Ray transillumination tool for precision casting part

Abstract

The utility model relates to the technical field of ray detection, and discloses a ray transillumination tool for precision casting parts, which comprises a box seat, a lead screw module is arranged in the box seat, the input end of the lead screw module extends out of the box seat and is fixedly provided with a hand wheel, and the top of the box seat is provided with a rectangular groove. A sliding table of the lead screw module penetrates through the rectangular groove and is fixedly provided with a bottom plate, the upper side of the bottom plate is rotationally provided with a right-angle storage plate through a first rotating base, a calibration mechanism used for adjusting the translation position of the right-angle storage plate is arranged between the box base and the bottom plate, and protractors are fixedly installed at the two ends of the upper side of the bottom plate correspondingly; a positioning mechanism used for adjusting the swing angle of the right-angle storage plate is arranged between the protractor and the right-angle storage plate, and a pair of lead plates is fixedly installed on the upper side of the right-angle storage plate. The device is flexible and adjustable in structure and simple and convenient to operate, effectively solves the problems of complicated operation, low efficiency and poor consistency in the traditional method, and meets the high-standard requirement of radiographic inspection of precision casting parts.

Description

Technical Field

[0001] This utility model relates to the field of X-ray inspection technology, specifically to X-ray irradiation fixtures for precision casting components. Background Technology

[0002] Precision cast parts have stringent performance requirements due to factors such as working environment, temperature, and operating conditions.

[0003] Metallurgical defects in precision-cast parts can pose serious safety hazards. Therefore, during production, radiographic testing is required to inspect the internal structural quality of the parts. Radiographic testing typically uses 100% radiographic testing, involves a large number of tests, and requires high consistency of film images. Therefore, the placement and angle of the workpieces are critical.

[0004] For example, in the transmission inspection of precision-cast aircraft blades, the blade rim plate usually forms a complex "T" or "L" shaped structure with the blade body and tenon. There is no universal tooling for placement, and only a foam seat is used as a support to ensure the position and angle of the workpiece relative to the X-ray machine. Blade rim plate defects (such as inclusions and looseness) mostly occur at the corners where they connect with the blade body or in the cavities inside the rim plate. Conventional vertical X-rays will cause the rim plate and the blade body image to overlap, and the rim plate often has weight-reducing grooves or air film holes, which are extremely sensitive to the X-ray angle.

[0005] The operation is cumbersome, the workload is large, the radiographic efficiency is low, and it is easy to cause obstruction. The position and angle of the workpiece cannot be guaranteed to be consistent during each batch of testing operations, resulting in inconsistent images formed by radiography, and the film cannot meet the evaluation requirements.

[0006] Therefore, in order to solve the above problems, a radiographic fixture for precision casting parts is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a radiographic fixture for precision casting parts, which can flexibly adjust the angle at which the precision casting parts are radiographed and has good consistency in repeated placement, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A radiographic fixture for precision casting components includes a housing, inside which a lead screw module is installed. The input end of the lead screw module extends out of the housing and is fixedly mounted with a handwheel. A rectangular slot is formed on the top of the housing, through which a slide of the lead screw module passes and is fixedly mounted with a base plate. A right-angle plate is rotatably mounted on the upper side of the base plate via a first rotating seat. The axis of the first rotating seat is perpendicular to the translation direction of the slide of the lead screw module. A calibration mechanism for adjusting the translation position of the right-angle plate is provided between the housing and the base plate. Protractors are fixedly mounted at both ends of the upper side of the base plate. A positioning mechanism for adjusting the swing angle of the right-angle plate is provided between the protractors and the right-angle plate. A pair of lead plates are fixedly mounted on the upper side of the right-angle plate.

[0010] Specifically, the positioning mechanism includes a disc-shaped knob, a rectangular slider, and a threaded section. The protractor is provided with an arc-shaped through groove. A drive shaft is rotatably mounted on one side of the right-angled shelf via a second rotating seat. The end of the drive shaft passes through the arc-shaped through groove and is fixedly mounted with a disc-shaped knob. The drive shaft is provided with two threaded sections with opposite directions of rotation. The rectangular slider is provided with a screw hole that matches the threaded section. The threaded section on the same side is screwed into the screw hole, and one side of the rectangular slider abuts against the right-angled shelf.

