Reshaping tool for CT machine barrel flange ring

Abstract

The utility model discloses a CT machine barrel flange ring shaping tool which comprises a shaping assembly and a shaping support. The shaping assembly comprises a driving part, a movable mold and a fixed mold; the driving part and the fixed mold are arranged on the mounting seat; parting surfaces of the movable mold and the fixed mold are arc surfaces matched with the contour of the flange ring; the shaping support is provided with a supporting piece used for supporting a flange ring workpiece, and the vertex of the supporting piece is not lower than the upper surface of the mounting base. And the inner side of the flange ring is in contact with the parting surface on the fixed mold, the output end of the driving part is connected with the movable mold and drives the movable mold to move towards the fixed mold until the parting surface is closed, and contour shaping of the flange ring in the parting surface is completed. Quantitative acting force is applied to each arc section or arc surface of the flange ring through the matching of the movable mold and the fixed mold; according to the sectional type pressing and shaping technology, it can be guaranteed that acting force is evenly distributed on the arc section within the coverage range of the movable die and the fixed die, the profile tolerance after shaping is remarkably improved, and the high-precision shaping effect on the flange ring or the arc section is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology, and in particular relates to a tooling for shaping the flange ring of a CT scanner cylinder. Background Technology

[0002] In the field of modern medical equipment manufacturing, especially in the production of computed tomography (CT) scanners, extremely high precision is required for the machine's outer casing. Within the CT scanner's casing, the circular support is a key structural component, with a "U"-shaped cross-section. This design provides the support with a certain degree of rigidity and stability. However, due to the support's concave-convex surface structure, after being rolled into a flange ring, it must undergo a series of surface processing treatments such as welding, electroplating, and spraying. These processing steps, as well as subsequent transportation, inevitably apply varying degrees of force to the flange ring's surface, causing changes in the flange ring's profile that exceed the allowable range of forming errors.

[0003] like Figure 1 The existing technology typically uses three rollers to simultaneously apply force to the inner and outer surfaces of the flange ring to restore its circular shape. While this technology can improve the shape of the flange ring to some extent, long-term use has shown that its profile accuracy can only reach ±2, which is far from meeting the manufacturing standards for the complex and highly precise casing of a CT scanner. The profile error of the circular support of a CT scanner must be controlled within ±1 to ensure the normal operation of the equipment and image quality.

[0004] The reason why the flange ring profile does not meet the standard in the existing technology is that the rolling processing method used in the existing technology actually rolls each point or line segment in the flange ring. However, the points or line segments in the flange ring structure are not on the same plane, so the distribution of the force acting on the flange ring is uneven, and high-precision shaping cannot be achieved.

[0005] To address the aforementioned issues, designing a CT scanner cylinder flange ring shaping fixture is a crucial technical problem that those skilled in the art need to solve. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a CT scanner cylinder flange ring shaping fixture.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] The CT machine cylinder flange ring shaping tooling includes a shaping assembly and a shaping support; the shaping assembly includes a driving part, a movable die and a fixed die, the driving part and the fixed die are arranged on a mounting seat; the parting surface of the movable die and the fixed die is a circular arc surface matched with the profile of the flange ring; the shaping support is provided with a support part for supporting the flange ring workpiece, and the vertex of the support part is not lower than the upper surface of the mounting seat; the inner side of the flange ring is in contact with the parting surface on the fixed die, the output end of the driving part is connected with the movable die and drives the movable die to move towards the fixed die until the parting surface is closed, and the profile shaping of the flange ring in the parting surface is completed.

[0009] Preferably, the parting surface on the movable die and the fixed die is formed with a concave-convex structure matched with each other.

[0010] Preferably, the distance between the parting surface and the center point of the shaping bracket is 85% of the radius of the flange ring.

[0011] Preferably, the support part has at least three; the support part is a roller, the setting direction of the roller is arranged along the diameter direction of the flange ring, and all the contact points between the flange ring and the support part are located inside or outside the highest point of the roller.

[0012] Preferably, the support part includes a roller and a limiting block; the roller is arranged along the circumferential direction of the flange ring; the limiting block is located between two adjacent rollers, at least two, and is symmetrically arranged on the outer periphery of the flange ring.

[0013] Preferably, the support part is a universal ball, and all the contact points between the flange ring and the support part are located inside or outside the highest point of the universal ball.

[0014] Preferably, the support part has four, and the four support parts are arranged in a central symmetry.

[0015] Preferably, the driving part is a gas cylinder or an oil cylinder or a linear motor.

