Detector module assembly tooling and assembly method

Abstract

This invention relates to the field of CT equipment technology, specifically disclosing a detector module assembly fixture and assembly method, comprising: a fixture body, wherein the fixture body has an assembly slot for mounting the detector module, the assembly slot including a first reference surface, a second reference surface, and a third reference surface that are perpendicular to each other, the first reference surface, the second reference surface, and the third reference surface being used to mate with the first positioning surface, the second positioning surface, and the third positioning surface of the crystal module mounting bracket of the detector module, respectively; the assembly slot also includes a fourth reference surface and a fifth reference surface, the fourth reference surface being used to mate with the fourth positioning surface of the crystal module of the detector module, and the fifth reference surface being used to mate with the fifth positioning surface of the collimator of the detector module; a fastening assembly, disposed on the fixture body, for ensuring that the first reference surface, the second reference surface, the third reference surface, the fourth reference surface, and the fifth reference surface are tightly mated with the first positioning surface, the second positioning surface, the third positioning surface, the fourth positioning surface, and the fifth positioning surface, respectively; and a first adjustment assembly, disposed on the fixture body, for adjusting the position of the crystal module and the collimator in the Z-axis direction. This invention solves the problems of low installation accuracy and difficulty in adjustment during the assembly of detector modules in related technologies, which affect detector performance.

Description

Technical Field

[0001] This invention relates to the field of medical device installation technology, and more specifically, to a detector module assembly tooling and assembly method. Background Technology

[0002] In the known architecture of a CT system, the detector is one of the core components, and its performance directly affects the overall performance of the machine. A key factor influencing detector performance is the positional relationship of the detector modules. The detector contains numerous detector modules, each composed of 1 to 16 or more crystal modules. It is essential that the center of each crystal module within the detector is aligned with the focal point of the X-ray tube.

[0003] As the number of crystal modules on a detector module increases, the assembly and debugging difficulty of the detector also increases significantly. Currently, most detectors on the market use locating pins as a reference point to install each detector module. Each detector module, in turn, uses its own locating pins as a reference point to install each crystal module. Due to the limitations of the locating pin position accuracy, the installation precision of existing detector modules cannot meet the image requirements. This results in the detector often failing to reach the ideal position during assembly and debugging, thus significantly impacting the detector's performance. Summary of the Invention

[0004] The main objective of this invention is to provide a detector module assembly tooling and assembly method to solve the problems of low installation accuracy, difficulty in adjustment, and impact on detector performance during the assembly of detector modules in related technologies.

[0005] To achieve the above objectives, the present invention provides a detector module assembly fixture, comprising:

[0006] The tooling body has a mounting slot for mounting a detector module. The mounting slot includes a first reference surface, a second reference surface, and a third reference surface that are perpendicular to each other. The first reference surface, the second reference surface, and the third reference surface are respectively used to fit with the first positioning surface, the second positioning surface, and the third positioning surface of the crystal module mounting bracket of the detector module.

[0007] The mounting slot also includes a fourth reference surface and a fifth reference surface. The fourth reference surface is used to fit with the fourth positioning surface of the crystal module of the detector module, and the fifth reference surface is used to fit with the fifth positioning surface of the collimator of the detector module.

[0008] The third, fourth, and fifth reference planes are all located on the same side of the mounting groove and are parallel to the Z-axis direction;

[0009] Fastening components are provided on the main body of the tooling to ensure that the first reference surface, the second reference surface, the third reference surface, the fourth reference surface, and the fifth reference surface are in close contact with the first positioning surface, the second positioning surface, the third positioning surface, the fourth positioning surface, and the fifth positioning surface, respectively.

[0010] The first adjustment component is located on the main body of the tooling and is used to adjust the position of the crystal module and the collimator in the Z-axis direction.

[0011] Furthermore, the first reference plane is a plane parallel to the X-axis direction, and the second reference plane is a plane parallel to the Y-axis direction.

[0012] Furthermore, the first reference plane is set to at least two and symmetrically distributed on both sides of the mounting groove.

