阅读说明：本技术 一种输能窗的焊接模具及其使用方法 (Welding die for energy transmission window and using method thereof ) 是由 宋晓霖 王加松 王翠连 闵立涛 路占利 于 2021-08-12 设计创作，主要内容包括：本申请实施例公开一种输能窗的焊接模具及其使用方法,焊接模具包括同轴设置的两个夹板；两个夹板之间的空间用以容放输能窗；夹板包括呈平面的顶面,及包括凸台部的底面；凸台部被配置为用以与输能窗的上法兰盘上的凹槽对应滑配连接；夹板上还包括自夹板顶面贯穿凸台部底面的对中孔；对中孔与输能窗上法兰盘波导孔和下法兰盘波导孔直径相等；焊接模具还包括与对中孔、输能窗上法兰盘波导孔以及下法兰盘波导孔可滑配连接的两个对中件；两个对中件中的一个对中件自一个夹板的顶面依次穿过该夹板对中孔及上法兰盘波导孔至窗套筒内；两个对中件中的另一个对中件自另一夹板的凸台部的底面依次穿过该夹板对中孔及下法兰盘波导孔至窗套筒内。(The embodiment of the application discloses a welding mould of an energy transmission window and a using method thereof, wherein the welding mould comprises two clamping plates which are coaxially arranged; the space between the two clamping plates is used for accommodating the energy transmission window; the clamping plate comprises a plane top surface and a bottom surface comprising a boss part; the boss part is configured to be correspondingly connected with the groove on the upper flange of the energy transmission window in a sliding fit mode; the clamping plate also comprises a centering hole which penetrates through the bottom surface of the boss part from the top surface of the clamping plate; the diameters of the centering hole and the waveguide hole of the upper flange plate and the waveguide hole of the lower flange plate of the energy transmission window are equal; the welding mould also comprises two centering pieces which can be connected with the centering hole, the wave guide hole of the upper flange plate of the energy transmission window and the wave guide hole of the lower flange plate in a sliding fit manner; one of the two centering pieces sequentially penetrates through the clamping plate centering hole and the upper flange waveguide hole from the top surface of one clamping plate to the inside of the window sleeve; the other centering piece of the two centering pieces sequentially penetrates through the clamping plate centering hole and the lower flange waveguide hole from the bottom surface of the boss part of the other clamping plate to the interior of the window sleeve.)

1. A welding mould of energy transmission window, characterized by, includes:

two clamping plates which are coaxially arranged; the space between the two clamping plates is used for accommodating the energy transmission window;

the clamping plate comprises a plane top surface and a bottom surface comprising a boss part;

the boss part is configured to be correspondingly connected with the groove on the upper flange of the energy transmission window in a sliding fit mode;

the clamping plate also comprises a centering hole which penetrates through the bottom surface of the boss part from the top surface of the clamping plate;

the diameters of the centering hole are equal to those of the waveguide hole of the upper flange plate and the waveguide hole of the lower flange plate of the energy transmission window;

the welding mold further includes:

the two centering pieces are connected with the centering hole, the energy transmission window upper flange waveguide hole and the lower flange waveguide hole in a sliding fit manner;

one of the two centering pieces sequentially penetrates through the clamping plate centering hole and the flange waveguide hole on the energy transmission window from the top surface of one clamping plate to the window sleeve of the energy transmission window;

and the other centering piece of the two centering pieces sequentially penetrates through the clamping plate centering hole and the waveguide hole of the lower flange of the energy transmission window from the bottom surface of the boss part of the other clamping plate to the window sleeve of the energy transmission window.

2. The welding die for energy delivery windows according to claim 1, wherein the boss portion is located on a central axis of the clamping plate;

the centering hole is located on the central axis of the clamping plate.

3. The welding mold for energy delivery windows according to claim 1, wherein the clamping plate includes a positioning hole thereon, the positioning hole being located outside the boss portion; the welding mould also comprises a plurality of positioning pins which can be connected with the positioning holes in a sliding fit manner.