[0016] The advantages of the technical scheme of the utility model mainly embody in:

[0017] By cooperation of the movable die and the fixed die, a quantitative force is applied to each circular arc segment or circular arc surface of the flange ring; the segmented pressing and shaping technology can ensure that the force is uniformly distributed on the circular arc segment within the coverage range of the movable die and the fixed die, thereby significantly improving the profile after shaping and realizing high-precision shaping effect on the flange ring or the circular arc segment.

[0018] By the concave-convex structure, the force is uniformly distributed on the circular arc segment within the coverage range of the movable die and the fixed die, thereby significantly improving the profile after shaping and realizing high-precision shaping effect on the flange ring or the circular arc segment.

[0019] The distance between the parting surface and the center point of the shaping bracket is designed as 85% of the flange ring radius, so that the elastic rebound range of the material is applied with a quantitative force on each circular segment or circular surface of the flange ring after the dynamic mold and the fixed mold are matched in the machining process, so that the flange ring still has a required profile after the material rebounds. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure diagram of the background technology of the utility model;

[0021] Figure 2 The front view of the first embodiment of the utility model;

[0022] Figure 3 The top view of the first embodiment of the utility model;

[0023] Figure 4 The front view of the second embodiment of the utility model;

[0024] Figure 5 The top view of the second embodiment of the utility model;

[0025] Figure 6 The front view of the third embodiment of the utility model;

[0026] Figure 7 The top view of the third embodiment of the utility model;

[0027] Figure 8 The front view of the initial state of the first embodiment of the utility model;

[0028] Figure 9 The top view of the initial state of the first embodiment of the utility model;

[0029] Figure 10 The front view of the shaping state of the first embodiment of the utility model;

[0030] Figure 11 The top view of the shaping state of the first embodiment of the utility model;

[0031] Figure 12 The front view of the rotating state of the first embodiment of the utility model;

[0032] Figure 13 The top view of the rotating state of the first embodiment of the utility model. DETAILED DESCRIPTION

[0033] The purposes, advantages and characteristics of the utility model will be illustrated and explained through the following non-restrictive description of preferred embodiments. These embodiments are only typical examples of application of the technical scheme of the utility model, and any technical scheme formed by equivalent replacement or equivalent transformation falls within the scope of the utility model.

[0034] In the description of the scheme, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as the reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0035] As shown in Figures 2 to 7 The utility model discloses a CT machine cylinder flange ring shaping frock, including shaping assembly 1, shaping assembly 1 includes drive piece 11, movable mould 12 and fixed mould 13. Wherein, drive piece 11 can be cylinder or oil cylinder or linear motor and so on the structure of prior art that has disclosed with linear drive function, here is not repeated in detail.

[0036] Further, drive piece 11 and fixed mould 13 are arranged on mounting seat 10. The parting surface 123 of movable mould 12 and fixed mould 13 is a circular arc surface matched with the contour of the flange ring, the inner side of the flange ring is in contact with the parting surface 123 on the fixed mould 13, the output end of the drive piece 11 is connected with the movable mould 12 and drives the movable mould 12 to move towards the fixed mould 13 until the parting surface 123 is closed, and the contour shaping of the flange ring in the parting surface 123 is completed.

[0037] Further, the parting surface 123 on the movable mould 12 and the fixed mould 13 is formed with a concave-convex structure matched with each other. The concave-convex structure is used to ensure that the acting force is uniformly distributed on the circular arc segment within the covering range of the movable mould and the fixed mould, so that the contour degree after shaping is significantly improved, and high-precision shaping effect of the flange ring or the circular arc segment is realized.

[0038] The distance between the profiling surface 123 and the center point of the profiling bracket 2 is preferably designed as 85% of the flange ring radius, and the remaining 15% can be used as the springback amount after profiling. Such a design allows the application of a quantitative force to each circular arc segment or circular arc surface of the flange ring within the elastic springback range of the material after the mold and the die are matched during processing, so as to ensure that the flange ring still has a required profile after the material springs back.

[0039] The utility model still includes as Figures 2 to 7 The utility model discloses a profiling bracket 2 as shown in the drawing, which is provided with a support 21 for supporting a flange ring workpiece, and the vertex of the support 21 is not lower than the upper surface of the mounting seat 10. The support 21 is at least three, and preferably four supports 21 are provided in the utility model, and the four supports 21 are centrally symmetrically arranged.

[0040] As Figures 2 to 3 The support 21 is a roller in the first embodiment of the utility model, and the setting direction of the roller is along the diameter direction of the flange ring. All contact points between the flange ring and the support 21 are located inside or outside the highest point of the roller, which can ensure the stability of the flange ring placed on the support 21.