[0013] Furthermore, the fastening components include:

[0014] The first fastener is provided on the main body of the tooling and located on the opposite side of the first reference plane;

[0015] The second fastener is provided on the main body of the tooling and located on the opposite side of the second reference plane;

[0016] The third fastener is provided on the main body of the tooling and located on the opposite side of the third reference plane;

[0017] The fourth fastener is provided on the main body of the tooling and located on the opposite side of the fourth reference plane;

[0018] The fifth fastener is provided on the main body of the tooling and located on the opposite side of the fifth reference plane.

[0019] Furthermore, the first, second, third, fourth, and fifth fasteners are all configured as fastening bolts that are threadedly connected to the main body of the tooling.

[0020] Furthermore, it also includes a second adjustment component, which is disposed on the tooling body and located on the opposite side of the fifth fastener. The second adjustment component is used to adjust the position of the collimator in the X-axis direction.

[0021] Furthermore, the first adjustment assembly includes at least two first precision micrometers and two sixth fasteners;

[0022] Two first precision microheads are located on opposite sides of the tooling body, and two sixth fasteners are located on opposite sides of the tooling body. One of the first precision microheads and one of the sixth fasteners are used on both sides of the corresponding crystal module, and the other of the first precision microheads and the other of the sixth fasteners are used on both sides of the corresponding collimator.

[0023] The second adjustment component includes a second precision micrometer head, which is located on the tooling body on the side close to the third reference surface and opposite to the fifth fastener.

[0024] Furthermore, it also includes a base plate, on both sides of which are provided columns, and on the upper end of each column are provided connecting holes. On both sides of the tooling body are provided connecting bolts, which are threadedly connected to the connecting holes.

[0025] According to another aspect of the present invention, a detector module assembly method is provided, employing the above-described detector module assembly fixture, and comprising the following steps:

[0026] Install the crystal module mounting bracket into the mounting slot of the tooling body, and make the first reference surface, the second reference surface, and the third reference surface correspond to the first positioning surface, the second positioning surface, and the third positioning surface of the crystal module mounting bracket, respectively;

[0027] Adjust the fastening assembly so that the first reference surface, the second reference surface, and the third reference surface are in close contact with the first positioning surface, the second positioning surface, and the third positioning surface, respectively.

[0028] Install the crystal module onto the crystal module mounting bracket, and align the fourth positioning surface of the crystal module with the fourth reference surface in all the mounting slots;

[0029] Adjust the fastening assembly so that the fourth positioning surface and the fourth reference surface are in close contact;

[0030] Adjust the first adjustment component so that the position of the crystal module on the Z-axis is at the set position;

[0031] Install the collimator onto the crystal module, and align the fifth positioning surface of the collimator with the fifth reference surface in the mounting slot;

[0032] Adjust the fastening assembly to ensure that the fifth positioning surface and the fifth reference surface are in close contact;

[0033] Adjust the first adjustment component so that the collimator is positioned at the set position on the Z-axis;

[0034] The crystal module mounting bracket, the crystal module, and the collimator are assembled together.

[0035] This invention achieves the following: positioning the crystal module mounting bracket using a first, second, and third reference plane; positioning the crystal module using a fourth reference plane; adjusting the crystal module's position in the Z-axis direction using a first adjustment component; positioning the collimator using a fifth reference plane; adjusting the collimator's position in the Z-axis direction using the first adjustment component; and finally assembling the crystal module mounting bracket, crystal module, and collimator. This eliminates the need for conventional positioning pins, freeing up adjustable space for each crystal module and collimator. Furthermore, it allows for simultaneous, high-precision installation and debugging of the crystal module and collimator, effectively increasing the efficiency of detector assembly and debugging, and reducing the labor and time costs associated with detector assembly and debugging. This solves the problems of low installation accuracy, difficult adjustment, and reduced detector performance in related technologies. Attached Figure Description

[0036] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention, making other features, objects, and advantages of the invention more apparent. The illustrative embodiments of the invention illustrated in the drawings and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0037] Figure 1 This is a schematic diagram of the assembly structure of the assembly tooling according to an embodiment of the present invention;