4. Welding mould for energy transmission windows according to claim 3,

a first gap is formed between the surface of the outer side wall of the centering piece and the surfaces of the inner side walls of the clamping plate centering hole and the energy transmission window flange plate waveguide hole;

a second gap is formed between the surface of the outer side wall of the positioning pin and the surface of the inner side wall of the positioning hole;

the first gap is greater than the second gap.

5. Welding mould for energy transmission windows according to claim 1,

when the boss portion is located in the groove of the energy delivery window, the bottom surface of the boss portion is attached to the bottom surface of the groove of the energy delivery window.

The height of the boss part is greater than the depth of the groove of the energy transmission window;

and a third gap is formed between the surface of the outer side wall of the boss and the surface of the inner side wall of the groove part of the energy transmission window.

6. Welding mould for energy transmission windows according to claim 1,

the centering piece is of a cuboid structure, and four edges in the extending direction of the centering piece are provided with chamfer structures.

7. Welding mould for energy transmission windows according to claim 3,

the clamping plate comprises a connecting hole, and the connecting hole is positioned on the outer side of the positioning hole; the welding mould is characterized by further comprising a screw rod penetrating through the connecting hole, and nuts are arranged at two ends of the screw rod.

8. A method of using the welding mold as defined in any one of claims 1 to 7, comprising:

the boss part of one of the two clamping plates is inserted into the groove of the upper flange of the energy transmission window, and the surface of one side of the other clamping plate, which is far away from the boss part, is abutted against the lower flange of the energy transmission window;

one centering piece penetrates through a centering hole in the upper side clamping plate and a waveguide hole in an upper flange plate of the energy transmission window to be arranged in a window sleeve of the energy transmission window, and the other centering piece penetrates through a centering hole in the lower side clamping plate and a waveguide hole in a lower flange plate to be arranged in the window sleeve of the energy transmission window;

detecting the parallelism between the two clamping plates;

taking out the two centering pieces;

and feeding the energy transmission window clamped and fixed by the two clamping plates into a furnace for welding.

Technical Field

The application relates to the technical field of dies, in particular to a welding die for an energy transmission window and a using method of the welding die.

Background

With the improvement of the technological level, the design of the traveling wave tube tends to high power and high frequency band more and more; the demand for output power in the Ka band of traveling wave tubes rises from the hundred watt level to the kilowatt level. The Ka band also requires a correspondingly large power window. However, the size of the energy transmission window of the Ka band in the traveling wave tube is small, for example, for the energy transmission window with model number BJ320, the side length of the lower flange is 19.1mm, and the length and width of the opening of the waveguide hole on the flange are 7.112mm × 3.556mm respectively; and the welding mould and the energy transmission window need multiple positioning in the assembling process of using the existing welding mould, so that the welding filling is not uniform due to uneven stress of the energy transmission window in the welding process, air leakage occurs, the standing-wave ratio of the energy transmission window after welding is not met, and finally the yield of the energy transmission window is low. For example, the energy transmission window assembled by the welding die shown in fig. 6 is easy to generate air leakage and window sheet explosion of the energy transmission window, the standing wave ratio is difficult to control within 8% compared with that before welding, the parallelism after welding is not good due to the dislocation of the waveguide holes of the upper flange plate and the lower flange plate of the energy transmission window, in-band resonance is easy to cause, and the yield is less than 60%.

Therefore, in order to overcome the defects in the prior art, a welding mold for an energy transmission window and a use method thereof need to be provided.

Disclosure of Invention

The invention aims to provide a welding die of an energy transmission window and a using method thereof, which are used for improving the manufacturing precision of the energy transmission window, ensuring the air tightness requirement of the energy transmission window, ensuring the controllability of the standing-wave ratio after welding and improving the yield.

Another object of the present invention is to provide a method of using the welding mold as described above.

