces the amount of hollow space S occupied by the protrusion 12, which is beneficial to the sputtering target 400 of the vacuum sputtering coating machine 100 (see...). Figure 1 as well as Figure 11 and Figure 12 It extends deeper into the hollow space S.

[0066] like Figures 2 to 10 As shown, the top cover 1 is a single piece of aluminum alloy, which ensures the structural strength and resistance to deformation due to temperature rise, both in terms of structure and material.

[0067] In one example, such as Figure 4 , Figure 5 , Figure 9 and Figure 10As shown, the ball cover fixing fixture 200 also includes a positioning element 4 and a centering screw 5. The protrusion 12 is provided with a first positioning hole 121 and a first centering screw hole 122. The first positioning hole 121 and the first centering screw hole 122 extend through the protrusion 12 along the axial direction D. The positioning plate 2 has a second positioning hole 23 and a second centering screw hole 24, which extend through the positioning plate 2 along the axial direction D. The second positioning hole 23 is aligned with the first positioning hole 121 in the axial direction D, and the second centering screw hole 24 and the first centering screw hole 122 are also aligned in the axial direction D. The positioning element 4 is used to pass through the first positioning hole 121 and the second positioning hole 23 aligned in the axial direction D to position the protrusion 12 of the upper cover 1 relative to the positioning plate 2. The centering screw 5 is used to screw into the first centering screw hole 122 and the second centering screw hole 24 aligned in the axial direction D to fix the protrusion 12 of the upper cover 1 relative to the positioning plate 2, thereby fixing the upper cover 1 and the positioning plate 2 relative to each other at their center. During operation, the positioning element 4 is first passed through the first positioning hole 121 and the second positioning hole 23 aligned axially D to position the protrusion 12 of the upper cover 1 relative to the positioning plate 2. Then, the centering screw 5 is screwed into the first centering screw hole 122 and the second centering screw hole 24 aligned axially D to fix the protrusion 12 of the upper cover 1 relative to the positioning plate 2. Tightening and loosening the centering screw 5 in the first centering screw hole 122 and the second centering screw hole 24 aligned axially D allows the coating gap G between the outer periphery 22 of the positioning plate 2 and the bottom periphery 112a of the inner periphery surface 112 of the upper cover 1 to be adjustable in the axial direction D, thereby meeting the requirements of conductive rings 500 with different axial dimensions and radial diameters. Furthermore, the positioning element 4 is a headed pin.

[0068] Since the first positioning hole 121 and the second positioning hole 23 of the protrusion 12 of the upper cover 1 are aligned along the axial direction D, and the first centering screw hole 122 and the second centering screw hole 24 of the protrusion 12 of the upper cover 1 are aligned along the axial direction D, and the protrusion 12 of the upper cover 1 protrudes inward from the inner circumferential surface 112 of the annular portion 11, the protrusion 12 of the upper cover 1 and the positioning plate 2 are fixed to each other, so that the inner circumferential surface 112 of the annular portion 11 and the receiving groove 111 are fixed to each other relative to the positioning plate 2, thereby ensuring the positioning and fixing of the ball cover 300 relative to the receiving groove 111 and the positioning plate 2. The center of the sphere 0 will be on the same straight line extending along the axial direction D as the center of the positioning plate 2 and the center of the inner peripheral surface 112. This is beneficial to improving the uniformity of the coating thickness of the conductive ring 500 after coating. In particular, when the axis 400b of the sputtering target 400 of the vacuum sputtering coating machine 100 is on the same straight line extending along the axial direction D as the center of the positioning plate 2 (with the through hole 21 as a reference) and the center of the inner peripheral surface 112, it is beneficial to improve the uniformity of the thickness of the conductive ring 500 formed in the coating gap G after the annular sputtering of the sputtering surface 400a2.