[0038] Figure 2 This is an exploded structural diagram of the assembly tooling according to an embodiment of the present invention;

[0039] Figure 3 This is an exploded structural diagram of a detector module according to an embodiment of the present invention;

[0040] Figure 4 This is a three-dimensional structural schematic diagram of the tooling body according to an embodiment of the present invention;

[0041] Figure 5 This is another three-dimensional structural schematic diagram of the tooling body according to an embodiment of the present invention;

[0042] Figure 6 This is an exploded structural diagram of the tooling body according to an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of a precision differential head according to an embodiment of the present invention;

[0044] The components include: 1. Tooling body; 101. Mounting slot; 111. First reference surface; 112. Second reference surface; 113. Third reference surface; 114. Fourth reference surface; 115. Fifth reference surface; 2. Detector module; 21. Crystal module mounting bracket; 211. First positioning surface; 212. Second positioning surface; 213. Third positioning surface; 22. Crystal module; 221. Fourth positioning surface; 23. Collimator; 231. Fifth positioning surface; 3. First adjustment component; 31. First precision micrometer head; 33. Sixth fastener; 4. Fastening component; 41. First fastener; 42. Second fastener; 43. Third fastener; 44. Fourth fastener; 45. Fifth fastener; 5. Second adjustment component; 51. Second precision micrometer head; 6. Base plate; 7. Column; 121. Main scale; 122. Sub-scale. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein.

[0047] In this invention, the terms "upper," "lower," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0048] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0049] Furthermore, the terms "set up," "equipped with," "connected," and "fixed" should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In addition, the term "multiple" should mean two or more.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] As the number of crystal modules on a detector module increases, the assembly and debugging difficulty of the detector also increases significantly. Currently, most detectors on the market use locating pins as a reference point to install each detector module. Each detector module, in turn, uses its own locating pins as a reference point to install each crystal module. Due to the limitations of the locating pin position accuracy, the installation precision of existing detector modules cannot meet the image requirements. This results in the detector often failing to reach the ideal position during assembly and debugging, thus significantly impacting the detector's performance.

[0053] To solve the above technical problems, such as Figures 1 to 6 As shown, an embodiment of the present invention provides a detector module 2 assembly fixture, comprising:

[0054] The tooling body 1 has a mounting groove 101 for mounting the detector module 2. The mounting groove 101 includes a first reference surface 111, a second reference surface 112 and a third reference surface 113 that are perpendicular to each other. The first reference surface 111, the second reference surface 112 and the third reference surface 113 are respectively used to fit with the first positioning surface 211, the second positioning surface 212 and the third positioning surface 213 of the crystal module mounting bracket 21 of the detector module 2.

[0055] The mounting slot 101 also includes a fourth reference surface 114 and a fifth reference surface 115. The fourth reference surface 114 is used to fit with the fourth positioning surface 221 of the crystal module 22 of the detector module 2, and the fifth reference surface 115 is used to fit with the fifth positioning surface 231 of the collimator 23 of the detector module 2.

[0056] The third reference plane 113, the fourth reference plane 114 and the fifth reference plane 115 are all located on the same side of the mounting groove 101 and are parallel to the Z-axis direction;

[0057] Fastening component 4 is provided on the tooling body 1 and is used to make the first reference surface 111, the second reference surface 112, the third reference surface 113, the fourth reference surface 114, and the fifth reference surface 115 tightly fit with the first positioning surface 211, the second positioning surface 212, the third positioning surface 213, the fourth positioning surface 221, and the fifth positioning surface 231, respectively.

[0058] The first adjustment component 3 is located on the tooling body 1 and is used to adjust the position of the crystal module 22 and the collimator 23 in the Z-axis direction.

[0059] In this embodiment, the detector module 2 mainly includes a crystal module mounting bracket 21, a crystal module 22, and a collimator 23, such as Figure 3 As shown, the connection is that the crystal module 22 is mounted on the crystal module mounting bracket 21, and the collimator 23 is mounted on the crystal module 22. To achieve precise assembly of the detector module 2, this embodiment uses a specific tooling body 1 in conjunction with corresponding fastening components 4 and a first adjustment component 3. Specifically, in this embodiment, the tooling body 1 is used to provide accurate installation positions for the crystal module mounting bracket 21, the crystal module 22, and the collimator 23. The tooling body 1 has a mounting groove 101, and at least a portion of the crystal module mounting bracket 21, the crystal module 22, and the collimator 23 should be accommodated in the mounting groove 101.