In order to achieve the first object, the following technical solutions are adopted in the present application:

this application first aspect provides a welding mould of defeated energy window, includes:

two clamping plates which are coaxially arranged; the space between the two clamping plates is used for accommodating the energy transmission window;

the clamping plate comprises a plane top surface and a bottom surface comprising a boss part;

the boss part is configured to be correspondingly connected with the groove on the upper flange of the energy transmission window in a sliding fit mode;

the clamping plate also comprises a centering hole which penetrates through the bottom surface of the boss part from the top surface of the clamping plate;

the diameters of the centering hole are equal to those of the waveguide hole of the upper flange plate and the waveguide hole of the lower flange plate of the energy transmission window;

the welding mold further includes:

the two centering pieces are connected with the centering hole, the energy transmission window upper flange waveguide hole and the lower flange waveguide hole in a sliding fit manner;

one of the two centering pieces sequentially penetrates through the clamping plate centering hole and the flange waveguide hole on the energy transmission window from the top surface of one clamping plate to the window sleeve of the energy transmission window;

and the other centering piece of the two centering pieces sequentially penetrates through the clamping plate centering hole and the waveguide hole of the lower flange of the energy transmission window from the bottom surface of the boss part of the other clamping plate to the window sleeve of the energy transmission window.

Optionally, the boss portion is located on a central axis of the clamping plate;

the centering hole is located on the central axis of the clamping plate.

Optionally, the clamping plate includes a positioning hole located at an outer side of the boss portion; the welding mould also comprises a plurality of positioning pins which can be connected with the positioning holes in a sliding fit manner.

Optionally, a first gap is formed between the outer side wall surface of the centering piece and the inner side wall surfaces of the clamping plate centering hole and the energy transmission window flange waveguide hole;

a second gap is formed between the surface of the outer side wall of the positioning pin and the surface of the inner side wall of the positioning hole;

the first gap is greater than the second gap.

Optionally, when the boss portion is located in the groove of the energy delivery window, a bottom surface of the boss portion abuts a bottom surface of the groove of the energy delivery window.

The height of the boss part is greater than the depth of the groove of the energy transmission window;

and a third gap is formed between the surface of the outer side wall of the boss and the surface of the inner side wall of the groove part of the energy transmission window.

Optionally, the centering member is of a rectangular parallelepiped structure, and four edges in the extending direction of the centering member have a chamfer structure.

Optionally, the clamping plate comprises a connecting hole, and the connecting hole is positioned on the outer side of the positioning hole; the welding mould also comprises a screw rod arranged in the connecting hole in a penetrating way, and two ends of the screw rod comprise nuts.

In order to achieve the second object, the present application provides a method for using the welding mold for the energy transmission window according to the first aspect, including:

the boss part of one of the two clamping plates is inserted into the groove of the upper flange of the energy transmission window, and the surface of one side of the other clamping plate, which is far away from the boss part, is abutted against the lower flange of the energy transmission window;

one centering piece penetrates through a centering hole in the upper side clamping plate and a waveguide hole in an upper flange plate of the energy transmission window to be arranged in a window sleeve of the energy transmission window, and the other centering piece penetrates through a centering hole in the lower side clamping plate and a waveguide hole in a lower flange plate to be arranged in the window sleeve of the energy transmission window;

detecting the parallelism between the two clamping plates;

taking out the two centering pieces;

and feeding the energy transmission window clamped and fixed by the two clamping plates into a furnace for welding.

The beneficial effect of this application is as follows:

aiming at the problems in the prior art, the application provides a welding mould of an energy transmission window, wherein an upper flange plate and a lower flange plate of the energy transmission window are correspondingly arranged through two clamping plates; the boss part of one clamping plate is correspondingly connected with the groove on the upper flange of the energy transmission window in a sliding fit manner, so that the clamping plate is matched with the upper flange; the centering piece penetrates through the centering hole and the waveguide hole in the clamping plate to align the upper flange plate with the lower flange plate, so that the precision of the relative position of the upper flange plate and the lower flange plate is improved; therefore, the welding mould ensures that the solder flows away more uniformly in the welding process, reduces the problem of poor parallelism caused by stress release in the welding process, reduces air leakage in the welding process, improves the welding quality of the energy transmission window, effectively controls the standing wave ratio of the energy transmission window before and after welding and improves the yield of the energy transmission window; the difference of the standing-wave ratios of the energy transmission windows before and after welding is controlled within 5%, the yield is improved by more than 30%, the parallelism of the energy transmission windows can be controlled within 0.03mm, and the probability of the occurrence of a resonant mode in the working bandwidth is reduced.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 shows a cross-sectional view of a welding die assembled with an energy delivery window in one embodiment of the present application.