[0069] like Figure 8As shown, the through hole 21 of the positioning plate 2 is located at the center of the positioning plate 2; there are two second positioning holes 23 in the positioning plate 2, and the two second positioning holes 23 are not on the same straight line as the through hole 21 of the positioning plate 2; there are two second centering screw holes 24 in the positioning plate 2, and the two centering screw holes 24 are on the same straight line as the through hole 21 of the positioning plate 2; the second centering screw holes 24 are located circumferentially between the two second positioning holes 23 and radially between the two second positioning holes 23. Similarly, since the first positioning hole 121 and the second positioning hole 23 of the protrusion 12 of the aforementioned upper cover 1 are aligned along the axial direction D, and the first centering screw hole 122 and the second centering screw hole 24 of the protrusion 12 of the upper cover 1 are aligned along the axial direction D, and the protrusion 12 of the upper cover 1 protrudes inward from the inner circumferential surface 112 of the annular portion 11, the protrusion 12 of the upper cover 1 and the positioning plate 2 are fixed relative to each other, thus the inner circumferential surface 112 of the annular portion 11 and the receiving groove 111 are fixed relative to the positioning plate 2, thereby ensuring the positioning and fixation of the ball cover 300 relative to the receiving groove 111 and the positioning plate 2. The center of the ball, the center of the positioning plate 2 (with reference to the through hole 21), and the center of the inner circumferential surface 112 are all on the same straight line extending along the axial direction D. This is beneficial to improving the uniformity of the coating thickness of the conductive ring 500 after coating. In particular, when the axis 400b of the sputtering target 400 of the vacuum sputtering coating machine 100, the center of the positioning plate 2 (with reference to the through hole 21), and the center of the inner circumferential surface 112 are all on the same straight line extending along the axial direction D, it is beneficial to improve the uniformity of the thickness of the conductive ring 500 formed in the coating gap G after the annular sputtering of the sputtering surface 400a2. In addition, since the through hole 21 of the positioning plate 2 is located at the center of the positioning plate 2 and the two centering screw holes 24 are on the same straight line as the through hole 21 of the positioning plate 2, it is also very convenient to visually determine the accuracy of the positioning and fixing of the protrusion 12 of the upper cover 1 and the positioning plate 2 relative to each other during the aforementioned positioning and fixing process.

[0070] Reference Figures 4 to 8The positioning plate 2 has a main body 25 and a protrusion 26. The protrusion 26 protrudes axially D from the side of the main body 25 away from the base 3, with its outer periphery 22 located on the main body 25. A through hole 21 penetrates the main body 25 axially D. A second positioning hole 23 and a second centering screw hole 24 penetrate the main body 25 and the protrusion 26 axially D. The protrusion 26 facilitates visual alignment between the protrusion 12 of the upper cover 1 and the protrusion 26. In addition, the protrusion 26 increases the structural strength and deformation resistance of the positioning plate 2. The protrusion 26 also increases the depth of the second positioning hole 23 and the depth of the centering screw hole 24, thereby improving the stability of the relative positioning and fixation of the protrusion 12 of the upper cover 1 and the positioning plate 2. Furthermore, due to the fit between the protrusion 26 and the protrusion 12 of the upper cover 1, the coating gap G is discontinuous at the locations of the protrusion 26 and the protrusion 12 of the upper cover 1. In other words, the conductive ring 500 formed by the coating is not a complete ring (see...). Figure 11 Of course, the protrusion 26 is not necessary. That is, the protrusion 12 of the upper cover 1 directly mates with the main body 25. In this way, the coating gap G is also disconnected at the point where the main body 25 and the protrusion 12 of the upper cover 1 mate.

[0071] like Figure 5 , Figure 6 , Figure 7 and Figure 9 As shown, the positioning plate 2 has a lower chamfer 27 on the side of its outer periphery 22 along the axial direction D near the base 3. The lower chamfer 27 is used to fit against a portion of the inner spherical surface 300b of the top 300a of the spherical cover 300. The lower chamfer 27 further extends the fitting range between the positioning plate 2 and the inner spherical surface 300b of the top 300a of the spherical cover 300 based on the outer periphery 22, thereby further improving the stability of the conductive ring 500 formed by the coating in terms of size, shape, and position. In addition, the lower chamfer 27 can also prevent scratching the inner spherical surface 300b of the spherical cover 300.