[0060] First, during assembly, the crystal module mounting bracket 21 is installed into the mounting slot 101. To position the crystal module mounting bracket 21, three reference surfaces are provided within the mounting slot 101, such as... Figure 4 As shown, these are the first reference plane 111, the second reference plane 112, and the third reference plane 113, which are perpendicular to each other and located on the X, Y, and Z axes, respectively. The specific positions and surface forms of the three reference planes can be designed according to the corresponding table on the crystal module mounting bracket 21, as shown below. Figure 3 As shown, in this embodiment, at least three surfaces on the crystal module mounting bracket 21 are selected as surfaces corresponding to three reference surfaces, namely the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213. In this embodiment, the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213 are also perpendicular to each other and are located in the X, Y, and Z axis directions, respectively. After the crystal module mounting bracket 21 is installed into the mounting slot 101, the first reference surface 111, the second reference surface 112, and the third reference surface 113 correspond to the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213, respectively. Then, the fastening assembly 4 can be adjusted so that the first reference surface 111, the second reference surface 112, and the third reference surface 113 abut against the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213, respectively, thereby completing the positioning of the crystal module mounting bracket 21 in three dimensions.

[0061] Then, the crystal module 22 can be installed onto the crystal module mounting bracket 21. It should be noted that the crystal module 22 and the crystal module mounting bracket 21 can be pre-assembled together, maintaining a certain amount of floating in the fastened position to facilitate adjustment during positioning. Alternatively, the crystal module 22 can be installed after the crystal module mounting bracket 21 is positioned within the fixture body 1. Since it is also necessary to position the crystal module 22 relative to the crystal module mounting bracket 21, a fourth reference surface 114 is provided within the mounting groove 101 in this embodiment to position the crystal module 22 in the X-axis direction. Correspondingly, the crystal module 22 has a fourth positioning surface 221 that matches the fourth reference surface 114. After the crystal module 22 is installed into the mounting slot 101, the fourth positioning surface 221 and the fourth reference surface 114 are opposite each other. The fourth positioning surface 221 and the fourth reference surface 114 can be tightly fitted by adjusting the fastening component 4, thereby positioning the crystal module 22 in the X-axis direction within the mounting slot 101, that is, determining the relative position of the crystal module 22 and the crystal module mounting bracket 21 in the X-axis direction. Then, the position of the crystal module 22 in the Z-axis direction can be adjusted by the first adjusting component 3 so that the relative position of the crystal module 22 and the crystal module mounting bracket 21 in the Z-axis direction meets the assembly requirements.

[0062] The crystal module 22 installed on the crystal module mounting bracket 21 can be one or more, such as Figure 3 As shown, in this embodiment, two crystal modules 22 are installed on a crystal module mounting bracket 21, and the two crystal modules 22 can be positioned by the above means.

[0063] Finally, the collimator 23 can be installed onto the crystal module 22. For this purpose, in this embodiment, a fifth reference surface 115 is also provided within the mounting slot 101, which positions the collimator 23 in the X-axis direction. Correspondingly, the collimator 23 has a fifth positioning surface 231 that matches the fifth reference surface 115. When the collimator 23 is installed into the mounting slot 101, the fifth positioning surface 231 and the fifth reference surface 115 are opposite each other. The fifth positioning surface 231 and the fifth reference surface 115 can be tightly fitted by adjusting the fastening assembly 4, thereby positioning the collimator 23 in the X-axis direction within the mounting slot 101, that is, determining the relative positions of the collimator 23, the crystal module 22, and the crystal module mounting bracket 21 in the X-axis direction. Then, the position of the collimator 23 in the Z-axis direction can be adjusted by the first adjusting assembly 3 so that the relative positions of the collimator 23, the crystal module 22, and the crystal module mounting bracket 21 in the Z-axis direction meet the assembly requirements.