FIG. 2 illustrates a cross-sectional view of the weld mold assembled with the energy delivery window after the centering member and the locating pin have been removed from the clamp plate in one embodiment of the present application.

FIG. 3 illustrates a side cross-sectional view of a clamp plate in a welding mold in one embodiment of the present application.

Fig. 4 shows a schematic structural view of a centering member in a welding die in an embodiment of the present application.

FIG. 5 illustrates a top view of a clamp plate in a welding mold in one embodiment of the present application.

Fig. 6 shows a schematic view of a prior art energy delivery window of a welding die assembly.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is further noted that, in the description of the present application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

To solve the problems in the prior art, an embodiment of the present application provides a welding mold for an energy transmission window, which is suitable for a box-type energy transmission window, as shown in fig. 1 to 5, and includes: two clamping plates which are coaxially arranged; the space between the two clamping plates is used for accommodating the energy transmission window; the clamping plate comprises a plane top surface and a bottom surface comprising a boss part 13; the boss part 13 is configured to be correspondingly connected with a groove (not shown) on the upper flange 21 of the energy transmission window in a sliding manner; the clamping plate also comprises a centering hole 14 which penetrates through the bottom surface of the boss part 13 from the top surface of the clamping plate; the diameters of the centering hole 14 and the waveguide hole of the energy transmission window upper flange plate 21 are equal to the diameters of the waveguide holes of the lower flange plate 22; the welding mold further includes: two centering pieces 31 which are connected with the centering hole 14, the waveguide hole of the energy transmission window upper flange 21 and the waveguide hole of the lower flange 22 in a sliding fit manner; one centering piece 31 of the two centering pieces 31 sequentially penetrates through the clamping plate centering hole 14 and the waveguide hole of the flange plate 21 on the energy transmission window from the top surface of one clamping plate to the window sleeve of the energy transmission window; the other centering member 31 of the two centering members 31 passes through the clamping plate centering hole 14 and the waveguide hole of the lower energy transmission window flange 22 from the bottom surface of the boss part 13 of the other clamping plate in sequence into the window sleeve of the energy transmission window.

In the embodiment of the invention, the upper flange 21 and the lower flange 22 of the energy transmission window are correspondingly arranged through the two clamping plates; wherein, the boss part 13 of one clamping plate is correspondingly connected with the groove on the upper flange 21 of the energy transmission window in a sliding fit manner, so that the clamping plate is matched with the upper flange 21; the centering piece 31 can align the upper flange 21 with the lower flange 22 through the centering hole 14 and the waveguide hole on the clamping plate, so that the accuracy of the relative position of the upper flange 21 and the lower flange 22 is improved; therefore, the welding mould ensures that the solder flows away more uniformly in the welding process, reduces the problem of poor parallelism caused by stress release in the welding process, reduces air leakage in the welding process, improves the welding quality of the energy transmission window, effectively controls the standing wave ratio of the energy transmission window before and after welding and improves the yield of the energy transmission window; the difference of the standing-wave ratios of the energy transmission windows before and after welding is controlled within 5%, the yield is improved by more than 30%, the parallelism of the energy transmission windows can be controlled within 0.03mm, and the probability of the occurrence of a resonant mode in the working bandwidth is reduced.

It should be noted that, the two clamping plates have the same shape and size, and can be manufactured by using the same mold in the manufacturing process, so that the manufacturing is convenient, and the time and the cost are saved.

In a particular embodiment, said boss portion 13 is located on the central axis of said clamping plate; the centring hole 14 is located on the central axis of the clamping plate. Thus, since the two clamping plates are all the same in shape and size, the centering member 31 can align the upper flange 21 with the lower flange 22 by passing through the centering hole 14 and the waveguide hole on the clamping plates, thereby improving the accuracy of the relative positions of the upper flange 21 and the lower flange 22. In one embodiment, the cross-section of the boss portion 13 may be circular, but of course, the cross-section of the groove of the upper flange 21 of the energy transmission window is also circular, so that the two are matched to realize a sliding connection.

