X-ray tube welding positioning device

Abstract

The utility model discloses an X-ray tube welding positioning device which comprises a fixing platform assembly, a cathode shell clamping assembly and a laser ranging assembly, and the fixing platform assembly is used for fixing an anode shell assembly to be welded; the cathode shell clamping assembly is installed on the fixing platform assembly and used for clamping a cathode shell assembly to be welded and descending the cathode shell assembly to the welding position where the cathode shell assembly and the anode shell assembly are welded. And the laser ranging assembly is used for measuring a first height difference between the laser ranging assembly and the anode shell assembly and measuring a second height difference between the laser ranging assembly and the cathode shell assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of X-ray tube, in particular to an X-ray tube welding positioning device. BACKGROUND

[0002] X-ray tube is a device for generating X-rays, in which the X-rays are generated by the impact of the filament on the anode target disc. The dose of X-rays has a direct impact on the quality of CT imaging, and there are many factors affecting the dose of X-rays, among which the size and position of the focal point formed by the impact of the filament on the anode target disc are particularly important, which directly determines the dose of X-rays. Further, the relative position of the filament and the anode target disc is the core element affecting the quality of the focal point. When welding the X-ray tube, the relative position of the filament and the anode target disc is usually ensured by relying on the size of the tooling, however, the machining error of the tooling parts and the cumulative error in the assembly process can have a great impact on the relative position of the filament and the anode target disc.

[0003] In the current welding process of X-ray tube, the anode shell assembly (including the anode target disc) is generally fixed, and then the cathode shell assembly (including the filament) is moved or placed according to a unified standard size, or the cathode shell assembly is moved by manual method to complete the welding of the X-ray tube shell. However, this welding method has the following disadvantages: 1) The clamping of the cathode shell assembly each time can cause the instability of the position of the filament, even if the unified standard size is used for moving or placing, the consistency of the relative position of the filament and the anode target disc cannot be effectively ensured, thereby affecting the quality of the welded product. 2) The manual movement of the cathode shell assembly not only has low efficiency, but also the position accuracy of the filament and the anode target disc is difficult to be effectively guaranteed.

[0004] In view of the technical problem in the prior art that the relative position of the filament and the anode target disc cannot be accurately positioned when the X-ray tube is welded, resulting in low welding precision, no effective solution has been proposed so far. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a kind of X-ray tube welding positioning device, to at least solve the technical problem of existing X-ray tube welding in prior art that the relative position of the filament and the anode target disc cannot be accurately positioned, resulting in low welding precision.

[0006] According to the present application, an X-ray tube welding positioning device is provided, comprising: a fixed platform assembly, a cathode shell clamping assembly, and a laser ranging assembly, wherein the fixed platform assembly is used to fix an anode shell assembly to be welded; the cathode shell clamping assembly is installed on the fixed platform assembly and is used to clamp the cathode shell assembly to be welded and to lower the cathode shell assembly to a welding position for welding with the anode shell assembly; and the laser ranging assembly is used to measure a first height difference between the anode shell assembly and to measure a second height difference between the cathode shell assembly.

[0007] Optionally, the cathode shell clamping assembly comprises a lifting platform and a cathode shell clamp, wherein the lifting platform is installed on the fixed platform assembly; and the cathode shell clamp is connected with the lifting platform to move up and down in a vertical direction under the driving of the lifting platform.

[0008] Optionally, the laser ranging assembly comprises a column and a laser range finder, wherein the column is installed on the fixed platform assembly; and the laser range finder is rotatably fixed on the column to rotate to or away from the moving path of the cathode shell clamp by rotating around the column.

[0009] Optionally, the fixed platform assembly is provided with a fixing groove for the anode shell assembly at a position corresponding to the cathode shell clamp.

[0010] Optionally, the groove surface of the fixing groove comprises a circular-arc groove surface matching the profile of the anode shell assembly.

[0011] Optionally, the fixed platform assembly is provided with a boss at a position adjacent to the circular-arc groove surface.

[0012] Optionally, the boss is provided with a positioning pin, and the fixing groove is provided with through holes on both sides.