[0064] In this embodiment, the assembly method of using positioning pins to position each component is eliminated. Instead, a specific reference surface and positioning surface are used to position the collimator 23, crystal module 22, and crystal module mounting bracket 21. Then, the positions of the crystal module 22 and collimator 23 in the Z-axis direction are adjusted by the first adjustable component 3 in the Z-axis direction, so that the collimator 23, crystal module 22, and crystal module mounting bracket 21 are in the set positions in the relative positions in the X-axis and Z-axis directions.

[0065] This invention eliminates the need for conventional positioning pins, thereby freeing up adjustable space for each crystal module 22 and collimator 23. It also enables the simultaneous and high-precision installation and debugging of the crystal module 22 and collimator 23, effectively increasing the assembly and debugging efficiency of the detector and reducing the labor and time costs of detector assembly and debugging. This solves the problem in related technologies where the detector module 2 has low installation accuracy and is difficult to adjust, affecting detector performance.

[0066] Additionally, it should be noted that in this embodiment, the X-axis and Z-axis are two mutually perpendicular directions on a horizontal plane, where the Z-axis is the long side direction of the crystal module 22 and the X-axis is the short side direction of the crystal module 22.

[0067] In one embodiment of the first reference surface 111, the second reference surface 112, and the third reference surface 113, the first reference surface 111 is a surface parallel to the X-axis direction, the second reference surface 112 is a surface parallel to the Y-axis direction, and the third reference surface 113 is a surface parallel to the Z-axis direction. Since different crystal modules 22 may differ when mounted on the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213, this embodiment does not restrict the surface contours or specific positions of the first reference surface 111, the second reference surface 112, and the third reference surface 113; a one-to-one correspondence is sufficient.

[0068] Since the first reference surface 111 is a surface along the X-axis, both ends of the crystal module mounting bracket 21 have corresponding first positioning surfaces 211 in this direction. Therefore, as follows: Figure 4 As shown, in this embodiment, the first reference surface 111 is set to at least two and symmetrically distributed on both sides of the mounting groove 101, which correspond to the first positioning surface 211 at both ends of the crystal module mounting bracket 21 respectively.

[0069] In this embodiment, the fastening component 4 serves to secure the crystal module mounting bracket 21, the crystal module 22, and the collimator 23 in the X-axis direction. Since different components need to be fastened, therefore, as... Figure 1 and Figure 2 As shown, the fastening component 4 in this embodiment includes:

[0070] The first fastener 41 is provided on the tooling body 1 and located on the opposite side of the first reference surface 111. By adjusting the first fastener 41, the first reference surface 111 and the first positioning surface 211 can be tightly fitted together.

[0071] The second fastener 42 is provided on the tooling body 1 and located on the opposite side of the second reference surface 112. By adjusting the second fastener 42, the second reference surface 112 and the second positioning surface 212 can be tightly fitted together.

[0072] The third fastener 43 is provided on the tooling body 1 and located on the opposite side of the third reference surface 113. By adjusting the third fastener 43, the third reference surface 113 and the third positioning surface 213 can be tightly fitted together.

[0073] The fourth fastener 44 is provided on the tooling body 1 and located on the opposite side of the fourth reference surface 114. By adjusting the fourth fastener 44, the fourth reference surface 114 and the fourth positioning surface 221 can be tightly fitted together.

[0074] The fifth fastener 45 is provided on the tooling body 1 and located on the opposite side of the fifth reference surface 115. By adjusting the fifth fastener 45, the fifth reference surface 115 and the fifth positioning surface 231 can be tightly fitted together.

[0075] In one embodiment of the fastener, the first fastener 41, the second fastener 42, the third fastener 43, the fourth fastener 44 and the fifth fastener 45 are all configured as fastening bolts that are threadedly connected to the tooling body 1. The corresponding fastening is completed by tightening the fastening bolts. Depending on the different positions, multiple fastening bolts can be provided. In this embodiment, there is no limitation on the number of fastening bolts.