In a specific embodiment, the clamping plate comprises a positioning hole 15, and the positioning hole 15 is positioned on the outer side of the boss part 13; the welding mold further comprises a plurality of positioning pins 32 which can be in sliding fit connection with the positioning holes 15. Specifically, the two clamping plates are a first clamping plate 11 and a second clamping plate 12 respectively; the first clamping plate 11 is provided with a plurality of first positioning holes which penetrate from the surface of one side of the first clamping plate 11, which is far away from the energy transmission window, to the surface of one side of the first clamping plate 11, which is close to the energy transmission window; the second clamping plate 12 is provided with a plurality of second positioning holes which penetrate from the surface of one side of the second clamping plate 12, which is far away from the energy transmission window, to the surface of one side of the second clamping plate 12, which is close to the energy transmission window, and are arranged corresponding to the first positioning holes; further comprising: a plurality of positioning pins 32 slidably connected to the first positioning holes and the second positioning holes; the positioning pin 32 sequentially passes through the first positioning hole and the second positioning hole from the surface of the first clamping plate 11, which is far away from the second clamping plate 12, to the surface of the second clamping plate 12, which is far away from the first clamping plate 11, and is used for aligning the first clamping plate 11 and the second clamping plate 12. Through the cooperation of locating hole 15 and locating pin 32, further improved the standing-wave ratio of defeated energy window, strengthened welding gas tightness and improved the welding yield.

In one embodiment, a first gap is formed between the outer side wall surface of the centering member 31 and the inner side wall surfaces of the clamping plate centering hole 14 and the energy transmission window flange waveguide hole; a second gap is formed between the outer side wall surface of the positioning pin 32 and the inner side wall surface of the positioning hole 15; the first gap is greater than the second gap. When the welding mould is fixed to the energy transmission window, the two clamping plates are aligned by the positioning pin 32 penetrating through the positioning hole 15, here, since the two clamping plates are identical, the second gap is smaller, so that the accuracy of the positioning pin 32 penetrating through the positioning hole 15 to align the two clamping plates is higher: then, one centering piece 31 penetrates through a centering hole 14 on the first clamping plate 11 and a waveguide hole of an upper flange 21 of the energy transmission window to be arranged in a window sleeve of the energy transmission window, and the other centering piece 14 penetrates through a centering hole 14 on the second clamping plate 12 and a waveguide hole of a lower flange 22 to be arranged in a window sleeve of the energy transmission window; so that the first clamping plate 11 can be aligned with the upper flange 21 of the energy transmission window, and the second clamping plate 12 can be aligned with the lower flange 22 of the energy transmission window; therefore, the positioning accuracy of the upper flange 21 and the lower flange 22 of the energy transmission window is greatly improved, and the assembly accuracy of the whole welding mould and the energy transmission window is also improved.

In a specific embodiment, when the boss portion 13 is located in the groove of the energy delivery window, the bottom surface of the boss portion 13 is attached to the bottom surface of the groove of the energy delivery window; the height of the boss part 13 is greater than the depth of the groove of the energy transmission window; specifically, the height of the boss part 13 may be 0.1mm to 0.2mm greater than the depth of the groove of the energy delivery window, and a third gap is formed between the outer side wall surface of the boss and the inner side wall surface of the groove part of the energy delivery window; specifically, the width of the third gap may be 0.02mm to 0.04 mm; thus, only the bottom surface of the boss portion 13 is in contact with the bottom surface of the groove, thereby preventing the upper flange 21 from being deformed.

In a specific embodiment, as shown in fig. 4, the centering member 31 has a rectangular parallelepiped structure, and four edges in the extending direction of the centering member 31 have a chamfered structure. The arrangement of the chamfer structure can make the centering member 31 more easily inserted into the centering hole 14 and the waveguide hole, and the deformation of the upper flange 21 due to the corner on the centering member 31 can be avoided, and the connection effect of sliding fit can also be realized.

In a specific embodiment, the clamping plate comprises a connecting hole 16, and the connecting hole 16 is positioned outside the positioning hole 15; the welding mould further comprises a screw 33 penetrating into the connecting hole 16, and nuts 34 are arranged at two ends of the screw 33.