[0013] The utility model provides a kind of X-ray tube welding positioning device integrated with fixed platform assembly, cathode shell clamping assembly and laser ranging assembly, high-precision positioning in X-ray tube welding process is realized.Specifically, X-ray tube welding positioning device can be fixed by fixed platform assembly Anode shell assembly (including anode target disc) to be welded, provide stable reference for subsequent welding operation.Through the cathode shell clamping assembly installed on fixed platform assembly, the cathode shell assembly (including filament) to be welded is clamped, and the cathode shell assembly is lowered to the welding position for welding with anode shell assembly.In each welding of X-ray tube, the first height difference between laser ranging assembly and anode shell assembly is measured by laser ranging assembly, and the second height difference between laser ranging assembly and cathode shell assembly is measured, accurate adjustment information is provided for cathode shell clamping assembly, the problem of inconsistent distance caused by each cathode shell assembly clamping is avoided, to ensure that the filament in cathode shell assembly and the anode target disc in anode shell assembly can keep correct relative position in welding process, so that accurate positioning of relative position of filament and anode target disc in welding process is realized, ensure that X-ray tube focal point size, position meet theoretical requirements, significantly improve the precision and stability of X-ray tube welding.Further solve the technical problems of low welding precision caused by the fact that the relative position of filament and anode target disc cannot be accurately positioned in X-ray tube welding in the prior art.

[0014] The above and other objects, advantages and features of the present utility model will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] Some embodiments of the present application will be described in detail with reference to the drawings, wherein the same or like components have the same or similar reference numbers. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

[0016] Figure 1 is a schematic view of the X-ray tube welding positioning device according to an embodiment of the present application;

[0017] Figure 2 is another schematic view of the X-ray tube welding positioning device according to an embodiment of the present application;

[0018] Figure 3 is another schematic view of the X-ray tube welding positioning device according to an embodiment of the present application;

[0019] Figure 4 is Figure 3 a schematic side view of the X-ray tube welding positioning device shown in FIG.

[0020] Figure 5 is Figure 3 is a schematic cross-sectional view of an X-ray tube welding positioning device as shown in

[0021] Figure 6 is a further schematic view of an X-ray tube welding positioning device according to embodiments of the present application;

[0022] Figure 7 is a further schematic view of an X-ray tube welding positioning device according to embodiments of the present application; DETAILED DESCRIPTION

[0023] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.

[0027] This application provides an X-ray tube welding positioning device 100, including: a fixed platform assembly 110, a cathode housing clamping assembly 120, and a laser ranging assembly 130, wherein the fixed platform assembly 110 is used to fix the anode housing assembly 200 to be welded; the cathode housing clamping assembly 120 is mounted on the fixed platform assembly 110 and is used to clamp the cathode housing assembly 300 to be welded and lower the cathode housing assembly 300 to a welding position for welding with the anode housing assembly 200; and the laser ranging assembly 130 is used to measure a first height difference between itself and the anode housing assembly 200, and to measure a second height difference between itself and the cathode housing assembly 300.

[0028] Specifically, refer to Figure 1 , Figure 2 and Figure 3 As shown, the X-ray tube welding positioning device 100 includes a fixed platform assembly 110, a cathode housing clamping assembly 120, and a laser ranging assembly 130. The fixed platform assembly 110 is used to fix the anode housing assembly 200, which includes an anode target disk, to be welded, providing a stable reference for subsequent welding operations. The cathode housing clamping assembly 120 is mounted on the fixed platform assembly 110 and is used to clamp the cathode housing assembly 300, which includes a filament, to be welded, and to lower the cathode housing assembly 300 to the welding position for welding with the anode housing assembly 200. The laser ranging component 130 is mounted on the fixed platform component 110 and is used to measure the first height difference between the laser ranging component 130 and the anode housing component 200, and the second height difference between the laser ranging component 130 and the cathode housing component 300. This provides precise adjustment information for the cathode housing clamping component 120, avoiding the problem of inconsistent distance caused by clamping the cathode housing component 300 each time. This ensures that the filament in the cathode housing component 300 and the anode target disk in the anode housing component 200 can maintain the correct relative position during the welding process. This achieves precise positioning of the relative position of the filament and the anode target disk during the welding process, completes the argon arc welding of the X-ray tube cathode housing component 300 and the anode housing component 200, ensures that the focal spot size and position of the X-ray tube meet the theoretical requirements, and significantly improves the accuracy and stability of X-ray tube welding.