[0072] like Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the positioning plate 2 has an upper chamfer 28 on the side of its outer periphery 22 away from the base 3 along the axial direction D. The upper chamfer 28 is used to cooperate with the inner surface of the upper cover 1 and the outer periphery 22 of the positioning plate 2 to increase the space at the coating gap G. This is more conducive to improving the uniformity of the thickness of the conductive ring 500 formed in the coating gap G after the annular sputtering of the sputtering surface 400a2 and the sputtering coating efficiency.

[0073] like Figures 4 to 8As shown, in one example, the positioning plate 2 has a main body 25, with an outer periphery 22 located on the main body 25, and a through hole 21 penetrating the main body 25 along the axial direction D; the main body 25 of the positioning plate 2 is provided with through holes 251 inclined relative to the axial direction D on both sides of the circumferential direction corresponding to the protrusion 12 of the upper cover 1; the through holes 251 on both sides are used to form coated discs 500b located at both ends of the conductive ring 500 for the placement of conductive leads during the coating process (see Figure 11 The perforations 25 are used to form a coated disc 500b during the coating process, which facilitates the placement of conductive leads (not shown) on the coated disc 500b (for example, by soldering the conductive leads to the coated disc 500b with a soldering iron and then gluing them in place). In the figure, there are two perforations 251 on each side, but it is not limited to this; there may be one or more perforations 251 on each side.

[0074] The positioning plate 2 can be a single piece of aluminum alloy or a single piece of copper. Compared with a single piece of aluminum alloy, a single piece of copper can better prevent the positioning plate 2 from deforming under the high temperature during the coating process (such as the high temperature formed by the deposition of target particles sputtered from the sputtering surface 400a2 at the coating gap G). This prevents the positioning and fixing of the ball cover 300 from deviating due to high temperature, thereby preventing deviations in the shape, size, position and thickness of the conductive ring 500 formed by coating, which would affect the quality and yield of the conductive ring 500.

[0075] Reference Figure 4 , Figure 5 , Figure 9 and Figure 10 In one example, the spherical cover fixing fixture 200 also includes a plurality of fixing screws 6. The annular portion 11 also has a plurality of upper threaded holes 115, which extend through the annular portion 11 axially along the axis D and are spaced apart circumferentially. The base 3 has a flange 31 for supporting the annular portion 11. The flange 31 has a plurality of lower threaded holes 311 extending through the axis D and distributed circumferentially, each lower threaded hole 311 being aligned with the corresponding upper thread of the upper cover 1. Each fixing screw 6 is screwed into the lower threaded hole 311 of the aligned base 3 and the upper threaded hole 115 of the upper cover 1 to fix the upper cover 1 and the base 3 relative to each other. The cooperation of the fixing screws 6, the upper threaded holes 115 and the lower threaded holes 311 achieves the fixation of the upper cover 1 and the base 3 relative to each other and the fixing of the spherical cover 300, improving the overall stability of the spherical cover fixing fixture 200, and at the same time improving the coating effect of the conductive ring 500. The number of fixing screws 6, upper threaded hole 115 and lower threaded hole 311 are four in the figure, but the specific number can be changed according to actual needs.

[0076] like Figures 4 to 6 As shown and combined Figure 9 and Figure 10The base 3 includes a seat 32, which has a support surface 321. The support surface 321 is used to attach to and support a portion of the outer spherical surface 300c of the spherical cover 300 to be plated with the conductive ring. The support surface 321 helps to improve the stability of the spherical cover 300, improve the overall stability of the spherical cover fixing fixture 200, and at the same time improve the coating effect of the conductive ring 500.

[0077] The base 32 also has a through hole 322, which passes through the base 3 along the axial direction D and is used to expose a portion of the bottom of the outer spherical surface 300c of the spherical cover 300.

[0078] The base 3 is a single piece of polyethylene. Using a single piece of polyethylene for the base 3 can prevent scratches on the ball cover 300.

[0079] The 300 sphere cover can be, but is not limited to, zinc sulfide or zinc selenide sphere covers. Figure 11 This is a schematic diagram of a spherical cover that forms a conductive ring. Figure 12 This is a photo of the coating deposited inside the dome.

[0080] Several exemplary embodiments have been described in detail above, but this document is not intended to limit itself to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined to form several other combinations, which are not shown for simplicity.