[0041] As Figures 4 to 5 The second embodiment of the utility model is different from the first embodiment in that the setting direction of the support 21 is different. The support 21 includes a roller and a limiting block 211 in the embodiment, wherein the roller is arranged along the circumferential direction of the flange ring. Such a setting manner can facilitate the rotation of the flange ring after profiling. The limiting block 211 is located between two adjacent rollers, at least two, and is symmetrically arranged on the outer periphery of the flange ring. The outer wall of the flange ring is limited by the limiting block 211 to ensure the stability of the placement position of the flange ring.

[0042] As Figures 6 to 7 The third embodiment of the utility model is different from the above-mentioned embodiments in that the design form of the support 21. Specifically, the support 21 is a universal ball in the embodiment, and all contact points between the flange ring and the support 21 are located inside or outside the highest point of the universal ball. The use of the universal ball as the support 21 can ensure the stability of the placement position of the flange ring and facilitate the rotation of the flange ring after local profiling, and can also ensure the concentricity of the flange ring and the profiling bracket 2 during rotation.

[0043] In combination with Figures 8 to 13 The working process of the utility model will be briefly described as follows.

[0044] S1, the flange ring is placed on the support 21, and the local inner wall of the flange ring is in contact with the fixed mold 13. For details, please refer to the accompanying drawings. Figures 8 to 9

[0045] S2, the driving part 11 is started to drive the moving mold 12 to move towards the fixed mold 13 until the parting surface 123 is closed. For details, please refer to the accompanying drawings. Figures 10 to 11

[0046] S3, the driving part 11 drives the moving mold 12 to reset to open the parting surface 123. At the same time, the flange ring is rotated. For details, please refer to the accompanying drawings. Figures 12 to 13

[0047] The utility model still has a variety of implementation manners, all technical schemes formed by using equivalent transformation or equivalent transformation fall within the protection scope of the utility model.​​​

Claims

1. A CT machine cylinder flange ring shaping tool, characterized in that: The shaping assembly (1) and the shaping bracket (2) are included; the shaping assembly (1) includes a driving part (11), a movable die (12) and a fixed die (13), the driving part (11) and the fixed die (13) are arranged on a mounting seat (10); the parting surface (123) of the movable die (12) and the fixed die (13) is a circular arc surface matched with the flange ring contour; the supporting part (21) for supporting the flange ring workpiece is arranged on the shaping bracket (2), and the vertex of the supporting part (21) is not lower than the upper surface of the mounting seat (10); the inner side of the flange ring is in contact with the parting surface (123) on the fixed die (13), the output end of the driving part (11) is connected with the movable die (12), and the movable die (12) is driven to move towards the fixed die (13), until the parting surface (123) is closed, and the contour shaping of the flange ring in the parting surface (123) is completed.

2. The CT barrel flange ring sizing tool of claim 1, wherein: The parting surface (123) on the movable die (12) and the fixed die (13) is formed with a concave-convex structure matched with each other.

3. The CT barrel flange ring sizing tool of claim 2, wherein: The distance between the parting surface (123) and the center point of the shaping bracket (2) is 85% of the flange ring radius.

4. The CT barrel flange ring sizing tool of claim 1, wherein: The mounting seat (10) is further provided with a guide rail (14), the guide rail (14) is arranged on both sides of the movable die (12) and the fixed die (13) in parallel, so as to limit the moving direction of the movable die (12).

5. The CT barrel flange ring sizing tool of claim 1, wherein: The supporting part (21) is at least three; the supporting part (21) is a roller, the setting direction of the roller is arranged along the diameter direction of the flange ring, and all the contact points between the flange ring and the supporting part (21) are located inside or outside the highest point of the roller.

6. The CT barrel flange ring sizing tool of Claim 1, wherein: The supporting part (21) includes a roller and a limiting block (211); the roller is arranged along the circumferential direction of the flange ring; the limiting block (211) is located between adjacent two rollers, at least two, and is symmetrically arranged on the outer periphery of the flange ring and in contact with the outer contour of the flange ring.

7. The CT barrel flange ring sizing tool of Claim 1, wherein: The supporting part (21) is a universal ball, and all the contact points between the flange ring and the supporting part (21) are located inside or outside the highest point of the universal ball.

8. The CT barrel flange ring sizing tool of claim 5, wherein: The supporting part (21) has four, and the four supporting parts (21) are arranged in central symmetry.

9. The CT barrel flange ring sizing tool of Claim 1, wherein: The driving part (11) is a gas cylinder or an oil cylinder or a linear motor.

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