[0011] Furthermore, the disc-shaped knob and the rectangular slider are provided with anti-slip textured surfaces on their end faces near the protractor.

[0012] Specifically, the calibration mechanism includes a pointer and a scale. The pointer is fixedly installed at one end of the base plate. The center line of the pointer and the axis of the first rotating seat are located in the same vertical plane. A scale is provided at one end of the upper surface of the housing, and the pointer points to the scale.

[0013] Specifically, an auxiliary support is provided between the base plate and the right-angle shelf, and the auxiliary support is located on the side of the right-angle shelf away from the positioning mechanism.

[0014] Furthermore, the auxiliary support includes a locking rod and a rotating joint. The upper end of the locking rod is rotatably assembled with the right-angle shelf through the rotating joint, and the lower end of the locking rod is rotatably assembled with the base plate through the rotating joint.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This fixture can hold multiple precision-cast components via a lead plate on a right-angled shelf. The lead screw module and calibration mechanism work together to achieve precise translation and positioning. The protractor and positioning mechanism work together to adjust and position the angle, ensuring consistency of position and angle for each radiograph, improving film quality and the reliability of evaluation. It can also be fine-tuned according to the angle inspection requirements of details to avoid image overlap. In addition, the auxiliary support can enhance the support stability under heavy component inspection conditions.

[0017] The overall structure is flexible and adjustable, and the operation is simple, effectively solving the problems of cumbersome operation, low efficiency and poor consistency in traditional methods, and meeting the high standard requirements of radiographic testing of precision casting parts. Attached Figure Description

[0018] Figure 1 This is a schematic front view of the structure of this utility model;

[0019] Figure 2 This is a top view illustrating the structure of this utility model;

[0020] Figure 3 for Figure 1 A partial cross-sectional view of the structure at the positioning mechanism of the AA (alignment).

[0021] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at the auxiliary support component.

[0022] In the diagram: 1. Box base, 2. Lead screw module, 3. Auxiliary support component, 31. Locking rod, 32. Rotary joint, 4. Base plate, 5. Calibration mechanism, 51. Pointer, 52. Scale strip, 6. Protractor, 7. Positioning mechanism, 71. Disc-shaped knob, 72. Rectangular slider, 73. Threaded section, 8. Lead plate, 9. Right-angle shelf. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] Please see Figure 1 , Figure 2 This invention provides a radiographic fixture for precision casting parts, suitable for applications where the parts are relatively lightweight.

[0026] The device includes a housing 1, inside which a lead screw module 2 is installed. The lead screw module 2 is horizontally positioned, and its input end extends out of the housing 1 and is fixedly mounted with a handwheel. A rectangular slot is provided on the top of the housing 1, through which the slide of the lead screw module 2 passes and is fixedly mounted with a base plate 4. A right-angle shelf 9 is rotatably mounted on the upper side of the base plate 4 via a first rotating seat. The axis of the first rotating seat is perpendicular to the translation direction of the slide of the lead screw module 2.

[0027] The housing 1 is a rectangular box used to house the lead screw module 2. The lead screw module 2 is an existing component consisting of a slide, lead screw, lead screw nut, guide rail, housing and screw knob. One end of the lead screw extends out of the housing to form the input end. The lead screw can be rotated by manually turning the handwheel. The rotational motion is converted into the linear reciprocating movement of the slide through the lead screw nut. Locking is achieved by the screw knob pressing against the end of the lead screw. Finally, the right-angle shelf 9 can be moved horizontally and positioned by the transmission of the base plate 4 and the first rotating seat.

[0028] A calibration mechanism 5 is provided between the base 1 and the bottom plate 4 for adjusting the translational position of the right-angle shelf 9. The calibration mechanism 5 is used to confirm the movement position of the bottom plate 4 relative to the base 1, thereby facilitating and quickly completing the repeated positioning of the right-angle shelf 9.

[0029] Both ends of the upper side of the base plate 4 are fixedly installed with protractors 6. A positioning mechanism 7 for adjusting the swing angle of the right-angle shelf 9 is provided between the protractors 6 and the right-angle shelf 9. When the positioning mechanism 7 is in the released state, the right-angle shelf 9 can swing on the first rotating seat, and the swing angle is measured by the protractors 6. After the swing position is determined, the positioning mechanism 7 locks the position of the right-angle shelf 9 between the protractors 6.