Claims

1. A spherical cover fixing fixture, characterized in that, The ball cover fixing fixture (200) includes a top cover (1), a positioning plate (2), and a base (3); The top cover (1) is used to accommodate the top (300a) of the ball cover (300) to be plated with the conductive ring, and the top cover (1) has a hollow space (S) that extends through the axial direction (D). The positioning plate (2) is used to be placed inside the top (300a) of the ball cover (300) to be plated with conductive ring. The positioning plate (2) has a through hole (21) that penetrates the positioning plate (2) along the axial direction (D) so that the space enclosed by the inner spherical surface (300b) of the top (300a) of the ball cover (300) is connected to the hollow space (S) of the annular part (11). The base (3) is used to support the ball cover (300) of the conductive ring to be plated from below. The positioning plate (2) can be detachably fixed to the top cover (1) and the base (3) can be detachably fixed to the top cover (1) to fix the ball cover (300) to be plated with the conductive ring, thereby forming a coating gap (G) for forming the conductive ring (500) by coating a portion of the inner spherical surface (300b) at the top (300a) of the ball cover (300).

2. The spherical cover fixing fixture according to claim 1, characterized in that, The top cover (1) has an annular portion (11) and a protrusion (12). The annular portion (11) has a receiving groove (111) and an inner circumferential surface (112). The receiving groove (111) is used to receive the top (300a) of the ball cover (300) to be plated with the conductive ring. The receiving groove (111) has an annular inner circumferential surface (111a) for fitting the inner spherical surface (300b) at the top (300a) of the ball cover (300) to be plated with the conductive ring contained in the receiving groove (111). The inner circumferential surface (112) forms a hollow space (S) that runs through the axial direction (D), and the inner circumferential surface (112) has a bottom perimeter (112a). The protrusion (12) protrudes inward from the inner circumferential surface (112) of the annular portion (11), and the protrusion (12) can be detachably fixed together with the positioning plate (2); The positioning plate (2) also has an outer periphery (22) for: abutting against the corresponding ring of the inner spherical surface (300b) of the top (300a) of the ball cover (300) to be plated with the conductive ring, and spaced axially (D) from the bottom periphery (112a) of the inner circumferential surface (112) of the annular portion (11) to form a plating gap (G) between the outer periphery (22) and the bottom periphery (112a) of the inner circumferential surface (112) of the annular portion (11) that exposes a portion of the inner spherical surface (300b) at the top (300a) of the ball cover (300) and is used to form the conductive ring (500) by plating.

3. The spherical cover fixing fixture according to claim 2, characterized in that, The receiving groove (111) of the annular portion (11) also has an outer peripheral surface (111b), which is radially opposite to the inner peripheral surface (111a). The outer peripheral surface (111b) is used to avoid contact with the outer spherical surface (300c) of the top (300a) of the spherical cover (300). The length of the outer circumferential surface (111b) along the axial direction (D) is greater than the length of the inner circumferential surface (111a) along the axial direction (D); The length of the outer circumferential surface (111b) along the axial direction (D) is greater than the length of the inner circumferential surface (112) along the axial direction (D).

4. The spherical cover fixing fixture according to claim 2, characterized in that, The receiving groove (111) of the annular portion (11) also has a top surface (111c) for abutting against the top surface (300d) of the top (300a) of the spherical cover (300).

5. The spherical cover fixing fixture according to claim 3, characterized in that, The inner circumferential surface (112) of the annular portion (11) is inclined relative to the axial direction (D); The inner circumferential surface (112) of the annular portion (11) is connected to the outer circumferential surface (111b) via a plane (113).

6. The spherical cover fixing fixture according to claim 2, characterized in that, The ball cover fixing fixture (200) also includes a positioning component (4) and a centering screw (5); The protrusion (12) is provided with a first positioning hole (121) and a first centering screw hole (122), and the first positioning hole (121) and the first centering screw hole (122) penetrate the protrusion (12) along the axial direction (D); The positioning plate (2) has a second positioning hole (23) and a second centering screw hole (24). The second positioning hole (23) and the second centering screw hole (24) penetrate the positioning plate (2) along the axial direction (D). The second positioning hole (23) is aligned with the first positioning hole (121) in the axial direction (D). The second centering screw hole (24) and the first centering screw hole (122) are aligned in the axial direction (D). The positioning element (4) is used to pass through the first positioning hole (121) and the second positioning hole (23) aligned axially (D) so that the protrusion (12) of the upper cover (1) is positioned relative to the positioning plate (2); The centering screw (5) is used to screw into the first centering screw hole (122) and the second centering screw hole (24) aligned axially (D) so that the protrusion (12) of the upper cover (1) is fixed relative to the positioning plate (2), and thus the upper cover (1) and the positioning plate (2) are fixed relative to each other in the center.