[0029] Optionally, the cathode housing clamping assembly 120 includes a lifting platform 121 and a cathode housing clamp 122, wherein the lifting platform 121 is mounted on the fixed platform assembly 110; and the cathode housing clamp 122 is connected to the lifting platform 121, thereby moving vertically under the drive of the lifting platform 121.

[0030] Specifically, refer to Figure 1 , Figure 2 and Figure 3As shown, the cathode shell clamping assembly 120 comprises a lifting platform 121 and a cathode shell clamp 122. The lifting platform 121 is mounted on the fixed platform assembly 110 to provide a solid support for the cathode shell clamp 122. The cathode shell clamp 122 is connected with the lifting platform 121, so as to be driven by the lifting platform 121 to move vertically, thereby driving the cathode shell assembly 300 to move vertically, so as to accurately control the vertical distance dimension between the cathode shell assembly 300 and the anode shell assembly 200.

[0031] Optionally, the laser ranging assembly 130 comprises a column 131 and a laser range finder 132, wherein the column 131 is mounted on the fixed platform assembly 110; and the laser range finder 132 is rotatably fixed on the column 131, so as to be rotated to or away from the moving path of the cathode shell clamp 122 by rotating around the column 131.

[0032] Specifically, referring to Figure 1 , Figure 2 and Figure 3 , the laser ranging assembly 130 comprises a column 131 and a laser range finder 132. The column 131 is mounted on the fixed platform assembly 110 to provide a solid support point for the laser range finder 132. The laser range finder 132 is rotatably fixed on the column 131, so as to be rotated to or away from the moving path of the cathode shell clamp 122 by rotating around the column 131. That is, the laser range finder 132 can be freely rotated around the column 131, which can be rotated to the moving path of the cathode shell clamp 122 for accurate measurement, and can be easily rotated away from the moving path after the measurement is completed, so as to avoid any obstruction when the cathode shell assembly 300 and the anode shell assembly 200 are subjected to argon arc welding. In this way, not only the flexibility of measurement is improved, but also the smooth progress of the welding process is ensured.

[0033] Optionally, the fixed platform assembly 110 is provided with a fixed groove 111 for the anode shell assembly 200 at a position corresponding to the cathode shell clamp 122.

[0034] Specifically, referring to Figure 1 , Figure 2 and Figure 3As shown, the fixed platform assembly 110 is provided with a fixed groove 111 for the anode shell assembly 200 at a position corresponding to the cathode shell clamp 122. The fixed groove 111 provides an accurate placement position for the anode shell assembly 200 and can ensure that the anode shell assembly 200 remains stable during the welding process. Through the fixed groove 111, the operator can more quickly and accurately position the anode shell assembly 200, thereby simplifying the preparation work before welding and improving work efficiency. In addition, the fixed groove 111 can also protect the anode shell assembly 200 to a certain extent from external factors, such as preventing it from being displaced or damaged due to accidental touching during the welding process.

[0035] Optionally, referring to Figure 1 and Figure 2 As shown, the groove surface of the fixed groove 111 includes a circular-arc groove surface 112 that matches the profile of the anode shell assembly 200 for installation of the anode shell assembly 200.

[0036] Optionally, the fixed platform assembly 110 is provided with a boss 113 at a position adjacent to the circular-arc groove surface 112.

[0037] In particular, referring to Figure 1 and Figure 2 As shown, the fixed platform assembly 110 is provided with a boss 113 at a position adjacent to the circular-arc groove surface 112. The boss 113 can serve as an auxiliary positioning point when the anode shell assembly 200 is placed in the fixed groove 111. When the anode shell assembly 200 is placed in the fixed groove 111, part of its structure can come into contact with the boss 113, thereby helping the operator to more accurately position the anode shell assembly and ensuring that it is completely fitted on the circular-arc groove surface 112.

[0038] In addition, the presence of the boss 113 can also effectively prevent the anode shell assembly 200 from slipping during the welding process. When the anode shell assembly is fixed in the fixed groove 111, the boss 113 can serve as an additional support point to increase the stability of the anode shell assembly and prevent it from moving due to vibration or external force during the welding process.

[0039] Optionally, the boss 113 is provided with a positioning pin 114, and the fixed groove 111 is provided with through holes 115 on both sides.