[0030] A pair of lead plates 8 are fixedly installed on the upper side of the right-angle shelf 9 by adhesive. The pair of lead plates 8 are set perpendicular to each other and can hold multiple parts to be inspected by radiography at the same time. The lead material has high density characteristics, which can effectively absorb radiation, reduce scattering interference, and ensure clear and consistent radiographic images.

[0031] For components with complex shapes that are not conducive to stable placement, the components can be inserted into the foam base and then placed on a pair of lead plates 8.

[0032] Please see Figure 3 The specific structure of positioning mechanism 7:

[0033] The positioning mechanism 7 includes a disc-shaped knob 71, a rectangular slider 72, and a threaded section 73. The protractor 6 is provided with an arc-shaped through groove. A drive shaft is rotatably mounted on one side of the right-angled shelf 9 via a second rotating seat. The end of the drive shaft passes through the arc-shaped through groove and is fixedly mounted with the disc-shaped knob 71. The drive shaft is provided with two threaded sections 73 with opposite directions of rotation. The rectangular slider 72 is provided with a screw hole that matches the threaded section 73. The threaded section 73 on the same side is screwed into the screw hole, and one side of the rectangular slider 72 abuts against the right-angled shelf 9.

[0034] Manually rotating the disc-shaped knob 71 at one end will rotate the drive shaft on the second rotating seat, causing the two threaded sections 73 with opposite rotation directions to rotate simultaneously. Because the two threaded sections 73 have opposite rotation directions, the two rectangular sliders 72 can move in opposite directions (closer or farther apart). After the two rectangular sliders 72 move closer to each other, the ends of the rectangular sliders 72 separate from the protractor 6. At this time, the drive shaft can move along the arc-shaped through groove, thereby driving the right-angle plate 9 to swing. After the two rectangular sliders 72 move farther apart, the ends of the rectangular sliders 72 abut against the protractor 6. After cooperating with the disc-shaped knob 71 on the same side, the protractor 6 can be clamped, thereby completing the locking.

[0035] The disc-shaped knob 71 and the rectangular slider 72 are provided with anti-slip texture on their end faces near the protractor 6 by means of engraving. The anti-slip texture is used to increase the friction between the disc-shaped knob 71, the rectangular slider 72 and the protractor 6 after clamping, and improve the firmness of locking.

[0036] Please see Figure 2 The specific structure of calibration mechanism 5:

[0037] The calibration mechanism 5 includes a pointer 51 and a scale 52. The pointer 51 is fixedly installed at one end of the base plate 4. The center line of the pointer 51 and the axis of the first rotating seat are located in the same vertical plane. The scale 52 is set at one end of the upper surface of the housing 1 by engraving. The pointer 51 points to the scale 52.

[0038] As the base plate 4 moves, pointer 51 can align with different positions on the scale 52. After each adjustment, the right-angle shelf 9 can be easily and quickly reset to the same position, improving operational efficiency.

[0039] Example 2:

[0040] Please see Figure 4 Another radiographic fixture for precision casting parts is provided, suitable for applications involving heavy parts. Compared to Embodiment 1, the following additional technical features are provided:

[0041] An auxiliary support 3 is provided between the base plate 4 and the right-angle shelf 9. The auxiliary support 3 is located on the side of the right-angle shelf 9 away from the positioning mechanism 7. The auxiliary support 3 is locked again after the positioning mechanism 7 is locked, which can enhance the positioning support capacity of the right-angle shelf 9 to bear heavier parts to be tested.

[0042] The specific structure of auxiliary support 3:

[0043] The auxiliary support component 3 includes a locking rod 31 and a rotating joint 32. The upper end of the locking rod 31 is rotatably assembled with the right-angle shelf 9 via the rotating joint 32, and the lower end of the locking rod 31 is rotatably assembled with the base plate 4 via the rotating joint 32.

[0044] The locking rod 31 is an existing component with a sleeve, an inner rod, and a locking buckle. The inner rod can slide and extend within the sleeve to accommodate the distance changes between the two rotating joints 32. The lower end of the sleeve has two clips formed by a pair of notches. The locking buckle is located on the sleeve. After the locking buckle is locked, the two clips can move closer to each other, thereby fixing the extension length of the inner rod relative to the sleeve and providing further auxiliary support for the right-angle shelf 9.