[0076] In addition to positioning the collimator 23 in the X-axis direction using the fifth fastener 45, the assembly fixture in this embodiment also includes a second adjustment component 5 to facilitate adjustment of the collimator 23's position in the X-axis direction. The second adjustment component 5 is disposed on the fixture body 1 and located opposite the fifth fastener 45. The second adjustment component 5 is used to adjust the position of the collimator 23 in the X-axis direction. Specifically, when the collimator 23 is set in a position with a gap between the fifth reference surface 115 and the fifth positioning surface 231, the second adjustment component 5 can be adjusted before installing the collimator 23 so that the end face of the second adjustment component 5 located in the mounting groove 101 is in the set position. At this time, the end face serves as a reference surface that is tightly fitted with the fifth positioning surface 231, and then the fifth fastener 45 is used to make the fifth positioning surface 231 tightly fitted with the reference surface.

[0077] To facilitate precise adjustment of the positions of the crystal module 22 and collimator 23 in the Z-axis direction, such as Figure 6 As shown, the first adjustment component 3 in this embodiment includes at least two first precision micrometer heads 31 and two sixth fasteners 33;

[0078] Two first precision differential heads 31 are located on opposite sides of the tooling body 1, and two sixth fasteners 33 are located on opposite sides of the tooling body 1. One first precision differential head 31 and one sixth fastener 33 are used on opposite sides of the corresponding crystal module 22, and the other first precision differential head 31 and the other sixth fastener 33 are used on opposite sides of the corresponding collimator 23.

[0079] The second adjustment component 5 includes a second precision micrometer head 51, which is located on the tooling body 1 on the side close to the third reference surface 113 and is opposite to the fifth fastener 45.

[0080] Specifically, during installation, the end face position of the first precision micrometer head within the mounting slot 101 can be adjusted according to a preset position, making this end face a reference surface for positioning the crystal module 22 in the Z-axis direction. After installing the crystal module 22, the crystal module 22 is pressed against the end face of the first precision micrometer head 31 using the sixth fastener 33 on the opposite side. Similarly, the collimator 23 can be installed and positioned.

[0081] like Figure 7 As shown, the first precision micrometer head 31 and the second precision micrometer head 51 are the same, both including structures such as the main scale 121 and the secondary scale 122.

[0082] To facilitate the installation of the main body 1, the assembly fixture in this embodiment also includes a base plate 6. Columns 7 are provided on both sides of the base plate 6, and connecting holes are provided at the upper ends of the columns 7. Connecting bolts are provided on both sides of the main body 1, and the connecting bolts are threadedly connected to the connecting holes.

[0083] According to another aspect of the present invention, a method for assembling a detector module 2 is provided, employing the above-described detector module 2 assembly fixture, and comprising the following steps:

[0084] Install the crystal module mounting bracket 21 into the mounting slot 101 of the tooling body 1, and make the first reference surface 111, the second reference surface 112, and the third reference surface 113 correspond to the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213 of the crystal module mounting bracket 21, respectively.

[0085] Adjust the fastening assembly 4 so that the first reference surface 111, the second reference surface 112, and the third reference surface 113 are in close contact with the first positioning surface 211, the second positioning surface 212, and the third positioning surface 213, respectively.

[0086] Install the crystal module 22 onto the crystal module mounting bracket 21, and make the fourth positioning surface 221 of the crystal module 22 correspond to the fourth reference surface 114 in all the mounting slots 101;

[0087] Adjust the fastening assembly 4 to ensure that the fourth positioning surface 221 and the fourth reference surface 114 are in close contact;

[0088] Adjust the first adjustment component 3 so that the position of the crystal module 22 on the Z-axis is at the set position;

[0089] Install the collimator 23 onto the crystal module 22, and align the fifth positioning surface 231 of the collimator 23 with the fifth reference surface 115 in the mounting slot 101.

[0090] Adjust the fastening assembly 4 to ensure that the fifth positioning surface 231 and the fifth reference surface 115 are in close contact;

[0091] Adjust the first adjustment component 5 so that the collimator 23 is in the set position on the Z-axis;

[0092] Assemble the crystal module mounting bracket 21, the crystal module 22 and the collimator 23 together.