[0040] In particular, referring to Figure 1 and Figure 2 As shown, the boss 113 is provided with a positioning pin 114, and the anode shell assembly 200 can be completely positioned through the positioning pin 114 and the boss 113. After positioning the anode shell assembly 200, an M5 bolt is installed in the through hole 115 for fastening.

[0041] The following will be combined with Figures 1 to 7, the process of welding the X-ray tube is given, and the specific steps are as follows:

[0042] (1) Install the anode shell assembly 200 to the fixed platform assembly 110 as shown in Figure 1 , use the positioning pin 114 for preliminary positioning, and then use the M5 bolt to insert the through hole 115 for fastening to position and fix the anode shell assembly 200, as shown in Figure 2 .

[0043] (2) Install the cathode shell assembly 300 to the cathode shell clamp 122. In order to ensure the alignment between the two, align the scale line 1221 on the cathode shell clamp 122 with the scale line on the cathode shell assembly 300, and use the M5 bolt to lock the cathode shell assembly 300 on the cathode shell clamp 122, as shown in Figure 3 and Figure 4 ;

[0044] (3) Turn on the laser distance meter 132 and measure the anode target plate of the anode shell assembly 200 and the filament of the cathode shell assembly 300 respectively. By measuring, the first height difference X1 between the laser distance meter 132 and the anode shell assembly 200, and the second height difference X2 between the laser distance meter 132 and the cathode shell assembly 300 can be obtained, as shown in Figure 5 . After the measurement is completed, in order to avoid interference of the laser distance meter 132 during the welding process, the laser distance meter 132 needs to be turned away from the path of the downward movement of the cathode shell assembly 300, as shown in Figure 6 .

[0045] The first height difference X1 is specifically the vertical distance from the center horizontal line of the laser distance meter 132 to the anode target plate of the anode shell assembly 200. The second height difference X2 is specifically the vertical distance from the center horizontal line of the laser distance meter 132 to the filament of the cathode shell assembly 300.

[0046] (4) Record the first height difference X1 and the second height difference X2 through the pre-designed computer control program, and calculate the difference H between the sum of the two height differences and the pre-set theoretical distance A of the filament to the anode target plate (i.e. H = X1 + X2 - A) as the downward movement distance of the cathode shell assembly 300, in order to ensure the relative position accuracy between the filament and the anode target plate;

[0047] (5) The computer control program controls the start of the speed reducer of the lifting platform 121 to drive the lifting platform 121 to drive the cathode shell clamp 122 and the cathode shell assembly 300 to move downward by a distance H. When the cathode shell assembly 300 reaches the correct position, the circumferential argon arc welding device is started to weld the cathode shell assembly 300 and the anode shell assembly 200, as shown in Figure 7 . Thus, the welding process of the X-ray tube is completed.

[0048] In addition, in the embodiment, since the filament is soft and easy to be damaged, a non-contact laser measurement mode is adopted, which is effective and direct and can ensure high-precision measurement results.

[0049] Compared with the existing X-ray tube welding device, the device has the following advantages:

[0050] 1) The relative distance between the filament and the anode target plate is measured by the high-precision infrared laser range finder each time the X-ray tube is welded, the size is converted by the program to obtain the data of the downward movement of the cathode shell assembly 300, the problem of inconsistent distance each time the clamping is caused by setting a single data is avoided, and the welding precision is improved.

[0051] 2) The program converts the data measured by the infrared laser range finder, moves the cathode shell assembly 300 to the theoretical position by the reduction motor, ensures the theoretical distance between the filament and the anode target plate, and greatly improves the welding efficiency of the product.

[0052] 3) Application program control, the reduction motor is given a moving distance instruction, the manual operation error is reduced, and the welding efficiency is improved.