7. The spherical cover fixing fixture according to claim 6, characterized in that, The through hole (21) of the positioning plate (2) is located at the center of the positioning plate (2); The positioning plate (2) has two second positioning holes (23), and the two second positioning holes (23) and the through hole (21) of the positioning plate (2) are not on the same straight line; The positioning plate (2) has two second centering screw holes (24), and the two second centering screw holes (24) and the through hole (21) of the positioning plate (2) are on the same straight line; The second centering screw hole (24) is located circumferentially between the two second positioning holes (23) and the two second centering screw holes (24) are located radially between the two second positioning holes (23).

8. The spherical cover fixing fixture according to claim 6, characterized in that, The positioning plate (2) has a main body (25) and a protrusion (26), the protrusion (26) protruding axially (D) from the side of the main body (25) opposite to the base (3). The outer periphery (22) is located in the main body (25), and the through hole (21) penetrates the main body (25) along the axial direction (D). The second positioning hole (23) and the second centering screw hole (24) penetrate the main body (25) and the protrusion (26) along the axial direction (D).

9. The spherical cover fixing fixture according to claim 2, characterized in that, The positioning plate (2) has a lower chamfer (27) on the side of the outer periphery (22) along the axial direction (D) near the base (3). The lower chamfer (27) is used to fit a portion of the inner spherical surface (300b) of the top (300a) of the spherical cover (300); The positioning plate (2) has an upper chamfer (28) on the side of its outer periphery (22) away from the base (3) along the axial direction (D). The upper chamfer (28) is used to cooperate with the inner surface of the upper cover (1) and the outer periphery (22) of the positioning plate (2) to increase the space at the coating gap (G).

10. The spherical cover fixing fixture according to claim 1, characterized in that, The positioning plate (2) has a main body (25). The outer periphery (22) is located in the main body (25), and the through hole (21) penetrates the main body (25) along the axial direction (D). The main body (25) of the positioning plate (2) is provided with through holes (251) inclined relative to the axial direction (D) on both sides of the protrusion (12) of the upper cover (1) along the circumferential direction. The perforations (251) on both sides are used to form coating discs (500b) located at both ends of the conductive ring (500) for the placement of conductive leads during coating.

11. The spherical cover fixing fixture according to claim 2, characterized in that, The ball cover fixing fixture (200) also includes multiple fixing screws (6); The annular portion (11) also has a plurality of threaded holes (115), which pass through the annular portion (11) along the axial direction (D) and are spaced apart along the circumferential direction; The base (3) has a flange (31) for supporting an annular portion (11). The flange (31) has multiple threaded holes (311) that are axially (D) through and circumferentially distributed. Each threaded hole (311) is used to align with the corresponding thread of the upper cover (1). Each fixing screw (6) is used to screw into the lower threaded hole (311) of the aligned base (3) and the upper threaded hole (115) of the upper cover (1) to fix the upper cover (1) and the base (3) relative to each other.

12. The spherical cover fixing fixture according to claim 1, characterized in that, The base (3) includes a seat (32) having a support surface (321) for attaching to and supporting a portion of the outer spherical surface (300c) of the spherical cover (300) of the conductive ring to be plated; The base (32) also has a through hole (322) that extends through the base (3) along the axial direction (D) and is used to expose a portion of the bottom of the outer spherical surface (300c) of the spherical cover (300).

13. The spherical cover fixing fixture according to claim 1, characterized in that, The top cover (1) is a single piece of aluminum alloy. The positioning plate (2) is a single piece of aluminum alloy or a single piece of copper. The base (3) is a single piece of polyethylene.

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