[0093] In this embodiment, the fastening assembly 4 includes: a first fastener 41, disposed on the tooling body 1 and located on the opposite side of the first reference surface 111, wherein adjusting the first fastener 41 enables the first reference surface 111 and the first positioning surface 211 to fit tightly together; a second fastener 42, disposed on the tooling body 1 and located on the opposite side of the second reference surface 112, wherein adjusting the second fastener 42 enables the second reference surface 112 and the second positioning surface 212 to fit tightly together; and a third fastener 43, disposed on the tooling body 1 and located on the third reference surface 112. On the opposite side of 3, by adjusting the third fastener 43, the third reference surface 113 and the third positioning surface 213 can be tightly fitted together; the fourth fastener 44 is provided on the tooling body 1 and located on the opposite side of the fourth reference surface 114, and by adjusting the fourth fastener 44, the fourth reference surface 114 and the fourth positioning surface 221 can be tightly fitted together; the fifth fastener 45 is provided on the tooling body 1 and located on the opposite side of the fifth reference surface 115, and by adjusting the fifth fastener 45, the fifth reference surface 115 and the fifth positioning surface 231 can be tightly fitted together.

[0094] The first adjustment component 3 includes at least two first precision microheads and two sixth fasteners 33; the two first precision microheads are located on opposite sides of the fixture body 1, and the two sixth fasteners 33 are located on opposite sides of the fixture body 1, one of the first precision microheads and one of the sixth fasteners 33 are respectively used for the two sides of the corresponding crystal module 22, and the other first precision microhead and the other sixth fastener 33 are respectively used for the two sides of the corresponding collimator 23; the second adjustment component 5 includes a second precision microhead 51, which is located on the side of the fixture body 1 near the third reference surface 113 and is opposite to the fifth fastener 45.

[0095] During assembly, first, the crystal module mounting bracket 21 is installed into the mounting slot 101 of the tooling body 1. Then, the position of the crystal module mounting bracket 21 is positioned using the first fastener 41, the second fastener 42, and the third fastener 43, respectively. Next, the crystal module 22 is installed onto the crystal module mounting bracket 21. First, the position of the crystal module 22 in the X-axis direction is positioned using the fourth fastener 44. Then, the corresponding reference surface of the crystal module 22 in the Z-axis direction is adjusted using the corresponding first precision micrometer head. Finally, the crystal module 22 is secured against the first precision micrometer head using the sixth fastener 33. Then, the collimator 23 is installed onto the crystal module 22. First, the position of the collimator 23 in the X-axis direction is positioned using the fifth fastener 45. Then, the corresponding reference surface of the crystal module 22 in the Z-axis direction is adjusted using the corresponding first precision micrometer head. Finally, the collimator 23 is secured against the first precision micrometer head using the sixth fastener 33. Finally, the crystal module mounting bracket 21, the crystal module 22, and the collimator 23 are assembled together using the corresponding connectors.

[0096] In this embodiment, the assembly method of using positioning pins to position each component is eliminated. Instead, a specific reference surface and positioning surface are used to position the collimator 23, crystal module 22, and crystal module mounting bracket 21. Then, the positions of the crystal module 22 and collimator 23 in the Z-axis direction are adjusted by the first adjustable component 3 in the Z-axis direction, so that the collimator 23, crystal module 22, and crystal module mounting bracket 21 are in the set positions in the relative positions in the X-axis and Z-axis directions.