Specifically, as shown in fig. 5, each of the first clamping plate 11 and the second clamping plate 12 includes a clamping plate body and a connecting portion extending outward from two opposite sides of the clamping plate body, and the connecting hole 16 is disposed on the connecting portion; here, the connecting hole 16 of the first clamping plate 11 is a first connecting hole, and the connecting hole 16 of the second clamping plate 12 is a second connecting hole, and the first connecting hole penetrates from a side surface of the first clamping plate 11, which is far away from the second clamping plate 12, to a side surface of the first clamping plate 11, which is close to the second clamping plate 12; a second connecting hole penetrates from the surface of one side, which is far away from the first clamping plate 11, of the second clamping plate 12 to the surface of one side, which is close to the first clamping plate 11, of the second clamping plate 12, and is arranged corresponding to the first connecting hole; further comprising: the screw 33 is correspondingly matched with the first connecting hole and the second connecting hole; the screw 33 deviates from the first clamping plate 11 a side surface of the second clamping plate 12 sequentially penetrates through the first connecting hole and the second connecting hole to a side surface of the second clamping plate 12 far away from the first clamping plate 11, and is used for fixing the first clamping plate 11 and the second clamping plate 12. The two clamping plates can be clamped through the screw 33 and the nut 34, and the energy transmission window is further fixed; in the screwing process, attention needs to be paid to the fact that force is uniformly applied to two sides, and deviation in positioning of the energy transmission window is avoided.

After the screw 33 is connected with the nut 34, the parallelism between the first clamping plate 11 and the second clamping plate 12 is detected, if the parallelism is within the range of 0.03mm, which indicates that the parallelism meets the condition, the positioning pin 32 and the centering member 31 are respectively taken out from the positioning hole 15 and the centering hole 14, and then the clamping plate and the energy transmission window connected with the screw 33 are fed into the furnace, so that the phenomenon of air leakage or poor matching caused by uneven stress at high temperature can be prevented.

The clamping plate, the centering piece 31, the positioning pin 32 and the screw 33 of the welding die are all made of nonmagnetic stainless steel, wherein the clamping plate needs to be subjected to hydrogen burning treatment.

The embodiment of the application further provides a use method of the welding mold, which includes:

step S1: the boss part of one of the two clamping plates is inserted into the groove of the upper flange of the energy transmission window, and the surface of one side of the other clamping plate, which is far away from the boss part, is abutted against the lower flange of the energy transmission window; at this point, the two clamp plates are aligned with the approximate position of the energy delivery window assembly.

Step S2: one centering piece penetrates through a centering hole in the upper side clamping plate and a waveguide hole in an upper flange plate of the energy transmission window to be arranged in a window sleeve of the energy transmission window, and the other centering piece penetrates through a centering hole in the lower side clamping plate and a waveguide hole in a lower flange plate to be arranged in the window sleeve of the energy transmission window; thus, the upper clamping plate can be aligned with the upper flange of the energy transmission window, and the other clamping plate can be aligned with the lower flange of the energy transmission window.

Before step S2, the method further includes: the positioning pins sequentially penetrate through the positioning holes on the two clamping plates to align the two clamping plates; the two clamping plates and the upper flange and the lower flange of the energy transmission window are more accurately positioned.

Further included after step S2 is: the screw rod sequentially penetrates through the connecting holes on the two clamping plates to fix the two clamping plates; at the moment, the two clamping plates are fixed with the energy transmission window, so that the position of the two clamping plates and the position of the energy transmission window are prevented from deviating.

Step S3: detecting the parallelism between the two clamping plates; specifically, detecting the parallelism between two splints, and if the parallelism is within the range of 0.03mm, indicating that the parallelism meets the condition;

step S4: taking out the two centering pieces; specifically, one centering piece is taken out from a centering hole on the upper side clamping plate and a waveguide hole of the upper flange plate of the energy transmission window, and the other centering piece is taken out from a centering hole on the lower side clamping plate and a waveguide hole of the lower flange plate of the energy transmission window.

The locating pin is then removed from the locating hole to form the structure shown in figure 2.

Step S5: and feeding the energy transmission window clamped and fixed by the two clamping plates into a furnace for welding. In the welding process, the centering piece does not participate in welding, so that the problems of poor parallelism, welding air leakage and the like caused by stress release in the welding process are reduced.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.