[0053] In summary, the utility model discloses a kind of X-ray tube welding positioning device integrated fixed platform assembly, cathode shell clamping assembly and laser ranging assembly, high-precision positioning in the X-ray tube welding process is realized.Specifically, X-ray tube welding positioning device can be fixed by fixed platform assembly Anode shell assembly (including anode target disc) to be welded, provide stable reference for subsequent welding operation.By installing cathode shell clamping assembly on fixed platform assembly, clamping cathode shell assembly (including filament) to be welded, and cathode shell assembly is lowered to the welding position for welding with anode shell assembly.In each welding of X-ray tube, the first height difference between laser ranging assembly and anode shell assembly is measured by laser ranging assembly, and the second height difference between laser ranging assembly and cathode shell assembly is measured, to provide accurate adjustment information for cathode shell clamping assembly, avoid the problem of inconsistent distance caused by each cathode shell assembly clamping, to ensure that the filament in cathode shell assembly and the anode target disc in anode shell assembly can keep correct relative position in the welding process, so as to realize accurate positioning of relative position of filament and anode target disc in welding process, ensure that X-ray tube focal point size, position meet theoretical requirements, significantly improve the precision and stability of X-ray tube welding.Furthermore, the technical problem that relative position of filament and anode target disc cannot be accurately positioned in X-ray tube welding in prior art, resulting in low welding precision is solved.

[0054] Unless specifically stated otherwise, the relative arrangements of parts and steps, numerical expressions, and numerical values set forth in the examples herein are not intended to limit the scope of the present application. It will be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale, and that for clarity certain components can be shown exaggerated in scale or with artificial shading in order to illustrate their unique features. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail but can be assumed by those of ordinary skill in the art to be part of the present application. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation on the scope of the exemplary embodiments. Thus, other example embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0055] For purposes of the description hereinafter, spatial terms, such as "above", "below", "upper", "lower", and the like, can be used with reference to the illustrated orientation of one device or component with respect to another device or component, as illustrated in the figures. It will be appreciated that the spatial terms are intended to encompass different orientations of the device or component in use or operation in addition to the orientation depicted in the figures. For example, if the device or component is inverted or rotated 90° or at other orientations, the spatial terms "above", "below", "upper", "lower", and the like, can include the orientations shown in the figures, as well as other possible orientations. Accordingly, the exemplary terms "above" and "below" can include both conditions where the device above or below other devices or components based on the orientation as shown in the figures, and also where the device is located below or above other devices or components, based on a different orientation. The devices can also be oriented in other ways (rotated at other angles, etc.) and the spatial terms used herein interpreted accordingly.

[0056] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0057] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope of the claims.

Claims

1. An X-ray tube welding positioning device (100), characterized in that, include: The components include a fixed platform assembly (110), a cathode housing clamping assembly (120), and a laser ranging assembly (130), wherein... The fixed platform assembly (110) is used to fix the anode housing assembly (200) to be welded; The cathode housing clamping assembly (120) is mounted on the fixed platform assembly (110) for clamping the cathode housing assembly (300) to be welded and lowering the cathode housing assembly (300) to the welding position for welding with the anode housing assembly (200); as well as The laser ranging component (130) is used to measure a first height difference with the anode housing assembly (200) and a second height difference with the cathode housing assembly (300).

2. The X-ray tube welding positioning device (100) according to claim 1, characterized in that, The cathode housing clamping assembly (120) includes a lifting platform (121) and a cathode housing clamp (122), wherein The lifting platform (121) is mounted on the fixed platform assembly (110); and The cathode housing clamp (122) is connected to the lifting platform (121), thereby moving up and down in the vertical direction under the drive of the lifting platform (121).

3. The X-ray tube welding positioning device (100) according to claim 2, characterized in that, The laser ranging component (130) includes a column (131) and a laser rangefinder (132), wherein The column (131) is mounted on the fixed platform assembly (110); and The laser rangefinder (132) is rotatably fixed to the column (131), thereby rotating into or out of the movement path of the cathode housing clamp (122) by rotating around the column (131).

4. The X-ray tube welding positioning device (100) according to claim 2, characterized in that, The fixed platform assembly (110) is provided with a fixing groove (111) for the anode housing assembly (200) at a position corresponding to the cathode housing clamp (122).

5. The X-ray tube welding positioning device (100) according to claim 4, characterized in that, The groove surface of the fixing groove (111) includes an arc-shaped groove surface (112) that is adapted to the contour of the anode housing assembly (200).

6. The X-ray tube welding positioning device (100) according to claim 5, characterized in that, The fixed platform assembly (110) has a boss (113) at the position adjacent to the arc-shaped groove surface (112).

7. The X-ray tube welding positioning device (100) according to claim 6, characterized in that, The boss (113) is provided with a positioning pin (114), and the fixing groove (111) is provided with through holes (115) on both sides.

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