[0045] The operation will now be explained using the structure of Example 2 as an example:

[0046] Placement: Place multiple identical precision casting parts to be inspected directly on the lead plate 8 of the right-angle shelf 9, or place them on the lead plate 8 of the right-angle shelf 9 through the inserted foam base.

[0047] Translational positioning: Rotate the handwheel of the lead screw module 2 to drive the base plate 4 to translate through the slide table. Align the pointer 51 of the calibration mechanism 5 with the scale 52 on the upper surface of the housing 1 to achieve precise calibration of the translational position.

[0048] Angle adjustment: Loosen the disc-shaped knob 71 of the positioning mechanism 7 to separate the rectangular slider 72 from the protractor 6. Rotate the right-angle plate 9 to the target angle and read the angle value, such as 30° or 45°, through the arc-shaped through slot of the protractor 6. Tighten the disc-shaped knob 71 in the opposite direction. The rectangular slider 72 and the disc-shaped knob 71 clamp the protractor 6 to complete the angle locking.

[0049] Heavy-duty support: For heavy components, the length of the locking rod 31 of the auxiliary support 3 adapts to the swing of the right-angle shelf 9 and is fixed by a buckle, thereby enhancing the support capacity of the right-angle shelf 9.

[0050] Inspection: After confirming the position, angle and stability of the component, start the X-ray machine to inspect it, ensuring that the film images are consistent and unobstructed, meeting the standardized requirements for 100% X-ray inspection of precision casting components.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A radiographic fixture for precision casting parts, characterized in that: The system includes a base (1), inside which a lead screw module (2) is installed. The input end of the lead screw module (2) extends out of the base (1) and is fixedly mounted with a handwheel. A rectangular groove is provided on the top of the base (1). The slide of the lead screw module (2) passes through the rectangular groove and is fixedly mounted with a base plate (4). A right-angle shelf (9) is rotatably mounted on the upper side of the base plate (4) via a first rotating seat. The axis of the first rotating seat is perpendicular to the translation direction of the slide of the lead screw module (2). A calibration mechanism (5) for adjusting the translation position of the right-angle shelf (9) is provided between the base (1) and the base plate (4). Protractors (6) are fixedly mounted on both ends of the upper side of the base plate (4). A positioning mechanism (7) for adjusting the swing angle of the right-angle shelf (9) is provided between the protractor (6) and the right-angle shelf (9). A pair of lead plates (8) are fixedly mounted on the upper side of the right-angle shelf (9).

2. The radiographic fixture for precision casting parts according to claim 1, characterized in that: The positioning mechanism (7) includes a disc-shaped knob (71), a rectangular slider (72), and a threaded section (73). The protractor (6) is provided with an arc-shaped through groove. A drive shaft is rotatably mounted on one side of the right-angled shelf (9) via a second rotating seat. The end of the drive shaft passes through the arc-shaped through groove and is fixedly mounted with a disc-shaped knob (71). The drive shaft is provided with two threaded sections (73) with opposite directions of rotation. The rectangular slider (72) is provided with a screw hole that matches the threaded section (73). The threaded section (73) on the same side is screwed into the screw hole, and one side of the rectangular slider (72) abuts against the right-angled shelf (9).

3. The radiographic fixture for precision casting parts according to claim 2, characterized in that: The disc-shaped knob (71) and the rectangular slider (72) are provided with anti-slip mesh on the end face near the protractor (6).

4. The radiographic fixture for precision casting parts according to claim 1, characterized in that: The calibration mechanism (5) includes a pointer (51) and a scale (52). The pointer (51) is fixedly installed at one end of the base plate (4). The center line of the pointer (51) and the axis of the first rotating seat are located in the same vertical plane. The scale (52) is provided at one end of the upper surface of the box base (1). The pointer (51) points to the scale (52).

5. The radiographic fixture for precision casting parts according to claim 1, characterized in that: An auxiliary support (3) is provided between the base plate (4) and the right-angle shelf (9), and the auxiliary support (3) is located on the side of the right-angle shelf (9) away from the positioning mechanism (7).

6. The radiographic fixture for precision casting parts according to claim 5, characterized in that: The auxiliary support (3) includes a locking rod (31) and a rotating joint (32). The upper end of the locking rod (31) is rotatably assembled with the right-angle shelf (9) through the rotating joint (32), and the lower end of the locking rod (31) is rotatably assembled with the base plate (4) through the rotating joint (32).

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