[0097] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A detector module assembly fixture, characterized in that, include: The tooling body has a mounting slot for mounting a detector module. The mounting slot includes a first reference surface, a second reference surface, and a third reference surface that are perpendicular to each other. The first reference surface, the second reference surface, and the third reference surface are respectively used to fit with the first positioning surface, the second positioning surface, and the third positioning surface of the crystal module mounting bracket of the detector module. The mounting slot also includes a fourth reference surface and a fifth reference surface. The fourth reference surface is used to fit with the fourth positioning surface of the crystal module of the detector module, and the fifth reference surface is used to fit with the fifth positioning surface of the collimator of the detector module. The third, fourth, and fifth reference planes are all located on the same side of the mounting groove and are parallel to the Z-axis direction; Fastening components are provided on the main body of the tooling to ensure that the first reference surface, the second reference surface, the third reference surface, the fourth reference surface, and the fifth reference surface are in close contact with the first positioning surface, the second positioning surface, the third positioning surface, the fourth positioning surface, and the fifth positioning surface, respectively. The first adjustment component is located on the main body of the tooling and is used to adjust the position of the crystal module and the collimator in the Z-axis direction.

2. The detector module assembly fixture according to claim 1, characterized in that, The first reference plane is a plane parallel to the X-axis direction, and the second reference plane is a plane parallel to the Y-axis direction.

3. The detector module assembly fixture according to claim 1, characterized in that, The first reference plane is set to at least two and symmetrically distributed on both sides of the mounting groove.

4. The detector module assembly fixture according to claim 1, characterized in that, The fastening assembly includes: The first fastener is provided on the main body of the tooling and located on the opposite side of the first reference plane; The second fastener is provided on the main body of the tooling and located on the opposite side of the second reference plane; The third fastener is provided on the main body of the tooling and located on the opposite side of the third reference plane; The fourth fastener is provided on the main body of the tooling and located on the opposite side of the fourth reference plane; The fifth fastener is provided on the main body of the tooling and located on the opposite side of the fifth reference plane.

5. The detector module assembly fixture according to claim 4, characterized in that, The first, second, third, fourth, and fifth fasteners are all configured as fastening bolts that are threadedly connected to the main body of the tooling.

6. The detector module assembly fixture according to claim 4, characterized in that, It also includes a second adjustment component, which is disposed on the tooling body and located on the opposite side of the fifth fastener. The second adjustment component is used to adjust the position of the collimator in the X-axis direction.

7. The detector module assembly fixture according to claim 6, characterized in that, The first adjustment assembly includes at least two first precision micrometers and two sixth fasteners; Two first precision microheads are located on opposite sides of the tooling body, and two sixth fasteners are located on opposite sides of the tooling body. One of the first precision microheads and one of the sixth fasteners are used on both sides of the corresponding crystal module, and the other of the first precision microheads and the other of the sixth fasteners are used on both sides of the corresponding collimator.

8. The detector module assembly fixture according to claim 6, characterized in that, The second adjustment component includes a second precision micrometer head, which is located on the tooling body on the side close to the third reference surface and opposite to the fifth fastener.

9. The detector module assembly fixture according to any one of claims 1 to 8, characterized in that, It also includes a base plate, on both sides of which are provided columns, and on the upper end of each column is provided a connecting hole. On both sides of the tooling body are provided connecting bolts, and the connecting bolts are threadedly connected to the connecting holes.

10. A method for assembling a detector module, characterized in that, The detector module assembly fixture as described in any one of claims 1 to 9 is used, and the following steps are performed: Install the crystal module mounting bracket into the mounting slot of the tooling body, and make the first reference surface, the second reference surface, and the third reference surface correspond to the first positioning surface, the second positioning surface, and the third positioning surface of the crystal module mounting bracket, respectively; Adjust the fastening assembly so that the first reference surface, the second reference surface, and the third reference surface are in close contact with the first positioning surface, the second positioning surface, and the third positioning surface, respectively. Install the crystal module onto the crystal module mounting bracket, and align the fourth positioning surface of the crystal module with the fourth reference surface in all the mounting slots; Adjust the fastening assembly so that the fourth positioning surface and the fourth reference surface are in close contact; Adjust the first adjustment component so that the position of the crystal module on the Z-axis is at the set position; Install the collimator onto the crystal module, and align the fifth positioning surface of the collimator with the fifth reference surface in the mounting slot; Adjust the fastening assembly to ensure that the fifth positioning surface and the fifth reference surface are in close contact; Adjust the first adjustment component so that the collimator is positioned at the set position on the Z-axis; The crystal module mounting bracket, the crystal module, and the collimator are assembled together.

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